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-rw-r--r--src/vnet/gre/gre.c867
1 files changed, 0 insertions, 867 deletions
diff --git a/src/vnet/gre/gre.c b/src/vnet/gre/gre.c
deleted file mode 100644
index dc735e6a77b..00000000000
--- a/src/vnet/gre/gre.c
+++ /dev/null
@@ -1,867 +0,0 @@
-/*
- * gre.c: gre
- *
- * 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 <vnet/vnet.h>
-#include <vnet/gre/gre.h>
-#include <vnet/adj/adj_midchain.h>
-#include <vnet/tunnel/tunnel_dp.h>
-
-extern gre_main_t gre_main;
-
-#ifndef CLIB_MARCH_VARIANT
-gre_main_t gre_main;
-
-typedef struct
-{
- union
- {
- ip4_and_gre_header_t ip4_and_gre;
- u64 as_u64[3];
- };
-} ip4_and_gre_union_t;
-
-typedef struct
-{
- union
- {
- ip6_and_gre_header_t ip6_and_gre;
- u64 as_u64[3];
- };
-} ip6_and_gre_union_t;
-#endif /* CLIB_MARCH_VARIANT */
-
-
-/* Packet trace structure */
-typedef struct
-{
- /* Tunnel-id / index in tunnel vector */
- u32 tunnel_id;
-
- /* pkt length */
- u32 length;
-
- /* tunnel ip addresses */
- ip46_address_t src;
- ip46_address_t dst;
-} gre_tx_trace_t;
-
-extern u8 *format_gre_tx_trace (u8 * s, va_list * args);
-
-#ifndef CLIB_MARCH_VARIANT
-u8 *
-format_gre_tx_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_tx_trace_t *t = va_arg (*args, gre_tx_trace_t *);
-
- s = format (s, "GRE: tunnel %d len %d src %U dst %U",
- t->tunnel_id, t->length,
- format_ip46_address, &t->src, IP46_TYPE_ANY,
- format_ip46_address, &t->dst, IP46_TYPE_ANY);
- return s;
-}
-
-u8 *
-format_gre_protocol (u8 * s, va_list * args)
-{
- gre_protocol_t p = va_arg (*args, u32);
- gre_main_t *gm = &gre_main;
- gre_protocol_info_t *pi = gre_get_protocol_info (gm, p);
-
- if (pi)
- s = format (s, "%s", pi->name);
- else
- s = format (s, "0x%04x", p);
-
- return s;
-}
-
-u8 *
-format_gre_header_with_length (u8 * s, va_list * args)
-{
- gre_main_t *gm = &gre_main;
- gre_header_t *h = va_arg (*args, gre_header_t *);
- u32 max_header_bytes = va_arg (*args, u32);
- gre_protocol_t p = clib_net_to_host_u16 (h->protocol);
- u32 indent, header_bytes;
-
- header_bytes = sizeof (h[0]);
- if (max_header_bytes != 0 && header_bytes > max_header_bytes)
- return format (s, "gre header truncated");
-
- indent = format_get_indent (s);
-
- s = format (s, "GRE %U", format_gre_protocol, p);
-
- if (max_header_bytes != 0 && header_bytes < max_header_bytes)
- {
- gre_protocol_info_t *pi = gre_get_protocol_info (gm, p);
- vlib_node_t *node = vlib_get_node (gm->vlib_main, pi->node_index);
- if (node->format_buffer)
- s = format (s, "\n%U%U",
- format_white_space, indent,
- node->format_buffer, (void *) (h + 1),
- max_header_bytes - header_bytes);
- }
-
- return s;
-}
-
-u8 *
-format_gre_header (u8 * s, va_list * args)
-{
- gre_header_t *h = va_arg (*args, gre_header_t *);
- return format (s, "%U", format_gre_header_with_length, h, 0);
-}
-
-/* Returns gre protocol as an int in host byte order. */
-uword
-unformat_gre_protocol_host_byte_order (unformat_input_t * input,
- va_list * args)
-{
- u16 *result = va_arg (*args, u16 *);
- gre_main_t *gm = &gre_main;
- int i;
-
- /* Named type. */
- if (unformat_user (input, unformat_vlib_number_by_name,
- gm->protocol_info_by_name, &i))
- {
- gre_protocol_info_t *pi = vec_elt_at_index (gm->protocol_infos, i);
- *result = pi->protocol;
- return 1;
- }
-
- return 0;
-}
-
-uword
-unformat_gre_protocol_net_byte_order (unformat_input_t * input,
- va_list * args)
-{
- u16 *result = va_arg (*args, u16 *);
- if (!unformat_user (input, unformat_gre_protocol_host_byte_order, result))
- return 0;
- *result = clib_host_to_net_u16 ((u16) * result);
- return 1;
-}
-
-uword
-unformat_gre_header (unformat_input_t * input, va_list * args)
-{
- u8 **result = va_arg (*args, u8 **);
- gre_header_t _h, *h = &_h;
- u16 p;
-
- if (!unformat (input, "%U", unformat_gre_protocol_host_byte_order, &p))
- return 0;
-
- h->protocol = clib_host_to_net_u16 (p);
-
- /* Add header to result. */
- {
- void *p;
- u32 n_bytes = sizeof (h[0]);
-
- vec_add2 (*result, p, n_bytes);
- clib_memcpy (p, h, n_bytes);
- }
-
- return 1;
-}
-
-static int
-gre_proto_from_vnet_link (vnet_link_t link)
-{
- switch (link)
- {
- case VNET_LINK_IP4:
- return (GRE_PROTOCOL_ip4);
- case VNET_LINK_IP6:
- return (GRE_PROTOCOL_ip6);
- case VNET_LINK_MPLS:
- return (GRE_PROTOCOL_mpls_unicast);
- case VNET_LINK_ETHERNET:
- return (GRE_PROTOCOL_teb);
- case VNET_LINK_ARP:
- return (GRE_PROTOCOL_arp);
- case VNET_LINK_NSH:
- ASSERT (0);
- break;
- }
- ASSERT (0);
- return (GRE_PROTOCOL_ip4);
-}
-
-static u8 *
-gre_build_rewrite (vnet_main_t * vnm,
- u32 sw_if_index,
- vnet_link_t link_type, const void *dst_address)
-{
- gre_main_t *gm = &gre_main;
- const ip46_address_t *dst;
- ip4_and_gre_header_t *h4;
- ip6_and_gre_header_t *h6;
- gre_header_t *gre;
- u8 *rewrite = NULL;
- gre_tunnel_t *t;
- u32 ti;
- u8 is_ipv6;
-
- dst = dst_address;
- ti = gm->tunnel_index_by_sw_if_index[sw_if_index];
-
- if (~0 == ti)
- /* not one of ours */
- return (0);
-
- t = pool_elt_at_index (gm->tunnels, ti);
-
- is_ipv6 = t->tunnel_dst.fp_proto == FIB_PROTOCOL_IP6 ? 1 : 0;
-
- if (!is_ipv6)
- {
- vec_validate (rewrite, sizeof (*h4) - 1);
- h4 = (ip4_and_gre_header_t *) rewrite;
- gre = &h4->gre;
- h4->ip4.ip_version_and_header_length = 0x45;
- h4->ip4.ttl = 254;
- h4->ip4.protocol = IP_PROTOCOL_GRE;
- /* fixup ip4 header length and checksum after-the-fact */
- h4->ip4.src_address.as_u32 = t->tunnel_src.ip4.as_u32;
- h4->ip4.dst_address.as_u32 = dst->ip4.as_u32;
- h4->ip4.checksum = ip4_header_checksum (&h4->ip4);
- }
- else
- {
- vec_validate (rewrite, sizeof (*h6) - 1);
- h6 = (ip6_and_gre_header_t *) rewrite;
- gre = &h6->gre;
- h6->ip6.ip_version_traffic_class_and_flow_label =
- clib_host_to_net_u32 (6 << 28);
- h6->ip6.hop_limit = 255;
- h6->ip6.protocol = IP_PROTOCOL_GRE;
- /* fixup ip6 header length and checksum after-the-fact */
- h6->ip6.src_address.as_u64[0] = t->tunnel_src.ip6.as_u64[0];
- h6->ip6.src_address.as_u64[1] = t->tunnel_src.ip6.as_u64[1];
- h6->ip6.dst_address.as_u64[0] = dst->ip6.as_u64[0];
- h6->ip6.dst_address.as_u64[1] = dst->ip6.as_u64[1];
- }
-
- if (PREDICT_FALSE (t->type == GRE_TUNNEL_TYPE_ERSPAN))
- {
- gre->protocol = clib_host_to_net_u16 (GRE_PROTOCOL_erspan);
- gre->flags_and_version = clib_host_to_net_u16 (GRE_FLAGS_SEQUENCE);
- }
- else
- gre->protocol =
- clib_host_to_net_u16 (gre_proto_from_vnet_link (link_type));
-
- return (rewrite);
-}
-
-static void
-gre44_fixup (vlib_main_t * vm,
- const ip_adjacency_t * adj, vlib_buffer_t * b0, const void *data)
-{
- tunnel_encap_decap_flags_t flags;
- ip4_and_gre_header_t *ip0;
-
- ip0 = vlib_buffer_get_current (b0);
- flags = pointer_to_uword (data);
-
- /* Fixup the checksum and len fields in the GRE tunnel encap
- * that was applied at the midchain node */
- ip0->ip4.length =
- clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0));
- tunnel_encap_fixup_4o4 (flags, (ip4_header_t *) (ip0 + 1), &ip0->ip4);
- ip0->ip4.checksum = ip4_header_checksum (&ip0->ip4);
-}
-
-static void
-gre64_fixup (vlib_main_t * vm,
- const ip_adjacency_t * adj, vlib_buffer_t * b0, const void *data)
-{
- tunnel_encap_decap_flags_t flags;
- ip4_and_gre_header_t *ip0;
-
- ip0 = vlib_buffer_get_current (b0);
- flags = pointer_to_uword (data);
-
- /* Fixup the checksum and len fields in the GRE tunnel encap
- * that was applied at the midchain node */
- ip0->ip4.length =
- clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0));
- tunnel_encap_fixup_6o4 (flags, (ip6_header_t *) (ip0 + 1), &ip0->ip4);
- ip0->ip4.checksum = ip4_header_checksum (&ip0->ip4);
-}
-
-static void
-grex4_fixup (vlib_main_t * vm,
- const ip_adjacency_t * adj, vlib_buffer_t * b0, const void *data)
-{
- ip4_header_t *ip0;
-
- ip0 = vlib_buffer_get_current (b0);
-
- /* Fixup the checksum and len fields in the GRE tunnel encap
- * that was applied at the midchain node */
- ip0->length = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0));
- ip0->checksum = ip4_header_checksum (ip0);
-}
-
-static void
-gre46_fixup (vlib_main_t * vm,
- const ip_adjacency_t * adj, vlib_buffer_t * b0, const void *data)
-{
- tunnel_encap_decap_flags_t flags;
- ip6_and_gre_header_t *ip0;
-
- ip0 = vlib_buffer_get_current (b0);
- flags = pointer_to_uword (data);
-
- /* Fixup the payload length field in the GRE tunnel encap that was applied
- * at the midchain node */
- ip0->ip6.payload_length =
- clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0) -
- sizeof (ip0->ip6));
- tunnel_encap_fixup_4o6 (flags, b0, (ip4_header_t *) (ip0 + 1), &ip0->ip6);
-}
-
-static void
-gre66_fixup (vlib_main_t * vm,
- const ip_adjacency_t * adj, vlib_buffer_t * b0, const void *data)
-{
- tunnel_encap_decap_flags_t flags;
- ip6_and_gre_header_t *ip0;
-
- ip0 = vlib_buffer_get_current (b0);
- flags = pointer_to_uword (data);
-
- /* Fixup the payload length field in the GRE tunnel encap that was applied
- * at the midchain node */
- ip0->ip6.payload_length =
- clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0) -
- sizeof (ip0->ip6));
- tunnel_encap_fixup_6o6 (flags, (ip6_header_t *) (ip0 + 1), &ip0->ip6);
-}
-
-static void
-grex6_fixup (vlib_main_t * vm,
- const ip_adjacency_t * adj, vlib_buffer_t * b0, const void *data)
-{
- ip6_and_gre_header_t *ip0;
-
- ip0 = vlib_buffer_get_current (b0);
-
- /* Fixup the payload length field in the GRE tunnel encap that was applied
- * at the midchain node */
- ip0->ip6.payload_length =
- clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0) -
- sizeof (ip0->ip6));
-}
-
-/**
- * return the appropriate fixup function given the overlay (link-type) and
- * underlay (fproto) combination
- */
-static adj_midchain_fixup_t
-gre_get_fixup (fib_protocol_t fproto, vnet_link_t lt)
-{
- if (fproto == FIB_PROTOCOL_IP6 && lt == VNET_LINK_IP6)
- return (gre66_fixup);
- if (fproto == FIB_PROTOCOL_IP6 && lt == VNET_LINK_IP4)
- return (gre46_fixup);
- if (fproto == FIB_PROTOCOL_IP4 && lt == VNET_LINK_IP6)
- return (gre64_fixup);
- if (fproto == FIB_PROTOCOL_IP4 && lt == VNET_LINK_IP4)
- return (gre44_fixup);
- if (fproto == FIB_PROTOCOL_IP6)
- return (grex6_fixup);
- if (fproto == FIB_PROTOCOL_IP4)
- return (grex4_fixup);
-
- ASSERT (0);
- return (gre44_fixup);
-}
-
-void
-gre_update_adj (vnet_main_t * vnm, u32 sw_if_index, adj_index_t ai)
-{
- gre_main_t *gm = &gre_main;
- gre_tunnel_t *t;
- adj_flags_t af;
- u32 ti;
-
- ti = gm->tunnel_index_by_sw_if_index[sw_if_index];
- t = pool_elt_at_index (gm->tunnels, ti);
- af = ADJ_FLAG_NONE;
-
- /*
- * the user has not requested that the load-balancing be based on
- * a flow hash of the inner packet. so use the stacking to choose
- * a path.
- */
- if (!(t->flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_INNER_HASH))
- af |= ADJ_FLAG_MIDCHAIN_IP_STACK;
-
- adj_nbr_midchain_update_rewrite
- (ai, gre_get_fixup (t->tunnel_dst.fp_proto,
- adj_get_link_type (ai)),
- uword_to_pointer (t->flags, void *), af,
- gre_build_rewrite (vnm, sw_if_index, adj_get_link_type (ai),
- &t->tunnel_dst.fp_addr));
-
- gre_tunnel_stack (ai);
-}
-
-adj_walk_rc_t
-mgre_mk_complete_walk (adj_index_t ai, void *data)
-{
- mgre_walk_ctx_t *ctx = data;
- adj_flags_t af;
-
- af = ADJ_FLAG_NONE;
-
- /*
- * the user has not requested that the load-balancing be based on
- * a flow hash of the inner packet. so use the stacking to choose
- * a path.
- */
- if (!(ctx->t->flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_INNER_HASH))
- af |= ADJ_FLAG_MIDCHAIN_IP_STACK;
-
- adj_nbr_midchain_update_rewrite
- (ai, gre_get_fixup (ctx->t->tunnel_dst.fp_proto,
- adj_get_link_type (ai)),
- uword_to_pointer (ctx->t->flags, void *),
- af,
- gre_build_rewrite (vnet_get_main (),
- ctx->t->sw_if_index,
- adj_get_link_type (ai),
- &teib_entry_get_nh (ctx->ne)->fp_addr));
-
- teib_entry_adj_stack (ctx->ne, ai);
-
- return (ADJ_WALK_RC_CONTINUE);
-}
-
-adj_walk_rc_t
-mgre_mk_incomplete_walk (adj_index_t ai, void *data)
-{
- gre_tunnel_t *t = data;
-
- adj_nbr_midchain_update_rewrite (ai, gre_get_fixup (t->tunnel_dst.fp_proto,
- adj_get_link_type (ai)),
- NULL, ADJ_FLAG_NONE, NULL);
-
- adj_midchain_delegate_unstack (ai);
-
- return (ADJ_WALK_RC_CONTINUE);
-}
-
-void
-mgre_update_adj (vnet_main_t * vnm, u32 sw_if_index, adj_index_t ai)
-{
- gre_main_t *gm = &gre_main;
- ip_adjacency_t *adj;
- teib_entry_t *ne;
- gre_tunnel_t *t;
- u32 ti;
-
- adj = adj_get (ai);
- ti = gm->tunnel_index_by_sw_if_index[sw_if_index];
- t = pool_elt_at_index (gm->tunnels, ti);
-
- ne = teib_entry_find_46 (sw_if_index,
- adj->ia_nh_proto, &adj->sub_type.nbr.next_hop);
-
- if (NULL == ne)
- {
- // no TEIB entry to provide the next-hop
- adj_nbr_midchain_update_rewrite (
- ai, gre_get_fixup (t->tunnel_dst.fp_proto, adj_get_link_type (ai)),
- uword_to_pointer (t->flags, void *), ADJ_FLAG_NONE, NULL);
- return;
- }
-
- mgre_walk_ctx_t ctx = {
- .t = t,
- .ne = ne
- };
- adj_nbr_walk_nh (sw_if_index,
- adj->ia_nh_proto,
- &adj->sub_type.nbr.next_hop, mgre_mk_complete_walk, &ctx);
-}
-#endif /* CLIB_MARCH_VARIANT */
-
-typedef enum
-{
- GRE_ENCAP_NEXT_L2_MIDCHAIN,
- GRE_ENCAP_N_NEXT,
-} gre_encap_next_t;
-
-/**
- * @brief TX function. Only called for L2 payload including TEB or ERSPAN.
- * L3 traffic uses the adj-midchains.
- */
-static_always_inline u32
-gre_encap_inline (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame, gre_tunnel_type_t type)
-{
- gre_main_t *gm = &gre_main;
- u32 *from, n_left_from;
- vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
- u32 sw_if_index[2] = { ~0, ~0 };
- const gre_tunnel_t *gt[2] = { 0 };
- adj_index_t adj_index[2] = { ADJ_INDEX_INVALID, ADJ_INDEX_INVALID };
-
- from = vlib_frame_vector_args (frame);
- n_left_from = frame->n_vectors;
- vlib_get_buffers (vm, from, bufs, n_left_from);
-
- while (n_left_from >= 2)
- {
-
- if (PREDICT_FALSE
- (sw_if_index[0] != vnet_buffer (b[0])->sw_if_index[VLIB_TX]))
- {
- const vnet_hw_interface_t *hi;
- sw_if_index[0] = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
- hi = vnet_get_sup_hw_interface (gm->vnet_main, sw_if_index[0]);
- gt[0] = &gm->tunnels[hi->dev_instance];
- adj_index[0] = gt[0]->l2_adj_index;
- }
- if (PREDICT_FALSE
- (sw_if_index[1] != vnet_buffer (b[1])->sw_if_index[VLIB_TX]))
- {
- const vnet_hw_interface_t *hi;
- sw_if_index[1] = vnet_buffer (b[1])->sw_if_index[VLIB_TX];
- hi = vnet_get_sup_hw_interface (gm->vnet_main, sw_if_index[1]);
- gt[1] = &gm->tunnels[hi->dev_instance];
- adj_index[1] = gt[1]->l2_adj_index;
- }
-
- vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = adj_index[0];
- vnet_buffer (b[1])->ip.adj_index[VLIB_TX] = adj_index[1];
-
- if (type == GRE_TUNNEL_TYPE_ERSPAN)
- {
- /* Encap GRE seq# and ERSPAN type II header */
- erspan_t2_t *h0;
- u32 seq_num;
- u64 hdr;
- vlib_buffer_advance (b[0], -sizeof (erspan_t2_t));
- h0 = vlib_buffer_get_current (b[0]);
- seq_num = clib_atomic_fetch_add (&gt[0]->gre_sn->seq_num, 1);
- hdr = clib_host_to_net_u64 (ERSPAN_HDR2);
- h0->seq_num = clib_host_to_net_u32 (seq_num);
- h0->t2_u64 = hdr;
- h0->t2.cos_en_t_session |= clib_host_to_net_u16 (gt[0]->session_id);
- }
- if (type == GRE_TUNNEL_TYPE_ERSPAN)
- {
- /* Encap GRE seq# and ERSPAN type II header */
- erspan_t2_t *h0;
- u32 seq_num;
- u64 hdr;
- vlib_buffer_advance (b[1], -sizeof (erspan_t2_t));
- h0 = vlib_buffer_get_current (b[1]);
- seq_num = clib_atomic_fetch_add (&gt[1]->gre_sn->seq_num, 1);
- hdr = clib_host_to_net_u64 (ERSPAN_HDR2);
- h0->seq_num = clib_host_to_net_u32 (seq_num);
- h0->t2_u64 = hdr;
- h0->t2.cos_en_t_session |= clib_host_to_net_u16 (gt[1]->session_id);
- }
-
- if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
- {
- gre_tx_trace_t *tr = vlib_add_trace (vm, node,
- b[0], sizeof (*tr));
- tr->tunnel_id = gt[0] - gm->tunnels;
- tr->src = gt[0]->tunnel_src;
- tr->dst = gt[0]->tunnel_dst.fp_addr;
- tr->length = vlib_buffer_length_in_chain (vm, b[0]);
- }
- if (PREDICT_FALSE (b[1]->flags & VLIB_BUFFER_IS_TRACED))
- {
- gre_tx_trace_t *tr = vlib_add_trace (vm, node,
- b[1], sizeof (*tr));
- tr->tunnel_id = gt[1] - gm->tunnels;
- tr->src = gt[1]->tunnel_src;
- tr->dst = gt[1]->tunnel_dst.fp_addr;
- tr->length = vlib_buffer_length_in_chain (vm, b[1]);
- }
-
- b += 2;
- n_left_from -= 2;
- }
-
- while (n_left_from >= 1)
- {
-
- if (PREDICT_FALSE
- (sw_if_index[0] != vnet_buffer (b[0])->sw_if_index[VLIB_TX]))
- {
- const vnet_hw_interface_t *hi;
- sw_if_index[0] = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
- hi = vnet_get_sup_hw_interface (gm->vnet_main, sw_if_index[0]);
- gt[0] = &gm->tunnels[hi->dev_instance];
- adj_index[0] = gt[0]->l2_adj_index;
- }
-
- vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = adj_index[0];
-
- if (type == GRE_TUNNEL_TYPE_ERSPAN)
- {
- /* Encap GRE seq# and ERSPAN type II header */
- erspan_t2_t *h0;
- u32 seq_num;
- u64 hdr;
- ASSERT (gt[0]->type == GRE_TUNNEL_TYPE_ERSPAN);
- vlib_buffer_advance (b[0], -sizeof (erspan_t2_t));
- h0 = vlib_buffer_get_current (b[0]);
- seq_num = clib_atomic_fetch_add (&gt[0]->gre_sn->seq_num, 1);
- hdr = clib_host_to_net_u64 (ERSPAN_HDR2);
- h0->seq_num = clib_host_to_net_u32 (seq_num);
- h0->t2_u64 = hdr;
- h0->t2.cos_en_t_session |= clib_host_to_net_u16 (gt[0]->session_id);
- }
-
- if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
- {
- gre_tx_trace_t *tr = vlib_add_trace (vm, node,
- b[0], sizeof (*tr));
- tr->tunnel_id = gt[0] - gm->tunnels;
- tr->src = gt[0]->tunnel_src;
- tr->dst = gt[0]->tunnel_dst.fp_addr;
- tr->length = vlib_buffer_length_in_chain (vm, b[0]);
- }
-
- b += 1;
- n_left_from -= 1;
- }
-
- vlib_buffer_enqueue_to_single_next (vm, node, from,
- GRE_ENCAP_NEXT_L2_MIDCHAIN,
- frame->n_vectors);
-
- vlib_node_increment_counter (vm, node->node_index,
- GRE_ERROR_PKTS_ENCAP, frame->n_vectors);
-
- return frame->n_vectors;
-}
-
-static char *gre_error_strings[] = {
-#define gre_error(n,s) s,
-#include "error.def"
-#undef gre_error
-};
-
-VLIB_NODE_FN (gre_teb_encap_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- return (gre_encap_inline (vm, node, frame, GRE_TUNNEL_TYPE_TEB));
-}
-
-VLIB_NODE_FN (gre_erspan_encap_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- return (gre_encap_inline (vm, node, frame, GRE_TUNNEL_TYPE_ERSPAN));
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (gre_teb_encap_node) =
-{
- .name = "gre-teb-encap",
- .vector_size = sizeof (u32),
- .format_trace = format_gre_tx_trace,
- .type = VLIB_NODE_TYPE_INTERNAL,
- .n_errors = GRE_N_ERROR,
- .error_strings = gre_error_strings,
- .n_next_nodes = GRE_ENCAP_N_NEXT,
- .next_nodes = {
- [GRE_ENCAP_NEXT_L2_MIDCHAIN] = "adj-l2-midchain",
- },
-};
-VLIB_REGISTER_NODE (gre_erspan_encap_node) =
-{
- .name = "gre-erspan-encap",
- .vector_size = sizeof (u32),
- .format_trace = format_gre_tx_trace,
- .type = VLIB_NODE_TYPE_INTERNAL,
- .n_errors = GRE_N_ERROR,
- .error_strings = gre_error_strings,
- .n_next_nodes = GRE_ENCAP_N_NEXT,
- .next_nodes = {
- [GRE_ENCAP_NEXT_L2_MIDCHAIN] = "adj-l2-midchain",
- },
-};
-/* *INDENT-ON* */
-
-#ifndef CLIB_MARCH_VARIANT
-static u8 *
-format_gre_tunnel_name (u8 * s, va_list * args)
-{
- u32 dev_instance = va_arg (*args, u32);
- gre_main_t *gm = &gre_main;
- gre_tunnel_t *t;
-
- if (dev_instance >= vec_len (gm->tunnels))
- return format (s, "<improperly-referenced>");
-
- t = pool_elt_at_index (gm->tunnels, dev_instance);
- return format (s, "gre%d", t->user_instance);
-}
-
-static u8 *
-format_gre_device (u8 * s, va_list * args)
-{
- u32 dev_instance = va_arg (*args, u32);
- CLIB_UNUSED (int verbose) = va_arg (*args, int);
-
- s = format (s, "GRE tunnel: id %d\n", dev_instance);
- return s;
-}
-
-static int
-gre_tunnel_desc (u32 sw_if_index,
- ip46_address_t * src, ip46_address_t * dst, u8 * is_l2)
-{
- gre_main_t *gm = &gre_main;
- gre_tunnel_t *t;
- u32 ti;
-
- ti = gm->tunnel_index_by_sw_if_index[sw_if_index];
-
- if (~0 == ti)
- /* not one of ours */
- return -1;
-
- t = pool_elt_at_index (gm->tunnels, ti);
-
- *src = t->tunnel_src;
- *dst = t->tunnel_dst.fp_addr;
- *is_l2 = t->type == GRE_TUNNEL_TYPE_TEB;
-
- return (0);
-}
-
-/* *INDENT-OFF* */
-VNET_DEVICE_CLASS (gre_device_class) = {
- .name = "GRE tunnel device",
- .format_device_name = format_gre_tunnel_name,
- .format_device = format_gre_device,
- .format_tx_trace = format_gre_tx_trace,
- .admin_up_down_function = gre_interface_admin_up_down,
- .ip_tun_desc = gre_tunnel_desc,
-#ifdef SOON
- .clear counter = 0;
-#endif
-};
-
-VNET_HW_INTERFACE_CLASS (gre_hw_interface_class) = {
- .name = "GRE",
- .format_header = format_gre_header_with_length,
- .unformat_header = unformat_gre_header,
- .build_rewrite = gre_build_rewrite,
- .update_adjacency = gre_update_adj,
- .flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P,
-};
-
-VNET_HW_INTERFACE_CLASS (mgre_hw_interface_class) = {
- .name = "mGRE",
- .format_header = format_gre_header_with_length,
- .unformat_header = unformat_gre_header,
- .build_rewrite = gre_build_rewrite,
- .update_adjacency = mgre_update_adj,
- .flags = VNET_HW_INTERFACE_CLASS_FLAG_NBMA,
-};
-/* *INDENT-ON* */
-#endif /* CLIB_MARCH_VARIANT */
-
-static void
-add_protocol (gre_main_t * gm, gre_protocol_t protocol, char *protocol_name)
-{
- gre_protocol_info_t *pi;
- u32 i;
-
- vec_add2 (gm->protocol_infos, pi, 1);
- i = pi - gm->protocol_infos;
-
- pi->name = protocol_name;
- pi->protocol = protocol;
- pi->next_index = pi->node_index = ~0;
-
- hash_set (gm->protocol_info_by_protocol, protocol, i);
- hash_set_mem (gm->protocol_info_by_name, pi->name, i);
-}
-
-static clib_error_t *
-gre_init (vlib_main_t * vm)
-{
- gre_main_t *gm = &gre_main;
- clib_error_t *error;
- ip_main_t *im = &ip_main;
- ip_protocol_info_t *pi;
-
- clib_memset (gm, 0, sizeof (gm[0]));
- gm->vlib_main = vm;
- gm->vnet_main = vnet_get_main ();
-
- if ((error = vlib_call_init_function (vm, ip_main_init)))
- return error;
-
- if ((error = vlib_call_init_function (vm, ip4_lookup_init)))
- return error;
-
- if ((error = vlib_call_init_function (vm, ip6_lookup_init)))
- return error;
-
- /* Set up the ip packet generator */
- pi = ip_get_protocol_info (im, IP_PROTOCOL_GRE);
- pi->format_header = format_gre_header;
- pi->unformat_pg_edit = unformat_pg_gre_header;
-
- gm->protocol_info_by_name = hash_create_string (0, sizeof (uword));
- gm->protocol_info_by_protocol = hash_create (0, sizeof (uword));
- gm->tunnel_by_key4 =
- hash_create_mem (0, sizeof (gre_tunnel_key4_t), sizeof (uword));
- gm->tunnel_by_key6 =
- hash_create_mem (0, sizeof (gre_tunnel_key6_t), sizeof (uword));
- gm->seq_num_by_key =
- hash_create_mem (0, sizeof (gre_sn_key_t), sizeof (uword));
-
-#define _(n,s) add_protocol (gm, GRE_PROTOCOL_##s, #s);
- foreach_gre_protocol
-#undef _
- return vlib_call_init_function (vm, gre_input_init);
-}
-
-VLIB_INIT_FUNCTION (gre_init);
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */