diff options
Diffstat (limited to 'src/vnet/gre')
| -rw-r--r-- | src/vnet/gre/FEATURE.yaml | 13 | ||||
| -rw-r--r-- | src/vnet/gre/error.def | 23 | ||||
| -rw-r--r-- | src/vnet/gre/gre.api | 110 | ||||
| -rw-r--r-- | src/vnet/gre/gre.c | 867 | ||||
| -rw-r--r-- | src/vnet/gre/gre.h | 443 | ||||
| -rw-r--r-- | src/vnet/gre/gre_api.c | 220 | ||||
| -rw-r--r-- | src/vnet/gre/interface.c | 845 | ||||
| -rw-r--r-- | src/vnet/gre/node.c | 598 | ||||
| -rw-r--r-- | src/vnet/gre/pg.c | 86 |
9 files changed, 0 insertions, 3205 deletions
diff --git a/src/vnet/gre/FEATURE.yaml b/src/vnet/gre/FEATURE.yaml deleted file mode 100644 index 4b35b870dc3..00000000000 --- a/src/vnet/gre/FEATURE.yaml +++ /dev/null @@ -1,13 +0,0 @@ ---- -name: Generic Routing Encapsulation -maintainer: Neale Ranns <nranns@cisco.com> -features: - - L3 tunnels, all combinations of IPv4 and IPv6 - - Encap/Decap flags to control the copying of DSCP, ECN, DF from overlay to - underlay and vice-versa. - - L2 tunnels -missing: - - GRE keys -description: "An implementation of Generic Routing Encapsulation (GRE)" -state: production -properties: [API, CLI, MULTITHREAD] diff --git a/src/vnet/gre/error.def b/src/vnet/gre/error.def deleted file mode 100644 index 161ecc1d874..00000000000 --- a/src/vnet/gre/error.def +++ /dev/null @@ -1,23 +0,0 @@ -/* - * gre_error.def: gre errors - * - * 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. - */ - -gre_error (NONE, "no error") -gre_error (UNKNOWN_PROTOCOL, "unknown protocol") -gre_error (UNSUPPORTED_VERSION, "unsupported version") -gre_error (PKTS_DECAP, "GRE input packets decapsulated") -gre_error (PKTS_ENCAP, "GRE output packets encapsulated") -gre_error (NO_SUCH_TUNNEL, "GRE input packets dropped due to missing tunnel") diff --git a/src/vnet/gre/gre.api b/src/vnet/gre/gre.api deleted file mode 100644 index 9c69ba4007d..00000000000 --- a/src/vnet/gre/gre.api +++ /dev/null @@ -1,110 +0,0 @@ -/* Hey Emacs use -*- mode: C -*- */ -/* - * Copyright (c) 2015-2020 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. - */ - -option version = "2.1.1"; - -import "vnet/interface_types.api"; -import "vnet/tunnel/tunnel_types.api"; -import "vnet/ip/ip_types.api"; - -/** \brief A GRE tunnel type -*/ -enum gre_tunnel_type : u8 -{ - GRE_API_TUNNEL_TYPE_L3 = 0, - /* L2 Transparent Ethernet Bridge */ - GRE_API_TUNNEL_TYPE_TEB, - /* Encapsulated Remote Switched Port ANalyzer */ - GRE_API_TUNNEL_TYPE_ERSPAN, -}; - -/** \brief A composite type uniquely defining a GRE tunnel. - @param type - tunnel type (see enum definition), 0: L3, 1: TEB, 2: ERSPAN - @param mode - P2P or P2MP - @param flags - to control encap/decap behaviour - @param session_id - session for ERSPAN tunnel, range 0-1023 - @param instance - optional unique custom device instance, else ~0. - @param outer_table_id - Encap FIB table ID - @param sw_if_index - ignored on create/delete, present in details. - @param src - Source IP address - @param dst - Destination IP address, can be multicast -*/ -typedef gre_tunnel -{ - vl_api_gre_tunnel_type_t type; - vl_api_tunnel_mode_t mode; - vl_api_tunnel_encap_decap_flags_t flags; - u16 session_id; - u32 instance; - u32 outer_table_id; - vl_api_interface_index_t sw_if_index; - vl_api_address_t src; - vl_api_address_t dst; -}; - -/** \brief Add or delete a single GRE tunnel. - @param client_index - opaque cookie to identify the sender. - @param context - sender context, to match reply w/ request. - @param is_add - add if true, delete if false. - @param tunnel - tunnel definition to add or delete. -*/ -define gre_tunnel_add_del -{ - u32 client_index; - u32 context; - bool is_add; - vl_api_gre_tunnel_t tunnel; -}; - -/** \brief Add or delete a single GRE tunnel. - @param context - sender context, to match reply w/ request. - @param retval - return code for the request. - @param sw_if_index - the interface corresponding to the affected tunnel. -*/ -define gre_tunnel_add_del_reply -{ - u32 context; - i32 retval; - vl_api_interface_index_t sw_if_index; -}; - -/** \brief Dump details of all or just a single GRE tunnel. - @param client_index - opaque cookie to identify the sender. - @param context - sender context, to match reply w/ request. - @param sw_if_index - filter for tunnel of this interface index, ~0 for all. -*/ -define gre_tunnel_dump -{ - u32 client_index; - u32 context; - vl_api_interface_index_t sw_if_index; -}; - -/** \brief Details response for one of the requested GRE tunnels. - @param context - sender context, to match reply w/ request. - @param tunnel - definition of the dumped tunnel. -*/ -define gre_tunnel_details -{ - u32 context; - vl_api_gre_tunnel_t tunnel; -}; - -/* - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ 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: - */ diff --git a/src/vnet/gre/gre.h b/src/vnet/gre/gre.h deleted file mode 100644 index ea085bf0fa1..00000000000 --- a/src/vnet/gre/gre.h +++ /dev/null @@ -1,443 +0,0 @@ -/* - * gre.h: types/functions for 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. - */ - -#ifndef included_gre_h -#define included_gre_h - -#include <vnet/vnet.h> -#include <vnet/gre/packet.h> -#include <vnet/ip/ip.h> -#include <vnet/ip/format.h> -#include <vnet/adj/adj_types.h> -#include <vnet/tunnel/tunnel.h> -#include <vnet/teib/teib.h> - -extern vnet_hw_interface_class_t gre_hw_interface_class; -extern vnet_hw_interface_class_t mgre_hw_interface_class; - -typedef enum -{ -#define gre_error(n,s) GRE_ERROR_##n, -#include <vnet/gre/error.def> -#undef gre_error - GRE_N_ERROR, -} gre_error_t; - -/** - * L3: GRE (i.e. this tunnel is in L3 mode) - * TEB: Transparent Ethernet Bridging - the tunnel is in L2 mode - * ERSPAN: type 2 - the tunnel is for port mirror SPAN output. Each tunnel is - * associated with a session ID and expected to be used for encap - * and output of mirrored packet from a L2 network only. There is - * no support for receiving ERSPAN packets from a GRE ERSPAN tunnel - */ -#define foreach_gre_tunnel_type \ - _(L3, "L3") \ - _(TEB, "TEB") \ - _(ERSPAN, "ERSPAN") \ - -/** - * @brief The GRE tunnel type - */ -typedef enum gre_tunnel_type_t_ -{ -#define _(n, s) GRE_TUNNEL_TYPE_##n, - foreach_gre_tunnel_type -#undef _ -} __clib_packed gre_tunnel_type_t; - -extern u8 *format_gre_tunnel_type (u8 * s, va_list * args); - - -/** - * A GRE payload protocol registration - */ -typedef struct -{ - /** Name (a c string). */ - char *name; - - /** GRE protocol type in host byte order. */ - gre_protocol_t protocol; - - /** GRE tunnel type */ - gre_tunnel_type_t tunnel_type; - - /** Node which handles this type. */ - u32 node_index; - - /** Next index for this type. */ - u32 next_index; -} gre_protocol_info_t; - -/** - * Elements of the GRE key that are common for v6 and v6 addresses - */ -typedef struct gre_tunnel_key_common_t_ -{ - union - { - struct - { - u32 fib_index; - u16 session_id; - gre_tunnel_type_t type; - tunnel_mode_t mode; - }; - u64 as_u64; - }; -} gre_tunnel_key_common_t; - -STATIC_ASSERT_SIZEOF (gre_tunnel_key_common_t, sizeof (u64)); - -/** - * @brief Key for a IPv4 GRE Tunnel - */ -typedef struct gre_tunnel_key4_t_ -{ - /** - * Source and destination IP addresses - */ - union - { - struct - { - ip4_address_t gtk_src; - ip4_address_t gtk_dst; - }; - u64 gtk_as_u64; - }; - - /** address independent attributes */ - gre_tunnel_key_common_t gtk_common; -} __attribute__ ((packed)) gre_tunnel_key4_t; - -STATIC_ASSERT_SIZEOF (gre_tunnel_key4_t, 2 * sizeof (u64)); - -/** - * @brief Key for a IPv6 GRE Tunnel - * We use a different type so that the V4 key hash is as small as possible - */ -typedef struct gre_tunnel_key6_t_ -{ - /** - * Source and destination IP addresses - */ - ip6_address_t gtk_src; - ip6_address_t gtk_dst; - - /** address independent attributes */ - gre_tunnel_key_common_t gtk_common; -} __attribute__ ((packed)) gre_tunnel_key6_t; - -STATIC_ASSERT_SIZEOF (gre_tunnel_key6_t, 5 * sizeof (u64)); - -/** - * Union of the two possible key types - */ -typedef union gre_tunnel_key_t_ -{ - gre_tunnel_key4_t gtk_v4; - gre_tunnel_key6_t gtk_v6; -} gre_tunnel_key_t; - -/** - * The session ID is only a 10 bit value - */ -#define GTK_SESSION_ID_MAX (0x3ff) - -/** - * Used for GRE header seq number generation for ERSPAN encap - */ -typedef struct -{ - u32 seq_num; - u32 ref_count; -} gre_sn_t; - -/** - * Hash key for GRE header seq number generation for ERSPAN encap - */ -typedef struct -{ - ip46_address_t src; - ip46_address_t dst; - u32 fib_index; -} gre_sn_key_t; - -/** - * @brief A representation of a GRE tunnel - */ -typedef struct -{ - /** - * Required for pool_get_aligned - */ - CLIB_CACHE_LINE_ALIGN_MARK (cacheline0); - - /** - * The tunnel's source/local address - */ - ip46_address_t tunnel_src; - /** - * The tunnel's destination/remote address - */ - fib_prefix_t tunnel_dst; - /** - * The FIB in which the src.dst address are present - */ - u32 outer_fib_index; - u32 hw_if_index; - u32 sw_if_index; - gre_tunnel_type_t type; - tunnel_mode_t mode; - tunnel_encap_decap_flags_t flags; - - /** - * an L2 tunnel always rquires an L2 midchain. cache here for DP. - */ - adj_index_t l2_adj_index; - - /** - * ERSPAN type 2 session ID, least significant 10 bits of u16 - */ - u16 session_id; - - /** - * GRE header sequence number (SN) used for ERSPAN type 2 header, must be - * bumped automically to be thread safe. As multiple GRE tunnels are created - * for the same fib-idx/DIP/SIP with different ERSPAN session number, they all - * share the same SN which is kept per FIB/DIP/SIP, as specified by RFC2890. - */ - gre_sn_t *gre_sn; - - - u32 dev_instance; /* Real device instance in tunnel vector */ - u32 user_instance; /* Instance name being shown to user */ -} gre_tunnel_t; - -typedef struct -{ - u8 next_index; - u8 tunnel_type; -} next_info_t; - -/** - * @brief GRE related global data - */ -typedef struct -{ - /** - * pool of tunnel instances - */ - gre_tunnel_t *tunnels; - - /** - * GRE payload protocol registrations - */ - gre_protocol_info_t *protocol_infos; - - /** - * Hash tables mapping name/protocol to protocol info index. - */ - uword *protocol_info_by_name, *protocol_info_by_protocol; - - /** - * Hash mapping to tunnels with ipv4 src/dst addr - */ - uword *tunnel_by_key4; - - /** - * Hash mapping to tunnels with ipv6 src/dst addr - */ - uword *tunnel_by_key6; - - /** - * Hash mapping tunnel src/dst addr and fib-idx to sequence number - */ - uword *seq_num_by_key; - - /** - * Mapping from sw_if_index to tunnel index - */ - u32 *tunnel_index_by_sw_if_index; - - /* Sparse vector mapping gre protocol in network byte order - to next index. */ - next_info_t *next_by_protocol; - - /* convenience */ - vlib_main_t *vlib_main; - vnet_main_t *vnet_main; - - /* Record used instances */ - uword *instance_used; - - u16 msg_id_base; -} gre_main_t; - -/** - * @brief IPv4 and GRE header. - */ -/* *INDENT-OFF* */ -typedef CLIB_PACKED (struct { - ip4_header_t ip4; - gre_header_t gre; -}) ip4_and_gre_header_t; -/* *INDENT-ON* */ - -/** - * @brief IPv6 and GRE header. - */ -/* *INDENT-OFF* */ -typedef CLIB_PACKED (struct { - ip6_header_t ip6; - gre_header_t gre; -}) ip6_and_gre_header_t; -/* *INDENT-ON* */ - -always_inline gre_protocol_info_t * -gre_get_protocol_info (gre_main_t * em, gre_protocol_t protocol) -{ - uword *p = hash_get (em->protocol_info_by_protocol, protocol); - return p ? vec_elt_at_index (em->protocol_infos, p[0]) : 0; -} - -extern gre_main_t gre_main; - -extern clib_error_t *gre_interface_admin_up_down (vnet_main_t * vnm, - u32 hw_if_index, u32 flags); - -extern void gre_tunnel_stack (adj_index_t ai); -extern void gre_update_adj (vnet_main_t * vnm, - u32 sw_if_index, adj_index_t ai); - -typedef struct mgre_walk_ctx_t_ -{ - const gre_tunnel_t *t; - const teib_entry_t *ne; -} mgre_walk_ctx_t; - -adj_walk_rc_t mgre_mk_complete_walk (adj_index_t ai, void *data); -adj_walk_rc_t mgre_mk_incomplete_walk (adj_index_t ai, void *data); - -format_function_t format_gre_protocol; -format_function_t format_gre_header; -format_function_t format_gre_header_with_length; - -extern vlib_node_registration_t gre4_input_node; -extern vlib_node_registration_t gre6_input_node; -extern vlib_node_registration_t gre_erspan_encap_node; -extern vlib_node_registration_t gre_teb_encap_node; -extern vnet_device_class_t gre_device_class; - -/* Parse gre protocol as 0xXXXX or protocol name. - In either host or network byte order. */ -unformat_function_t unformat_gre_protocol_host_byte_order; -unformat_function_t unformat_gre_protocol_net_byte_order; - -/* Parse gre header. */ -unformat_function_t unformat_gre_header; -unformat_function_t unformat_pg_gre_header; - -void -gre_register_input_protocol (vlib_main_t * vm, gre_protocol_t protocol, - u32 node_index, gre_tunnel_type_t tunnel_type); - -/* manually added to the interface output node in gre.c */ -#define GRE_OUTPUT_NEXT_LOOKUP 1 - -typedef struct -{ - u8 is_add; - gre_tunnel_type_t type; - tunnel_mode_t mode; - u8 is_ipv6; - u32 instance; - ip46_address_t src, dst; - u32 outer_table_id; - u16 session_id; - tunnel_encap_decap_flags_t flags; -} vnet_gre_tunnel_add_del_args_t; - -extern int vnet_gre_tunnel_add_del (vnet_gre_tunnel_add_del_args_t * a, - u32 * sw_if_indexp); - -static inline void -gre_mk_key4 (ip4_address_t src, - ip4_address_t dst, - u32 fib_index, - gre_tunnel_type_t ttype, - tunnel_mode_t tmode, u16 session_id, gre_tunnel_key4_t * key) -{ - key->gtk_src = src; - key->gtk_dst = dst; - key->gtk_common.type = ttype; - key->gtk_common.mode = tmode; - key->gtk_common.fib_index = fib_index; - key->gtk_common.session_id = session_id; -} - -static inline int -gre_match_key4 (const gre_tunnel_key4_t * key1, - const gre_tunnel_key4_t * key2) -{ - return ((key1->gtk_as_u64 == key2->gtk_as_u64) && - (key1->gtk_common.as_u64 == key2->gtk_common.as_u64)); -} - -static inline void -gre_mk_key6 (const ip6_address_t * src, - const ip6_address_t * dst, - u32 fib_index, - gre_tunnel_type_t ttype, - tunnel_mode_t tmode, u16 session_id, gre_tunnel_key6_t * key) -{ - key->gtk_src = *src; - key->gtk_dst = *dst; - key->gtk_common.type = ttype; - key->gtk_common.mode = tmode; - key->gtk_common.fib_index = fib_index; - key->gtk_common.session_id = session_id; -} - -static inline int -gre_match_key6 (const gre_tunnel_key6_t * key1, - const gre_tunnel_key6_t * key2) -{ - return (ip6_address_is_equal (&key1->gtk_src, &key2->gtk_src) && - ip6_address_is_equal (&key1->gtk_dst, &key2->gtk_dst) && - (key1->gtk_common.as_u64 == key2->gtk_common.as_u64)); -} - -static inline void -gre_mk_sn_key (const gre_tunnel_t * gt, gre_sn_key_t * key) -{ - key->src = gt->tunnel_src; - key->dst = gt->tunnel_dst.fp_addr; - key->fib_index = gt->outer_fib_index; -} - -#endif /* included_gre_h */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ diff --git a/src/vnet/gre/gre_api.c b/src/vnet/gre/gre_api.c deleted file mode 100644 index 59a1d3d738d..00000000000 --- a/src/vnet/gre/gre_api.c +++ /dev/null @@ -1,220 +0,0 @@ -/* - *------------------------------------------------------------------ - * gre_api.c - gre api - * - * 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/vnet.h> -#include <vlibmemory/api.h> - -#include <vnet/interface.h> -#include <vnet/api_errno.h> - -#include <vnet/gre/gre.h> -#include <vnet/fib/fib_table.h> -#include <vnet/tunnel/tunnel_types_api.h> -#include <vnet/ip/ip_types_api.h> - -#include <vnet/gre/gre.api_enum.h> -#include <vnet/gre/gre.api_types.h> - -#define REPLY_MSG_ID_BASE gre_main.msg_id_base -#include <vlibapi/api_helper_macros.h> - -static int -gre_tunnel_type_decode (vl_api_gre_tunnel_type_t in, gre_tunnel_type_t * out) -{ - switch (in) - { -#define _(n, v) \ - case GRE_API_TUNNEL_TYPE_##n: \ - *out = GRE_TUNNEL_TYPE_##n; \ - return (0); - foreach_gre_tunnel_type -#undef _ - } - - return (VNET_API_ERROR_INVALID_VALUE); -} - -static vl_api_gre_tunnel_type_t -gre_tunnel_type_encode (gre_tunnel_type_t in) -{ - vl_api_gre_tunnel_type_t out = GRE_API_TUNNEL_TYPE_L3; - - switch (in) - { -#define _(n, v) \ - case GRE_TUNNEL_TYPE_##n: \ - out = GRE_API_TUNNEL_TYPE_##n; \ - break; - foreach_gre_tunnel_type -#undef _ - } - - return (out); -} - -static void vl_api_gre_tunnel_add_del_t_handler - (vl_api_gre_tunnel_add_del_t * mp) -{ - vnet_gre_tunnel_add_del_args_t _a = { }, *a = &_a; - vl_api_gre_tunnel_add_del_reply_t *rmp; - tunnel_encap_decap_flags_t flags; - u32 sw_if_index = ~0; - ip46_type_t itype[2]; - int rv = 0; - - itype[0] = ip_address_decode (&mp->tunnel.src, &a->src); - itype[1] = ip_address_decode (&mp->tunnel.dst, &a->dst); - - if (itype[0] != itype[1]) - { - rv = VNET_API_ERROR_INVALID_PROTOCOL; - goto out; - } - - if (ip46_address_is_equal (&a->src, &a->dst)) - { - rv = VNET_API_ERROR_SAME_SRC_DST; - goto out; - } - - rv = gre_tunnel_type_decode (mp->tunnel.type, &a->type); - - if (rv) - goto out; - - rv = tunnel_mode_decode (mp->tunnel.mode, &a->mode); - - if (rv) - goto out; - - rv = tunnel_encap_decap_flags_decode (mp->tunnel.flags, &flags); - - if (rv) - goto out; - - a->is_add = mp->is_add; - a->is_ipv6 = (itype[0] == IP46_TYPE_IP6); - a->instance = ntohl (mp->tunnel.instance); - a->session_id = ntohs (mp->tunnel.session_id); - a->outer_table_id = ntohl (mp->tunnel.outer_table_id); - a->flags = flags; - - rv = vnet_gre_tunnel_add_del (a, &sw_if_index); - -out: - /* *INDENT-OFF* */ - REPLY_MACRO2(VL_API_GRE_TUNNEL_ADD_DEL_REPLY, - ({ - rmp->sw_if_index = ntohl (sw_if_index); - })); - /* *INDENT-ON* */ -} - -static void send_gre_tunnel_details - (gre_tunnel_t * t, vl_api_gre_tunnel_dump_t * mp) -{ - vl_api_gre_tunnel_details_t *rmp; - - /* *INDENT-OFF* */ - REPLY_MACRO_DETAILS2(VL_API_GRE_TUNNEL_DETAILS, - ({ - ip_address_encode (&t->tunnel_src, IP46_TYPE_ANY, &rmp->tunnel.src); - ip_address_encode (&t->tunnel_dst.fp_addr, IP46_TYPE_ANY, &rmp->tunnel.dst); - - rmp->tunnel.outer_table_id = - htonl (fib_table_get_table_id - (t->outer_fib_index, t->tunnel_dst.fp_proto)); - - rmp->tunnel.type = gre_tunnel_type_encode (t->type); - rmp->tunnel.mode = tunnel_mode_encode (t->mode); - rmp->tunnel.flags = tunnel_encap_decap_flags_encode (t->flags); - rmp->tunnel.instance = htonl (t->user_instance); - rmp->tunnel.sw_if_index = htonl (t->sw_if_index); - rmp->tunnel.session_id = htons (t->session_id); - })); - /* *INDENT-ON* */ -} - -static void -vl_api_gre_tunnel_dump_t_handler (vl_api_gre_tunnel_dump_t * mp) -{ - vl_api_registration_t *reg; - gre_main_t *gm = &gre_main; - gre_tunnel_t *t; - u32 sw_if_index; - - reg = vl_api_client_index_to_registration (mp->client_index); - if (!reg) - return; - - sw_if_index = ntohl (mp->sw_if_index); - - if (~0 == sw_if_index) - { - /* *INDENT-OFF* */ - pool_foreach (t, gm->tunnels) - { - send_gre_tunnel_details(t, mp); - } - /* *INDENT-ON* */ - } - - else - { - if ((sw_if_index >= vec_len (gm->tunnel_index_by_sw_if_index)) || - (~0 == gm->tunnel_index_by_sw_if_index[sw_if_index])) - { - return; - } - t = &gm->tunnels[gm->tunnel_index_by_sw_if_index[sw_if_index]]; - send_gre_tunnel_details (t, mp); - } -} - -/* - * gre_api_hookup - * Add vpe's API message handlers to the table. - * vlib has already mapped shared memory and - * added the client registration handlers. - * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process() - */ -/* API definitions */ -#include <vnet/format_fns.h> -#include <vnet/gre/gre.api.c> - -static clib_error_t * -gre_api_hookup (vlib_main_t * vm) -{ - /* - * Set up the (msg_name, crc, message-id) table - */ - gre_main.msg_id_base = setup_message_id_table (); - - return 0; -} - -VLIB_API_INIT_FUNCTION (gre_api_hookup); - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ diff --git a/src/vnet/gre/interface.c b/src/vnet/gre/interface.c deleted file mode 100644 index bb0be865664..00000000000 --- a/src/vnet/gre/interface.c +++ /dev/null @@ -1,845 +0,0 @@ -/* - * gre_interface.c: gre interfaces - * - * 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/ip/format.h> -#include <vnet/fib/fib_table.h> -#include <vnet/adj/adj_midchain.h> -#include <vnet/adj/adj_nbr.h> -#include <vnet/mpls/mpls.h> -#include <vnet/l2/l2_input.h> -#include <vnet/teib/teib.h> - -u8 * -format_gre_tunnel_type (u8 * s, va_list * args) -{ - gre_tunnel_type_t type = va_arg (*args, int); - - switch (type) - { -#define _(n, v) case GRE_TUNNEL_TYPE_##n: \ - s = format (s, "%s", v); \ - break; - foreach_gre_tunnel_type -#undef _ - } - - return (s); -} - -static u8 * -format_gre_tunnel (u8 * s, va_list * args) -{ - gre_tunnel_t *t = va_arg (*args, gre_tunnel_t *); - - s = format (s, "[%d] instance %d src %U dst %U fib-idx %d sw-if-idx %d ", - t->dev_instance, t->user_instance, - format_ip46_address, &t->tunnel_src, IP46_TYPE_ANY, - format_ip46_address, &t->tunnel_dst.fp_addr, IP46_TYPE_ANY, - t->outer_fib_index, t->sw_if_index); - - s = format (s, "payload %U ", format_gre_tunnel_type, t->type); - s = format (s, "%U ", format_tunnel_mode, t->mode); - - if (t->type == GRE_TUNNEL_TYPE_ERSPAN) - s = format (s, "session %d ", t->session_id); - - if (t->type != GRE_TUNNEL_TYPE_L3) - s = format (s, "l2-adj-idx %d ", t->l2_adj_index); - - return s; -} - -static gre_tunnel_t * -gre_tunnel_db_find (const vnet_gre_tunnel_add_del_args_t * a, - u32 outer_fib_index, gre_tunnel_key_t * key) -{ - gre_main_t *gm = &gre_main; - uword *p; - - if (!a->is_ipv6) - { - gre_mk_key4 (a->src.ip4, a->dst.ip4, outer_fib_index, - a->type, a->mode, a->session_id, &key->gtk_v4); - p = hash_get_mem (gm->tunnel_by_key4, &key->gtk_v4); - } - else - { - gre_mk_key6 (&a->src.ip6, &a->dst.ip6, outer_fib_index, - a->type, a->mode, a->session_id, &key->gtk_v6); - p = hash_get_mem (gm->tunnel_by_key6, &key->gtk_v6); - } - - if (NULL == p) - return (NULL); - - return (pool_elt_at_index (gm->tunnels, p[0])); -} - -static void -gre_tunnel_db_add (gre_tunnel_t * t, gre_tunnel_key_t * key) -{ - gre_main_t *gm = &gre_main; - - if (t->tunnel_dst.fp_proto == FIB_PROTOCOL_IP6) - { - hash_set_mem_alloc (&gm->tunnel_by_key6, &key->gtk_v6, t->dev_instance); - } - else - { - hash_set_mem_alloc (&gm->tunnel_by_key4, &key->gtk_v4, t->dev_instance); - } -} - -static void -gre_tunnel_db_remove (gre_tunnel_t * t, gre_tunnel_key_t * key) -{ - gre_main_t *gm = &gre_main; - - if (t->tunnel_dst.fp_proto == FIB_PROTOCOL_IP6) - { - hash_unset_mem_free (&gm->tunnel_by_key6, &key->gtk_v6); - } - else - { - hash_unset_mem_free (&gm->tunnel_by_key4, &key->gtk_v4); - } -} - -/** - * gre_tunnel_stack - * - * 'stack' (resolve the recursion for) the tunnel's midchain adjacency - */ -void -gre_tunnel_stack (adj_index_t ai) -{ - gre_main_t *gm = &gre_main; - ip_adjacency_t *adj; - gre_tunnel_t *gt; - u32 sw_if_index; - - adj = adj_get (ai); - sw_if_index = adj->rewrite_header.sw_if_index; - - if ((vec_len (gm->tunnel_index_by_sw_if_index) <= sw_if_index) || - (~0 == gm->tunnel_index_by_sw_if_index[sw_if_index])) - return; - - gt = pool_elt_at_index (gm->tunnels, - gm->tunnel_index_by_sw_if_index[sw_if_index]); - - if ((vnet_hw_interface_get_flags (vnet_get_main (), gt->hw_if_index) & - VNET_HW_INTERFACE_FLAG_LINK_UP) == 0) - { - adj_midchain_delegate_unstack (ai); - } - else - { - adj_midchain_delegate_stack (ai, gt->outer_fib_index, >->tunnel_dst); - } -} - -/** - * mgre_tunnel_stack - * - * 'stack' (resolve the recursion for) the tunnel's midchain adjacency - */ -static void -mgre_tunnel_stack (adj_index_t ai) -{ - gre_main_t *gm = &gre_main; - const ip_adjacency_t *adj; - const gre_tunnel_t *gt; - u32 sw_if_index; - - adj = adj_get (ai); - sw_if_index = adj->rewrite_header.sw_if_index; - - if ((vec_len (gm->tunnel_index_by_sw_if_index) <= sw_if_index) || - (~0 == gm->tunnel_index_by_sw_if_index[sw_if_index])) - return; - - gt = pool_elt_at_index (gm->tunnels, - gm->tunnel_index_by_sw_if_index[sw_if_index]); - - if ((vnet_hw_interface_get_flags (vnet_get_main (), gt->hw_if_index) & - VNET_HW_INTERFACE_FLAG_LINK_UP) == 0) - { - adj_midchain_delegate_unstack (ai); - } - else - { - const teib_entry_t *ne; - - ne = teib_entry_find_46 (sw_if_index, adj->ia_nh_proto, - &adj->sub_type.nbr.next_hop); - if (NULL != ne) - teib_entry_adj_stack (ne, ai); - } -} - -/** - * @brief Call back when restacking all adjacencies on a GRE interface - */ -static adj_walk_rc_t -gre_adj_walk_cb (adj_index_t ai, void *ctx) -{ - gre_tunnel_stack (ai); - - return (ADJ_WALK_RC_CONTINUE); -} -static adj_walk_rc_t -mgre_adj_walk_cb (adj_index_t ai, void *ctx) -{ - mgre_tunnel_stack (ai); - - return (ADJ_WALK_RC_CONTINUE); -} - -static void -gre_tunnel_restack (gre_tunnel_t * gt) -{ - fib_protocol_t proto; - - /* - * walk all the adjacencies on th GRE interface and restack them - */ - FOR_EACH_FIB_IP_PROTOCOL (proto) - { - switch (gt->mode) - { - case TUNNEL_MODE_P2P: - adj_nbr_walk (gt->sw_if_index, proto, gre_adj_walk_cb, NULL); - break; - case TUNNEL_MODE_MP: - adj_nbr_walk (gt->sw_if_index, proto, mgre_adj_walk_cb, NULL); - break; - } - } -} - -static void -gre_teib_mk_key (const gre_tunnel_t * t, - const teib_entry_t * ne, gre_tunnel_key_t * key) -{ - const fib_prefix_t *nh; - - nh = teib_entry_get_nh (ne); - - /* construct the key using mode P2P so it can be found in the DP */ - if (FIB_PROTOCOL_IP4 == nh->fp_proto) - gre_mk_key4 (t->tunnel_src.ip4, - nh->fp_addr.ip4, - teib_entry_get_fib_index (ne), - t->type, TUNNEL_MODE_P2P, 0, &key->gtk_v4); - else - gre_mk_key6 (&t->tunnel_src.ip6, - &nh->fp_addr.ip6, - teib_entry_get_fib_index (ne), - t->type, TUNNEL_MODE_P2P, 0, &key->gtk_v6); -} - -/** - * An TEIB entry has been added - */ -static void -gre_teib_entry_added (const teib_entry_t * ne) -{ - gre_main_t *gm = &gre_main; - const ip_address_t *nh; - gre_tunnel_key_t key; - gre_tunnel_t *t; - u32 sw_if_index; - u32 t_idx; - - sw_if_index = teib_entry_get_sw_if_index (ne); - if (vec_len (gm->tunnel_index_by_sw_if_index) < sw_if_index) - return; - - t_idx = gm->tunnel_index_by_sw_if_index[sw_if_index]; - - if (INDEX_INVALID == t_idx) - return; - - /* entry has been added on an interface for which there is a GRE tunnel */ - t = pool_elt_at_index (gm->tunnels, t_idx); - - if (t->mode != TUNNEL_MODE_MP) - return; - - /* the next-hop (underlay) of the NHRP entry will form part of the key for - * ingress lookup to match packets to this interface */ - gre_teib_mk_key (t, ne, &key); - gre_tunnel_db_add (t, &key); - - /* update the rewrites for each of the adjacencies for this peer (overlay) - * using the next-hop (underlay) */ - mgre_walk_ctx_t ctx = { - .t = t, - .ne = ne - }; - nh = teib_entry_get_peer (ne); - adj_nbr_walk_nh (teib_entry_get_sw_if_index (ne), - (AF_IP4 == ip_addr_version (nh) ? - FIB_PROTOCOL_IP4 : - FIB_PROTOCOL_IP6), - &ip_addr_46 (nh), mgre_mk_complete_walk, &ctx); -} - -static void -gre_teib_entry_deleted (const teib_entry_t * ne) -{ - gre_main_t *gm = &gre_main; - const ip_address_t *nh; - gre_tunnel_key_t key; - gre_tunnel_t *t; - u32 sw_if_index; - u32 t_idx; - - sw_if_index = teib_entry_get_sw_if_index (ne); - if (vec_len (gm->tunnel_index_by_sw_if_index) < sw_if_index) - return; - - t_idx = gm->tunnel_index_by_sw_if_index[sw_if_index]; - - if (INDEX_INVALID == t_idx) - return; - - t = pool_elt_at_index (gm->tunnels, t_idx); - - /* remove the next-hop as an ingress lookup key */ - gre_teib_mk_key (t, ne, &key); - gre_tunnel_db_remove (t, &key); - - nh = teib_entry_get_peer (ne); - - /* make all the adjacencies incomplete */ - adj_nbr_walk_nh (teib_entry_get_sw_if_index (ne), - (AF_IP4 == ip_addr_version (nh) ? - FIB_PROTOCOL_IP4 : - FIB_PROTOCOL_IP6), - &ip_addr_46 (nh), mgre_mk_incomplete_walk, t); -} - -static walk_rc_t -gre_tunnel_delete_teib_walk (index_t nei, void *ctx) -{ - gre_tunnel_t *t = ctx; - gre_tunnel_key_t key; - - gre_teib_mk_key (t, teib_entry_get (nei), &key); - gre_tunnel_db_remove (t, &key); - - return (WALK_CONTINUE); -} - -static walk_rc_t -gre_tunnel_add_teib_walk (index_t nei, void *ctx) -{ - gre_tunnel_t *t = ctx; - gre_tunnel_key_t key = {}; - - gre_teib_mk_key (t, teib_entry_get (nei), &key); - gre_tunnel_db_add (t, &key); - - return (WALK_CONTINUE); -} - -static int -vnet_gre_tunnel_add (vnet_gre_tunnel_add_del_args_t * a, - u32 outer_fib_index, u32 * sw_if_indexp) -{ - gre_main_t *gm = &gre_main; - vnet_main_t *vnm = gm->vnet_main; - gre_tunnel_t *t; - vnet_hw_interface_t *hi; - u32 hw_if_index, sw_if_index; - u8 is_ipv6 = a->is_ipv6; - gre_tunnel_key_t key; - - t = gre_tunnel_db_find (a, outer_fib_index, &key); - if (NULL != t) - return VNET_API_ERROR_IF_ALREADY_EXISTS; - - pool_get_aligned (gm->tunnels, t, CLIB_CACHE_LINE_BYTES); - clib_memset (t, 0, sizeof (*t)); - - /* Reconcile the real dev_instance and a possible requested instance */ - u32 t_idx = t - gm->tunnels; /* tunnel index (or instance) */ - u32 u_idx = a->instance; /* user specified instance */ - if (u_idx == ~0) - u_idx = t_idx; - if (hash_get (gm->instance_used, u_idx)) - { - pool_put (gm->tunnels, t); - return VNET_API_ERROR_INSTANCE_IN_USE; - } - hash_set (gm->instance_used, u_idx, 1); - - t->dev_instance = t_idx; /* actual */ - t->user_instance = u_idx; /* name */ - - t->type = a->type; - t->mode = a->mode; - t->flags = a->flags; - if (t->type == GRE_TUNNEL_TYPE_ERSPAN) - t->session_id = a->session_id; - - if (t->type == GRE_TUNNEL_TYPE_L3) - { - if (t->mode == TUNNEL_MODE_P2P) - hw_if_index = - vnet_register_interface (vnm, gre_device_class.index, t_idx, - gre_hw_interface_class.index, t_idx); - else - hw_if_index = - vnet_register_interface (vnm, gre_device_class.index, t_idx, - mgre_hw_interface_class.index, t_idx); - } - else - { - vnet_eth_interface_registration_t eir = {}; - - /* Default MAC address (d00b:eed0:0000 + sw_if_index) */ - u8 address[6] = - { 0xd0, 0x0b, 0xee, 0xd0, (u8) (t_idx >> 8), (u8) t_idx }; - - eir.dev_class_index = gre_device_class.index; - eir.dev_instance = t_idx; - eir.address = address; - hw_if_index = vnet_eth_register_interface (vnm, &eir); - } - - /* Set GRE tunnel interface output node (not used for L3 payload) */ - if (GRE_TUNNEL_TYPE_ERSPAN == t->type) - vnet_set_interface_output_node (vnm, hw_if_index, - gre_erspan_encap_node.index); - else - vnet_set_interface_output_node (vnm, hw_if_index, - gre_teb_encap_node.index); - - hi = vnet_get_hw_interface (vnm, hw_if_index); - sw_if_index = hi->sw_if_index; - - t->hw_if_index = hw_if_index; - t->outer_fib_index = outer_fib_index; - t->sw_if_index = sw_if_index; - t->l2_adj_index = ADJ_INDEX_INVALID; - - vec_validate_init_empty (gm->tunnel_index_by_sw_if_index, sw_if_index, ~0); - gm->tunnel_index_by_sw_if_index[sw_if_index] = t_idx; - - if (!is_ipv6) - { - hi->frame_overhead = sizeof (gre_header_t) + sizeof (ip4_header_t); - hi->min_frame_size = hi->frame_overhead + 64; - } - else - { - hi->frame_overhead = sizeof (gre_header_t) + sizeof (ip6_header_t); - hi->min_frame_size = hi->frame_overhead + 64; - } - - /* Standard default gre MTU. */ - vnet_sw_interface_set_mtu (vnm, sw_if_index, 9000); - - /* - * source the FIB entry for the tunnel's destination - * and become a child thereof. The tunnel will then get poked - * when the forwarding for the entry updates, and the tunnel can - * re-stack accordingly - */ - - clib_memcpy (&t->tunnel_src, &a->src, sizeof (t->tunnel_src)); - t->tunnel_dst.fp_len = !is_ipv6 ? 32 : 128; - t->tunnel_dst.fp_proto = !is_ipv6 ? FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6; - t->tunnel_dst.fp_addr = a->dst; - - gre_tunnel_db_add (t, &key); - - if (t->mode == TUNNEL_MODE_MP) - teib_walk_itf (t->sw_if_index, gre_tunnel_add_teib_walk, t); - - if (t->type == GRE_TUNNEL_TYPE_ERSPAN) - { - gre_sn_key_t skey; - gre_sn_t *gre_sn; - - gre_mk_sn_key (t, &skey); - gre_sn = (gre_sn_t *) hash_get_mem (gm->seq_num_by_key, &skey); - if (gre_sn != NULL) - { - gre_sn->ref_count++; - t->gre_sn = gre_sn; - } - else - { - gre_sn = clib_mem_alloc (sizeof (gre_sn_t)); - gre_sn->seq_num = 0; - gre_sn->ref_count = 1; - t->gre_sn = gre_sn; - hash_set_mem_alloc (&gm->seq_num_by_key, &skey, (uword) gre_sn); - } - } - - if (t->type != GRE_TUNNEL_TYPE_L3) - { - t->l2_adj_index = adj_nbr_add_or_lock - (t->tunnel_dst.fp_proto, VNET_LINK_ETHERNET, &zero_addr, sw_if_index); - vnet_set_interface_l3_output_node (gm->vlib_main, sw_if_index, - (u8 *) "tunnel-output-no-count"); - gre_update_adj (vnm, t->sw_if_index, t->l2_adj_index); - } - else - { - vnet_set_interface_l3_output_node (gm->vlib_main, sw_if_index, - (u8 *) "tunnel-output"); - } - if (sw_if_indexp) - *sw_if_indexp = sw_if_index; - - /* register gre46-input nodes */ - ip4_register_protocol (IP_PROTOCOL_GRE, gre4_input_node.index); - ip6_register_protocol (IP_PROTOCOL_GRE, gre6_input_node.index); - - return 0; -} - -static int -vnet_gre_tunnel_delete (vnet_gre_tunnel_add_del_args_t * a, - u32 outer_fib_index, u32 * sw_if_indexp) -{ - gre_main_t *gm = &gre_main; - vnet_main_t *vnm = gm->vnet_main; - gre_tunnel_t *t; - gre_tunnel_key_t key; - u32 sw_if_index; - - t = gre_tunnel_db_find (a, outer_fib_index, &key); - if (NULL == t) - return VNET_API_ERROR_NO_SUCH_ENTRY; - - if (t->mode == TUNNEL_MODE_MP) - teib_walk_itf (t->sw_if_index, gre_tunnel_delete_teib_walk, t); - - sw_if_index = t->sw_if_index; - vnet_sw_interface_set_flags (vnm, sw_if_index, 0 /* down */ ); - - /* make sure tunnel is removed from l2 bd or xconnect */ - set_int_l2_mode (gm->vlib_main, vnm, MODE_L3, sw_if_index, 0, - L2_BD_PORT_TYPE_NORMAL, 0, 0); - gm->tunnel_index_by_sw_if_index[sw_if_index] = ~0; - - if (t->type == GRE_TUNNEL_TYPE_L3) - vnet_delete_hw_interface (vnm, t->hw_if_index); - else - ethernet_delete_interface (vnm, t->hw_if_index); - - if (t->l2_adj_index != ADJ_INDEX_INVALID) - { - adj_midchain_delegate_unstack (t->l2_adj_index); - adj_unlock (t->l2_adj_index); - } - - ASSERT ((t->type != GRE_TUNNEL_TYPE_ERSPAN) || (t->gre_sn != NULL)); - if ((t->type == GRE_TUNNEL_TYPE_ERSPAN) && (t->gre_sn->ref_count-- == 1)) - { - gre_sn_key_t skey; - gre_mk_sn_key (t, &skey); - hash_unset_mem_free (&gm->seq_num_by_key, &skey); - clib_mem_free (t->gre_sn); - } - - vnet_reset_interface_l3_output_node (gm->vlib_main, sw_if_index); - hash_unset (gm->instance_used, t->user_instance); - gre_tunnel_db_remove (t, &key); - pool_put (gm->tunnels, t); - - if (sw_if_indexp) - *sw_if_indexp = sw_if_index; - - return 0; -} - -int -vnet_gre_tunnel_add_del (vnet_gre_tunnel_add_del_args_t * a, - u32 * sw_if_indexp) -{ - u32 outer_fib_index; - - outer_fib_index = fib_table_find ((a->is_ipv6 ? - FIB_PROTOCOL_IP6 : - FIB_PROTOCOL_IP4), a->outer_table_id); - - if (~0 == outer_fib_index) - return VNET_API_ERROR_NO_SUCH_FIB; - - if (a->session_id > GTK_SESSION_ID_MAX) - return VNET_API_ERROR_INVALID_SESSION_ID; - - if (a->mode == TUNNEL_MODE_MP && !ip46_address_is_zero (&a->dst)) - return (VNET_API_ERROR_INVALID_DST_ADDRESS); - - if (a->is_add) - return (vnet_gre_tunnel_add (a, outer_fib_index, sw_if_indexp)); - else - return (vnet_gre_tunnel_delete (a, outer_fib_index, sw_if_indexp)); -} - -clib_error_t * -gre_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags) -{ - gre_main_t *gm = &gre_main; - vnet_hw_interface_t *hi; - gre_tunnel_t *t; - u32 ti; - - hi = vnet_get_hw_interface (vnm, hw_if_index); - - if (NULL == gm->tunnel_index_by_sw_if_index || - hi->sw_if_index >= vec_len (gm->tunnel_index_by_sw_if_index)) - return (NULL); - - ti = gm->tunnel_index_by_sw_if_index[hi->sw_if_index]; - - if (~0 == ti) - /* not one of ours */ - return (NULL); - - t = pool_elt_at_index (gm->tunnels, ti); - - if (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) - vnet_hw_interface_set_flags (vnm, hw_if_index, - VNET_HW_INTERFACE_FLAG_LINK_UP); - else - vnet_hw_interface_set_flags (vnm, hw_if_index, 0 /* down */ ); - - gre_tunnel_restack (t); - - return /* no error */ 0; -} - -static clib_error_t * -create_gre_tunnel_command_fn (vlib_main_t * vm, - unformat_input_t * input, - vlib_cli_command_t * cmd) -{ - unformat_input_t _line_input, *line_input = &_line_input; - vnet_gre_tunnel_add_del_args_t _a, *a = &_a; - ip46_address_t src = ip46_address_initializer, dst = - ip46_address_initializer; - u32 instance = ~0; - u32 outer_table_id = 0; - gre_tunnel_type_t t_type = GRE_TUNNEL_TYPE_L3; - tunnel_mode_t t_mode = TUNNEL_MODE_P2P; - tunnel_encap_decap_flags_t flags = TUNNEL_ENCAP_DECAP_FLAG_NONE; - u32 session_id = 0; - int rv; - u8 is_add = 1; - u32 sw_if_index; - clib_error_t *error = NULL; - - /* Get a line of input. */ - if (!unformat_user (input, unformat_line_input, line_input)) - return 0; - - while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) - { - if (unformat (line_input, "del")) - is_add = 0; - else if (unformat (line_input, "instance %d", &instance)) - ; - else if (unformat (line_input, "src %U", unformat_ip46_address, &src)) - ; - else if (unformat (line_input, "dst %U", unformat_ip46_address, &dst)) - ; - else if (unformat (line_input, "outer-table-id %d", &outer_table_id)) - ; - else if (unformat (line_input, "multipoint")) - t_mode = TUNNEL_MODE_MP; - else if (unformat (line_input, "teb")) - t_type = GRE_TUNNEL_TYPE_TEB; - else if (unformat (line_input, "erspan %d", &session_id)) - t_type = GRE_TUNNEL_TYPE_ERSPAN; - else - if (unformat - (line_input, "flags %U", unformat_tunnel_encap_decap_flags, - &flags)) - ; - else - { - error = clib_error_return (0, "unknown input `%U'", - format_unformat_error, line_input); - goto done; - } - } - - if (ip46_address_is_equal (&src, &dst)) - { - error = clib_error_return (0, "src and dst are identical"); - goto done; - } - - if (t_mode != TUNNEL_MODE_MP && ip46_address_is_zero (&dst)) - { - error = clib_error_return (0, "destination address not specified"); - goto done; - } - - if (ip46_address_is_zero (&src)) - { - error = clib_error_return (0, "source address not specified"); - goto done; - } - - if (ip46_address_is_ip4 (&src) != ip46_address_is_ip4 (&dst)) - { - error = - clib_error_return (0, "src and dst address must be the same AF"); - goto done; - } - - clib_memset (a, 0, sizeof (*a)); - a->is_add = is_add; - a->outer_table_id = outer_table_id; - a->type = t_type; - a->mode = t_mode; - a->session_id = session_id; - a->is_ipv6 = !ip46_address_is_ip4 (&src); - a->instance = instance; - a->flags = flags; - clib_memcpy (&a->src, &src, sizeof (a->src)); - clib_memcpy (&a->dst, &dst, sizeof (a->dst)); - - rv = vnet_gre_tunnel_add_del (a, &sw_if_index); - - switch (rv) - { - case 0: - vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name, - vnet_get_main (), sw_if_index); - break; - case VNET_API_ERROR_IF_ALREADY_EXISTS: - error = clib_error_return (0, "GRE tunnel already exists..."); - goto done; - case VNET_API_ERROR_NO_SUCH_FIB: - error = clib_error_return (0, "outer table ID %d doesn't exist\n", - outer_table_id); - goto done; - case VNET_API_ERROR_NO_SUCH_ENTRY: - error = clib_error_return (0, "GRE tunnel doesn't exist"); - goto done; - case VNET_API_ERROR_INVALID_SESSION_ID: - error = clib_error_return (0, "session ID %d out of range\n", - session_id); - goto done; - case VNET_API_ERROR_INSTANCE_IN_USE: - error = clib_error_return (0, "Instance is in use"); - goto done; - default: - error = - clib_error_return (0, "vnet_gre_tunnel_add_del returned %d", rv); - goto done; - } - -done: - unformat_free (line_input); - - return error; -} - -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (create_gre_tunnel_command, static) = { - .path = "create gre tunnel", - .short_help = "create gre tunnel src <addr> dst <addr> [instance <n>] " - "[outer-fib-id <fib>] [teb | erspan <session-id>] [del] " - "[multipoint]", - .function = create_gre_tunnel_command_fn, -}; -/* *INDENT-ON* */ - -static clib_error_t * -show_gre_tunnel_command_fn (vlib_main_t * vm, - unformat_input_t * input, - vlib_cli_command_t * cmd) -{ - gre_main_t *gm = &gre_main; - gre_tunnel_t *t; - u32 ti = ~0; - - if (pool_elts (gm->tunnels) == 0) - vlib_cli_output (vm, "No GRE tunnels configured..."); - - while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) - { - if (unformat (input, "%d", &ti)) - ; - else - break; - } - - if (~0 == ti) - { - /* *INDENT-OFF* */ - pool_foreach (t, gm->tunnels) - { - vlib_cli_output (vm, "%U", format_gre_tunnel, t); - } - /* *INDENT-ON* */ - } - else - { - t = pool_elt_at_index (gm->tunnels, ti); - - vlib_cli_output (vm, "%U", format_gre_tunnel, t); - } - - return 0; -} - -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (show_gre_tunnel_command, static) = { - .path = "show gre tunnel", - .function = show_gre_tunnel_command_fn, -}; -/* *INDENT-ON* */ - -const static teib_vft_t gre_teib_vft = { - .nv_added = gre_teib_entry_added, - .nv_deleted = gre_teib_entry_deleted, -}; - -/* force inclusion from application's main.c */ -clib_error_t * -gre_interface_init (vlib_main_t * vm) -{ - teib_register (&gre_teib_vft); - - return (NULL); -} - -VLIB_INIT_FUNCTION (gre_interface_init); - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ 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: - */ diff --git a/src/vnet/gre/pg.c b/src/vnet/gre/pg.c deleted file mode 100644 index 38a3a07ebad..00000000000 --- a/src/vnet/gre/pg.c +++ /dev/null @@ -1,86 +0,0 @@ -/* - * hdlc_pg.c: packet generator gre interface - * - * 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> - -typedef struct -{ - pg_edit_t flags_and_version; - pg_edit_t protocol; -} pg_gre_header_t; - -static inline void -pg_gre_header_init (pg_gre_header_t * e) -{ - pg_edit_init (&e->flags_and_version, gre_header_t, flags_and_version); - pg_edit_init (&e->protocol, gre_header_t, protocol); -} - -uword -unformat_pg_gre_header (unformat_input_t * input, va_list * args) -{ - pg_stream_t *s = va_arg (*args, pg_stream_t *); - pg_gre_header_t *h; - u32 group_index, error; - - h = pg_create_edit_group (s, sizeof (h[0]), sizeof (gre_header_t), - &group_index); - pg_gre_header_init (h); - - pg_edit_set_fixed (&h->flags_and_version, 0); - - error = 1; - if (!unformat (input, "%U", - unformat_pg_edit, - unformat_gre_protocol_net_byte_order, &h->protocol)) - goto done; - - { - gre_main_t *pm = &gre_main; - gre_protocol_info_t *pi = 0; - pg_node_t *pg_node = 0; - - if (h->protocol.type == PG_EDIT_FIXED) - { - u16 t = *(u16 *) h->protocol.values[PG_EDIT_LO]; - pi = gre_get_protocol_info (pm, clib_net_to_host_u16 (t)); - if (pi && pi->node_index != ~0) - pg_node = pg_get_node (pi->node_index); - } - - if (pg_node && pg_node->unformat_edit - && unformat_user (input, pg_node->unformat_edit, s)) - ; - } - - error = 0; -done: - if (error) - pg_free_edit_group (s); - return error == 0; -} - - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |