lisp: fix vat crash with one_add_del_local_eid api - vpp

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author	Onong Tayeng <otayeng@cisco.com>	2020-09-10 21:16:55 +0530
committer	Florin Coras <florin.coras@gmail.com>	2020-09-10 16:59:15 +0000
commit	5f473c0efc9e0ff068273520b058b8ac498dc597 (patch)
tree	9e8592326c7a19f4fed159dc9ff74a975b625f3d /src/plugins/srv6-mobile/mobile_plugin_doc.md
parent	cf527882e2fe49eda108cd63af175431222beebe (diff)

lisp: fix vat crash with one_add_del_local_eid api

VAT crashes when the one_add_del_local_eid api is invoked with mac address as eid. Type: fix Signed-off-by: Onong Tayeng <otayeng@cisco.com> Change-Id: I29e246f6cad4b350fec52d54e94dbed586d488c4

Diffstat (limited to 'src/plugins/srv6-mobile/mobile_plugin_doc.md')

0 files changed, 0 insertions, 0 deletions

/* * decap.c - decapsulate VXLAN GPE * * Copyright (c) 2013 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /** * @file * @brief Functions for decapsulating VXLAN GPE tunnels * */ #include <vlib/vlib.h> #include <vnet/udp/udp_local.h> #include <vnet/vxlan-gpe/vxlan_gpe.h> /** * @brief Struct for VXLAN GPE decap packet tracing * */ typedef struct { u32 next_index; u32 tunnel_index; u32 error; } vxlan_gpe_rx_trace_t; /** * @brief Tracing function for VXLAN GPE packet decapsulation * * @param *s * @param *args * * @return *s * */ static u8 * format_vxlan_gpe_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 *); vxlan_gpe_rx_trace_t *t = va_arg (*args, vxlan_gpe_rx_trace_t *); if (t->tunnel_index != ~0) { s = format (s, "VXLAN-GPE: tunnel %d next %d error %d", t->tunnel_index, t->next_index, t->error); } else { s = format (s, "VXLAN-GPE: no tunnel next %d error %d\n", t->next_index, t->error); } return s; } /** * @brief Tracing function for VXLAN GPE packet decapsulation including length * * @param *s * @param *args * * @return *s * */ static u8 * format_vxlan_gpe_with_length (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 *); return s; } /** * @brief Common processing for IPv4 and IPv6 VXLAN GPE decap dispatch functions * * It is worth noting that other than trivial UDP forwarding (transit), VXLAN GPE * tunnels are "terminate local". This means that there is no "TX" interface for this * decap case, so that field in the buffer_metadata can be "used for something else". * The something else in this case is, for the IPv4/IPv6 inner-packet type case, the * FIB index used to look up the inner-packet's adjacency. * * vnet_buffer(b0)->sw_if_index[VLIB_TX] = t0->decap_fib_index; * * @param *vm * @param *node * @param *from_frame * @param is_ip4 * * @return from_frame->n_vectors * */ always_inline uword vxlan_gpe_input (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame, u8 is_ip4) { u32 n_left_from, next_index, *from, *to_next; vxlan_gpe_main_t *nngm = &vxlan_gpe_main; vnet_main_t *vnm = nngm->vnet_main; vnet_interface_main_t *im = &vnm->interface_main; u32 last_tunnel_index = ~0; vxlan4_gpe_tunnel_key_t last_key4; vxlan6_gpe_tunnel_key_t last_key6; u32 pkts_decapsulated = 0; u32 thread_index = vm->thread_index; u32 stats_sw_if_index, stats_n_packets, stats_n_bytes; if (is_ip4) clib_memset (&last_key4, 0xff, sizeof (last_key4)); else clib_memset (&last_key6, 0xff, sizeof (last_key6)); from = vlib_frame_vector_args (from_frame); n_left_from = from_frame->n_vectors; next_index = node->cached_next_index; stats_sw_if_index = node->runtime_data[0]; stats_n_packets = stats_n_bytes = 0; while (n_left_from > 0) { u32 n_left_to_next; vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); while (n_left_from >= 4 && n_left_to_next >= 2) { u32 bi0, bi1; vlib_buffer_t *b0, *b1; u32 next0, next1; ip4_vxlan_gpe_header_t *iuvn4_0, *iuvn4_1; ip6_vxlan_gpe_header_t *iuvn6_0, *iuvn6_1; uword *p0, *p1; u32 tunnel_index0, tunnel_index1; vxlan_gpe_tunnel_t *t0, *t1; vxlan4_gpe_tunnel_key_t key4_0, key4_1; vxlan6_gpe_tunnel_key_t key6_0, key6_1; u32 error0, error1; u32 sw_if_index0, sw_if_index1, len0, len1; /* Prefetch next iteration. */ { vlib_buffer_t *p2, *p3; p2 = vlib_get_buffer (vm, from[2]); p3 = vlib_get_buffer (vm, from[3]); vlib_prefetch_buffer_header (p2, LOAD); vlib_prefetch_buffer_header (p3, LOAD); CLIB_PREFETCH (p2->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD); CLIB_PREFETCH (p3->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD); } bi0 = from[0]; bi1 = from[1]; to_next[0] = bi0; to_next[1] = bi1; from += 2; to_next += 2; n_left_to_next -= 2; n_left_from -= 2; b0 = vlib_get_buffer (vm, bi0); b1 = vlib_get_buffer (vm, bi1); if (is_ip4) { /* udp leaves current_data pointing at the vxlan-gpe header */ vlib_buffer_advance (b0, -(word) (sizeof (udp_header_t) + sizeof (ip4_header_t))); vlib_buffer_advance (b1, -(word) (sizeof (udp_header_t) + sizeof (ip4_header_t))); iuvn4_0 = vlib_buffer_get_current (b0); iuvn4_1 = vlib_buffer_get_current (b1); /* pop (ip, udp, vxlan) */ vlib_buffer_advance (b0, sizeof (*iuvn4_0)); vlib_buffer_advance (b1, sizeof (*iuvn4_1)); } else { /* udp leaves current_data pointing at the vxlan-gpe header */ vlib_buffer_advance (b0, -(word) (sizeof (udp_header_t) + sizeof (ip6_header_t))); vlib_buffer_advance (b1, -(word) (sizeof (udp_header_t) + sizeof (ip6_header_t))); iuvn6_0 = vlib_buffer_get_current (b0); iuvn6_1 = vlib_buffer_get_current (b1); /* pop (ip, udp, vxlan) */ vlib_buffer_advance (b0, sizeof (*iuvn6_0)); vlib_buffer_advance (b1, sizeof (*iuvn6_1)); } tunnel_index0 = ~0; tunnel_index1 = ~0; error0 = 0; error1 = 0; if (is_ip4) { next0 = (iuvn4_0->vxlan.protocol < VXLAN_GPE_PROTOCOL_MAX) ? nngm->decap_next_node_list[iuvn4_0->vxlan.protocol] : VXLAN_GPE_INPUT_NEXT_DROP; next1 = (iuvn4_1->vxlan.protocol < VXLAN_GPE_PROTOCOL_MAX) ? nngm->decap_next_node_list[iuvn4_1->vxlan.protocol] : VXLAN_GPE_INPUT_NEXT_DROP; key4_0.local = iuvn4_0->ip4.dst_address.as_u32; key4_1.local = iuvn4_1->ip4.dst_address.as_u32; key4_0.remote = iuvn4_0->ip4.src_address.as_u32; key4_1.remote = iuvn4_1->ip4.src_address.as_u32; key4_0.vni = iuvn4_0->vxlan.vni_res; key4_1.vni = iuvn4_1->vxlan.vni_res; key4_0.pad = 0; key4_1.pad = 0; } else /* is_ip6 */ { next0 = (iuvn6_0->vxlan.protocol < node->n_next_nodes) ? iuvn6_0->vxlan.protocol : VXLAN_GPE_INPUT_NEXT_DROP; next1 = (iuvn6_1->vxlan.protocol < node->n_next_nodes) ? iuvn6_1->vxlan.protocol : VXLAN_GPE_INPUT_NEXT_DROP; key6_0.local.as_u64[0] = iuvn6_0->ip6.dst_address.as_u64[0]; key6_0.local.as_u64[1] = iuvn6_0->ip6.dst_address.as_u64[1]; key6_1.local.as_u64[0] = iuvn6_1->ip6.dst_address.as_u64[0]; key6_1.local.as_u64[1] = iuvn6_1->ip6.dst_address.as_u64[1]; key6_0.remote.as_u64[0] = iuvn6_0->ip6.src_address.as_u64[0]; key6_0.remote.as_u64[1] = iuvn6_0->ip6.src_address.as_u64[1]; key6_1.remote.as_u64[0] = iuvn6_1->ip6.src_address.as_u64[0]; key6_1.remote.as_u64[1] = iuvn6_1->ip6.src_address.as_u64[1]; key6_0.vni = iuvn6_0->vxlan.vni_res; key6_1.vni = iuvn6_1->vxlan.vni_res; } /* Processing packet 0 */ if (is_ip4) { /* Processing for key4_0 */ if (PREDICT_FALSE ((key4_0.as_u64[0] != last_key4.as_u64[0]) || (key4_0.as_u64[1] != last_key4.as_u64[1]))) { p0 = hash_get_mem (nngm->vxlan4_gpe_tunnel_by_key, &key4_0); if (p0 == 0) { error0 = VXLAN_GPE_ERROR_NO_SUCH_TUNNEL; goto trace0; } last_key4.as_u64[0] = key4_0.as_u64[0]; last_key4.as_u64[1] = key4_0.as_u64[1]; tunnel_index0 = last_tunnel_index = p0[0]; } else tunnel_index0 = last_tunnel_index; } else /* is_ip6 */ { next0 = (iuvn6_0->vxlan.protocol < VXLAN_GPE_PROTOCOL_MAX) ? nngm->decap_next_node_list[iuvn6_0->vxlan.protocol] : VXLAN_GPE_INPUT_NEXT_DROP; next1 = (iuvn6_1->vxlan.protocol < VXLAN_GPE_PROTOCOL_MAX) ? nngm->decap_next_node_list[iuvn6_1->vxlan.protocol] : VXLAN_GPE_INPUT_NEXT_DROP; key6_0.local.as_u64[0] = iuvn6_0->ip6.dst_address.as_u64[0]; key6_0.local.as_u64[1] = iuvn6_0->ip6.dst_address.as_u64[1]; key6_1.local.as_u64[0] = iuvn6_1->ip6.dst_address.as_u64[0]; key6_1.local.as_u64[1] = iuvn6_1->ip6.dst_address.as_u64[1]; key6_0.remote.as_u64[0] = iuvn6_0->ip6.src_address.as_u64[0]; key6_0.remote.as_u64[1] = iuvn6_0->ip6.src_address.as_u64[1]; key6_1.remote.as_u64[0] = iuvn6_1->ip6.src_address.as_u64[0]; key6_1.remote.as_u64[1] = iuvn6_1->ip6.src_address.as_u64[1]; key6_0.vni = iuvn6_0->vxlan.vni_res; key6_1.vni = iuvn6_1->vxlan.vni_res; /* Processing for key6_0 */ if (PREDICT_FALSE (memcmp (&key6_0, &last_key6, sizeof (last_key6)) != 0)) { p0 = hash_get_mem (nngm->vxlan6_gpe_tunnel_by_key, &key6_0); if (p0 == 0) { error0 = VXLAN_GPE_ERROR_NO_SUCH_TUNNEL; goto trace0; } memcpy (&last_key6, &key6_0, sizeof (key6_0)); tunnel_index0 = last_tunnel_index = p0[0]; } else tunnel_index0 = last_tunnel_index; } t0 = pool_elt_at_index (nngm->tunnels, tunnel_index0); sw_if_index0 = t0->sw_if_index; len0 = vlib_buffer_length_in_chain (vm, b0); /* Required to make the l2 tag push / pop code work on l2 subifs */ vnet_update_l2_len (b0); /* Set packet input sw_if_index to unicast VXLAN tunnel for learning */ vnet_buffer (b0)->sw_if_index[VLIB_RX] = t0->sw_if_index; /** * ip[46] lookup in the configured FIB */ vnet_buffer (b0)->sw_if_index[VLIB_TX] = t0->decap_fib_index; pkts_decapsulated++; stats_n_packets += 1; stats_n_bytes += len0; if (PREDICT_FALSE (sw_if_index0 != stats_sw_if_index)) { stats_n_packets -= 1; stats_n_bytes -= len0; if (stats_n_packets) vlib_increment_combined_counter (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX, thread_index, stats_sw_if_index, stats_n_packets, stats_n_bytes); stats_n_packets = 1; stats_n_bytes = len0; stats_sw_if_index = sw_if_index0; } trace0:b0->error = error0 ? node->errors[error0] : 0; if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) { vxlan_gpe_rx_trace_t *tr = vlib_add_trace (vm, node, b0, sizeof (*tr)); tr->next_index = next0; tr->error = error0; tr->tunnel_index = tunnel_index0; } /* Process packet 1 */ if (is_ip4) { /* Processing for key4_1 */ if (PREDICT_FALSE ((key4_1.as_u64[0] != last_key4.as_u64[0]) || (key4_1.as_u64[1] != last_key4.as_u64[1]))) { p1 = hash_get_mem (nngm->vxlan4_gpe_tunnel_by_key, &key4_1); if (p1 == 0) { error1 = VXLAN_GPE_ERROR_NO_SUCH_TUNNEL; goto trace1; } last_key4.as_u64[0] = key4_1.as_u64[0]; last_key4.as_u64[1] = key4_1.as_u64[1]; tunnel_index1 = last_tunnel_index = p1[0]; } else tunnel_index1 = last_tunnel_index; } else /* is_ip6 */ { /* Processing for key6_1 */ if (PREDICT_FALSE (memcmp (&key6_1, &last_key6, sizeof (last_key6)) != 0)) { p1 = hash_get_mem (nngm->vxlan6_gpe_tunnel_by_key, &key6_1); if (p1 == 0) { error1 = VXLAN_GPE_ERROR_NO_SUCH_TUNNEL; goto trace1; } memcpy (&last_key6, &key6_1, sizeof (key6_1)); tunnel_index1 = last_tunnel_index = p1[0]; } else tunnel_index1 = last_tunnel_index; } t1 = pool_elt_at_index (nngm->tunnels, tunnel_index1); sw_if_index1 = t1->sw_if_index; len1 = vlib_buffer_length_in_chain (vm, b1); /* Required to make the l2 tag push / pop code work on l2 subifs */ vnet_update_l2_len (b1); /* Set packet input sw_if_index to unicast VXLAN tunnel for learning */ vnet_buffer (b1)->sw_if_index[VLIB_RX] = t1->sw_if_index; /* * ip[46] lookup in the configured FIB */ vnet_buffer (b1)->sw_if_index[VLIB_TX] = t1->decap_fib_index; pkts_decapsulated++; stats_n_packets += 1; stats_n_bytes += len1; /* Batch stats increment on the same vxlan tunnel so counter is not incremented per packet */ if (PREDICT_FALSE (sw_if_index1 != stats_sw_if_index)) { stats_n_packets -= 1; stats_n_bytes -= len1; if (stats_n_packets) vlib_increment_combined_counter (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX, thread_index, stats_sw_if_index, stats_n_packets, stats_n_bytes); stats_n_packets = 1; stats_n_bytes = len1; stats_sw_if_index = sw_if_index1; } vnet_buffer (b1)->sw_if_index[VLIB_TX] = t1->decap_fib_index; trace1:b1->error = error1 ? node->errors[error1] : 0; if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED)) { vxlan_gpe_rx_trace_t *tr = vlib_add_trace (vm, node, b1, sizeof (*tr)); tr->next_index = next1; tr->error = error1; tr->tunnel_index = tunnel_index1; } vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next, n_left_to_next, bi0, bi1, next0, next1); } while (n_left_from > 0 && n_left_to_next > 0) { u32 bi0; vlib_buffer_t *b0; u32 next0; ip4_vxlan_gpe_header_t *iuvn4_0; ip6_vxlan_gpe_header_t *iuvn6_0; uword *p0; u32 tunnel_index0; vxlan_gpe_tunnel_t *t0; vxlan4_gpe_tunnel_key_t key4_0; vxlan6_gpe_tunnel_key_t key6_0; u32 error0; u32 sw_if_index0, len0; bi0 = from[0]; to_next[0] = bi0; from += 1; to_next += 1; n_left_from -= 1; n_left_to_next -= 1; b0 = vlib_get_buffer (vm, bi0); if (is_ip4) { /* udp leaves current_data pointing at the vxlan-gpe header */ vlib_buffer_advance (b0, -(word) (sizeof (udp_header_t) + sizeof (ip4_header_t))); iuvn4_0 = vlib_buffer_get_current (b0); /* pop (ip, udp, vxlan) */ vlib_buffer_advance (b0, sizeof (*iuvn4_0)); } else { /* udp leaves current_data pointing at the vxlan-gpe header */ vlib_buffer_advance (b0, -(word) (sizeof (udp_header_t) + sizeof (ip6_header_t))); iuvn6_0 = vlib_buffer_get_current (b0); /* pop (ip, udp, vxlan) */ vlib_buffer_advance (b0, sizeof (*iuvn6_0)); } tunnel_index0 = ~0; error0 = 0; if (is_ip4) { next0 = (iuvn4_0->vxlan.protocol < VXLAN_GPE_PROTOCOL_MAX) ? nngm->decap_next_node_list[iuvn4_0->vxlan.protocol] : VXLAN_GPE_INPUT_NEXT_DROP; key4_0.local = iuvn4_0->ip4.dst_address.as_u32; key4_0.remote = iuvn4_0->ip4.src_address.as_u32; key4_0.vni = iuvn4_0->vxlan.vni_res; key4_0.pad = 0; /* Processing for key4_0 */ if (PREDICT_FALSE ((key4_0.as_u64[0] != last_key4.as_u64[0]) || (key4_0.as_u64[1] != last_key4.as_u64[1]))) { p0 = hash_get_mem (nngm->vxlan4_gpe_tunnel_by_key, &key4_0); if (p0 == 0) { error0 = VXLAN_GPE_ERROR_NO_SUCH_TUNNEL; goto trace00; } last_key4.as_u64[0] = key4_0.as_u64[0]; last_key4.as_u64[1] = key4_0.as_u64[1]; tunnel_index0 = last_tunnel_index = p0[0]; } else tunnel_index0 = last_tunnel_index; } else /* is_ip6 */ { next0 = (iuvn6_0->vxlan.protocol < VXLAN_GPE_PROTOCOL_MAX) ? nngm->decap_next_node_list[iuvn6_0->vxlan.protocol] : VXLAN_GPE_INPUT_NEXT_DROP; key6_0.local.as_u64[0] = iuvn6_0->ip6.dst_address.as_u64[0]; key6_0.local.as_u64[1] = iuvn6_0->ip6.dst_address.as_u64[1]; key6_0.remote.as_u64[0] = iuvn6_0->ip6.src_address.as_u64[0]; key6_0.remote.as_u64[1] = iuvn6_0->ip6.src_address.as_u64[1]; key6_0.vni = iuvn6_0->vxlan.vni_res; /* Processing for key6_0 */ if (PREDICT_FALSE (memcmp (&key6_0, &last_key6, sizeof (last_key6)) != 0)) { p0 = hash_get_mem (nngm->vxlan6_gpe_tunnel_by_key, &key6_0); if (p0 == 0) { error0 = VXLAN_GPE_ERROR_NO_SUCH_TUNNEL; goto trace00; } memcpy (&last_key6, &key6_0, sizeof (key6_0)); tunnel_index0 = last_tunnel_index = p0[0]; } else tunnel_index0 = last_tunnel_index; } t0 = pool_elt_at_index (nngm->tunnels, tunnel_index0); sw_if_index0 = t0->sw_if_index; len0 = vlib_buffer_length_in_chain (vm, b0); /* Required to make the l2 tag push / pop code work on l2 subifs */ vnet_update_l2_len (b0); /* Set packet input sw_if_index to unicast VXLAN tunnel for learning */ vnet_buffer (b0)->sw_if_index[VLIB_RX] = t0->sw_if_index; /* * ip[46] lookup in the configured FIB */ vnet_buffer (b0)->sw_if_index[VLIB_TX] = t0->decap_fib_index; pkts_decapsulated++; stats_n_packets += 1; stats_n_bytes += len0; /* Batch stats increment on the same vxlan-gpe tunnel so counter is not incremented per packet */ if (PREDICT_FALSE (sw_if_index0 != stats_sw_if_index)) { stats_n_packets -= 1; stats_n_bytes -= len0; if (stats_n_packets) vlib_increment_combined_counter (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX, thread_index, stats_sw_if_index, stats_n_packets, stats_n_bytes); stats_n_packets = 1; stats_n_bytes = len0; stats_sw_if_index = sw_if_index0; } trace00:b0->error = error0 ? node->errors[error0] : 0; if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) { vxlan_gpe_rx_trace_t *tr = vlib_add_trace (vm, node, b0, sizeof (*tr)); tr->next_index = next0; tr->error = error0; tr->tunnel_index = tunnel_index0; } vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, n_left_to_next, bi0, next0); } vlib_put_next_frame (vm, node, next_index, n_left_to_next); } vlib_node_increment_counter (vm, is_ip4 ? vxlan4_gpe_input_node.index : vxlan6_gpe_input_node.index, VXLAN_GPE_ERROR_DECAPSULATED, pkts_decapsulated); /* Increment any remaining batch stats */ if (stats_n_packets) { vlib_increment_combined_counter (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX, thread_index, stats_sw_if_index, stats_n_packets, stats_n_bytes); node->runtime_data[0] = stats_sw_if_index; } return from_frame->n_vectors; } /** * @brief Graph processing dispatch function for IPv4 VXLAN GPE * * @node vxlan4-gpe-input * @param *vm * @param *node * @param *from_frame * * @return from_frame->n_vectors * */ VLIB_NODE_FN (vxlan4_gpe_input_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame) { return vxlan_gpe_input (vm, node, from_frame, /* is_ip4 */ 1); } #ifndef CLIB_MARCH_VARIANT void vxlan_gpe_register_decap_protocol (u8 protocol_id, uword next_node_index) { vxlan_gpe_main_t *hm = &vxlan_gpe_main; hm->decap_next_node_list[protocol_id] = next_node_index; return; } void vxlan_gpe_unregister_decap_protocol (u8 protocol_id, uword next_node_index) { vxlan_gpe_main_t *hm = &vxlan_gpe_main; hm->decap_next_node_list[protocol_id] = VXLAN_GPE_INPUT_NEXT_DROP; return; } #endif /* CLIB_MARCH_VARIANT */ /** * @brief Graph processing dispatch function for IPv6 VXLAN GPE * * @node vxlan6-gpe-input * @param *vm * @param *node * @param *from_frame * * @return from_frame->n_vectors - uword * */ VLIB_NODE_FN (vxlan6_gpe_input_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame) { return vxlan_gpe_input (vm, node, from_frame, /* is_ip4 */ 0); } /** * @brief VXLAN GPE error strings */ static char *vxlan_gpe_error_strings[] = { #define vxlan_gpe_error(n,s) s, #include <vnet/vxlan-gpe/vxlan_gpe_error.def> #undef vxlan_gpe_error #undef _ }; /* *INDENT-OFF* */ VLIB_REGISTER_NODE (vxlan4_gpe_input_node) = { .name = "vxlan4-gpe-input", /* Takes a vector of packets. */ .vector_size = sizeof (u32), .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = ARRAY_LEN(vxlan_gpe_error_strings), .error_strings = vxlan_gpe_error_strings, .n_next_nodes = VXLAN_GPE_INPUT_N_NEXT, .next_nodes = { #define _(s,n) [VXLAN_GPE_INPUT_NEXT_##s] = n, foreach_vxlan_gpe_input_next #undef _ }, .format_buffer = format_vxlan_gpe_with_length, .format_trace = format_vxlan_gpe_rx_trace, // $$$$ .unformat_buffer = unformat_vxlan_gpe_header, }; /* *INDENT-ON* */ /* *INDENT-OFF* */ VLIB_REGISTER_NODE (vxlan6_gpe_input_node) = { .name = "vxlan6-gpe-input", /* Takes a vector of packets. */ .vector_size = sizeof (u32), .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = ARRAY_LEN(vxlan_gpe_error_strings), .error_strings = vxlan_gpe_error_strings, .n_next_nodes = VXLAN_GPE_INPUT_N_NEXT, .next_nodes = { #define _(s,n) [VXLAN_GPE_INPUT_NEXT_##s] = n, foreach_vxlan_gpe_input_next #undef _ }, .format_buffer = format_vxlan_gpe_with_length, .format_trace = format_vxlan_gpe_rx_trace, // $$$$ .unformat_buffer = unformat_vxlan_gpe_header, }; /* *INDENT-ON* */ typedef enum { IP_VXLAN_BYPASS_NEXT_DROP, IP_VXLAN_BYPASS_NEXT_VXLAN, IP_VXLAN_BYPASS_N_NEXT, } ip_vxlan_bypass_next_t; always_inline uword ip_vxlan_gpe_bypass_inline (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame, u32 is_ip4) { vxlan_gpe_main_t *ngm = &vxlan_gpe_main; u32 *from, *to_next, n_left_from, n_left_to_next, next_index; vlib_node_runtime_t *error_node = vlib_node_get_runtime (vm, ip4_input_node.index); vtep4_key_t last_vtep4; /* last IPv4 address / fib index matching a local VTEP address */ vtep6_key_t last_vtep6; /* last IPv6 address / fib index matching a local VTEP address */ vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs; from = vlib_frame_vector_args (frame); n_left_from = frame->n_vectors; next_index = node->cached_next_index; vlib_get_buffers (vm, from, bufs, n_left_from); if (node->flags & VLIB_NODE_FLAG_TRACE) ip4_forward_next_trace (vm, node, frame, VLIB_TX); if (is_ip4) vtep4_key_init (&last_vtep4); else vtep6_key_init (&last_vtep6); while (n_left_from > 0) { vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); while (n_left_from >= 4 && n_left_to_next >= 2) { vlib_buffer_t *b0, *b1; ip4_header_t *ip40, *ip41; ip6_header_t *ip60, *ip61; udp_header_t *udp0, *udp1; u32 bi0, ip_len0, udp_len0, flags0, next0; u32 bi1, ip_len1, udp_len1, flags1, next1; i32 len_diff0, len_diff1; u8 error0, good_udp0, proto0; u8 error1, good_udp1, proto1; /* Prefetch next iteration. */ { vlib_prefetch_buffer_header (b[2], LOAD); vlib_prefetch_buffer_header (b[3], LOAD); CLIB_PREFETCH (b[2]->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD); CLIB_PREFETCH (b[3]->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD); } bi0 = to_next[0] = from[0]; bi1 = to_next[1] = from[1]; from += 2; n_left_from -= 2; to_next += 2; n_left_to_next -= 2; b0 = b[0]; b1 = b[1]; b += 2; if (is_ip4) { ip40 = vlib_buffer_get_current (b0); ip41 = vlib_buffer_get_current (b1); } else { ip60 = vlib_buffer_get_current (b0); ip61 = vlib_buffer_get_current (b1); } /* Setup packet for next IP feature */ vnet_feature_next (&next0, b0); vnet_feature_next (&next1, b1); if (is_ip4) { proto0 = ip40->protocol; proto1 = ip41->protocol; } else { proto0 = ip60->protocol; proto1 = ip61->protocol; } /* Process packet 0 */ if (proto0 != IP_PROTOCOL_UDP) goto exit0; /* not UDP packet */ if (is_ip4) udp0 = ip4_next_header (ip40); else udp0 = ip6_next_header (ip60); if (udp0->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_VXLAN_GPE)) goto exit0; /* not VXLAN packet */ /* Validate DIP against VTEPs */ if (is_ip4) { #ifdef CLIB_HAVE_VEC512 if (!vtep4_check_vector (&ngm->vtep_table, b0, ip40, &last_vtep4, &ngm->vtep4_u512)) #else if (!vtep4_check (&ngm->vtep_table, b0, ip40, &last_vtep4)) #endif goto exit0; /* no local VTEP for VXLAN packet */ } else { if (!vtep6_check (&ngm->vtep_table, b0, ip60, &last_vtep6)) goto exit0; /* no local VTEP for VXLAN packet */ } flags0 = b0->flags; good_udp0 = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0; /* Don't verify UDP checksum for packets with explicit zero checksum. */ good_udp0 |= udp0->checksum == 0; /* Verify UDP length */ if (is_ip4) ip_len0 = clib_net_to_host_u16 (ip40->length); else ip_len0 = clib_net_to_host_u16 (ip60->payload_length); udp_len0 = clib_net_to_host_u16 (udp0->length); len_diff0 = ip_len0 - udp_len0; /* Verify UDP checksum */ if (PREDICT_FALSE (!good_udp0)) { if ((flags0 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0) { if (is_ip4) flags0 = ip4_tcp_udp_validate_checksum (vm, b0); else flags0 = ip6_tcp_udp_icmp_validate_checksum (vm, b0); good_udp0 = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0; } } if (is_ip4) { error0 = good_udp0 ? 0 : IP4_ERROR_UDP_CHECKSUM; error0 = (len_diff0 >= 0) ? error0 : IP4_ERROR_UDP_LENGTH; } else { error0 = good_udp0 ? 0 : IP6_ERROR_UDP_CHECKSUM; error0 = (len_diff0 >= 0) ? error0 : IP6_ERROR_UDP_LENGTH; } next0 = error0 ? IP_VXLAN_BYPASS_NEXT_DROP : IP_VXLAN_BYPASS_NEXT_VXLAN; b0->error = error0 ? error_node->errors[error0] : 0; /* vxlan_gpe-input node expect current at VXLAN header */ if (is_ip4) vlib_buffer_advance (b0, sizeof (ip4_header_t) + sizeof (udp_header_t)); else vlib_buffer_advance (b0, sizeof (ip6_header_t) + sizeof (udp_header_t)); exit0: /* Process packet 1 */ if (proto1 != IP_PROTOCOL_UDP) goto exit1; /* not UDP packet */ if (is_ip4) udp1 = ip4_next_header (ip41); else udp1 = ip6_next_header (ip61); if (udp1->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_VXLAN_GPE)) goto exit1; /* not VXLAN packet */ /* Validate DIP against VTEPs */ if (is_ip4) { #ifdef CLIB_HAVE_VEC512 if (!vtep4_check_vector (&ngm->vtep_table, b1, ip41, &last_vtep4, &ngm->vtep4_u512)) #else if (!vtep4_check (&ngm->vtep_table, b1, ip41, &last_vtep4)) #endif goto exit1; /* no local VTEP for VXLAN packet */ } else { if (!vtep6_check (&ngm->vtep_table, b1, ip61, &last_vtep6)) goto exit1; /* no local VTEP for VXLAN packet */ } flags1 = b1->flags; good_udp1 = (flags1 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0; /* Don't verify UDP checksum for packets with explicit zero checksum. */ good_udp1 |= udp1->checksum == 0; /* Verify UDP length */ if (is_ip4) ip_len1 = clib_net_to_host_u16 (ip41->length); else ip_len1 = clib_net_to_host_u16 (ip61->payload_length); udp_len1 = clib_net_to_host_u16 (udp1->length); len_diff1 = ip_len1 - udp_len1; /* Verify UDP checksum */ if (PREDICT_FALSE (!good_udp1)) { if ((flags1 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0) { if (is_ip4) flags1 = ip4_tcp_udp_validate_checksum (vm, b1); else flags1 = ip6_tcp_udp_icmp_validate_checksum (vm, b1); good_udp1 = (flags1 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0; } } if (is_ip4) { error1 = good_udp1 ? 0 : IP4_ERROR_UDP_CHECKSUM; error1 = (len_diff1 >= 0) ? error1 : IP4_ERROR_UDP_LENGTH; } else { error1 = good_udp1 ? 0 : IP6_ERROR_UDP_CHECKSUM; error1 = (len_diff1 >= 0) ? error1 : IP6_ERROR_UDP_LENGTH; } next1 = error1 ? IP_VXLAN_BYPASS_NEXT_DROP : IP_VXLAN_BYPASS_NEXT_VXLAN; b1->error = error1 ? error_node->errors[error1] : 0; /* vxlan_gpe-input node expect current at VXLAN header */ if (is_ip4) vlib_buffer_advance (b1, sizeof (ip4_header_t) + sizeof (udp_header_t)); else vlib_buffer_advance (b1, sizeof (ip6_header_t) + sizeof (udp_header_t)); exit1: vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next, n_left_to_next, bi0, bi1, next0, next1); } while (n_left_from > 0 && n_left_to_next > 0) { vlib_buffer_t *b0; ip4_header_t *ip40; ip6_header_t *ip60; udp_header_t *udp0; u32 bi0, ip_len0, udp_len0, flags0, next0; i32 len_diff0; u8 error0, good_udp0, proto0; bi0 = to_next[0] = from[0]; from += 1; n_left_from -= 1; to_next += 1; n_left_to_next -= 1; b0 = b[0]; b++; if (is_ip4) ip40 = vlib_buffer_get_current (b0); else ip60 = vlib_buffer_get_current (b0); /* Setup packet for next IP feature */ vnet_feature_next (&next0, b0); if (is_ip4) proto0 = ip40->protocol; else proto0 = ip60->protocol; if (proto0 != IP_PROTOCOL_UDP) goto exit; /* not UDP packet */ if (is_ip4) udp0 = ip4_next_header (ip40); else udp0 = ip6_next_header (ip60); if (udp0->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_VXLAN_GPE)) goto exit; /* not VXLAN packet */ /* Validate DIP against VTEPs */ if (is_ip4) { #ifdef CLIB_HAVE_VEC512 if (!vtep4_check_vector (&ngm->vtep_table, b0, ip40, &last_vtep4, &ngm->vtep4_u512)) #else if (!vtep4_check (&ngm->vtep_table, b0, ip40, &last_vtep4)) #endif goto exit; /* no local VTEP for VXLAN packet */ } else { if (!vtep6_check (&ngm->vtep_table, b0, ip60, &last_vtep6)) goto exit; /* no local VTEP for VXLAN packet */ } flags0 = b0->flags; good_udp0 = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0; /* Don't verify UDP checksum for packets with explicit zero checksum. */ good_udp0 |= udp0->checksum == 0; /* Verify UDP length */ if (is_ip4) ip_len0 = clib_net_to_host_u16 (ip40->length); else ip_len0 = clib_net_to_host_u16 (ip60->payload_length); udp_len0 = clib_net_to_host_u16 (udp0->length); len_diff0 = ip_len0 - udp_len0; /* Verify UDP checksum */ if (PREDICT_FALSE (!good_udp0)) { if ((flags0 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0) { if (is_ip4) flags0 = ip4_tcp_udp_validate_checksum (vm, b0); else flags0 = ip6_tcp_udp_icmp_validate_checksum (vm, b0); good_udp0 = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0; } } if (is_ip4) { error0 = good_udp0 ? 0 : IP4_ERROR_UDP_CHECKSUM; error0 = (len_diff0 >= 0) ? error0 : IP4_ERROR_UDP_LENGTH; } else { error0 = good_udp0 ? 0 : IP6_ERROR_UDP_CHECKSUM; error0 = (len_diff0 >= 0) ? error0 : IP6_ERROR_UDP_LENGTH; } next0 = error0 ? IP_VXLAN_BYPASS_NEXT_DROP : IP_VXLAN_BYPASS_NEXT_VXLAN; b0->error = error0 ? error_node->errors[error0] : 0; /* vxlan_gpe-input node expect current at VXLAN header */ if (is_ip4) vlib_buffer_advance (b0, sizeof (ip4_header_t) + sizeof (udp_header_t)); else vlib_buffer_advance (b0, sizeof (ip6_header_t) + sizeof (udp_header_t)); exit: vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, n_left_to_next, bi0, next0); } vlib_put_next_frame (vm, node, next_index, n_left_to_next); } return frame->n_vectors; } VLIB_NODE_FN (ip4_vxlan_gpe_bypass_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return ip_vxlan_gpe_bypass_inline (vm, node, frame, /* is_ip4 */ 1); } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (ip4_vxlan_gpe_bypass_node) = { .name = "ip4-vxlan-gpe-bypass", .vector_size = sizeof (u32), .n_next_nodes = IP_VXLAN_BYPASS_N_NEXT, .next_nodes = { [IP_VXLAN_BYPASS_NEXT_DROP] = "error-drop", [IP_VXLAN_BYPASS_NEXT_VXLAN] = "vxlan4-gpe-input", }, .format_buffer = format_ip4_header, .format_trace = format_ip4_forward_next_trace, }; /* *INDENT-ON* */ #ifndef CLIB_MARCH_VARIANT /* Dummy init function to get us linked in. */ clib_error_t * ip4_vxlan_gpe_bypass_init (vlib_main_t * vm) { return 0; } VLIB_INIT_FUNCTION (ip4_vxlan_gpe_bypass_init); #endif /* CLIB_MARCH_VARIANT */ VLIB_NODE_FN (ip6_vxlan_gpe_bypass_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return ip_vxlan_gpe_bypass_inline (vm, node, frame, /* is_ip4 */ 0); } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (ip6_vxlan_gpe_bypass_node) = { .name = "ip6-vxlan-gpe-bypass", .vector_size = sizeof (u32), .n_next_nodes = IP_VXLAN_BYPASS_N_NEXT, .next_nodes = { [IP_VXLAN_BYPASS_NEXT_DROP] = "error-drop", [IP_VXLAN_BYPASS_NEXT_VXLAN] = "vxlan6-gpe-input", }, .format_buffer = format_ip6_header, .format_trace = format_ip6_forward_next_trace, }; /* *INDENT-ON* */ #ifndef CLIB_MARCH_VARIANT /* Dummy init function to get us linked in. */ clib_error_t * ip6_vxlan_gpe_bypass_init (vlib_main_t * vm) { return 0; } VLIB_INIT_FUNCTION (ip6_vxlan_gpe_bypass_init); #endif /* CLIB_MARCH_VARIANT */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */


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