#include <vnet/ppp/ppp.h>
#include <vnet/srp/srp.h> /* for srp_hw_interface_class */
#include <vnet/api_errno.h> /* for API error numbers */
-
-/* This is really, really simple but stupid fib. */
-u32
-ip4_fib_lookup_with_table (ip4_main_t * im, u32 fib_index,
- ip4_address_t * dst,
- u32 disable_default_route)
-{
- ip_lookup_main_t * lm = &im->lookup_main;
- ip4_fib_t * fib = vec_elt_at_index (im->fibs, fib_index);
- uword * p, * hash, key;
- i32 i, i_min, dst_address, ai;
-
- i_min = disable_default_route ? 1 : 0;
- dst_address = clib_mem_unaligned (&dst->data_u32, u32);
- for (i = ARRAY_LEN (fib->adj_index_by_dst_address) - 1; i >= i_min; i--)
- {
- hash = fib->adj_index_by_dst_address[i];
- if (! hash)
- continue;
-
- key = dst_address & im->fib_masks[i];
- if ((p = hash_get (hash, key)) != 0)
- {
- ai = p[0];
- goto done;
- }
- }
-
- /* Nothing matches in table. */
- ai = lm->miss_adj_index;
-
- done:
- return ai;
-}
-
-static ip4_fib_t *
-create_fib_with_table_id (ip4_main_t * im, u32 table_id)
-{
- ip4_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;
- fib->fwd_classify_table_index = ~0;
- fib->rev_classify_table_index = ~0;
- ip4_mtrie_init (&fib->mtrie);
- return fib;
-}
-
-ip4_fib_t *
-find_ip4_fib_by_table_index_or_id (ip4_main_t * im,
- u32 table_index_or_id, u32 flags)
-{
- uword * p, fib_index;
-
- fib_index = table_index_or_id;
- if (! (flags & IP4_ROUTE_FLAG_FIB_INDEX))
- {
- 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);
-}
-
-static void
-ip4_fib_init_adj_index_by_dst_address (ip_lookup_main_t * lm,
- ip4_fib_t * fib,
- u32 address_length)
-{
- hash_t * h;
- uword max_index;
-
- ASSERT (lm->fib_result_n_bytes >= sizeof (uword));
- lm->fib_result_n_words = round_pow2 (lm->fib_result_n_bytes, sizeof (uword)) / sizeof (uword);
-
- fib->adj_index_by_dst_address[address_length] =
- hash_create (32 /* elts */, lm->fib_result_n_words * sizeof (uword));
-
- hash_set_flags (fib->adj_index_by_dst_address[address_length],
- HASH_FLAG_NO_AUTO_SHRINK);
-
- h = hash_header (fib->adj_index_by_dst_address[address_length]);
- max_index = (hash_value_bytes (h) / sizeof (fib->new_hash_values[0])) - 1;
-
- /* Initialize new/old hash value vectors. */
- vec_validate_init_empty (fib->new_hash_values, max_index, ~0);
- vec_validate_init_empty (fib->old_hash_values, max_index, ~0);
-}
-
-static void
-ip4_fib_set_adj_index (ip4_main_t * im,
- ip4_fib_t * fib,
- u32 flags,
- u32 dst_address_u32,
- u32 dst_address_length,
- u32 adj_index)
-{
- ip_lookup_main_t * lm = &im->lookup_main;
- uword * hash;
-
- if (vec_bytes(fib->old_hash_values))
- memset (fib->old_hash_values, ~0, vec_bytes (fib->old_hash_values));
- if (vec_bytes(fib->new_hash_values))
- memset (fib->new_hash_values, ~0, vec_bytes (fib->new_hash_values));
- fib->new_hash_values[0] = adj_index;
-
- /* Make sure adj index is valid. */
- if (CLIB_DEBUG > 0)
- (void) ip_get_adjacency (lm, adj_index);
-
- hash = fib->adj_index_by_dst_address[dst_address_length];
-
- hash = _hash_set3 (hash, dst_address_u32,
- fib->new_hash_values,
- fib->old_hash_values);
-
- fib->adj_index_by_dst_address[dst_address_length] = hash;
-
- if (vec_len (im->add_del_route_callbacks) > 0)
- {
- ip4_add_del_route_callback_t * cb;
- ip4_address_t d;
- uword * p;
-
- d.data_u32 = dst_address_u32;
- vec_foreach (cb, im->add_del_route_callbacks)
- if ((flags & cb->required_flags) == cb->required_flags)
- cb->function (im, cb->function_opaque,
- fib, flags,
- &d, dst_address_length,
- fib->old_hash_values,
- fib->new_hash_values);
-
- p = hash_get (hash, dst_address_u32);
- clib_memcpy (p, fib->new_hash_values, vec_bytes (fib->new_hash_values));
- }
-}
-
-void ip4_add_del_route (ip4_main_t * im, ip4_add_del_route_args_t * a)
-{
- ip_lookup_main_t * lm = &im->lookup_main;
- ip4_fib_t * fib;
- u32 dst_address, dst_address_length, adj_index, old_adj_index;
- uword * hash, is_del;
- ip4_add_del_route_callback_t * cb;
-
- /* 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.data_u32;
- dst_address_length = a->dst_address_length;
- fib = find_ip4_fib_by_table_index_or_id (im, a->table_index_or_table_id, a->flags);
-
- ASSERT (dst_address_length < ARRAY_LEN (im->fib_masks));
- dst_address &= im->fib_masks[dst_address_length];
-
- if (! fib->adj_index_by_dst_address[dst_address_length])
- ip4_fib_init_adj_index_by_dst_address (lm, fib, dst_address_length);
-
- hash = fib->adj_index_by_dst_address[dst_address_length];
-
- is_del = (a->flags & IP4_ROUTE_FLAG_DEL) != 0;
-
- if (is_del)
- {
- fib->old_hash_values[0] = ~0;
- hash = _hash_unset (hash, dst_address, fib->old_hash_values);
- fib->adj_index_by_dst_address[dst_address_length] = hash;
-
- if (vec_len (im->add_del_route_callbacks) > 0
- && fib->old_hash_values[0] != ~0) /* make sure destination was found in hash */
- {
- fib->new_hash_values[0] = ~0;
- vec_foreach (cb, im->add_del_route_callbacks)
- if ((a->flags & cb->required_flags) == cb->required_flags)
- cb->function (im, cb->function_opaque,
- fib, a->flags,
- &a->dst_address, dst_address_length,
- fib->old_hash_values,
- fib->new_hash_values);
- }
- }
- else
- ip4_fib_set_adj_index (im, fib, a->flags, dst_address, dst_address_length,
- adj_index);
-
- old_adj_index = fib->old_hash_values[0];
-
- /* Avoid spurious reference count increments */
- if (old_adj_index == adj_index
- && adj_index != ~0
- && !(a->flags & IP4_ROUTE_FLAG_KEEP_OLD_ADJACENCY))
- {
- ip_adjacency_t * adj = ip_get_adjacency (lm, adj_index);
- if (adj->share_count > 0)
- adj->share_count --;
- }
-
- ip4_fib_mtrie_add_del_route (fib, a->dst_address, dst_address_length,
- is_del ? old_adj_index : adj_index,
- is_del);
-
- /* Delete old adjacency index if present and changed. */
- if (! (a->flags & IP4_ROUTE_FLAG_KEEP_OLD_ADJACENCY)
- && old_adj_index != ~0
- && old_adj_index != adj_index)
- ip_del_adjacency (lm, old_adj_index);
-}
-
-void
-ip4_add_del_route_next_hop (ip4_main_t * im,
- u32 flags,
- ip4_address_t * dst_address,
- u32 dst_address_length,
- ip4_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;
- ip4_fib_t * fib;
- u32 dst_address_u32, old_mp_adj_index, new_mp_adj_index;
- u32 dst_adj_index, nh_adj_index;
- uword * dst_hash, * dst_result;
- uword * nh_hash, * nh_result;
- ip_adjacency_t * dst_adj;
- ip_multipath_adjacency_t * old_mp, * new_mp;
- int is_del = (flags & IP4_ROUTE_FLAG_DEL) != 0;
- int is_interface_next_hop;
- clib_error_t * error = 0;
-
- 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. */
- is_interface_next_hop = next_hop->data_u32 == 0;
- if (adj_index == (u32)~0)
- {
- 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);
- ip4_adjacency_set_interface_route (vnm, adj, next_hop_sw_if_index, /* if_address_index */ ~0);
- ip_call_add_del_adjacency_callbacks (lm, nh_adj_index, /* is_del */ 0);
- hash_set (im->interface_route_adj_index_by_sw_if_index, next_hop_sw_if_index, nh_adj_index);
- }
- }
- else
- {
- nh_hash = fib->adj_index_by_dst_address[32];
- nh_result = hash_get (nh_hash, next_hop->data_u32);
-
- /* Next hop must be known. */
- if (! nh_result)
- {
- ip_adjacency_t * adj;
-
- nh_adj_index = ip4_fib_lookup_with_table (im, fib_index,
- next_hop, 0);
- adj = ip_get_adjacency (lm, nh_adj_index);
- /* if ARP interface adjacencty is present, we need to
- install ARP adjaceny for specific next hop */
- if (adj->lookup_next_index == IP_LOOKUP_NEXT_ARP &&
- adj->arp.next_hop.ip4.as_u32 == 0)
- {
- nh_adj_index = vnet_arp_glean_add(fib_index, next_hop);
- }
- else
- {
- /* Next hop is not known, so create indirect adj */
- ip_adjacency_t add_adj;
- add_adj.lookup_next_index = IP_LOOKUP_NEXT_INDIRECT;
- add_adj.indirect.next_hop.ip4.as_u32 = next_hop->as_u32;
- add_adj.explicit_fib_index = explicit_fib_index;
- ip_add_adjacency (lm, &add_adj, 1, &nh_adj_index);
- }
- }
- else
- nh_adj_index = *nh_result;
- }
- }
- else
- {
- nh_adj_index = adj_index;
- }
- ASSERT (dst_address_length < ARRAY_LEN (im->fib_masks));
- dst_address_u32 = dst_address->data_u32 & im->fib_masks[dst_address_length];
-
- dst_hash = fib->adj_index_by_dst_address[dst_address_length];
- dst_result = hash_get (dst_hash, dst_address_u32);
- if (dst_result)
- {
- dst_adj_index = dst_result[0];
- 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_ip4_address, dst_address,
- dst_address_length);
- goto done;
- }
-
- dst_adj_index = ~0;
- dst_adj = 0;
- }
-
- /* Ignore adds of X/32 with next hop of X. */
- if (! is_del
- && dst_address_length == 32
- && dst_address->data_u32 == next_hop->data_u32
- && adj_index != (u32)~0)
- {
- vnm->api_errno = VNET_API_ERROR_PREFIX_MATCHES_NEXT_HOP;
- error = clib_error_return (0, "prefix matches next hop %U/%d",
- format_ip4_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 new adjacency */
- ip4_add_del_route_args_t a;
- a.table_index_or_table_id = fib_index;
- a.flags = ((is_del ? IP4_ROUTE_FLAG_DEL : IP4_ROUTE_FLAG_ADD)
- | IP4_ROUTE_FLAG_FIB_INDEX
- | IP4_ROUTE_FLAG_KEEP_OLD_ADJACENCY
- | (flags & (IP4_ROUTE_FLAG_NO_REDISTRIBUTE
- | IP4_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;
-
- ip4_add_del_route (im, &a);
-
- goto done;
- }
-
- old_mp_adj_index = dst_adj ? dst_adj->heap_handle : ~0;
-
- if (! ip_multipath_adjacency_add_del_next_hop
- (lm, is_del,
- old_mp_adj_index,
- 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_ip4_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)
- {
- ip4_add_del_route_args_t a;
- a.table_index_or_table_id = fib_index;
- a.flags = ((is_del && ! new_mp ? IP4_ROUTE_FLAG_DEL : IP4_ROUTE_FLAG_ADD)
- | IP4_ROUTE_FLAG_FIB_INDEX
- | IP4_ROUTE_FLAG_KEEP_OLD_ADJACENCY
- | (flags & (IP4_ROUTE_FLAG_NO_REDISTRIBUTE | IP4_ROUTE_FLAG_NOT_LAST_IN_GROUP)));
- 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;
-
- ip4_add_del_route (im, &a);
- }
-
- done:
- if (error)
- clib_error_report (error);
-}
-
-void *
-ip4_get_route (ip4_main_t * im,
- u32 table_index_or_table_id,
- u32 flags,
- u8 * address,
- u32 address_length)
-{
- ip4_fib_t * fib = find_ip4_fib_by_table_index_or_id (im, table_index_or_table_id, flags);
- u32 dst_address = * (u32 *) address;
- uword * hash, * p;
-
- ASSERT (address_length < ARRAY_LEN (im->fib_masks));
- dst_address &= im->fib_masks[address_length];
-
- hash = fib->adj_index_by_dst_address[address_length];
- p = hash_get (hash, dst_address);
- return (void *) p;
-}
+#include <vnet/fib/fib_table.h> /* for FIB table and entry creation */
+#include <vnet/fib/fib_entry.h> /* for FIB table and entry creation */
+#include <vnet/fib/fib_urpf_list.h> /* for FIB uRPF check */
+#include <vnet/fib/ip4_fib.h>
+#include <vnet/dpo/load_balance.h>
+#include <vnet/dpo/classify_dpo.h>
void
-ip4_foreach_matching_route (ip4_main_t * im,
- u32 table_index_or_table_id,
- u32 flags,
- ip4_address_t * address,
- u32 address_length,
- ip4_address_t ** results,
- u8 ** result_lengths)
-{
- ip4_fib_t * fib = find_ip4_fib_by_table_index_or_id (im, table_index_or_table_id, flags);
- u32 dst_address = address->data_u32;
- u32 this_length = address_length;
-
- if (*results)
- _vec_len (*results) = 0;
- if (*result_lengths)
- _vec_len (*result_lengths) = 0;
-
- while (this_length <= 32 && vec_len (results) == 0)
- {
- uword k, v;
- hash_foreach (k, v, fib->adj_index_by_dst_address[this_length], ({
- if (0 == ((k ^ dst_address) & im->fib_masks[address_length]))
- {
- ip4_address_t a;
- a.data_u32 = k;
- vec_add1 (*results, a);
- vec_add1 (*result_lengths, this_length);
- }
- }));
-
- this_length++;
- }
-}
-
-void ip4_maybe_remap_adjacencies (ip4_main_t * im,
- u32 table_index_or_table_id,
- u32 flags)
-{
- ip4_fib_t * fib = find_ip4_fib_by_table_index_or_id (im, table_index_or_table_id, flags);
- ip_lookup_main_t * lm = &im->lookup_main;
- u32 i, l;
- ip4_address_t a;
- ip4_add_del_route_callback_t * cb;
- static ip4_address_t * to_delete;
-
- if (lm->n_adjacency_remaps == 0)
- return;
-
- for (l = 0; l <= 32; l++)
- {
- hash_pair_t * p;
- uword * hash = fib->adj_index_by_dst_address[l];
-
- if (hash_elts (hash) == 0)
- continue;
-
- if (to_delete)
- _vec_len (to_delete) = 0;
-
- hash_foreach_pair (p, hash, ({
- u32 adj_index = p->value[0];
- u32 m = vec_elt (lm->adjacency_remap_table, adj_index);
-
- if (m)
- {
- /* Record destination address from hash key. */
- a.data_u32 = p->key;
-
- /* New adjacency points to nothing: so delete prefix. */
- if (m == ~0)
- vec_add1 (to_delete, a);
- else
- {
- /* Remap to new adjacency. */
- clib_memcpy (fib->old_hash_values, p->value, vec_bytes (fib->old_hash_values));
-
- /* Set new adjacency value. */
- fib->new_hash_values[0] = p->value[0] = m - 1;
-
- vec_foreach (cb, im->add_del_route_callbacks)
- if ((flags & cb->required_flags) == cb->required_flags)
- cb->function (im, cb->function_opaque,
- fib, flags | IP4_ROUTE_FLAG_ADD,
- &a, l,
- fib->old_hash_values,
- fib->new_hash_values);
- }
- }
- }));
-
- fib->new_hash_values[0] = ~0;
- for (i = 0; i < vec_len (to_delete); i++)
- {
- hash = _hash_unset (hash, to_delete[i].data_u32, fib->old_hash_values);
- vec_foreach (cb, im->add_del_route_callbacks)
- if ((flags & cb->required_flags) == cb->required_flags)
- cb->function (im, cb->function_opaque,
- fib, flags | IP4_ROUTE_FLAG_DEL,
- &a, l,
- fib->old_hash_values,
- fib->new_hash_values);
- }
- }
-
- /* Also remap adjacencies in mtrie. */
- ip4_mtrie_maybe_remap_adjacencies (lm, &fib->mtrie);
-
- /* Reset mapping table. */
- vec_zero (lm->adjacency_remap_table);
-
- /* All remaps have been performed. */
- lm->n_adjacency_remaps = 0;
-}
-
-void ip4_delete_matching_routes (ip4_main_t * im,
- u32 table_index_or_table_id,
- u32 flags,
- ip4_address_t * address,
- u32 address_length)
-{
- static ip4_address_t * matching_addresses;
- static u8 * matching_address_lengths;
- u32 l, i;
- ip4_add_del_route_args_t a;
-
- a.flags = IP4_ROUTE_FLAG_DEL | IP4_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 <= 32; l++)
- {
- ip4_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];
- ip4_add_del_route (im, &a);
- }
- }
-
- ip4_maybe_remap_adjacencies (im, table_index_or_table_id, flags);
-}
+ip4_forward_next_trace (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame,
+ vlib_rx_or_tx_t which_adj_index);
always_inline uword
ip4_lookup_inline (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame,
- int lookup_for_responses_to_locally_received_packets,
- int is_indirect)
+ int lookup_for_responses_to_locally_received_packets)
{
ip4_main_t * im = &ip4_main;
- ip_lookup_main_t * lm = &im->lookup_main;
- vlib_combined_counter_main_t * cm = &im->lookup_main.adjacency_counters;
+ 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();
to_next, n_left_to_next);
while (n_left_from >= 4 && n_left_to_next >= 2)
- {
- vlib_buffer_t * p0, * p1;
- ip4_header_t * ip0, * ip1;
- __attribute__((unused)) tcp_header_t * tcp0, * tcp1;
- ip_lookup_next_t next0, next1;
- ip_adjacency_t * adj0, * adj1;
- ip4_fib_mtrie_t * mtrie0, * mtrie1;
- ip4_fib_mtrie_leaf_t leaf0, leaf1;
- ip4_address_t * dst_addr0, *dst_addr1;
- __attribute__((unused)) u32 pi0, fib_index0, adj_index0, is_tcp_udp0;
- __attribute__((unused)) u32 pi1, fib_index1, adj_index1, is_tcp_udp1;
- u32 flow_hash_config0, flow_hash_config1;
+ {
+ vlib_buffer_t * p0, * p1;
+ ip4_header_t * ip0, * ip1;
+ __attribute__((unused)) tcp_header_t * tcp0, * tcp1;
+ ip_lookup_next_t next0, next1;
+ const load_balance_t * lb0, * lb1;
+ ip4_fib_mtrie_t * mtrie0, * mtrie1;
+ ip4_fib_mtrie_leaf_t leaf0, leaf1;
+ ip4_address_t * dst_addr0, *dst_addr1;
+ __attribute__((unused)) u32 pi0, fib_index0, lb_index0, is_tcp_udp0;
+ __attribute__((unused)) u32 pi1, fib_index1, lb_index1, is_tcp_udp1;
+ flow_hash_config_t flow_hash_config0, flow_hash_config1;
u32 hash_c0, hash_c1;
- u32 wrong_next;
+ u32 wrong_next;
+ const dpo_id_t *dpo0, *dpo1;
- /* Prefetch next iteration. */
- {
- vlib_buffer_t * p2, * p3;
+ /* Prefetch next iteration. */
+ {
+ vlib_buffer_t * p2, * p3;
- p2 = vlib_get_buffer (vm, from[2]);
- p3 = vlib_get_buffer (vm, from[3]);
+ 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);
+ vlib_prefetch_buffer_header (p2, LOAD);
+ vlib_prefetch_buffer_header (p3, LOAD);
- CLIB_PREFETCH (p2->data, sizeof (ip0[0]), LOAD);
- CLIB_PREFETCH (p3->data, sizeof (ip0[0]), LOAD);
- }
+ CLIB_PREFETCH (p2->data, sizeof (ip0[0]), LOAD);
+ CLIB_PREFETCH (p3->data, sizeof (ip0[0]), LOAD);
+ }
- pi0 = to_next[0] = from[0];
- pi1 = to_next[1] = from[1];
+ pi0 = to_next[0] = from[0];
+ pi1 = to_next[1] = from[1];
- p0 = vlib_get_buffer (vm, pi0);
- p1 = vlib_get_buffer (vm, pi1);
+ p0 = vlib_get_buffer (vm, pi0);
+ p1 = vlib_get_buffer (vm, pi1);
- ip0 = vlib_buffer_get_current (p0);
- ip1 = vlib_buffer_get_current (p1);
+ 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.ip4;
- dst_addr1 = &iadj1->indirect.next_hop.ip4;
- }
- 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];
- if (! lookup_for_responses_to_locally_received_packets)
- {
- mtrie0 = &vec_elt_at_index (im->fibs, fib_index0)->mtrie;
- mtrie1 = &vec_elt_at_index (im->fibs, fib_index1)->mtrie;
-
- leaf0 = leaf1 = IP4_FIB_MTRIE_LEAF_ROOT;
-
- leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 0);
- leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, dst_addr1, 0);
- }
-
- tcp0 = (void *) (ip0 + 1);
- tcp1 = (void *) (ip1 + 1);
-
- is_tcp_udp0 = (ip0->protocol == IP_PROTOCOL_TCP
- || ip0->protocol == IP_PROTOCOL_UDP);
- is_tcp_udp1 = (ip1->protocol == IP_PROTOCOL_TCP
- || ip1->protocol == IP_PROTOCOL_UDP);
-
- if (! lookup_for_responses_to_locally_received_packets)
- {
- leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 1);
- leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, dst_addr1, 1);
- }
-
- if (! lookup_for_responses_to_locally_received_packets)
- {
- leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 2);
- leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, dst_addr1, 2);
- }
-
- if (! lookup_for_responses_to_locally_received_packets)
- {
- leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 3);
- leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, dst_addr1, 3);
- }
-
- if (lookup_for_responses_to_locally_received_packets)
- {
- adj_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_RX];
- adj_index1 = vnet_buffer (p1)->ip.adj_index[VLIB_RX];
- }
- else
- {
- /* Handle default route. */
- leaf0 = (leaf0 == IP4_FIB_MTRIE_LEAF_EMPTY ? mtrie0->default_leaf : leaf0);
- leaf1 = (leaf1 == IP4_FIB_MTRIE_LEAF_EMPTY ? mtrie1->default_leaf : leaf1);
-
- adj_index0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0);
- adj_index1 = ip4_fib_mtrie_leaf_get_adj_index (leaf1);
- }
-
- ASSERT (adj_index0 == ip4_fib_lookup_with_table (im, fib_index0,
- dst_addr0,
- /* no_default_route */ 0));
- ASSERT (adj_index1 == ip4_fib_lookup_with_table (im, fib_index1,
- dst_addr1,
- /* no_default_route */ 0));
- adj0 = ip_get_adjacency (lm, adj_index0);
- adj1 = ip_get_adjacency (lm, adj_index1);
-
- next0 = adj0->lookup_next_index;
- next1 = adj1->lookup_next_index;
-
- /* Use flow hash to compute multipath adjacency. */
+ if (! lookup_for_responses_to_locally_received_packets)
+ {
+ mtrie0 = &ip4_fib_get (fib_index0)->mtrie;
+ mtrie1 = &ip4_fib_get (fib_index1)->mtrie;
+
+ leaf0 = leaf1 = IP4_FIB_MTRIE_LEAF_ROOT;
+
+ leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 0);
+ leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, dst_addr1, 0);
+ }
+
+ tcp0 = (void *) (ip0 + 1);
+ tcp1 = (void *) (ip1 + 1);
+
+ is_tcp_udp0 = (ip0->protocol == IP_PROTOCOL_TCP
+ || ip0->protocol == IP_PROTOCOL_UDP);
+ is_tcp_udp1 = (ip1->protocol == IP_PROTOCOL_TCP
+ || ip1->protocol == IP_PROTOCOL_UDP);
+
+ if (! lookup_for_responses_to_locally_received_packets)
+ {
+ leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 1);
+ leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, dst_addr1, 1);
+ }
+
+ if (! lookup_for_responses_to_locally_received_packets)
+ {
+ leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 2);
+ leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, dst_addr1, 2);
+ }
+
+ if (! lookup_for_responses_to_locally_received_packets)
+ {
+ leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 3);
+ leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, dst_addr1, 3);
+ }
+
+ if (lookup_for_responses_to_locally_received_packets)
+ {
+ lb_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_RX];
+ lb_index1 = vnet_buffer (p1)->ip.adj_index[VLIB_RX];
+ }
+ else
+ {
+ /* Handle default route. */
+ leaf0 = (leaf0 == IP4_FIB_MTRIE_LEAF_EMPTY ? mtrie0->default_leaf : leaf0);
+ leaf1 = (leaf1 == IP4_FIB_MTRIE_LEAF_EMPTY ? mtrie1->default_leaf : leaf1);
+
+ lb_index0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0);
+ lb_index1 = ip4_fib_mtrie_leaf_get_adj_index (leaf1);
+ }
+
+ lb0 = load_balance_get (lb_index0);
+ lb1 = load_balance_get (lb_index1);
+
+ /* Use flow hash to compute multipath adjacency. */
hash_c0 = vnet_buffer (p0)->ip.flow_hash = 0;
hash_c1 = vnet_buffer (p1)->ip.flow_hash = 0;
- if (PREDICT_FALSE (adj0->n_adj > 1))
+ if (PREDICT_FALSE (lb0->lb_n_buckets > 1))
{
- flow_hash_config0 =
- vec_elt_at_index (im->fibs, fib_index0)->flow_hash_config;
- hash_c0 = vnet_buffer (p0)->ip.flow_hash =
+ flow_hash_config0 = lb0->lb_hash_config;
+ hash_c0 = vnet_buffer (p0)->ip.flow_hash =
ip4_compute_flow_hash (ip0, flow_hash_config0);
}
- if (PREDICT_FALSE(adj1->n_adj > 1))
+ if (PREDICT_FALSE(lb0->lb_n_buckets > 1))
{
- flow_hash_config1 =
- vec_elt_at_index (im->fibs, fib_index1)->flow_hash_config;
- hash_c1 = vnet_buffer (p1)->ip.flow_hash =
+ flow_hash_config1 = lb1->lb_hash_config;
+ hash_c1 = vnet_buffer (p1)->ip.flow_hash =
ip4_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 += (hash_c0 & (adj0->n_adj - 1));
- adj_index1 += (hash_c1 & (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)
+ ASSERT (lb0->lb_n_buckets > 0);
+ ASSERT (is_pow2 (lb0->lb_n_buckets));
+ ASSERT (lb1->lb_n_buckets > 0);
+ ASSERT (is_pow2 (lb1->lb_n_buckets));
+
+ dpo0 = load_balance_get_bucket_i(lb0,
+ (hash_c0 &
+ (lb0->lb_n_buckets_minus_1)));
+ dpo1 = load_balance_get_bucket_i(lb1,
+ (hash_c1 &
+ (lb0->lb_n_buckets_minus_1)));
+
+ next0 = dpo0->dpoi_next_node;
+ vnet_buffer (p0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index;
+ next1 = dpo1->dpoi_next_node;
+ vnet_buffer (p1)->ip.adj_index[VLIB_TX] = dpo1->dpoi_index;
+
+ vlib_increment_combined_counter
+ (cm, cpu_index, lb_index0, 1,
+ vlib_buffer_length_in_chain (vm, p0)
+ sizeof(ethernet_header_t));
- vlib_increment_combined_counter
- (cm, cpu_index, adj_index1, 1,
+ vlib_increment_combined_counter
+ (cm, cpu_index, lb_index1, 1,
vlib_buffer_length_in_chain (vm, p1)
+ sizeof(ethernet_header_t));
- from += 2;
- to_next += 2;
- n_left_to_next -= 2;
- n_left_from -= 2;
-
- wrong_next = (next0 != next) + 2*(next1 != next);
- if (PREDICT_FALSE (wrong_next != 0))
- {
- switch (wrong_next)
- {
- case 1:
- /* A B A */
- to_next[-2] = pi1;
- to_next -= 1;
- n_left_to_next += 1;
- vlib_set_next_frame_buffer (vm, node, next0, pi0);
- break;
-
- case 2:
- /* A A B */
- to_next -= 1;
- n_left_to_next += 1;
- vlib_set_next_frame_buffer (vm, node, next1, pi1);
- break;
-
- case 3:
- /* A B C */
- to_next -= 2;
- n_left_to_next += 2;
- vlib_set_next_frame_buffer (vm, node, next0, pi0);
- vlib_set_next_frame_buffer (vm, node, next1, pi1);
- if (next0 == next1)
- {
- /* 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);
- }
- }
- }
- }
+ from += 2;
+ to_next += 2;
+ n_left_to_next -= 2;
+ n_left_from -= 2;
+
+ wrong_next = (next0 != next) + 2*(next1 != next);
+ if (PREDICT_FALSE (wrong_next != 0))
+ {
+ switch (wrong_next)
+ {
+ case 1:
+ /* A B A */
+ to_next[-2] = pi1;
+ to_next -= 1;
+ n_left_to_next += 1;
+ vlib_set_next_frame_buffer (vm, node, next0, pi0);
+ break;
+
+ case 2:
+ /* A A B */
+ to_next -= 1;
+ n_left_to_next += 1;
+ vlib_set_next_frame_buffer (vm, node, next1, pi1);
+ break;
+
+ case 3:
+ /* A B C */
+ to_next -= 2;
+ n_left_to_next += 2;
+ vlib_set_next_frame_buffer (vm, node, next0, pi0);
+ vlib_set_next_frame_buffer (vm, node, next1, pi1);
+ if (next0 == next1)
+ {
+ /* 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);
+ }
+ }
+ }
+ }
while (n_left_from > 0 && n_left_to_next > 0)
{
ip4_header_t * ip0;
__attribute__((unused)) tcp_header_t * tcp0;
ip_lookup_next_t next0;
- ip_adjacency_t * adj0;
+ const load_balance_t *lb0;
ip4_fib_mtrie_t * mtrie0;
ip4_fib_mtrie_leaf_t leaf0;
ip4_address_t * dst_addr0;
- __attribute__((unused)) u32 pi0, fib_index0, adj_index0, is_tcp_udp0;
- u32 flow_hash_config0, hash_c0;
+ __attribute__((unused)) u32 pi0, fib_index0, is_tcp_udp0, lbi0;
+ flow_hash_config_t flow_hash_config0;
+ const dpo_id_t *dpo0;
+ u32 hash_c0;
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.ip4;
- }
- 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) ?
if (! lookup_for_responses_to_locally_received_packets)
{
- mtrie0 = &vec_elt_at_index (im->fibs, fib_index0)->mtrie;
+ mtrie0 = &ip4_fib_get( fib_index0)->mtrie;
leaf0 = IP4_FIB_MTRIE_LEAF_ROOT;
leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 3);
if (lookup_for_responses_to_locally_received_packets)
- adj_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_RX];
+ lbi0 = vnet_buffer (p0)->ip.adj_index[VLIB_RX];
else
{
/* Handle default route. */
leaf0 = (leaf0 == IP4_FIB_MTRIE_LEAF_EMPTY ? mtrie0->default_leaf : leaf0);
- adj_index0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0);
+ lbi0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0);
}
- ASSERT (adj_index0 == ip4_fib_lookup_with_table (im, fib_index0,
- dst_addr0,
- /* no_default_route */ 0));
-
- adj0 = ip_get_adjacency (lm, adj_index0);
-
- next0 = adj0->lookup_next_index;
+ lb0 = load_balance_get (lbi0);
/* Use flow hash to compute multipath adjacency. */
hash_c0 = vnet_buffer (p0)->ip.flow_hash = 0;
- if (PREDICT_FALSE(adj0->n_adj > 1))
+ if (PREDICT_FALSE(lb0->lb_n_buckets > 1))
{
- flow_hash_config0 =
- vec_elt_at_index (im->fibs, fib_index0)->flow_hash_config;
+ flow_hash_config0 = lb0->lb_hash_config;
hash_c0 = vnet_buffer (p0)->ip.flow_hash =
ip4_compute_flow_hash (ip0, flow_hash_config0);
}
- ASSERT (adj0->n_adj > 0);
- ASSERT (is_pow2 (adj0->n_adj));
- adj_index0 += (hash_c0 & (adj0->n_adj - 1));
+ ASSERT (lb0->lb_n_buckets > 0);
+ ASSERT (is_pow2 (lb0->lb_n_buckets));
- vnet_buffer (p0)->ip.adj_index[VLIB_TX] = adj_index0;
+ dpo0 = load_balance_get_bucket_i(lb0,
+ (hash_c0 &
+ (lb0->lb_n_buckets_minus_1)));
- vlib_increment_combined_counter
- (cm, cpu_index, adj_index0, 1,
- vlib_buffer_length_in_chain (vm, p0)
- + sizeof(ethernet_header_t));
+ next0 = dpo0->dpoi_next_node;
+ vnet_buffer (p0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index;
+
+ vlib_increment_combined_counter
+ (cm, cpu_index, lbi0, 1,
+ vlib_buffer_length_in_chain (vm, p0));
from += 1;
to_next += 1;
vlib_put_next_frame (vm, node, next, n_left_to_next);
}
+ if (node->flags & VLIB_NODE_FLAG_TRACE)
+ ip4_forward_next_trace(vm, node, frame, VLIB_TX);
+
return frame->n_vectors;
}
+/** @brief IPv4 lookup node.
+ @node ip4-lookup
+
+ This is the main IPv4 lookup dispatch node.
+
+ @param vm vlib_main_t corresponding to the current thread
+ @param node vlib_node_runtime_t
+ @param frame vlib_frame_t whose contents should be dispatched
+
+ @par Graph mechanics: buffer metadata, next index usage
+
+ @em Uses:
+ - <code>vnet_buffer(b)->sw_if_index[VLIB_RX]</code>
+ - Indicates the @c sw_if_index value of the interface that the
+ packet was received on.
+ - <code>vnet_buffer(b)->sw_if_index[VLIB_TX]</code>
+ - When the value is @c ~0 then the node performs a longest prefix
+ match (LPM) for the packet destination address in the FIB attached
+ to the receive interface.
+ - Otherwise perform LPM for the packet destination address in the
+ indicated FIB. In this case <code>[VLIB_TX]</code> is a FIB index
+ value (0, 1, ...) and not a VRF id.
+
+ @em Sets:
+ - <code>vnet_buffer(b)->ip.adj_index[VLIB_TX]</code>
+ - The lookup result adjacency index.
+
+ <em>Next Index:</em>
+ - Dispatches the packet to the node index found in
+ ip_adjacency_t @c adj->lookup_next_index
+ (where @c adj is the lookup result adjacency).
+*/
static uword
ip4_lookup (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
return ip4_lookup_inline (vm, node, frame,
- /* lookup_for_responses_to_locally_received_packets */ 0,
- /* is_indirect */ 0);
+ /* lookup_for_responses_to_locally_received_packets */ 0);
}
-void ip4_adjacency_set_interface_route (vnet_main_t * vnm,
- ip_adjacency_t * adj,
- u32 sw_if_index,
- u32 if_address_index)
+static u8 * format_ip4_lookup_trace (u8 * s, va_list * args);
+
+VLIB_REGISTER_NODE (ip4_lookup_node) = {
+ .function = ip4_lookup,
+ .name = "ip4-lookup",
+ .vector_size = sizeof (u32),
+
+ .format_trace = format_ip4_lookup_trace,
+ .n_next_nodes = IP_LOOKUP_N_NEXT,
+ .next_nodes = IP4_LOOKUP_NEXT_NODES,
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (ip4_lookup_node, ip4_lookup)
+
+always_inline uword
+ip4_load_balance (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
{
- vnet_hw_interface_t * hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
- ip_lookup_next_t n;
- vnet_l3_packet_type_t packet_type;
- u32 node_index;
+ 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();
- if (hw->hw_class_index == ethernet_hw_interface_class.index
- || hw->hw_class_index == srp_hw_interface_class.index)
- {
- /*
- * We have a bit of a problem in this case. ip4-arp uses
- * the rewrite_header.next_index to hand pkts to the
- * indicated inteface output node. We can end up in
- * ip4_rewrite_local, too, which also pays attention to
- * rewrite_header.next index. Net result: a hack in
- * ip4_rewrite_local...
- */
- n = IP_LOOKUP_NEXT_ARP;
- node_index = ip4_arp_node.index;
- adj->if_address_index = if_address_index;
- adj->arp.next_hop.ip4.as_u32 = 0;
- ip46_address_reset(&adj->arp.next_hop);
- packet_type = VNET_L3_PACKET_TYPE_ARP;
- }
- else
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ next = node->cached_next_index;
+
+ if (node->flags & VLIB_NODE_FLAG_TRACE)
+ ip4_forward_next_trace(vm, node, frame, VLIB_TX);
+
+ while (n_left_from > 0)
{
- n = IP_LOOKUP_NEXT_REWRITE;
- node_index = ip4_rewrite_node.index;
- packet_type = VNET_L3_PACKET_TYPE_IP4;
+ vlib_get_next_frame (vm, node, next,
+ to_next, n_left_to_next);
+
+
+ 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 ip4_header_t *ip0;
+ const dpo_id_t *dpo0;
+
+ pi0 = from[0];
+ to_next[0] = pi0;
+
+ p0 = vlib_get_buffer (vm, pi0);
+
+ ip0 = vlib_buffer_get_current (p0);
+ lbi0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX];
+
+ lb0 = load_balance_get(lbi0);
+ hc0 = lb0->lb_hash_config;
+ vnet_buffer(p0)->ip.flow_hash = ip4_compute_flow_hash(ip0, hc0);
+
+ 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] = dpo0->dpoi_index;
+
+ 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;
+ n_left_from -= 1;
+
+ if (PREDICT_FALSE (next0 != next))
+ {
+ 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);
+ to_next[0] = pi0;
+ to_next += 1;
+ n_left_to_next -= 1;
+ }
+ }
+
+ vlib_put_next_frame (vm, node, next, n_left_to_next);
}
- adj->lookup_next_index = n;
- vnet_rewrite_for_sw_interface
- (vnm,
- packet_type,
- sw_if_index,
- node_index,
- VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST,
- &adj->rewrite_header,
- sizeof (adj->rewrite_data));
+ return frame->n_vectors;
+}
+
+static u8 * format_ip4_forward_next_trace (u8 * s, va_list * args);
+
+VLIB_REGISTER_NODE (ip4_load_balance_node) = {
+ .function = ip4_load_balance,
+ .name = "ip4-load-balance",
+ .vector_size = sizeof (u32),
+ .sibling_of = "ip4-lookup",
+
+ .format_trace = format_ip4_forward_next_trace,
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (ip4_load_balance_node, ip4_load_balance)
+
+/* get first interface address */
+ip4_address_t *
+ip4_interface_first_address (ip4_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;
+ ip4_address_t * result = 0;
+
+ foreach_ip_interface_address (lm, ia, sw_if_index,
+ 1 /* honor unnumbered */,
+ ({
+ ip4_address_t * a = ip_interface_address_get_address (lm, ia);
+ result = a;
+ break;
+ }));
+ if (result_ia)
+ *result_ia = result ? ia : 0;
+ return result;
}
static void
ip4_main_t * im, u32 fib_index,
ip_interface_address_t * a)
{
- vnet_main_t * vnm = vnet_get_main();
ip_lookup_main_t * lm = &im->lookup_main;
- ip_adjacency_t * adj;
ip4_address_t * address = ip_interface_address_get_address (lm, a);
- ip4_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 = (IP4_ROUTE_FLAG_ADD
- | IP4_ROUTE_FLAG_FIB_INDEX
- | IP4_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;
+ fib_prefix_t pfx = {
+ .fp_len = a->address_length,
+ .fp_proto = FIB_PROTOCOL_IP4,
+ .fp_addr.ip4 = *address,
+ };
a->neighbor_probe_adj_index = ~0;
- if (a->address_length < 32)
- {
- adj = ip_add_adjacency (lm, /* template */ 0, /* block size */ 1,
- &x.adj_index);
- ip4_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);
- ip4_add_del_route (im, &x);
- a->neighbor_probe_adj_index = x.adj_index;
- }
-
- /* Add e.g. 1.1.1.1/32 as local to this host. */
- adj = ip_add_adjacency (lm, /* template */ 0, /* block size */ 1,
- &x.adj_index);
-
- classify_table_index = ~0;
+
+ if (pfx.fp_len < 32)
+ {
+ fib_node_index_t fei;
+
+ fei = fib_table_entry_update_one_path(fib_index,
+ &pfx,
+ FIB_SOURCE_INTERFACE,
+ (FIB_ENTRY_FLAG_CONNECTED |
+ FIB_ENTRY_FLAG_ATTACHED),
+ FIB_PROTOCOL_IP4,
+ NULL, /* No next-hop address */
+ sw_if_index,
+ ~0, // invalid FIB index
+ 1,
+ MPLS_LABEL_INVALID,
+ FIB_ROUTE_PATH_FLAG_NONE);
+ a->neighbor_probe_adj_index = fib_entry_get_adj(fei);
+ }
+
+ pfx.fp_len = 32;
+
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;
- }
- 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];
- /*
- * Local adjs are never to be rewritten. Spoofed pkts w/ src = dst = local
- * fail an RPF-ish check, but still go thru the rewrite code...
- */
- adj->rewrite_header.data_bytes = 0;
+ {
+ 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_NULL;
+
+ dpo_set(&dpo,
+ DPO_CLASSIFY,
+ DPO_PROTO_IP4,
+ classify_dpo_create(FIB_PROTOCOL_IP4,
+ classify_table_index));
+
+ fib_table_entry_special_dpo_add(fib_index,
+ &pfx,
+ FIB_SOURCE_CLASSIFY,
+ FIB_ENTRY_FLAG_NONE,
+ &dpo);
+ dpo_reset(&dpo);
+ }
+ }
- ip_call_add_del_adjacency_callbacks (lm, x.adj_index, /* is_del */ 0);
- x.dst_address_length = 32;
- ip4_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_IP4,
+ &pfx.fp_addr,
+ sw_if_index,
+ ~0, // invalid FIB index
+ 1,
+ MPLS_LABEL_INVALID,
+ FIB_ROUTE_PATH_FLAG_NONE);
}
static void
-ip4_del_interface_routes (ip4_main_t * im, u32 fib_index, ip4_address_t * address, u32 address_length)
+ip4_del_interface_routes (ip4_main_t * im,
+ u32 fib_index,
+ ip4_address_t * address,
+ u32 address_length)
{
- ip4_add_del_route_args_t x;
-
- /* Add e.g. 1.0.0.0/8 as interface route (arp for Ethernet). */
- x.table_index_or_table_id = fib_index;
- x.flags = (IP4_ROUTE_FLAG_DEL
- | IP4_ROUTE_FLAG_FIB_INDEX
- | IP4_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;
-
- if (address_length < 32)
- ip4_add_del_route (im, &x);
-
- x.dst_address_length = 32;
- ip4_add_del_route (im, &x);
-
- ip4_delete_matching_routes (im,
- fib_index,
- IP4_ROUTE_FLAG_FIB_INDEX,
- address,
- address_length);
+ fib_prefix_t pfx = {
+ .fp_len = address_length,
+ .fp_proto = FIB_PROTOCOL_IP4,
+ .fp_addr.ip4 = *address,
+ };
+
+ if (pfx.fp_len < 32)
+ {
+ fib_table_entry_delete(fib_index,
+ &pfx,
+ FIB_SOURCE_INTERFACE);
+ }
+
+ pfx.fp_len = 32;
+ fib_table_entry_delete(fib_index,
+ &pfx,
+ FIB_SOURCE_INTERFACE);
}
-typedef struct {
- u32 sw_if_index;
- ip4_address_t address;
- u32 length;
-} ip4_interface_address_t;
+void
+ip4_sw_interface_enable_disable (u32 sw_if_index,
+ u32 is_enable)
+{
+ vlib_main_t * vm = vlib_get_main();
+ ip4_main_t * im = &ip4_main;
+ ip_lookup_main_t * lm = &im->lookup_main;
+ u32 ci, cast;
+ u32 lookup_feature_index;
-static clib_error_t *
-ip4_add_del_interface_address_internal (vlib_main_t * vm,
- u32 sw_if_index,
- ip4_address_t * new_address,
- u32 new_length,
- u32 redistribute,
- u32 insert_routes,
- u32 is_del);
+ 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
+ {
+ 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;
+ }
+
+ for (cast = 0; cast <= VNET_IP_RX_MULTICAST_FEAT; cast++)
+ {
+ ip_config_main_t * cm = &lm->feature_config_mains[cast];
+ vnet_config_main_t * vcm = &cm->config_main;
+
+ 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];
+
+ if (cast == VNET_IP_RX_UNICAST_FEAT)
+ lookup_feature_index = im->ip4_unicast_rx_feature_lookup;
+ else
+ lookup_feature_index = im->ip4_multicast_rx_feature_lookup;
+
+ if (is_enable)
+ ci = vnet_config_add_feature (vm, vcm,
+ ci,
+ lookup_feature_index,
+ /* config data */ 0,
+ /* # bytes of config data */ 0);
+ else
+ ci = vnet_config_del_feature (vm, vcm,
+ ci,
+ lookup_feature_index,
+ /* config data */ 0,
+ /* # bytes of config data */ 0);
+ cm->config_index_by_sw_if_index[sw_if_index] = ci;
+ }
+}
static clib_error_t *
ip4_add_del_interface_address_internal (vlib_main_t * vm,
u32 sw_if_index,
ip4_address_t * address,
u32 address_length,
- u32 redistribute,
- u32 insert_routes,
u32 is_del)
{
vnet_main_t * vnm = vnet_get_main();
vec_elt (im->fib_index_by_sw_if_index, sw_if_index));
vec_add1 (addr_fib, ip4_af);
- /* When adding an address check that it does not conflict with an existing address. */
+ /* FIXME-LATER
+ * there is no support for adj-fib handling in the presence of overlapping
+ * subnets on interfaces. Easy fix - disallow overlapping subnets, like
+ * most routers do.
+ */
if (! is_del)
{
+ /* When adding an address check that it does not conflict
+ with an existing address. */
ip_interface_address_t * ia;
foreach_ip_interface_address (&im->lookup_main, ia, sw_if_index,
0 /* honor unnumbered */,
format_ip4_address_and_length, address, address_length,
format_ip4_address_and_length, x, ia->address_length,
format_vnet_sw_if_index_name, vnm, sw_if_index);
- }));
+ }));
}
elts_before = pool_elts (lm->if_address_pool);
if (error)
goto done;
- if (vnet_sw_interface_is_admin_up (vnm, sw_if_index) && insert_routes)
- {
- if (is_del)
- ip4_del_interface_routes (im, ip4_af.fib_index, address,
- address_length);
-
- else
- ip4_add_interface_routes (sw_if_index,
- im, ip4_af.fib_index,
- pool_elt_at_index
- (lm->if_address_pool, if_address_index));
- }
+ ip4_sw_interface_enable_disable(sw_if_index, !is_del);
+
+ if (is_del)
+ ip4_del_interface_routes (im, ip4_af.fib_index, address,
+ address_length);
+ else
+ ip4_add_interface_routes (sw_if_index,
+ im, ip4_af.fib_index,
+ pool_elt_at_index
+ (lm->if_address_pool, if_address_index));
/* If pool did not grow/shrink: add duplicate address. */
if (elts_before != pool_elts (lm->if_address_pool))
{
return ip4_add_del_interface_address_internal
(vm, sw_if_index, address, address_length,
- /* redistribute */ 1,
- /* insert_routes */ 1,
is_del);
}
+/* Built-in ip4 unicast rx feature path definition */
+VNET_IP4_UNICAST_FEATURE_INIT (ip4_flow_classify, static) = {
+ .node_name = "ip4-flow-classify",
+ .runs_before = ORDER_CONSTRAINTS {"ip4-inacl", 0},
+ .feature_index = &ip4_main.ip4_unicast_rx_feature_flow_classify,
+};
+
+VNET_IP4_UNICAST_FEATURE_INIT (ip4_inacl, static) = {
+ .node_name = "ip4-inacl",
+ .runs_before = ORDER_CONSTRAINTS {"ip4-source-check-via-rx", 0},
+ .feature_index = &ip4_main.ip4_unicast_rx_feature_check_access,
+};
+
+VNET_IP4_UNICAST_FEATURE_INIT (ip4_source_check_1, static) = {
+ .node_name = "ip4-source-check-via-rx",
+ .runs_before = ORDER_CONSTRAINTS {"ip4-source-check-via-any", 0},
+ .feature_index =
+ &ip4_main.ip4_unicast_rx_feature_source_reachable_via_rx,
+};
+
+VNET_IP4_UNICAST_FEATURE_INIT (ip4_source_check_2, static) = {
+ .node_name = "ip4-source-check-via-any",
+ .runs_before = ORDER_CONSTRAINTS {"ip4-policer-classify", 0},
+ .feature_index =
+ &ip4_main.ip4_unicast_rx_feature_source_reachable_via_any,
+};
+
+VNET_IP4_UNICAST_FEATURE_INIT (ip4_source_and_port_range_check_rx, static) = {
+ .node_name = "ip4-source-and-port-range-check-rx",
+ .runs_before = ORDER_CONSTRAINTS {"ip4-policer-classify", 0},
+ .feature_index =
+ &ip4_main.ip4_unicast_rx_feature_source_and_port_range_check,
+};
+
+VNET_IP4_UNICAST_FEATURE_INIT (ip4_policer_classify, static) = {
+ .node_name = "ip4-policer-classify",
+ .runs_before = ORDER_CONSTRAINTS {"ipsec-input-ip4", 0},
+ .feature_index =
+ &ip4_main.ip4_unicast_rx_feature_policer_classify,
+};
+
+VNET_IP4_UNICAST_FEATURE_INIT (ip4_ipsec, static) = {
+ .node_name = "ipsec-input-ip4",
+ .runs_before = ORDER_CONSTRAINTS {"vpath-input-ip4", 0},
+ .feature_index = &ip4_main.ip4_unicast_rx_feature_ipsec,
+};
+
+VNET_IP4_UNICAST_FEATURE_INIT (ip4_vpath, static) = {
+ .node_name = "vpath-input-ip4",
+ .runs_before = ORDER_CONSTRAINTS {"ip4-lookup", 0},
+ .feature_index = &ip4_main.ip4_unicast_rx_feature_vpath,
+};
+
+VNET_IP4_UNICAST_FEATURE_INIT (ip4_lookup, static) = {
+ .node_name = "ip4-lookup",
+ .runs_before = ORDER_CONSTRAINTS {"ip4-drop", 0},
+ .feature_index = &ip4_main.ip4_unicast_rx_feature_lookup,
+};
+
+VNET_IP4_UNICAST_FEATURE_INIT (ip4_drop, static) = {
+ .node_name = "ip4-drop",
+ .runs_before = 0, /* not before any other features */
+ .feature_index = &ip4_main.ip4_unicast_rx_feature_drop,
+};
+
+
+/* Built-in ip4 multicast rx feature path definition */
+VNET_IP4_MULTICAST_FEATURE_INIT (ip4_vpath_mc, static) = {
+ .node_name = "vpath-input-ip4",
+ .runs_before = ORDER_CONSTRAINTS {"ip4-lookup-multicast", 0},
+ .feature_index = &ip4_main.ip4_multicast_rx_feature_vpath,
+};
+
+VNET_IP4_MULTICAST_FEATURE_INIT (ip4_lookup_mc, static) = {
+ .node_name = "ip4-lookup-multicast",
+ .runs_before = ORDER_CONSTRAINTS {"ip4-drop", 0},
+ .feature_index = &ip4_main.ip4_multicast_rx_feature_lookup,
+};
+
+VNET_IP4_MULTICAST_FEATURE_INIT (ip4_mc_drop, static) = {
+ .node_name = "ip4-drop",
+ .runs_before = 0, /* last feature */
+ .feature_index = &ip4_main.ip4_multicast_rx_feature_drop,
+};
+
+static char * rx_feature_start_nodes[] =
+ { "ip4-input", "ip4-input-no-checksum"};
+
+static char * tx_feature_start_nodes[] =
+{
+ "ip4-rewrite-transit",
+ "ip4-midchain",
+};
+
+/* Source and port-range check ip4 tx feature path definition */
+VNET_IP4_TX_FEATURE_INIT (ip4_source_and_port_range_check_tx, static) = {
+ .node_name = "ip4-source-and-port-range-check-tx",
+ .runs_before = ORDER_CONSTRAINTS {"interface-output", 0},
+ .feature_index =
+ &ip4_main.ip4_unicast_tx_feature_source_and_port_range_check,
+
+};
+
+/* Built-in ip4 tx feature path definition */
+VNET_IP4_TX_FEATURE_INIT (interface_output, static) = {
+ .node_name = "interface-output",
+ .runs_before = 0, /* not before any other features */
+ .feature_index = &ip4_main.ip4_tx_feature_interface_output,
+};
+
static clib_error_t *
-ip4_sw_interface_admin_up_down (vnet_main_t * vnm,
- u32 sw_if_index,
- u32 flags)
+ip4_feature_init (vlib_main_t * vm, ip4_main_t * im)
{
- ip4_main_t * im = &ip4_main;
- ip_interface_address_t * ia;
- ip4_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);
-
- 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);
+ ip_lookup_main_t * lm = &im->lookup_main;
+ clib_error_t * error;
+ vnet_cast_t cast;
+ ip_config_main_t * cm;
+ vnet_config_main_t * vcm;
+ char **feature_start_nodes;
+ int feature_start_len;
+
+ for (cast = 0; cast < VNET_N_IP_FEAT; cast++)
+ {
+ cm = &lm->feature_config_mains[cast];
+ vcm = &cm->config_main;
- foreach_ip_interface_address (&im->lookup_main, ia, sw_if_index,
- 0 /* honor unnumbered */,
- ({
- a = ip_interface_address_get_address (&im->lookup_main, ia);
- if (is_admin_up)
- ip4_add_interface_routes (sw_if_index,
- im, fib_index,
- ia);
- else
- ip4_del_interface_routes (im, fib_index,
- a, ia->address_length);
- }));
+ if (cast < VNET_IP_TX_FEAT)
+ {
+ feature_start_nodes = rx_feature_start_nodes;
+ feature_start_len = ARRAY_LEN(rx_feature_start_nodes);
+ }
+ else
+ {
+ feature_start_nodes = tx_feature_start_nodes;
+ feature_start_len = ARRAY_LEN(tx_feature_start_nodes);
+ }
+
+ if ((error = ip_feature_init_cast (vm, cm, vcm,
+ feature_start_nodes,
+ feature_start_len,
+ im->next_feature[cast],
+ &im->feature_nodes[cast])))
+ return error;
+ }
return 0;
}
-
-VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION (ip4_sw_interface_admin_up_down);
static clib_error_t *
ip4_sw_interface_add_del (vnet_main_t * vnm,
ip4_main_t * im = &ip4_main;
ip_lookup_main_t * lm = &im->lookup_main;
u32 ci, cast;
+ u32 feature_index;
- for (cast = 0; cast < VNET_N_CAST; cast++)
+ /* Fill in lookup tables with default table (0). */
+ vec_validate (im->fib_index_by_sw_if_index, sw_if_index);
+
+ for (cast = 0; cast < VNET_N_IP_FEAT; cast++)
{
- ip_config_main_t * cm = &lm->rx_config_mains[cast];
+ ip_config_main_t * cm = &lm->feature_config_mains[cast];
vnet_config_main_t * vcm = &cm->config_main;
- if (! vcm->node_index_by_feature_index)
- {
- if (cast == VNET_UNICAST)
- {
- static char * start_nodes[] = { "ip4-input", "ip4-input-no-checksum", };
- static char * feature_nodes[] = {
- [IP4_RX_FEATURE_CHECK_ACCESS] = "ip4-inacl",
- [IP4_RX_FEATURE_SOURCE_CHECK_REACHABLE_VIA_RX] = "ip4-source-check-via-rx",
- [IP4_RX_FEATURE_SOURCE_CHECK_REACHABLE_VIA_ANY] = "ip4-source-check-via-any",
- [IP4_RX_FEATURE_IPSEC] = "ipsec-input-ip4",
- [IP4_RX_FEATURE_VPATH] = "vpath-input-ip4",
- [IP4_RX_FEATURE_LOOKUP] = "ip4-lookup",
- };
-
- vnet_config_init (vm, vcm,
- start_nodes, ARRAY_LEN (start_nodes),
- feature_nodes, ARRAY_LEN (feature_nodes));
- }
- else
- {
- static char * start_nodes[] = { "ip4-input", "ip4-input-no-checksum", };
- static char * feature_nodes[] = {
- [IP4_RX_FEATURE_VPATH] = "vpath-input-ip4",
- [IP4_RX_FEATURE_LOOKUP] = "ip4-lookup-multicast",
- };
-
- vnet_config_init (vm, vcm,
- start_nodes, ARRAY_LEN (start_nodes),
- feature_nodes, ARRAY_LEN (feature_nodes));
- }
- }
-
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];
+ if (cast == VNET_IP_RX_UNICAST_FEAT)
+ feature_index = im->ip4_unicast_rx_feature_drop;
+ else if (cast == VNET_IP_RX_MULTICAST_FEAT)
+ feature_index = im->ip4_multicast_rx_feature_drop;
+ else
+ feature_index = im->ip4_tx_feature_interface_output;
+
if (is_add)
- ci = vnet_config_add_feature (vm, vcm,
+ ci = vnet_config_add_feature (vm, vcm,
ci,
- IP4_RX_FEATURE_LOOKUP,
+ feature_index,
/* config data */ 0,
/* # bytes of config data */ 0);
else
- ci = vnet_config_del_feature (vm, vcm,
- ci,
- IP4_RX_FEATURE_LOOKUP,
- /* config data */ 0,
- /* # bytes of config data */ 0);
-
- cm->config_index_by_sw_if_index[sw_if_index] = ci;
- }
-
- return /* no error */ 0;
-}
-
-VNET_SW_INTERFACE_ADD_DEL_FUNCTION (ip4_sw_interface_add_del);
-
-
-VLIB_REGISTER_NODE (ip4_lookup_node) = {
- .function = ip4_lookup,
- .name = "ip4-lookup",
- .vector_size = sizeof (u32),
-
- .n_next_nodes = IP_LOOKUP_N_NEXT,
- .next_nodes = IP4_LOOKUP_NEXT_NODES,
-};
+ {
+ ci = vnet_config_del_feature (vm, vcm, ci,
+ feature_index,
+ /* config data */ 0,
+ /* # bytes of config data */ 0);
+ if (vec_len(im->ip_enabled_by_sw_if_index) > sw_if_index)
+ im->ip_enabled_by_sw_if_index[sw_if_index] = 0;
+ }
+ cm->config_index_by_sw_if_index[sw_if_index] = ci;
+ /*
+ * note: do not update the tx feature count here.
+ */
+ }
-static uword
-ip4_indirect (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- return ip4_lookup_inline (vm, node, frame,
- /* lookup_for_responses_to_locally_received_packets */ 0,
- /* is_indirect */ 1);
+ return /* no error */ 0;
}
-VLIB_REGISTER_NODE (ip4_indirect_node) = {
- .function = ip4_indirect,
- .name = "ip4-indirect",
- .vector_size = sizeof (u32),
-
- .n_next_nodes = IP_LOOKUP_N_NEXT,
- .next_nodes = IP4_LOOKUP_NEXT_NODES,
-};
-
+VNET_SW_INTERFACE_ADD_DEL_FUNCTION (ip4_sw_interface_add_del);
/* Global IP4 main. */
ip4_main_t ip4_main;
ip4_lookup_init (vlib_main_t * vm)
{
ip4_main_t * im = &ip4_main;
+ clib_error_t * error;
uword i;
for (i = 0; i < ARRAY_LEN (im->fib_masks); i++)
im->fib_masks[i] = clib_host_to_net_u32 (m);
}
- /* Create FIB with index 0 and table id of 0. */
- find_ip4_fib_by_table_index_or_id (im, /* table id */ 0, IP4_ROUTE_FLAG_TABLE_ID);
-
ip_lookup_init (&im->lookup_main, /* is_ip6 */ 0);
+ /* Create FIB with index 0 and table id of 0. */
+ fib_table_find_or_create_and_lock(FIB_PROTOCOL_IP4, 0);
+
{
pg_node_t * pn;
pn = pg_get_node (ip4_lookup_node.index);
"ip4 arp");
}
- return 0;
+ error = ip4_feature_init (vm, im);
+
+ return error;
}
VLIB_INIT_FUNCTION (ip4_lookup_init);
typedef struct {
/* Adjacency taken. */
- u32 adj_index;
+ u32 dpo_index;
u32 flow_hash;
u32 fib_index;
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
ip4_forward_next_trace_t * t = va_arg (*args, ip4_forward_next_trace_t *);
- vnet_main_t * vnm = vnet_get_main();
- ip4_main_t * im = &ip4_main;
- ip_adjacency_t * adj;
uword indent = format_get_indent (s);
+ s = format (s, "%U%U",
+ format_white_space, indent,
+ format_ip4_header, t->packet_data, sizeof (t->packet_data));
+ return s;
+}
- adj = ip_get_adjacency (&im->lookup_main, t->adj_index);
- 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);
- switch (adj->lookup_next_index)
- {
- case IP_LOOKUP_NEXT_REWRITE:
- 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));
- break;
+static u8 * format_ip4_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 *);
+ ip4_forward_next_trace_t * t = va_arg (*args, ip4_forward_next_trace_t *);
+ uword indent = format_get_indent (s);
- default:
- break;
- }
+ s = format (s, "fib %d dpo-idx %d flow hash: 0x%08x",
+ t->fib_index, t->dpo_index, t->flow_hash);
+ s = format (s, "\n%U%U",
+ format_white_space, indent,
+ format_ip4_header, t->packet_data, sizeof (t->packet_data));
+ return s;
+}
+static u8 * format_ip4_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 *);
+ ip4_forward_next_trace_t * t = va_arg (*args, ip4_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 dpo-idx %d : %U flow hash: 0x%08x",
+ t->fib_index, t->dpo_index, format_ip_adjacency,
+ vnm, t->dpo_index, FORMAT_IP_ADJACENCY_NONE,
+ t->flow_hash);
+ s = format (s, "\n%U%U",
+ format_white_space, indent,
+ format_ip_adjacency_packet_data,
+ vnm, t->dpo_index,
+ t->packet_data, sizeof (t->packet_data));
return s;
}
if (b0->flags & VLIB_BUFFER_IS_TRACED)
{
t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
- t0->adj_index = vnet_buffer (b0)->ip.adj_index[which_adj_index];
+ t0->dpo_index = vnet_buffer (b0)->ip.adj_index[which_adj_index];
t0->flow_hash = vnet_buffer (b0)->ip.flow_hash;
- t0->fib_index = vec_elt (im->fib_index_by_sw_if_index,
- vnet_buffer(b0)->sw_if_index[VLIB_RX]);
+ 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));
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->dpo_index = vnet_buffer (b1)->ip.adj_index[which_adj_index];
t1->flow_hash = vnet_buffer (b1)->ip.flow_hash;
- t1->fib_index = vec_elt (im->fib_index_by_sw_if_index,
- vnet_buffer(b1)->sw_if_index[VLIB_RX]);
+ 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));
if (b0->flags & VLIB_BUFFER_IS_TRACED)
{
t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
- t0->adj_index = vnet_buffer (b0)->ip.adj_index[which_adj_index];
+ t0->dpo_index = vnet_buffer (b0)->ip.adj_index[which_adj_index];
t0->flow_hash = vnet_buffer (b0)->ip.flow_hash;
- t0->fib_index = vec_elt (im->fib_index_by_sw_if_index,
- vnet_buffer(b0)->sw_if_index[VLIB_RX]);
+ 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_frame_t * frame)
{ return ip4_drop_or_punt (vm, node, frame, IP4_ERROR_ADJACENCY_PUNT); }
-static uword
-ip4_miss (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{ return ip4_drop_or_punt (vm, node, frame, IP4_ERROR_DST_LOOKUP_MISS); }
-
VLIB_REGISTER_NODE (ip4_drop_node,static) = {
.function = ip4_drop,
.name = "ip4-drop",
},
};
+VLIB_NODE_FUNCTION_MULTIARCH (ip4_drop_node, ip4_drop)
+
VLIB_REGISTER_NODE (ip4_punt_node,static) = {
.function = ip4_punt,
.name = "ip4-punt",
},
};
-VLIB_REGISTER_NODE (ip4_miss_node,static) = {
- .function = ip4_miss,
- .name = "ip4-miss",
- .vector_size = sizeof (u32),
-
- .format_trace = format_ip4_forward_next_trace,
-
- .n_next_nodes = 1,
- .next_nodes = {
- [0] = "error-drop",
- },
-};
+VLIB_NODE_FUNCTION_MULTIARCH (ip4_punt_node, ip4_punt)
/* Compute TCP/UDP/ICMP4 checksum in software. */
u16
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;
- ip4_header_t * ip0, * ip1;
- udp_header_t * udp0, * udp1;
- ip4_fib_mtrie_t * mtrie0, * mtrie1;
- ip4_fib_mtrie_leaf_t leaf0, leaf1;
- ip_adjacency_t * adj0, * adj1;
- u32 pi0, ip_len0, udp_len0, flags0, next0, fib_index0, adj_index0;
- u32 pi1, ip_len1, udp_len1, flags1, next1, fib_index1, adj_index1;
- i32 len_diff0, len_diff1;
- u8 error0, is_udp0, is_tcp_udp0, good_tcp_udp0, proto0;
- u8 error1, is_udp1, is_tcp_udp1, good_tcp_udp1, proto1;
- u8 enqueue_code;
+ {
+ vlib_buffer_t * p0, * p1;
+ ip4_header_t * ip0, * ip1;
+ udp_header_t * udp0, * udp1;
+ ip4_fib_mtrie_t * mtrie0, * mtrie1;
+ ip4_fib_mtrie_leaf_t leaf0, leaf1;
+ const dpo_id_t *dpo0, *dpo1;
+ const load_balance_t *lb0, *lb1;
+ u32 pi0, ip_len0, udp_len0, flags0, next0, fib_index0, lbi0;
+ u32 pi1, ip_len1, udp_len1, flags1, next1, fib_index1, lbi1;
+ i32 len_diff0, len_diff1;
+ u8 error0, is_udp0, is_tcp_udp0, good_tcp_udp0, proto0;
+ u8 error1, is_udp1, is_tcp_udp1, good_tcp_udp1, proto1;
+ u8 enqueue_code;
- 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;
+ 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);
fib_index1 = vec_elt (im->fib_index_by_sw_if_index,
vnet_buffer(p1)->sw_if_index[VLIB_RX]);
- mtrie0 = &vec_elt_at_index (im->fibs, fib_index0)->mtrie;
- mtrie1 = &vec_elt_at_index (im->fibs, fib_index1)->mtrie;
+ mtrie0 = &ip4_fib_get (fib_index0)->mtrie;
+ mtrie1 = &ip4_fib_get (fib_index1)->mtrie;
leaf0 = leaf1 = IP4_FIB_MTRIE_LEAF_ROOT;
leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->src_address, 0);
leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, &ip1->src_address, 0);
- proto0 = ip0->protocol;
- proto1 = ip1->protocol;
+ /* Treat IP frag packets as "experimental" protocol for now
+ until support of IP frag reassembly is implemented */
+ proto0 = ip4_is_fragment(ip0) ? 0xfe : ip0->protocol;
+ proto1 = ip4_is_fragment(ip1) ? 0xfe : ip1->protocol;
is_udp0 = proto0 == IP_PROTOCOL_UDP;
is_udp1 = proto1 == IP_PROTOCOL_UDP;
is_tcp_udp0 = is_udp0 || proto0 == IP_PROTOCOL_TCP;
leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->src_address, 3);
leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, &ip1->src_address, 3);
+ leaf0 = (leaf0 == IP4_FIB_MTRIE_LEAF_EMPTY ? mtrie0->default_leaf : leaf0);
+ leaf1 = (leaf1 == IP4_FIB_MTRIE_LEAF_EMPTY ? mtrie1->default_leaf : leaf1);
- vnet_buffer (p0)->ip.adj_index[VLIB_RX] = adj_index0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0);
- vnet_buffer (p0)->ip.adj_index[VLIB_TX] = adj_index0;
-
- vnet_buffer (p1)->ip.adj_index[VLIB_RX] = adj_index1 = ip4_fib_mtrie_leaf_get_adj_index (leaf1);
- vnet_buffer (p1)->ip.adj_index[VLIB_TX] = adj_index1;
+ vnet_buffer (p0)->ip.adj_index[VLIB_RX] = lbi0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0);
+ vnet_buffer (p0)->ip.adj_index[VLIB_TX] = lbi0;
- ASSERT (adj_index0 == ip4_fib_lookup_with_table (im, fib_index0,
- &ip0->src_address,
- /* no_default_route */ 1));
- ASSERT (adj_index1 == ip4_fib_lookup_with_table (im, fib_index1,
- &ip1->src_address,
- /* no_default_route */ 1));
+ vnet_buffer (p1)->ip.adj_index[VLIB_RX] = lbi1 = ip4_fib_mtrie_leaf_get_adj_index (leaf1);
+ vnet_buffer (p1)->ip.adj_index[VLIB_TX] = lbi1;
- adj0 = ip_get_adjacency (lm, adj_index0);
- adj1 = ip_get_adjacency (lm, adj_index1);
+ lb0 = load_balance_get(lbi0);
+ lb1 = load_balance_get(lbi1);
+ dpo0 = load_balance_get_bucket_i(lb0, 0);
+ dpo1 = load_balance_get_bucket_i(lb1, 0);
/*
* Must have a route to source otherwise we drop the packet.
* ip4 broadcasts are accepted, e.g. to make dhcp client work
+ *
+ * The checks are:
+ * - the source is a recieve => it's from us => bogus, do this
+ * first since it sets a different error code.
+ * - uRPF check for any route to source - accept if passes.
+ * - allow packets destined to the broadcast address from unknown sources
*/
- error0 = (error0 == IP4_ERROR_UNKNOWN_PROTOCOL
- && adj0->lookup_next_index != IP_LOOKUP_NEXT_REWRITE
- && adj0->lookup_next_index != IP_LOOKUP_NEXT_ARP
- && adj0->lookup_next_index != IP_LOOKUP_NEXT_LOCAL
- && ip0->dst_address.as_u32 != 0xFFFFFFFF
+ error0 = ((error0 == IP4_ERROR_UNKNOWN_PROTOCOL &&
+ dpo0->dpoi_type == DPO_RECEIVE) ?
+ IP4_ERROR_SPOOFED_LOCAL_PACKETS :
+ error0);
+ error0 = ((error0 == IP4_ERROR_UNKNOWN_PROTOCOL &&
+ !fib_urpf_check_size(lb0->lb_urpf) &&
+ ip0->dst_address.as_u32 != 0xFFFFFFFF)
? IP4_ERROR_SRC_LOOKUP_MISS
: error0);
- error1 = (error1 == IP4_ERROR_UNKNOWN_PROTOCOL
- && adj1->lookup_next_index != IP_LOOKUP_NEXT_REWRITE
- && adj1->lookup_next_index != IP_LOOKUP_NEXT_ARP
- && adj1->lookup_next_index != IP_LOOKUP_NEXT_LOCAL
- && ip0->dst_address.as_u32 != 0xFFFFFFFF
+ error1 = ((error1 == IP4_ERROR_UNKNOWN_PROTOCOL &&
+ dpo1->dpoi_type == DPO_RECEIVE) ?
+ IP4_ERROR_SPOOFED_LOCAL_PACKETS :
+ error1);
+ error1 = ((error1 == IP4_ERROR_UNKNOWN_PROTOCOL &&
+ !fib_urpf_check_size(lb1->lb_urpf) &&
+ ip1->dst_address.as_u32 != 0xFFFFFFFF)
? IP4_ERROR_SRC_LOOKUP_MISS
: error1);
udp_header_t * udp0;
ip4_fib_mtrie_t * mtrie0;
ip4_fib_mtrie_leaf_t leaf0;
- ip_adjacency_t * adj0;
- u32 pi0, next0, ip_len0, udp_len0, flags0, fib_index0, adj_index0;
+ u32 pi0, next0, ip_len0, udp_len0, flags0, fib_index0, lbi0;
i32 len_diff0;
u8 error0, is_udp0, is_tcp_udp0, good_tcp_udp0, proto0;
-
+ load_balance_t *lb0;
+ const dpo_id_t *dpo0;
+
pi0 = to_next[0] = from[0];
from += 1;
n_left_from -= 1;
fib_index0 = vec_elt (im->fib_index_by_sw_if_index,
vnet_buffer(p0)->sw_if_index[VLIB_RX]);
- mtrie0 = &vec_elt_at_index (im->fibs, fib_index0)->mtrie;
+ mtrie0 = &ip4_fib_get (fib_index0)->mtrie;
leaf0 = IP4_FIB_MTRIE_LEAF_ROOT;
leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->src_address, 0);
- proto0 = ip0->protocol;
+ /* Treat IP frag packets as "experimental" protocol for now
+ until support of IP frag reassembly is implemented */
+ proto0 = ip4_is_fragment(ip0) ? 0xfe : ip0->protocol;
is_udp0 = proto0 == IP_PROTOCOL_UDP;
is_tcp_udp0 = is_udp0 || proto0 == IP_PROTOCOL_TCP;
: error0);
leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->src_address, 3);
+ leaf0 = (leaf0 == IP4_FIB_MTRIE_LEAF_EMPTY ? mtrie0->default_leaf : leaf0);
- vnet_buffer (p0)->ip.adj_index[VLIB_RX] = adj_index0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0);
- vnet_buffer (p0)->ip.adj_index[VLIB_TX] = adj_index0;
+ lbi0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0);
+ vnet_buffer (p0)->ip.adj_index[VLIB_TX] = lbi0;
- ASSERT (adj_index0 == ip4_fib_lookup_with_table (im, fib_index0,
- &ip0->src_address,
- /* no_default_route */ 1));
+ lb0 = load_balance_get(lbi0);
+ dpo0 = load_balance_get_bucket_i(lb0, 0);
- adj0 = ip_get_adjacency (lm, adj_index0);
+ vnet_buffer (p0)->ip.adj_index[VLIB_TX] =
+ vnet_buffer (p0)->ip.adj_index[VLIB_RX] =
+ dpo0->dpoi_index;
- /* Must have a route to source otherwise we drop the packet. */
- error0 = (error0 == IP4_ERROR_UNKNOWN_PROTOCOL
- && adj0->lookup_next_index != IP_LOOKUP_NEXT_REWRITE
- && adj0->lookup_next_index != IP_LOOKUP_NEXT_ARP
- && adj0->lookup_next_index != IP_LOOKUP_NEXT_LOCAL
- && ip0->dst_address.as_u32 != 0xFFFFFFFF
+ error0 = ((error0 == IP4_ERROR_UNKNOWN_PROTOCOL &&
+ dpo0->dpoi_type == DPO_RECEIVE) ?
+ IP4_ERROR_SPOOFED_LOCAL_PACKETS :
+ error0);
+ error0 = ((error0 == IP4_ERROR_UNKNOWN_PROTOCOL &&
+ !fib_urpf_check_size(lb0->lb_urpf) &&
+ ip0->dst_address.as_u32 != 0xFFFFFFFF)
? IP4_ERROR_SRC_LOOKUP_MISS
: error0);
},
};
+VLIB_NODE_FUNCTION_MULTIARCH (ip4_local_node, ip4_local)
+
void ip4_register_protocol (u32 protocol, u32 node_index)
{
vlib_main_t * vm = vlib_get_main();
.short_help = "Show ip local protocol table",
};
-static uword
-ip4_arp (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+always_inline uword
+ip4_arp_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame,
+ int is_glean)
{
vnet_main_t * vnm = vnet_get_main();
ip4_main_t * im = &ip4_main;
while (n_left_from > 0 && n_left_to_next_drop > 0)
{
+ u32 pi0, adj_index0, a0, b0, c0, m0, sw_if_index0, drop0;
+ ip_adjacency_t * adj0;
vlib_buffer_t * p0;
ip4_header_t * ip0;
- ethernet_header_t * eh0;
- u32 pi0, adj_index0, a0, b0, c0, m0, sw_if_index0, drop0;
uword bm0;
- ip_adjacency_t * adj0;
pi0 = from[0];
adj0 = ip_get_adjacency (lm, adj_index0);
ip0 = vlib_buffer_get_current (p0);
- /* If packet destination is not local, send ARP to next hop */
- if (adj0->arp.next_hop.ip4.as_u32)
- ip0->dst_address.data_u32 = adj0->arp.next_hop.ip4.as_u32;
-
- /*
- * if ip4_rewrite_local applied the IP_LOOKUP_NEXT_ARP
- * rewrite to this packet, we need to skip it here.
- * Note, to distinguish from src IP addr *.8.6.*, we
- * check for a bcast eth dest instead of IPv4 version.
- */
- eh0 = (ethernet_header_t*)ip0;
- if ((ip0->ip_version_and_header_length & 0xF0) != 0x40)
- {
- u32 vlan_num = 0;
- u16 * etype = &eh0->type;
- while ((*etype == clib_host_to_net_u16 (0x8100)) //dot1q
- || (*etype == clib_host_to_net_u16 (0x88a8)))//dot1ad
- {
- vlan_num += 1;
- etype += 2; //vlan tag also 16 bits, same as etype
- }
- if (*etype == clib_host_to_net_u16 (0x0806)) //arp
- {
- vlib_buffer_advance (
- p0, sizeof(ethernet_header_t) + (4*vlan_num));
- ip0 = vlib_buffer_get_current (p0);
- }
- }
-
+ /*
+ * this is the Glean case, so we are ARPing for the
+ * packet's destination
+ */
a0 = hash_seeds[0];
b0 = hash_seeds[1];
c0 = hash_seeds[2];
sw_if_index0 = adj0->rewrite_header.sw_if_index;
vnet_buffer (p0)->sw_if_index[VLIB_TX] = sw_if_index0;
- a0 ^= ip0->dst_address.data_u32;
+ if (is_glean)
+ {
+ a0 ^= ip0->dst_address.data_u32;
+ }
+ else
+ {
+ a0 ^= adj0->sub_type.nbr.next_hop.ip4.data_u32;
+ }
b0 ^= sw_if_index0;
hash_v3_finalize32 (a0, b0, c0);
* Can happen if the control-plane is programming tables
* with traffic flowing; at least that's today's lame excuse.
*/
- if (adj0->lookup_next_index != IP_LOOKUP_NEXT_ARP)
- {
- p0->error = node->errors[IP4_ARP_ERROR_NON_ARP_ADJ];
- }
+ if ((is_glean && adj0->lookup_next_index != IP_LOOKUP_NEXT_GLEAN) ||
+ (!is_glean && adj0->lookup_next_index != IP_LOOKUP_NEXT_ARP))
+ {
+ p0->error = node->errors[IP4_ARP_ERROR_NON_ARP_ADJ];
+ }
else
/* Send ARP request. */
{
clib_memcpy (h0->ip4_over_ethernet[0].ethernet, hw_if0->hw_address,
sizeof (h0->ip4_over_ethernet[0].ethernet));
- ip4_src_address_for_packet (im, p0, &h0->ip4_over_ethernet[0].ip4, sw_if_index0);
+ if (is_glean)
+ {
+ /* The interface's source address is stashed in the Glean Adj */
+ h0->ip4_over_ethernet[0].ip4 = adj0->sub_type.glean.receive_addr.ip4;
+
+ /* Copy in destination address we are requesting. This is the
+ * glean case, so it's the packet's destination.*/
+ h0->ip4_over_ethernet[1].ip4.data_u32 = ip0->dst_address.data_u32;
+ }
+ else
+ {
+ /* Src IP address in ARP header. */
+ if (ip4_src_address_for_packet(lm, sw_if_index0,
+ &h0->ip4_over_ethernet[0].ip4))
+ {
+ /* No source address available */
+ p0->error = node->errors[IP4_ARP_ERROR_NO_SOURCE_ADDRESS];
+ vlib_buffer_free(vm, &bi0, 1);
+ continue;
+ }
- /* Copy in destination address we are requesting. */
- h0->ip4_over_ethernet[1].ip4.data_u32 = ip0->dst_address.data_u32;
+ /* Copy in destination address we are requesting from the
+ incomplete adj */
+ h0->ip4_over_ethernet[1].ip4.data_u32 =
+ adj0->sub_type.nbr.next_hop.ip4.as_u32;
+ }
vlib_buffer_copy_trace_flag (vm, p0, bi0);
b0 = vlib_get_buffer (vm, bi0);
return frame->n_vectors;
}
+static uword
+ip4_arp (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ return (ip4_arp_inline(vm, node, frame, 0));
+}
+
+static uword
+ip4_glean (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ return (ip4_arp_inline(vm, node, frame, 1));
+}
+
static char * ip4_arp_error_strings[] = {
[IP4_ARP_ERROR_DROP] = "address overflow drops",
[IP4_ARP_ERROR_REQUEST_SENT] = "ARP requests sent",
[IP4_ARP_ERROR_NON_ARP_ADJ] = "ARPs to non-ARP adjacencies",
[IP4_ARP_ERROR_REPLICATE_DROP] = "ARP replication completed",
[IP4_ARP_ERROR_REPLICATE_FAIL] = "ARP replication failed",
+ [IP4_ARP_ERROR_NO_SOURCE_ADDRESS] = "no source address for ARP request",
};
VLIB_REGISTER_NODE (ip4_arp_node) = {
},
};
+VLIB_REGISTER_NODE (ip4_glean_node) = {
+ .function = ip4_glean,
+ .name = "ip4-glean",
+ .vector_size = sizeof (u32),
+
+ .format_trace = format_ip4_forward_next_trace,
+
+ .n_errors = ARRAY_LEN (ip4_arp_error_strings),
+ .error_strings = ip4_arp_error_strings,
+
+ .n_next_nodes = IP4_ARP_N_NEXT,
+ .next_nodes = {
+ [IP4_ARP_NEXT_DROP] = "error-drop",
+ },
+};
+
#define foreach_notrace_ip4_arp_error \
_(DROP) \
_(REQUEST_SENT) \
typedef enum {
IP4_REWRITE_NEXT_DROP,
IP4_REWRITE_NEXT_ARP,
+ IP4_REWRITE_NEXT_ICMP_ERROR,
} ip4_rewrite_next_t;
always_inline uword
ip4_rewrite_inline (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame,
- int rewrite_for_locally_received_packets)
+ int rewrite_for_locally_received_packets,
+ int is_midchain)
{
ip_lookup_main_t * lm = &ip4_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, ip4_input_node.index);
vlib_rx_or_tx_t adj_rx_tx = rewrite_for_locally_received_packets ? VLIB_RX : VLIB_TX;
+ ip_config_main_t * cm = &lm->feature_config_mains[VNET_IP_TX_FEAT];
n_left_from = frame->n_vectors;
next_index = node->cached_next_index;
u32 pi0, rw_len0, next0, error0, checksum0, adj_index0;
u32 pi1, rw_len1, next1, error1, checksum1, adj_index1;
u32 next0_override, next1_override;
-
+ u32 tx_sw_if_index0, tx_sw_if_index1;
+
if (rewrite_for_locally_received_packets)
next0_override = next1_override = 0;
ip1 = vlib_buffer_get_current (p1);
error0 = error1 = IP4_ERROR_NONE;
+ next0 = next1 = IP4_REWRITE_NEXT_DROP;
/* Decrement TTL & update checksum.
Works either endian, so no need for byte swap. */
ip0->ttl = ttl0;
ip1->ttl = ttl1;
- error0 = ttl0 <= 0 ? IP4_ERROR_TIME_EXPIRED : error0;
- error1 = ttl1 <= 0 ? IP4_ERROR_TIME_EXPIRED : error1;
+ /*
+ * If the ttl drops below 1 when forwarding, generate
+ * an ICMP response.
+ */
+ if (PREDICT_FALSE(ttl0 <= 0))
+ {
+ error0 = IP4_ERROR_TIME_EXPIRED;
+ vnet_buffer (p0)->sw_if_index[VLIB_TX] = (u32)~0;
+ icmp4_error_set_vnet_buffer(p0, ICMP4_time_exceeded,
+ ICMP4_time_exceeded_ttl_exceeded_in_transit, 0);
+ next0 = IP4_REWRITE_NEXT_ICMP_ERROR;
+ }
+ if (PREDICT_FALSE(ttl1 <= 0))
+ {
+ error1 = IP4_ERROR_TIME_EXPIRED;
+ vnet_buffer (p1)->sw_if_index[VLIB_TX] = (u32)~0;
+ icmp4_error_set_vnet_buffer(p1, ICMP4_time_exceeded,
+ ICMP4_time_exceeded_ttl_exceeded_in_transit, 0);
+ next1 = IP4_REWRITE_NEXT_ICMP_ERROR;
+ }
/* Verify checksum. */
ASSERT (ip0->checksum == ip4_header_checksum (ip0));
if (rewrite_for_locally_received_packets)
{
- /*
- * If someone sends e.g. an icmp4 w/ src = dst = interface addr,
- * we end up here with a local adjacency in hand
- * The local adj rewrite data is 0xfefe on purpose.
- * Bad engineer, no donut for you.
- */
- if (PREDICT_FALSE(adj0->lookup_next_index
- == IP_LOOKUP_NEXT_LOCAL))
- error0 = IP4_ERROR_SPOOFED_LOCAL_PACKETS;
if (PREDICT_FALSE(adj0->lookup_next_index
== IP_LOOKUP_NEXT_ARP))
next0_override = IP4_REWRITE_NEXT_ARP;
- if (PREDICT_FALSE(adj1->lookup_next_index
- == IP_LOOKUP_NEXT_LOCAL))
- error1 = IP4_ERROR_SPOOFED_LOCAL_PACKETS;
if (PREDICT_FALSE(adj1->lookup_next_index
== IP_LOOKUP_NEXT_ARP))
next1_override = IP4_REWRITE_NEXT_ARP;
/* Worth pipelining. No guarantee that adj0,1 are hot... */
rw_len0 = adj0[0].rewrite_header.data_bytes;
rw_len1 = adj1[0].rewrite_header.data_bytes;
- next0 = (error0 == IP4_ERROR_NONE)
- ? adj0[0].rewrite_header.next_index : 0;
+ vnet_buffer(p0)->ip.save_rewrite_length = rw_len0;
+ vnet_buffer(p1)->ip.save_rewrite_length = rw_len1;
+
+ /* Check MTU of outgoing interface. */
+ error0 = (vlib_buffer_length_in_chain (vm, p0) > adj0[0].rewrite_header.max_l3_packet_bytes
+ ? IP4_ERROR_MTU_EXCEEDED
+ : error0);
+ error1 = (vlib_buffer_length_in_chain (vm, p1) > adj1[0].rewrite_header.max_l3_packet_bytes
+ ? IP4_ERROR_MTU_EXCEEDED
+ : error1);
+
+ next0 = (error0 == IP4_ERROR_NONE)
+ ? adj0[0].rewrite_header.next_index : next0;
if (rewrite_for_locally_received_packets)
next0 = next0 && next0_override ? next0_override : next0;
- next1 = (error1 == IP4_ERROR_NONE)
- ? adj1[0].rewrite_header.next_index : 0;
+ next1 = (error1 == IP4_ERROR_NONE)
+ ? adj1[0].rewrite_header.next_index : next1;
if (rewrite_for_locally_received_packets)
next1 = next1 && next1_override ? next1_override : next1;
*/
if (PREDICT_FALSE (rw_len0 > sizeof(ethernet_header_t)))
vlib_increment_combined_counter
- (&lm->adjacency_counters,
+ (&adjacency_counters,
cpu_index, adj_index0,
/* packet increment */ 0,
/* byte increment */ rw_len0-sizeof(ethernet_header_t));
if (PREDICT_FALSE (rw_len1 > sizeof(ethernet_header_t)))
vlib_increment_combined_counter
- (&lm->adjacency_counters,
+ (&adjacency_counters,
cpu_index, adj_index1,
/* packet increment */ 0,
/* byte increment */ rw_len1-sizeof(ethernet_header_t));
- /* Check MTU of outgoing interface. */
- error0 = (vlib_buffer_length_in_chain (vm, p0) > adj0[0].rewrite_header.max_l3_packet_bytes
- ? IP4_ERROR_MTU_EXCEEDED
- : error0);
- error1 = (vlib_buffer_length_in_chain (vm, p1) > adj1[0].rewrite_header.max_l3_packet_bytes
- ? IP4_ERROR_MTU_EXCEEDED
- : error1);
-
- p0->current_data -= rw_len0;
- p1->current_data -= rw_len1;
+ /* Don't adjust the buffer for ttl issue; icmp-error node wants
+ * to see the IP headerr */
+ if (PREDICT_TRUE(error0 == IP4_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;
+
+ if (PREDICT_FALSE
+ (clib_bitmap_get (lm->tx_sw_if_has_ip_output_features,
+ tx_sw_if_index0)))
+ {
+ p0->current_config_index =
+ vec_elt (cm->config_index_by_sw_if_index,
+ tx_sw_if_index0);
+ vnet_get_config_data (&cm->config_main,
+ &p0->current_config_index,
+ &next0,
+ /* # bytes of config data */ 0);
+ }
+ }
+ if (PREDICT_TRUE(error1 == IP4_ERROR_NONE))
+ {
+ p1->current_data -= rw_len1;
+ p1->current_length += rw_len1;
- p0->current_length += rw_len0;
- 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;
- vnet_buffer (p0)->sw_if_index[VLIB_TX] = adj0[0].rewrite_header.sw_if_index;
- vnet_buffer (p1)->sw_if_index[VLIB_TX] = adj1[0].rewrite_header.sw_if_index;
-
- p0->error = error_node->errors[error0];
- p1->error = error_node->errors[error1];
+ if (PREDICT_FALSE
+ (clib_bitmap_get (lm->tx_sw_if_has_ip_output_features,
+ tx_sw_if_index1)))
+ {
+ p1->current_config_index =
+ vec_elt (cm->config_index_by_sw_if_index,
+ tx_sw_if_index1);
+ vnet_get_config_data (&cm->config_main,
+ &p1->current_config_index,
+ &next1,
+ /* # bytes of config data */ 0);
+ }
+ }
/* Guess we are only writing on simple Ethernet header. */
vnet_rewrite_two_headers (adj0[0], adj1[0],
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,
ip4_header_t * ip0;
u32 pi0, rw_len0, adj_index0, next0, error0, checksum0;
u32 next0_override;
-
+ u32 tx_sw_if_index0;
+
if (rewrite_for_locally_received_packets)
next0_override = 0;
ip0 = vlib_buffer_get_current (p0);
error0 = IP4_ERROR_NONE;
- next0 = 0; /* drop on error */
+ next0 = IP4_REWRITE_NEXT_DROP; /* drop on error */
/* Decrement TTL & update checksum. */
if (! rewrite_for_locally_received_packets)
ASSERT (ip0->checksum == ip4_header_checksum (ip0));
- error0 = ttl0 <= 0 ? IP4_ERROR_TIME_EXPIRED : error0;
+ if (PREDICT_FALSE(ttl0 <= 0))
+ {
+ /*
+ * If the ttl drops below 1 when forwarding, generate
+ * an ICMP response.
+ */
+ error0 = IP4_ERROR_TIME_EXPIRED;
+ next0 = IP4_REWRITE_NEXT_ICMP_ERROR;
+ vnet_buffer (p0)->sw_if_index[VLIB_TX] = (u32)~0;
+ icmp4_error_set_vnet_buffer(p0, ICMP4_time_exceeded,
+ ICMP4_time_exceeded_ttl_exceeded_in_transit, 0);
+ }
}
if (rewrite_for_locally_received_packets)
{
- /*
- * If someone sends e.g. an icmp4 w/ src = dst = interface addr,
- * we end up here with a local adjacency in hand
- * The local adj rewrite data is 0xfefe on purpose.
- * Bad engineer, no donut for you.
- */
- if (PREDICT_FALSE(adj0->lookup_next_index
- == IP_LOOKUP_NEXT_LOCAL))
- error0 = IP4_ERROR_SPOOFED_LOCAL_PACKETS;
/*
* We have to override the next_index in ARP adjacencies,
* because they're set up for ip4-arp, not this node...
/* Update packet buffer attributes/set output interface. */
rw_len0 = adj0[0].rewrite_header.data_bytes;
+ vnet_buffer(p0)->ip.save_rewrite_length = rw_len0;
if (PREDICT_FALSE (rw_len0 > sizeof(ethernet_header_t)))
vlib_increment_combined_counter
- (&lm->adjacency_counters,
+ (&adjacency_counters,
cpu_index, adj_index0,
/* packet increment */ 0,
/* byte increment */ rw_len0-sizeof(ethernet_header_t));
> adj0[0].rewrite_header.max_l3_packet_bytes
? IP4_ERROR_MTU_EXCEEDED
: error0);
-
+
p0->error = error_node->errors[error0];
- 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 = (error0 == IP4_ERROR_NONE)
- ? adj0[0].rewrite_header.next_index : 0;
+
+ /* Don't adjust the buffer for ttl issue; icmp-error node wants
+ * to see the IP headerr */
+ if (PREDICT_TRUE(error0 == IP4_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;
+
+ if (is_midchain)
+ {
+ adj0->sub_type.midchain.fixup_func(vm, adj0, p0);
+ }
+
+ if (PREDICT_FALSE
+ (clib_bitmap_get (lm->tx_sw_if_has_ip_output_features,
+ tx_sw_if_index0)))
+ {
+ p0->current_config_index =
+ vec_elt (cm->config_index_by_sw_if_index,
+ tx_sw_if_index0);
+ vnet_get_config_data (&cm->config_main,
+ &p0->current_config_index,
+ &next0,
+ /* # bytes of config data */ 0);
+ }
+ }
if (rewrite_for_locally_received_packets)
next0 = next0 && next0_override ? next0_override : next0;
return frame->n_vectors;
}
+
+/** @brief IPv4 transit rewrite node.
+ @node ip4-rewrite-transit
+
+ This is the IPv4 transit-rewrite node: decrement TTL, fix the ipv4
+ header checksum, fetch the ip adjacency, check the outbound mtu,
+ apply the adjacency rewrite, and send pkts to the adjacency
+ rewrite header's rewrite_next_index.
+
+ @param vm vlib_main_t corresponding to the current thread
+ @param node vlib_node_runtime_t
+ @param frame vlib_frame_t whose contents should be dispatched
+
+ @par Graph mechanics: buffer metadata, next index usage
+
+ @em Uses:
+ - <code>vnet_buffer(b)->ip.adj_index[VLIB_TX]</code>
+ - the rewrite adjacency index
+ - <code>adj->lookup_next_index</code>
+ - Must be IP_LOOKUP_NEXT_REWRITE or IP_LOOKUP_NEXT_ARP, otherwise
+ the packet will be dropped.
+ - <code>adj->rewrite_header</code>
+ - Rewrite string length, rewrite string, next_index
+
+ @em Sets:
+ - <code>b->current_data, b->current_length</code>
+ - Updated net of applying the rewrite string
+
+ <em>Next Indices:</em>
+ - <code> adj->rewrite_header.next_index </code>
+ or @c error-drop
+*/
static uword
ip4_rewrite_transit (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
return ip4_rewrite_inline (vm, node, frame,
- /* rewrite_for_locally_received_packets */ 0);
+ /* rewrite_for_locally_received_packets */ 0, 0);
}
+/** @brief IPv4 local rewrite node.
+ @node ip4-rewrite-local
+
+ This is the IPv4 local rewrite node. Fetch the ip adjacency, check
+ the outbound interface mtu, apply the adjacency rewrite, and send
+ pkts to the adjacency rewrite header's rewrite_next_index. Deal
+ with hemorrhoids of the form "some clown sends an icmp4 w/ src =
+ dst = interface addr."
+
+ @param vm vlib_main_t corresponding to the current thread
+ @param node vlib_node_runtime_t
+ @param frame vlib_frame_t whose contents should be dispatched
+
+ @par Graph mechanics: buffer metadata, next index usage
+
+ @em Uses:
+ - <code>vnet_buffer(b)->ip.adj_index[VLIB_RX]</code>
+ - the rewrite adjacency index
+ - <code>adj->lookup_next_index</code>
+ - Must be IP_LOOKUP_NEXT_REWRITE or IP_LOOKUP_NEXT_ARP, otherwise
+ the packet will be dropped.
+ - <code>adj->rewrite_header</code>
+ - Rewrite string length, rewrite string, next_index
+
+ @em Sets:
+ - <code>b->current_data, b->current_length</code>
+ - Updated net of applying the rewrite string
+
+ <em>Next Indices:</em>
+ - <code> adj->rewrite_header.next_index </code>
+ or @c error-drop
+*/
+
static uword
ip4_rewrite_local (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
return ip4_rewrite_inline (vm, node, frame,
- /* rewrite_for_locally_received_packets */ 1);
+ /* rewrite_for_locally_received_packets */ 1, 0);
+}
+
+static uword
+ip4_midchain (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ return ip4_rewrite_inline (vm, node, frame,
+ /* rewrite_for_locally_received_packets */ 0, 1);
}
VLIB_REGISTER_NODE (ip4_rewrite_node) = {
.name = "ip4-rewrite-transit",
.vector_size = sizeof (u32),
- .format_trace = format_ip4_forward_next_trace,
+ .format_trace = format_ip4_rewrite_trace,
- .n_next_nodes = 2,
+ .n_next_nodes = 3,
.next_nodes = {
[IP4_REWRITE_NEXT_DROP] = "error-drop",
[IP4_REWRITE_NEXT_ARP] = "ip4-arp",
+ [IP4_REWRITE_NEXT_ICMP_ERROR] = "ip4-icmp-error",
},
};
-VLIB_REGISTER_NODE (ip4_rewrite_local_node,static) = {
+VLIB_NODE_FUNCTION_MULTIARCH (ip4_rewrite_node, ip4_rewrite_transit)
+
+VLIB_REGISTER_NODE (ip4_midchain_node) = {
+ .function = ip4_midchain,
+ .name = "ip4-midchain",
+ .vector_size = sizeof (u32),
+
+ .format_trace = format_ip4_forward_next_trace,
+
+ .sibling_of = "ip4-rewrite-transit",
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (ip4_midchain_node, ip4_midchain)
+
+VLIB_REGISTER_NODE (ip4_rewrite_local_node) = {
.function = ip4_rewrite_local,
.name = "ip4-rewrite-local",
.vector_size = sizeof (u32),
.sibling_of = "ip4-rewrite-transit",
- .format_trace = format_ip4_forward_next_trace,
+ .format_trace = format_ip4_rewrite_trace,
- .n_next_nodes = 2,
- .next_nodes = {
- [IP4_REWRITE_NEXT_DROP] = "error-drop",
- [IP4_REWRITE_NEXT_ARP] = "ip4-arp",
- },
+ .n_next_nodes = 0,
};
+VLIB_NODE_FUNCTION_MULTIARCH (ip4_rewrite_local_node, ip4_rewrite_local)
+
static clib_error_t *
add_del_interface_table (vlib_main_t * vm,
unformat_input_t * input,
{
ip4_main_t * im = &ip4_main;
- ip4_fib_t * fib = find_ip4_fib_by_table_index_or_id (im, table_id, IP4_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_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4,
+ table_id);
+
+ //
+ // FIXME-LATER
+ // changing an interface's table has consequences for any connecteds
+ // and adj-fibs already installed.
+ //
+ vec_validate (im->fib_index_by_sw_if_index, sw_if_index);
+ im->fib_index_by_sw_if_index[sw_if_index] = fib_index;
}
done:
return error;
}
+/*?
+ * Place the indicated interface into the supplied VRF
+ *
+ * @cliexpar
+ * @cliexstart{set interface ip table}
+ *
+ * vpp# set interface ip table GigabitEthernet2/0/0 2
+ *
+ * Interface addresses added after setting the interface IP table end up in the indicated VRF 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.
+ * @cliexend
+ ?*/
VLIB_CLI_COMMAND (set_interface_ip_table_command, static) = {
.path = "set interface ip table",
.function = add_del_interface_table,
vlib_frame_t * frame)
{
ip4_main_t * im = &ip4_main;
- ip_lookup_main_t * lm = &im->lookup_main;
- vlib_combined_counter_main_t * cm = &im->lookup_main.adjacency_counters;
+ 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();
while (n_left_from >= 4 && n_left_to_next >= 2)
{
vlib_buffer_t * p0, * p1;
- u32 pi0, pi1, adj_index0, adj_index1, wrong_next;
+ u32 pi0, pi1, lb_index0, lb_index1, wrong_next;
ip_lookup_next_t next0, next1;
ip4_header_t * ip0, * ip1;
- ip_adjacency_t * adj0, * adj1;
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. */
{
fib_index1 = (vnet_buffer(p1)->sw_if_index[VLIB_TX] == (u32)~0) ?
fib_index1 : vnet_buffer(p1)->sw_if_index[VLIB_TX];
- adj_index0 = ip4_fib_lookup_buffer (im, fib_index0,
- &ip0->dst_address, p0);
- adj_index1 = ip4_fib_lookup_buffer (im, fib_index1,
- &ip1->dst_address, p1);
+ lb_index0 = ip4_fib_table_lookup_lb (ip4_fib_get(fib_index0),
+ &ip0->dst_address);
+ lb_index1 = ip4_fib_table_lookup_lb (ip4_fib_get(fib_index1),
+ &ip1->dst_address);
- adj0 = ip_get_adjacency (lm, adj_index0);
- adj1 = ip_get_adjacency (lm, adj_index1);
-
- next0 = adj0->lookup_next_index;
- next1 = adj1->lookup_next_index;
-
- flow_hash_config0 =
- vec_elt_at_index (im->fibs, fib_index0)->flow_hash_config;
+ lb0 = load_balance_get (lb_index0);
+ lb1 = load_balance_get (lb_index1);
- flow_hash_config1 =
- vec_elt_at_index (im->fibs, fib_index1)->flow_hash_config;
+ ASSERT (lb0->lb_n_buckets > 0);
+ ASSERT (is_pow2 (lb0->lb_n_buckets));
+ ASSERT (lb1->lb_n_buckets > 0);
+ ASSERT (is_pow2 (lb1->lb_n_buckets));
vnet_buffer (p0)->ip.flow_hash = ip4_compute_flow_hash
- (ip0, flow_hash_config0);
+ (ip0, lb0->lb_hash_config);
vnet_buffer (p1)->ip.flow_hash = ip4_compute_flow_hash
- (ip1, flow_hash_config1);
+ (ip1, lb1->lb_hash_config);
- 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));
+ 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 &
+ (lb0->lb_n_buckets_minus_1)));
- vnet_buffer (p0)->ip.adj_index[VLIB_TX] = adj_index0;
- vnet_buffer (p1)->ip.adj_index[VLIB_TX] = adj_index1;
+ next0 = dpo0->dpoi_next_node;
+ vnet_buffer (p0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index;
+ next1 = dpo1->dpoi_next_node;
+ vnet_buffer (p1)->ip.adj_index[VLIB_TX] = dpo1->dpoi_index;
if (1) /* $$$$$$ HACK FIXME */
vlib_increment_combined_counter
- (cm, cpu_index, adj_index0, 1,
+ (cm, cpu_index, lb_index0, 1,
vlib_buffer_length_in_chain (vm, p0));
if (1) /* $$$$$$ HACK FIXME */
vlib_increment_combined_counter
- (cm, cpu_index, adj_index1, 1,
+ (cm, cpu_index, lb_index1, 1,
vlib_buffer_length_in_chain (vm, p1));
from += 2;
{
vlib_buffer_t * p0;
ip4_header_t * ip0;
- u32 pi0, adj_index0;
+ u32 pi0, lb_index0;
ip_lookup_next_t next0;
- ip_adjacency_t * adj0;
u32 fib_index0;
- u32 flow_hash_config0;
+ const dpo_id_t *dpo0;
+ const load_balance_t * lb0;
pi0 = from[0];
to_next[0] = pi0;
fib_index0 = (vnet_buffer(p0)->sw_if_index[VLIB_TX] == (u32)~0) ?
fib_index0 : vnet_buffer(p0)->sw_if_index[VLIB_TX];
- adj_index0 = ip4_fib_lookup_buffer (im, fib_index0,
- &ip0->dst_address, p0);
-
- adj0 = ip_get_adjacency (lm, adj_index0);
+ lb_index0 = ip4_fib_table_lookup_lb (ip4_fib_get(fib_index0),
+ &ip0->dst_address);
- next0 = adj0->lookup_next_index;
+ lb0 = load_balance_get (lb_index0);
- flow_hash_config0 =
- vec_elt_at_index (im->fibs, fib_index0)->flow_hash_config;
+ ASSERT (lb0->lb_n_buckets > 0);
+ ASSERT (is_pow2 (lb0->lb_n_buckets));
- vnet_buffer (p0)->ip.flow_hash =
- ip4_compute_flow_hash (ip0, flow_hash_config0);
+ vnet_buffer (p0)->ip.flow_hash = ip4_compute_flow_hash
+ (ip0, lb0->lb_hash_config);
- ASSERT (adj0->n_adj > 0);
- ASSERT (is_pow2 (adj0->n_adj));
- adj_index0 += (vnet_buffer (p0)->ip.flow_hash & (adj0->n_adj - 1));
+ dpo0 = load_balance_get_bucket_i(lb0,
+ (vnet_buffer (p0)->ip.flow_hash &
+ (lb0->lb_n_buckets_minus_1)));
- vnet_buffer (p0)->ip.adj_index[VLIB_TX] = adj_index0;
+ next0 = dpo0->dpoi_next_node;
+ vnet_buffer (p0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index;
if (1) /* $$$$$$ HACK FIXME */
vlib_increment_combined_counter
- (cm, cpu_index, adj_index0, 1,
+ (cm, cpu_index, lb_index0, 1,
vlib_buffer_length_in_chain (vm, p0));
from += 1;
vlib_put_next_frame (vm, node, next, n_left_to_next);
}
+ if (node->flags & VLIB_NODE_FLAG_TRACE)
+ ip4_forward_next_trace(vm, node, frame, VLIB_TX);
+
return frame->n_vectors;
}
.function = ip4_lookup_multicast,
.name = "ip4-lookup-multicast",
.vector_size = sizeof (u32),
+ .sibling_of = "ip4-lookup",
+ .format_trace = format_ip4_lookup_trace,
- .n_next_nodes = IP_LOOKUP_N_NEXT,
- .next_nodes = IP4_LOOKUP_NEXT_NODES,
+ .n_next_nodes = 0,
};
+VLIB_NODE_FUNCTION_MULTIARCH (ip4_lookup_multicast_node, ip4_lookup_multicast)
+
VLIB_REGISTER_NODE (ip4_multicast_node,static) = {
.function = ip4_drop,
.name = "ip4-multicast",
int ip4_lookup_validate (ip4_address_t *a, u32 fib_index0)
{
- ip4_main_t * im = &ip4_main;
ip4_fib_mtrie_t * mtrie0;
ip4_fib_mtrie_leaf_t leaf0;
- u32 adj_index0;
+ u32 lbi0;
- mtrie0 = &vec_elt_at_index (im->fibs, fib_index0)->mtrie;
+ mtrie0 = &ip4_fib_get (fib_index0)->mtrie;
leaf0 = IP4_FIB_MTRIE_LEAF_ROOT;
leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, a, 0);
/* Handle default route. */
leaf0 = (leaf0 == IP4_FIB_MTRIE_LEAF_EMPTY ? mtrie0->default_leaf : leaf0);
- adj_index0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0);
+ lbi0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0);
- return adj_index0 == ip4_fib_lookup_with_table (im, fib_index0,
- a,
- /* no_default_route */ 0);
+ return lbi0 == ip4_fib_table_lookup_lb (ip4_fib_get(fib_index0), a);
}
static clib_error_t *
if (p == 0)
return VNET_API_ERROR_NO_SUCH_FIB;
- fib = vec_elt_at_index (im4->fibs, p[0]);
+ fib = ip4_fib_get (p[0]);
fib->flow_hash_config = flow_hash_config;
return 0;
ip4_main_t * ipm = &ip4_main;
ip_lookup_main_t * lm = &ipm->lookup_main;
vnet_classify_main_t * cm = &vnet_classify_main;
+ ip4_address_t *if_addr;
if (pool_is_free_index (im->sw_interfaces, sw_if_index))
return VNET_API_ERROR_NO_MATCHING_INTERFACE;
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;
+ if_addr = ip4_interface_first_address (ipm, sw_if_index, NULL);
+
+ if (NULL != if_addr)
+ {
+ fib_prefix_t pfx = {
+ .fp_len = 32,
+ .fp_proto = FIB_PROTOCOL_IP4,
+ .fp_addr.ip4 = *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_NULL;
+
+ dpo_set(&dpo,
+ DPO_CLASSIFY,
+ DPO_PROTO_IP4,
+ classify_dpo_create(FIB_PROTOCOL_IP4,
+ 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;
}
Code Review / vpp.git / blobdiff