/* * Copyright (c) 2018 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: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include <plugins/gbp/gbp.h> #include <plugins/gbp/gbp_fwd_dpo.h> #include <vnet/ethernet/ethernet.h> #ifndef CLIB_MARCH_VARIANT /** * The 'DB' of GBP FWD DPOs. * There is one per-proto */ static index_t gbp_fwd_dpo_db[DPO_PROTO_NUM] = { INDEX_INVALID }; /** * DPO type registered for these GBP FWD */ static dpo_type_t gbp_fwd_dpo_type; /** * @brief pool of all interface DPOs */ gbp_fwd_dpo_t *gbp_fwd_dpo_pool; static gbp_fwd_dpo_t * gbp_fwd_dpo_alloc (void) { gbp_fwd_dpo_t *gfd; pool_get (gbp_fwd_dpo_pool, gfd); return (gfd); } static inline gbp_fwd_dpo_t * gbp_fwd_dpo_get_from_dpo (const dpo_id_t * dpo) { ASSERT (gbp_fwd_dpo_type == dpo->dpoi_type); return (gbp_fwd_dpo_get (dpo->dpoi_index)); } static inline index_t gbp_fwd_dpo_get_index (gbp_fwd_dpo_t * gfd) { return (gfd - gbp_fwd_dpo_pool); } static void gbp_fwd_dpo_lock (dpo_id_t * dpo) { gbp_fwd_dpo_t *gfd; gfd = gbp_fwd_dpo_get_from_dpo (dpo); gfd->gfd_locks++; } static void gbp_fwd_dpo_unlock (dpo_id_t * dpo) { gbp_fwd_dpo_t *gfd; gfd = gbp_fwd_dpo_get_from_dpo (dpo); gfd->gfd_locks--; if (0 == gfd->gfd_locks) { gbp_fwd_dpo_db[gfd->gfd_proto] = INDEX_INVALID; pool_put (gbp_fwd_dpo_pool, gfd); } } void gbp_fwd_dpo_add_or_lock (dpo_proto_t dproto, dpo_id_t * dpo) { gbp_fwd_dpo_t *gfd; if (INDEX_INVALID == gbp_fwd_dpo_db[dproto]) { gfd = gbp_fwd_dpo_alloc (); gfd->gfd_proto = dproto; gbp_fwd_dpo_db[dproto] = gbp_fwd_dpo_get_index (gfd); } else { gfd = gbp_fwd_dpo_get (gbp_fwd_dpo_db[dproto]); } dpo_set (dpo, gbp_fwd_dpo_type, dproto, gbp_fwd_dpo_get_index (gfd)); } u8 * format_gbp_fwd_dpo (u8 * s, va_list * ap) { index_t index = va_arg (*ap, index_t); CLIB_UNUSED (u32 indent) = va_arg (*ap, u32); gbp_fwd_dpo_t *gfd = gbp_fwd_dpo_get (index); return (format (s, "gbp-fwd-dpo: %U", format_dpo_proto, gfd->gfd_proto)); } const static dpo_vft_t gbp_fwd_dpo_vft = { .dv_lock = gbp_fwd_dpo_lock, .dv_unlock = gbp_fwd_dpo_unlock, .dv_format = format_gbp_fwd_dpo, }; /** * @brief The per-protocol VLIB graph nodes that are assigned to a glean * object. * * this means that these graph nodes are ones from which a glean is the * parent object in the DPO-graph. */ const static char *const gbp_fwd_dpo_ip4_nodes[] = { "ip4-gbp-fwd-dpo", NULL, }; const static char *const gbp_fwd_dpo_ip6_nodes[] = { "ip6-gbp-fwd-dpo", NULL, }; const static char *const *const gbp_fwd_dpo_nodes[DPO_PROTO_NUM] = { [DPO_PROTO_IP4] = gbp_fwd_dpo_ip4_nodes, [DPO_PROTO_IP6] = gbp_fwd_dpo_ip6_nodes, }; dpo_type_t gbp_fwd_dpo_get_type (void) { return (gbp_fwd_dpo_type); } static clib_error_t * gbp_fwd_dpo_module_init (vlib_main_t * vm) { dpo_proto_t dproto; FOR_EACH_DPO_PROTO (dproto) { gbp_fwd_dpo_db[dproto] = INDEX_INVALID; } gbp_fwd_dpo_type = dpo_register_new_type (&gbp_fwd_dpo_vft, gbp_fwd_dpo_nodes); return (NULL); } VLIB_INIT_FUNCTION (gbp_fwd_dpo_module_init); #endif /* CLIB_MARCH_VARIANT */ typedef struct gbp_fwd_dpo_trace_t_ { u32 sclass; u32 dpo_index; } gbp_fwd_dpo_trace_t; typedef enum { GBP_FWD_DROP, GBP_FWD_FWD, GBP_FWD_N_NEXT, } gbp_fwd_next_t; always_inline uword gbp_fwd_dpo_inline (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame, fib_protocol_t fproto) { u32 n_left_from, next_index, *from, *to_next; 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 > 0 && n_left_to_next > 0) { const dpo_id_t *next_dpo0; vlib_buffer_t *b0; sclass_t sclass0; u32 bi0, next0; 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); sclass0 = vnet_buffer2 (b0)->gbp.sclass; next_dpo0 = gbp_epg_dpo_lookup (sclass0, fproto); if (PREDICT_TRUE (NULL != next_dpo0)) { vnet_buffer (b0)->ip.adj_index[VLIB_TX] = next_dpo0->dpoi_index; next0 = GBP_FWD_FWD; } else { next0 = GBP_FWD_DROP; } if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) { gbp_fwd_dpo_trace_t *tr; tr = vlib_add_trace (vm, node, b0, sizeof (*tr)); tr->sclass = sclass0; tr->dpo_index = (NULL != next_dpo0 ? next_dpo0->dpoi_index : ~0); } 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; } static u8 * format_gbp_fwd_dpo_trace (u8 * s, va_list * args) { CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); gbp_fwd_dpo_trace_t *t = va_arg (*args, gbp_fwd_dpo_trace_t *); s = format (s, " sclass:%d dpo:%d", t->sclass, t->dpo_index); return s; } VLIB_NODE_FN (ip4_gbp_fwd_dpo_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame) { return (gbp_fwd_dpo_inline (vm, node, from_frame, FIB_PROTOCOL_IP4)); } VLIB_NODE_FN (ip6_gbp_fwd_dpo_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame) { return (gbp_fwd_dpo_inline (vm, node, from_frame, FIB_PROTOCOL_IP6)); } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (ip4_gbp_fwd_dpo_node) = { .name = "ip4-gbp-fwd-dpo", .vector_size = sizeof (u32), .format_trace = format_gbp_fwd_dpo_trace, .n_next_nodes = GBP_FWD_N_NEXT, .next_nodes = { [GBP_FWD_DROP] = "ip4-drop", [GBP_FWD_FWD] = "ip4-dvr-dpo", } }; VLIB_REGISTER_NODE (ip6_gbp_fwd_dpo_node) = { .name = "ip6-gbp-fwd-dpo", .vector_size = sizeof (u32), .format_trace = format_gbp_fwd_dpo_trace, .n_next_nodes = GBP_FWD_N_NEXT, .next_nodes = { [GBP_FWD_DROP] = "ip6-drop", [GBP_FWD_FWD] = "ip6-dvr-dpo", } }; /* *INDENT-ON* */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */