diff options
Diffstat (limited to 'src/vnet/gre/node.c')
| -rw-r--r-- | src/vnet/gre/node.c | 598 |
1 files changed, 0 insertions, 598 deletions
diff --git a/src/vnet/gre/node.c b/src/vnet/gre/node.c deleted file mode 100644 index fdd3118bf3c..00000000000 --- a/src/vnet/gre/node.c +++ /dev/null @@ -1,598 +0,0 @@ -/* - * node.c: gre packet processing - * - * Copyright (c) 2012 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/pg/pg.h> -#include <vnet/gre/gre.h> -#include <vnet/mpls/mpls.h> -#include <vppinfra/sparse_vec.h> - -#define foreach_gre_input_next \ -_(PUNT, "error-punt") \ -_(DROP, "error-drop") \ -_(ETHERNET_INPUT, "ethernet-input") \ -_(IP4_INPUT, "ip4-input") \ -_(IP6_INPUT, "ip6-input") \ -_(MPLS_INPUT, "mpls-input") - -typedef enum -{ -#define _(s,n) GRE_INPUT_NEXT_##s, - foreach_gre_input_next -#undef _ - GRE_INPUT_N_NEXT, -} gre_input_next_t; - -typedef struct -{ - u32 tunnel_id; - u32 length; - ip46_address_t src; - ip46_address_t dst; -} gre_rx_trace_t; - -extern u8 *format_gre_rx_trace (u8 * s, va_list * args); - -#ifndef CLIB_MARCH_VARIANT -u8 * -format_gre_rx_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 *); - gre_rx_trace_t *t = va_arg (*args, gre_rx_trace_t *); - - s = format (s, "GRE: tunnel %d len %d src %U dst %U", - t->tunnel_id, clib_net_to_host_u16 (t->length), - format_ip46_address, &t->src, IP46_TYPE_ANY, - format_ip46_address, &t->dst, IP46_TYPE_ANY); - return s; -} -#endif /* CLIB_MARCH_VARIANT */ - -typedef struct -{ - /* Sparse vector mapping gre protocol in network byte order - to next index. */ - u16 *next_by_protocol; -} gre_input_runtime_t; - -always_inline void -gre_trace (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_buffer_t * b, - u32 tun_sw_if_index, const ip6_header_t * ip6, - const ip4_header_t * ip4, int is_ipv6) -{ - gre_rx_trace_t *tr = vlib_add_trace (vm, node, - b, sizeof (*tr)); - tr->tunnel_id = tun_sw_if_index; - if (is_ipv6) - { - tr->length = ip6->payload_length; - tr->src.ip6.as_u64[0] = ip6->src_address.as_u64[0]; - tr->src.ip6.as_u64[1] = ip6->src_address.as_u64[1]; - tr->dst.ip6.as_u64[0] = ip6->dst_address.as_u64[0]; - tr->dst.ip6.as_u64[1] = ip6->dst_address.as_u64[1]; - } - else - { - tr->length = ip4->length; - tr->src.as_u64[0] = tr->src.as_u64[1] = 0; - tr->dst.as_u64[0] = tr->dst.as_u64[1] = 0; - tr->src.ip4.as_u32 = ip4->src_address.as_u32; - tr->dst.ip4.as_u32 = ip4->dst_address.as_u32; - } -} - -always_inline void -gre_tunnel_get (const gre_main_t * gm, vlib_node_runtime_t * node, - vlib_buffer_t * b, u16 * next, const gre_tunnel_key_t * key, - gre_tunnel_key_t * cached_key, u32 * tun_sw_if_index, - u32 * cached_tun_sw_if_index, int is_ipv6) -{ - const uword *p; - p = is_ipv6 ? hash_get_mem (gm->tunnel_by_key6, &key->gtk_v6) - : hash_get_mem (gm->tunnel_by_key4, &key->gtk_v4); - if (PREDICT_FALSE (!p)) - { - *next = GRE_INPUT_NEXT_DROP; - b->error = node->errors[GRE_ERROR_NO_SUCH_TUNNEL]; - *tun_sw_if_index = ~0; - } - else - { - const gre_tunnel_t *tun; - tun = pool_elt_at_index (gm->tunnels, *p); - *cached_tun_sw_if_index = *tun_sw_if_index = tun->sw_if_index; - if (is_ipv6) - cached_key->gtk_v6 = key->gtk_v6; - else - cached_key->gtk_v4 = key->gtk_v4; - } -} - -always_inline uword -gre_input (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame, - const int is_ipv6) -{ - gre_main_t *gm = &gre_main; - u32 *from, n_left_from; - vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs; - u16 nexts[VLIB_FRAME_SIZE], *next = nexts; - u16 cached_protocol = ~0; - u32 cached_next_index = SPARSE_VEC_INVALID_INDEX; - u32 cached_tun_sw_if_index = ~0; - gre_tunnel_key_t cached_key; - - from = vlib_frame_vector_args (frame); - n_left_from = frame->n_vectors; - vlib_get_buffers (vm, from, bufs, n_left_from); - - if (is_ipv6) - clib_memset (&cached_key.gtk_v6, 0xff, sizeof (cached_key.gtk_v6)); - else - clib_memset (&cached_key.gtk_v4, 0xff, sizeof (cached_key.gtk_v4)); - - while (n_left_from >= 2) - { - const ip6_header_t *ip6[2]; - const ip4_header_t *ip4[2]; - const gre_header_t *gre[2]; - u32 nidx[2]; - next_info_t ni[2]; - u8 type[2]; - u16 version[2]; - u32 len[2]; - gre_tunnel_key_t key[2]; - u8 matched[2]; - u32 tun_sw_if_index[2]; - - if (PREDICT_TRUE (n_left_from >= 6)) - { - vlib_prefetch_buffer_data (b[2], LOAD); - vlib_prefetch_buffer_data (b[3], LOAD); - vlib_prefetch_buffer_header (b[4], STORE); - vlib_prefetch_buffer_header (b[5], STORE); - } - - if (is_ipv6) - { - /* ip6_local hands us the ip header, not the gre header */ - ip6[0] = vlib_buffer_get_current (b[0]); - ip6[1] = vlib_buffer_get_current (b[1]); - gre[0] = (void *) (ip6[0] + 1); - gre[1] = (void *) (ip6[1] + 1); - vlib_buffer_advance (b[0], sizeof (*ip6[0]) + sizeof (*gre[0])); - vlib_buffer_advance (b[1], sizeof (*ip6[0]) + sizeof (*gre[0])); - } - else - { - /* ip4_local hands us the ip header, not the gre header */ - ip4[0] = vlib_buffer_get_current (b[0]); - ip4[1] = vlib_buffer_get_current (b[1]); - gre[0] = (void *) (ip4[0] + 1); - gre[1] = (void *) (ip4[1] + 1); - vlib_buffer_advance (b[0], sizeof (*ip4[0]) + sizeof (*gre[0])); - vlib_buffer_advance (b[1], sizeof (*ip4[0]) + sizeof (*gre[0])); - } - - if (PREDICT_TRUE (cached_protocol == gre[0]->protocol)) - { - nidx[0] = cached_next_index; - } - else - { - cached_next_index = nidx[0] = - sparse_vec_index (gm->next_by_protocol, gre[0]->protocol); - cached_protocol = gre[0]->protocol; - } - if (PREDICT_TRUE (cached_protocol == gre[1]->protocol)) - { - nidx[1] = cached_next_index; - } - else - { - cached_next_index = nidx[1] = - sparse_vec_index (gm->next_by_protocol, gre[1]->protocol); - cached_protocol = gre[1]->protocol; - } - - ni[0] = vec_elt (gm->next_by_protocol, nidx[0]); - ni[1] = vec_elt (gm->next_by_protocol, nidx[1]); - next[0] = ni[0].next_index; - next[1] = ni[1].next_index; - type[0] = ni[0].tunnel_type; - type[1] = ni[1].tunnel_type; - - b[0]->error = nidx[0] == SPARSE_VEC_INVALID_INDEX - ? node->errors[GRE_ERROR_UNKNOWN_PROTOCOL] - : node->errors[GRE_ERROR_NONE]; - b[1]->error = nidx[1] == SPARSE_VEC_INVALID_INDEX - ? node->errors[GRE_ERROR_UNKNOWN_PROTOCOL] - : node->errors[GRE_ERROR_NONE]; - - version[0] = clib_net_to_host_u16 (gre[0]->flags_and_version); - version[1] = clib_net_to_host_u16 (gre[1]->flags_and_version); - version[0] &= GRE_VERSION_MASK; - version[1] &= GRE_VERSION_MASK; - - b[0]->error = version[0] - ? node->errors[GRE_ERROR_UNSUPPORTED_VERSION] : b[0]->error; - next[0] = version[0] ? GRE_INPUT_NEXT_DROP : next[0]; - b[1]->error = version[1] - ? node->errors[GRE_ERROR_UNSUPPORTED_VERSION] : b[1]->error; - next[1] = version[1] ? GRE_INPUT_NEXT_DROP : next[1]; - - len[0] = vlib_buffer_length_in_chain (vm, b[0]); - len[1] = vlib_buffer_length_in_chain (vm, b[1]); - - /* always search for P2P types in the DP */ - if (is_ipv6) - { - gre_mk_key6 (&ip6[0]->dst_address, - &ip6[0]->src_address, - vnet_buffer (b[0])->ip.fib_index, - type[0], TUNNEL_MODE_P2P, 0, &key[0].gtk_v6); - gre_mk_key6 (&ip6[1]->dst_address, - &ip6[1]->src_address, - vnet_buffer (b[1])->ip.fib_index, - type[1], TUNNEL_MODE_P2P, 0, &key[1].gtk_v6); - matched[0] = gre_match_key6 (&cached_key.gtk_v6, &key[0].gtk_v6); - matched[1] = gre_match_key6 (&cached_key.gtk_v6, &key[1].gtk_v6); - } - else - { - gre_mk_key4 (ip4[0]->dst_address, - ip4[0]->src_address, - vnet_buffer (b[0])->ip.fib_index, - type[0], TUNNEL_MODE_P2P, 0, &key[0].gtk_v4); - gre_mk_key4 (ip4[1]->dst_address, - ip4[1]->src_address, - vnet_buffer (b[1])->ip.fib_index, - type[1], TUNNEL_MODE_P2P, 0, &key[1].gtk_v4); - matched[0] = gre_match_key4 (&cached_key.gtk_v4, &key[0].gtk_v4); - matched[1] = gre_match_key4 (&cached_key.gtk_v4, &key[1].gtk_v4); - } - - tun_sw_if_index[0] = cached_tun_sw_if_index; - tun_sw_if_index[1] = cached_tun_sw_if_index; - if (PREDICT_FALSE (!matched[0])) - gre_tunnel_get (gm, node, b[0], &next[0], &key[0], &cached_key, - &tun_sw_if_index[0], &cached_tun_sw_if_index, - is_ipv6); - if (PREDICT_FALSE (!matched[1])) - gre_tunnel_get (gm, node, b[1], &next[1], &key[1], &cached_key, - &tun_sw_if_index[1], &cached_tun_sw_if_index, - is_ipv6); - - if (PREDICT_TRUE (next[0] > GRE_INPUT_NEXT_DROP)) - { - vlib_increment_combined_counter (&gm->vnet_main-> - interface_main.combined_sw_if_counters - [VNET_INTERFACE_COUNTER_RX], - vm->thread_index, - tun_sw_if_index[0], - 1 /* packets */ , - len[0] /* bytes */ ); - vnet_buffer (b[0])->sw_if_index[VLIB_RX] = tun_sw_if_index[0]; - } - if (PREDICT_TRUE (next[1] > GRE_INPUT_NEXT_DROP)) - { - vlib_increment_combined_counter (&gm->vnet_main-> - interface_main.combined_sw_if_counters - [VNET_INTERFACE_COUNTER_RX], - vm->thread_index, - tun_sw_if_index[1], - 1 /* packets */ , - len[1] /* bytes */ ); - vnet_buffer (b[1])->sw_if_index[VLIB_RX] = tun_sw_if_index[1]; - } - - vnet_buffer (b[0])->sw_if_index[VLIB_TX] = (u32) ~0; - vnet_buffer (b[1])->sw_if_index[VLIB_TX] = (u32) ~0; - - if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED)) - gre_trace (vm, node, b[0], tun_sw_if_index[0], ip6[0], ip4[0], - is_ipv6); - if (PREDICT_FALSE (b[1]->flags & VLIB_BUFFER_IS_TRACED)) - gre_trace (vm, node, b[1], tun_sw_if_index[1], ip6[1], ip4[1], - is_ipv6); - - b += 2; - next += 2; - n_left_from -= 2; - } - - while (n_left_from >= 1) - { - const ip6_header_t *ip6[1]; - const ip4_header_t *ip4[1]; - const gre_header_t *gre[1]; - u32 nidx[1]; - next_info_t ni[1]; - u8 type[1]; - u16 version[1]; - u32 len[1]; - gre_tunnel_key_t key[1]; - u8 matched[1]; - u32 tun_sw_if_index[1]; - - if (PREDICT_TRUE (n_left_from >= 3)) - { - vlib_prefetch_buffer_data (b[1], LOAD); - vlib_prefetch_buffer_header (b[2], STORE); - } - - if (is_ipv6) - { - /* ip6_local hands us the ip header, not the gre header */ - ip6[0] = vlib_buffer_get_current (b[0]); - gre[0] = (void *) (ip6[0] + 1); - vlib_buffer_advance (b[0], sizeof (*ip6[0]) + sizeof (*gre[0])); - } - else - { - /* ip4_local hands us the ip header, not the gre header */ - ip4[0] = vlib_buffer_get_current (b[0]); - gre[0] = (void *) (ip4[0] + 1); - vlib_buffer_advance (b[0], sizeof (*ip4[0]) + sizeof (*gre[0])); - } - - if (PREDICT_TRUE (cached_protocol == gre[0]->protocol)) - { - nidx[0] = cached_next_index; - } - else - { - cached_next_index = nidx[0] = - sparse_vec_index (gm->next_by_protocol, gre[0]->protocol); - cached_protocol = gre[0]->protocol; - } - - ni[0] = vec_elt (gm->next_by_protocol, nidx[0]); - next[0] = ni[0].next_index; - type[0] = ni[0].tunnel_type; - - b[0]->error = nidx[0] == SPARSE_VEC_INVALID_INDEX - ? node->errors[GRE_ERROR_UNKNOWN_PROTOCOL] - : node->errors[GRE_ERROR_NONE]; - - version[0] = clib_net_to_host_u16 (gre[0]->flags_and_version); - version[0] &= GRE_VERSION_MASK; - - b[0]->error = version[0] - ? node->errors[GRE_ERROR_UNSUPPORTED_VERSION] : b[0]->error; - next[0] = version[0] ? GRE_INPUT_NEXT_DROP : next[0]; - - len[0] = vlib_buffer_length_in_chain (vm, b[0]); - - if (is_ipv6) - { - gre_mk_key6 (&ip6[0]->dst_address, - &ip6[0]->src_address, - vnet_buffer (b[0])->ip.fib_index, - type[0], TUNNEL_MODE_P2P, 0, &key[0].gtk_v6); - matched[0] = gre_match_key6 (&cached_key.gtk_v6, &key[0].gtk_v6); - } - else - { - gre_mk_key4 (ip4[0]->dst_address, - ip4[0]->src_address, - vnet_buffer (b[0])->ip.fib_index, - type[0], TUNNEL_MODE_P2P, 0, &key[0].gtk_v4); - matched[0] = gre_match_key4 (&cached_key.gtk_v4, &key[0].gtk_v4); - } - - tun_sw_if_index[0] = cached_tun_sw_if_index; - if (PREDICT_FALSE (!matched[0])) - gre_tunnel_get (gm, node, b[0], &next[0], &key[0], &cached_key, - &tun_sw_if_index[0], &cached_tun_sw_if_index, - is_ipv6); - - if (PREDICT_TRUE (next[0] > GRE_INPUT_NEXT_DROP)) - { - vlib_increment_combined_counter (&gm->vnet_main-> - interface_main.combined_sw_if_counters - [VNET_INTERFACE_COUNTER_RX], - vm->thread_index, - tun_sw_if_index[0], - 1 /* packets */ , - len[0] /* bytes */ ); - vnet_buffer (b[0])->sw_if_index[VLIB_RX] = tun_sw_if_index[0]; - } - - vnet_buffer (b[0])->sw_if_index[VLIB_TX] = (u32) ~0; - - if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED)) - gre_trace (vm, node, b[0], tun_sw_if_index[0], ip6[0], ip4[0], - is_ipv6); - - b += 1; - next += 1; - n_left_from -= 1; - } - - vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors); - - vlib_node_increment_counter (vm, - is_ipv6 ? gre6_input_node.index : - gre4_input_node.index, GRE_ERROR_PKTS_DECAP, - n_left_from); - - return frame->n_vectors; -} - -VLIB_NODE_FN (gre4_input_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * from_frame) -{ - return gre_input (vm, node, from_frame, /* is_ip6 */ 0); -} - -VLIB_NODE_FN (gre6_input_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * from_frame) -{ - return gre_input (vm, node, from_frame, /* is_ip6 */ 1); -} - -static char *gre_error_strings[] = { -#define gre_error(n,s) s, -#include "error.def" -#undef gre_error -}; - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (gre4_input_node) = { - .name = "gre4-input", - /* Takes a vector of packets. */ - .vector_size = sizeof (u32), - - .n_errors = GRE_N_ERROR, - .error_strings = gre_error_strings, - - .n_next_nodes = GRE_INPUT_N_NEXT, - .next_nodes = { -#define _(s,n) [GRE_INPUT_NEXT_##s] = n, - foreach_gre_input_next -#undef _ - }, - - .format_buffer = format_gre_header_with_length, - .format_trace = format_gre_rx_trace, - .unformat_buffer = unformat_gre_header, -}; - -VLIB_REGISTER_NODE (gre6_input_node) = { - .name = "gre6-input", - /* Takes a vector of packets. */ - .vector_size = sizeof (u32), - - .runtime_data_bytes = sizeof (gre_input_runtime_t), - - .n_errors = GRE_N_ERROR, - .error_strings = gre_error_strings, - - .n_next_nodes = GRE_INPUT_N_NEXT, - .next_nodes = { -#define _(s,n) [GRE_INPUT_NEXT_##s] = n, - foreach_gre_input_next -#undef _ - }, - - .format_buffer = format_gre_header_with_length, - .format_trace = format_gre_rx_trace, - .unformat_buffer = unformat_gre_header, -}; -/* *INDENT-ON* */ - -#ifndef CLIB_MARCH_VARIANT -void -gre_register_input_protocol (vlib_main_t * vm, - gre_protocol_t protocol, u32 node_index, - gre_tunnel_type_t tunnel_type) -{ - gre_main_t *em = &gre_main; - gre_protocol_info_t *pi; - next_info_t *n; - u32 i; - - { - clib_error_t *error = vlib_call_init_function (vm, gre_input_init); - if (error) - clib_error_report (error); - } - - pi = gre_get_protocol_info (em, protocol); - pi->node_index = node_index; - pi->tunnel_type = tunnel_type; - pi->next_index = vlib_node_add_next (vm, gre4_input_node.index, node_index); - i = vlib_node_add_next (vm, gre6_input_node.index, node_index); - ASSERT (i == pi->next_index); - - /* Setup gre protocol -> next index sparse vector mapping. */ - n = sparse_vec_validate (em->next_by_protocol, - clib_host_to_net_u16 (protocol)); - n->next_index = pi->next_index; - n->tunnel_type = tunnel_type; -} - -static void -gre_setup_node (vlib_main_t * vm, u32 node_index) -{ - vlib_node_t *n = vlib_get_node (vm, node_index); - pg_node_t *pn = pg_get_node (node_index); - - n->format_buffer = format_gre_header_with_length; - n->unformat_buffer = unformat_gre_header; - pn->unformat_edit = unformat_pg_gre_header; -} - -static clib_error_t * -gre_input_init (vlib_main_t * vm) -{ - gre_main_t *gm = &gre_main; - vlib_node_t *ethernet_input, *ip4_input, *ip6_input, *mpls_unicast_input; - - { - clib_error_t *error; - error = vlib_call_init_function (vm, gre_init); - if (error) - clib_error_report (error); - } - - gre_setup_node (vm, gre4_input_node.index); - gre_setup_node (vm, gre6_input_node.index); - - gm->next_by_protocol = sparse_vec_new - ( /* elt bytes */ sizeof (gm->next_by_protocol[0]), - /* bits in index */ BITS (((gre_header_t *) 0)->protocol)); - - /* These could be moved to the supported protocol input node defn's */ - ethernet_input = vlib_get_node_by_name (vm, (u8 *) "ethernet-input"); - ASSERT (ethernet_input); - ip4_input = vlib_get_node_by_name (vm, (u8 *) "ip4-input"); - ASSERT (ip4_input); - ip6_input = vlib_get_node_by_name (vm, (u8 *) "ip6-input"); - ASSERT (ip6_input); - mpls_unicast_input = vlib_get_node_by_name (vm, (u8 *) "mpls-input"); - ASSERT (mpls_unicast_input); - - gre_register_input_protocol (vm, GRE_PROTOCOL_teb, - ethernet_input->index, GRE_TUNNEL_TYPE_TEB); - - gre_register_input_protocol (vm, GRE_PROTOCOL_ip4, - ip4_input->index, GRE_TUNNEL_TYPE_L3); - - gre_register_input_protocol (vm, GRE_PROTOCOL_ip6, - ip6_input->index, GRE_TUNNEL_TYPE_L3); - - gre_register_input_protocol (vm, GRE_PROTOCOL_mpls_unicast, - mpls_unicast_input->index, GRE_TUNNEL_TYPE_L3); - - return 0; -} - -VLIB_INIT_FUNCTION (gre_input_init); - -#endif /* CLIB_MARCH_VARIANT */ -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |