* See the License for the specific language governing permissions and
* limitations under the License.
*/
+/**
+ * @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_fwd_entry.h>
+#include <vnet/lisp-gpe/lisp_gpe_adjacency.h>
+#include <vnet/lisp-gpe/lisp_gpe_tenant.h>
+/** LISP-GPE global state */
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)
-{
- 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;
-
- 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;
- }
- 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;
-
- hash_foreach_pair (p, hash,
- ({
- x.address.data_u32 = p->key;
- vec_add1 (routes, x);
- }));
- }
-
- vec_foreach (r, routes) {
- ip4_add_del_route_args_t a;
-
- 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;
-
- ip4_sd_fib_add_del_src_route (lgm, &a);
- }
-}
-
-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;
-
- if (src_prefix)
- {
- src = ip_prefix_v4(src_prefix);
- src_address_length = ip_prefix_len(src_prefix);
- }
- 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;
- }
- }
-
- 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;
-
- /* 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);
- }
-
- /* .. 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;
-
- ip4_add_del_route (lgm->im4, &a);
- }
-
- return 0;
-}
-
-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);
- }
- 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;
- lisp0->res = t->res;
- lisp0->next_protocol = t->next_protocol;
- lisp0->iid = clib_host_to_net_u32 (t->vni);
-
- t->rewrite = rw;
- 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)
-{
- lisp_gpe_main_t * lgm = &lisp_gpe_main;
- lisp_gpe_tunnel_t *t = 0;
- uword * p;
- int rv;
- lisp_gpe_tunnel_key_t key;
-
- memset(&key, 0, sizeof(key));
- gid_address_copy(&key.eid, &a->deid);
- key.dst_loc = ip_addr_v4(&a->dlocator).as_u32;
- key.iid = clib_host_to_net_u32 (a->vni);
-
- p = mhash_get (&lgm->lisp_gpe_tunnel_by_key, &key);
-
- if (a->is_add)
- {
- /* 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 (lgm->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 _
-
- t->src = ip_addr_v4(&a->slocator);
- t->dst = ip_addr_v4(&a->dlocator);
-
- rv = lisp_gpe_rewrite (t);
-
- if (rv)
- {
- pool_put(lgm->tunnels, t);
- return rv;
- }
-
- mhash_set(&lgm->lisp_gpe_tunnel_by_key, &key, t - lgm->tunnels, 0);
-
- /* return tunnel index */
- if (tun_index_res)
- tun_index_res[0] = t - lgm->tunnels;
- }
- else
- {
- /* deleting a tunnel: tunnel must exist */
- if (!p)
- {
- clib_warning("Tunnel for eid %U doesn't exist!", format_gid_address,
- &a->deid);
- return VNET_API_ERROR_NO_SUCH_ENTRY;
- }
-
- t = pool_elt_at_index(lgm->tunnels, p[0]);
-
- mhash_unset(&lgm->lisp_gpe_tunnel_by_key, &key, 0);
-
- vec_free(t->rewrite);
- pool_put(lgm->tunnels, t);
- }
-
- return 0;
-}
-
-static int
-add_del_negative_fwd_entry (lisp_gpe_main_t * lgm,
- vnet_lisp_gpe_add_del_fwd_entry_args_t * a)
-{
- ip_adjacency_t adj;
- /* 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);
-
- switch (a->action)
- {
- case NO_ACTION:
- /* TODO update timers? */
- case 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 SEND_MAP_REQUEST:
- /* TODO insert tunnel that always sends map-request */
- case DROP:
- /* for drop fwd entries, just add route, no need to add encap tunnel */
- adj.lookup_next_index = LGPE_IP4_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;
- default:
- return -1;
- }
-}
-
-int
-vnet_lisp_gpe_add_del_fwd_entry (vnet_lisp_gpe_add_del_fwd_entry_args_t * a,
- u32 * hw_if_indexp)
-{
- lisp_gpe_main_t * lgm = &lisp_gpe_main;
- ip_adjacency_t adj, * adjp;
- u32 * adj_index, rv, tun_index = ~0;
- ip_prefix_t * dpref, * spref;
- uword * lookup_next_index, * lgpe_sw_if_index;
-
- /* treat negative fwd entries separately */
- if (a->is_negative)
- return add_del_negative_fwd_entry (lgm, a);
-
- /* add/del tunnel to tunnels pool and prepares rewrite */
- rv = add_del_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;
-
- 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);
- lgpe_sw_if_index = hash_get(lgm->lisp_gpe_hw_if_index_by_table_id,
- a->table_id);
-
- /* the assumption is that the interface must've been created before
- * programming the dp */
- 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;
- 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);
-
- /* check that everything worked */
- if (CLIB_DEBUG && a->is_add)
- {
- adj_index = ip4_sd_fib_get_route (lgm, dpref, spref, a->table_id);
- ASSERT(adj_index != 0);
-
- adjp = ip_get_adjacency (lgm->lookup_main, adj_index[0]);
-
- ASSERT(adjp != 0);
- ASSERT(adjp->rewrite_header.node_index == tun_index);
- }
-
- return rv;
-}
+/** CLI command to add/del forwarding entry. */
static clib_error_t *
lisp_gpe_add_del_fwd_entry_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
{
- unformat_input_t _line_input, * line_input = &_line_input;
+ unformat_input_t _line_input, *line_input = &_line_input;
u8 is_add = 1;
- ip_address_t slocator, dlocator, *slocators = 0, *dlocators = 0;
- ip_prefix_t * prefp;
- gid_address_t * eids = 0, eid;
- clib_error_t * error = 0;
- u32 i;
-
- prefp = &gid_address_ippref(&eid);
+ 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;
/* 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;
+ is_add = 0;
else if (unformat (line_input, "add"))
- is_add = 1;
- else if (unformat (line_input, "eid %U slocator %U dlocator %U",
- unformat_ip_prefix, prefp,
- unformat_ip_address, &slocator,
- unformat_ip_address, &dlocator))
- {
- vec_add1 (eids, eid);
- vec_add1 (slocators, slocator);
- vec_add1 (dlocators, dlocator);
- }
+ 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, "bd %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;
- }
+ {
+ error = unformat_parse_error (line_input);
+ goto done;
+ }
}
unformat_free (line_input);
- if (vec_len (eids) + vec_len (slocators) == 0)
+ if (!vni_set || !vrf_set)
{
- error = clib_error_return (0, "expected ip4/ip6 eids/locators.");
+ error = clib_error_return (0, "vni and vrf must be set!");
goto done;
}
- if (vec_len (eids) != vec_len (slocators))
+ if (!reid_set)
{
- error = clib_error_return (0, "number of eids not equal to that of "
- "locators.");
+ error = clib_error_return (0, "remote eid must be set!");
goto done;
}
- for (i = 0; i < vec_len(eids); i++)
+ if (is_negative)
{
- vnet_lisp_gpe_add_del_fwd_entry_args_t a;
- memset (&a, 0, sizeof(a));
-
- a.is_add = is_add;
- 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);
+ if (~0 == action)
+ {
+ error = clib_error_return (0, "no action set for negative tunnel!");
+ goto done;
+ }
}
-
- done:
- vec_free(eids);
- vec_free(slocators);
- return error;
-}
-
-VLIB_CLI_COMMAND (add_del_lisp_gpe_mapping_tunnel_command, static) = {
- .path = "lisp gpe maptunnel",
- .short_help = "lisp gpe maptunnel eid <eid> sloc <src-locator> "
- "dloc <dst-locator> [del]",
- .function = lisp_gpe_add_del_fwd_entry_command_fn,
-};
-
-static u8 *
-format_decap_next (u8 * s, va_list * args)
-{
- u32 next_index = va_arg (*args, u32);
-
- switch (next_index)
+ else
{
- 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");
- default:
- return format (s, "unknown %d", next_index);
+ if (vec_len (pairs) == 0)
+ {
+ error = clib_error_return (0, "expected ip4/ip6 locators.");
+ goto done;
+ }
}
- return s;
-}
-
-u8 *
-format_lisp_gpe_tunnel (u8 * s, va_list * args)
-{
- lisp_gpe_tunnel_t * t = va_arg (*args, lisp_gpe_tunnel_t *);
- lisp_gpe_main_t * lgm = &lisp_gpe_main;
- 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,
- t->encap_fib_index,
- t->decap_fib_index);
+ 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);
+ }
- s = format (s, " decap next %U\n", format_decap_next, t->decap_next_index);
- s = format (s, "lisp ver %d ", (t->ver_res>>6));
+ /* add fwd entry */
+ vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
+ memset (a, 0, sizeof (a[0]));
-#define _(n,v) if (t->flags & v) s = format (s, "%s-bit ", #n);
- foreach_lisp_gpe_flag_bit;
-#undef _
+ 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;
- s = format (s, "next_protocol %d ver_res %x res %x\n",
- t->next_protocol, t->ver_res, t->res);
+ 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");
+ }
- s = format (s, "iid %d (0x%x)\n", t->vni, t->vni);
- return s;
+done:
+ vec_free (pairs);
+ return error;
}
-static clib_error_t *
-show_lisp_gpe_tunnel_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
+/* *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* */
+
+/** Check if LISP-GPE is enabled. */
+u8
+vnet_lisp_gpe_enable_disable_status (void)
{
- lisp_gpe_main_t * lgm = &lisp_gpe_main;
- lisp_gpe_tunnel_t * t;
-
- if (pool_elts (lgm->tunnels) == 0)
- vlib_cli_output (vm, "No lisp-gpe tunnels configured...");
+ lisp_gpe_main_t *lgm = &lisp_gpe_main;
- pool_foreach (t, lgm->tunnels,
- ({
- vlib_cli_output (vm, "%U", format_lisp_gpe_tunnel, t);
- }));
-
- return 0;
+ return lgm->is_en;
}
-VLIB_CLI_COMMAND (show_lisp_gpe_tunnel_command, static) = {
- .path = "show lisp gpe tunnel",
- .function = show_lisp_gpe_tunnel_command_fn,
-};
-
+/** 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;
- vnet_main_t * vnm = lgm->vnet_main;
+ lisp_gpe_main_t *lgm = &lisp_gpe_main;
if (a->is_en)
{
- /* add lgpe_ip4_lookup as possible next_node for ip4 lookup */
- if (lgm->ip4_lookup_next_lgpe_ip4_lookup == ~0)
- {
- lgm->ip4_lookup_next_lgpe_ip4_lookup = vlib_node_add_next (
- vnm->vlib_main, ip4_lookup_node.index,
- lgpe_ip4_lookup_node.index);
- }
- else
- {
- /* ask cp to re-add ifaces and defaults */
- }
+ lgm->is_en = 1;
}
else
{
- CLIB_UNUSED(uword * val);
- hash_pair_t * p;
- u32 * table_ids = 0, * table_id;
- lisp_gpe_tunnel_key_t * tunnels = 0, * tunnel;
- vnet_lisp_gpe_add_del_fwd_entry_args_t _at, * at = &_at;
- vnet_lisp_gpe_add_del_iface_args_t _ai, * ai= &_ai;
-
- /* remove all tunnels */
- mhash_foreach(tunnel, val, &lgm->lisp_gpe_tunnel_by_key, ({
- vec_add1(tunnels, tunnel[0]);
- }));
+ /* remove all entries */
+ vnet_lisp_gpe_fwd_entry_flush ();
- 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;
- vnet_lisp_gpe_add_del_fwd_entry (at, 0);
- }
- vec_free(tunnels);
+ /* disable all l3 ifaces */
+ lisp_gpe_tenant_flush ();
- /* disable all ifaces */
- hash_foreach_pair(p, lgm->lisp_gpe_hw_if_index_by_table_id, ({
- vec_add1(table_ids, p->key);
- }));
-
- vec_foreach(table_id, table_ids) {
- ai->is_add = 0;
- ai->table_id = table_id[0];
-
- /* disables interface and removes defaults */
- vnet_lisp_gpe_add_del_iface(ai, 0);
- }
- vec_free(table_ids);
+ lgm->is_en = 0;
}
return 0;
}
+/** 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)
+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;
+ unformat_input_t _line_input, *line_input = &_line_input;
u8 is_en = 1;
- vnet_lisp_gpe_enable_disable_args_t _a, * a = &_a;
+ vnet_lisp_gpe_enable_disable_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, "enable"))
- is_en = 1;
+ is_en = 1;
else if (unformat (line_input, "disable"))
- is_en = 0;
+ is_en = 0;
else
- {
- return clib_error_return (0, "parse error: '%U'",
- format_unformat_error, line_input);
- }
+ {
+ 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 *
+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");
+
+ /* *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;
+}
+
+/* *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");
+}
+
+
+/** LISP-GPE init function. */
clib_error_t *
-lisp_gpe_init (vlib_main_t *vm)
+lisp_gpe_init (vlib_main_t * vm)
{
- lisp_gpe_main_t * lgm = &lisp_gpe_main;
- clib_error_t * error = 0;
+ 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->vnet_main = vnet_get_main ();
lgm->vlib_main = vm;
lgm->im4 = &ip4_main;
- lgm->lookup_main = &ip4_main.lookup_main;
- lgm->ip4_lookup_next_lgpe_ip4_lookup = ~0;
+ lgm->im6 = &ip6_main;
+ lgm->lm4 = &ip4_main.lookup_main;
+ lgm->lm6 = &ip6_main.lookup_main;
- mhash_init (&lgm->lisp_gpe_tunnel_by_key, sizeof(uword),
- sizeof(lisp_gpe_tunnel_key_t));
+ lgm->lisp_gpe_fwd_entries =
+ hash_create_mem (0, sizeof (lisp_gpe_fwd_entry_key_t), sizeof (uword));
- udp_register_dst_port (vm, UDP_DST_PORT_lisp_gpe,
- lisp_gpe_input_node.index, 1 /* is_ip4 */);
+ 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