/*
- * Copyright (c) 2015 Cisco and/or its affiliates.
+ * Copyright (c) 2016 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
#include <vnet/vnet.h>
#include <vnet/ip/ip.h>
-#include <vnet/ethernet/ethernet.h> /* for ethernet_header_t */
+#include <vnet/ethernet/ethernet.h> /* for ethernet_header_t */
#include <vnet/srp/srp.h> /* for srp_hw_interface_class */
#include <vppinfra/cache.h>
+#include <vnet/fib/fib_table.h>
+#include <vnet/fib/ip6_fib.h>
+#include <vnet/dpo/load_balance.h>
+#include <vnet/dpo/classify_dpo.h>
#include <vppinfra/bihash_template.c>
-static void compute_prefix_lengths_in_search_order (ip6_main_t * im)
-{
- int i;
- vec_reset_length (im->prefix_lengths_in_search_order);
- /* Note: bitmap reversed so this is in fact a longest prefix match */
- clib_bitmap_foreach (i, im->non_empty_dst_address_length_bitmap,
- ({
- int dst_address_length = 128 - i;
- vec_add1 (im->prefix_lengths_in_search_order, dst_address_length);
- }));
-}
-
-u32
-ip6_fib_lookup_with_table (ip6_main_t * im, u32 fib_index, ip6_address_t * dst)
-{
- ip_lookup_main_t * lm = &im->lookup_main;
- int i, len;
- int rv;
- BVT(clib_bihash_kv) kv, value;
- u64 fib;
-
- len = vec_len (im->prefix_lengths_in_search_order);
-
- kv.key[0] = dst->as_u64[0];
- kv.key[1] = dst->as_u64[1];
- fib = ((u64)((fib_index))<<32);
-
- for (i = 0; i < len; i++)
- {
- int dst_address_length = im->prefix_lengths_in_search_order[i];
- ip6_address_t * mask = &im->fib_masks[dst_address_length];
-
- ASSERT(dst_address_length >= 0 && dst_address_length <= 128);
- //As lengths are decreasing, masks are increasingly specific.
- kv.key[0] &= mask->as_u64[0];
- kv.key[1] &= mask->as_u64[1];
- kv.key[2] = fib | dst_address_length;
-
- rv = BV(clib_bihash_search_inline_2)(&im->ip6_lookup_table, &kv, &value);
- if (rv == 0)
- return value.value;
- }
-
- return lm->miss_adj_index;
-}
-
-u32 ip6_fib_lookup (ip6_main_t * im, u32 sw_if_index, ip6_address_t * dst)
-{
- u32 fib_index = vec_elt (im->fib_index_by_sw_if_index, sw_if_index);
- return ip6_fib_lookup_with_table (im, fib_index, dst);
-}
-
-void
-vnet_ip6_fib_init (ip6_main_t * im, u32 fib_index)
-{
- ip_lookup_main_t * lm = &im->lookup_main;
- ip6_add_del_route_args_t a;
- ip_adjacency_t * adj;
-
- memset(&a, 0x0, sizeof(ip6_add_del_route_args_t));
-
- a.table_index_or_table_id = fib_index;
- a.flags = (IP6_ROUTE_FLAG_ADD
- | IP6_ROUTE_FLAG_FIB_INDEX
- | IP6_ROUTE_FLAG_KEEP_OLD_ADJACENCY
- | IP6_ROUTE_FLAG_NO_REDISTRIBUTE);
-
- /* Add ff02::1:ff00:0/104 via local route for all tables.
- This is required for neighbor discovery to work. */
- adj = ip_add_adjacency (lm, /* template */ 0, /* block size */ 1,
- &a.adj_index);
- adj->lookup_next_index = IP_LOOKUP_NEXT_LOCAL;
- adj->if_address_index = ~0;
- adj->rewrite_header.data_bytes = 0;
-
- ip6_set_solicited_node_multicast_address (&a.dst_address, 0);
-
- a.dst_address_length = 104;
- ip6_add_del_route (im, &a);
-
- /* Add all-routers multicast address via local route for all tables */
- adj = ip_add_adjacency (lm, /* template */ 0, /* block size */ 1,
- &a.adj_index);
- adj->lookup_next_index = IP_LOOKUP_NEXT_LOCAL;
- adj->if_address_index = ~0;
- adj->rewrite_header.data_bytes = 0;
-
- ip6_set_reserved_multicast_address (&a.dst_address,
- IP6_MULTICAST_SCOPE_link_local,
- IP6_MULTICAST_GROUP_ID_all_routers);
-
- a.dst_address_length = 128;
- ip6_add_del_route (im, &a);
-
- /* Add all-nodes multicast address via local route for all tables */
- adj = ip_add_adjacency (lm, /* template */ 0, /* block size */ 1,
- &a.adj_index);
- adj->lookup_next_index = IP_LOOKUP_NEXT_LOCAL;
- adj->if_address_index = ~0;
- adj->rewrite_header.data_bytes = 0;
-
- ip6_set_reserved_multicast_address (&a.dst_address,
- IP6_MULTICAST_SCOPE_link_local,
- IP6_MULTICAST_GROUP_ID_all_hosts);
-
- a.dst_address_length = 128;
- ip6_add_del_route (im, &a);
-
- /* Add all-mldv2 multicast address via local route for all tables */
- adj = ip_add_adjacency (lm, /* template */ 0, /* block size */ 1,
- &a.adj_index);
- adj->lookup_next_index = IP_LOOKUP_NEXT_LOCAL;
- adj->if_address_index = ~0;
- adj->rewrite_header.data_bytes = 0;
-
- ip6_set_reserved_multicast_address (&a.dst_address,
- IP6_MULTICAST_SCOPE_link_local,
- IP6_MULTICAST_GROUP_ID_mldv2_routers);
-
- a.dst_address_length = 128;
- ip6_add_del_route (im, &a);
-}
-
-static ip6_fib_t *
-create_fib_with_table_id (ip6_main_t * im, u32 table_id)
-{
- ip6_fib_t * fib;
- hash_set (im->fib_index_by_table_id, table_id, vec_len (im->fibs));
- vec_add2 (im->fibs, fib, 1);
- fib->table_id = table_id;
- fib->index = fib - im->fibs;
- fib->flow_hash_config = IP_FLOW_HASH_DEFAULT;
- vnet_ip6_fib_init (im, fib->index);
- return fib;
-}
-
-ip6_fib_t *
-find_ip6_fib_by_table_index_or_id (ip6_main_t * im, u32 table_index_or_id, u32 flags)
-{
- uword * p, fib_index;
-
- fib_index = table_index_or_id;
- if (! (flags & IP6_ROUTE_FLAG_FIB_INDEX))
- {
- if (table_index_or_id == ~0) {
- table_index_or_id = 0;
- while (hash_get (im->fib_index_by_table_id, table_index_or_id)) {
- table_index_or_id++;
- }
- return create_fib_with_table_id (im, table_index_or_id);
- }
-
- p = hash_get (im->fib_index_by_table_id, table_index_or_id);
- if (! p)
- return create_fib_with_table_id (im, table_index_or_id);
- fib_index = p[0];
- }
- return vec_elt_at_index (im->fibs, fib_index);
-}
-
-void ip6_add_del_route (ip6_main_t * im, ip6_add_del_route_args_t * a)
-{
- ip_lookup_main_t * lm = &im->lookup_main;
- ip6_fib_t * fib;
- ip6_address_t dst_address;
- u32 dst_address_length, adj_index;
- uword is_del;
- u32 old_adj_index = ~0;
- BVT(clib_bihash_kv) kv, value;
-
- vlib_smp_unsafe_warning();
-
- is_del = (a->flags & IP6_ROUTE_FLAG_DEL) != 0;
-
- /* Either create new adjacency or use given one depending on arguments. */
- if (a->n_add_adj > 0)
- {
- ip_add_adjacency (lm, a->add_adj, a->n_add_adj, &adj_index);
- ip_call_add_del_adjacency_callbacks (lm, adj_index, /* is_del */ 0);
- }
- else
- adj_index = a->adj_index;
-
- dst_address = a->dst_address;
- dst_address_length = a->dst_address_length;
- fib = find_ip6_fib_by_table_index_or_id (im, a->table_index_or_table_id,
- a->flags);
-
- ASSERT (dst_address_length < ARRAY_LEN (im->fib_masks));
- ip6_address_mask (&dst_address, &im->fib_masks[dst_address_length]);
-
- /* refcount accounting */
- if (is_del)
- {
- ASSERT (im->dst_address_length_refcounts[dst_address_length] > 0);
- if (--im->dst_address_length_refcounts[dst_address_length] == 0)
- {
- im->non_empty_dst_address_length_bitmap =
- clib_bitmap_set (im->non_empty_dst_address_length_bitmap,
- 128 - dst_address_length, 0);
- compute_prefix_lengths_in_search_order (im);
- }
- }
- else
- {
- im->dst_address_length_refcounts[dst_address_length]++;
-
- im->non_empty_dst_address_length_bitmap =
- clib_bitmap_set (im->non_empty_dst_address_length_bitmap,
- 128 - dst_address_length, 1);
- compute_prefix_lengths_in_search_order (im);
- }
-
- kv.key[0] = dst_address.as_u64[0];
- kv.key[1] = dst_address.as_u64[1];
- kv.key[2] = ((u64)((fib - im->fibs))<<32) | dst_address_length;
-
- if (BV(clib_bihash_search)(&im->ip6_lookup_table, &kv, &value) == 0)
- old_adj_index = value.value;
-
- if (is_del)
- BV(clib_bihash_add_del) (&im->ip6_lookup_table, &kv, 0 /* is_add */);
- else
- {
- /* Make sure adj index is valid. */
- if (CLIB_DEBUG > 0)
- (void) ip_get_adjacency (lm, adj_index);
-
- kv.value = adj_index;
-
- BV(clib_bihash_add_del) (&im->ip6_lookup_table, &kv, 1 /* is_add */);
- }
-
- /* Avoid spurious reference count increments */
- if (old_adj_index == adj_index
- && adj_index != ~0
- && !(a->flags & IP6_ROUTE_FLAG_KEEP_OLD_ADJACENCY))
- {
- ip_adjacency_t * adj = ip_get_adjacency (lm, adj_index);
- if (adj->share_count > 0)
- adj->share_count --;
- }
-
- /* Delete old adjacency index if present and changed. */
- {
- if (! (a->flags & IP6_ROUTE_FLAG_KEEP_OLD_ADJACENCY)
- && old_adj_index != ~0
- && old_adj_index != adj_index)
- ip_del_adjacency (lm, old_adj_index);
- }
-}
-
-u32
-ip6_route_get_next_hop_adj (ip6_main_t * im,
- u32 fib_index,
- ip6_address_t *next_hop,
- u32 next_hop_sw_if_index,
- u32 explicit_fib_index)
-{
- ip_lookup_main_t * lm = &im->lookup_main;
- vnet_main_t * vnm = vnet_get_main();
- int is_interface_next_hop;
- uword * nh_result;
- u32 nh_adj_index;
- ip6_fib_t * fib;
-
- fib = vec_elt_at_index (im->fibs, fib_index);
-
- is_interface_next_hop = ip6_address_is_zero (next_hop);
-
- if (is_interface_next_hop)
- {
- nh_result = hash_get (im->interface_route_adj_index_by_sw_if_index,
- next_hop_sw_if_index);
- if (nh_result)
- nh_adj_index = *nh_result;
- else
- {
- ip_adjacency_t * adj;
- adj = ip_add_adjacency (lm, /* template */ 0, /* block size */ 1,
- &nh_adj_index);
- ip6_adjacency_set_interface_route (vnm, adj,
- next_hop_sw_if_index, ~0);
- ip_call_add_del_adjacency_callbacks
- (lm, next_hop_sw_if_index, /* is_del */ 0);
- hash_set (im->interface_route_adj_index_by_sw_if_index,
- next_hop_sw_if_index, nh_adj_index);
- }
- }
- else if (next_hop_sw_if_index == ~0)
- {
- /* next-hop is recursive. we always need a indirect adj
- * for recursive paths. Any LPM we perform now will give
- * us a valid adj, but without tracking the next-hop we
- * have no way to keep it valid.
- */
- ip_adjacency_t add_adj;
- memset (&add_adj, 0, sizeof(add_adj));
- add_adj.n_adj = 1;
- add_adj.lookup_next_index = IP_LOOKUP_NEXT_INDIRECT;
- add_adj.indirect.next_hop.ip6.as_u64[0] = next_hop->as_u64[0];
- add_adj.indirect.next_hop.ip6.as_u64[1] = next_hop->as_u64[1];
- add_adj.explicit_fib_index = explicit_fib_index;
- ip_add_adjacency (lm, &add_adj, 1, &nh_adj_index);
- }
- else
- {
- BVT(clib_bihash_kv) kv, value;
-
- /* Look for the interface /128 route */
- kv.key[0] = next_hop->as_u64[0];
- kv.key[1] = next_hop->as_u64[1];
- kv.key[2] = ((u64)((fib - im->fibs))<<32) | 128;
-after_nd:
- if (BV(clib_bihash_search)(&im->ip6_lookup_table, &kv, &value) < 0)
- {
- ip_adjacency_t * adj;
- nh_adj_index = ip6_fib_lookup_with_table (im, fib_index, next_hop);
- adj = ip_get_adjacency (lm, nh_adj_index);
- /* if ND interface adjacencty is present, we need to
- install ND adjaceny for specific next hop */
- if (adj->lookup_next_index == IP_LOOKUP_NEXT_ARP &&
- adj->arp.next_hop.ip6.as_u64[0] == 0 &&
- adj->arp.next_hop.ip6.as_u64[1] == 0)
- {
- nh_adj_index = vnet_ip6_neighbor_glean_add(fib_index, next_hop);
- }
- else if (next_hop->as_u8[0] == 0xfe)
- {
- //Next hop is link-local. No indirect in this case.
- //Let's add it as a possible neighbor on this interface
- ip6_address_t null_addr= {};
- ip6_add_del_route_next_hop (im, IP6_ROUTE_FLAG_ADD,
- next_hop, 128,
- &null_addr, next_hop_sw_if_index,
- 1, ~0, fib_index);
- goto after_nd;
- }
- }
- else
- {
- nh_adj_index = value.value;
- }
- }
-
- return (nh_adj_index);
-}
-
-void
-ip6_add_del_route_next_hop (ip6_main_t * im,
- u32 flags,
- ip6_address_t * dst_address,
- u32 dst_address_length,
- ip6_address_t * next_hop,
- u32 next_hop_sw_if_index,
- u32 next_hop_weight, u32 adj_index,
- u32 explicit_fib_index)
-{
- vnet_main_t * vnm = vnet_get_main();
- ip_lookup_main_t * lm = &im->lookup_main;
- u32 fib_index;
- ip6_fib_t * fib;
- ip6_address_t masked_dst_address;
- u32 old_mp_adj_index, new_mp_adj_index;
- u32 dst_adj_index, nh_adj_index;
- int rv;
- ip_adjacency_t * dst_adj;
- ip_multipath_adjacency_t * old_mp, * new_mp;
- int is_del = (flags & IP6_ROUTE_FLAG_DEL) != 0;
- clib_error_t * error = 0;
- BVT(clib_bihash_kv) kv, value;
-
- vlib_smp_unsafe_warning();
-
- if (explicit_fib_index == (u32)~0)
- fib_index = vec_elt (im->fib_index_by_sw_if_index, next_hop_sw_if_index);
- else
- fib_index = explicit_fib_index;
-
- fib = vec_elt_at_index (im->fibs, fib_index);
-
- /* Lookup next hop to be added or deleted. */
- if (adj_index == (u32)~0)
- {
- nh_adj_index = ip6_route_get_next_hop_adj(im, fib_index,
- next_hop,
- next_hop_sw_if_index,
- explicit_fib_index);
- }
- else
- {
- /* Look for the interface /128 route */
- kv.key[0] = next_hop->as_u64[0];
- kv.key[1] = next_hop->as_u64[1];
- kv.key[2] = ((u64)((fib - im->fibs))<<32) | 128;
-
- if (BV(clib_bihash_search)(&im->ip6_lookup_table, &kv, &value) < 0)
- {
- vnm->api_errno = VNET_API_ERROR_UNKNOWN_DESTINATION;
- error = clib_error_return (0, "next-hop %U/128 not in FIB",
- format_ip6_address, next_hop);
- goto done;
- }
-
- nh_adj_index = value.value;
- }
-
- ASSERT (dst_address_length < ARRAY_LEN (im->fib_masks));
- masked_dst_address = dst_address[0];
- ip6_address_mask (&masked_dst_address, &im->fib_masks[dst_address_length]);
-
- kv.key[0] = masked_dst_address.as_u64[0];
- kv.key[1] = masked_dst_address.as_u64[1];
- kv.key[2] = ((u64)((fib - im->fibs))<<32) | dst_address_length;
-
- rv = BV(clib_bihash_search)(&im->ip6_lookup_table, &kv, &value);
-
- if (rv == 0)
- {
- dst_adj_index = value.value;
- dst_adj = ip_get_adjacency (lm, dst_adj_index);
- }
- else
- {
- /* For deletes destination must be known. */
- if (is_del)
- {
- vnm->api_errno = VNET_API_ERROR_UNKNOWN_DESTINATION;
- error = clib_error_return (0, "unknown destination %U/%d",
- format_ip6_address, dst_address,
- dst_address_length);
- goto done;
- }
-
- dst_adj_index = ~0;
- dst_adj = 0;
- }
-
- /* Ignore adds of X/128 with next hop of X. */
- if (! is_del
- && dst_address_length == 128
- && ip6_address_is_equal (dst_address, next_hop))
- {
- vnm->api_errno = VNET_API_ERROR_PREFIX_MATCHES_NEXT_HOP;
- error = clib_error_return (0, "prefix matches next hop %U/%d",
- format_ip6_address, dst_address,
- dst_address_length);
- goto done;
- }
-
- /* Destination is not known and default weight is set so add route
- to existing non-multipath adjacency */
- if (dst_adj_index == ~0 && next_hop_weight == 1 && next_hop_sw_if_index == ~0)
- {
- /* create / delete additional mapping of existing adjacency */
- ip6_add_del_route_args_t a;
- ip_adjacency_t * nh_adj = ip_get_adjacency (lm, nh_adj_index);
-
- a.table_index_or_table_id = fib_index;
- a.flags = ((is_del ? IP6_ROUTE_FLAG_DEL : IP6_ROUTE_FLAG_ADD)
- | IP6_ROUTE_FLAG_FIB_INDEX
- | IP6_ROUTE_FLAG_KEEP_OLD_ADJACENCY
- | (flags & (IP6_ROUTE_FLAG_NO_REDISTRIBUTE
- | IP6_ROUTE_FLAG_NOT_LAST_IN_GROUP)));
- a.dst_address = dst_address[0];
- a.dst_address_length = dst_address_length;
- a.adj_index = nh_adj_index;
- a.add_adj = 0;
- a.n_add_adj = 0;
-
- ip6_add_del_route (im, &a);
-
- /* adjust share count. This cannot be the only use of the adjacency
- unless next hop is an indiect adj where share count is already
- incremented */
- if (next_hop_sw_if_index != ~0)
- nh_adj->share_count += is_del ? -1 : 1;
-
- goto done;
- }
-
- old_mp_adj_index = dst_adj ? dst_adj->heap_handle : ~0;
-
- if (! ip_multipath_adjacency_add_del_next_hop
- (lm, is_del,
- dst_adj ? dst_adj->heap_handle : ~0,
- nh_adj_index,
- next_hop_weight,
- &new_mp_adj_index))
- {
- vnm->api_errno = VNET_API_ERROR_NEXT_HOP_NOT_FOUND_MP;
- error = clib_error_return
- (0, "requested deleting next-hop %U not found in multi-path",
- format_ip6_address, next_hop);
- goto done;
- }
-
- old_mp = new_mp = 0;
- if (old_mp_adj_index != ~0)
- old_mp = vec_elt_at_index (lm->multipath_adjacencies, old_mp_adj_index);
- if (new_mp_adj_index != ~0)
- new_mp = vec_elt_at_index (lm->multipath_adjacencies, new_mp_adj_index);
-
- if (old_mp != new_mp)
- {
- ip6_add_del_route_args_t a;
- ip_adjacency_t * adj;
-
- a.table_index_or_table_id = fib_index;
- a.flags = ((is_del ? IP6_ROUTE_FLAG_DEL : IP6_ROUTE_FLAG_ADD)
- | IP6_ROUTE_FLAG_FIB_INDEX
- | IP6_ROUTE_FLAG_KEEP_OLD_ADJACENCY
- | (flags & IP6_ROUTE_FLAG_NO_REDISTRIBUTE));
- a.dst_address = dst_address[0];
- a.dst_address_length = dst_address_length;
- a.adj_index = new_mp ? new_mp->adj_index : dst_adj_index;
- a.add_adj = 0;
- a.n_add_adj = 0;
-
- ip6_add_del_route (im, &a);
-
- adj = ip_get_adjacency (lm, new_mp ? new_mp->adj_index : dst_adj_index);
- if (adj->n_adj == 1)
- adj->share_count += is_del ? -1 : 1;
- }
-
- done:
- if (error)
- clib_error_report (error);
-}
-
-u32
-ip6_get_route (ip6_main_t * im,
- u32 table_index_or_table_id,
- u32 flags,
- ip6_address_t * address,
- u32 address_length)
-{
- ip6_fib_t * fib = find_ip6_fib_by_table_index_or_id (im, table_index_or_table_id, flags);
- ip6_address_t masked_address;
- BVT(clib_bihash_kv) kv, value;
-
- ASSERT (address_length < ARRAY_LEN (im->fib_masks));
- clib_memcpy (&masked_address, address, sizeof (masked_address));
- ip6_address_mask (&masked_address, &im->fib_masks[address_length]);
-
- kv.key[0] = masked_address.as_u64[0];
- kv.key[1] = masked_address.as_u64[1];
- kv.key[2] = ((u64)((fib - im->fibs))<<32) | address_length;
-
- if (BV(clib_bihash_search)(&im->ip6_lookup_table, &kv, &value) == 0)
- return (value.value);
- return 0;
-}
-
-void
-ip6_foreach_matching_route (ip6_main_t * im,
- u32 table_index_or_table_id,
- u32 flags,
- ip6_address_t * dst_address,
- u32 address_length,
- ip6_address_t ** results,
- u8 ** result_lengths)
-{
- ip6_fib_t * fib =
- find_ip6_fib_by_table_index_or_id (im, table_index_or_table_id, flags);
- BVT(clib_bihash) * h = &im->ip6_lookup_table;
- BVT(clib_bihash_value) * v;
- clib_bihash_bucket_t * b;
- int i, j, k;
-
- if (*results)
- _vec_len (*results) = 0;
- if (*result_lengths)
- _vec_len (*result_lengths) = 0;
-
- /* Walk the table looking for routes which match the supplied address */
- for (i = 0; i < h->nbuckets; i++)
- {
- b = &h->buckets [i];
- if (b->offset == 0)
- continue;
-
- v = BV(clib_bihash_get_value) (h, b->offset);
- for (j = 0; j < (1<<b->log2_pages); j++)
- {
- for (k = 0; k < BIHASH_KVP_PER_PAGE; k++)
- {
- if (BV(clib_bihash_is_free)(&v->kvp[k]))
- continue;
-
- if ((v->kvp[k].key[2]
- == (((u64)((fib - im->fibs))<<32) | address_length))
- && ip6_destination_matches_route
- (im, dst_address, (ip6_address_t *) &v->kvp[k],
- address_length))
- {
- ip6_address_t * a;
-
- a = (ip6_address_t *)(&v->kvp[k]);
-
- vec_add1 (*results, a[0]);
- vec_add1 (*result_lengths, address_length);
- }
- }
- v++;
- }
- }
-}
-
-void ip6_maybe_remap_adjacencies (ip6_main_t * im,
- u32 table_index_or_table_id,
- u32 flags)
-{
-#if SOONE
- ip6_fib_t * fib
- = find_ip6_fib_by_table_index_or_id (im, table_index_or_table_id, flags);
-#endif
- ip_lookup_main_t * lm = &im->lookup_main;
-
- if (lm->n_adjacency_remaps == 0)
- return;
-
- clib_warning ("unimplemented, please report to vpp-dev@cisco.com");
-
- /* All remaps have been performed. */
- lm->n_adjacency_remaps = 0;
-}
-
-void ip6_delete_matching_routes (ip6_main_t * im,
- u32 table_index_or_table_id,
- u32 flags,
- ip6_address_t * address,
- u32 address_length)
-{
- /* $$$$ static may be OK - this should happen only on thread 0 */
- static ip6_address_t * matching_addresses;
- static u8 * matching_address_lengths;
- u32 l, i;
- ip6_add_del_route_args_t a;
-
- vlib_smp_unsafe_warning();
-
- a.flags = IP6_ROUTE_FLAG_DEL | IP6_ROUTE_FLAG_NO_REDISTRIBUTE | flags;
- a.table_index_or_table_id = table_index_or_table_id;
- a.adj_index = ~0;
- a.add_adj = 0;
- a.n_add_adj = 0;
-
- for (l = address_length + 1; l <= 128; l++)
- {
- ip6_foreach_matching_route (im, table_index_or_table_id, flags,
- address,
- l,
- &matching_addresses,
- &matching_address_lengths);
- for (i = 0; i < vec_len (matching_addresses); i++)
- {
- a.dst_address = matching_addresses[i];
- a.dst_address_length = matching_address_lengths[i];
- ip6_add_del_route (im, &a);
- }
- }
-
- ip6_maybe_remap_adjacencies (im, table_index_or_table_id, flags);
-}
+/**
+ * @file
+ * @brief IPv6 Forwarding.
+ *
+ * This file contains the source code for IPv6 forwarding.
+ */
void
ip6_forward_next_trace (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame,
- vlib_rx_or_tx_t which_adj_index);
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame,
+ vlib_rx_or_tx_t which_adj_index);
always_inline uword
ip6_lookup_inline (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame,
- int is_indirect)
-{
- ip6_main_t * im = &ip6_main;
- ip_lookup_main_t * lm = &im->lookup_main;
- vlib_combined_counter_main_t * cm = &im->lookup_main.adjacency_counters;
- u32 n_left_from, n_left_to_next, * from, * to_next;
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ ip6_main_t *im = &ip6_main;
+ vlib_combined_counter_main_t *cm = &load_balance_main.lbm_to_counters;
+ u32 n_left_from, n_left_to_next, *from, *to_next;
ip_lookup_next_t next;
- u32 cpu_index = os_get_cpu_number();
+ u32 cpu_index = os_get_cpu_number ();
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
while (n_left_from > 0)
{
- vlib_get_next_frame (vm, node, next,
- to_next, n_left_to_next);
+ vlib_get_next_frame (vm, node, next, to_next, n_left_to_next);
while (n_left_from >= 4 && n_left_to_next >= 2)
{
- vlib_buffer_t * p0, * p1;
- u32 pi0, pi1, adj_index0, adj_index1, wrong_next;
+ vlib_buffer_t *p0, *p1;
+ u32 pi0, pi1, lbi0, lbi1, wrong_next;
ip_lookup_next_t next0, next1;
- ip6_header_t * ip0, * ip1;
- ip_adjacency_t * adj0, * adj1;
- ip6_address_t * dst_addr0, * dst_addr1;
- u32 fib_index0, fib_index1;
- u32 flow_hash_config0, flow_hash_config1;
+ ip6_header_t *ip0, *ip1;
+ ip6_address_t *dst_addr0, *dst_addr1;
+ u32 fib_index0, fib_index1;
+ u32 flow_hash_config0, flow_hash_config1;
+ const dpo_id_t *dpo0, *dpo1;
+ const load_balance_t *lb0, *lb1;
/* Prefetch next iteration. */
{
- vlib_buffer_t * p2, * p3;
+ vlib_buffer_t *p2, *p3;
p2 = vlib_get_buffer (vm, from[2]);
p3 = vlib_get_buffer (vm, from[3]);
ip0 = vlib_buffer_get_current (p0);
ip1 = vlib_buffer_get_current (p1);
- if (is_indirect)
- {
- ip_adjacency_t * iadj0, * iadj1;
- iadj0 = ip_get_adjacency (lm, vnet_buffer(p0)->ip.adj_index[VLIB_TX]);
- iadj1 = ip_get_adjacency (lm, vnet_buffer(p1)->ip.adj_index[VLIB_TX]);
- dst_addr0 = &iadj0->indirect.next_hop.ip6;
- dst_addr1 = &iadj1->indirect.next_hop.ip6;
- }
- else
- {
- dst_addr0 = &ip0->dst_address;
- dst_addr1 = &ip1->dst_address;
- }
+ dst_addr0 = &ip0->dst_address;
+ dst_addr1 = &ip1->dst_address;
- fib_index0 = vec_elt (im->fib_index_by_sw_if_index, vnet_buffer (p0)->sw_if_index[VLIB_RX]);
- fib_index1 = vec_elt (im->fib_index_by_sw_if_index, vnet_buffer (p1)->sw_if_index[VLIB_RX]);
+ fib_index0 =
+ vec_elt (im->fib_index_by_sw_if_index,
+ vnet_buffer (p0)->sw_if_index[VLIB_RX]);
+ fib_index1 =
+ vec_elt (im->fib_index_by_sw_if_index,
+ vnet_buffer (p1)->sw_if_index[VLIB_RX]);
- fib_index0 = (vnet_buffer(p0)->sw_if_index[VLIB_TX] == (u32)~0) ?
- fib_index0 : vnet_buffer(p0)->sw_if_index[VLIB_TX];
- fib_index1 = (vnet_buffer(p1)->sw_if_index[VLIB_TX] == (u32)~0) ?
- fib_index1 : vnet_buffer(p1)->sw_if_index[VLIB_TX];
+ fib_index0 = (vnet_buffer (p0)->sw_if_index[VLIB_TX] == (u32) ~ 0) ?
+ fib_index0 : vnet_buffer (p0)->sw_if_index[VLIB_TX];
+ fib_index1 = (vnet_buffer (p1)->sw_if_index[VLIB_TX] == (u32) ~ 0) ?
+ fib_index1 : vnet_buffer (p1)->sw_if_index[VLIB_TX];
- adj_index0 = ip6_fib_lookup_with_table (im, fib_index0, dst_addr0);
- adj_index1 = ip6_fib_lookup_with_table (im, fib_index1, dst_addr1);
+ lbi0 = ip6_fib_table_fwding_lookup (im, fib_index0, dst_addr0);
+ lbi1 = ip6_fib_table_fwding_lookup (im, fib_index1, dst_addr1);
- adj0 = ip_get_adjacency (lm, adj_index0);
- adj1 = ip_get_adjacency (lm, adj_index1);
+ lb0 = load_balance_get (lbi0);
+ lb1 = load_balance_get (lbi1);
- if (PREDICT_FALSE (adj0->explicit_fib_index != ~0))
- {
- adj_index0 = ip6_fib_lookup_with_table
- (im, adj0->explicit_fib_index, dst_addr0);
- adj0 = ip_get_adjacency (lm, adj_index0);
- }
- if (PREDICT_FALSE (adj1->explicit_fib_index != ~0))
- {
- adj_index1 = ip6_fib_lookup_with_table
- (im, adj1->explicit_fib_index, dst_addr1);
- adj1 = ip_get_adjacency (lm, adj_index1);
- }
+ vnet_buffer (p0)->ip.flow_hash = vnet_buffer (p1)->ip.flow_hash = 0;
- next0 = adj0->lookup_next_index;
- next1 = adj1->lookup_next_index;
+ if (PREDICT_FALSE (lb0->lb_n_buckets > 1))
+ {
+ flow_hash_config0 = lb0->lb_hash_config;
+ vnet_buffer (p0)->ip.flow_hash =
+ ip6_compute_flow_hash (ip0, flow_hash_config0);
+ }
+ if (PREDICT_FALSE (lb1->lb_n_buckets > 1))
+ {
+ flow_hash_config1 = lb1->lb_hash_config;
+ vnet_buffer (p1)->ip.flow_hash =
+ ip6_compute_flow_hash (ip1, flow_hash_config1);
+ }
+
+ ASSERT (lb0->lb_n_buckets > 0);
+ ASSERT (lb1->lb_n_buckets > 0);
+ ASSERT (is_pow2 (lb0->lb_n_buckets));
+ ASSERT (is_pow2 (lb1->lb_n_buckets));
+ dpo0 = load_balance_get_bucket_i (lb0,
+ (vnet_buffer (p0)->ip.flow_hash &
+ lb0->lb_n_buckets_minus_1));
+ dpo1 = load_balance_get_bucket_i (lb1,
+ (vnet_buffer (p1)->ip.flow_hash &
+ lb1->lb_n_buckets_minus_1));
+
+ next0 = dpo0->dpoi_next_node;
+ next1 = dpo1->dpoi_next_node;
/* Only process the HBH Option Header if explicitly configured to do so */
- next0 = (ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) && im->hbh_enabled &&
- adj_index0 ? (ip_lookup_next_t) IP6_LOOKUP_NEXT_HOP_BY_HOP : adj0->lookup_next_index;
- next1 = (ip1->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) && im->hbh_enabled &&
- adj_index1 ? (ip_lookup_next_t) IP6_LOOKUP_NEXT_HOP_BY_HOP : adj1->lookup_next_index;
-
- vnet_buffer (p0)->ip.flow_hash =
- vnet_buffer(p1)->ip.flow_hash = 0;
-
- if (PREDICT_FALSE(adj0->n_adj > 1))
- {
- flow_hash_config0 =
- vec_elt_at_index (im->fibs,fib_index0)->flow_hash_config;
- vnet_buffer (p0)->ip.flow_hash =
- ip6_compute_flow_hash (ip0, flow_hash_config0);
- }
-
- if (PREDICT_FALSE(adj1->n_adj > 1))
- {
- flow_hash_config1 =
- vec_elt_at_index (im->fibs,fib_index0)->flow_hash_config;
-
- vnet_buffer (p1)->ip.flow_hash =
- ip6_compute_flow_hash (ip1, flow_hash_config1);
- }
-
- ASSERT (adj0->n_adj > 0);
- ASSERT (adj1->n_adj > 0);
- ASSERT (is_pow2 (adj0->n_adj));
- ASSERT (is_pow2 (adj1->n_adj));
- adj_index0 += (vnet_buffer (p0)->ip.flow_hash & (adj0->n_adj - 1));
- adj_index1 += (vnet_buffer (p1)->ip.flow_hash & (adj1->n_adj - 1));
-
- vnet_buffer (p0)->ip.adj_index[VLIB_TX] = adj_index0;
- vnet_buffer (p1)->ip.adj_index[VLIB_TX] = adj_index1;
-
- vlib_increment_combined_counter
- (cm, cpu_index, adj_index0, 1,
- vlib_buffer_length_in_chain (vm, p0));
- vlib_increment_combined_counter
- (cm, cpu_index, adj_index1, 1,
- vlib_buffer_length_in_chain (vm, p1));
+ if (PREDICT_FALSE
+ (ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS))
+ {
+ next0 = (dpo_is_adj (dpo0) && im->hbh_enabled) ?
+ (ip_lookup_next_t) IP6_LOOKUP_NEXT_HOP_BY_HOP : next0;
+ }
+ if (PREDICT_FALSE
+ (ip1->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS))
+ {
+ next1 = (dpo_is_adj (dpo1) && im->hbh_enabled) ?
+ (ip_lookup_next_t) IP6_LOOKUP_NEXT_HOP_BY_HOP : next1;
+ }
+ vnet_buffer (p0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index;
+ vnet_buffer (p1)->ip.adj_index[VLIB_TX] = dpo1->dpoi_index;
+
+ vlib_increment_combined_counter
+ (cm, cpu_index, lbi0, 1, vlib_buffer_length_in_chain (vm, p0));
+ vlib_increment_combined_counter
+ (cm, cpu_index, lbi1, 1, vlib_buffer_length_in_chain (vm, p1));
from += 2;
to_next += 2;
n_left_to_next -= 2;
n_left_from -= 2;
- wrong_next = (next0 != next) + 2*(next1 != next);
+ wrong_next = (next0 != next) + 2 * (next1 != next);
if (PREDICT_FALSE (wrong_next != 0))
- {
+ {
switch (wrong_next)
{
case 1:
/* A B B */
vlib_put_next_frame (vm, node, next, n_left_to_next);
next = next1;
- vlib_get_next_frame (vm, node, next, to_next, n_left_to_next);
+ vlib_get_next_frame (vm, node, next, to_next,
+ n_left_to_next);
}
}
}
}
-
+
while (n_left_from > 0 && n_left_to_next > 0)
{
- vlib_buffer_t * p0;
- ip6_header_t * ip0;
- u32 pi0, adj_index0;
+ vlib_buffer_t *p0;
+ ip6_header_t *ip0;
+ u32 pi0, lbi0;
ip_lookup_next_t next0;
- ip_adjacency_t * adj0;
- ip6_address_t * dst_addr0;
- u32 fib_index0, flow_hash_config0;
+ load_balance_t *lb0;
+ ip6_address_t *dst_addr0;
+ u32 fib_index0, flow_hash_config0;
+ const dpo_id_t *dpo0;
pi0 = from[0];
to_next[0] = pi0;
ip0 = vlib_buffer_get_current (p0);
- if (is_indirect)
- {
- ip_adjacency_t * iadj0;
- iadj0 = ip_get_adjacency (lm, vnet_buffer(p0)->ip.adj_index[VLIB_TX]);
- dst_addr0 = &iadj0->indirect.next_hop.ip6;
- }
- else
- {
- dst_addr0 = &ip0->dst_address;
- }
+ dst_addr0 = &ip0->dst_address;
- fib_index0 = vec_elt (im->fib_index_by_sw_if_index, vnet_buffer (p0)->sw_if_index[VLIB_RX]);
- fib_index0 = (vnet_buffer(p0)->sw_if_index[VLIB_TX] == (u32)~0) ?
- fib_index0 : vnet_buffer(p0)->sw_if_index[VLIB_TX];
+ fib_index0 =
+ vec_elt (im->fib_index_by_sw_if_index,
+ vnet_buffer (p0)->sw_if_index[VLIB_RX]);
+ fib_index0 =
+ (vnet_buffer (p0)->sw_if_index[VLIB_TX] ==
+ (u32) ~ 0) ? fib_index0 : vnet_buffer (p0)->sw_if_index[VLIB_TX];
- flow_hash_config0 =
- vec_elt_at_index (im->fibs,fib_index0)->flow_hash_config;
+ flow_hash_config0 = ip6_fib_get (fib_index0)->flow_hash_config;
- adj_index0 = ip6_fib_lookup_with_table (im, fib_index0, dst_addr0);
+ lbi0 = ip6_fib_table_fwding_lookup (im, fib_index0, dst_addr0);
- adj0 = ip_get_adjacency (lm, adj_index0);
-
- if (PREDICT_FALSE (adj0->explicit_fib_index != ~0))
- {
- adj_index0 = ip6_fib_lookup_with_table
- (im, adj0->explicit_fib_index, dst_addr0);
- adj0 = ip_get_adjacency (lm, adj_index0);
- }
+ lb0 = load_balance_get (lbi0);
- /* Only process the HBH Option Header if explicitly configured to do so */
- next0 = (ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) && im->hbh_enabled &&
- adj_index0 ? (ip_lookup_next_t) IP6_LOOKUP_NEXT_HOP_BY_HOP : adj0->lookup_next_index;
+ vnet_buffer (p0)->ip.flow_hash = 0;
- vnet_buffer (p0)->ip.flow_hash = 0;
-
- if (PREDICT_FALSE(adj0->n_adj > 1))
- {
- flow_hash_config0 =
- vec_elt_at_index (im->fibs,fib_index0)->flow_hash_config;
- vnet_buffer (p0)->ip.flow_hash =
- ip6_compute_flow_hash (ip0, flow_hash_config0);
- }
+ if (PREDICT_FALSE (lb0->lb_n_buckets > 1))
+ {
+ flow_hash_config0 = lb0->lb_hash_config;
+ vnet_buffer (p0)->ip.flow_hash =
+ ip6_compute_flow_hash (ip0, flow_hash_config0);
+ }
- ASSERT (adj0->n_adj > 0);
- ASSERT (is_pow2 (adj0->n_adj));
- adj_index0 += (vnet_buffer (p0)->ip.flow_hash & (adj0->n_adj - 1));
+ ASSERT (lb0->lb_n_buckets > 0);
+ ASSERT (is_pow2 (lb0->lb_n_buckets));
+ dpo0 = load_balance_get_bucket_i (lb0,
+ (vnet_buffer (p0)->ip.flow_hash &
+ lb0->lb_n_buckets_minus_1));
+ next0 = dpo0->dpoi_next_node;
- vnet_buffer (p0)->ip.adj_index[VLIB_TX] = adj_index0;
+ /* Only process the HBH Option Header if explicitly configured to do so */
+ if (PREDICT_FALSE
+ (ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS))
+ {
+ next0 = (dpo_is_adj (dpo0) && im->hbh_enabled) ?
+ (ip_lookup_next_t) IP6_LOOKUP_NEXT_HOP_BY_HOP : next0;
+ }
+ vnet_buffer (p0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index;
- vlib_increment_combined_counter
- (cm, cpu_index, adj_index0, 1,
- vlib_buffer_length_in_chain (vm, p0));
+ vlib_increment_combined_counter
+ (cm, cpu_index, lbi0, 1, vlib_buffer_length_in_chain (vm, p0));
from += 1;
to_next += 1;
n_left_to_next += 1;
vlib_put_next_frame (vm, node, next, n_left_to_next);
next = next0;
- vlib_get_next_frame (vm, node, next,
- to_next, n_left_to_next);
+ vlib_get_next_frame (vm, node, next, to_next, n_left_to_next);
to_next[0] = pi0;
to_next += 1;
n_left_to_next -= 1;
}
if (node->flags & VLIB_NODE_FLAG_TRACE)
- ip6_forward_next_trace(vm, node, frame, VLIB_TX);
+ ip6_forward_next_trace (vm, node, frame, VLIB_TX);
return frame->n_vectors;
}
-void ip6_adjacency_set_interface_route (vnet_main_t * vnm,
- ip_adjacency_t * adj,
- u32 sw_if_index,
- u32 if_address_index)
-{
- vnet_hw_interface_t * hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
- ip_lookup_next_t n;
- u32 node_index;
-
- if (hw->hw_class_index == ethernet_hw_interface_class.index
- || hw->hw_class_index == srp_hw_interface_class.index)
- {
- n = IP_LOOKUP_NEXT_ARP;
- node_index = ip6_discover_neighbor_node.index;
- adj->if_address_index = if_address_index;
- adj->arp.next_hop.ip6.as_u64[0] = 0;
- adj->arp.next_hop.ip6.as_u64[1] = 0;
- }
- else
- {
- n = IP_LOOKUP_NEXT_REWRITE;
- node_index = ip6_rewrite_node.index;
- }
-
- adj->lookup_next_index = n;
- adj->explicit_fib_index = ~0;
-
- vnet_rewrite_for_sw_interface
- (vnm,
- VNET_L3_PACKET_TYPE_IP6,
- sw_if_index,
- node_index,
- VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST,
- &adj->rewrite_header,
- sizeof (adj->rewrite_data));
-}
-
static void
ip6_add_interface_routes (vnet_main_t * vnm, u32 sw_if_index,
ip6_main_t * im, u32 fib_index,
ip_interface_address_t * a)
{
- ip_lookup_main_t * lm = &im->lookup_main;
- ip_adjacency_t * adj;
- ip6_address_t * address = ip_interface_address_get_address (lm, a);
- ip6_add_del_route_args_t x;
- vnet_hw_interface_t * hw_if = vnet_get_sup_hw_interface (vnm, sw_if_index);
- u32 classify_table_index;
-
- /* Add e.g. 1.0.0.0/8 as interface route (arp for Ethernet). */
- x.table_index_or_table_id = fib_index;
- x.flags = (IP6_ROUTE_FLAG_ADD
- | IP6_ROUTE_FLAG_FIB_INDEX
- | IP6_ROUTE_FLAG_NO_REDISTRIBUTE);
- x.dst_address = address[0];
- x.dst_address_length = a->address_length;
- x.n_add_adj = 0;
- x.add_adj = 0;
+ ip_lookup_main_t *lm = &im->lookup_main;
+ ip6_address_t *address = ip_interface_address_get_address (lm, a);
+ fib_prefix_t pfx = {
+ .fp_len = a->address_length,
+ .fp_proto = FIB_PROTOCOL_IP6,
+ .fp_addr.ip6 = *address,
+ };
a->neighbor_probe_adj_index = ~0;
if (a->address_length < 128)
{
- adj = ip_add_adjacency (lm, /* template */ 0, /* block size */ 1,
- &x.adj_index);
- ip6_adjacency_set_interface_route (vnm, adj, sw_if_index, a - lm->if_address_pool);
- ip_call_add_del_adjacency_callbacks (lm, x.adj_index, /* is_del */ 0);
- ip6_add_del_route (im, &x);
- a->neighbor_probe_adj_index = x.adj_index;
- }
+ fib_node_index_t fei;
- /* Add e.g. ::1/128 as local to this host. */
- adj = ip_add_adjacency (lm, /* template */ 0, /* block size */ 1,
- &x.adj_index);
+ fei = fib_table_entry_update_one_path (fib_index, &pfx, FIB_SOURCE_INTERFACE, (FIB_ENTRY_FLAG_CONNECTED | FIB_ENTRY_FLAG_ATTACHED), FIB_PROTOCOL_IP6, NULL, /* No next-hop address */
+ sw_if_index, ~0, // invalid FIB index
+ 1, NULL, // no label stack
+ FIB_ROUTE_PATH_FLAG_NONE);
+ a->neighbor_probe_adj_index = fib_entry_get_adj (fei);
+ }
- classify_table_index = ~0;
+ pfx.fp_len = 128;
if (sw_if_index < vec_len (lm->classify_table_index_by_sw_if_index))
- classify_table_index = lm->classify_table_index_by_sw_if_index [sw_if_index];
- if (classify_table_index != (u32) ~0)
{
- adj->lookup_next_index = IP_LOOKUP_NEXT_CLASSIFY;
- adj->classify.table_index = classify_table_index;
+ u32 classify_table_index =
+ lm->classify_table_index_by_sw_if_index[sw_if_index];
+ if (classify_table_index != (u32) ~ 0)
+ {
+ dpo_id_t dpo = DPO_INVALID;
+
+ dpo_set (&dpo,
+ DPO_CLASSIFY,
+ DPO_PROTO_IP6,
+ classify_dpo_create (DPO_PROTO_IP6, classify_table_index));
+
+ fib_table_entry_special_dpo_add (fib_index,
+ &pfx,
+ FIB_SOURCE_CLASSIFY,
+ FIB_ENTRY_FLAG_NONE, &dpo);
+ dpo_reset (&dpo);
+ }
}
- else
- adj->lookup_next_index = IP_LOOKUP_NEXT_LOCAL;
-
- adj->if_address_index = a - lm->if_address_pool;
- adj->rewrite_header.sw_if_index = sw_if_index;
- adj->rewrite_header.max_l3_packet_bytes = hw_if->max_l3_packet_bytes[VLIB_RX];
- adj->rewrite_header.data_bytes = 0;
- ip_call_add_del_adjacency_callbacks (lm, x.adj_index, /* is_del */ 0);
- x.dst_address_length = 128;
- ip6_add_del_route (im, &x);
+
+ fib_table_entry_update_one_path (fib_index, &pfx, FIB_SOURCE_INTERFACE, (FIB_ENTRY_FLAG_CONNECTED | FIB_ENTRY_FLAG_LOCAL), FIB_PROTOCOL_IP6, &pfx.fp_addr, sw_if_index, ~0, // invalid FIB index
+ 1, NULL, FIB_ROUTE_PATH_FLAG_NONE);
}
static void
-ip6_del_interface_routes (ip6_main_t * im, u32 fib_index,
+ip6_del_interface_routes (ip6_main_t * im,
+ u32 fib_index,
ip6_address_t * address, u32 address_length)
{
- ip6_add_del_route_args_t x;
+ fib_prefix_t pfx = {
+ .fp_len = address_length,
+ .fp_proto = FIB_PROTOCOL_IP6,
+ .fp_addr.ip6 = *address,
+ };
+
+ if (pfx.fp_len < 128)
+ {
+ fib_table_entry_delete (fib_index, &pfx, FIB_SOURCE_INTERFACE);
- /* Add e.g. 1.0.0.0/8 as interface route (arp for Ethernet). */
- x.table_index_or_table_id = fib_index;
- x.flags = (IP6_ROUTE_FLAG_DEL
- | IP6_ROUTE_FLAG_FIB_INDEX
- | IP6_ROUTE_FLAG_NO_REDISTRIBUTE);
- x.dst_address = address[0];
- x.dst_address_length = address_length;
- x.adj_index = ~0;
- x.n_add_adj = 0;
- x.add_adj = 0;
+ }
+
+ pfx.fp_len = 128;
+ fib_table_entry_delete (fib_index, &pfx, FIB_SOURCE_INTERFACE);
+}
- if (address_length < 128)
+void
+ip6_sw_interface_enable_disable (u32 sw_if_index, u32 is_enable)
+{
+ ip6_main_t *im = &ip6_main;
+
+ vec_validate_init_empty (im->ip_enabled_by_sw_if_index, sw_if_index, 0);
+
+ /*
+ * enable/disable only on the 1<->0 transition
+ */
+ if (is_enable)
+ {
+ if (1 != ++im->ip_enabled_by_sw_if_index[sw_if_index])
+ return;
+ }
+ else
{
- /* Don't wipe out fe80::0/64 */
- if (address_length != 64 ||
- address[0].as_u64[0] != clib_net_to_host_u64(0xfe80000000000000ULL))
- ip6_add_del_route (im, &x);
+ ASSERT (im->ip_enabled_by_sw_if_index[sw_if_index] > 0);
+ if (0 != --im->ip_enabled_by_sw_if_index[sw_if_index])
+ return;
}
- x.dst_address_length = 128;
- ip6_add_del_route (im, &x);
+ vnet_feature_enable_disable ("ip6-unicast", "ip6-lookup", sw_if_index,
+ is_enable, 0, 0);
+
+ vnet_feature_enable_disable ("ip6-multicast", "ip6-lookup", sw_if_index,
+ is_enable, 0, 0);
- ip6_delete_matching_routes (im,
- fib_index,
- IP6_ROUTE_FLAG_FIB_INDEX,
- address,
- address_length);
}
-typedef struct {
- u32 sw_if_index;
- ip6_address_t address;
- u32 length;
-} ip6_interface_address_t;
+/* get first interface address */
+ip6_address_t *
+ip6_interface_first_address (ip6_main_t * im,
+ u32 sw_if_index,
+ ip_interface_address_t ** result_ia)
+{
+ ip_lookup_main_t *lm = &im->lookup_main;
+ ip_interface_address_t *ia = 0;
+ ip6_address_t *result = 0;
-static clib_error_t *
-ip6_add_del_interface_address_internal (vlib_main_t * vm,
- u32 sw_if_index,
- ip6_address_t * new_address,
- u32 new_length,
- u32 redistribute,
- u32 insert_routes,
- u32 is_del);
+ /* *INDENT-OFF* */
+ foreach_ip_interface_address (lm, ia, sw_if_index,
+ 1 /* honor unnumbered */,
+ ({
+ ip6_address_t * a = ip_interface_address_get_address (lm, ia);
+ result = a;
+ break;
+ }));
+ /* *INDENT-ON* */
+ if (result_ia)
+ *result_ia = result ? ia : 0;
+ return result;
+}
-static clib_error_t *
-ip6_add_del_interface_address_internal (vlib_main_t * vm,
- u32 sw_if_index,
- ip6_address_t * address,
- u32 address_length,
- u32 redistribute,
- u32 insert_routes,
- u32 is_del)
-{
- vnet_main_t * vnm = vnet_get_main();
- ip6_main_t * im = &ip6_main;
- ip_lookup_main_t * lm = &im->lookup_main;
- clib_error_t * error;
+clib_error_t *
+ip6_add_del_interface_address (vlib_main_t * vm,
+ u32 sw_if_index,
+ ip6_address_t * address,
+ u32 address_length, u32 is_del)
+{
+ vnet_main_t *vnm = vnet_get_main ();
+ ip6_main_t *im = &ip6_main;
+ ip_lookup_main_t *lm = &im->lookup_main;
+ clib_error_t *error;
u32 if_address_index;
- ip6_address_fib_t ip6_af, * addr_fib = 0;
+ ip6_address_fib_t ip6_af, *addr_fib = 0;
vec_validate (im->fib_index_by_sw_if_index, sw_if_index);
ip6_addr_fib_init (&ip6_af, address,
uword elts_before = pool_elts (lm->if_address_pool);
error = ip_interface_address_add_del
- (lm,
- sw_if_index,
- addr_fib,
- address_length,
- is_del,
- &if_address_index);
+ (lm, sw_if_index, addr_fib, address_length, is_del, &if_address_index);
if (error)
goto done;
goto done;
}
- if (vnet_sw_interface_is_admin_up (vnm, sw_if_index) && insert_routes)
- {
- if (is_del)
- ip6_del_interface_routes (im, ip6_af.fib_index, address,
- address_length);
+ ip6_sw_interface_enable_disable (sw_if_index, !is_del);
- else
- ip6_add_interface_routes (vnm, sw_if_index,
- im, ip6_af.fib_index,
- pool_elt_at_index (lm->if_address_pool, if_address_index));
- }
+ if (is_del)
+ ip6_del_interface_routes (im, ip6_af.fib_index, address, address_length);
+ else
+ ip6_add_interface_routes (vnm, sw_if_index,
+ im, ip6_af.fib_index,
+ pool_elt_at_index (lm->if_address_pool,
+ if_address_index));
{
- ip6_add_del_interface_address_callback_t * cb;
+ ip6_add_del_interface_address_callback_t *cb;
vec_foreach (cb, im->add_del_interface_address_callbacks)
cb->function (im, cb->function_opaque, sw_if_index,
- address, address_length,
- if_address_index,
- is_del);
+ address, address_length, if_address_index, is_del);
}
- done:
+done:
vec_free (addr_fib);
return error;
}
clib_error_t *
-ip6_add_del_interface_address (vlib_main_t * vm, u32 sw_if_index,
- ip6_address_t * address, u32 address_length,
- u32 is_del)
-{
- return ip6_add_del_interface_address_internal
- (vm, sw_if_index, address, address_length,
- /* redistribute */ 1,
- /* insert_routes */ 1,
- is_del);
-}
-
-clib_error_t *
-ip6_sw_interface_admin_up_down (vnet_main_t * vnm,
- u32 sw_if_index,
- u32 flags)
+ip6_sw_interface_admin_up_down (vnet_main_t * vnm, u32 sw_if_index, u32 flags)
{
- ip6_main_t * im = &ip6_main;
- ip_interface_address_t * ia;
- ip6_address_t * a;
+ ip6_main_t *im = &ip6_main;
+ ip_interface_address_t *ia;
+ ip6_address_t *a;
u32 is_admin_up, fib_index;
/* Fill in lookup tables with default table (0). */
vec_validate (im->fib_index_by_sw_if_index, sw_if_index);
- vec_validate_init_empty (im->lookup_main.if_address_pool_index_by_sw_if_index, sw_if_index, ~0);
+ vec_validate_init_empty (im->
+ lookup_main.if_address_pool_index_by_sw_if_index,
+ sw_if_index, ~0);
is_admin_up = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) != 0;
fib_index = vec_elt (im->fib_index_by_sw_if_index, sw_if_index);
- foreach_ip_interface_address (&im->lookup_main, ia, sw_if_index,
+ /* *INDENT-OFF* */
+ foreach_ip_interface_address (&im->lookup_main, ia, sw_if_index,
0 /* honor unnumbered */,
({
a = ip_interface_address_get_address (&im->lookup_main, ia);
ip6_del_interface_routes (im, fib_index,
a, ia->address_length);
}));
+ /* *INDENT-ON* */
+
+ return 0;
+}
+
+VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION (ip6_sw_interface_admin_up_down);
+
+/* Built-in ip6 unicast rx feature path definition */
+/* *INDENT-OFF* */
+VNET_FEATURE_ARC_INIT (ip6_unicast, static) =
+{
+ .arc_name = "ip6-unicast",
+ .start_nodes = VNET_FEATURES ("ip6-input"),
+ .arc_index_ptr = &ip6_main.lookup_main.ucast_feature_arc_index,
+};
+
+VNET_FEATURE_INIT (ip6_flow_classify, static) =
+{
+ .arc_name = "ip6-unicast",
+ .node_name = "ip6-flow-classify",
+ .runs_before = VNET_FEATURES ("ip6-inacl"),
+};
+
+VNET_FEATURE_INIT (ip6_inacl, static) =
+{
+ .arc_name = "ip6-unicast",
+ .node_name = "ip6-inacl",
+ .runs_before = VNET_FEATURES ("ip6-policer-classify"),
+};
+
+VNET_FEATURE_INIT (ip6_policer_classify, static) =
+{
+ .arc_name = "ip6-unicast",
+ .node_name = "ip6-policer-classify",
+ .runs_before = VNET_FEATURES ("ipsec-input-ip6"),
+};
+
+VNET_FEATURE_INIT (ip6_ipsec, static) =
+{
+ .arc_name = "ip6-unicast",
+ .node_name = "ipsec-input-ip6",
+ .runs_before = VNET_FEATURES ("l2tp-decap"),
+};
+
+VNET_FEATURE_INIT (ip6_l2tp, static) =
+{
+ .arc_name = "ip6-unicast",
+ .node_name = "l2tp-decap",
+ .runs_before = VNET_FEATURES ("vpath-input-ip6"),
+};
+
+VNET_FEATURE_INIT (ip6_vpath, static) =
+{
+ .arc_name = "ip6-unicast",
+ .node_name = "vpath-input-ip6",
+ .runs_before = VNET_FEATURES ("ip6-lookup"),
+};
+
+VNET_FEATURE_INIT (ip6_lookup, static) =
+{
+ .arc_name = "ip6-unicast",
+ .node_name = "ip6-lookup",
+ .runs_before = VNET_FEATURES ("ip6-drop"),
+};
+
+VNET_FEATURE_INIT (ip6_drop, static) =
+{
+ .arc_name = "ip6-unicast",
+ .node_name = "ip6-drop",
+ .runs_before = 0, /*last feature*/
+};
+
+/* Built-in ip6 multicast rx feature path definition (none now) */
+VNET_FEATURE_ARC_INIT (ip6_multicast, static) =
+{
+ .arc_name = "ip6-multicast",
+ .start_nodes = VNET_FEATURES ("ip6-input"),
+ .arc_index_ptr = &ip6_main.lookup_main.mcast_feature_arc_index,
+};
+
+VNET_FEATURE_INIT (ip6_vpath_mc, static) = {
+ .arc_name = "ip6-multicast",
+ .node_name = "vpath-input-ip6",
+ .runs_before = VNET_FEATURES ("ip6-lookup"),
+};
+
+VNET_FEATURE_INIT (ip6_mc_lookup, static) = {
+ .arc_name = "ip6-multicast",
+ .node_name = "ip6-lookup",
+ .runs_before = VNET_FEATURES ("ip6-drop"),
+};
+
+VNET_FEATURE_INIT (ip6_drop_mc, static) = {
+ .arc_name = "ip6-multicast",
+ .node_name = "ip6-drop",
+ .runs_before = 0, /* last feature */
+};
+
+/* Built-in ip4 tx feature path definition */
+VNET_FEATURE_ARC_INIT (ip6_output, static) =
+{
+ .arc_name = "ip6-output",
+ .start_nodes = VNET_FEATURES ("ip6-rewrite", "ip6-midchain"),
+ .arc_index_ptr = &ip6_main.lookup_main.output_feature_arc_index,
+};
+
+VNET_FEATURE_INIT (ip6_ipsec_output, static) = {
+ .arc_name = "ip6-output",
+ .node_name = "ipsec-output-ip6",
+ .runs_before = VNET_FEATURES ("interface-output"),
+};
+
+VNET_FEATURE_INIT (ip6_interface_output, static) = {
+ .arc_name = "ip6-output",
+ .node_name = "interface-output",
+ .runs_before = 0, /* not before any other features */
+};
+/* *INDENT-ON* */
+
+clib_error_t *
+ip6_sw_interface_add_del (vnet_main_t * vnm, u32 sw_if_index, u32 is_add)
+{
+ vnet_feature_enable_disable ("ip6-unicast", "ip6-drop", sw_if_index,
+ is_add, 0, 0);
+
+ vnet_feature_enable_disable ("ip6-multicast", "ip6-drop", sw_if_index,
+ is_add, 0, 0);
+
+ vnet_feature_enable_disable ("ip6-output", "interface-output", sw_if_index,
+ is_add, 0, 0);
+
+ return /* no error */ 0;
+}
+
+VNET_SW_INTERFACE_ADD_DEL_FUNCTION (ip6_sw_interface_add_del);
+
+static uword
+ip6_lookup (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return ip6_lookup_inline (vm, node, frame);
+}
+
+static u8 *format_ip6_lookup_trace (u8 * s, va_list * args);
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ip6_lookup_node) =
+{
+ .function = ip6_lookup,
+ .name = "ip6-lookup",
+ .vector_size = sizeof (u32),
+ .format_trace = format_ip6_lookup_trace,
+ .n_next_nodes = IP6_LOOKUP_N_NEXT,
+ .next_nodes = IP6_LOOKUP_NEXT_NODES,
+};
+/* *INDENT-ON* */
+
+VLIB_NODE_FUNCTION_MULTIARCH (ip6_lookup_node, ip6_lookup);
+
+always_inline uword
+ip6_load_balance (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ vlib_combined_counter_main_t *cm = &load_balance_main.lbm_via_counters;
+ u32 n_left_from, n_left_to_next, *from, *to_next;
+ ip_lookup_next_t next;
+ u32 cpu_index = os_get_cpu_number ();
+ ip6_main_t *im = &ip6_main;
+
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ next = node->cached_next_index;
+
+ if (node->flags & VLIB_NODE_FLAG_TRACE)
+ ip6_forward_next_trace (vm, node, frame, VLIB_TX);
+
+ while (n_left_from > 0)
+ {
+ vlib_get_next_frame (vm, node, next, to_next, n_left_to_next);
+
+
+ while (n_left_from >= 4 && n_left_to_next >= 2)
+ {
+ ip_lookup_next_t next0, next1;
+ const load_balance_t *lb0, *lb1;
+ vlib_buffer_t *p0, *p1;
+ u32 pi0, lbi0, hc0, pi1, lbi1, hc1;
+ const ip6_header_t *ip0, *ip1;
+ const dpo_id_t *dpo0, *dpo1;
+
+ /* Prefetch next iteration. */
+ {
+ vlib_buffer_t *p2, *p3;
+
+ p2 = vlib_get_buffer (vm, from[2]);
+ p3 = vlib_get_buffer (vm, from[3]);
+
+ vlib_prefetch_buffer_header (p2, STORE);
+ vlib_prefetch_buffer_header (p3, STORE);
+
+ CLIB_PREFETCH (p2->data, sizeof (ip0[0]), STORE);
+ CLIB_PREFETCH (p3->data, sizeof (ip0[0]), STORE);
+ }
+
+ pi0 = to_next[0] = from[0];
+ pi1 = to_next[1] = from[1];
+
+ from += 2;
+ n_left_from -= 2;
+ to_next += 2;
+ n_left_to_next -= 2;
+
+ p0 = vlib_get_buffer (vm, pi0);
+ p1 = vlib_get_buffer (vm, pi1);
+
+ ip0 = vlib_buffer_get_current (p0);
+ ip1 = vlib_buffer_get_current (p1);
+ lbi0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX];
+ lbi1 = vnet_buffer (p1)->ip.adj_index[VLIB_TX];
+
+ lb0 = load_balance_get (lbi0);
+ lb1 = load_balance_get (lbi1);
+
+ /*
+ * this node is for via FIBs we can re-use the hash value from the
+ * to node if present.
+ * We don't want to use the same hash value at each level in the recursion
+ * graph as that would lead to polarisation
+ */
+ hc0 = vnet_buffer (p0)->ip.flow_hash = 0;
+ hc1 = vnet_buffer (p1)->ip.flow_hash = 0;
+
+ if (PREDICT_FALSE (lb0->lb_n_buckets > 1))
+ {
+ if (PREDICT_TRUE (vnet_buffer (p0)->ip.flow_hash))
+ {
+ hc0 = vnet_buffer (p0)->ip.flow_hash =
+ vnet_buffer (p0)->ip.flow_hash >> 1;
+ }
+ else
+ {
+ hc0 = vnet_buffer (p0)->ip.flow_hash =
+ ip6_compute_flow_hash (ip0, hc0);
+ }
+ }
+ if (PREDICT_FALSE (lb1->lb_n_buckets > 1))
+ {
+ if (PREDICT_TRUE (vnet_buffer (p1)->ip.flow_hash))
+ {
+ hc1 = vnet_buffer (p1)->ip.flow_hash =
+ vnet_buffer (p1)->ip.flow_hash >> 1;
+ }
+ else
+ {
+ hc1 = vnet_buffer (p1)->ip.flow_hash =
+ ip6_compute_flow_hash (ip1, hc1);
+ }
+ }
- return 0;
-}
+ dpo0 =
+ load_balance_get_bucket_i (lb0,
+ hc0 & (lb0->lb_n_buckets_minus_1));
+ dpo1 =
+ load_balance_get_bucket_i (lb1,
+ hc1 & (lb1->lb_n_buckets_minus_1));
-VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION (ip6_sw_interface_admin_up_down);
+ next0 = dpo0->dpoi_next_node;
+ next1 = dpo1->dpoi_next_node;
-/* Built-in ip6 unicast rx feature path definition */
-VNET_IP6_UNICAST_FEATURE_INIT (ip6_inacl, static) = {
- .node_name = "ip6-inacl",
- .runs_before = {"ip6-policer-classify", 0},
- .feature_index = &ip6_main.ip6_unicast_rx_feature_check_access,
-};
+ /* Only process the HBH Option Header if explicitly configured to do so */
+ if (PREDICT_FALSE
+ (ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS))
+ {
+ next0 = (dpo_is_adj (dpo0) && im->hbh_enabled) ?
+ (ip_lookup_next_t) IP6_LOOKUP_NEXT_HOP_BY_HOP : next0;
+ }
+ /* Only process the HBH Option Header if explicitly configured to do so */
+ if (PREDICT_FALSE
+ (ip1->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS))
+ {
+ next1 = (dpo_is_adj (dpo1) && im->hbh_enabled) ?
+ (ip_lookup_next_t) IP6_LOOKUP_NEXT_HOP_BY_HOP : next1;
+ }
-VNET_IP6_UNICAST_FEATURE_INIT (ip6_policer_classify, static) = {
- .node_name = "ip6-policer-classify",
- .runs_before = {"ipsec-input-ip6", 0},
- .feature_index = &ip6_main.ip6_unicast_rx_feature_policer_classify,
-};
+ vnet_buffer (p0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index;
+ vnet_buffer (p1)->ip.adj_index[VLIB_TX] = dpo1->dpoi_index;
-VNET_IP6_UNICAST_FEATURE_INIT (ip6_ipsec, static) = {
- .node_name = "ipsec-input-ip6",
- .runs_before = {"l2tp-decap", 0},
- .feature_index = &ip6_main.ip6_unicast_rx_feature_ipsec,
-};
+ vlib_increment_combined_counter
+ (cm, cpu_index, lbi0, 1, vlib_buffer_length_in_chain (vm, p0));
+ vlib_increment_combined_counter
+ (cm, cpu_index, lbi1, 1, vlib_buffer_length_in_chain (vm, p1));
-VNET_IP6_UNICAST_FEATURE_INIT (ip6_l2tp, static) = {
- .node_name = "l2tp-decap",
- .runs_before = {"vpath-input-ip6", 0},
- .feature_index = &ip6_main.ip6_unicast_rx_feature_l2tp_decap,
-};
+ vlib_validate_buffer_enqueue_x2 (vm, node, next,
+ to_next, n_left_to_next,
+ pi0, pi1, next0, next1);
+ }
-VNET_IP6_UNICAST_FEATURE_INIT (ip6_vpath, static) = {
- .node_name = "vpath-input-ip6",
- .runs_before = {"ip6-lookup", 0},
- .feature_index = &ip6_main.ip6_unicast_rx_feature_vpath,
-};
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ ip_lookup_next_t next0;
+ const load_balance_t *lb0;
+ vlib_buffer_t *p0;
+ u32 pi0, lbi0, hc0;
+ const ip6_header_t *ip0;
+ const dpo_id_t *dpo0;
-VNET_IP6_UNICAST_FEATURE_INIT (ip6_lookup, static) = {
- .node_name = "ip6-lookup",
- .runs_before = {0}, /* not before any other features */
- .feature_index = &ip6_main.ip6_unicast_rx_feature_lookup,
-};
+ pi0 = from[0];
+ to_next[0] = pi0;
+ from += 1;
+ to_next += 1;
+ n_left_to_next -= 1;
+ n_left_from -= 1;
-/* Built-in ip6 multicast rx feature path definition (none now) */
-VNET_IP6_MULTICAST_FEATURE_INIT (ip4_vpath_mc, static) = {
- .node_name = "vpath-input-ip6",
- .runs_before = {"ip6-lookup", 0},
- .feature_index = &ip6_main.ip6_multicast_rx_feature_vpath,
-};
+ p0 = vlib_get_buffer (vm, pi0);
-VNET_IP6_MULTICAST_FEATURE_INIT (ip6_lookup, static) = {
- .node_name = "ip6-lookup",
- .runs_before = {0}, /* not before any other features */
- .feature_index = &ip6_main.ip6_multicast_rx_feature_lookup,
-};
+ ip0 = vlib_buffer_get_current (p0);
+ lbi0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX];
-static char * feature_start_nodes[] =
- {"ip6-input"};
+ lb0 = load_balance_get (lbi0);
-static clib_error_t *
-ip6_feature_init (vlib_main_t * vm, ip6_main_t * im)
-{
- ip_lookup_main_t * lm = &im->lookup_main;
- clib_error_t * error;
- vnet_cast_t cast;
-
- for (cast = 0; cast < VNET_N_CAST; cast++)
- {
- ip_config_main_t * cm = &lm->rx_config_mains[cast];
- vnet_config_main_t * vcm = &cm->config_main;
-
- if ((error = ip_feature_init_cast (vm, cm, vcm,
- feature_start_nodes,
- ARRAY_LEN(feature_start_nodes),
- cast,
- 0 /* is_ip4 */)))
- return error;
- }
- return 0;
-}
+ hc0 = vnet_buffer (p0)->ip.flow_hash = 0;
+ if (PREDICT_FALSE (lb0->lb_n_buckets > 1))
+ {
+ if (PREDICT_TRUE (vnet_buffer (p0)->ip.flow_hash))
+ {
+ hc0 = vnet_buffer (p0)->ip.flow_hash =
+ vnet_buffer (p0)->ip.flow_hash >> 1;
+ }
+ else
+ {
+ hc0 = vnet_buffer (p0)->ip.flow_hash =
+ ip6_compute_flow_hash (ip0, hc0);
+ }
+ }
+ dpo0 =
+ load_balance_get_bucket_i (lb0,
+ hc0 & (lb0->lb_n_buckets_minus_1));
-clib_error_t *
-ip6_sw_interface_add_del (vnet_main_t * vnm,
- u32 sw_if_index,
- u32 is_add)
-{
- vlib_main_t * vm = vnm->vlib_main;
- ip6_main_t * im = &ip6_main;
- ip_lookup_main_t * lm = &im->lookup_main;
- u32 ci, cast;
- u32 feature_index;
+ next0 = dpo0->dpoi_next_node;
+ vnet_buffer (p0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index;
- for (cast = 0; cast < VNET_N_CAST; cast++)
- {
- ip_config_main_t * cm = &lm->rx_config_mains[cast];
- vnet_config_main_t * vcm = &cm->config_main;
+ /* Only process the HBH Option Header if explicitly configured to do so */
+ if (PREDICT_FALSE
+ (ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS))
+ {
+ next0 = (dpo_is_adj (dpo0) && im->hbh_enabled) ?
+ (ip_lookup_next_t) IP6_LOOKUP_NEXT_HOP_BY_HOP : next0;
+ }
- vec_validate_init_empty (cm->config_index_by_sw_if_index, sw_if_index, ~0);
- ci = cm->config_index_by_sw_if_index[sw_if_index];
+ vlib_increment_combined_counter
+ (cm, cpu_index, lbi0, 1, vlib_buffer_length_in_chain (vm, p0));
- if (cast == VNET_UNICAST)
- feature_index = im->ip6_unicast_rx_feature_lookup;
- else
- feature_index = im->ip6_multicast_rx_feature_lookup;
-
- if (is_add)
- ci = vnet_config_add_feature (vm, vcm,
- ci,
- feature_index,
- /* config data */ 0,
- /* # bytes of config data */ 0);
- else
- ci = vnet_config_del_feature (vm, vcm,
- ci,
- feature_index,
- /* config data */ 0,
- /* # bytes of config data */ 0);
+ vlib_validate_buffer_enqueue_x1 (vm, node, next,
+ to_next, n_left_to_next,
+ pi0, next0);
+ }
- cm->config_index_by_sw_if_index[sw_if_index] = ci;
+ vlib_put_next_frame (vm, node, next, n_left_to_next);
}
- return /* no error */ 0;
-}
-
-VNET_SW_INTERFACE_ADD_DEL_FUNCTION (ip6_sw_interface_add_del);
-static uword
-ip6_lookup (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- return ip6_lookup_inline (vm, node, frame, /* is_indirect */ 0);
+ return frame->n_vectors;
}
-static u8 * format_ip6_lookup_trace (u8 * s, va_list * args);
-
-VLIB_REGISTER_NODE (ip6_lookup_node) = {
- .function = ip6_lookup,
- .name = "ip6-lookup",
- .vector_size = sizeof (u32),
-
- .format_trace = format_ip6_lookup_trace,
-
- .n_next_nodes = IP6_LOOKUP_N_NEXT,
- .next_nodes = IP6_LOOKUP_NEXT_NODES,
-};
-
-VLIB_NODE_FUNCTION_MULTIARCH (ip6_lookup_node, ip6_lookup)
-
-static uword
-ip6_indirect (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ip6_load_balance_node) =
{
- return ip6_lookup_inline (vm, node, frame, /* is_indirect */ 1);
-}
-
-
-VLIB_REGISTER_NODE (ip6_indirect_node) = {
- .function = ip6_indirect,
- .name = "ip6-indirect",
+ .function = ip6_load_balance,
+ .name = "ip6-load-balance",
.vector_size = sizeof (u32),
.sibling_of = "ip6-lookup",
.format_trace = format_ip6_lookup_trace,
- .n_next_nodes = 0,
};
+/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (ip6_indirect_node, ip6_indirect)
+VLIB_NODE_FUNCTION_MULTIARCH (ip6_load_balance_node, ip6_load_balance);
-typedef struct {
+typedef struct
+{
/* Adjacency taken. */
u32 adj_index;
u32 flow_hash;
u32 fib_index;
/* Packet data, possibly *after* rewrite. */
- u8 packet_data[128 - 1*sizeof(u32)];
-} ip6_forward_next_trace_t;
+ u8 packet_data[128 - 1 * sizeof (u32)];
+}
+ip6_forward_next_trace_t;
-static u8 * format_ip6_forward_next_trace (u8 * s, va_list * args)
+static u8 *
+format_ip6_forward_next_trace (u8 * s, va_list * args)
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
- ip6_forward_next_trace_t * t = va_arg (*args, ip6_forward_next_trace_t *);
+ ip6_forward_next_trace_t *t = va_arg (*args, ip6_forward_next_trace_t *);
uword indent = format_get_indent (s);
- s = format(s, "%U%U",
- format_white_space, indent,
- format_ip6_header, t->packet_data);
+ s = format (s, "%U%U",
+ format_white_space, indent,
+ format_ip6_header, t->packet_data, sizeof (t->packet_data));
return s;
}
-static u8 * format_ip6_lookup_trace (u8 * s, va_list * args)
+static u8 *
+format_ip6_lookup_trace (u8 * s, va_list * args)
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
- ip6_forward_next_trace_t * t = va_arg (*args, ip6_forward_next_trace_t *);
- vnet_main_t * vnm = vnet_get_main();
- ip6_main_t * im = &ip6_main;
+ ip6_forward_next_trace_t *t = va_arg (*args, ip6_forward_next_trace_t *);
uword indent = format_get_indent (s);
- s = format (s, "fib %d adj-idx %d : %U flow hash: 0x%08x",
- t->fib_index, t->adj_index, format_ip_adjacency,
- vnm, &im->lookup_main, t->adj_index, t->flow_hash);
- s = format(s, "\n%U%U",
- format_white_space, indent,
- format_ip6_header, t->packet_data);
+ s = format (s, "fib %d dpo-idx %d flow hash: 0x%08x",
+ t->fib_index, t->adj_index, t->flow_hash);
+ s = format (s, "\n%U%U",
+ format_white_space, indent,
+ format_ip6_header, t->packet_data, sizeof (t->packet_data));
return s;
}
-static u8 * format_ip6_rewrite_trace (u8 * s, va_list * args)
+static u8 *
+format_ip6_rewrite_trace (u8 * s, va_list * args)
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
- ip6_forward_next_trace_t * t = va_arg (*args, ip6_forward_next_trace_t *);
- vnet_main_t * vnm = vnet_get_main();
- ip6_main_t * im = &ip6_main;
+ ip6_forward_next_trace_t *t = va_arg (*args, ip6_forward_next_trace_t *);
+ vnet_main_t *vnm = vnet_get_main ();
uword indent = format_get_indent (s);
s = format (s, "tx_sw_if_index %d adj-idx %d : %U flow hash: 0x%08x",
- t->fib_index, t->adj_index, format_ip_adjacency,
- vnm, &im->lookup_main, t->adj_index, t->flow_hash);
+ t->fib_index, t->adj_index, format_ip_adjacency,
+ t->adj_index, FORMAT_IP_ADJACENCY_NONE, t->flow_hash);
s = format (s, "\n%U%U",
- format_white_space, indent,
- format_ip_adjacency_packet_data,
- vnm, &im->lookup_main, t->adj_index,
- t->packet_data, sizeof (t->packet_data));
+ format_white_space, indent,
+ format_ip_adjacency_packet_data,
+ vnm, t->adj_index, t->packet_data, sizeof (t->packet_data));
return s;
}
void
ip6_forward_next_trace (vlib_main_t * vm,
vlib_node_runtime_t * node,
- vlib_frame_t * frame,
- vlib_rx_or_tx_t which_adj_index)
+ vlib_frame_t * frame, vlib_rx_or_tx_t which_adj_index)
{
- u32 * from, n_left;
- ip6_main_t * im = &ip6_main;
+ u32 *from, n_left;
+ ip6_main_t *im = &ip6_main;
n_left = frame->n_vectors;
from = vlib_frame_vector_args (frame);
while (n_left >= 4)
{
u32 bi0, bi1;
- vlib_buffer_t * b0, * b1;
- ip6_forward_next_trace_t * t0, * t1;
+ vlib_buffer_t *b0, *b1;
+ ip6_forward_next_trace_t *t0, *t1;
/* Prefetch next iteration. */
vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
{
t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
t0->adj_index = vnet_buffer (b0)->ip.adj_index[which_adj_index];
- t0->flow_hash = vnet_buffer (b0)->ip.flow_hash;
- t0->fib_index = (vnet_buffer(b0)->sw_if_index[VLIB_TX] != (u32)~0) ?
- vnet_buffer(b0)->sw_if_index[VLIB_TX] :
- vec_elt (im->fib_index_by_sw_if_index,
- vnet_buffer(b0)->sw_if_index[VLIB_RX]);
+ t0->flow_hash = vnet_buffer (b0)->ip.flow_hash;
+ t0->fib_index =
+ (vnet_buffer (b0)->sw_if_index[VLIB_TX] !=
+ (u32) ~ 0) ? vnet_buffer (b0)->sw_if_index[VLIB_TX] :
+ vec_elt (im->fib_index_by_sw_if_index,
+ vnet_buffer (b0)->sw_if_index[VLIB_RX]);
clib_memcpy (t0->packet_data,
- vlib_buffer_get_current (b0),
- sizeof (t0->packet_data));
+ vlib_buffer_get_current (b0),
+ sizeof (t0->packet_data));
}
if (b1->flags & VLIB_BUFFER_IS_TRACED)
{
t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0]));
t1->adj_index = vnet_buffer (b1)->ip.adj_index[which_adj_index];
- t1->flow_hash = vnet_buffer (b1)->ip.flow_hash;
- t1->fib_index = (vnet_buffer(b1)->sw_if_index[VLIB_TX] != (u32)~0) ?
- vnet_buffer(b1)->sw_if_index[VLIB_TX] :
- vec_elt (im->fib_index_by_sw_if_index,
- vnet_buffer(b1)->sw_if_index[VLIB_RX]);
+ t1->flow_hash = vnet_buffer (b1)->ip.flow_hash;
+ t1->fib_index =
+ (vnet_buffer (b1)->sw_if_index[VLIB_TX] !=
+ (u32) ~ 0) ? vnet_buffer (b1)->sw_if_index[VLIB_TX] :
+ vec_elt (im->fib_index_by_sw_if_index,
+ vnet_buffer (b1)->sw_if_index[VLIB_RX]);
clib_memcpy (t1->packet_data,
- vlib_buffer_get_current (b1),
- sizeof (t1->packet_data));
+ vlib_buffer_get_current (b1),
+ sizeof (t1->packet_data));
}
from += 2;
n_left -= 2;
while (n_left >= 1)
{
u32 bi0;
- vlib_buffer_t * b0;
- ip6_forward_next_trace_t * t0;
+ vlib_buffer_t *b0;
+ ip6_forward_next_trace_t *t0;
bi0 = from[0];
{
t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
t0->adj_index = vnet_buffer (b0)->ip.adj_index[which_adj_index];
- t0->flow_hash = vnet_buffer (b0)->ip.flow_hash;
- t0->fib_index = (vnet_buffer(b0)->sw_if_index[VLIB_TX] != (u32)~0) ?
- vnet_buffer(b0)->sw_if_index[VLIB_TX] :
- vec_elt (im->fib_index_by_sw_if_index,
- vnet_buffer(b0)->sw_if_index[VLIB_RX]);
+ t0->flow_hash = vnet_buffer (b0)->ip.flow_hash;
+ t0->fib_index =
+ (vnet_buffer (b0)->sw_if_index[VLIB_TX] !=
+ (u32) ~ 0) ? vnet_buffer (b0)->sw_if_index[VLIB_TX] :
+ vec_elt (im->fib_index_by_sw_if_index,
+ vnet_buffer (b0)->sw_if_index[VLIB_RX]);
clib_memcpy (t0->packet_data,
- vlib_buffer_get_current (b0),
- sizeof (t0->packet_data));
+ vlib_buffer_get_current (b0),
+ sizeof (t0->packet_data));
}
from += 1;
n_left -= 1;
static uword
ip6_drop_or_punt (vlib_main_t * vm,
vlib_node_runtime_t * node,
- vlib_frame_t * frame,
- ip6_error_t error_code)
+ vlib_frame_t * frame, ip6_error_t error_code)
{
- u32 * buffers = vlib_frame_vector_args (frame);
+ u32 *buffers = vlib_frame_vector_args (frame);
uword n_packets = frame->n_vectors;
- vlib_error_drop_buffers (vm, node,
- buffers,
+ vlib_error_drop_buffers (vm, node, buffers,
/* stride */ 1,
n_packets,
/* next */ 0,
- ip6_input_node.index,
- error_code);
+ ip6_input_node.index, error_code);
if (node->flags & VLIB_NODE_FLAG_TRACE)
ip6_forward_next_trace (vm, node, frame, VLIB_TX);
}
static uword
-ip6_drop (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{ return ip6_drop_or_punt (vm, node, frame, IP6_ERROR_ADJACENCY_DROP); }
-
-static uword
-ip6_punt (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{ return ip6_drop_or_punt (vm, node, frame, IP6_ERROR_ADJACENCY_PUNT); }
+ip6_drop (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return ip6_drop_or_punt (vm, node, frame, IP6_ERROR_ADJACENCY_DROP);
+}
static uword
-ip6_miss (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{ return ip6_drop_or_punt (vm, node, frame, IP6_ERROR_DST_LOOKUP_MISS); }
+ip6_punt (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return ip6_drop_or_punt (vm, node, frame, IP6_ERROR_ADJACENCY_PUNT);
+}
-VLIB_REGISTER_NODE (ip6_drop_node,static) = {
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ip6_drop_node, static) =
+{
.function = ip6_drop,
.name = "ip6-drop",
.vector_size = sizeof (u32),
-
.format_trace = format_ip6_forward_next_trace,
-
.n_next_nodes = 1,
- .next_nodes = {
- [0] = "error-drop",
- },
+ .next_nodes =
+ {
+ [0] = "error-drop",},
};
+/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (ip6_drop_node, ip6_drop)
+VLIB_NODE_FUNCTION_MULTIARCH (ip6_drop_node, ip6_drop);
-VLIB_REGISTER_NODE (ip6_punt_node,static) = {
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ip6_punt_node, static) =
+{
.function = ip6_punt,
.name = "ip6-punt",
.vector_size = sizeof (u32),
-
- .format_trace = format_ip6_forward_next_trace,
-
- .n_next_nodes = 1,
- .next_nodes = {
- [0] = "error-punt",
- },
-};
-
-VLIB_NODE_FUNCTION_MULTIARCH (ip6_punt_node, ip6_punt)
-
-VLIB_REGISTER_NODE (ip6_miss_node,static) = {
- .function = ip6_miss,
- .name = "ip6-miss",
- .vector_size = sizeof (u32),
-
.format_trace = format_ip6_forward_next_trace,
-
.n_next_nodes = 1,
- .next_nodes = {
- [0] = "error-drop",
- },
+ .next_nodes =
+ {
+ [0] = "error-punt",},
};
+/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (ip6_miss_node, ip6_miss)
+VLIB_NODE_FUNCTION_MULTIARCH (ip6_punt_node, ip6_punt);
-VLIB_REGISTER_NODE (ip6_multicast_node,static) = {
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ip6_multicast_node, static) =
+{
.function = ip6_drop,
.name = "ip6-multicast",
.vector_size = sizeof (u32),
-
.format_trace = format_ip6_forward_next_trace,
-
.n_next_nodes = 1,
- .next_nodes = {
+ .next_nodes =
+ {
[0] = "error-drop",
},
};
+/* *INDENT-ON* */
+
/* Compute TCP/UDP/ICMP6 checksum in software. */
-u16 ip6_tcp_udp_icmp_compute_checksum (vlib_main_t * vm, vlib_buffer_t * p0, ip6_header_t * ip0, int *bogus_lengthp)
+u16
+ip6_tcp_udp_icmp_compute_checksum (vlib_main_t * vm, vlib_buffer_t * p0,
+ ip6_header_t * ip0, int *bogus_lengthp)
{
ip_csum_t sum0;
u16 sum16, payload_length_host_byte_order;
u32 i, n_this_buffer, n_bytes_left;
- u32 headers_size = sizeof(ip0[0]);
- void * data_this_buffer;
+ u32 headers_size = sizeof (ip0[0]);
+ void *data_this_buffer;
- ASSERT(bogus_lengthp);
+ ASSERT (bogus_lengthp);
*bogus_lengthp = 0;
/* Initialize checksum with ip header. */
sum0 = ip0->payload_length + clib_host_to_net_u16 (ip0->protocol);
payload_length_host_byte_order = clib_net_to_host_u16 (ip0->payload_length);
data_this_buffer = (void *) (ip0 + 1);
-
+
for (i = 0; i < ARRAY_LEN (ip0->src_address.as_uword); i++)
{
sum0 = ip_csum_with_carry (sum0,
- clib_mem_unaligned (&ip0->src_address.as_uword[i], uword));
- sum0 = ip_csum_with_carry (sum0,
- clib_mem_unaligned (&ip0->dst_address.as_uword[i], uword));
+ clib_mem_unaligned (&ip0->
+ src_address.as_uword[i],
+ uword));
+ sum0 =
+ ip_csum_with_carry (sum0,
+ clib_mem_unaligned (&ip0->dst_address.as_uword[i],
+ uword));
}
/* some icmp packets may come with a "router alert" hop-by-hop extension header (e.g., mldv2 packets) */
- if (PREDICT_FALSE (ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS))
+ if (PREDICT_FALSE (ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS))
{
- u32 skip_bytes;
- ip6_hop_by_hop_ext_t *ext_hdr = (ip6_hop_by_hop_ext_t *)data_this_buffer;
+ u32 skip_bytes;
+ ip6_hop_by_hop_ext_t *ext_hdr =
+ (ip6_hop_by_hop_ext_t *) data_this_buffer;
/* validate really icmp6 next */
- ASSERT(ext_hdr->next_hdr == IP_PROTOCOL_ICMP6);
+ ASSERT (ext_hdr->next_hdr == IP_PROTOCOL_ICMP6);
+
+ skip_bytes = 8 * (1 + ext_hdr->n_data_u64s);
+ data_this_buffer = (void *) ((u8 *) data_this_buffer + skip_bytes);
- skip_bytes = 8* (1 + ext_hdr->n_data_u64s);
- data_this_buffer = (void *)((u8 *)data_this_buffer + skip_bytes);
-
- payload_length_host_byte_order -= skip_bytes;
+ payload_length_host_byte_order -= skip_bytes;
headers_size += skip_bytes;
- }
+ }
n_bytes_left = n_this_buffer = payload_length_host_byte_order;
-#if DPDK > 0
- if (p0 && n_this_buffer + headers_size > p0->current_length)
- {
- struct rte_mbuf *mb = rte_mbuf_from_vlib_buffer(p0);
- u8 nb_segs = mb->nb_segs;
-
- n_this_buffer = (p0->current_length > headers_size ?
- p0->current_length - headers_size : 0);
- while (n_bytes_left)
- {
- sum0 = ip_incremental_checksum (sum0, data_this_buffer, n_this_buffer);
- n_bytes_left -= n_this_buffer;
-
- mb = mb->next;
- nb_segs--;
- if ((nb_segs == 0) || (mb == 0))
- break;
-
- data_this_buffer = rte_ctrlmbuf_data(mb);
- n_this_buffer = mb->data_len;
- }
- if (n_bytes_left || nb_segs)
- {
- *bogus_lengthp = 1;
- return 0xfefe;
- }
- }
- else sum0 = ip_incremental_checksum (sum0, data_this_buffer, n_this_buffer);
-#else
- if (p0 && n_this_buffer + headers_size > p0->current_length)
- n_this_buffer = p0->current_length > headers_size ? p0->current_length - headers_size : 0;
+ if (p0 && n_this_buffer + headers_size > p0->current_length)
+ n_this_buffer =
+ p0->current_length >
+ headers_size ? p0->current_length - headers_size : 0;
while (1)
{
sum0 = ip_incremental_checksum (sum0, data_this_buffer, n_this_buffer);
break;
if (!(p0->flags & VLIB_BUFFER_NEXT_PRESENT))
- {
- *bogus_lengthp = 1;
- return 0xfefe;
- }
+ {
+ *bogus_lengthp = 1;
+ return 0xfefe;
+ }
p0 = vlib_get_buffer (vm, p0->next_buffer);
data_this_buffer = vlib_buffer_get_current (p0);
n_this_buffer = p0->current_length;
}
-#endif /* DPDK */
- sum16 = ~ ip_csum_fold (sum0);
+ sum16 = ~ip_csum_fold (sum0);
return sum16;
}
-u32 ip6_tcp_udp_icmp_validate_checksum (vlib_main_t * vm, vlib_buffer_t * p0)
+u32
+ip6_tcp_udp_icmp_validate_checksum (vlib_main_t * vm, vlib_buffer_t * p0)
{
- ip6_header_t * ip0 = vlib_buffer_get_current (p0);
- udp_header_t * udp0;
+ ip6_header_t *ip0 = vlib_buffer_get_current (p0);
+ udp_header_t *udp0;
u16 sum16;
int bogus_length;
ASSERT (ip0->protocol == IP_PROTOCOL_TCP
|| ip0->protocol == IP_PROTOCOL_ICMP6
|| ip0->protocol == IP_PROTOCOL_UDP
- || ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS);
+ || ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS);
udp0 = (void *) (ip0 + 1);
if (ip0->protocol == IP_PROTOCOL_UDP && udp0->checksum == 0)
return p0->flags;
}
+/* ip6_locate_header
+ *
+ * This function is to search for the header specified by the find_hdr number.
+ * 1. If the find_hdr < 0 then it finds and returns the protocol number and
+ * offset stored in *offset of the transport or ESP header in the chain if
+ * found.
+ * 2. If a header with find_hdr > 0 protocol number is found then the
+ * offset is stored in *offset and protocol number of the header is
+ * returned.
+ * 3. If find_hdr header is not found or packet is malformed or
+ * it is a non-first fragment -1 is returned.
+ */
+always_inline int
+ip6_locate_header (vlib_buffer_t * p0,
+ ip6_header_t * ip0, int find_hdr, u32 * offset)
+{
+ u8 next_proto = ip0->protocol;
+ u8 *next_header;
+ u8 done = 0;
+ u32 cur_offset;
+ u8 *temp_nxthdr = 0;
+ u32 exthdr_len = 0;
+
+ next_header = ip6_next_header (ip0);
+ cur_offset = sizeof (ip6_header_t);
+ while (1)
+ {
+ done = (next_proto == find_hdr);
+ if (PREDICT_FALSE
+ (next_header >=
+ (u8 *) vlib_buffer_get_current (p0) + p0->current_length))
+ {
+ //A malicious packet could set an extension header with a too big size
+ return (-1);
+ }
+ if (done)
+ break;
+ if ((!ip6_ext_hdr (next_proto)) || next_proto == IP_PROTOCOL_IP6_NONXT)
+ {
+ if (find_hdr < 0)
+ break;
+ return -1;
+ }
+ if (next_proto == IP_PROTOCOL_IPV6_FRAGMENTATION)
+ {
+ ip6_frag_hdr_t *frag_hdr = (ip6_frag_hdr_t *) next_header;
+ u16 frag_off = ip6_frag_hdr_offset (frag_hdr);
+ /* Non first fragment return -1 */
+ if (frag_off)
+ return (-1);
+ exthdr_len = sizeof (ip6_frag_hdr_t);
+ temp_nxthdr = next_header + exthdr_len;
+ }
+ else if (next_proto == IP_PROTOCOL_IPSEC_AH)
+ {
+ exthdr_len =
+ ip6_ext_authhdr_len (((ip6_ext_header_t *) next_header));
+ temp_nxthdr = next_header + exthdr_len;
+ }
+ else
+ {
+ exthdr_len =
+ ip6_ext_header_len (((ip6_ext_header_t *) next_header));
+ temp_nxthdr = next_header + exthdr_len;
+ }
+ next_proto = ((ip6_ext_header_t *) next_header)->next_hdr;
+ next_header = temp_nxthdr;
+ cur_offset += exthdr_len;
+ }
+
+ *offset = cur_offset;
+ return (next_proto);
+}
+
static uword
-ip6_local (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+ip6_local (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
{
- ip6_main_t * im = &ip6_main;
- ip_lookup_main_t * lm = &im->lookup_main;
+ ip6_main_t *im = &ip6_main;
+ ip_lookup_main_t *lm = &im->lookup_main;
ip_local_next_t next_index;
- u32 * from, * to_next, n_left_from, n_left_to_next;
- vlib_node_runtime_t * error_node = vlib_node_get_runtime (vm, ip6_input_node.index);
+ u32 *from, *to_next, n_left_from, n_left_to_next;
+ vlib_node_runtime_t *error_node =
+ vlib_node_get_runtime (vm, ip6_input_node.index);
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
next_index = node->cached_next_index;
-
+
if (node->flags & VLIB_NODE_FLAG_TRACE)
ip6_forward_next_trace (vm, node, frame, VLIB_TX);
while (n_left_from > 0)
{
- vlib_get_next_frame (vm, node, next_index,
- to_next, n_left_to_next);
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
while (n_left_from >= 4 && n_left_to_next >= 2)
{
- vlib_buffer_t * p0, * p1;
- ip6_header_t * ip0, * ip1;
- udp_header_t * udp0, * udp1;
+ vlib_buffer_t *p0, *p1;
+ ip6_header_t *ip0, *ip1;
+ udp_header_t *udp0, *udp1;
u32 pi0, ip_len0, udp_len0, flags0, next0;
u32 pi1, ip_len1, udp_len1, flags1, next1;
i32 len_diff0, len_diff1;
u8 error0, type0, good_l4_checksum0;
u8 error1, type1, good_l4_checksum1;
-
+ u32 udp_offset0, udp_offset1;
+
pi0 = to_next[0] = from[0];
pi1 = to_next[1] = from[1];
from += 2;
n_left_from -= 2;
to_next += 2;
n_left_to_next -= 2;
-
+
p0 = vlib_get_buffer (vm, pi0);
p1 = vlib_get_buffer (vm, pi1);
good_l4_checksum0 = (flags0 & IP_BUFFER_L4_CHECKSUM_CORRECT) != 0;
good_l4_checksum1 = (flags1 & IP_BUFFER_L4_CHECKSUM_CORRECT) != 0;
+ len_diff0 = 0;
+ len_diff1 = 0;
- udp0 = ip6_next_header (ip0);
- udp1 = ip6_next_header (ip1);
-
- /* Don't verify UDP checksum for packets with explicit zero checksum. */
- good_l4_checksum0 |= type0 == IP_BUILTIN_PROTOCOL_UDP && udp0->checksum == 0;
- good_l4_checksum1 |= type1 == IP_BUILTIN_PROTOCOL_UDP && udp1->checksum == 0;
+ /* Skip HBH local processing */
+ if (PREDICT_FALSE
+ (ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS))
+ {
+ ip6_hop_by_hop_ext_t *ext_hdr =
+ (ip6_hop_by_hop_ext_t *) ip6_next_header (ip0);
+ next0 = lm->local_next_by_ip_protocol[ext_hdr->next_hdr];
+ type0 = lm->builtin_protocol_by_ip_protocol[ext_hdr->next_hdr];
+ }
+ if (PREDICT_FALSE
+ (ip1->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS))
+ {
+ ip6_hop_by_hop_ext_t *ext_hdr =
+ (ip6_hop_by_hop_ext_t *) ip6_next_header (ip1);
+ next1 = lm->local_next_by_ip_protocol[ext_hdr->next_hdr];
+ type1 = lm->builtin_protocol_by_ip_protocol[ext_hdr->next_hdr];
+ }
+ if (PREDICT_TRUE (IP_PROTOCOL_UDP == ip6_locate_header (p0, ip0,
+ IP_PROTOCOL_UDP,
+ &udp_offset0)))
+ {
+ udp0 = (udp_header_t *) ((u8 *) ip0 + udp_offset0);
+ /* Don't verify UDP checksum for packets with explicit zero checksum. */
+ good_l4_checksum0 |= type0 == IP_BUILTIN_PROTOCOL_UDP
+ && udp0->checksum == 0;
+ /* Verify UDP length. */
+ ip_len0 = clib_net_to_host_u16 (ip0->payload_length);
+ udp_len0 = clib_net_to_host_u16 (udp0->length);
+ len_diff0 = ip_len0 - udp_len0;
+ }
+ if (PREDICT_TRUE (IP_PROTOCOL_UDP == ip6_locate_header (p1, ip1,
+ IP_PROTOCOL_UDP,
+ &udp_offset1)))
+ {
+ udp1 = (udp_header_t *) ((u8 *) ip1 + udp_offset1);
+ /* Don't verify UDP checksum for packets with explicit zero checksum. */
+ good_l4_checksum1 |= type1 == IP_BUILTIN_PROTOCOL_UDP
+ && udp1->checksum == 0;
+ /* Verify UDP length. */
+ ip_len1 = clib_net_to_host_u16 (ip1->payload_length);
+ udp_len1 = clib_net_to_host_u16 (udp1->length);
+ len_diff1 = ip_len1 - udp_len1;
+ }
good_l4_checksum0 |= type0 == IP_BUILTIN_PROTOCOL_UNKNOWN;
good_l4_checksum1 |= type1 == IP_BUILTIN_PROTOCOL_UNKNOWN;
- /* Verify UDP length. */
- ip_len0 = clib_net_to_host_u16 (ip0->payload_length);
- ip_len1 = clib_net_to_host_u16 (ip1->payload_length);
- udp_len0 = clib_net_to_host_u16 (udp0->length);
- udp_len1 = clib_net_to_host_u16 (udp1->length);
-
- len_diff0 = ip_len0 - udp_len0;
- len_diff1 = ip_len1 - udp_len1;
-
len_diff0 = type0 == IP_BUILTIN_PROTOCOL_UDP ? len_diff0 : 0;
len_diff1 = type1 == IP_BUILTIN_PROTOCOL_UDP ? len_diff1 : 0;
if (PREDICT_FALSE (type0 != IP_BUILTIN_PROTOCOL_UNKNOWN
- && ! good_l4_checksum0
- && ! (flags0 & IP_BUFFER_L4_CHECKSUM_COMPUTED)))
+ && !good_l4_checksum0
+ && !(flags0 & IP_BUFFER_L4_CHECKSUM_COMPUTED)))
{
flags0 = ip6_tcp_udp_icmp_validate_checksum (vm, p0);
good_l4_checksum0 =
(flags0 & IP_BUFFER_L4_CHECKSUM_CORRECT) != 0;
}
if (PREDICT_FALSE (type1 != IP_BUILTIN_PROTOCOL_UNKNOWN
- && ! good_l4_checksum1
- && ! (flags1 & IP_BUFFER_L4_CHECKSUM_COMPUTED)))
+ && !good_l4_checksum1
+ && !(flags1 & IP_BUFFER_L4_CHECKSUM_COMPUTED)))
{
flags1 = ip6_tcp_udp_icmp_validate_checksum (vm, p1);
good_l4_checksum1 =
error0 = len_diff0 < 0 ? IP6_ERROR_UDP_LENGTH : error0;
error1 = len_diff1 < 0 ? IP6_ERROR_UDP_LENGTH : error1;
- ASSERT (IP6_ERROR_UDP_CHECKSUM + IP_BUILTIN_PROTOCOL_UDP == IP6_ERROR_UDP_CHECKSUM);
- ASSERT (IP6_ERROR_UDP_CHECKSUM + IP_BUILTIN_PROTOCOL_ICMP == IP6_ERROR_ICMP_CHECKSUM);
- error0 = (! good_l4_checksum0
- ? IP6_ERROR_UDP_CHECKSUM + type0
- : error0);
- error1 = (! good_l4_checksum1
- ? IP6_ERROR_UDP_CHECKSUM + type1
- : error1);
+ ASSERT (IP6_ERROR_UDP_CHECKSUM + IP_BUILTIN_PROTOCOL_UDP ==
+ IP6_ERROR_UDP_CHECKSUM);
+ ASSERT (IP6_ERROR_UDP_CHECKSUM + IP_BUILTIN_PROTOCOL_ICMP ==
+ IP6_ERROR_ICMP_CHECKSUM);
+ error0 =
+ (!good_l4_checksum0 ? IP6_ERROR_UDP_CHECKSUM + type0 : error0);
+ error1 =
+ (!good_l4_checksum1 ? IP6_ERROR_UDP_CHECKSUM + type1 : error1);
/* Drop packets from unroutable hosts. */
- /* If this is a neighbor solicitation (ICMP), skip source RPF check */
- if (error0 == IP6_ERROR_UNKNOWN_PROTOCOL && type0 != IP_BUILTIN_PROTOCOL_ICMP)
+ /* If this is a neighbor solicitation (ICMP), skip source RPF check */
+ if (error0 == IP6_ERROR_UNKNOWN_PROTOCOL &&
+ type0 != IP_BUILTIN_PROTOCOL_ICMP &&
+ !ip6_address_is_link_local_unicast (&ip0->src_address))
{
u32 src_adj_index0 = ip6_src_lookup_for_packet (im, p0, ip0);
- error0 = (lm->miss_adj_index == src_adj_index0
- ? IP6_ERROR_SRC_LOOKUP_MISS
- : error0);
+ error0 = (ADJ_INDEX_INVALID == src_adj_index0
+ ? IP6_ERROR_SRC_LOOKUP_MISS : error0);
}
- if (error1 == IP6_ERROR_UNKNOWN_PROTOCOL && type1 != IP_BUILTIN_PROTOCOL_ICMP)
+ if (error1 == IP6_ERROR_UNKNOWN_PROTOCOL &&
+ type1 != IP_BUILTIN_PROTOCOL_ICMP &&
+ !ip6_address_is_link_local_unicast (&ip1->src_address))
{
u32 src_adj_index1 = ip6_src_lookup_for_packet (im, p1, ip1);
- error1 = (lm->miss_adj_index == src_adj_index1
- ? IP6_ERROR_SRC_LOOKUP_MISS
- : error1);
+ error1 = (ADJ_INDEX_INVALID == src_adj_index1
+ ? IP6_ERROR_SRC_LOOKUP_MISS : error1);
}
- next0 = error0 != IP6_ERROR_UNKNOWN_PROTOCOL ? IP_LOCAL_NEXT_DROP : next0;
- next1 = error1 != IP6_ERROR_UNKNOWN_PROTOCOL ? IP_LOCAL_NEXT_DROP : next1;
+ next0 =
+ error0 != IP6_ERROR_UNKNOWN_PROTOCOL ? IP_LOCAL_NEXT_DROP : next0;
+ next1 =
+ error1 != IP6_ERROR_UNKNOWN_PROTOCOL ? IP_LOCAL_NEXT_DROP : next1;
p0->error = error_node->errors[error0];
p1->error = error_node->errors[error1];
while (n_left_from > 0 && n_left_to_next > 0)
{
- vlib_buffer_t * p0;
- ip6_header_t * ip0;
- udp_header_t * udp0;
+ vlib_buffer_t *p0;
+ ip6_header_t *ip0;
+ udp_header_t *udp0;
u32 pi0, ip_len0, udp_len0, flags0, next0;
i32 len_diff0;
u8 error0, type0, good_l4_checksum0;
-
+ u32 udp_offset0;
+
pi0 = to_next[0] = from[0];
from += 1;
n_left_from -= 1;
to_next += 1;
n_left_to_next -= 1;
-
+
p0 = vlib_get_buffer (vm, pi0);
ip0 = vlib_buffer_get_current (p0);
flags0 = p0->flags;
good_l4_checksum0 = (flags0 & IP_BUFFER_L4_CHECKSUM_CORRECT) != 0;
+ len_diff0 = 0;
- udp0 = ip6_next_header (ip0);
-
- /* Don't verify UDP checksum for packets with explicit zero checksum. */
- good_l4_checksum0 |= type0 == IP_BUILTIN_PROTOCOL_UDP && udp0->checksum == 0;
+ /* Skip HBH local processing */
+ if (PREDICT_FALSE
+ (ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS))
+ {
+ ip6_hop_by_hop_ext_t *ext_hdr =
+ (ip6_hop_by_hop_ext_t *) ip6_next_header (ip0);
+ next0 = lm->local_next_by_ip_protocol[ext_hdr->next_hdr];
+ type0 = lm->builtin_protocol_by_ip_protocol[ext_hdr->next_hdr];
+ }
+ if (PREDICT_TRUE (IP_PROTOCOL_UDP == ip6_locate_header (p0, ip0,
+ IP_PROTOCOL_UDP,
+ &udp_offset0)))
+ {
+ udp0 = (udp_header_t *) ((u8 *) ip0 + udp_offset0);
+ /* Don't verify UDP checksum for packets with explicit zero checksum. */
+ good_l4_checksum0 |= type0 == IP_BUILTIN_PROTOCOL_UDP
+ && udp0->checksum == 0;
+ /* Verify UDP length. */
+ ip_len0 = clib_net_to_host_u16 (ip0->payload_length);
+ udp_len0 = clib_net_to_host_u16 (udp0->length);
+ len_diff0 = ip_len0 - udp_len0;
+ }
good_l4_checksum0 |= type0 == IP_BUILTIN_PROTOCOL_UNKNOWN;
-
- /* Verify UDP length. */
- ip_len0 = clib_net_to_host_u16 (ip0->payload_length);
- udp_len0 = clib_net_to_host_u16 (udp0->length);
-
- len_diff0 = ip_len0 - udp_len0;
-
len_diff0 = type0 == IP_BUILTIN_PROTOCOL_UDP ? len_diff0 : 0;
if (PREDICT_FALSE (type0 != IP_BUILTIN_PROTOCOL_UNKNOWN
- && ! good_l4_checksum0
- && ! (flags0 & IP_BUFFER_L4_CHECKSUM_COMPUTED)))
+ && !good_l4_checksum0
+ && !(flags0 & IP_BUFFER_L4_CHECKSUM_COMPUTED)))
{
flags0 = ip6_tcp_udp_icmp_validate_checksum (vm, p0);
good_l4_checksum0 =
error0 = len_diff0 < 0 ? IP6_ERROR_UDP_LENGTH : error0;
- ASSERT (IP6_ERROR_UDP_CHECKSUM + IP_BUILTIN_PROTOCOL_UDP == IP6_ERROR_UDP_CHECKSUM);
- ASSERT (IP6_ERROR_UDP_CHECKSUM + IP_BUILTIN_PROTOCOL_ICMP == IP6_ERROR_ICMP_CHECKSUM);
- error0 = (! good_l4_checksum0
- ? IP6_ERROR_UDP_CHECKSUM + type0
- : error0);
-
- /* If this is a neighbor solicitation (ICMP), skip source RPF check */
- if (error0 == IP6_ERROR_UNKNOWN_PROTOCOL && type0 != IP_BUILTIN_PROTOCOL_ICMP)
+ ASSERT (IP6_ERROR_UDP_CHECKSUM + IP_BUILTIN_PROTOCOL_UDP ==
+ IP6_ERROR_UDP_CHECKSUM);
+ ASSERT (IP6_ERROR_UDP_CHECKSUM + IP_BUILTIN_PROTOCOL_ICMP ==
+ IP6_ERROR_ICMP_CHECKSUM);
+ error0 =
+ (!good_l4_checksum0 ? IP6_ERROR_UDP_CHECKSUM + type0 : error0);
+
+ /* If this is a neighbor solicitation (ICMP), skip source RPF check */
+ if (error0 == IP6_ERROR_UNKNOWN_PROTOCOL &&
+ type0 != IP_BUILTIN_PROTOCOL_ICMP &&
+ !ip6_address_is_link_local_unicast (&ip0->src_address))
{
u32 src_adj_index0 = ip6_src_lookup_for_packet (im, p0, ip0);
- error0 = (lm->miss_adj_index == src_adj_index0
- ? IP6_ERROR_SRC_LOOKUP_MISS
- : error0);
+ error0 = (ADJ_INDEX_INVALID == src_adj_index0
+ ? IP6_ERROR_SRC_LOOKUP_MISS : error0);
}
- next0 = error0 != IP6_ERROR_UNKNOWN_PROTOCOL ? IP_LOCAL_NEXT_DROP : next0;
+ next0 =
+ error0 != IP6_ERROR_UNKNOWN_PROTOCOL ? IP_LOCAL_NEXT_DROP : next0;
p0->error = error_node->errors[error0];
to_next, n_left_to_next,
pi0, next0);
}
-
+
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
return frame->n_vectors;
}
-VLIB_REGISTER_NODE (ip6_local_node,static) = {
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ip6_local_node, static) =
+{
.function = ip6_local,
.name = "ip6-local",
.vector_size = sizeof (u32),
-
.format_trace = format_ip6_forward_next_trace,
-
.n_next_nodes = IP_LOCAL_N_NEXT,
- .next_nodes = {
+ .next_nodes =
+ {
[IP_LOCAL_NEXT_DROP] = "error-drop",
[IP_LOCAL_NEXT_PUNT] = "error-punt",
[IP_LOCAL_NEXT_UDP_LOOKUP] = "ip6-udp-lookup",
[IP_LOCAL_NEXT_ICMP] = "ip6-icmp-input",
},
};
+/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (ip6_local_node, ip6_local)
+VLIB_NODE_FUNCTION_MULTIARCH (ip6_local_node, ip6_local);
-void ip6_register_protocol (u32 protocol, u32 node_index)
+void
+ip6_register_protocol (u32 protocol, u32 node_index)
{
- vlib_main_t * vm = vlib_get_main();
- ip6_main_t * im = &ip6_main;
- ip_lookup_main_t * lm = &im->lookup_main;
+ vlib_main_t *vm = vlib_get_main ();
+ ip6_main_t *im = &ip6_main;
+ ip_lookup_main_t *lm = &im->lookup_main;
ASSERT (protocol < ARRAY_LEN (lm->local_next_by_ip_protocol));
- lm->local_next_by_ip_protocol[protocol] = vlib_node_add_next (vm, ip6_local_node.index, node_index);
+ lm->local_next_by_ip_protocol[protocol] =
+ vlib_node_add_next (vm, ip6_local_node.index, node_index);
}
-typedef enum {
+typedef enum
+{
IP6_DISCOVER_NEIGHBOR_NEXT_DROP,
IP6_DISCOVER_NEIGHBOR_NEXT_REPLY_TX,
IP6_DISCOVER_NEIGHBOR_N_NEXT,
} ip6_discover_neighbor_next_t;
-typedef enum {
+typedef enum
+{
IP6_DISCOVER_NEIGHBOR_ERROR_DROP,
IP6_DISCOVER_NEIGHBOR_ERROR_REQUEST_SENT,
IP6_DISCOVER_NEIGHBOR_ERROR_NO_SOURCE_ADDRESS,
} ip6_discover_neighbor_error_t;
static uword
-ip6_discover_neighbor (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+ip6_discover_neighbor_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame, int is_glean)
{
- vnet_main_t * vnm = vnet_get_main();
- ip6_main_t * im = &ip6_main;
- ip_lookup_main_t * lm = &im->lookup_main;
- u32 * from, * to_next_drop;
+ vnet_main_t *vnm = vnet_get_main ();
+ ip6_main_t *im = &ip6_main;
+ ip_lookup_main_t *lm = &im->lookup_main;
+ u32 *from, *to_next_drop;
uword n_left_from, n_left_to_next_drop;
static f64 time_last_seed_change = -1e100;
static u32 hash_seeds[3];
- static uword hash_bitmap[256 / BITS (uword)];
+ static uword hash_bitmap[256 / BITS (uword)];
f64 time_now;
int bogus_length;
if (time_now - time_last_seed_change > 1e-3)
{
uword i;
- u32 * r = clib_random_buffer_get_data (&vm->random_buffer,
- sizeof (hash_seeds));
+ u32 *r = clib_random_buffer_get_data (&vm->random_buffer,
+ sizeof (hash_seeds));
for (i = 0; i < ARRAY_LEN (hash_seeds); i++)
hash_seeds[i] = r[i];
while (n_left_from > 0 && n_left_to_next_drop > 0)
{
- vlib_buffer_t * p0;
- ip6_header_t * ip0;
+ vlib_buffer_t *p0;
+ ip6_header_t *ip0;
u32 pi0, adj_index0, a0, b0, c0, m0, sw_if_index0, drop0;
uword bm0;
- ip_adjacency_t * adj0;
- vnet_hw_interface_t * hw_if0;
+ ip_adjacency_t *adj0;
+ vnet_hw_interface_t *hw_if0;
u32 next0;
pi0 = from[0];
adj0 = ip_get_adjacency (lm, adj_index0);
- if (adj0->arp.next_hop.ip6.as_u64[0] ||
- adj0->arp.next_hop.ip6.as_u64[1]) {
- ip0->dst_address.as_u64[0] = adj0->arp.next_hop.ip6.as_u64[0];
- ip0->dst_address.as_u64[1] = adj0->arp.next_hop.ip6.as_u64[1];
- }
+ if (!is_glean)
+ {
+ ip0->dst_address.as_u64[0] =
+ adj0->sub_type.nbr.next_hop.ip6.as_u64[0];
+ ip0->dst_address.as_u64[1] =
+ adj0->sub_type.nbr.next_hop.ip6.as_u64[1];
+ }
a0 = hash_seeds[0];
b0 = hash_seeds[1];
to_next_drop += 1;
n_left_to_next_drop -= 1;
- hw_if0 = vnet_get_sup_hw_interface (vnm, sw_if_index0);
+ hw_if0 = vnet_get_sup_hw_interface (vnm, sw_if_index0);
- /* If the interface is link-down, drop the pkt */
- if (!(hw_if0->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
- drop0 = 1;
+ /* If the interface is link-down, drop the pkt */
+ if (!(hw_if0->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
+ drop0 = 1;
- p0->error =
- node->errors[drop0 ? IP6_DISCOVER_NEIGHBOR_ERROR_DROP
- : IP6_DISCOVER_NEIGHBOR_ERROR_REQUEST_SENT];
+ p0->error =
+ node->errors[drop0 ? IP6_DISCOVER_NEIGHBOR_ERROR_DROP
+ : IP6_DISCOVER_NEIGHBOR_ERROR_REQUEST_SENT];
if (drop0)
continue;
+ /*
+ * the adj has been updated to a rewrite but the node the DPO that got
+ * us here hasn't - yet. no big deal. we'll drop while we wait.
+ */
+ if (IP_LOOKUP_NEXT_REWRITE == adj0->lookup_next_index)
+ continue;
+
{
u32 bi0 = 0;
- icmp6_neighbor_solicitation_header_t * h0;
- vlib_buffer_t * b0;
-
- h0 = vlib_packet_template_get_packet
- (vm, &im->discover_neighbor_packet_template, &bi0);
-
- /*
- * Build ethernet header.
- * Choose source address based on destination lookup
- * adjacency.
- */
- if (ip6_src_address_for_packet (im, p0, &h0->ip.src_address,
- sw_if_index0)) {
- //There is no address on the interface
- p0->error = node->errors[IP6_DISCOVER_NEIGHBOR_ERROR_NO_SOURCE_ADDRESS];
- vlib_buffer_free(vm, &bi0, 1);
+ icmp6_neighbor_solicitation_header_t *h0;
+ vlib_buffer_t *b0;
+
+ h0 = vlib_packet_template_get_packet
+ (vm, &im->discover_neighbor_packet_template, &bi0);
+
+ /*
+ * Build ethernet header.
+ * Choose source address based on destination lookup
+ * adjacency.
+ */
+ if (ip6_src_address_for_packet (lm,
+ sw_if_index0,
+ &h0->ip.src_address))
+ {
+ /* There is no address on the interface */
+ p0->error =
+ node->errors[IP6_DISCOVER_NEIGHBOR_ERROR_NO_SOURCE_ADDRESS];
+ vlib_buffer_free (vm, &bi0, 1);
continue;
- }
+ }
- /*
- * Destination address is a solicited node multicast address.
- * We need to fill in
- * the low 24 bits with low 24 bits of target's address.
- */
+ /*
+ * Destination address is a solicited node multicast address.
+ * We need to fill in
+ * the low 24 bits with low 24 bits of target's address.
+ */
h0->ip.dst_address.as_u8[13] = ip0->dst_address.as_u8[13];
h0->ip.dst_address.as_u8[14] = ip0->dst_address.as_u8[14];
h0->ip.dst_address.as_u8[15] = ip0->dst_address.as_u8[15];
h0->neighbor.target_address = ip0->dst_address;
- clib_memcpy (h0->link_layer_option.ethernet_address,
- hw_if0->hw_address, vec_len (hw_if0->hw_address));
+ clib_memcpy (h0->link_layer_option.ethernet_address,
+ hw_if0->hw_address, vec_len (hw_if0->hw_address));
- /* $$$$ appears we need this; why is the checksum non-zero? */
- h0->neighbor.icmp.checksum = 0;
- h0->neighbor.icmp.checksum =
- ip6_tcp_udp_icmp_compute_checksum (vm, 0, &h0->ip,
- &bogus_length);
+ /* $$$$ appears we need this; why is the checksum non-zero? */
+ h0->neighbor.icmp.checksum = 0;
+ h0->neighbor.icmp.checksum =
+ ip6_tcp_udp_icmp_compute_checksum (vm, 0, &h0->ip,
+ &bogus_length);
- ASSERT (bogus_length == 0);
+ ASSERT (bogus_length == 0);
vlib_buffer_copy_trace_flag (vm, p0, bi0);
b0 = vlib_get_buffer (vm, bi0);
- vnet_buffer (b0)->sw_if_index[VLIB_TX]
- = vnet_buffer (p0)->sw_if_index[VLIB_TX];
+ vnet_buffer (b0)->sw_if_index[VLIB_TX]
+ = vnet_buffer (p0)->sw_if_index[VLIB_TX];
/* Add rewrite/encap string. */
- vnet_rewrite_one_header (adj0[0], h0,
- sizeof (ethernet_header_t));
+ vnet_rewrite_one_header (adj0[0], h0, sizeof (ethernet_header_t));
vlib_buffer_advance (b0, -adj0->rewrite_header.data_bytes);
next0 = IP6_DISCOVER_NEIGHBOR_NEXT_REPLY_TX;
}
}
- vlib_put_next_frame (vm, node, IP6_DISCOVER_NEIGHBOR_NEXT_DROP,
- n_left_to_next_drop);
+ vlib_put_next_frame (vm, node, IP6_DISCOVER_NEIGHBOR_NEXT_DROP,
+ n_left_to_next_drop);
}
return frame->n_vectors;
}
-static char * ip6_discover_neighbor_error_strings[] = {
+static uword
+ip6_discover_neighbor (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return (ip6_discover_neighbor_inline (vm, node, frame, 0));
+}
+
+static uword
+ip6_glean (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return (ip6_discover_neighbor_inline (vm, node, frame, 1));
+}
+
+static char *ip6_discover_neighbor_error_strings[] = {
[IP6_DISCOVER_NEIGHBOR_ERROR_DROP] = "address overflow drops",
- [IP6_DISCOVER_NEIGHBOR_ERROR_REQUEST_SENT]
- = "neighbor solicitations sent",
+ [IP6_DISCOVER_NEIGHBOR_ERROR_REQUEST_SENT] = "neighbor solicitations sent",
[IP6_DISCOVER_NEIGHBOR_ERROR_NO_SOURCE_ADDRESS]
= "no source address for ND solicitation",
};
-VLIB_REGISTER_NODE (ip6_discover_neighbor_node) = {
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ip6_discover_neighbor_node) =
+{
.function = ip6_discover_neighbor,
.name = "ip6-discover-neighbor",
.vector_size = sizeof (u32),
-
.format_trace = format_ip6_forward_next_trace,
-
.n_errors = ARRAY_LEN (ip6_discover_neighbor_error_strings),
.error_strings = ip6_discover_neighbor_error_strings,
+ .n_next_nodes = IP6_DISCOVER_NEIGHBOR_N_NEXT,
+ .next_nodes =
+ {
+ [IP6_DISCOVER_NEIGHBOR_NEXT_DROP] = "error-drop",
+ [IP6_DISCOVER_NEIGHBOR_NEXT_REPLY_TX] = "interface-output",
+ },
+};
+/* *INDENT-ON* */
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ip6_glean_node) =
+{
+ .function = ip6_glean,
+ .name = "ip6-glean",
+ .vector_size = sizeof (u32),
+ .format_trace = format_ip6_forward_next_trace,
+ .n_errors = ARRAY_LEN (ip6_discover_neighbor_error_strings),
+ .error_strings = ip6_discover_neighbor_error_strings,
.n_next_nodes = IP6_DISCOVER_NEIGHBOR_N_NEXT,
- .next_nodes = {
+ .next_nodes =
+ {
[IP6_DISCOVER_NEIGHBOR_NEXT_DROP] = "error-drop",
[IP6_DISCOVER_NEIGHBOR_NEXT_REPLY_TX] = "interface-output",
},
};
+/* *INDENT-ON* */
clib_error_t *
ip6_probe_neighbor (vlib_main_t * vm, ip6_address_t * dst, u32 sw_if_index)
{
- vnet_main_t * vnm = vnet_get_main();
- ip6_main_t * im = &ip6_main;
- icmp6_neighbor_solicitation_header_t * h;
- ip6_address_t * src;
- ip_interface_address_t * ia;
- ip_adjacency_t * adj;
- vnet_hw_interface_t * hi;
- vnet_sw_interface_t * si;
- vlib_buffer_t * b;
+ vnet_main_t *vnm = vnet_get_main ();
+ ip6_main_t *im = &ip6_main;
+ icmp6_neighbor_solicitation_header_t *h;
+ ip6_address_t *src;
+ ip_interface_address_t *ia;
+ ip_adjacency_t *adj;
+ vnet_hw_interface_t *hi;
+ vnet_sw_interface_t *si;
+ vlib_buffer_t *b;
u32 bi = 0;
int bogus_length;
if (!(si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP))
{
return clib_error_return (0, "%U: interface %U down",
- format_ip6_address, dst,
- format_vnet_sw_if_index_name, vnm,
- sw_if_index);
+ format_ip6_address, dst,
+ format_vnet_sw_if_index_name, vnm,
+ sw_if_index);
}
- src = ip6_interface_address_matching_destination (im, dst, sw_if_index, &ia);
- if (! src)
+ src =
+ ip6_interface_address_matching_destination (im, dst, sw_if_index, &ia);
+ if (!src)
{
vnm->api_errno = VNET_API_ERROR_NO_MATCHING_INTERFACE;
- return clib_error_return
- (0, "no matching interface address for destination %U (interface %U)",
- format_ip6_address, dst,
- format_vnet_sw_if_index_name, vnm, sw_if_index);
+ return clib_error_return
+ (0, "no matching interface address for destination %U (interface %U)",
+ format_ip6_address, dst,
+ format_vnet_sw_if_index_name, vnm, sw_if_index);
}
- h = vlib_packet_template_get_packet (vm, &im->discover_neighbor_packet_template, &bi);
+ h =
+ vlib_packet_template_get_packet (vm,
+ &im->discover_neighbor_packet_template,
+ &bi);
hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
h->ip.src_address = src[0];
h->neighbor.target_address = dst[0];
- clib_memcpy (h->link_layer_option.ethernet_address, hi->hw_address, vec_len (hi->hw_address));
+ clib_memcpy (h->link_layer_option.ethernet_address, hi->hw_address,
+ vec_len (hi->hw_address));
- h->neighbor.icmp.checksum =
+ h->neighbor.icmp.checksum =
ip6_tcp_udp_icmp_compute_checksum (vm, 0, &h->ip, &bogus_length);
- ASSERT(bogus_length == 0);
+ ASSERT (bogus_length == 0);
b = vlib_get_buffer (vm, bi);
- vnet_buffer (b)->sw_if_index[VLIB_RX] = vnet_buffer (b)->sw_if_index[VLIB_TX] = sw_if_index;
+ vnet_buffer (b)->sw_if_index[VLIB_RX] =
+ vnet_buffer (b)->sw_if_index[VLIB_TX] = sw_if_index;
/* Add encapsulation string for software interface (e.g. ethernet header). */
adj = ip_get_adjacency (&im->lookup_main, ia->neighbor_probe_adj_index);
vlib_buffer_advance (b, -adj->rewrite_header.data_bytes);
{
- vlib_frame_t * f = vlib_get_frame_to_node (vm, hi->output_node_index);
- u32 * to_next = vlib_frame_vector_args (f);
+ vlib_frame_t *f = vlib_get_frame_to_node (vm, hi->output_node_index);
+ u32 *to_next = vlib_frame_vector_args (f);
to_next[0] = bi;
f->n_vectors = 1;
vlib_put_frame_to_node (vm, hi->output_node_index, f);
return /* no error */ 0;
}
-typedef enum {
+typedef enum
+{
IP6_REWRITE_NEXT_DROP,
IP6_REWRITE_NEXT_ICMP_ERROR,
} ip6_rewrite_next_t;
always_inline uword
ip6_rewrite_inline (vlib_main_t * vm,
vlib_node_runtime_t * node,
- vlib_frame_t * frame,
- int rewrite_for_locally_received_packets)
+ vlib_frame_t * frame, int is_midchain)
{
- ip_lookup_main_t * lm = &ip6_main.lookup_main;
- u32 * from = vlib_frame_vector_args (frame);
- u32 n_left_from, n_left_to_next, * to_next, next_index;
- vlib_node_runtime_t * error_node = vlib_node_get_runtime (vm, ip6_input_node.index);
- vlib_rx_or_tx_t adj_rx_tx = rewrite_for_locally_received_packets ? VLIB_RX : VLIB_TX;
+ ip_lookup_main_t *lm = &ip6_main.lookup_main;
+ u32 *from = vlib_frame_vector_args (frame);
+ u32 n_left_from, n_left_to_next, *to_next, next_index;
+ vlib_node_runtime_t *error_node =
+ vlib_node_get_runtime (vm, ip6_input_node.index);
n_left_from = frame->n_vectors;
next_index = node->cached_next_index;
- u32 cpu_index = os_get_cpu_number();
-
+ u32 cpu_index = os_get_cpu_number ();
+
while (n_left_from > 0)
{
vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
while (n_left_from >= 4 && n_left_to_next >= 2)
{
- ip_adjacency_t * adj0, * adj1;
- vlib_buffer_t * p0, * p1;
- ip6_header_t * ip0, * ip1;
+ ip_adjacency_t *adj0, *adj1;
+ vlib_buffer_t *p0, *p1;
+ ip6_header_t *ip0, *ip1;
u32 pi0, rw_len0, next0, error0, adj_index0;
u32 pi1, rw_len1, next1, error1, adj_index1;
-
+ u32 tx_sw_if_index0, tx_sw_if_index1;
+
/* Prefetch next iteration. */
{
- vlib_buffer_t * p2, * p3;
+ vlib_buffer_t *p2, *p3;
p2 = vlib_get_buffer (vm, from[2]);
p3 = vlib_get_buffer (vm, from[3]);
n_left_from -= 2;
to_next += 2;
n_left_to_next -= 2;
-
+
p0 = vlib_get_buffer (vm, pi0);
p1 = vlib_get_buffer (vm, pi1);
- adj_index0 = vnet_buffer (p0)->ip.adj_index[adj_rx_tx];
- adj_index1 = vnet_buffer (p1)->ip.adj_index[adj_rx_tx];
+ adj_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX];
+ adj_index1 = vnet_buffer (p1)->ip.adj_index[VLIB_TX];
- /* We should never rewrite a pkt using the MISS adjacency */
- ASSERT(adj_index0 && adj_index1);
+ /* We should never rewrite a pkt using the MISS adjacency */
+ ASSERT (adj_index0 && adj_index1);
ip0 = vlib_buffer_get_current (p0);
ip1 = vlib_buffer_get_current (p1);
error0 = error1 = IP6_ERROR_NONE;
- next0 = next1 = IP6_REWRITE_NEXT_DROP;
+ next0 = next1 = IP6_REWRITE_NEXT_DROP;
- if (! rewrite_for_locally_received_packets)
+ if (PREDICT_TRUE (!(p0->flags & VNET_BUFFER_LOCALLY_ORIGINATED)))
{
- i32 hop_limit0 = ip0->hop_limit, hop_limit1 = ip1->hop_limit;
+ i32 hop_limit0 = ip0->hop_limit;
/* Input node should have reject packets with hop limit 0. */
ASSERT (ip0->hop_limit > 0);
- ASSERT (ip1->hop_limit > 0);
hop_limit0 -= 1;
- hop_limit1 -= 1;
ip0->hop_limit = hop_limit0;
+
+ /*
+ * If the hop count drops below 1 when forwarding, generate
+ * an ICMP response.
+ */
+ if (PREDICT_FALSE (hop_limit0 <= 0))
+ {
+ error0 = IP6_ERROR_TIME_EXPIRED;
+ next0 = IP6_REWRITE_NEXT_ICMP_ERROR;
+ vnet_buffer (p0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ icmp6_error_set_vnet_buffer (p0, ICMP6_time_exceeded,
+ ICMP6_time_exceeded_ttl_exceeded_in_transit,
+ 0);
+ }
+ }
+ else
+ {
+ p0->flags &= ~VNET_BUFFER_LOCALLY_ORIGINATED;
+ }
+ if (PREDICT_TRUE (!(p1->flags & VNET_BUFFER_LOCALLY_ORIGINATED)))
+ {
+ i32 hop_limit1 = ip1->hop_limit;
+
+ /* Input node should have reject packets with hop limit 0. */
+ ASSERT (ip1->hop_limit > 0);
+
+ hop_limit1 -= 1;
+
ip1->hop_limit = hop_limit1;
- /*
- * If the hop count drops below 1 when forwarding, generate
- * an ICMP response.
- */
- if (PREDICT_FALSE(hop_limit0 <= 0))
- {
- error0 = IP6_ERROR_TIME_EXPIRED;
- next0 = IP6_REWRITE_NEXT_ICMP_ERROR;
- vnet_buffer (p0)->sw_if_index[VLIB_TX] = (u32)~0;
- icmp6_error_set_vnet_buffer(p0, ICMP6_time_exceeded,
- ICMP6_time_exceeded_ttl_exceeded_in_transit, 0);
- }
- if (PREDICT_FALSE(hop_limit1 <= 0))
- {
- error1 = IP6_ERROR_TIME_EXPIRED;
- next1 = IP6_REWRITE_NEXT_ICMP_ERROR;
- vnet_buffer (p1)->sw_if_index[VLIB_TX] = (u32)~0;
- icmp6_error_set_vnet_buffer(p1, ICMP6_time_exceeded,
- ICMP6_time_exceeded_ttl_exceeded_in_transit, 0);
- }
+ /*
+ * If the hop count drops below 1 when forwarding, generate
+ * an ICMP response.
+ */
+ if (PREDICT_FALSE (hop_limit1 <= 0))
+ {
+ error1 = IP6_ERROR_TIME_EXPIRED;
+ next1 = IP6_REWRITE_NEXT_ICMP_ERROR;
+ vnet_buffer (p1)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ icmp6_error_set_vnet_buffer (p1, ICMP6_time_exceeded,
+ ICMP6_time_exceeded_ttl_exceeded_in_transit,
+ 0);
+ }
+ }
+ else
+ {
+ p1->flags &= ~VNET_BUFFER_LOCALLY_ORIGINATED;
}
-
adj0 = ip_get_adjacency (lm, adj_index0);
adj1 = ip_get_adjacency (lm, adj_index1);
- if (rewrite_for_locally_received_packets)
- {
- /*
- * If someone sends e.g. an icmp6 w/ src = dst = interface addr,
- * we end up here with a local adjacency in hand
- */
- if (PREDICT_FALSE(adj0->lookup_next_index
- == IP_LOOKUP_NEXT_LOCAL))
- error0 = IP6_ERROR_SPOOFED_LOCAL_PACKETS;
- if (PREDICT_FALSE(adj1->lookup_next_index
- == IP_LOOKUP_NEXT_LOCAL))
- error1 = IP6_ERROR_SPOOFED_LOCAL_PACKETS;
- }
-
rw_len0 = adj0[0].rewrite_header.data_bytes;
rw_len1 = adj1[0].rewrite_header.data_bytes;
+ vnet_buffer (p0)->ip.save_rewrite_length = rw_len0;
+ vnet_buffer (p1)->ip.save_rewrite_length = rw_len1;
- vlib_increment_combined_counter (&lm->adjacency_counters,
- cpu_index,
- adj_index0,
+ vlib_increment_combined_counter (&adjacency_counters,
+ cpu_index, adj_index0,
/* packet increment */ 0,
/* byte increment */ rw_len0);
- vlib_increment_combined_counter (&lm->adjacency_counters,
- cpu_index,
- adj_index1,
+ vlib_increment_combined_counter (&adjacency_counters,
+ cpu_index, adj_index1,
/* packet increment */ 0,
/* byte increment */ rw_len1);
/* Check MTU of outgoing interface. */
- error0 = (vlib_buffer_length_in_chain (vm, p0) > adj0[0].rewrite_header.max_l3_packet_bytes
- ? IP6_ERROR_MTU_EXCEEDED
- : error0);
- error1 = (vlib_buffer_length_in_chain (vm, p1) > adj1[0].rewrite_header.max_l3_packet_bytes
- ? IP6_ERROR_MTU_EXCEEDED
- : error1);
-
- /* Don't adjust the buffer for hop count issue; icmp-error node
- * wants to see the IP headerr */
- if (PREDICT_TRUE(error0 == IP6_ERROR_NONE))
- {
- p0->current_data -= rw_len0;
- p0->current_length += rw_len0;
-
- vnet_buffer (p0)->sw_if_index[VLIB_TX] =
- adj0[0].rewrite_header.sw_if_index;
- next0 = adj0[0].rewrite_header.next_index;
- }
- if (PREDICT_TRUE(error1 == IP6_ERROR_NONE))
- {
- p1->current_data -= rw_len1;
- p1->current_length += rw_len1;
-
- vnet_buffer (p1)->sw_if_index[VLIB_TX] =
- adj1[0].rewrite_header.sw_if_index;
- next1 = adj1[0].rewrite_header.next_index;
- }
+ error0 =
+ (vlib_buffer_length_in_chain (vm, p0) >
+ adj0[0].
+ rewrite_header.max_l3_packet_bytes ? IP6_ERROR_MTU_EXCEEDED :
+ error0);
+ error1 =
+ (vlib_buffer_length_in_chain (vm, p1) >
+ adj1[0].
+ rewrite_header.max_l3_packet_bytes ? IP6_ERROR_MTU_EXCEEDED :
+ error1);
+
+ /* Don't adjust the buffer for hop count issue; icmp-error node
+ * wants to see the IP headerr */
+ if (PREDICT_TRUE (error0 == IP6_ERROR_NONE))
+ {
+ p0->current_data -= rw_len0;
+ p0->current_length += rw_len0;
+
+ tx_sw_if_index0 = adj0[0].rewrite_header.sw_if_index;
+ vnet_buffer (p0)->sw_if_index[VLIB_TX] = tx_sw_if_index0;
+ next0 = adj0[0].rewrite_header.next_index;
+
+ vnet_feature_arc_start (lm->output_feature_arc_index,
+ tx_sw_if_index0, &next0, p0);
+ }
+ if (PREDICT_TRUE (error1 == IP6_ERROR_NONE))
+ {
+ p1->current_data -= rw_len1;
+ p1->current_length += rw_len1;
+
+ tx_sw_if_index1 = adj1[0].rewrite_header.sw_if_index;
+ vnet_buffer (p1)->sw_if_index[VLIB_TX] = tx_sw_if_index1;
+ next1 = adj1[0].rewrite_header.next_index;
+
+ vnet_feature_arc_start (lm->output_feature_arc_index,
+ tx_sw_if_index1, &next1, p1);
+ }
/* Guess we are only writing on simple Ethernet header. */
vnet_rewrite_two_headers (adj0[0], adj1[0],
- ip0, ip1,
- sizeof (ethernet_header_t));
-
+ ip0, ip1, sizeof (ethernet_header_t));
+
+ if (is_midchain)
+ {
+ adj0->sub_type.midchain.fixup_func (vm, adj0, p0);
+ adj1->sub_type.midchain.fixup_func (vm, adj1, p1);
+ }
+
vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
to_next, n_left_to_next,
pi0, pi1, next0, next1);
while (n_left_from > 0 && n_left_to_next > 0)
{
- ip_adjacency_t * adj0;
- vlib_buffer_t * p0;
- ip6_header_t * ip0;
+ ip_adjacency_t *adj0;
+ vlib_buffer_t *p0;
+ ip6_header_t *ip0;
u32 pi0, rw_len0;
u32 adj_index0, next0, error0;
-
+ u32 tx_sw_if_index0;
+
pi0 = to_next[0] = from[0];
p0 = vlib_get_buffer (vm, pi0);
- adj_index0 = vnet_buffer (p0)->ip.adj_index[adj_rx_tx];
+ adj_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX];
- /* We should never rewrite a pkt using the MISS adjacency */
- ASSERT(adj_index0);
+ /* We should never rewrite a pkt using the MISS adjacency */
+ ASSERT (adj_index0);
adj0 = ip_get_adjacency (lm, adj_index0);
-
+
ip0 = vlib_buffer_get_current (p0);
error0 = IP6_ERROR_NONE;
- next0 = IP6_REWRITE_NEXT_DROP;
+ next0 = IP6_REWRITE_NEXT_DROP;
/* Check hop limit */
- if (! rewrite_for_locally_received_packets)
+ if (PREDICT_TRUE (!(p0->flags & VNET_BUFFER_LOCALLY_ORIGINATED)))
{
i32 hop_limit0 = ip0->hop_limit;
ip0->hop_limit = hop_limit0;
- if (PREDICT_FALSE(hop_limit0 <= 0))
- {
- /*
- * If the hop count drops below 1 when forwarding, generate
- * an ICMP response.
- */
- error0 = IP6_ERROR_TIME_EXPIRED;
- next0 = IP6_REWRITE_NEXT_ICMP_ERROR;
- vnet_buffer (p0)->sw_if_index[VLIB_TX] = (u32)~0;
- icmp6_error_set_vnet_buffer(p0, ICMP6_time_exceeded,
- ICMP6_time_exceeded_ttl_exceeded_in_transit, 0);
- }
+ if (PREDICT_FALSE (hop_limit0 <= 0))
+ {
+ /*
+ * If the hop count drops below 1 when forwarding, generate
+ * an ICMP response.
+ */
+ error0 = IP6_ERROR_TIME_EXPIRED;
+ next0 = IP6_REWRITE_NEXT_ICMP_ERROR;
+ vnet_buffer (p0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ icmp6_error_set_vnet_buffer (p0, ICMP6_time_exceeded,
+ ICMP6_time_exceeded_ttl_exceeded_in_transit,
+ 0);
+ }
+ }
+ else
+ {
+ p0->flags &= ~VNET_BUFFER_LOCALLY_ORIGINATED;
}
-
- if (rewrite_for_locally_received_packets)
- {
- if (PREDICT_FALSE(adj0->lookup_next_index
- == IP_LOOKUP_NEXT_LOCAL))
- error0 = IP6_ERROR_SPOOFED_LOCAL_PACKETS;
- }
/* Guess we are only writing on simple Ethernet header. */
vnet_rewrite_one_header (adj0[0], ip0, sizeof (ethernet_header_t));
-
+
/* Update packet buffer attributes/set output interface. */
rw_len0 = adj0[0].rewrite_header.data_bytes;
+ vnet_buffer (p0)->ip.save_rewrite_length = rw_len0;
- vlib_increment_combined_counter (&lm->adjacency_counters,
- cpu_index,
- adj_index0,
+ vlib_increment_combined_counter (&adjacency_counters,
+ cpu_index, adj_index0,
/* packet increment */ 0,
/* byte increment */ rw_len0);
/* Check MTU of outgoing interface. */
- error0 = (vlib_buffer_length_in_chain (vm, p0) > adj0[0].rewrite_header.max_l3_packet_bytes
- ? IP6_ERROR_MTU_EXCEEDED
- : error0);
-
- /* Don't adjust the buffer for hop count issue; icmp-error node
- * wants to see the IP headerr */
- if (PREDICT_TRUE(error0 == IP6_ERROR_NONE))
- {
+ error0 =
+ (vlib_buffer_length_in_chain (vm, p0) >
+ adj0[0].
+ rewrite_header.max_l3_packet_bytes ? IP6_ERROR_MTU_EXCEEDED :
+ error0);
+
+ /* Don't adjust the buffer for hop count issue; icmp-error node
+ * wants to see the IP headerr */
+ if (PREDICT_TRUE (error0 == IP6_ERROR_NONE))
+ {
p0->current_data -= rw_len0;
p0->current_length += rw_len0;
- vnet_buffer (p0)->sw_if_index[VLIB_TX] =
- adj0[0].rewrite_header.sw_if_index;
- next0 = adj0[0].rewrite_header.next_index;
- }
+ tx_sw_if_index0 = adj0[0].rewrite_header.sw_if_index;
+
+ vnet_buffer (p0)->sw_if_index[VLIB_TX] = tx_sw_if_index0;
+ next0 = adj0[0].rewrite_header.next_index;
+
+ vnet_feature_arc_start (lm->output_feature_arc_index,
+ tx_sw_if_index0, &next0, p0);
+ }
+
+ if (is_midchain)
+ {
+ adj0->sub_type.midchain.fixup_func (vm, adj0, p0);
+ }
p0->error = error_node->errors[error0];
n_left_from -= 1;
to_next += 1;
n_left_to_next -= 1;
-
+
vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
to_next, n_left_to_next,
pi0, next0);
/* Need to do trace after rewrites to pick up new packet data. */
if (node->flags & VLIB_NODE_FLAG_TRACE)
- ip6_forward_next_trace (vm, node, frame, adj_rx_tx);
+ ip6_forward_next_trace (vm, node, frame, VLIB_TX);
return frame->n_vectors;
}
static uword
-ip6_rewrite_transit (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+ip6_rewrite (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
{
return ip6_rewrite_inline (vm, node, frame,
- /* rewrite_for_locally_received_packets */ 0);
+ /* midchain */ 0);
}
static uword
-ip6_rewrite_local (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+ip6_midchain (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
{
return ip6_rewrite_inline (vm, node, frame,
- /* rewrite_for_locally_received_packets */ 1);
+ /* midchain */ 1);
}
-VLIB_REGISTER_NODE (ip6_rewrite_node) = {
- .function = ip6_rewrite_transit,
- .name = "ip6-rewrite",
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ip6_midchain_node) =
+{
+ .function = ip6_midchain,
+ .name = "ip6-midchain",
.vector_size = sizeof (u32),
+ .format_trace = format_ip6_forward_next_trace,
+ .sibling_of = "ip6-rewrite",
+ };
+/* *INDENT-ON* */
- .format_trace = format_ip6_rewrite_trace,
+VLIB_NODE_FUNCTION_MULTIARCH (ip6_midchain_node, ip6_midchain);
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ip6_rewrite_node) =
+{
+ .function = ip6_rewrite,
+ .name = "ip6-rewrite",
+ .vector_size = sizeof (u32),
+ .format_trace = format_ip6_rewrite_trace,
.n_next_nodes = 2,
- .next_nodes = {
+ .next_nodes =
+ {
[IP6_REWRITE_NEXT_DROP] = "error-drop",
[IP6_REWRITE_NEXT_ICMP_ERROR] = "ip6-icmp-error",
},
};
+/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (ip6_rewrite_node, ip6_rewrite_transit)
-
-VLIB_REGISTER_NODE (ip6_rewrite_local_node) = {
- .function = ip6_rewrite_local,
- .name = "ip6-rewrite-local",
- .vector_size = sizeof (u32),
-
- .sibling_of = "ip6-rewrite",
-
- .format_trace = format_ip6_rewrite_trace,
-
- .n_next_nodes = 0,
-};
-
-VLIB_NODE_FUNCTION_MULTIARCH (ip6_rewrite_local_node, ip6_rewrite_local)
+VLIB_NODE_FUNCTION_MULTIARCH (ip6_rewrite_node, ip6_rewrite);
/*
* Hop-by-Hop handling
_(FORMAT, "incorrectly formatted hop-by-hop options") \
_(UNKNOWN_OPTION, "unknown ip6 hop-by-hop options")
-typedef enum {
+typedef enum
+{
#define _(sym,str) IP6_HOP_BY_HOP_ERROR_##sym,
foreach_ip6_hop_by_hop_error
#undef _
- IP6_HOP_BY_HOP_N_ERROR,
+ IP6_HOP_BY_HOP_N_ERROR,
} ip6_hop_by_hop_error_t;
/*
* Primary h-b-h handler trace support
* We work pretty hard on the problem for obvious reasons
*/
-typedef struct {
+typedef struct
+{
u32 next_index;
u32 trace_len;
u8 option_data[256];
vlib_node_registration_t ip6_hop_by_hop_node;
-static char * ip6_hop_by_hop_error_strings[] = {
+static char *ip6_hop_by_hop_error_strings[] = {
#define _(sym,string) string,
foreach_ip6_hop_by_hop_error
#undef _
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
- ip6_hop_by_hop_trace_t * t = va_arg (*args, ip6_hop_by_hop_trace_t *);
+ ip6_hop_by_hop_trace_t *t = va_arg (*args, ip6_hop_by_hop_trace_t *);
ip6_hop_by_hop_header_t *hbh0;
ip6_hop_by_hop_option_t *opt0, *limit0;
ip6_hop_by_hop_main_t *hm = &ip6_hop_by_hop_main;
u8 type0;
- hbh0 = (ip6_hop_by_hop_header_t *)t->option_data;
+ hbh0 = (ip6_hop_by_hop_header_t *) t->option_data;
s = format (s, "IP6_HOP_BY_HOP: next index %d len %d traced %d",
- t->next_index, (hbh0->length+1)<<3, t->trace_len);
+ t->next_index, (hbh0->length + 1) << 3, t->trace_len);
- opt0 = (ip6_hop_by_hop_option_t *) (hbh0+1);
- limit0 = (ip6_hop_by_hop_option_t *) ((u8 *)hbh0) + t->trace_len;
+ opt0 = (ip6_hop_by_hop_option_t *) (hbh0 + 1);
+ limit0 = (ip6_hop_by_hop_option_t *) ((u8 *) hbh0) + t->trace_len;
- while (opt0 < limit0) {
- type0 = opt0->type;
- switch (type0) {
- case 0: /* Pad, just stop */
- opt0 = (ip6_hop_by_hop_option_t *) ((u8 *)opt0) + 1;
- break;
+ while (opt0 < limit0)
+ {
+ type0 = opt0->type;
+ switch (type0)
+ {
+ case 0: /* Pad, just stop */
+ opt0 = (ip6_hop_by_hop_option_t *) ((u8 *) opt0) + 1;
+ break;
- default:
- if (hm->trace[type0]) {
- s = (*hm->trace[type0])(s, opt0);
- } else {
- s = format (s, "\n unrecognized option %d length %d", type0, opt0->length);
- }
- opt0 = (ip6_hop_by_hop_option_t *) (((u8 *)opt0) + opt0->length + sizeof (ip6_hop_by_hop_option_t));
- break;
+ default:
+ if (hm->trace[type0])
+ {
+ s = (*hm->trace[type0]) (s, opt0);
+ }
+ else
+ {
+ s =
+ format (s, "\n unrecognized option %d length %d", type0,
+ opt0->length);
+ }
+ opt0 =
+ (ip6_hop_by_hop_option_t *) (((u8 *) opt0) + opt0->length +
+ sizeof (ip6_hop_by_hop_option_t));
+ break;
+ }
}
- }
return s;
}
+always_inline u8
+ip6_scan_hbh_options (vlib_buffer_t * b0,
+ ip6_header_t * ip0,
+ ip6_hop_by_hop_header_t * hbh0,
+ ip6_hop_by_hop_option_t * opt0,
+ ip6_hop_by_hop_option_t * limit0, u32 * next0)
+{
+ ip6_hop_by_hop_main_t *hm = &ip6_hop_by_hop_main;
+ u8 type0;
+ u8 error0 = 0;
+
+ while (opt0 < limit0)
+ {
+ type0 = opt0->type;
+ switch (type0)
+ {
+ case 0: /* Pad1 */
+ opt0 = (ip6_hop_by_hop_option_t *) ((u8 *) opt0) + 1;
+ continue;
+ case 1: /* PadN */
+ break;
+ default:
+ if (hm->options[type0])
+ {
+ if ((*hm->options[type0]) (b0, ip0, opt0) < 0)
+ {
+ error0 = IP6_HOP_BY_HOP_ERROR_FORMAT;
+ return (error0);
+ }
+ }
+ else
+ {
+ /* Unrecognized mandatory option, check the two high order bits */
+ switch (opt0->type & HBH_OPTION_TYPE_HIGH_ORDER_BITS)
+ {
+ case HBH_OPTION_TYPE_SKIP_UNKNOWN:
+ break;
+ case HBH_OPTION_TYPE_DISCARD_UNKNOWN:
+ error0 = IP6_HOP_BY_HOP_ERROR_UNKNOWN_OPTION;
+ *next0 = IP_LOOKUP_NEXT_DROP;
+ break;
+ case HBH_OPTION_TYPE_DISCARD_UNKNOWN_ICMP:
+ error0 = IP6_HOP_BY_HOP_ERROR_UNKNOWN_OPTION;
+ *next0 = IP_LOOKUP_NEXT_ICMP_ERROR;
+ icmp6_error_set_vnet_buffer (b0, ICMP6_parameter_problem,
+ ICMP6_parameter_problem_unrecognized_option,
+ (u8 *) opt0 - (u8 *) ip0);
+ break;
+ case HBH_OPTION_TYPE_DISCARD_UNKNOWN_ICMP_NOT_MCAST:
+ error0 = IP6_HOP_BY_HOP_ERROR_UNKNOWN_OPTION;
+ if (!ip6_address_is_multicast (&ip0->dst_address))
+ {
+ *next0 = IP_LOOKUP_NEXT_ICMP_ERROR;
+ icmp6_error_set_vnet_buffer (b0,
+ ICMP6_parameter_problem,
+ ICMP6_parameter_problem_unrecognized_option,
+ (u8 *) opt0 - (u8 *) ip0);
+ }
+ else
+ {
+ *next0 = IP_LOOKUP_NEXT_DROP;
+ }
+ break;
+ }
+ return (error0);
+ }
+ }
+ opt0 =
+ (ip6_hop_by_hop_option_t *) (((u8 *) opt0) + opt0->length +
+ sizeof (ip6_hop_by_hop_option_t));
+ }
+ return (error0);
+}
+
/*
* Process the Hop-by-Hop Options header
*/
static uword
ip6_hop_by_hop (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
{
- vlib_node_runtime_t *error_node = vlib_node_get_runtime(vm, ip6_hop_by_hop_node.index);
+ vlib_node_runtime_t *error_node =
+ vlib_node_get_runtime (vm, ip6_hop_by_hop_node.index);
ip6_hop_by_hop_main_t *hm = &ip6_hop_by_hop_main;
u32 n_left_from, *from, *to_next;
ip_lookup_next_t next_index;
- ip6_main_t * im = &ip6_main;
+ ip6_main_t *im = &ip6_main;
ip_lookup_main_t *lm = &im->lookup_main;
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
next_index = node->cached_next_index;
- while (n_left_from > 0) {
- u32 n_left_to_next;
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
- while (n_left_from > 0 && n_left_to_next > 0) {
- u32 bi0;
- vlib_buffer_t * b0;
- u32 next0;
- ip6_header_t * ip0;
- ip6_hop_by_hop_header_t *hbh0;
- ip6_hop_by_hop_option_t *opt0, *limit0;
- u8 type0;
- u8 error0 = 0;
-
- /* Speculatively enqueue b0 to the current next frame */
- bi0 = from[0];
- to_next[0] = bi0;
- from += 1;
- to_next += 1;
- n_left_from -= 1;
- n_left_to_next -= 1;
+ while (n_left_from >= 4 && n_left_to_next >= 2)
+ {
+ u32 bi0, bi1;
+ vlib_buffer_t *b0, *b1;
+ u32 next0, next1;
+ ip6_header_t *ip0, *ip1;
+ ip6_hop_by_hop_header_t *hbh0, *hbh1;
+ ip6_hop_by_hop_option_t *opt0, *limit0, *opt1, *limit1;
+ u8 error0 = 0, error1 = 0;
- b0 = vlib_get_buffer (vm, bi0);
- u32 adj_index0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
- ip_adjacency_t *adj0 = ip_get_adjacency(lm, adj_index0);
- /* Default use the next_index from the adjacency. A HBH option rarely redirects to a different node */
- next0 = adj0->lookup_next_index;
-
- ip0 = vlib_buffer_get_current (b0);
- hbh0 = (ip6_hop_by_hop_header_t *)(ip0+1);
- opt0 = (ip6_hop_by_hop_option_t *)(hbh0+1);
- limit0 = (ip6_hop_by_hop_option_t *)((u8 *)hbh0 + ((hbh0->length + 1) << 3));
-
- /*
- * Basic validity checks
- */
- if ((hbh0->length + 1) << 3 > clib_net_to_host_u16(ip0->payload_length)) {
- error0 = IP6_HOP_BY_HOP_ERROR_FORMAT;
- next0 = IP_LOOKUP_NEXT_DROP;
- goto out0;
- }
-
- /* Scan the set of h-b-h options, process ones that we understand */
- while (opt0 < limit0) {
- type0 = opt0->type;
- switch (type0) {
- case 0: /* Pad1 */
- opt0 = (ip6_hop_by_hop_option_t *) ((u8 *)opt0) + 1;
- continue;
- case 1: /* PadN */
- break;
- default:
- if (hm->options[type0]) {
- if ((*hm->options[type0])(b0, ip0, opt0) < 0) {
+ /* Prefetch next iteration. */
+ {
+ vlib_buffer_t *p2, *p3;
+
+ p2 = vlib_get_buffer (vm, from[2]);
+ p3 = vlib_get_buffer (vm, from[3]);
+
+ vlib_prefetch_buffer_header (p2, LOAD);
+ vlib_prefetch_buffer_header (p3, LOAD);
+
+ CLIB_PREFETCH (p2->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
+ CLIB_PREFETCH (p3->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
+ }
+
+ /* Speculatively enqueue b0, b1 to the current next frame */
+ to_next[0] = bi0 = from[0];
+ to_next[1] = bi1 = from[1];
+ from += 2;
+ to_next += 2;
+ n_left_from -= 2;
+ n_left_to_next -= 2;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ b1 = vlib_get_buffer (vm, bi1);
+
+ /* Default use the next_index from the adjacency. A HBH option rarely redirects to a different node */
+ u32 adj_index0 = vnet_buffer (b0)->ip.adj_index[VLIB_TX];
+ ip_adjacency_t *adj0 = ip_get_adjacency (lm, adj_index0);
+ u32 adj_index1 = vnet_buffer (b1)->ip.adj_index[VLIB_TX];
+ ip_adjacency_t *adj1 = ip_get_adjacency (lm, adj_index1);
+
+ /* Default use the next_index from the adjacency. A HBH option rarely redirects to a different node */
+ next0 = adj0->lookup_next_index;
+ next1 = adj1->lookup_next_index;
+
+ ip0 = vlib_buffer_get_current (b0);
+ ip1 = vlib_buffer_get_current (b1);
+ hbh0 = (ip6_hop_by_hop_header_t *) (ip0 + 1);
+ hbh1 = (ip6_hop_by_hop_header_t *) (ip1 + 1);
+ opt0 = (ip6_hop_by_hop_option_t *) (hbh0 + 1);
+ opt1 = (ip6_hop_by_hop_option_t *) (hbh1 + 1);
+ limit0 =
+ (ip6_hop_by_hop_option_t *) ((u8 *) hbh0 +
+ ((hbh0->length + 1) << 3));
+ limit1 =
+ (ip6_hop_by_hop_option_t *) ((u8 *) hbh1 +
+ ((hbh1->length + 1) << 3));
+
+ /*
+ * Basic validity checks
+ */
+ if ((hbh0->length + 1) << 3 >
+ clib_net_to_host_u16 (ip0->payload_length))
+ {
error0 = IP6_HOP_BY_HOP_ERROR_FORMAT;
- goto out0;
+ next0 = IP_LOOKUP_NEXT_DROP;
+ goto outdual;
+ }
+ /* Scan the set of h-b-h options, process ones that we understand */
+ error0 = ip6_scan_hbh_options (b0, ip0, hbh0, opt0, limit0, &next0);
+
+ if ((hbh1->length + 1) << 3 >
+ clib_net_to_host_u16 (ip1->payload_length))
+ {
+ error1 = IP6_HOP_BY_HOP_ERROR_FORMAT;
+ next1 = IP_LOOKUP_NEXT_DROP;
+ goto outdual;
+ }
+ /* Scan the set of h-b-h options, process ones that we understand */
+ error1 = ip6_scan_hbh_options (b1, ip1, hbh1, opt1, limit1, &next1);
+
+ outdual:
+ /* Has the classifier flagged this buffer for special treatment? */
+ if (PREDICT_FALSE
+ ((error0 == 0)
+ && (vnet_buffer (b0)->l2_classify.opaque_index & OI_DECAP)))
+ next0 = hm->next_override;
+
+ /* Has the classifier flagged this buffer for special treatment? */
+ if (PREDICT_FALSE
+ ((error1 == 0)
+ && (vnet_buffer (b1)->l2_classify.opaque_index & OI_DECAP)))
+ next1 = hm->next_override;
+
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
+ {
+ if (b0->flags & VLIB_BUFFER_IS_TRACED)
+ {
+ ip6_hop_by_hop_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ u32 trace_len = (hbh0->length + 1) << 3;
+ t->next_index = next0;
+ /* Capture the h-b-h option verbatim */
+ trace_len =
+ trace_len <
+ ARRAY_LEN (t->option_data) ? trace_len :
+ ARRAY_LEN (t->option_data);
+ t->trace_len = trace_len;
+ clib_memcpy (t->option_data, hbh0, trace_len);
+ }
+ if (b1->flags & VLIB_BUFFER_IS_TRACED)
+ {
+ ip6_hop_by_hop_trace_t *t =
+ vlib_add_trace (vm, node, b1, sizeof (*t));
+ u32 trace_len = (hbh1->length + 1) << 3;
+ t->next_index = next1;
+ /* Capture the h-b-h option verbatim */
+ trace_len =
+ trace_len <
+ ARRAY_LEN (t->option_data) ? trace_len :
+ ARRAY_LEN (t->option_data);
+ t->trace_len = trace_len;
+ clib_memcpy (t->option_data, hbh1, trace_len);
+ }
+
}
- } else {
- /* Unrecognized mandatory option, check the two high order bits */
- switch (opt0->type & HBH_OPTION_TYPE_HIGH_ORDER_BITS) {
- case HBH_OPTION_TYPE_SKIP_UNKNOWN:
- break;
- case HBH_OPTION_TYPE_DISCARD_UNKNOWN:
+
+ b0->error = error_node->errors[error0];
+ b1->error = error_node->errors[error1];
+
+ /* verify speculative enqueue, maybe switch current next frame */
+ vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
+ n_left_to_next, bi0, bi1, next0,
+ next1);
+ }
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 bi0;
+ vlib_buffer_t *b0;
+ u32 next0;
+ ip6_header_t *ip0;
+ ip6_hop_by_hop_header_t *hbh0;
+ ip6_hop_by_hop_option_t *opt0, *limit0;
+ u8 error0 = 0;
+
+ /* Speculatively enqueue b0 to the current next frame */
+ bi0 = from[0];
+ to_next[0] = bi0;
+ from += 1;
+ to_next += 1;
+ n_left_from -= 1;
+ n_left_to_next -= 1;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ /*
+ * Default use the next_index from the adjacency.
+ * A HBH option rarely redirects to a different node
+ */
+ u32 adj_index0 = vnet_buffer (b0)->ip.adj_index[VLIB_TX];
+ ip_adjacency_t *adj0 = ip_get_adjacency (lm, adj_index0);
+ next0 = adj0->lookup_next_index;
+
+ ip0 = vlib_buffer_get_current (b0);
+ hbh0 = (ip6_hop_by_hop_header_t *) (ip0 + 1);
+ opt0 = (ip6_hop_by_hop_option_t *) (hbh0 + 1);
+ limit0 =
+ (ip6_hop_by_hop_option_t *) ((u8 *) hbh0 +
+ ((hbh0->length + 1) << 3));
+
+ /*
+ * Basic validity checks
+ */
+ if ((hbh0->length + 1) << 3 >
+ clib_net_to_host_u16 (ip0->payload_length))
+ {
+ error0 = IP6_HOP_BY_HOP_ERROR_FORMAT;
next0 = IP_LOOKUP_NEXT_DROP;
- break;
- case HBH_OPTION_TYPE_DISCARD_UNKNOWN_ICMP:
- next0 = IP_LOOKUP_NEXT_ICMP_ERROR;
- icmp6_error_set_vnet_buffer(b0, ICMP6_parameter_problem,
- ICMP6_parameter_problem_unrecognized_option, (u8 *)opt0 - (u8 *)ip0);
- break;
- case HBH_OPTION_TYPE_DISCARD_UNKNOWN_ICMP_NOT_MCAST:
- if (!ip6_address_is_multicast(&ip0->dst_address)) {
- next0 = IP_LOOKUP_NEXT_ICMP_ERROR;
- icmp6_error_set_vnet_buffer(b0, ICMP6_parameter_problem,
- ICMP6_parameter_problem_unrecognized_option, (u8 *)opt0 - (u8 *)ip0);
- } else {
- next0 = IP_LOOKUP_NEXT_DROP;
- }
- break;
+ goto out0;
}
- error0 = IP6_HOP_BY_HOP_ERROR_UNKNOWN_OPTION;
- goto out0;
- }
+
+ /* Scan the set of h-b-h options, process ones that we understand */
+ error0 = ip6_scan_hbh_options (b0, ip0, hbh0, opt0, limit0, &next0);
+
+ out0:
+ /* Has the classifier flagged this buffer for special treatment? */
+ if (PREDICT_FALSE
+ ((error0 == 0)
+ && (vnet_buffer (b0)->l2_classify.opaque_index & OI_DECAP)))
+ next0 = hm->next_override;
+
+ if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ ip6_hop_by_hop_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ u32 trace_len = (hbh0->length + 1) << 3;
+ t->next_index = next0;
+ /* Capture the h-b-h option verbatim */
+ trace_len =
+ trace_len <
+ ARRAY_LEN (t->option_data) ? trace_len :
+ ARRAY_LEN (t->option_data);
+ t->trace_len = trace_len;
+ clib_memcpy (t->option_data, hbh0, trace_len);
+ }
+
+ b0->error = error_node->errors[error0];
+
+ /* verify speculative enqueue, maybe switch current next frame */
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
+ n_left_to_next, bi0, next0);
}
- opt0 = (ip6_hop_by_hop_option_t *) (((u8 *)opt0) + opt0->length + sizeof (ip6_hop_by_hop_option_t));
- }
-
- out0:
- /* Has the classifier flagged this buffer for special treatment? */
- if ((error0 == 0) && (vnet_buffer(b0)->l2_classify.opaque_index == OI_DECAP))
- next0 = IP6_LOOKUP_NEXT_POP_HOP_BY_HOP;
-
- if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) {
- ip6_hop_by_hop_trace_t *t = vlib_add_trace(vm, node, b0, sizeof (*t));
- u32 trace_len = (hbh0->length + 1) << 3;
- t->next_index = next0;
- /* Capture the h-b-h option verbatim */
- trace_len = trace_len < ARRAY_LEN(t->option_data) ? trace_len : ARRAY_LEN(t->option_data);
- t->trace_len = trace_len;
- clib_memcpy(t->option_data, hbh0, trace_len);
- }
-
- b0->error = error_node->errors[error0];
-
- /* verify speculative enqueue, maybe switch current next frame */
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, n_left_to_next, bi0, next0);
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
- }
return frame->n_vectors;
}
-VLIB_REGISTER_NODE (ip6_hop_by_hop_node) = {
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ip6_hop_by_hop_node) =
+{
.function = ip6_hop_by_hop,
.name = "ip6-hop-by-hop",
.sibling_of = "ip6-lookup",
.vector_size = sizeof (u32),
.format_trace = format_ip6_hop_by_hop_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
- .n_errors = ARRAY_LEN(ip6_hop_by_hop_error_strings),
+ .n_errors = ARRAY_LEN (ip6_hop_by_hop_error_strings),
.error_strings = ip6_hop_by_hop_error_strings,
.n_next_nodes = 0,
};
+/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (ip6_hop_by_hop_node, ip6_hop_by_hop)
+VLIB_NODE_FUNCTION_MULTIARCH (ip6_hop_by_hop_node, ip6_hop_by_hop);
static clib_error_t *
ip6_hop_by_hop_init (vlib_main_t * vm)
{
- ip6_hop_by_hop_main_t * hm = &ip6_hop_by_hop_main;
- memset(hm->options, 0, sizeof(hm->options));
- memset(hm->trace, 0, sizeof(hm->trace));
-
+ ip6_hop_by_hop_main_t *hm = &ip6_hop_by_hop_main;
+ memset (hm->options, 0, sizeof (hm->options));
+ memset (hm->trace, 0, sizeof (hm->trace));
+ hm->next_override = IP6_LOOKUP_NEXT_POP_HOP_BY_HOP;
return (0);
}
VLIB_INIT_FUNCTION (ip6_hop_by_hop_init);
+void
+ip6_hbh_set_next_override (uword next)
+{
+ ip6_hop_by_hop_main_t *hm = &ip6_hop_by_hop_main;
+
+ hm->next_override = next;
+}
+
int
ip6_hbh_register_option (u8 option,
- int options(vlib_buffer_t *b, ip6_header_t *ip, ip6_hop_by_hop_option_t *opt),
- u8 *trace(u8 *s, ip6_hop_by_hop_option_t *opt))
+ int options (vlib_buffer_t * b, ip6_header_t * ip,
+ ip6_hop_by_hop_option_t * opt),
+ u8 * trace (u8 * s, ip6_hop_by_hop_option_t * opt))
{
- ip6_main_t * im = &ip6_main;
- ip6_hop_by_hop_main_t * hm = &ip6_hop_by_hop_main;
+ ip6_main_t *im = &ip6_main;
+ ip6_hop_by_hop_main_t *hm = &ip6_hop_by_hop_main;
ASSERT (option < ARRAY_LEN (hm->options));
int
ip6_hbh_unregister_option (u8 option)
{
- ip6_main_t * im = &ip6_main;
- ip6_hop_by_hop_main_t * hm = &ip6_hop_by_hop_main;
+ ip6_main_t *im = &ip6_main;
+ ip6_hop_by_hop_main_t *hm = &ip6_hop_by_hop_main;
ASSERT (option < ARRAY_LEN (hm->options));
/* Disable global knob if this was the last option configured */
int i;
bool found = false;
- for (i = 0; i < 256; i++) {
- if (hm->options[option]) {
- found = true;
- break;
+ for (i = 0; i < 256; i++)
+ {
+ if (hm->options[option])
+ {
+ found = true;
+ break;
+ }
}
- }
if (!found)
im->hbh_enabled = 0;
static clib_error_t *
ip6_lookup_init (vlib_main_t * vm)
{
- ip6_main_t * im = &ip6_main;
- clib_error_t * error;
+ ip6_main_t *im = &ip6_main;
+ clib_error_t *error;
uword i;
+ if ((error = vlib_call_init_function (vm, vnet_feature_init)))
+ return error;
+
for (i = 0; i < ARRAY_LEN (im->fib_masks); i++)
{
u32 j, i0, i1;
im->fib_masks[i].as_u32[j] = ~0;
if (i1)
- im->fib_masks[i].as_u32[i0] = clib_host_to_net_u32 (pow2_mask (i1) << (32 - i1));
+ im->fib_masks[i].as_u32[i0] =
+ clib_host_to_net_u32 (pow2_mask (i1) << (32 - i1));
}
ip_lookup_init (&im->lookup_main, /* is_ip6 */ 1);
if (im->lookup_table_nbuckets == 0)
im->lookup_table_nbuckets = IP6_FIB_DEFAULT_HASH_NUM_BUCKETS;
- im->lookup_table_nbuckets = 1<< max_log2 (im->lookup_table_nbuckets);
+ im->lookup_table_nbuckets = 1 << max_log2 (im->lookup_table_nbuckets);
if (im->lookup_table_size == 0)
im->lookup_table_size = IP6_FIB_DEFAULT_HASH_MEMORY_SIZE;
-
- BV(clib_bihash_init) (&im->ip6_lookup_table, "ip6 lookup table",
- im->lookup_table_nbuckets,
- im->lookup_table_size);
-
+
+ BV (clib_bihash_init) (&(im->ip6_table[IP6_FIB_TABLE_FWDING].ip6_hash),
+ "ip6 FIB fwding table",
+ im->lookup_table_nbuckets, im->lookup_table_size);
+ BV (clib_bihash_init) (&im->ip6_table[IP6_FIB_TABLE_NON_FWDING].ip6_hash,
+ "ip6 FIB non-fwding table",
+ im->lookup_table_nbuckets, im->lookup_table_size);
+
/* Create FIB with index 0 and table id of 0. */
- find_ip6_fib_by_table_index_or_id (im, /* table id */ 0, IP6_ROUTE_FLAG_TABLE_ID);
+ fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP6, 0);
{
- pg_node_t * pn;
+ pg_node_t *pn;
pn = pg_get_node (ip6_lookup_node.index);
pn->unformat_edit = unformat_pg_ip6_header;
}
memset (&p, 0, sizeof (p));
- p.ip.ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 (0x6 << 28);
- p.ip.payload_length = clib_host_to_net_u16 (sizeof (p)
- - STRUCT_OFFSET_OF (icmp6_neighbor_solicitation_header_t, neighbor));
+ p.ip.ip_version_traffic_class_and_flow_label =
+ clib_host_to_net_u32 (0x6 << 28);
+ p.ip.payload_length =
+ clib_host_to_net_u16 (sizeof (p) -
+ STRUCT_OFFSET_OF
+ (icmp6_neighbor_solicitation_header_t, neighbor));
p.ip.protocol = IP_PROTOCOL_ICMP6;
p.ip.hop_limit = 255;
ip6_set_solicited_node_multicast_address (&p.ip.dst_address, 0);
p.neighbor.icmp.type = ICMP6_neighbor_solicitation;
- p.link_layer_option.header.type = ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address;
- p.link_layer_option.header.n_data_u64s = sizeof (p.link_layer_option) / sizeof (u64);
+ p.link_layer_option.header.type =
+ ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address;
+ p.link_layer_option.header.n_data_u64s =
+ sizeof (p.link_layer_option) / sizeof (u64);
vlib_packet_template_init (vm,
&im->discover_neighbor_packet_template,
"ip6 neighbor discovery");
}
- error = ip6_feature_init (vm, im);
-
return error;
}
static clib_error_t *
add_del_ip6_interface_table (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
{
- vnet_main_t * vnm = vnet_get_main();
- clib_error_t * error = 0;
+ vnet_main_t *vnm = vnet_get_main ();
+ clib_error_t *error = 0;
u32 sw_if_index, table_id;
sw_if_index = ~0;
- if (! unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
+ if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
{
error = clib_error_return (0, "unknown interface `%U'",
format_unformat_error, input);
}
{
- ip6_main_t * im = &ip6_main;
- ip6_fib_t * fib =
- find_ip6_fib_by_table_index_or_id (im, table_id, IP6_ROUTE_FLAG_TABLE_ID);
-
- if (fib)
- {
- vec_validate (im->fib_index_by_sw_if_index, sw_if_index);
- im->fib_index_by_sw_if_index[sw_if_index] = fib->index;
- }
+ u32 fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP6,
+ table_id);
+
+ vec_validate (ip6_main.fib_index_by_sw_if_index, sw_if_index);
+ ip6_main.fib_index_by_sw_if_index[sw_if_index] = fib_index;
}
- done:
+
+done:
return error;
}
-VLIB_CLI_COMMAND (set_interface_ip_table_command, static) = {
+/*?
+ * Place the indicated interface into the supplied IPv6 FIB table (also known
+ * as a VRF). If the FIB table does not exist, this command creates it. To
+ * display the current IPv6 FIB table, use the command '<em>show ip6 fib</em>'.
+ * FIB table will only be displayed if a route has been added to the table, or
+ * an IP Address is assigned to an interface in the table (which adds a route
+ * automatically).
+ *
+ * @note IP addresses added after setting the interface IP table end up in
+ * the indicated FIB table. If the IP address is added prior to adding the
+ * interface to the FIB table, it will NOT be part of the FIB table. Predictable
+ * but potentially counter-intuitive results occur if you provision interface
+ * addresses in multiple FIBs. Upon RX, packets will be processed in the last
+ * IP table ID provisioned. It might be marginally useful to evade source RPF
+ * drops to put an interface address into multiple FIBs.
+ *
+ * @cliexpar
+ * Example of how to add an interface to an IPv6 FIB table (where 2 is the table-id):
+ * @cliexcmd{set interface ip6 table GigabitEthernet2/0/0 2}
+ ?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (set_interface_ip6_table_command, static) =
+{
.path = "set interface ip6 table",
.function = add_del_ip6_interface_table,
- .short_help = "set interface ip6 table <int
fc> <table-id>"
+ .short_help = "set interface ip6 table <int
erface> <table-id>"
};
+/* *INDENT-ON* */
-void
-ip6_link_local_address_from_ethernet_mac_address (ip6_address_t *ip,
- u8 *mac)
+void
+ip6_link_local_address_from_ethernet_mac_address (ip6_address_t * ip,
+ u8 * mac)
{
ip->as_u64[0] = clib_host_to_net_u64 (0xFE80000000000000ULL);
/* Invert the "u" bit */
- ip->as_u8 [8] = mac[0] ^ (1<<1);
- ip->as_u8 [9] = mac[1];
- ip->as_u8 [10] = mac[2];
- ip->as_u8 [11] = 0xFF;
- ip->as_u8 [12] = 0xFE;
- ip->as_u8 [13] = mac[3];
- ip->as_u8 [14] = mac[4];
- ip->as_u8 [15] = mac[5];
+ ip->as_u8[8] = mac[0] ^ (1 << 1);
+ ip->as_u8[9] = mac[1];
+ ip->as_u8[10] = mac[2];
+ ip->as_u8[11] = 0xFF;
+ ip->as_u8[12] = 0xFE;
+ ip->as_u8[13] = mac[3];
+ ip->as_u8[14] = mac[4];
+ ip->as_u8[15] = mac[5];
}
-void
-ip6_ethernet_mac_address_from_link_local_address (u8 *mac,
- ip6_address_t *ip)
+void
+ip6_ethernet_mac_address_from_link_local_address (u8 * mac,
+ ip6_address_t * ip)
{
/* Invert the previously inverted "u" bit */
- mac[0] = ip->as_u8 [8] ^ (1<<1);
- mac[1] = ip->as_u8 [9];
- mac[2] = ip->as_u8 [10];
- mac[3] = ip->as_u8 [13];
- mac[4] = ip->as_u8 [14];
- mac[5] = ip->as_u8 [15];
+ mac[0] = ip->as_u8[8] ^ (1 << 1);
+ mac[1] = ip->as_u8[9];
+ mac[2] = ip->as_u8[10];
+ mac[3] = ip->as_u8[13];
+ mac[4] = ip->as_u8[14];
+ mac[5] = ip->as_u8[15];
}
-static clib_error_t *
+static clib_error_t *
test_ip6_link_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
+ unformat_input_t * input, vlib_cli_command_t * cmd)
{
u8 mac[6];
ip6_address_t _a, *a = &_a;
if (unformat (input, "%U", unformat_ethernet_address, mac))
{
ip6_link_local_address_from_ethernet_mac_address (a, mac);
- vlib_cli_output (vm, "Link local address: %U",
- format_ip6_address, a);
+ vlib_cli_output (vm, "Link local address: %U", format_ip6_address, a);
ip6_ethernet_mac_address_from_link_local_address (mac, a);
vlib_cli_output (vm, "Original MAC address: %U",
- format_ethernet_address, mac);
+ format_ethernet_address, mac);
}
-
+
return 0;
}
-VLIB_CLI_COMMAND (test_link_command, static) = {
+/*?
+ * This command converts the given MAC Address into an IPv6 link-local
+ * address.
+ *
+ * @cliexpar
+ * Example of how to create an IPv6 link-local address:
+ * @cliexstart{test ip6 link 16:d9:e0:91:79:86}
+ * Link local address: fe80::14d9:e0ff:fe91:7986
+ * Original MAC address: 16:d9:e0:91:79:86
+ * @cliexend
+?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (test_link_command, static) =
+{
.path = "test ip6 link",
- .function = test_ip6_link_command_fn,
+ .function = test_ip6_link_command_fn,
.short_help = "test ip6 link <mac-address>",
};
+/* *INDENT-ON* */
-int vnet_set_ip6_flow_hash (u32 table_id, u32 flow_hash_config)
+int
+vnet_set_ip6_flow_hash (u32 table_id, u32 flow_hash_config)
{
- ip6_main_t * im6 = &ip6_main;
- ip6_fib_t * fib;
- uword * p = hash_get (im6->fib_index_by_table_id, table_id);
+ ip6_main_t *im6 = &ip6_main;
+ ip6_fib_t *fib;
+ uword *p = hash_get (im6->fib_index_by_table_id, table_id);
if (p == 0)
return -1;
- fib = vec_elt_at_index (im6->fibs, p[0]);
+ fib = ip6_fib_get (p[0]);
fib->flow_hash_config = flow_hash_config;
return 1;
static clib_error_t *
set_ip6_flow_hash_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
{
int matched = 0;
u32 table_id = 0;
u32 flow_hash_config = 0;
int rv;
- while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) {
- if (unformat (input, "table %d", &table_id))
- matched = 1;
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "table %d", &table_id))
+ matched = 1;
#define _(a,v) \
else if (unformat (input, #a)) { flow_hash_config |= v; matched=1;}
- foreach_flow_hash_bit
+ foreach_flow_hash_bit
#undef _
- else break;
- }
+ else
+ break;
+ }
if (matched == 0)
return clib_error_return (0, "unknown input `%U'",
- format_unformat_error, input);
-
+ format_unformat_error, input);
+
rv = vnet_set_ip6_flow_hash (table_id, flow_hash_config);
switch (rv)
{
case -1:
return clib_error_return (0, "no such FIB table %d", table_id);
-
+
default:
clib_warning ("BUG: illegal flow hash config 0x%x", flow_hash_config);
break;
}
-
+
return 0;
}
-VLIB_CLI_COMMAND (set_ip6_flow_hash_command, static) = {
- .path = "set ip6 flow-hash",
- .short_help =
- "set ip table flow-hash table <fib-id> src dst sport dport proto reverse",
- .function = set_ip6_flow_hash_command_fn,
+/*?
+ * Configure the set of IPv6 fields used by the flow hash.
+ *
+ * @cliexpar
+ * @parblock
+ * Example of how to set the flow hash on a given table:
+ * @cliexcmd{set ip6 flow-hash table 8 dst sport dport proto}
+ *
+ * Example of display the configured flow hash:
+ * @cliexstart{show ip6 fib}
+ * ipv6-VRF:0, fib_index 0, flow hash: src dst sport dport proto
+ * @::/0
+ * unicast-ip6-chain
+ * [@0]: dpo-load-balance: [index:5 buckets:1 uRPF:5 to:[0:0]]
+ * [0] [@0]: dpo-drop ip6
+ * fe80::/10
+ * unicast-ip6-chain
+ * [@0]: dpo-load-balance: [index:10 buckets:1 uRPF:10 to:[0:0]]
+ * [0] [@2]: dpo-receive
+ * ff02::1/128
+ * unicast-ip6-chain
+ * [@0]: dpo-load-balance: [index:8 buckets:1 uRPF:8 to:[0:0]]
+ * [0] [@2]: dpo-receive
+ * ff02::2/128
+ * unicast-ip6-chain
+ * [@0]: dpo-load-balance: [index:7 buckets:1 uRPF:7 to:[0:0]]
+ * [0] [@2]: dpo-receive
+ * ff02::16/128
+ * unicast-ip6-chain
+ * [@0]: dpo-load-balance: [index:9 buckets:1 uRPF:9 to:[0:0]]
+ * [0] [@2]: dpo-receive
+ * ff02::1:ff00:0/104
+ * unicast-ip6-chain
+ * [@0]: dpo-load-balance: [index:6 buckets:1 uRPF:6 to:[0:0]]
+ * [0] [@2]: dpo-receive
+ * ipv6-VRF:8, fib_index 1, flow hash: dst sport dport proto
+ * @::/0
+ * unicast-ip6-chain
+ * [@0]: dpo-load-balance: [index:21 buckets:1 uRPF:20 to:[0:0]]
+ * [0] [@0]: dpo-drop ip6
+ * @::a:1:1:0:4/126
+ * unicast-ip6-chain
+ * [@0]: dpo-load-balance: [index:27 buckets:1 uRPF:26 to:[0:0]]
+ * [0] [@4]: ipv6-glean: af_packet0
+ * @::a:1:1:0:7/128
+ * unicast-ip6-chain
+ * [@0]: dpo-load-balance: [index:28 buckets:1 uRPF:27 to:[0:0]]
+ * [0] [@2]: dpo-receive: @::a:1:1:0:7 on af_packet0
+ * fe80::/10
+ * unicast-ip6-chain
+ * [@0]: dpo-load-balance: [index:26 buckets:1 uRPF:25 to:[0:0]]
+ * [0] [@2]: dpo-receive
+ * fe80::fe:3eff:fe3e:9222/128
+ * unicast-ip6-chain
+ * [@0]: dpo-load-balance: [index:29 buckets:1 uRPF:28 to:[0:0]]
+ * [0] [@2]: dpo-receive: fe80::fe:3eff:fe3e:9222 on af_packet0
+ * ff02::1/128
+ * unicast-ip6-chain
+ * [@0]: dpo-load-balance: [index:24 buckets:1 uRPF:23 to:[0:0]]
+ * [0] [@2]: dpo-receive
+ * ff02::2/128
+ * unicast-ip6-chain
+ * [@0]: dpo-load-balance: [index:23 buckets:1 uRPF:22 to:[0:0]]
+ * [0] [@2]: dpo-receive
+ * ff02::16/128
+ * unicast-ip6-chain
+ * [@0]: dpo-load-balance: [index:25 buckets:1 uRPF:24 to:[0:0]]
+ * [0] [@2]: dpo-receive
+ * ff02::1:ff00:0/104
+ * unicast-ip6-chain
+ * [@0]: dpo-load-balance: [index:22 buckets:1 uRPF:21 to:[0:0]]
+ * [0] [@2]: dpo-receive
+ * @cliexend
+ * @endparblock
+?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (set_ip6_flow_hash_command, static) =
+{
+ .path = "set ip6 flow-hash",
+ .short_help =
+ "set ip6 flow-hash table <table-id> [src] [dst] [sport] [dport] [proto] [reverse]",
+ .function = set_ip6_flow_hash_command_fn,
};
+/* *INDENT-ON* */
static clib_error_t *
show_ip6_local_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
+ unformat_input_t * input, vlib_cli_command_t * cmd)
{
- ip6_main_t * im = &ip6_main;
- ip_lookup_main_t * lm = &im->lookup_main;
+ ip6_main_t *im = &ip6_main;
+ ip_lookup_main_t *lm = &im->lookup_main;
int i;
-
+
vlib_cli_output (vm, "Protocols handled by ip6_local");
- for (i = 0; i < ARRAY_LEN(lm->local_next_by_ip_protocol); i++)
+ for (i = 0; i < ARRAY_LEN (lm->local_next_by_ip_protocol); i++)
{
if (lm->local_next_by_ip_protocol[i] != IP_LOCAL_NEXT_PUNT)
- vlib_cli_output (vm, "%d", i);
+ vlib_cli_output (vm, "%d", i);
}
return 0;
}
-VLIB_CLI_COMMAND (show_ip_local, static) = {
+/*?
+ * Display the set of protocols handled by the local IPv6 stack.
+ *
+ * @cliexpar
+ * Example of how to display local protocol table:
+ * @cliexstart{show ip6 local}
+ * Protocols handled by ip6_local
+ * 17
+ * 43
+ * 58
+ * 115
+ * @cliexend
+?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (show_ip6_local, static) =
+{
.path = "show ip6 local",
.function = show_ip6_local_command_fn,
- .short_help = "Show ip6 local protocol table",
+ .short_help = "show ip6 local",
};
+/* *INDENT-ON* */
-int vnet_set_ip6_classify_intfc (vlib_main_t * vm, u32 sw_if_index,
- u32 table_index)
+int
+vnet_set_ip6_classify_intfc (vlib_main_t * vm, u32 sw_if_index,
+ u32 table_index)
{
- vnet_main_t * vnm = vnet_get_main();
- vnet_interface_main_t * im = &vnm->interface_main;
- ip6_main_t * ipm = &ip6_main;
- ip_lookup_main_t * lm = &ipm->lookup_main;
- vnet_classify_main_t * cm = &vnet_classify_main;
+ vnet_main_t *vnm = vnet_get_main ();
+ vnet_interface_main_t *im = &vnm->interface_main;
+ ip6_main_t *ipm = &ip6_main;
+ ip_lookup_main_t *lm = &ipm->lookup_main;
+ vnet_classify_main_t *cm = &vnet_classify_main;
+ ip6_address_t *if_addr;
if (pool_is_free_index (im->sw_interfaces, sw_if_index))
return VNET_API_ERROR_NO_MATCHING_INTERFACE;
return VNET_API_ERROR_NO_SUCH_ENTRY;
vec_validate (lm->classify_table_index_by_sw_if_index, sw_if_index);
- lm->classify_table_index_by_sw_if_index [sw_if_index] = table_index;
+ lm->classify_table_index_by_sw_if_index[sw_if_index] = table_index;
+
+ if_addr = ip6_interface_first_address (ipm, sw_if_index, NULL);
+
+ if (NULL != if_addr)
+ {
+ fib_prefix_t pfx = {
+ .fp_len = 128,
+ .fp_proto = FIB_PROTOCOL_IP6,
+ .fp_addr.ip6 = *if_addr,
+ };
+ u32 fib_index;
+
+ fib_index = fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
+ sw_if_index);
+
+
+ if (table_index != (u32) ~ 0)
+ {
+ dpo_id_t dpo = DPO_INVALID;
+
+ dpo_set (&dpo,
+ DPO_CLASSIFY,
+ DPO_PROTO_IP6,
+ classify_dpo_create (DPO_PROTO_IP6, table_index));
+
+ fib_table_entry_special_dpo_add (fib_index,
+ &pfx,
+ FIB_SOURCE_CLASSIFY,
+ FIB_ENTRY_FLAG_NONE, &dpo);
+ dpo_reset (&dpo);
+ }
+ else
+ {
+ fib_table_entry_special_remove (fib_index,
+ &pfx, FIB_SOURCE_CLASSIFY);
+ }
+ }
return 0;
}
static clib_error_t *
set_ip6_classify_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
{
u32 table_index = ~0;
int table_index_set = 0;
u32 sw_if_index = ~0;
int rv;
-
- while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) {
- if (unformat (input, "table-index %d", &table_index))
- table_index_set = 1;
- else if (unformat (input, "intfc %U", unformat_vnet_sw_interface,
- vnet_get_main(), &sw_if_index))
- ;
- else
- break;
- }
-
+
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "table-index %d", &table_index))
+ table_index_set = 1;
+ else if (unformat (input, "intfc %U", unformat_vnet_sw_interface,
+ vnet_get_main (), &sw_if_index))
+ ;
+ else
+ break;
+ }
+
if (table_index_set == 0)
- return clib_error_return (0, "classify table-index must be specified");
-
+ return clib_error_return (0, "classify table-index must be specified");
+
if (sw_if_index == ~0)
return clib_error_return (0, "interface / subif must be specified");
return 0;
}
-VLIB_CLI_COMMAND (set_ip6_classify_command, static) = {
- .path = "set ip6 classify",
- .short_help =
- "set ip6 classify intfc <int> table-index <index>",
- .function = set_ip6_classify_command_fn,
+/*?
+ * Assign a classification table to an interface. The classification
+ * table is created using the '<em>classify table</em>' and '<em>classify session</em>'
+ * commands. Once the table is create, use this command to filter packets
+ * on an interface.
+ *
+ * @cliexpar
+ * Example of how to assign a classification table to an interface:
+ * @cliexcmd{set ip6 classify intfc GigabitEthernet2/0/0 table-index 1}
+?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (set_ip6_classify_command, static) =
+{
+ .path = "set ip6 classify",
+ .short_help =
+ "set ip6 classify intfc <interface> table-index <classify-idx>",
+ .function = set_ip6_classify_command_fn,
};
+/* *INDENT-ON* */
static clib_error_t *
ip6_config (vlib_main_t * vm, unformat_input_t * input)
{
- ip6_main_t * im = &ip6_main;
+ ip6_main_t *im = &ip6_main;
uword heapsize = 0;
u32 tmp;
u32 nbuckets = 0;
- while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) {
- if (unformat (input, "hash-buckets %d", &tmp))
- nbuckets = tmp;
- else if (unformat (input, "heap-size %dm", &tmp))
- heapsize = ((u64)tmp) << 20;
- else if (unformat (input, "heap-size %dM", &tmp))
- heapsize = ((u64)tmp) << 20;
- else if (unformat (input, "heap-size %dg", &tmp))
- heapsize = ((u64)tmp) << 30;
- else if (unformat (input, "heap-size %dG", &tmp))
- heapsize = ((u64)tmp) << 30;
- else
- return clib_error_return (0, "unknown input '%U'",
- format_unformat_error, input);
- }
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "hash-buckets %d", &tmp))
+ nbuckets = tmp;
+ else if (unformat (input, "heap-size %dm", &tmp))
+ heapsize = ((u64) tmp) << 20;
+ else if (unformat (input, "heap-size %dM", &tmp))
+ heapsize = ((u64) tmp) << 20;
+ else if (unformat (input, "heap-size %dg", &tmp))
+ heapsize = ((u64) tmp) << 30;
+ else if (unformat (input, "heap-size %dG", &tmp))
+ heapsize = ((u64) tmp) << 30;
+ else
+ return clib_error_return (0, "unknown input '%U'",
+ format_unformat_error, input);
+ }
im->lookup_table_nbuckets = nbuckets;
im->lookup_table_size = heapsize;
VLIB_EARLY_CONFIG_FUNCTION (ip6_config, "ip6");
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
Code Review / vpp.git / blobdiff