diff options
Diffstat (limited to 'src/vnet/gre/gre.c')
| -rw-r--r-- | src/vnet/gre/gre.c | 867 |
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 (>[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 (>[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 (>[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: - */ |