lisp_gpe_main_t lisp_gpe_main;
-/* avoids calling route callbacks for src fib */
-static void
-ip4_sd_fib_set_adj_index (lisp_gpe_main_t * lgm, ip4_fib_t * fib, u32 flags,
- u32 dst_address_u32, u32 dst_address_length,
- u32 adj_index)
-{
- ip_lookup_main_t * lm = lgm->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;
-}
-
-/* copied from ip4_forward since it's static */
-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);
-}
-
-void
-ip4_sd_fib_add_del_src_route (lisp_gpe_main_t * lgm,
- ip4_add_del_route_args_t * a)
+static int
+lisp_gpe_rewrite (lisp_gpe_tunnel_t * t)
{
- ip_lookup_main_t * lm = lgm->lookup_main;
- ip4_fib_t * fib;
- u32 dst_address, dst_address_length, adj_index, old_adj_index;
- uword * hash, is_del;
-
- /* 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);
- else
- adj_index = a->adj_index;
-
- dst_address = a->dst_address.data_u32;
- dst_address_length = a->dst_address_length;
-
- fib = pool_elt_at_index(lgm->src_fibs, a->table_index_or_table_id);
-
- 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;
+ u8 *rw = 0;
+ lisp_gpe_header_t * lisp0;
+ int len;
- if (is_del)
+ if (ip_addr_version(&t->src) == IP4)
{
- 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;
- }
- else
- ip4_sd_fib_set_adj_index (lgm, fib, a->flags, dst_address,
- dst_address_length, adj_index);
-
- old_adj_index = fib->old_hash_values[0];
-
- 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_sd_get_src_route (lisp_gpe_main_t * lgm, u32 src_fib_index,
- ip4_address_t * src, u32 address_length)
-{
- ip4_fib_t * fib = pool_elt_at_index (lgm->src_fibs, src_fib_index);
- uword * hash, * p;
-
- hash = fib->adj_index_by_dst_address[address_length];
- p = hash_get (hash, src->as_u32);
- return (void *) p;
-}
-
-typedef CLIB_PACKED (struct {
- ip4_address_t address;
- u32 address_length : 6;
- u32 index : 26;
-}) ip4_route_t;
-
-static void
-ip4_sd_fib_clear_src_fib (lisp_gpe_main_t * lgm, ip4_fib_t * fib)
-{
- ip4_route_t * routes = 0, * r;
- u32 i;
-
- vec_reset_length (routes);
-
- for (i = 0; i < ARRAY_LEN (fib->adj_index_by_dst_address); i++) {
- uword * hash = fib->adj_index_by_dst_address[i];
- hash_pair_t * p;
- ip4_route_t x;
-
- x.address_length = i;
+ ip4_header_t * ip0;
+ ip4_udp_lisp_gpe_header_t * h0;
+ len = sizeof(*h0);
- hash_foreach_pair (p, hash,
- ({
- x.address.data_u32 = p->key;
- vec_add1 (routes, x);
- }));
- }
+ vec_validate_aligned(rw, len - 1, CLIB_CACHE_LINE_BYTES);
- vec_foreach (r, routes) {
- ip4_add_del_route_args_t a;
+ h0 = (ip4_udp_lisp_gpe_header_t *) rw;
- memset (&a, 0, sizeof (a));
- a.flags = IP4_ROUTE_FLAG_FIB_INDEX | IP4_ROUTE_FLAG_DEL;
- a.table_index_or_table_id = fib - lgm->src_fibs;
- a.dst_address = r->address;
- a.dst_address_length = r->address_length;
- a.adj_index = ~0;
+ /* 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;
- ip4_sd_fib_add_del_src_route (lgm, &a);
- }
-}
+ /* we fix up the ip4 header length and checksum after-the-fact */
+ ip_address_copy_addr(&ip0->src_address, &t->src);
+ ip_address_copy_addr(&ip0->dst_address, &t->dst);
+ ip0->checksum = ip4_header_checksum (ip0);
-int
-ip4_sd_fib_add_del_route (lisp_gpe_main_t * lgm, ip_prefix_t * dst_prefix,
- ip_prefix_t * src_prefix, u32 table_id,
- ip_adjacency_t * add_adj, u8 is_add)
-{
- uword * p;
- ip4_add_del_route_args_t a;
- ip_adjacency_t * dst_adjp, dst_adj;
- ip4_address_t dst = ip_prefix_v4(dst_prefix), src;
- u32 dst_address_length = ip_prefix_len(dst_prefix), src_address_length = 0;
- ip4_fib_t * src_fib;
+ /* 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);
- if (src_prefix)
- {
- src = ip_prefix_v4(src_prefix);
- src_address_length = ip_prefix_len(src_prefix);
+ /* LISP-gpe header */
+ lisp0 = &h0->lisp;
}
else
- memset(&src, 0, sizeof(src));
-
- /* lookup dst adj */
- p = ip4_get_route (lgm->im4, table_id, 0, dst.as_u8, dst_address_length);
-
- if (is_add)
{
- /* insert dst prefix to ip4 fib, if it's not in yet */
- if (p == 0)
- {
- /* dst adj should point to lisp gpe lookup */
- dst_adj = add_adj[0];
- dst_adj.lookup_next_index = lgm->ip4_lookup_next_lgpe_ip4_lookup;
-
- memset(&a, 0, sizeof(a));
- a.flags = IP4_ROUTE_FLAG_TABLE_ID;
- a.table_index_or_table_id = table_id; /* vrf */
- a.adj_index = ~0;
- a.dst_address_length = dst_address_length;
- a.dst_address = dst;
- a.flags |= IP4_ROUTE_FLAG_ADD;
- a.add_adj = &dst_adj;
- a.n_add_adj = 1;
-
- ip4_add_del_route (lgm->im4, &a);
-
- /* lookup dst adj to obtain the adj index */
- p = ip4_get_route (lgm->im4, table_id, 0, dst.as_u8,
- dst_address_length);
- if (p == 0)
- {
- clib_warning("Failed to insert dst route for eid %U!",
- format_ip4_address_and_length, dst.as_u8,
- dst_address_length);
- return -1;
- }
-
- /* allocate and init src ip4 fib */
- pool_get(lgm->src_fibs, src_fib);
- ip4_mtrie_init (&src_fib->mtrie);
-
- /* reuse rewrite header to store pointer to src fib */
- dst_adjp = ip_get_adjacency (lgm->lookup_main, p[0]);
- dst_adjp->rewrite_header.sw_if_index = src_fib - lgm->src_fibs;
- }
- }
- else
- {
- if (p == 0)
- {
- clib_warning("Trying to delete inexistent dst route for %U. Aborting",
- format_ip4_address_and_length, dst.as_u8,
- dst_address_length);
- return -1;
- }
- }
+ ip6_header_t * ip0;
+ ip6_udp_lisp_gpe_header_t * h0;
+ len = sizeof(*h0);
- dst_adjp = ip_get_adjacency (lgm->lookup_main, p[0]);
-
- /* add/del src prefix to src fib */
- memset(&a, 0, sizeof(a));
- a.flags = IP4_ROUTE_FLAG_TABLE_ID;
- a.table_index_or_table_id = dst_adjp->rewrite_header.sw_if_index;
- a.adj_index = ~0;
- a.flags |= is_add ? IP4_ROUTE_FLAG_ADD : IP4_ROUTE_FLAG_DEL;
- a.add_adj = add_adj;
- a.n_add_adj = 1;
- /* if src prefix is null, add 0/0 */
- a.dst_address_length = src_address_length;
- a.dst_address = src;
- ip4_sd_fib_add_del_src_route (lgm, &a);
-
- /* if a delete, check if there are elements left in the src fib */
- if (!is_add)
- {
- src_fib = pool_elt_at_index(lgm->src_fibs,
- dst_adjp->rewrite_header.sw_if_index);
- if (!src_fib)
- return 0;
+ vec_validate_aligned(rw, len - 1, CLIB_CACHE_LINE_BYTES);
- /* if there's nothing left, clear src fib .. */
- if (ARRAY_LEN(src_fib->adj_index_by_dst_address) == 0)
- {
- ip4_sd_fib_clear_src_fib (lgm, src_fib);
- pool_put(lgm->src_fibs, src_fib);
- }
+ h0 = (ip6_udp_lisp_gpe_header_t *) rw;
- /* .. and remove dst route */
- memset(&a, 0, sizeof(a));
- a.flags = IP4_ROUTE_FLAG_TABLE_ID;
- a.table_index_or_table_id = table_id; /* vrf */
- a.adj_index = ~0;
- a.dst_address_length = dst_address_length;
- a.dst_address = dst;
- a.flags |= IP4_ROUTE_FLAG_DEL;
+ /* Fixed portion of the (outer) ip6 header */
+ ip0 = &h0->ip6;
+ ip0->ip_version_traffic_class_and_flow_label =
+ clib_host_to_net_u32 (0x6 << 28);
+ ip0->hop_limit = 254;
+ ip0->protocol = IP_PROTOCOL_UDP;
- ip4_add_del_route (lgm->im4, &a);
- }
+ /* we fix up the ip6 header length after-the-fact */
+ ip_address_copy_addr(&ip0->src_address, &t->src);
+ ip_address_copy_addr(&ip0->dst_address, &t->dst);
- return 0;
-}
+ /* 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);
-static void *
-ip4_sd_fib_get_route (lisp_gpe_main_t * lgm, ip_prefix_t * dst_prefix,
- ip_prefix_t * src_prefix, u32 table_id)
-{
- uword * p;
- ip4_address_t dst = ip_prefix_v4(dst_prefix), src;
- u32 dst_address_length = ip_prefix_len(dst_prefix), src_address_length = 0;
- ip_adjacency_t * dst_adj;
-
- if (src_prefix)
- {
- src = ip_prefix_v4(src_prefix);
- src_address_length = ip_prefix_len(src_prefix);
+ /* LISP-gpe header */
+ lisp0 = &h0->lisp;
}
- else
- memset(&src, 0, sizeof(src));
-
- /* lookup dst adj */
- p = ip4_get_route (lgm->im4, table_id, 0, dst.as_u8, dst_address_length);
- if (p == 0)
- return p;
-
- dst_adj = ip_get_adjacency (lgm->lookup_main, p[0]);
- return ip4_sd_get_src_route (lgm, dst_adj->rewrite_header.sw_if_index, &src,
- src_address_length);
-}
-
-typedef enum
-{
- LGPE_IP4_LOOKUP_NEXT_DROP,
- LGPE_IP4_LOOKUP_NEXT_LISP_CP_LOOKUP,
- LGPE_IP4_LOOKUP_N_NEXT,
-} lgpe_ip4_lookup_next_t;
-
-always_inline void
-ip4_src_fib_lookup_one (lisp_gpe_main_t * lgm, u32 src_fib_index0,
- ip4_address_t * addr0, u32 * src_adj_index0)
-{
- ip4_fib_mtrie_leaf_t leaf0, leaf1;
- ip4_fib_mtrie_t * mtrie0;
-
- mtrie0 = &vec_elt_at_index(lgm->src_fibs, src_fib_index0)->mtrie;
-
- leaf0 = leaf1 = IP4_FIB_MTRIE_LEAF_ROOT;
- leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, addr0, 0);
- leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, addr0, 1);
- leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, addr0, 2);
- leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, addr0, 3);
-
- /* Handle default route. */
- leaf0 = (leaf0 == IP4_FIB_MTRIE_LEAF_EMPTY ? mtrie0->default_leaf : leaf0);
- src_adj_index0[0] = ip4_fib_mtrie_leaf_get_adj_index (leaf0);
-}
-
-always_inline void
-ip4_src_fib_lookup_two (lisp_gpe_main_t * lgm, u32 src_fib_index0,
- u32 src_fib_index1, ip4_address_t * addr0,
- ip4_address_t * addr1, u32 * src_adj_index0,
- u32 * src_adj_index1)
-{
- ip4_fib_mtrie_leaf_t leaf0, leaf1;
- ip4_fib_mtrie_t * mtrie0, * mtrie1;
-
- mtrie0 = &vec_elt_at_index(lgm->src_fibs, src_fib_index0)->mtrie;
- mtrie1 = &vec_elt_at_index(lgm->src_fibs, src_fib_index1)->mtrie;
-
- leaf0 = leaf1 = IP4_FIB_MTRIE_LEAF_ROOT;
-
- leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, addr0, 0);
- leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, addr1, 0);
-
- leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, addr0, 1);
- leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, addr1, 1);
-
- leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, addr0, 2);
- leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, addr1, 2);
-
- leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, addr0, 3);
- leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, addr1, 3);
-
- /* 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);
- src_adj_index0[0] = ip4_fib_mtrie_leaf_get_adj_index (leaf0);
- src_adj_index1[0] = ip4_fib_mtrie_leaf_get_adj_index (leaf1);
-}
-
-always_inline uword
-lgpe_ip4_lookup (vlib_main_t * vm, vlib_node_runtime_t * node,
- vlib_frame_t * from_frame)
-{
- u32 n_left_from, next_index, * from, * to_next;
- lisp_gpe_main_t * lgm = &lisp_gpe_main;
-
- from = vlib_frame_vector_args (from_frame);
- n_left_from = from_frame->n_vectors;
-
- next_index = node->cached_next_index;
-
- while (n_left_from > 0)
- {
- u32 n_left_to_next;
-
- vlib_get_next_frame(vm, node, next_index, to_next, n_left_to_next);
-
- while (n_left_from >= 4 && n_left_to_next >= 2)
- {
- u32 bi0, bi1;
- vlib_buffer_t * b0, * b1;
- ip4_header_t * ip0, * ip1;
- u32 dst_adj_index0, src_adj_index0, src_fib_index0, dst_adj_index1,
- src_adj_index1, src_fib_index1;
- ip_adjacency_t * dst_adj0, * src_adj0, * dst_adj1, * src_adj1;
- u32 next0, next1;
-
- next0 = next1 = LGPE_IP4_LOOKUP_NEXT_LISP_CP_LOOKUP;
-
- /* Prefetch next iteration. */
- {
- vlib_buffer_t * p2, * p3;
-
- p2 = vlib_get_buffer (vm, from[2]);
- p3 = vlib_get_buffer (vm, from[3]);
-
- vlib_prefetch_buffer_header (p2, LOAD);
- vlib_prefetch_buffer_header (p3, LOAD);
-
- CLIB_PREFETCH (p2->data, 2*CLIB_CACHE_LINE_BYTES, LOAD);
- CLIB_PREFETCH (p3->data, 2*CLIB_CACHE_LINE_BYTES, LOAD);
- }
-
- bi0 = from[0];
- bi1 = from[1];
- to_next[0] = bi0;
- to_next[1] = bi1;
- from += 2;
- to_next += 2;
- n_left_to_next -= 2;
- n_left_from -= 2;
-
- b0 = vlib_get_buffer (vm, bi0);
- b1 = vlib_get_buffer (vm, bi1);
-
- ip0 = vlib_buffer_get_current (b0);
- ip1 = vlib_buffer_get_current (b1);
-
- /* dst lookup was done by ip4 lookup */
- dst_adj_index0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
- dst_adj_index1 = vnet_buffer(b1)->ip.adj_index[VLIB_TX];
-
- dst_adj0 = ip_get_adjacency (lgm->lookup_main, dst_adj_index0);
- dst_adj1 = ip_get_adjacency (lgm->lookup_main, dst_adj_index1);
-
- src_fib_index0 = dst_adj0->rewrite_header.sw_if_index;
- src_fib_index1 = dst_adj1->rewrite_header.sw_if_index;
-
- /* if default route not hit in ip4 lookup */
- if (PREDICT_TRUE(src_fib_index0 != (u32) ~0
- && src_fib_index1 != (u32) ~0))
- {
- ip4_src_fib_lookup_two (lgm, src_fib_index0, src_fib_index1,
- &ip0->src_address, &ip1->src_address,
- &src_adj_index0, &src_adj_index1);
-
- vnet_buffer(b0)->ip.adj_index[VLIB_TX] = src_adj_index0;
- vnet_buffer(b1)->ip.adj_index[VLIB_TX] = src_adj_index1;
-
- src_adj0 = ip_get_adjacency (lgm->lookup_main, src_adj_index0);
- src_adj1 = ip_get_adjacency (lgm->lookup_main, src_adj_index1);
-
- next0 = src_adj0->lookup_next_index;
- next1 = src_adj1->lookup_next_index;
-
- /* prepare buffer for lisp-gpe output node */
- vnet_buffer (b0)->sw_if_index[VLIB_TX] =
- src_adj0->rewrite_header.sw_if_index;
- vnet_buffer (b1)->sw_if_index[VLIB_TX] =
- src_adj1->rewrite_header.sw_if_index;
- }
- else
- {
- if (src_fib_index0 != (u32) ~0)
- {
- ip4_src_fib_lookup_one (lgm, src_fib_index0,
- &ip0->src_address, &src_adj_index0);
- vnet_buffer(b0)->ip.adj_index[VLIB_TX] = src_adj_index0;
- src_adj0 = ip_get_adjacency (lgm->lookup_main,
- src_adj_index0);
- next0 = src_adj0->lookup_next_index;
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = src_adj_index0;
- }
- if (src_fib_index1 != (u32) ~0)
- {
- ip4_src_fib_lookup_one (lgm, src_fib_index1,
- &ip1->src_address, &src_adj_index1);
- vnet_buffer(b1)->ip.adj_index[VLIB_TX] = src_adj_index1;
- src_adj1 = ip_get_adjacency (lgm->lookup_main,
- src_adj_index1);
- next1 = src_adj1->lookup_next_index;
- vnet_buffer (b1)->sw_if_index[VLIB_TX] = src_adj_index1;
- }
- }
-
- vlib_validate_buffer_enqueue_x2(vm, node, next_index, to_next,
- n_left_to_next, bi0, bi1, next0,
- next1);
- }
-
- while (n_left_from > 0 && n_left_to_next > 0)
- {
- vlib_buffer_t * b0;
- ip4_header_t * ip0;
- u32 bi0, dst_adj_index0, src_adj_index0, src_fib_index0;
- u32 next0 = LGPE_IP4_LOOKUP_NEXT_LISP_CP_LOOKUP;
- ip_adjacency_t * dst_adj0, * src_adj0;
-
- bi0 = from[0];
- to_next[0] = bi0;
- from += 1;
- to_next += 1;
- n_left_from -= 1;
- n_left_to_next -= 1;
-
- b0 = vlib_get_buffer (vm, bi0);
- ip0 = vlib_buffer_get_current (b0);
-
- /* dst lookup was done by ip4 lookup */
- dst_adj_index0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
- dst_adj0 = ip_get_adjacency (lgm->lookup_main, dst_adj_index0);
- src_fib_index0 = dst_adj0->rewrite_header.sw_if_index;
-
- /* default route hit in ip4 lookup, send to lisp control plane */
- if (src_fib_index0 == (u32) ~0)
- goto done;
-
- /* src lookup we do here */
- ip4_src_fib_lookup_one (lgm, src_fib_index0, &ip0->src_address,
- &src_adj_index0);
- vnet_buffer(b0)->ip.adj_index[VLIB_TX] = src_adj_index0;
- src_adj0 = ip_get_adjacency (lgm->lookup_main, src_adj_index0);
- next0 = src_adj0->lookup_next_index;
-
- /* prepare packet for lisp-gpe output node */
- vnet_buffer (b0)->sw_if_index[VLIB_TX] =
- src_adj0->rewrite_header.sw_if_index;
- done:
- vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next,
- n_left_to_next, bi0, next0);
- }
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
- }
- return from_frame->n_vectors;
-}
-
-
-VLIB_REGISTER_NODE (lgpe_ip4_lookup_node) = {
- .function = lgpe_ip4_lookup,
- .name = "lgpe-ip4-lookup",
- .vector_size = sizeof (u32),
-
- .type = VLIB_NODE_TYPE_INTERNAL,
-
- .n_next_nodes = LGPE_IP4_LOOKUP_N_NEXT,
- .next_nodes = {
- [LGPE_IP4_LOOKUP_NEXT_DROP] = "error-drop",
- [LGPE_IP4_LOOKUP_NEXT_LISP_CP_LOOKUP] = "lisp-cp-lookup",
- },
-};
-
-static int
-lisp_gpe_rewrite (lisp_gpe_tunnel_t * t)
-{
- 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;
return 0;
}
-/* TODO remove */
-int
-vnet_lisp_gpe_add_del_tunnel (vnet_lisp_gpe_add_del_tunnel_args_t *a,
- u32 * sw_if_indexp)
-{
- clib_warning ("UNSUPPORTED! Use vnet_lisp_gpe_add_del_fwd_entry");
- return 0;
-}
-
#define foreach_copy_field \
_(encap_fib_index) \
_(decap_fib_index) \
_(decap_next_index) \
-_(flags) \
-_(next_protocol) \
-_(ver_res) \
-_(res) \
_(vni)
static u32
-add_del_tunnel (vnet_lisp_gpe_add_del_fwd_entry_args_t *a, u32 * tun_index_res)
+add_del_ip_tunnel (vnet_lisp_gpe_add_del_fwd_entry_args_t *a,
+ u32 * tun_index_res)
{
lisp_gpe_main_t * lgm = &lisp_gpe_main;
lisp_gpe_tunnel_t *t = 0;
int rv;
lisp_gpe_tunnel_key_t key;
+ /* prepare tunnel key */
memset(&key, 0, sizeof(key));
- gid_address_copy(&key.eid, &a->deid);
- key.dst_loc = ip_addr_v4(&a->dlocator).as_u32;
+ ip_prefix_copy(&key.eid, &gid_address_ippref(&a->deid));
+ ip_address_copy(&key.dst_loc, &a->dlocator);
key.iid = clib_host_to_net_u32 (a->vni);
p = mhash_get (&lgm->lisp_gpe_tunnel_by_key, &key);
foreach_copy_field;
#undef _
- t->src = ip_addr_v4(&a->slocator);
- t->dst = ip_addr_v4(&a->dlocator);
+ ip_address_copy(&t->src, &a->slocator);
+ ip_address_copy(&t->dst, &a->dlocator);
+
+ /* if vni is non-default */
+ if (a->vni)
+ {
+ t->flags = LISP_GPE_FLAGS_I;
+ t->vni = a->vni;
+ }
+
+ t->flags |= LISP_GPE_FLAGS_P;
+ t->next_protocol = ip_prefix_version(&key.eid) == IP4 ?
+ LISP_GPE_NEXT_PROTO_IP4 : LISP_GPE_NEXT_PROTO_IP6;
rv = lisp_gpe_rewrite (t);
vnet_lisp_gpe_add_del_fwd_entry_args_t * a)
{
ip_adjacency_t adj;
+ ip_prefix_t * dpref = &gid_address_ippref(&a->deid);
+ ip_prefix_t * spref = &gid_address_ippref(&a->seid);
+
/* setup adjacency for eid */
memset (&adj, 0, sizeof(adj));
adj.n_adj = 1;
- adj.explicit_fib_index = ~0;
- ip_prefix_t * dpref = &gid_address_ippref(&a->deid);
- ip_prefix_t * spref = &gid_address_ippref(&a->seid);
+ /* fill in 'legal' data to avoid issues */
+ adj.lookup_next_index = (ip_prefix_version(dpref) == IP4) ?
+ lgm->ip4_lookup_next_lgpe_ip4_lookup :
+ lgm->ip6_lookup_next_lgpe_ip6_lookup;
+
+ adj.rewrite_header.sw_if_index = ~0;
+ adj.rewrite_header.next_index = ~0;
switch (a->action)
{
/* TODO check if route/next-hop for eid exists in fib and add
* more specific for the eid with the next-hop found */
case SEND_MAP_REQUEST:
- /* TODO insert tunnel that always sends map-request */
+ /* insert tunnel that always sends map-request */
+ adj.explicit_fib_index = (ip_prefix_version(dpref) == IP4) ?
+ LGPE_IP4_LOOKUP_NEXT_LISP_CP_LOOKUP:
+ LGPE_IP6_LOOKUP_NEXT_LISP_CP_LOOKUP;
+ /* add/delete route for prefix */
+ return ip_sd_fib_add_del_route (lgm, dpref, spref, a->table_id, &adj,
+ a->is_add);
case DROP:
/* for drop fwd entries, just add route, no need to add encap tunnel */
- adj.lookup_next_index = (u16) LGPE_IP4_LOOKUP_NEXT_DROP;
+ adj.explicit_fib_index = (ip_prefix_version(dpref) == IP4 ?
+ LGPE_IP4_LOOKUP_NEXT_DROP : LGPE_IP6_LOOKUP_NEXT_DROP);
/* add/delete route for prefix */
- return ip4_sd_fib_add_del_route (lgm, dpref, spref, a->table_id, &adj,
- a->is_add);
- break;
+ return ip_sd_fib_add_del_route (lgm, dpref, spref, a->table_id, &adj,
+ a->is_add);
default:
return -1;
}
{
lisp_gpe_main_t * lgm = &lisp_gpe_main;
ip_adjacency_t adj, * adjp;
- u32 * adj_index, rv, tun_index = ~0;
+ u32 adj_index, rv, tun_index = ~0;
ip_prefix_t * dpref, * spref;
- uword * lookup_next_index, * lgpe_sw_if_index;
+ uword * lookup_next_index, * lgpe_sw_if_index, * lnip;
+ u8 ip_ver;
+
+ if (vnet_lisp_gpe_enable_disable_status() == 0)
+ {
+ clib_warning ("LISP is disabled!");
+ return VNET_API_ERROR_LISP_DISABLED;
+ }
/* treat negative fwd entries separately */
if (a->is_negative)
return add_del_negative_fwd_entry (lgm, a);
+ dpref = &gid_address_ippref(&a->deid);
+ spref = &gid_address_ippref(&a->seid);
+ ip_ver = ip_prefix_version(dpref);
+
/* add/del tunnel to tunnels pool and prepares rewrite */
- rv = add_del_tunnel (a, &tun_index);
+ rv = add_del_ip_tunnel (a, &tun_index);
if (rv)
return rv;
- dpref = &gid_address_ippref(&a->deid);
- spref = &gid_address_ippref(&a->seid);
-
/* setup adjacency for eid */
memset (&adj, 0, sizeof(adj));
adj.n_adj = 1;
- adj.explicit_fib_index = ~0;
+
+ /* fill in lookup_next_index with a 'legal' value to avoid problems */
+ adj.lookup_next_index = (ip_ver == IP4) ?
+ lgm->ip4_lookup_next_lgpe_ip4_lookup :
+ lgm->ip6_lookup_next_lgpe_ip6_lookup;
if (a->is_add)
{
/* send packets that hit this adj to lisp-gpe interface output node in
* requested vrf. */
- lookup_next_index = hash_get(lgm->lgpe_ip4_lookup_next_index_by_table_id,
- a->table_id);
+ lnip = (ip_ver == IP4) ?
+ lgm->lgpe_ip4_lookup_next_index_by_table_id :
+ lgm->lgpe_ip6_lookup_next_index_by_table_id;
+ lookup_next_index = hash_get(lnip, a->table_id);
lgpe_sw_if_index = hash_get(lgm->lisp_gpe_hw_if_index_by_table_id,
a->table_id);
ASSERT(lookup_next_index != 0);
ASSERT(lgpe_sw_if_index != 0);
- adj.lookup_next_index = lookup_next_index[0];
- adj.rewrite_header.node_index = tun_index;
+ /* hijack explicit fib index to store lisp interface node index and
+ * if_address_index for the tunnel index */
+ adj.explicit_fib_index = lookup_next_index[0];
+ adj.if_address_index = tun_index;
adj.rewrite_header.sw_if_index = lgpe_sw_if_index[0];
}
/* add/delete route for prefix */
- rv = ip4_sd_fib_add_del_route (lgm, dpref, spref, a->table_id, &adj,
- a->is_add);
+ rv = ip_sd_fib_add_del_route (lgm, dpref, spref, a->table_id, &adj,
+ a->is_add);
/* check that everything worked */
if (CLIB_DEBUG && a->is_add)
{
- adj_index = ip4_sd_fib_get_route (lgm, dpref, spref, a->table_id);
+ adj_index = ip_sd_fib_get_route (lgm, dpref, spref, a->table_id);
ASSERT(adj_index != 0);
- adjp = ip_get_adjacency (lgm->lookup_main, adj_index[0]);
+ adjp = ip_get_adjacency ((ip_ver == IP4) ? lgm->lm4 : lgm->lm6,
+ adj_index);
ASSERT(adjp != 0);
- ASSERT(adjp->rewrite_header.node_index == tun_index);
+ ASSERT(adjp->if_address_index == tun_index);
}
return rv;
gid_address_t * eids = 0, eid;
clib_error_t * error = 0;
u32 i;
+ int rv;
prefp = &gid_address_ippref(&eid);
a.deid = eids[i];
a.slocator = slocators[i];
a.dlocator = dlocators[i];
- prefp = &gid_address_ippref(&a.deid);
- a.decap_next_index = (ip_prefix_version(prefp) == IP4) ?
- LISP_GPE_INPUT_NEXT_IP4_INPUT : LISP_GPE_INPUT_NEXT_IP6_INPUT;
- vnet_lisp_gpe_add_del_fwd_entry (&a, 0);
+ rv = vnet_lisp_gpe_add_del_fwd_entry (&a, 0);
+ if (0 != rv)
+ {
+ error = clib_error_return(0, "failed to %s gpe maptunnel!",
+ is_add ? "add" : "delete");
+ break;
+ }
}
done:
vec_free(eids);
vec_free(slocators);
+ vec_free(dlocators);
return error;
}
-VLIB_CLI_COMMAND (add_del_lisp_gpe_mapping_tunnel_command, static) = {
+VLIB_CLI_COMMAND (lisp_gpe_add_del_fwd_entry_command, static) = {
.path = "lisp gpe maptunnel",
.short_help = "lisp gpe maptunnel eid <eid> sloc <src-locator> "
"dloc <dst-locator> [del]",
s = format (s,
"[%d] %U (src) %U (dst) fibs: encap %d, decap %d",
t - lgm->tunnels,
- format_ip4_address, &t->src,
- format_ip4_address, &t->dst,
+ format_ip_address, &t->src,
+ format_ip_address, &t->dst,
t->encap_fib_index,
t->decap_fib_index);
.function = show_lisp_gpe_tunnel_command_fn,
};
+u8
+vnet_lisp_gpe_enable_disable_status(void)
+{
+ lisp_gpe_main_t * lgm = &lisp_gpe_main;
+
+ return lgm->is_en;
+}
+
clib_error_t *
vnet_lisp_gpe_enable_disable (vnet_lisp_gpe_enable_disable_args_t * a)
{
vnm->vlib_main, ip4_lookup_node.index,
lgpe_ip4_lookup_node.index);
}
+ /* add lgpe_ip6_lookup as possible next_node for ip6 lookup */
+ if (lgm->ip6_lookup_next_lgpe_ip6_lookup == ~0)
+ {
+ lgm->ip6_lookup_next_lgpe_ip6_lookup = vlib_node_add_next (
+ vnm->vlib_main, ip6_lookup_node.index,
+ lgpe_ip6_lookup_node.index);
+ }
else
{
/* ask cp to re-add ifaces and defaults */
}
+
+ lgm->is_en = 1;
}
else
{
vec_foreach(tunnel, tunnels) {
memset(at, 0, sizeof(at[0]));
at->is_add = 0;
- gid_address_copy(&at->deid, &tunnel->eid);
- ip_addr_v4(&at->dlocator).as_u32= tunnel->dst_loc;
+ gid_address_type(&at->deid) = GID_ADDR_IP_PREFIX;
+ ip_prefix_copy(&gid_address_ippref(&at->deid), &tunnel->eid);
+ ip_address_copy(&at->dlocator, &tunnel->dst_loc);
vnet_lisp_gpe_add_del_fwd_entry (at, 0);
}
vec_free(tunnels);
vnet_lisp_gpe_add_del_iface(ai, 0);
}
vec_free(table_ids);
+ lgm->is_en = 0;
}
return 0;
.function = lisp_gpe_enable_disable_command_fn,
};
+static clib_error_t *
+lisp_show_iface_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ lisp_gpe_main_t * lgm = &lisp_gpe_main;
+ hash_pair_t * p;
+
+ vlib_cli_output (vm, "%=10s%=12s", "vrf", "hw_if_index");
+ hash_foreach_pair (p, lgm->lisp_gpe_hw_if_index_by_table_id, ({
+ vlib_cli_output (vm, "%=10d%=10d", p->key, p->value[0]);
+ }));
+ return 0;
+}
+
+VLIB_CLI_COMMAND (lisp_show_iface_command) = {
+ .path = "show lisp gpe interface",
+ .short_help = "show lisp gpe interface",
+ .function = lisp_show_iface_command_fn,
+};
+
clib_error_t *
lisp_gpe_init (vlib_main_t *vm)
{
lgm->vnet_main = vnet_get_main();
lgm->vlib_main = vm;
lgm->im4 = &ip4_main;
- lgm->lookup_main = &ip4_main.lookup_main;
+ lgm->im6 = &ip6_main;
+ lgm->lm4 = &ip4_main.lookup_main;
+ lgm->lm6 = &ip6_main.lookup_main;
lgm->ip4_lookup_next_lgpe_ip4_lookup = ~0;
+ lgm->ip6_lookup_next_lgpe_ip6_lookup = ~0;
mhash_init (&lgm->lisp_gpe_tunnel_by_key, sizeof(uword),
sizeof(lisp_gpe_tunnel_key_t));
udp_register_dst_port (vm, UDP_DST_PORT_lisp_gpe,
- lisp_gpe_input_node.index, 1 /* is_ip4 */);
+ 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;
}
+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");
+}
+
VLIB_INIT_FUNCTION(lisp_gpe_init);
Code Review / vpp.git / blobdiff