+++ /dev/null
-/*
- * 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:
- *
- * 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 <vnet/dpo/l2_bridge_dpo.h>
-#include <vnet/fib/fib_node.h>
-#include <vnet/ethernet/ethernet.h>
-
-/*
- * The 'DB' of L2 bridge DPOs.
- * There is only one per-interface, so this is a per-interface vector
- */
-static index_t *l2_bridge_dpo_db;
-
-static l2_bridge_dpo_t *
-l2_bridge_dpo_alloc (void)
-{
- l2_bridge_dpo_t *l2b;
-
- pool_get(l2_bridge_dpo_pool, l2b);
-
- return (l2b);
-}
-
-static inline l2_bridge_dpo_t *
-l2_bridge_dpo_get_from_dpo (const dpo_id_t *dpo)
-{
- ASSERT(DPO_L2_BRIDGE == dpo->dpoi_type);
-
- return (l2_bridge_dpo_get(dpo->dpoi_index));
-}
-
-static inline index_t
-l2_bridge_dpo_get_index (l2_bridge_dpo_t *l2b)
-{
- return (l2b - l2_bridge_dpo_pool);
-}
-
-static void
-l2_bridge_dpo_lock (dpo_id_t *dpo)
-{
- l2_bridge_dpo_t *l2b;
-
- l2b = l2_bridge_dpo_get_from_dpo(dpo);
- l2b->l2b_locks++;
-}
-
-static void
-l2_bridge_dpo_unlock (dpo_id_t *dpo)
-{
- l2_bridge_dpo_t *l2b;
-
- l2b = l2_bridge_dpo_get_from_dpo(dpo);
- l2b->l2b_locks--;
-
- if (0 == l2b->l2b_locks)
- {
- l2_bridge_dpo_db[l2b->l2b_sw_if_index] = INDEX_INVALID;
- pool_put(l2_bridge_dpo_pool, l2b);
- }
-}
-
-/*
- * l2_bridge_dpo_add_or_lock
- *
- * Add/create and lock a new or lock an existing for the L2 Bridge
- * on the interface given
- */
-void
-l2_bridge_dpo_add_or_lock (u32 sw_if_index,
- dpo_id_t *dpo)
-{
- l2_bridge_dpo_t *l2b;
-
- vec_validate_init_empty(l2_bridge_dpo_db,
- sw_if_index,
- INDEX_INVALID);
-
- if (INDEX_INVALID == l2_bridge_dpo_db[sw_if_index])
- {
- l2b = l2_bridge_dpo_alloc();
-
- l2b->l2b_sw_if_index = sw_if_index;
-
- l2_bridge_dpo_db[sw_if_index] =
- l2_bridge_dpo_get_index(l2b);
- }
- else
- {
- l2b = l2_bridge_dpo_get(l2_bridge_dpo_db[sw_if_index]);
- }
-
- dpo_set(dpo, DPO_L2_BRIDGE, DPO_PROTO_ETHERNET, l2_bridge_dpo_get_index(l2b));
-}
-
-
-static clib_error_t *
-l2_bridge_dpo_interface_state_change (vnet_main_t * vnm,
- u32 sw_if_index,
- u32 flags)
-{
- /*
- */
- return (NULL);
-}
-
-VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION(
- l2_bridge_dpo_interface_state_change);
-
-/**
- * @brief Registered callback for HW interface state changes
- */
-static clib_error_t *
-l2_bridge_dpo_hw_interface_state_change (vnet_main_t * vnm,
- u32 hw_if_index,
- u32 flags)
-{
- return (NULL);
-}
-
-VNET_HW_INTERFACE_LINK_UP_DOWN_FUNCTION(
- l2_bridge_dpo_hw_interface_state_change);
-
-static clib_error_t *
-l2_bridge_dpo_interface_delete (vnet_main_t * vnm,
- u32 sw_if_index,
- u32 is_add)
-{
- return (NULL);
-}
-
-VNET_SW_INTERFACE_ADD_DEL_FUNCTION(
- l2_bridge_dpo_interface_delete);
-
-u8*
-format_l2_bridge_dpo (u8* s, va_list *ap)
-{
- index_t index = va_arg(*ap, index_t);
- CLIB_UNUSED(u32 indent) = va_arg(*ap, u32);
- vnet_main_t * vnm = vnet_get_main();
- l2_bridge_dpo_t *l2b = l2_bridge_dpo_get(index);
-
- return (format(s, "l2-bridge-%U-dpo",
- format_vnet_sw_interface_name,
- vnm,
- vnet_get_sw_interface(vnm, l2b->l2b_sw_if_index)));
-}
-
-static void
-l2_bridge_dpo_mem_show (void)
-{
- fib_show_memory_usage("L2-bridge",
- pool_elts(l2_bridge_dpo_pool),
- pool_len(l2_bridge_dpo_pool),
- sizeof(l2_bridge_dpo_t));
-}
-
-
-const static dpo_vft_t l2_bridge_dpo_vft = {
- .dv_lock = l2_bridge_dpo_lock,
- .dv_unlock = l2_bridge_dpo_unlock,
- .dv_format = format_l2_bridge_dpo,
- .dv_mem_show = l2_bridge_dpo_mem_show,
-};
-
-/**
- * @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 l2_bridge_dpo_l2_nodes[] =
-{
- "l2-bridge-dpo",
- NULL,
-};
-
-const static char* const * const l2_bridge_dpo_nodes[DPO_PROTO_NUM] =
-{
- [DPO_PROTO_ETHERNET] = l2_bridge_dpo_l2_nodes,
-};
-
-void
-l2_bridge_dpo_module_init (void)
-{
- dpo_register(DPO_L2_BRIDGE,
- &l2_bridge_dpo_vft,
- l2_bridge_dpo_nodes);
-}
-
-/**
- * @brief Interface DPO trace data
- */
-typedef struct l2_bridge_dpo_trace_t_
-{
- u32 sw_if_index;
-} l2_bridge_dpo_trace_t;
-
-typedef enum l2_bridge_dpo_next_t_
-{
- L2_BRIDGE_DPO_DROP = 0,
- L2_BRIDGE_DPO_OUTPUT = 1,
-} l2_bridge_dpo_next_t;
-
-always_inline uword
-l2_bridge_dpo_inline (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * from_frame)
-{
- 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 >= 4 && n_left_to_next > 2)
- {
- const l2_bridge_dpo_t *l2b0, *l2b1;
- u32 bi0, l2bi0, bi1, l2bi1;
- vlib_buffer_t *b0, *b1;
- u8 len0, len1;
-
- bi0 = from[0];
- to_next[0] = bi0;
- bi1 = from[1];
- to_next[1] = bi1;
- from += 2;
- to_next += 2;
- n_left_from -= 2;
- n_left_to_next -= 2;
-
- b0 = vlib_get_buffer (vm, bi0);
- b1 = vlib_get_buffer (vm, bi1);
-
- l2bi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
- l2bi1 = vnet_buffer(b1)->ip.adj_index[VLIB_TX];
- l2b0 = l2_bridge_dpo_get(l2bi0);
- l2b1 = l2_bridge_dpo_get(l2bi1);
-
- vnet_buffer(b0)->sw_if_index[VLIB_TX] = l2b0->l2b_sw_if_index;
- vnet_buffer(b1)->sw_if_index[VLIB_TX] = l2b1->l2b_sw_if_index;
-
- len0 = ((u8*)vlib_buffer_get_current(b0) -
- (u8*)ethernet_buffer_get_header(b0));
- len1 = ((u8*)vlib_buffer_get_current(b1) -
- (u8*)ethernet_buffer_get_header(b1));
- vnet_buffer(b0)->l2.l2_len = len0;
- vnet_buffer(b1)->l2.l2_len = len1;
-
- vlib_buffer_advance(b0, -len0);
- vlib_buffer_advance(b1, -len1);
-
- if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- l2_bridge_dpo_trace_t *tr0;
-
- tr0 = vlib_add_trace (vm, node, b0, sizeof (*tr0));
- tr0->sw_if_index = l2b0->l2b_sw_if_index;
- }
- if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED))
- {
- l2_bridge_dpo_trace_t *tr1;
-
- tr1 = vlib_add_trace (vm, node, b1, sizeof (*tr1));
- tr1->sw_if_index = l2b1->l2b_sw_if_index;
- }
-
- vlib_validate_buffer_enqueue_x2(vm, node, next_index, to_next,
- n_left_to_next, bi0, bi1,
- L2_BRIDGE_DPO_OUTPUT,
- L2_BRIDGE_DPO_OUTPUT);
- }
-
- while (n_left_from > 0 && n_left_to_next > 0)
- {
- const l2_bridge_dpo_t * l2b0;
- vlib_buffer_t * b0;
- u32 bi0, l2bi0;
- u8 len0;
-
- 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);
-
- l2bi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
- l2b0 = l2_bridge_dpo_get(l2bi0);
-
- vnet_buffer(b0)->sw_if_index[VLIB_TX] = l2b0->l2b_sw_if_index;
-
- /*
- * take that, rewind it back...
- */
- len0 = ((u8*)vlib_buffer_get_current(b0) -
- (u8*)ethernet_buffer_get_header(b0));
- vnet_buffer(b0)->l2.l2_len = len0;
- vlib_buffer_advance(b0, -len0);
-
- if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- l2_bridge_dpo_trace_t *tr;
-
- tr = vlib_add_trace (vm, node, b0, sizeof (*tr));
- tr->sw_if_index = l2b0->l2b_sw_if_index;
- }
-
- vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next,
- n_left_to_next, bi0,
- L2_BRIDGE_DPO_OUTPUT);
- }
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
- }
- return from_frame->n_vectors;
-}
-
-static u8 *
-format_l2_bridge_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 *);
- l2_bridge_dpo_trace_t * t = va_arg (*args, l2_bridge_dpo_trace_t *);
- u32 indent = format_get_indent (s);
- s = format (s, "%U sw_if_index:%d",
- format_white_space, indent,
- t->sw_if_index);
- return s;
-}
-
-static uword
-l2_bridge_dpo_l2 (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * from_frame)
-{
- return (l2_bridge_dpo_inline(vm, node, from_frame));
-}
-
-
-VLIB_REGISTER_NODE (l2_bridge_dpo_l2_node) = {
- .function = l2_bridge_dpo_l2,
- .name = "l2-bridge-dpo",
- .vector_size = sizeof (u32),
- .format_trace = format_l2_bridge_dpo_trace,
-
- .n_next_nodes = 2,
- .next_nodes = {
- [L2_BRIDGE_DPO_DROP] = "error-drop",
- [L2_BRIDGE_DPO_OUTPUT] = "l2-output",
- },
-};
-
-VLIB_NODE_FUNCTION_MULTIARCH (l2_bridge_dpo_l2_node,
- l2_bridge_dpo_l2)
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