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-rw-r--r--vnet/vnet/l2/l2_fwd.c544
1 files changed, 0 insertions, 544 deletions
diff --git a/vnet/vnet/l2/l2_fwd.c b/vnet/vnet/l2/l2_fwd.c
deleted file mode 100644
index 710a9d9e8c3..00000000000
--- a/vnet/vnet/l2/l2_fwd.c
+++ /dev/null
@@ -1,544 +0,0 @@
-/*
- * l2_fwd.c : layer 2 forwarding using l2fib
- *
- * Copyright (c) 2013 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 <vlib/vlib.h>
-#include <vnet/vnet.h>
-#include <vnet/pg/pg.h>
-#include <vnet/ethernet/ethernet.h>
-#include <vlib/cli.h>
-
-#include <vnet/l2/l2_input.h>
-#include <vnet/l2/l2_bvi.h>
-#include <vnet/l2/l2_fwd.h>
-#include <vnet/l2/l2_fib.h>
-
-#include <vppinfra/error.h>
-#include <vppinfra/hash.h>
-#include <vppinfra/sparse_vec.h>
-
-
-/**
- * @file
- * @brief Ethernet Forwarding.
- *
- * Code in this file handles forwarding Layer 2 packets. This file calls
- * the FIB lookup, packet learning and the packet flooding as necessary.
- * Packet is then sent to the next graph node.
- */
-
-typedef struct
-{
-
- /* Hash table */
- BVT (clib_bihash) * mac_table;
-
- /* next node index for the L3 input node of each ethertype */
- next_by_ethertype_t l3_next;
-
- /* convenience variables */
- vlib_main_t *vlib_main;
- vnet_main_t *vnet_main;
-} l2fwd_main_t;
-
-typedef struct
-{
- /* per-pkt trace data */
- u8 src[6];
- u8 dst[6];
- u32 sw_if_index;
- u16 bd_index;
-} l2fwd_trace_t;
-
-/* packet trace format function */
-static u8 *
-format_l2fwd_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 *);
- l2fwd_trace_t *t = va_arg (*args, l2fwd_trace_t *);
-
- s = format (s, "l2-fwd: sw_if_index %d dst %U src %U bd_index %d",
- t->sw_if_index,
- format_ethernet_address, t->dst,
- format_ethernet_address, t->src, t->bd_index);
- return s;
-}
-
-l2fwd_main_t l2fwd_main;
-
-static vlib_node_registration_t l2fwd_node;
-
-#define foreach_l2fwd_error \
-_(L2FWD, "L2 forward packets") \
-_(FLOOD, "L2 forward misses") \
-_(HIT, "L2 forward hits") \
-_(BVI_BAD_MAC, "BVI L3 MAC mismatch") \
-_(BVI_ETHERTYPE, "BVI packet with unhandled ethertype") \
-_(FILTER_DROP, "Filter Mac Drop") \
-_(REFLECT_DROP, "Reflection Drop")
-
-typedef enum
-{
-#define _(sym,str) L2FWD_ERROR_##sym,
- foreach_l2fwd_error
-#undef _
- L2FWD_N_ERROR,
-} l2fwd_error_t;
-
-static char *l2fwd_error_strings[] = {
-#define _(sym,string) string,
- foreach_l2fwd_error
-#undef _
-};
-
-typedef enum
-{
- L2FWD_NEXT_L2_OUTPUT,
- L2FWD_NEXT_FLOOD,
- L2FWD_NEXT_DROP,
- L2FWD_N_NEXT,
-} l2fwd_next_t;
-
-/** Forward one packet based on the mac table lookup result. */
-
-static_always_inline void
-l2fwd_process (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- l2fwd_main_t * msm,
- vlib_error_main_t * em,
- vlib_buffer_t * b0,
- u32 sw_if_index0, l2fib_entry_result_t * result0, u32 * next0)
-{
- if (PREDICT_FALSE (result0->raw == ~0))
- {
- /*
- * lookup miss, so flood
- * TODO:replicate packet to each intf in bridge-domain
- * For now just drop
- */
- if (vnet_buffer (b0)->l2.feature_bitmap & L2INPUT_FEAT_UU_FLOOD)
- {
- *next0 = L2FWD_NEXT_FLOOD;
- }
- else
- {
- /* Flooding is disabled */
- b0->error = node->errors[L2FWD_ERROR_FLOOD];
- *next0 = L2FWD_NEXT_DROP;
- }
-
- }
- else
- {
-
- /* lookup hit, forward packet */
-#ifdef COUNTERS
- em->counters[node_counter_base_index + L2FWD_ERROR_HIT] += 1;
-#endif
-
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = result0->fields.sw_if_index;
- *next0 = L2FWD_NEXT_L2_OUTPUT;
-
- /* perform reflection check */
- if (PREDICT_FALSE (sw_if_index0 == result0->fields.sw_if_index))
- {
- b0->error = node->errors[L2FWD_ERROR_REFLECT_DROP];
- *next0 = L2FWD_NEXT_DROP;
-
- /* perform filter check */
- }
- else if (PREDICT_FALSE (result0->fields.filter))
- {
- b0->error = node->errors[L2FWD_ERROR_FILTER_DROP];
- *next0 = L2FWD_NEXT_DROP;
-
- /* perform BVI check */
- }
- else if (PREDICT_FALSE (result0->fields.bvi))
- {
- u32 rc;
- rc = l2_to_bvi (vm,
- msm->vnet_main,
- b0,
- vnet_buffer (b0)->sw_if_index[VLIB_TX],
- &msm->l3_next, next0);
-
- if (PREDICT_FALSE (rc))
- {
- if (rc == TO_BVI_ERR_BAD_MAC)
- {
- b0->error = node->errors[L2FWD_ERROR_BVI_BAD_MAC];
- *next0 = L2FWD_NEXT_DROP;
- }
- else if (rc == TO_BVI_ERR_ETHERTYPE)
- {
- b0->error = node->errors[L2FWD_ERROR_BVI_ETHERTYPE];
- *next0 = L2FWD_NEXT_DROP;
- }
- }
- }
- }
-}
-
-
-static uword
-l2fwd_node_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
- u32 n_left_from, *from, *to_next;
- l2fwd_next_t next_index;
- l2fwd_main_t *msm = &l2fwd_main;
- vlib_node_t *n = vlib_get_node (vm, l2fwd_node.index);
- CLIB_UNUSED (u32 node_counter_base_index) = n->error_heap_index;
- vlib_error_main_t *em = &vm->error_main;
- l2fib_entry_key_t cached_key;
- l2fib_entry_result_t cached_result;
-
- /* Clear the one-entry cache in case mac table was updated */
- cached_key.raw = ~0;
- cached_result.raw = ~0;
-
- from = vlib_frame_vector_args (frame);
- n_left_from = frame->n_vectors; /* number of packets to process */
- next_index = node->cached_next_index;
-
- while (n_left_from > 0)
- {
- u32 n_left_to_next;
-
- /* get space to enqueue frame to graph node "next_index" */
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
-
- while (n_left_from >= 8 && n_left_to_next >= 4)
- {
- u32 bi0, bi1, bi2, bi3;
- vlib_buffer_t *b0, *b1, *b2, *b3;
- u32 next0, next1, next2, next3;
- u32 sw_if_index0, sw_if_index1, sw_if_index2, sw_if_index3;
- ethernet_header_t *h0, *h1, *h2, *h3;
- l2fib_entry_key_t key0, key1, key2, key3;
- l2fib_entry_result_t result0, result1, result2, result3;
- u32 bucket0, bucket1, bucket2, bucket3;
-
- /* Prefetch next iteration. */
- {
- vlib_buffer_t *p4, *p5, *p6, *p7;
-
- p4 = vlib_get_buffer (vm, from[4]);
- p5 = vlib_get_buffer (vm, from[5]);
- p6 = vlib_get_buffer (vm, from[6]);
- p7 = vlib_get_buffer (vm, from[7]);
-
- vlib_prefetch_buffer_header (p4, LOAD);
- vlib_prefetch_buffer_header (p5, LOAD);
- vlib_prefetch_buffer_header (p6, LOAD);
- vlib_prefetch_buffer_header (p7, LOAD);
-
- CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE);
- CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE);
- CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, STORE);
- CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, STORE);
- }
-
- /* speculatively enqueue b0 and b1 to the current next frame */
- /* bi is "buffer index", b is pointer to the buffer */
- to_next[0] = bi0 = from[0];
- to_next[1] = bi1 = from[1];
- to_next[2] = bi2 = from[2];
- to_next[3] = bi3 = from[3];
- from += 4;
- to_next += 4;
- n_left_from -= 4;
- n_left_to_next -= 4;
-
- b0 = vlib_get_buffer (vm, bi0);
- b1 = vlib_get_buffer (vm, bi1);
- b2 = vlib_get_buffer (vm, bi2);
- b3 = vlib_get_buffer (vm, bi3);
-
- /* RX interface handles */
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
- sw_if_index2 = vnet_buffer (b2)->sw_if_index[VLIB_RX];
- sw_if_index3 = vnet_buffer (b3)->sw_if_index[VLIB_RX];
-
- h0 = vlib_buffer_get_current (b0);
- h1 = vlib_buffer_get_current (b1);
- h2 = vlib_buffer_get_current (b2);
- h3 = vlib_buffer_get_current (b3);
-
- if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
- {
- if (b0->flags & VLIB_BUFFER_IS_TRACED)
- {
- l2fwd_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->sw_if_index = sw_if_index0;
- t->bd_index = vnet_buffer (b0)->l2.bd_index;
- clib_memcpy (t->src, h0->src_address, 6);
- clib_memcpy (t->dst, h0->dst_address, 6);
- }
- if (b1->flags & VLIB_BUFFER_IS_TRACED)
- {
- l2fwd_trace_t *t =
- vlib_add_trace (vm, node, b1, sizeof (*t));
- t->sw_if_index = sw_if_index1;
- t->bd_index = vnet_buffer (b1)->l2.bd_index;
- clib_memcpy (t->src, h1->src_address, 6);
- clib_memcpy (t->dst, h1->dst_address, 6);
- }
- if (b2->flags & VLIB_BUFFER_IS_TRACED)
- {
- l2fwd_trace_t *t =
- vlib_add_trace (vm, node, b2, sizeof (*t));
- t->sw_if_index = sw_if_index2;
- t->bd_index = vnet_buffer (b2)->l2.bd_index;
- clib_memcpy (t->src, h2->src_address, 6);
- clib_memcpy (t->dst, h2->dst_address, 6);
- }
- if (b3->flags & VLIB_BUFFER_IS_TRACED)
- {
- l2fwd_trace_t *t =
- vlib_add_trace (vm, node, b3, sizeof (*t));
- t->sw_if_index = sw_if_index3;
- t->bd_index = vnet_buffer (b3)->l2.bd_index;
- clib_memcpy (t->src, h3->src_address, 6);
- clib_memcpy (t->dst, h3->dst_address, 6);
- }
- }
-
- /* process 2 pkts */
-#ifdef COUNTERS
- em->counters[node_counter_base_index + L2FWD_ERROR_L2FWD] += 4;
-#endif
- /* *INDENT-OFF* */
- l2fib_lookup_4 (msm->mac_table, &cached_key, &cached_result,
- h0->dst_address, h1->dst_address,
- h2->dst_address, h3->dst_address,
- vnet_buffer (b0)->l2.bd_index,
- vnet_buffer (b1)->l2.bd_index,
- vnet_buffer (b2)->l2.bd_index,
- vnet_buffer (b3)->l2.bd_index,
- &key0, /* not used */
- &key1, /* not used */
- &key2, /* not used */
- &key3, /* not used */
- &bucket0, /* not used */
- &bucket1, /* not used */
- &bucket2, /* not used */
- &bucket3, /* not used */
- &result0,
- &result1,
- &result2,
- &result3);
- /* *INDENT-ON* */
- l2fwd_process (vm, node, msm, em, b0, sw_if_index0, &result0,
- &next0);
- l2fwd_process (vm, node, msm, em, b1, sw_if_index1, &result1,
- &next1);
- l2fwd_process (vm, node, msm, em, b2, sw_if_index2, &result2,
- &next2);
- l2fwd_process (vm, node, msm, em, b3, sw_if_index3, &result3,
- &next3);
-
- /* verify speculative enqueues, maybe switch current next frame */
- /* if next0==next1==next_index then nothing special needs to be done */
- vlib_validate_buffer_enqueue_x4 (vm, node, next_index,
- to_next, n_left_to_next,
- bi0, bi1, bi2, bi3,
- next0, next1, next2, next3);
- }
-
- while (n_left_from > 0 && n_left_to_next > 0)
- {
- u32 bi0;
- vlib_buffer_t *b0;
- u32 next0;
- u32 sw_if_index0;
- ethernet_header_t *h0;
- l2fib_entry_key_t key0;
- l2fib_entry_result_t result0;
- u32 bucket0;
-
- /* speculatively enqueue b0 to the current next frame */
- 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);
-
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
-
- h0 = vlib_buffer_get_current (b0);
-
- if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
- && (b0->flags & VLIB_BUFFER_IS_TRACED)))
- {
- l2fwd_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t));
- t->sw_if_index = sw_if_index0;
- t->bd_index = vnet_buffer (b0)->l2.bd_index;
- clib_memcpy (t->src, h0->src_address, 6);
- clib_memcpy (t->dst, h0->dst_address, 6);
- }
-
- /* process 1 pkt */
-#ifdef COUNTERS
- em->counters[node_counter_base_index + L2FWD_ERROR_L2FWD] += 1;
-#endif
- l2fib_lookup_1 (msm->mac_table, &cached_key, &cached_result, h0->dst_address, vnet_buffer (b0)->l2.bd_index, &key0, /* not used */
- &bucket0, /* not used */
- &result0);
- l2fwd_process (vm, node, msm, em, b0, sw_if_index0, &result0,
- &next0);
-
- /* verify speculative enqueue, maybe switch current next frame */
- 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 frame->n_vectors;
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (l2fwd_node,static) = {
- .function = l2fwd_node_fn,
- .name = "l2-fwd",
- .vector_size = sizeof (u32),
- .format_trace = format_l2fwd_trace,
- .type = VLIB_NODE_TYPE_INTERNAL,
-
- .n_errors = ARRAY_LEN(l2fwd_error_strings),
- .error_strings = l2fwd_error_strings,
-
- .n_next_nodes = L2FWD_N_NEXT,
-
- /* edit / add dispositions here */
- .next_nodes = {
- [L2FWD_NEXT_L2_OUTPUT] = "l2-output",
- [L2FWD_NEXT_FLOOD] = "l2-flood",
- [L2FWD_NEXT_DROP] = "error-drop",
- },
-};
-/* *INDENT-ON* */
-
-VLIB_NODE_FUNCTION_MULTIARCH (l2fwd_node, l2fwd_node_fn)
- clib_error_t *l2fwd_init (vlib_main_t * vm)
-{
- l2fwd_main_t *mp = &l2fwd_main;
-
- mp->vlib_main = vm;
- mp->vnet_main = vnet_get_main ();
-
- /* init the hash table ptr */
- mp->mac_table = get_mac_table ();
-
- /* Initialize the next nodes for each ethertype */
- next_by_ethertype_init (&mp->l3_next);
-
- return 0;
-}
-
-VLIB_INIT_FUNCTION (l2fwd_init);
-
-
-/** Add the L3 input node for this ethertype to the next nodes structure. */
-void
-l2fwd_register_input_type (vlib_main_t * vm,
- ethernet_type_t type, u32 node_index)
-{
- l2fwd_main_t *mp = &l2fwd_main;
- u32 next_index;
-
- next_index = vlib_node_add_next (vm, l2fwd_node.index, node_index);
-
- next_by_ethertype_register (&mp->l3_next, type, next_index);
-}
-
-
-/**
- * Set subinterface forward enable/disable.
- * The CLI format is:
- * set interface l2 forward <interface> [disable]
- */
-static clib_error_t *
-int_fwd (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd)
-{
- vnet_main_t *vnm = vnet_get_main ();
- clib_error_t *error = 0;
- u32 sw_if_index;
- u32 enable;
-
- if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
- {
- error = clib_error_return (0, "unknown interface `%U'",
- format_unformat_error, input);
- goto done;
- }
-
- enable = 1;
- if (unformat (input, "disable"))
- {
- enable = 0;
- }
-
- /* set the interface flag */
- if (l2input_intf_config (sw_if_index)->xconnect)
- {
- l2input_intf_bitmap_enable (sw_if_index, L2INPUT_FEAT_XCONNECT, enable);
- }
- else
- {
- l2input_intf_bitmap_enable (sw_if_index, L2INPUT_FEAT_FWD, enable);
- }
-
-done:
- return error;
-}
-
-/*?
- * Layer 2 unicast forwarding can be enabled and disabled on each
- * interface and on each bridge-domain. Use this command to
- * manage interfaces. It is enabled by default.
- *
- * @cliexpar
- * Example of how to enable fowarding:
- * @cliexcmd{set interface l2 forward GigabitEthernet0/8/0}
- * Example of how to disable fowarding:
- * @cliexcmd{set interface l2 forward GigabitEthernet0/8/0 disable}
-?*/
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (int_fwd_cli, static) = {
- .path = "set interface l2 forward",
- .short_help = "set interface l2 forward <interface> [disable]",
- .function = int_fwd,
-};
-/* *INDENT-ON* */
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */