/*
- * Copyright (c) 2015 Cisco and/or its affiliates.
+ * Copyright (c) 2016 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
* See the License for the specific language governing permissions and
* limitations under the License.
*/
-#include <vnet/lisp-gpe/lisp_gpe.h>
+/**
+ * @file
+ * @brief Common utility functions for IPv4, IPv6 and L2 LISP-GPE tunnels.
+ *
+ */
+#include <vnet/lisp-gpe/lisp_gpe.h>
+#include <vnet/lisp-gpe/lisp_gpe_adjacency.h>
+#include <vnet/adj/adj_midchain.h>
+#include <vnet/fib/fib_table.h>
+#include <vnet/fib/fib_entry.h>
+#include <vnet/fib/fib_path_list.h>
+#include <vnet/dpo/drop_dpo.h>
+#include <vnet/dpo/load_balance.h>
+
+/** LISP-GPE global state */
lisp_gpe_main_t lisp_gpe_main;
-static u8 * format_decap_next (u8 * s, va_list * args)
+/**
+ * @brief A Pool of all LISP forwarding entries
+ */
+static lisp_fwd_entry_t *lisp_fwd_entry_pool;
+
+/**
+ * DB of all forwarding entries. The Key is:{l-EID,r-EID,vni}
+ * where the EID encodes L2 or L3
+ */
+static uword *lisp_gpe_fwd_entries;
+
+static void
+create_fib_entries (lisp_fwd_entry_t * lfe)
{
- u32 next_index = va_arg (*args, u32);
+ dpo_proto_t dproto;
+
+ dproto = (ip_prefix_version (&lfe->key->rmt.ippref) == IP4 ?
+ FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6);
- switch (next_index)
+ lfe->src_fib_index = ip_dst_fib_add_route (lfe->eid_fib_index,
+ &lfe->key->rmt.ippref);
+
+ if (LISP_FWD_ENTRY_TYPE_NEGATIVE == lfe->type)
{
- case LISP_GPE_INPUT_NEXT_DROP:
- return format (s, "drop");
- case LISP_GPE_INPUT_NEXT_IP4_INPUT:
- return format (s, "ip4");
- case LISP_GPE_INPUT_NEXT_IP6_INPUT:
- return format (s, "ip6");
- case LISP_GPE_INPUT_NEXT_LISP_GPE_ENCAP:
- return format (s, "nsh-lisp-gpe");
- default:
- return format (s, "unknown %d", next_index);
+ dpo_id_t dpo = DPO_NULL;
+
+ switch (lfe->action)
+ {
+ case LISP_NO_ACTION:
+ /* TODO update timers? */
+ case LISP_FORWARD_NATIVE:
+ /* TODO check if route/next-hop for eid exists in fib and add
+ * more specific for the eid with the next-hop found */
+ case LISP_SEND_MAP_REQUEST:
+ /* insert tunnel that always sends map-request */
+ dpo_set (&dpo, DPO_LISP_CP, 0, dproto);
+ break;
+ case LISP_DROP:
+ /* for drop fwd entries, just add route, no need to add encap tunnel */
+ dpo_copy (&dpo, drop_dpo_get (dproto));
+ break;
+ }
+ ip_src_fib_add_route_w_dpo (lfe->src_fib_index,
+ &lfe->key->lcl.ippref, &dpo);
+ dpo_reset (&dpo);
+ }
+ else
+ {
+ ip_src_fib_add_route (lfe->src_fib_index,
+ &lfe->key->lcl.ippref, lfe->paths);
}
- return s;
}
-u8 * format_lisp_gpe_tunnel (u8 * s, va_list * args)
+static void
+delete_fib_entries (lisp_fwd_entry_t * lfe)
{
- lisp_gpe_tunnel_t * t = va_arg (*args, lisp_gpe_tunnel_t *);
- lisp_gpe_main_t * ngm = &lisp_gpe_main;
-
- s = format (s,
- "[%d] %U (src) %U (dst) fibs: encap %d, decap %d",
- t - ngm->tunnels,
- format_ip4_address, &t->src,
- format_ip4_address, &t->dst,
- t->encap_fib_index,
- t->decap_fib_index);
-
- s = format (s, " decap next %U\n", format_decap_next, t->decap_next_index);
- s = format (s, "lisp ver %d ", (t->ver_res>>6));
-
-#define _(n,v) if (t->flags & v) s = format (s, "%s-bit ", #n);
- foreach_lisp_gpe_flag_bit;
-#undef _
-
- s = format (s, "next_protocol %d ver_res %x res %x\n",
- t->next_protocol, t->ver_res, t->res);
-
- s = format (s, "iid %d (0x%x)\n", t->iid, t->iid);
- return s;
+ ip_src_dst_fib_del_route (lfe->src_fib_index,
+ &lfe->key->lcl.ippref,
+ lfe->eid_fib_index, &lfe->key->rmt.ippref);
}
-static u8 * format_lisp_gpe_name (u8 * s, va_list * args)
+static void
+gid_to_dp_address (gid_address_t * g, dp_address_t * d)
{
- u32 dev_instance = va_arg (*args, u32);
- return format (s, "lisp_gpe_tunnel%d", dev_instance);
+ switch (gid_address_type (g))
+ {
+ case GID_ADDR_IP_PREFIX:
+ case GID_ADDR_SRC_DST:
+ ip_prefix_copy (&d->ippref, &gid_address_ippref (g));
+ d->type = FID_ADDR_IP_PREF;
+ break;
+ case GID_ADDR_MAC:
+ default:
+ mac_copy (&d->mac, &gid_address_mac (g));
+ d->type = FID_ADDR_MAC;
+ break;
+ }
}
-static uword dummy_interface_tx (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+static lisp_fwd_entry_t *
+find_fwd_entry (lisp_gpe_main_t * lgm,
+ vnet_lisp_gpe_add_del_fwd_entry_args_t * a,
+ lisp_gpe_fwd_entry_key_t * key)
{
- clib_warning ("you shouldn't be here, leaking buffers...");
- return frame->n_vectors;
-}
+ uword *p;
-VNET_DEVICE_CLASS (lisp_gpe_device_class,static) = {
- .name = "LISP_GPE",
- .format_device_name = format_lisp_gpe_name,
- .format_tx_trace = format_lisp_gpe_encap_trace,
- .tx_function = dummy_interface_tx,
-};
+ memset (key, 0, sizeof (*key));
-static uword dummy_set_rewrite (vnet_main_t * vnm,
- u32 sw_if_index,
- u32 l3_type,
- void * dst_address,
- void * rewrite,
- uword max_rewrite_bytes)
+ if (GID_ADDR_IP_PREFIX == gid_address_type (&a->rmt_eid))
+ {
+ /*
+ * the ip version of the source is not set to ip6 when the
+ * source is all zeros. force it.
+ */
+ ip_prefix_version (&gid_address_ippref (&a->lcl_eid)) =
+ ip_prefix_version (&gid_address_ippref (&a->rmt_eid));
+ }
+
+ gid_to_dp_address (&a->rmt_eid, &key->rmt);
+ gid_to_dp_address (&a->lcl_eid, &key->lcl);
+ key->vni = a->vni;
+
+ p = hash_get_mem (lisp_gpe_fwd_entries, key);
+
+ if (NULL != p)
+ {
+ return (pool_elt_at_index (lisp_fwd_entry_pool, p[0]));
+ }
+ return (NULL);
+}
+
+static int
+lisp_gpe_fwd_entry_path_sort (void *a1, void *a2)
{
- return 0;
+ lisp_fwd_path_t *p1 = a1, *p2 = a2;
+
+ return (p1->priority - p2->priority);
}
-u8 * format_lisp_gpe_header_with_length (u8 * s, va_list * args)
+/**
+ * @brief Add/Delete LISP IP forwarding entry.
+ *
+ * creation of forwarding entries for IP LISP overlay:
+ *
+ * @param[in] lgm Reference to @ref lisp_gpe_main_t.
+ * @param[in] a Parameters for building the forwarding entry.
+ *
+ * @return 0 on success.
+ */
+static int
+add_ip_fwd_entry (lisp_gpe_main_t * lgm,
+ vnet_lisp_gpe_add_del_fwd_entry_args_t * a)
{
- lisp_gpe_header_t * h = va_arg (*args, lisp_gpe_header_t *);
- u32 max_header_bytes = va_arg (*args, u32);
- u32 header_bytes;
-
- header_bytes = sizeof (h[0]);
- if (max_header_bytes != 0 && header_bytes > max_header_bytes)
- return format (s, "gre-nsh header truncated");
-
- s = format (s, "flags: ");
-#define _(n,v) if (h->flags & v) s = format (s, "%s ", #n);
- foreach_lisp_gpe_flag_bit;
-#undef _
-
- s = format (s, "\n ver_res %d res %d next_protocol %d iid %d(%x)",
- h->ver_res, h->res, h->next_protocol,
- clib_net_to_host_u32 (h->iid),
- clib_net_to_host_u32 (h->iid));
- return s;
+ lisp_gpe_fwd_entry_key_t key;
+ lisp_fwd_entry_t *lfe;
+ fib_protocol_t fproto;
+
+ lfe = find_fwd_entry (lgm, a, &key);
+
+ if (NULL != lfe)
+ /* don't support updates */
+ return VNET_API_ERROR_INVALID_VALUE;
+
+ pool_get (lisp_fwd_entry_pool, lfe);
+ memset (lfe, 0, sizeof (*lfe));
+ lfe->key = clib_mem_alloc (sizeof (key));
+ memcpy (lfe->key, &key, sizeof (key));
+
+ hash_set_mem (lisp_gpe_fwd_entries, lfe->key, lfe - lisp_fwd_entry_pool);
+
+ fproto = (IP4 == ip_prefix_version (&fid_addr_ippref (&lfe->key->rmt)) ?
+ FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6);
+
+ lfe->type = (a->is_negative ?
+ LISP_FWD_ENTRY_TYPE_NEGATIVE : LISP_FWD_ENTRY_TYPE_NORMAL);
+ lfe->eid_table_id = a->table_id;
+ lfe->eid_fib_index = fib_table_find_or_create_and_lock (fproto,
+ lfe->eid_table_id);
+
+ if (LISP_FWD_ENTRY_TYPE_NEGATIVE != lfe->type)
+ {
+ lisp_fwd_path_t *path;
+ u32 index;
+
+ vec_validate (lfe->paths, vec_len (a->locator_pairs) - 1);
+
+ vec_foreach_index (index, a->locator_pairs)
+ {
+ path = &lfe->paths[index];
+
+ path->priority = a->locator_pairs[index].priority;
+ path->weight = a->locator_pairs[index].weight;
+
+ path->lisp_adj =
+ lisp_gpe_adjacency_find_or_create_and_lock (&a->locator_pairs
+ [index],
+ lfe->eid_table_id,
+ lfe->key->vni);
+ }
+ vec_sort_with_function (lfe->paths, lisp_gpe_fwd_entry_path_sort);
+ }
+
+ create_fib_entries (lfe);
+
+ return (0);
}
-VNET_HW_INTERFACE_CLASS (lisp_gpe_hw_class) = {
- .name = "LISP_GPE",
- .format_header = format_lisp_gpe_header_with_length,
- .set_rewrite = dummy_set_rewrite,
-};
+static void
+del_ip_fwd_entry_i (lisp_fwd_entry_t * lfe)
+{
+ lisp_fwd_path_t *path;
+ fib_protocol_t fproto;
+
+ vec_foreach (path, lfe->paths)
+ {
+ lisp_gpe_adjacency_unlock (path->lisp_adj);
+ }
+
+ delete_fib_entries (lfe);
+
+ fproto = (IP4 == ip_prefix_version (&fid_addr_ippref (&lfe->key->rmt)) ?
+ FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6);
+ fib_table_unlock (lfe->eid_fib_index, fproto);
-#define foreach_copy_field \
-_(src.as_u32) \
-_(dst.as_u32) \
-_(encap_fib_index) \
-_(decap_fib_index) \
-_(decap_next_index) \
-_(flags) \
-_(next_protocol) \
-_(ver_res) \
-_(res) \
-_(iid)
-
-static int lisp_gpe_rewrite (lisp_gpe_tunnel_t * t)
+ hash_unset_mem (lisp_gpe_fwd_entries, lfe->key);
+ clib_mem_free (lfe->key);
+ pool_put (lisp_fwd_entry_pool, lfe);
+}
+
+/**
+ * @brief Add/Delete LISP IP forwarding entry.
+ *
+ * removal of forwarding entries for IP LISP overlay:
+ *
+ * @param[in] lgm Reference to @ref lisp_gpe_main_t.
+ * @param[in] a Parameters for building the forwarding entry.
+ *
+ * @return 0 on success.
+ */
+static int
+del_ip_fwd_entry (lisp_gpe_main_t * lgm,
+ vnet_lisp_gpe_add_del_fwd_entry_args_t * a)
{
- u8 *rw = 0;
- ip4_header_t * ip0;
- lisp_gpe_header_t * lisp0;
- ip4_udp_lisp_gpe_header_t * h0;
- int len;
-
- len = sizeof (*h0);
-
- vec_validate_aligned (rw, len-1, CLIB_CACHE_LINE_BYTES);
-
- h0 = (ip4_udp_lisp_gpe_header_t *) rw;
-
- /* Fixed portion of the (outer) ip4 header */
- ip0 = &h0->ip4;
- ip0->ip_version_and_header_length = 0x45;
- ip0->ttl = 254;
- ip0->protocol = IP_PROTOCOL_UDP;
-
- /* we fix up the ip4 header length and checksum after-the-fact */
- ip0->src_address.as_u32 = t->src.as_u32;
- ip0->dst_address.as_u32 = t->dst.as_u32;
- ip0->checksum = ip4_header_checksum (ip0);
-
- /* UDP header, randomize src port on something, maybe? */
- h0->udp.src_port = clib_host_to_net_u16 (4341);
- h0->udp.dst_port = clib_host_to_net_u16 (UDP_DST_PORT_lisp_gpe);
-
- /* LISP-gpe header */
- lisp0 = &h0->lisp;
-
- lisp0->flags = t->flags;
- lisp0->ver_res = t->ver_res;
- lisp0->res = t->res;
- lisp0->next_protocol = t->next_protocol;
- lisp0->iid = clib_host_to_net_u32 (t->iid);
-
- t->rewrite = rw;
+ lisp_gpe_fwd_entry_key_t key;
+ lisp_fwd_entry_t *lfe;
+
+ lfe = find_fwd_entry (lgm, a, &key);
+
+ if (NULL == lfe)
+ /* no such entry */
+ return VNET_API_ERROR_INVALID_VALUE;
+
+ del_ip_fwd_entry_i (lfe);
+
return (0);
}
-int vnet_lisp_gpe_add_del_tunnel
-(vnet_lisp_gpe_add_del_tunnel_args_t *a, u32 * sw_if_indexp)
+static void
+make_mac_fib_key (BVT (clib_bihash_kv) * kv, u16 bd_index, u8 src_mac[6],
+ u8 dst_mac[6])
+{
+ kv->key[0] = (((u64) bd_index) << 48) | mac_to_u64 (dst_mac);
+ kv->key[1] = mac_to_u64 (src_mac);
+ kv->key[2] = 0;
+}
+
+/**
+ * @brief Lookup L2 SD FIB entry
+ *
+ * Does a vni + dest + source lookup in the L2 LISP FIB. If the lookup fails
+ * it tries a second time with source set to 0 (i.e., a simple dest lookup).
+ *
+ * @param[in] lgm Reference to @ref lisp_gpe_main_t.
+ * @param[in] bd_index Bridge domain index.
+ * @param[in] src_mac Source mac address.
+ * @param[in] dst_mac Destination mac address.
+ *
+ * @return index of mapping matching the lookup key.
+ */
+index_t
+lisp_l2_fib_lookup (lisp_gpe_main_t * lgm, u16 bd_index, u8 src_mac[6],
+ u8 dst_mac[6])
{
- lisp_gpe_main_t * ngm = &lisp_gpe_main;
- lisp_gpe_tunnel_t *t = 0;
- vnet_main_t * vnm = ngm->vnet_main;
- vnet_hw_interface_t * hi;
- uword * p;
- u32 hw_if_index = ~0;
- u32 sw_if_index = ~0;
int rv;
- lisp_gpe_tunnel_key_t key, *key_copy;
- hash_pair_t *hp;
-
- key.src = a->src.as_u32;
- key.iid = clib_host_to_net_u32(a->iid);
-
- p = hash_get_mem (ngm->lisp_gpe_tunnel_by_key, &key);
-
- if (a->is_add)
+ BVT (clib_bihash_kv) kv, value;
+
+ make_mac_fib_key (&kv, bd_index, src_mac, dst_mac);
+ rv = BV (clib_bihash_search_inline_2) (&lgm->l2_fib, &kv, &value);
+
+ /* no match, try with src 0, catch all for dst */
+ if (rv != 0)
{
- /* adding a tunnel: tunnel must not already exist */
- if (p)
- return VNET_API_ERROR_INVALID_VALUE;
-
- if (a->decap_next_index >= LISP_GPE_INPUT_N_NEXT)
- return VNET_API_ERROR_INVALID_DECAP_NEXT;
-
- pool_get_aligned (ngm->tunnels, t, CLIB_CACHE_LINE_BYTES);
- memset (t, 0, sizeof (*t));
-
- /* copy from arg structure */
-#define _(x) t->x = a->x;
- foreach_copy_field;
-#undef _
-
- rv = lisp_gpe_rewrite (t);
-
- if (rv)
- {
- pool_put (ngm->tunnels, t);
- return rv;
- }
-
- key_copy = clib_mem_alloc (sizeof (*key_copy));
- memcpy (key_copy, &key, sizeof (*key_copy));
-
- hash_set_mem (ngm->lisp_gpe_tunnel_by_key, key_copy,
- t - ngm->tunnels);
-
- if (vec_len (ngm->free_lisp_gpe_tunnel_hw_if_indices) > 0)
- {
- hw_if_index = ngm->free_lisp_gpe_tunnel_hw_if_indices
- [vec_len (ngm->free_lisp_gpe_tunnel_hw_if_indices)-1];
- _vec_len (ngm->free_lisp_gpe_tunnel_hw_if_indices) -= 1;
-
- hi = vnet_get_hw_interface (vnm, hw_if_index);
- hi->dev_instance = t - ngm->tunnels;
- hi->hw_instance = hi->dev_instance;
- }
- else
- {
- hw_if_index = vnet_register_interface
- (vnm, lisp_gpe_device_class.index, t - ngm->tunnels,
- lisp_gpe_hw_class.index, t - ngm->tunnels);
- hi = vnet_get_hw_interface (vnm, hw_if_index);
- hi->output_node_index = lisp_gpe_encap_node.index;
- }
-
- t->hw_if_index = hw_if_index;
- t->sw_if_index = sw_if_index = hi->sw_if_index;
-
- vnet_sw_interface_set_flags (vnm, hi->sw_if_index,
- VNET_SW_INTERFACE_FLAG_ADMIN_UP);
+ kv.key[1] = 0;
+ rv = BV (clib_bihash_search_inline_2) (&lgm->l2_fib, &kv, &value);
+ if (rv == 0)
+ return value.value;
}
- else
- {
- /* deleting a tunnel: tunnel must exist */
- if (!p)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
- t = pool_elt_at_index (ngm->tunnels, p[0]);
+ return lisp_gpe_main.l2_lb_miss;
+}
- vnet_sw_interface_set_flags (vnm, t->sw_if_index, 0 /* down */);
- vec_add1 (ngm->free_lisp_gpe_tunnel_hw_if_indices, t->hw_if_index);
+/**
+ * @brief Add/del L2 SD FIB entry
+ *
+ * Inserts value in L2 FIB keyed by vni + dest + source. If entry is
+ * overwritten the associated value is returned.
+ *
+ * @param[in] lgm Reference to @ref lisp_gpe_main_t.
+ * @param[in] bd_index Bridge domain index.
+ * @param[in] src_mac Source mac address.
+ * @param[in] dst_mac Destination mac address.
+ * @param[in] val Value to add.
+ * @param[in] is_add Add/del flag.
+ *
+ * @return ~0 or value of overwritten entry.
+ */
+u32
+lisp_l2_fib_add_del_entry (lisp_gpe_main_t * lgm, u16 bd_index, u8 src_mac[6],
+ u8 dst_mac[6], u32 val, u8 is_add)
+{
+ BVT (clib_bihash_kv) kv, value;
+ u32 old_val = ~0;
- hp = hash_get_pair (ngm->lisp_gpe_tunnel_by_key, &key);
- key_copy = (void *)(hp->key);
- hash_unset_mem (ngm->lisp_gpe_tunnel_by_key, &key);
- clib_mem_free (key_copy);
+ make_mac_fib_key (&kv, bd_index, src_mac, dst_mac);
- vec_free (t->rewrite);
- pool_put (ngm->tunnels, t);
+ if (BV (clib_bihash_search) (&lgm->l2_fib, &kv, &value) == 0)
+ old_val = value.value;
+
+ if (!is_add)
+ BV (clib_bihash_add_del) (&lgm->l2_fib, &kv, 0 /* is_add */ );
+ else
+ {
+ kv.value = val;
+ BV (clib_bihash_add_del) (&lgm->l2_fib, &kv, 1 /* is_add */ );
}
+ return old_val;
+}
- if (sw_if_indexp)
- *sw_if_indexp = sw_if_index;
+static void
+l2_fib_init (lisp_gpe_main_t * lgm)
+{
+ BV (clib_bihash_init) (&lgm->l2_fib, "l2 fib",
+ 1 << max_log2 (L2_FIB_DEFAULT_HASH_NUM_BUCKETS),
+ L2_FIB_DEFAULT_HASH_MEMORY_SIZE);
+
+ /*
+ * the result from a 'miss' in a L2 Table
+ */
+ lgm->l2_lb_miss = load_balance_create (1, DPO_PROTO_IP4, 0);
+ load_balance_set_bucket (lgm->l2_lb_miss, 0, drop_dpo_get (DPO_PROTO_IP4));
+}
+/**
+ * @brief Add/Delete LISP L2 forwarding entry.
+ *
+ * Coordinates the creation/removal of forwarding entries for L2 LISP overlay:
+ * creates lisp-gpe tunnel and injects new entry in Source/Dest L2 FIB.
+ *
+ * @param[in] lgm Reference to @ref lisp_gpe_main_t.
+ * @param[in] a Parameters for building the forwarding entry.
+ *
+ * @return 0 on success.
+ */
+static int
+add_del_l2_fwd_entry (lisp_gpe_main_t * lgm,
+ vnet_lisp_gpe_add_del_fwd_entry_args_t * a)
+{
+ /* lisp_gpe_fwd_entry_key_t key; */
+ /* lisp_fwd_entry_t *lfe; */
+ /* fib_protocol_t fproto; */
+ /* uword *bd_indexp; */
+
+ /* bd_indexp = hash_get (bdm->bd_index_by_bd_id, a->bd_id); */
+ /* if (!bd_indexp) */
+ /* { */
+ /* clib_warning ("bridge domain %d doesn't exist", a->bd_id); */
+ /* return -1; */
+ /* } */
+
+ /* lfe = find_fwd_entry(lgm, a, &key); */
+
+ /* if (NULL != lfe) */
+ /* /\* don't support updates *\/ */
+ /* return VNET_API_ERROR_INVALID_VALUE; */
+
+ /* int rv; */
+ /* u32 tun_index; */
+ /* fib_node_index_t old_path_list; */
+ /* bd_main_t *bdm = &bd_main; */
+ /* fib_route_path_t *rpaths; */
+ /* lisp_gpe_tunnel_t *t; */
+ /* const dpo_id_t *dpo; */
+ /* index_t lbi; */
+
+ /* /\* create tunnel *\/ */
+ /* rv = add_del_ip_tunnel (a, 1 /\* is_l2 *\/ , &tun_index, NULL); */
+ /* if (rv) */
+ /* return rv; */
+
+ /* bd_indexp = hash_get (bdm->bd_index_by_bd_id, a->bd_id); */
+ /* if (!bd_indexp) */
+ /* { */
+ /* clib_warning ("bridge domain %d doesn't exist", a->bd_id); */
+ /* return -1; */
+ /* } */
+
+ /* t = pool_elt_at_index (lgm->tunnels, tun_index); */
+ /* old_path_list = t->l2_path_list; */
+
+ /* if (LISP_NO_ACTION == t->action) */
+ /* { */
+ /* rpaths = lisp_gpe_mk_paths_for_sub_tunnels (t); */
+
+ /* t->l2_path_list = fib_path_list_create (FIB_PATH_LIST_FLAG_NONE, */
+ /* rpaths); */
+
+ /* vec_free (rpaths); */
+ /* fib_path_list_lock (t->l2_path_list); */
+
+ /* dpo = fib_path_list_contribute_forwarding (t->l2_path_list, */
+ /* FIB_FORW_CHAIN_TYPE_UNICAST_IP); */
+ /* lbi = dpo->dpoi_index; */
+ /* } */
+ /* else if (LISP_SEND_MAP_REQUEST == t->action) */
+ /* { */
+ /* lbi = lgm->l2_lb_cp_lkup; */
+ /* } */
+ /* else */
+ /* { */
+ /* lbi = lgm->l2_lb_miss; */
+ /* } */
+ /* fib_path_list_unlock (old_path_list); */
+
+ /* /\* add entry to l2 lisp fib *\/ */
+ /* lisp_l2_fib_add_del_entry (lgm, bd_indexp[0], gid_address_mac (&a->lcl_eid), */
+ /* gid_address_mac (&a->rmt_eid), lbi, a->is_add); */
return 0;
}
-static u32 fib_index_from_fib_id (u32 fib_id)
+/**
+ * @brief Forwarding entry create/remove dispatcher.
+ *
+ * Calls l2 or l3 forwarding entry add/del function based on input data.
+ *
+ * @param[in] a Forwarding entry parameters.
+ * @param[out] hw_if_indexp NOT USED
+ *
+ * @return 0 on success.
+ */
+int
+vnet_lisp_gpe_add_del_fwd_entry (vnet_lisp_gpe_add_del_fwd_entry_args_t * a,
+ u32 * hw_if_indexp)
{
- ip4_main_t * im = &ip4_main;
- uword * p;
-
- p = hash_get (im->fib_index_by_table_id, fib_id);
- if (!p)
- return ~0;
+ lisp_gpe_main_t *lgm = &lisp_gpe_main;
+ u8 type;
- return p[0];
-}
+ if (vnet_lisp_gpe_enable_disable_status () == 0)
+ {
+ clib_warning ("LISP is disabled!");
+ return VNET_API_ERROR_LISP_DISABLED;
+ }
-static uword unformat_decap_next (unformat_input_t * input, va_list * args)
-{
- u32 * result = va_arg (*args, u32 *);
- u32 tmp;
-
- if (unformat (input, "drop"))
- *result = LISP_GPE_INPUT_NEXT_DROP;
- else if (unformat (input, "ip4"))
- *result = LISP_GPE_INPUT_NEXT_IP4_INPUT;
- else if (unformat (input, "ip6"))
- *result = LISP_GPE_INPUT_NEXT_IP6_INPUT;
- else if (unformat (input, "ethernet"))
- *result = LISP_GPE_INPUT_NEXT_IP6_INPUT;
- else if (unformat (input, "lisp-gpe"))
- *result = LISP_GPE_INPUT_NEXT_LISP_GPE_ENCAP;
- else if (unformat (input, "%d", &tmp))
- *result = tmp;
- else
- return 0;
- return 1;
+ type = gid_address_type (&a->rmt_eid);
+ switch (type)
+ {
+ case GID_ADDR_IP_PREFIX:
+ if (a->is_add)
+ return add_ip_fwd_entry (lgm, a);
+ else
+ return del_ip_fwd_entry (lgm, a);
+ break;
+ case GID_ADDR_MAC:
+ return add_del_l2_fwd_entry (lgm, a);
+ default:
+ clib_warning ("Forwarding entries for type %d not supported!", type);
+ return -1;
+ }
}
+/** CLI command to add/del forwarding entry. */
static clib_error_t *
-lisp_gpe_add_del_tunnel_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
+lisp_gpe_add_del_fwd_entry_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
{
- unformat_input_t _line_input, * line_input = &_line_input;
- ip4_address_t src, dst;
+ unformat_input_t _line_input, *line_input = &_line_input;
u8 is_add = 1;
- u8 src_set = 0;
- u8 dst_set = 0;
- u32 encap_fib_index = 0;
- u32 decap_fib_index = 0;
- u8 next_protocol = LISP_GPE_NEXT_PROTOCOL_IP4;
- u32 decap_next_index = LISP_GPE_INPUT_NEXT_IP4_INPUT;
- u8 flags = LISP_GPE_FLAGS_P;
- u8 ver_res = 0;
- u8 res = 0;
- u32 iid = 0;
- u8 iid_set = 0;
- u32 tmp;
+ ip_address_t lloc, rloc;
+ clib_error_t *error = 0;
+ gid_address_t _reid, *reid = &_reid, _leid, *leid = &_leid;
+ u8 reid_set = 0, leid_set = 0, is_negative = 0, vrf_set = 0, vni_set = 0;
+ u32 vni, vrf, action = ~0, p, w;
+ locator_pair_t pair, *pairs = 0;
int rv;
- vnet_lisp_gpe_add_del_tunnel_args_t _a, * a = &_a;
-
+
/* Get a line of input. */
- if (! unformat_user (input, unformat_line_input, line_input))
+ if (!unformat_user (input, unformat_line_input, line_input))
return 0;
- while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) {
- if (unformat (line_input, "del"))
- is_add = 0;
- else if (unformat (line_input, "src %U",
- unformat_ip4_address, &src))
- src_set = 1;
- else if (unformat (line_input, "dst %U",
- unformat_ip4_address, &dst))
- dst_set = 1;
- else if (unformat (line_input, "encap-vrf-id %d", &tmp))
- {
- encap_fib_index = fib_index_from_fib_id (tmp);
- if (encap_fib_index == ~0)
- return clib_error_return (0, "nonexistent encap fib id %d", tmp);
- }
- else if (unformat (line_input, "decap-vrf-id %d", &tmp))
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "del"))
+ is_add = 0;
+ else if (unformat (line_input, "add"))
+ is_add = 1;
+ else if (unformat (line_input, "leid %U", unformat_gid_address, leid))
+ {
+ leid_set = 1;
+ }
+ else if (unformat (line_input, "reid %U", unformat_gid_address, reid))
+ {
+ reid_set = 1;
+ }
+ else if (unformat (line_input, "vni %u", &vni))
+ {
+ gid_address_vni (leid) = vni;
+ gid_address_vni (reid) = vni;
+ vni_set = 1;
+ }
+ else if (unformat (line_input, "vrf %u", &vrf))
+ {
+ vrf_set = 1;
+ }
+ else if (unformat (line_input, "negative action %U",
+ unformat_negative_mapping_action, &action))
+ {
+ is_negative = 1;
+ }
+ else if (unformat (line_input, "loc-pair %U %U p %d w %d",
+ unformat_ip_address, &lloc,
+ unformat_ip_address, &rloc, &p, &w))
+ {
+ pair.lcl_loc = lloc;
+ pair.rmt_loc = rloc;
+ pair.priority = p;
+ pair.weight = w;
+ vec_add1 (pairs, pair);
+ }
+ else
+ {
+ error = unformat_parse_error (line_input);
+ goto done;
+ }
+ }
+ unformat_free (line_input);
+
+ if (!vni_set || !vrf_set)
+ {
+ error = clib_error_return (0, "vni and vrf must be set!");
+ goto done;
+ }
+
+ if (!reid_set)
+ {
+ error = clib_error_return (0, "remote eid must be set!");
+ goto done;
+ }
+
+ if (is_negative)
+ {
+ if (~0 == action)
+ {
+ error = clib_error_return (0, "no action set for negative tunnel!");
+ goto done;
+ }
+ }
+ else
+ {
+ if (vec_len (pairs) == 0)
+ {
+ error = clib_error_return (0, "expected ip4/ip6 locators.");
+ goto done;
+ }
+ }
+
+ if (!leid_set)
+ {
+ /* if leid not set, make sure it's the same AFI like reid */
+ gid_address_type (leid) = gid_address_type (reid);
+ if (GID_ADDR_IP_PREFIX == gid_address_type (reid))
+ gid_address_ip_version (leid) = gid_address_ip_version (reid);
+ }
+
+ /* add fwd entry */
+ vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
+ memset (a, 0, sizeof (a[0]));
+
+ a->is_add = is_add;
+ a->is_negative = is_negative;
+ a->vni = vni;
+ a->table_id = vrf;
+ gid_address_copy (&a->lcl_eid, leid);
+ gid_address_copy (&a->rmt_eid, reid);
+ a->locator_pairs = pairs;
+
+ rv = vnet_lisp_gpe_add_del_fwd_entry (a, 0);
+ if (0 != rv)
+ {
+ error = clib_error_return (0, "failed to %s gpe tunnel!",
+ is_add ? "add" : "delete");
+ }
+
+done:
+ vec_free (pairs);
+ return error;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (lisp_gpe_add_del_fwd_entry_command, static) = {
+ .path = "lisp gpe entry",
+ .short_help = "lisp gpe entry add/del vni <vni> vrf <vrf> [leid <leid>]"
+ "reid <reid> [loc-pair <lloc> <rloc> p <priority> w <weight>] "
+ "[negative action <action>]",
+ .function = lisp_gpe_add_del_fwd_entry_command_fn,
+};
+/* *INDENT-ON* */
+
+static u8 *
+format_lisp_fwd_path (u8 * s, va_list ap)
+{
+ lisp_fwd_path_t *lfp = va_arg (ap, lisp_fwd_path_t *);
+
+ s = format (s, "pirority:%d weight:%d ", lfp->priority, lfp->weight);
+ s = format (s, "adj:[%U]\n",
+ format_lisp_gpe_adjacency,
+ lisp_gpe_adjacency_get (lfp->lisp_adj),
+ LISP_GPE_ADJ_FORMAT_FLAG_NONE);
+
+ return (s);
+}
+
+static u8 *
+format_lisp_gpe_fwd_entry (u8 * s, va_list ap)
+{
+ lisp_fwd_entry_t *lfe = va_arg (ap, lisp_fwd_entry_t *);
+
+ s = format (s, "VNI:%d VRF:%d EID: %U -> %U",
+ lfe->key->vni, lfe->eid_table_id,
+ format_fid_address, &lfe->key->lcl,
+ format_fid_address, &lfe->key->rmt);
+ if (LISP_FWD_ENTRY_TYPE_NEGATIVE == lfe->type)
+ {
+ s = format (s, "\n Negative - action:%U",
+ format_negative_mapping_action, lfe->action);
+ }
+ else
+ {
+ lisp_fwd_path_t *path;
+
+ s = format (s, "\n via:");
+ vec_foreach (path, lfe->paths)
{
- decap_fib_index = fib_index_from_fib_id (tmp);
- if (decap_fib_index == ~0)
- return clib_error_return (0, "nonexistent decap fib id %d", tmp);
+ s = format (s, "\n %U", format_lisp_fwd_path, path);
}
- else if (unformat (line_input, "decap-next %U", unformat_decap_next,
- &decap_next_index))
- ;
- else if (unformat(line_input, "next-ip4"))
- next_protocol = 1;
- else if (unformat(line_input, "next-ip6"))
- next_protocol = 2;
- else if (unformat(line_input, "next-ethernet"))
- next_protocol = 3;
- else if (unformat(line_input, "next-nsh"))
- next_protocol = 4;
- /* Allow the user to specify anything they want in the LISP hdr */
- else if (unformat (line_input, "ver_res %x", &tmp))
- ver_res = tmp;
- else if (unformat (line_input, "res %x", &tmp))
- res = tmp;
- else if (unformat (line_input, "flags %x", &tmp))
- flags = tmp;
- else if (unformat (line_input, "n-bit"))
- flags |= LISP_GPE_FLAGS_N;
- else if (unformat (line_input, "l-bit"))
- flags |= LISP_GPE_FLAGS_L;
- else if (unformat (line_input, "e-bit"))
- flags |= LISP_GPE_FLAGS_E;
- else if (unformat (line_input, "v-bit"))
- flags |= LISP_GPE_FLAGS_V;
- else if (unformat (line_input, "i-bit"))
- flags |= LISP_GPE_FLAGS_V;
- else if (unformat (line_input, "not-p-bit"))
- flags &= ~LISP_GPE_FLAGS_P;
- else if (unformat (line_input, "p-bit"))
- flags |= LISP_GPE_FLAGS_P;
- else if (unformat (line_input, "o-bit"))
- flags |= LISP_GPE_FLAGS_O;
- else if (unformat (line_input, "iidx %x", &iid))
- iid_set = 1;
- else if (unformat (line_input, "iid %d", &iid))
- iid_set = 1;
- else
- return clib_error_return (0, "parse error: '%U'",
- format_unformat_error, line_input);
- }
+ }
- unformat_free (line_input);
+ return (s);
+}
- if (src_set == 0)
- return clib_error_return (0, "tunnel src address not specified");
+static clib_error_t *
+lisp_gpe_fwd_entry_show (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ lisp_fwd_entry_t *lfe;
- if (dst_set == 0)
- return clib_error_return (0, "tunnel dst address not specified");
+/* *INDENT-OFF* */
+ pool_foreach (lfe, lisp_fwd_entry_pool,
+ ({
+ vlib_cli_output (vm, "%U", format_lisp_gpe_fwd_entry, lfe);
+ }));
+/* *INDENT-ON* */
+
+ return (NULL);
+}
- if (iid_set == 0)
- return clib_error_return (0, "iid not specified");
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (lisp_gpe_fwd_entry_show_command, static) = {
+ .path = "show lisp gpe entry",
+ .short_help = "show lisp gpe entry vni <vni> vrf <vrf> [leid <leid>] reid <reid>",
+ .function = lisp_gpe_fwd_entry_show,
+};
+/* *INDENT-ON* */
- memset (a, 0, sizeof (*a));
+/** Check if LISP-GPE is enabled. */
+u8
+vnet_lisp_gpe_enable_disable_status (void)
+{
+ lisp_gpe_main_t *lgm = &lisp_gpe_main;
- a->is_add = is_add;
+ return lgm->is_en;
+}
-#define _(x) a->x = x;
- foreach_copy_field;
-#undef _
-
- rv = vnet_lisp_gpe_add_del_tunnel (a, 0 /* hw_if_indexp */);
+/** Enable/disable LISP-GPE. */
+clib_error_t *
+vnet_lisp_gpe_enable_disable (vnet_lisp_gpe_enable_disable_args_t * a)
+{
+ lisp_gpe_main_t *lgm = &lisp_gpe_main;
- switch(rv)
+ if (a->is_en)
{
- case 0:
- break;
- case VNET_API_ERROR_INVALID_DECAP_NEXT:
- return clib_error_return (0, "invalid decap-next...");
+ lgm->is_en = 1;
+ }
+ else
+ {
+ CLIB_UNUSED (uword * val);
+ hash_pair_t *p;
+ u32 *dp_tables = 0, *dp_table;
+ vnet_lisp_gpe_add_del_iface_args_t _ai, *ai = &_ai;
+ lisp_fwd_entry_t *lfe;
+
+ /* remove all entries */
+ /* *INDENT-OFF* */
+ pool_foreach (lfe, lisp_fwd_entry_pool,
+ ({
+ del_ip_fwd_entry_i (lfe);
+ }));
+ /* *INDENT-ON* */
+
+ /* disable all l3 ifaces */
+
+ /* *INDENT-OFF* */
+ hash_foreach_pair(p, lgm->l3_ifaces.hw_if_index_by_dp_table, ({
+ vec_add1(dp_tables, p->key);
+ }));
+ /* *INDENT-ON* */
+
+ vec_foreach (dp_table, dp_tables)
+ {
+ ai->is_add = 0;
+ ai->table_id = dp_table[0];
+ ai->is_l2 = 0;
- case VNET_API_ERROR_TUNNEL_EXIST:
- return clib_error_return (0, "tunnel already exists...");
+ /* disables interface and removes defaults */
+ vnet_lisp_gpe_add_del_iface (ai, 0);
+ }
- case VNET_API_ERROR_NO_SUCH_ENTRY:
- return clib_error_return (0, "tunnel does not exist...");
+ /* disable all l2 ifaces */
+ _vec_len (dp_tables) = 0;
- default:
- return clib_error_return
- (0, "vnet_lisp_gpe_add_del_tunnel returned %d", rv);
+ /* *INDENT-OFF* */
+ hash_foreach_pair(p, lgm->l2_ifaces.hw_if_index_by_dp_table, ({
+ vec_add1(dp_tables, p->key);
+ }));
+ /* *INDENT-ON* */
+
+ vec_foreach (dp_table, dp_tables)
+ {
+ ai->is_add = 0;
+ ai->bd_id = dp_table[0];
+ ai->is_l2 = 1;
+
+ /* disables interface and removes defaults */
+ vnet_lisp_gpe_add_del_iface (ai, 0);
+ }
+
+ vec_free (dp_tables);
+ lgm->is_en = 0;
}
return 0;
}
-VLIB_CLI_COMMAND (create_lisp_gpe_tunnel_command, static) = {
- .path = "lisp gpe tunnel",
- .short_help =
- "lisp gpe tunnel src <ip4-addr> dst <ip4-addr> iidx <0xnn> | iid <nn>\n"
- " [encap-fib-id <nn>] [decap-fib-id <nn>]\n"
- " [n-bit][l-bit][e-bit][v-bit][i-bit][p-bit][not-p-bit][o-bit]\n"
- " [next-ip4][next-ip6][next-ethernet][next-nsh]\n"
- " [decap-next [ip4|ip6|ethernet|nsh-encap|<nn>]][del]\n",
- .function = lisp_gpe_add_del_tunnel_command_fn,
+/** CLI command to enable/disable LISP-GPE. */
+static clib_error_t *
+lisp_gpe_enable_disable_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ unformat_input_t _line_input, *line_input = &_line_input;
+ u8 is_en = 1;
+ vnet_lisp_gpe_enable_disable_args_t _a, *a = &_a;
+
+ /* Get a line of input. */
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return 0;
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "enable"))
+ is_en = 1;
+ else if (unformat (line_input, "disable"))
+ is_en = 0;
+ else
+ {
+ return clib_error_return (0, "parse error: '%U'",
+ format_unformat_error, line_input);
+ }
+ }
+ a->is_en = is_en;
+ return vnet_lisp_gpe_enable_disable (a);
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (enable_disable_lisp_gpe_command, static) = {
+ .path = "lisp gpe",
+ .short_help = "lisp gpe [enable|disable]",
+ .function = lisp_gpe_enable_disable_command_fn,
};
+/* *INDENT-ON* */
+/** CLI command to show LISP-GPE interfaces. */
static clib_error_t *
-show_lisp_gpe_tunnel_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
+lisp_show_iface_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
{
- lisp_gpe_main_t * ngm = &lisp_gpe_main;
- lisp_gpe_tunnel_t * t;
-
- if (pool_elts (ngm->tunnels) == 0)
- vlib_cli_output (vm, "No lisp-gpe tunnels configured...");
+ lisp_gpe_main_t *lgm = &lisp_gpe_main;
+ hash_pair_t *p;
- pool_foreach (t, ngm->tunnels,
- ({
- vlib_cli_output (vm, "%U", format_lisp_gpe_tunnel, t);
+ vlib_cli_output (vm, "%=10s%=12s", "vrf", "hw_if_index");
+
+ /* *INDENT-OFF* */
+ hash_foreach_pair (p, lgm->l3_ifaces.hw_if_index_by_dp_table, ({
+ vlib_cli_output (vm, "%=10d%=10d", p->key, p->value[0]);
}));
-
+ /* *INDENT-ON* */
+
+ if (0 != lgm->l2_ifaces.hw_if_index_by_dp_table)
+ {
+ vlib_cli_output (vm, "%=10s%=12s", "bd_id", "hw_if_index");
+ /* *INDENT-OFF* */
+ hash_foreach_pair (p, lgm->l2_ifaces.hw_if_index_by_dp_table, ({
+ vlib_cli_output (vm, "%=10d%=10d", p->key, p->value[0]);
+ }));
+ /* *INDENT-ON* */
+ }
return 0;
}
-VLIB_CLI_COMMAND (show_lisp_gpe_tunnel_command, static) = {
- .path = "show lisp gpe tunnel",
- .function = show_lisp_gpe_tunnel_command_fn,
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (lisp_show_iface_command) = {
+ .path = "show lisp gpe interface",
+ .short_help = "show lisp gpe interface",
+ .function = lisp_show_iface_command_fn,
};
+/* *INDENT-ON* */
+
+/** Format LISP-GPE status. */
+u8 *
+format_vnet_lisp_gpe_status (u8 * s, va_list * args)
+{
+ lisp_gpe_main_t *lgm = &lisp_gpe_main;
+ return format (s, "%s", lgm->is_en ? "enabled" : "disabled");
+}
-clib_error_t *lisp_gpe_init (vlib_main_t *vm)
+
+/** LISP-GPE init function. */
+clib_error_t *
+lisp_gpe_init (vlib_main_t * vm)
{
- lisp_gpe_main_t *ngm = &lisp_gpe_main;
-
- ngm->vnet_main = vnet_get_main();
- ngm->vlib_main = vm;
-
- ngm->lisp_gpe_tunnel_by_key
- = hash_create_mem (0, sizeof(lisp_gpe_tunnel_key_t), sizeof (uword));
-
- udp_register_dst_port (vm, UDP_DST_PORT_lisp_gpe,
- lisp_gpe_input_node.index, 1 /* is_ip4 */);
+ lisp_gpe_main_t *lgm = &lisp_gpe_main;
+ clib_error_t *error = 0;
+
+ if ((error = vlib_call_init_function (vm, ip_main_init)))
+ return error;
+
+ if ((error = vlib_call_init_function (vm, ip4_lookup_init)))
+ return error;
+
+ lgm->vnet_main = vnet_get_main ();
+ lgm->vlib_main = vm;
+ lgm->im4 = &ip4_main;
+ lgm->im6 = &ip6_main;
+ lgm->lm4 = &ip4_main.lookup_main;
+ lgm->lm6 = &ip6_main.lookup_main;
+
+ lisp_gpe_fwd_entries = hash_create_mem (0,
+ sizeof (lisp_gpe_fwd_entry_key_t),
+ sizeof (uword));
+
+ l2_fib_init (lgm);
+
+ udp_register_dst_port (vm, UDP_DST_PORT_lisp_gpe,
+ lisp_gpe_ip4_input_node.index, 1 /* is_ip4 */ );
+ udp_register_dst_port (vm, UDP_DST_PORT_lisp_gpe6,
+ lisp_gpe_ip6_input_node.index, 0 /* is_ip4 */ );
return 0;
}
-VLIB_INIT_FUNCTION(lisp_gpe_init);
-
+VLIB_INIT_FUNCTION (lisp_gpe_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
Code Review / vpp.git / blobdiff