diff options
author | Damjan Marion <damarion@cisco.com> | 2016-12-19 23:05:39 +0100 |
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committer | Damjan Marion <damarion@cisco.com> | 2016-12-28 12:25:14 +0100 |
commit | 7cd468a3d7dee7d6c92f69a0bb7061ae208ec727 (patch) | |
tree | 5de62f8dbd3a752f5a676ca600e43d2652d1ff1a /vnet/vnet/vxlan/decap.c | |
parent | 696f1adec0df3b8f161862566dd9c86174302658 (diff) |
Reorganize source tree to use single autotools instance
Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23
Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'vnet/vnet/vxlan/decap.c')
-rw-r--r-- | vnet/vnet/vxlan/decap.c | 1130 |
1 files changed, 0 insertions, 1130 deletions
diff --git a/vnet/vnet/vxlan/decap.c b/vnet/vnet/vxlan/decap.c deleted file mode 100644 index 73e50ffe31f..00000000000 --- a/vnet/vnet/vxlan/decap.c +++ /dev/null @@ -1,1130 +0,0 @@ -/* - * decap.c: vxlan tunnel decap packet processing - * - * 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. - */ - -#include <vlib/vlib.h> -#include <vnet/pg/pg.h> -#include <vnet/vxlan/vxlan.h> - -vlib_node_registration_t vxlan4_input_node; -vlib_node_registration_t vxlan6_input_node; - -typedef struct { - u32 next_index; - u32 tunnel_index; - u32 error; - u32 vni; -} vxlan_rx_trace_t; - -static u8 * format_vxlan_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_rx_trace_t * t = va_arg (*args, vxlan_rx_trace_t *); - - if (t->tunnel_index != ~0) - { - s = format (s, "VXLAN decap from vxlan_tunnel%d vni %d next %d error %d", - t->tunnel_index, t->vni, t->next_index, t->error); - } - else - { - s = format (s, "VXLAN decap error - tunnel for vni %d does not exist", - t->vni); - } - return s; -} - -always_inline uword -vxlan_input (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * from_frame, - u32 is_ip4) -{ - u32 n_left_from, next_index, * from, * to_next; - vxlan_main_t * vxm = &vxlan_main; - vnet_main_t * vnm = vxm->vnet_main; - vnet_interface_main_t * im = &vnm->interface_main; - u32 last_tunnel_index = ~0; - vxlan4_tunnel_key_t last_key4; - vxlan6_tunnel_key_t last_key6; - u32 pkts_decapsulated = 0; - u32 cpu_index = os_get_cpu_number(); - u32 stats_sw_if_index, stats_n_packets, stats_n_bytes; - - if (is_ip4) - last_key4.as_u64 = ~0; - else - 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_header_t * ip4_0, * ip4_1; - ip6_header_t * ip6_0, * ip6_1; - vxlan_header_t * vxlan0, * vxlan1; - uword * p0, * p1; - u32 tunnel_index0, tunnel_index1; - vxlan_tunnel_t * t0, * t1, * mt0 = NULL, * mt1 = NULL; - vxlan4_tunnel_key_t key4_0, key4_1; - vxlan6_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); - - /* udp leaves current_data pointing at the vxlan header */ - vxlan0 = vlib_buffer_get_current (b0); - vxlan1 = vlib_buffer_get_current (b1); - if (is_ip4) { - 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))); - ip4_0 = vlib_buffer_get_current (b0); - ip4_1 = vlib_buffer_get_current (b1); - } else { - 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))); - ip6_0 = vlib_buffer_get_current (b0); - ip6_1 = vlib_buffer_get_current (b1); - } - - /* pop (ip, udp, vxlan) */ - if (is_ip4) { - vlib_buffer_advance - (b0, sizeof(*ip4_0)+sizeof(udp_header_t)+sizeof(*vxlan0)); - vlib_buffer_advance - (b1, sizeof(*ip4_1)+sizeof(udp_header_t)+sizeof(*vxlan1)); - } else { - vlib_buffer_advance - (b0, sizeof(*ip6_0)+sizeof(udp_header_t)+sizeof(*vxlan0)); - vlib_buffer_advance - (b1, sizeof(*ip6_1)+sizeof(udp_header_t)+sizeof(*vxlan1)); - } - - tunnel_index0 = ~0; - error0 = 0; - - tunnel_index1 = ~0; - error1 = 0; - - if (PREDICT_FALSE (vxlan0->flags != VXLAN_FLAGS_I)) - { - error0 = VXLAN_ERROR_BAD_FLAGS; - next0 = VXLAN_INPUT_NEXT_DROP; - goto trace0; - } - - if (is_ip4) { - key4_0.src = ip4_0->src_address.as_u32; - key4_0.vni = vxlan0->vni_reserved; - - /* Make sure VXLAN tunnel exist according to packet SIP and VNI */ - if (PREDICT_FALSE (key4_0.as_u64 != last_key4.as_u64)) - { - p0 = hash_get (vxm->vxlan4_tunnel_by_key, key4_0.as_u64); - if (PREDICT_FALSE (p0 == NULL)) - { - error0 = VXLAN_ERROR_NO_SUCH_TUNNEL; - next0 = VXLAN_INPUT_NEXT_DROP; - goto trace0; - } - last_key4.as_u64 = key4_0.as_u64; - tunnel_index0 = last_tunnel_index = p0[0]; - } - else - tunnel_index0 = last_tunnel_index; - t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0); - - /* Validate VXLAN tunnel SIP against packet DIP */ - if (PREDICT_TRUE (ip4_0->dst_address.as_u32 == t0->src.ip4.as_u32)) - goto next0; /* valid packet */ - if (PREDICT_FALSE (ip4_address_is_multicast (&ip4_0->dst_address))) - { - key4_0.src = ip4_0->dst_address.as_u32; - key4_0.vni = vxlan0->vni_reserved; - /* Make sure mcast VXLAN tunnel exist by packet DIP and VNI */ - p0 = hash_get (vxm->vxlan4_tunnel_by_key, key4_0.as_u64); - if (PREDICT_TRUE (p0 != NULL)) - { - mt0 = pool_elt_at_index (vxm->tunnels, p0[0]); - goto next0; /* valid packet */ - } - } - error0 = VXLAN_ERROR_NO_SUCH_TUNNEL; - next0 = VXLAN_INPUT_NEXT_DROP; - goto trace0; - - } else /* !is_ip4 */ { - key6_0.src.as_u64[0] = ip6_0->src_address.as_u64[0]; - key6_0.src.as_u64[1] = ip6_0->src_address.as_u64[1]; - key6_0.vni = vxlan0->vni_reserved; - - /* Make sure VXLAN tunnel exist according to packet SIP and VNI */ - if (PREDICT_FALSE (memcmp(&key6_0, &last_key6, sizeof(last_key6)) != 0)) - { - p0 = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6_0); - if (PREDICT_FALSE (p0 == NULL)) - { - error0 = VXLAN_ERROR_NO_SUCH_TUNNEL; - next0 = VXLAN_INPUT_NEXT_DROP; - goto trace0; - } - clib_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 (vxm->tunnels, tunnel_index0); - - /* Validate VXLAN tunnel SIP against packet DIP */ - if (PREDICT_TRUE (ip6_address_is_equal (&ip6_0->dst_address, - &t0->src.ip6))) - goto next0; /* valid packet */ - if (PREDICT_FALSE (ip6_address_is_multicast (&ip6_0->dst_address))) - { - key6_0.src.as_u64[0] = ip6_0->dst_address.as_u64[0]; - key6_0.src.as_u64[1] = ip6_0->dst_address.as_u64[1]; - key6_0.vni = vxlan0->vni_reserved; - p0 = hash_get (vxm->vxlan6_tunnel_by_key, &key6_0); - if (PREDICT_TRUE (p0 != NULL)) - { - mt0 = pool_elt_at_index (vxm->tunnels, p0[0]); - goto next0; /* valid packet */ - } - } - error0 = VXLAN_ERROR_NO_SUCH_TUNNEL; - next0 = VXLAN_INPUT_NEXT_DROP; - goto trace0; - } - - next0: - next0 = t0->decap_next_index; - 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 */ - if (PREDICT_TRUE(next0 == VXLAN_INPUT_NEXT_L2_INPUT)) - 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] = sw_if_index0; - sw_if_index0 = (mt0) ? mt0->sw_if_index : sw_if_index0; - - pkts_decapsulated ++; - stats_n_packets += 1; - stats_n_bytes += len0; - - /* Batch stats increment on the same vxlan 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, - cpu_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_rx_trace_t *tr - = vlib_add_trace (vm, node, b0, sizeof (*tr)); - tr->next_index = next0; - tr->error = error0; - tr->tunnel_index = tunnel_index0; - tr->vni = vnet_get_vni (vxlan0); - } - - if (PREDICT_FALSE (vxlan1->flags != VXLAN_FLAGS_I)) - { - error1 = VXLAN_ERROR_BAD_FLAGS; - next1 = VXLAN_INPUT_NEXT_DROP; - goto trace1; - } - - if (is_ip4) { - key4_1.src = ip4_1->src_address.as_u32; - key4_1.vni = vxlan1->vni_reserved; - - /* Make sure unicast VXLAN tunnel exist by packet SIP and VNI */ - if (PREDICT_FALSE (key4_1.as_u64 != last_key4.as_u64)) - { - p1 = hash_get (vxm->vxlan4_tunnel_by_key, key4_1.as_u64); - if (PREDICT_FALSE (p1 == NULL)) - { - error1 = VXLAN_ERROR_NO_SUCH_TUNNEL; - next1 = VXLAN_INPUT_NEXT_DROP; - goto trace1; - } - last_key4.as_u64 = key4_1.as_u64; - tunnel_index1 = last_tunnel_index = p1[0]; - } - else - tunnel_index1 = last_tunnel_index; - t1 = pool_elt_at_index (vxm->tunnels, tunnel_index1); - - /* Validate VXLAN tunnel SIP against packet DIP */ - if (PREDICT_TRUE (ip4_1->dst_address.as_u32 == t1->src.ip4.as_u32)) - goto next1; /* valid packet */ - if (PREDICT_FALSE (ip4_address_is_multicast (&ip4_1->dst_address))) - { - key4_1.src = ip4_1->dst_address.as_u32; - key4_1.vni = vxlan1->vni_reserved; - /* Make sure mcast VXLAN tunnel exist by packet DIP and VNI */ - p1 = hash_get (vxm->vxlan4_tunnel_by_key, key4_1.as_u64); - if (PREDICT_TRUE (p1 != NULL)) - { - mt1 = pool_elt_at_index (vxm->tunnels, p1[0]); - goto next1; /* valid packet */ - } - } - error1 = VXLAN_ERROR_NO_SUCH_TUNNEL; - next1 = VXLAN_INPUT_NEXT_DROP; - goto trace1; - - } else /* !is_ip4 */ { - key6_1.src.as_u64[0] = ip6_1->src_address.as_u64[0]; - key6_1.src.as_u64[1] = ip6_1->src_address.as_u64[1]; - key6_1.vni = vxlan1->vni_reserved; - - /* Make sure VXLAN tunnel exist according to packet SIP and VNI */ - if (PREDICT_FALSE (memcmp(&key6_1, &last_key6, sizeof(last_key6)) != 0)) - { - p1 = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6_1); - - if (PREDICT_FALSE (p1 == NULL)) - { - error1 = VXLAN_ERROR_NO_SUCH_TUNNEL; - next1 = VXLAN_INPUT_NEXT_DROP; - goto trace1; - } - - clib_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 (vxm->tunnels, tunnel_index1); - - /* Validate VXLAN tunnel SIP against packet DIP */ - if (PREDICT_TRUE (ip6_address_is_equal (&ip6_1->dst_address, - &t1->src.ip6))) - goto next1; /* valid packet */ - if (PREDICT_FALSE (ip6_address_is_multicast (&ip6_1->dst_address))) - { - key6_1.src.as_u64[0] = ip6_1->dst_address.as_u64[0]; - key6_1.src.as_u64[1] = ip6_1->dst_address.as_u64[1]; - key6_1.vni = vxlan1->vni_reserved; - p1 = hash_get (vxm->vxlan6_tunnel_by_key, &key6_1); - if (PREDICT_TRUE (p1 != NULL)) - { - mt1 = pool_elt_at_index (vxm->tunnels, p1[0]); - goto next1; /* valid packet */ - } - } - error1 = VXLAN_ERROR_NO_SUCH_TUNNEL; - next1 = VXLAN_INPUT_NEXT_DROP; - goto trace1; - } - - next1: - next1 = t1->decap_next_index; - 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 */ - if (PREDICT_TRUE(next1 == VXLAN_INPUT_NEXT_L2_INPUT)) - 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] = sw_if_index1; - sw_if_index1 = (mt1) ? mt1->sw_if_index : sw_if_index1; - - 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, - cpu_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; - } - - trace1: - b1->error = error1 ? node->errors[error1] : 0; - - if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED)) - { - vxlan_rx_trace_t *tr - = vlib_add_trace (vm, node, b1, sizeof (*tr)); - tr->next_index = next1; - tr->error = error1; - tr->tunnel_index = tunnel_index1; - tr->vni = vnet_get_vni (vxlan1); - } - - 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_header_t * ip4_0; - ip6_header_t * ip6_0; - vxlan_header_t * vxlan0; - uword * p0; - u32 tunnel_index0; - vxlan_tunnel_t * t0, * mt0 = NULL; - vxlan4_tunnel_key_t key4_0; - vxlan6_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); - - /* udp leaves current_data pointing at the vxlan header */ - vxlan0 = vlib_buffer_get_current (b0); - if (is_ip4) { - vlib_buffer_advance - (b0, -(word)(sizeof(udp_header_t)+sizeof(ip4_header_t))); - ip4_0 = vlib_buffer_get_current (b0); - } else { - vlib_buffer_advance - (b0, -(word)(sizeof(udp_header_t)+sizeof(ip6_header_t))); - ip6_0 = vlib_buffer_get_current (b0); - } - - /* pop (ip, udp, vxlan) */ - if (is_ip4) { - vlib_buffer_advance - (b0, sizeof(*ip4_0)+sizeof(udp_header_t)+sizeof(*vxlan0)); - } else { - vlib_buffer_advance - (b0, sizeof(*ip6_0)+sizeof(udp_header_t)+sizeof(*vxlan0)); - } - - tunnel_index0 = ~0; - error0 = 0; - - if (PREDICT_FALSE (vxlan0->flags != VXLAN_FLAGS_I)) - { - error0 = VXLAN_ERROR_BAD_FLAGS; - next0 = VXLAN_INPUT_NEXT_DROP; - goto trace00; - } - - if (is_ip4) { - key4_0.src = ip4_0->src_address.as_u32; - key4_0.vni = vxlan0->vni_reserved; - - /* Make sure unicast VXLAN tunnel exist by packet SIP and VNI */ - if (PREDICT_FALSE (key4_0.as_u64 != last_key4.as_u64)) - { - p0 = hash_get (vxm->vxlan4_tunnel_by_key, key4_0.as_u64); - if (PREDICT_FALSE (p0 == NULL)) - { - error0 = VXLAN_ERROR_NO_SUCH_TUNNEL; - next0 = VXLAN_INPUT_NEXT_DROP; - goto trace00; - } - last_key4.as_u64 = key4_0.as_u64; - tunnel_index0 = last_tunnel_index = p0[0]; - } - else - tunnel_index0 = last_tunnel_index; - t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0); - - /* Validate VXLAN tunnel SIP against packet DIP */ - if (PREDICT_TRUE (ip4_0->dst_address.as_u32 == t0->src.ip4.as_u32)) - goto next00; /* valid packet */ - if (PREDICT_FALSE (ip4_address_is_multicast (&ip4_0->dst_address))) - { - key4_0.src = ip4_0->dst_address.as_u32; - key4_0.vni = vxlan0->vni_reserved; - /* Make sure mcast VXLAN tunnel exist by packet DIP and VNI */ - p0 = hash_get (vxm->vxlan4_tunnel_by_key, key4_0.as_u64); - if (PREDICT_TRUE (p0 != NULL)) - { - mt0 = pool_elt_at_index (vxm->tunnels, p0[0]); - goto next00; /* valid packet */ - } - } - error0 = VXLAN_ERROR_NO_SUCH_TUNNEL; - next0 = VXLAN_INPUT_NEXT_DROP; - goto trace00; - - } else /* !is_ip4 */ { - key6_0.src.as_u64[0] = ip6_0->src_address.as_u64[0]; - key6_0.src.as_u64[1] = ip6_0->src_address.as_u64[1]; - key6_0.vni = vxlan0->vni_reserved; - - /* Make sure VXLAN tunnel exist according to packet SIP and VNI */ - if (PREDICT_FALSE (memcmp(&key6_0, &last_key6, sizeof(last_key6)) != 0)) - { - p0 = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6_0); - if (PREDICT_FALSE (p0 == NULL)) - { - error0 = VXLAN_ERROR_NO_SUCH_TUNNEL; - next0 = VXLAN_INPUT_NEXT_DROP; - goto trace00; - } - clib_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 (vxm->tunnels, tunnel_index0); - - /* Validate VXLAN tunnel SIP against packet DIP */ - if (PREDICT_TRUE (ip6_address_is_equal (&ip6_0->dst_address, - &t0->src.ip6))) - goto next00; /* valid packet */ - if (PREDICT_FALSE (ip6_address_is_multicast (&ip6_0->dst_address))) - { - key6_0.src.as_u64[0] = ip6_0->dst_address.as_u64[0]; - key6_0.src.as_u64[1] = ip6_0->dst_address.as_u64[1]; - key6_0.vni = vxlan0->vni_reserved; - p0 = hash_get (vxm->vxlan6_tunnel_by_key, &key6_0); - if (PREDICT_TRUE (p0 != NULL)) - { - mt0 = pool_elt_at_index (vxm->tunnels, p0[0]); - goto next00; /* valid packet */ - } - } - error0 = VXLAN_ERROR_NO_SUCH_TUNNEL; - next0 = VXLAN_INPUT_NEXT_DROP; - goto trace00; - } - - next00: - next0 = t0->decap_next_index; - 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 */ - if (PREDICT_TRUE(next0 == VXLAN_INPUT_NEXT_L2_INPUT)) - 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] = sw_if_index0; - sw_if_index0 = (mt0) ? mt0->sw_if_index : sw_if_index0; - - pkts_decapsulated ++; - stats_n_packets += 1; - stats_n_bytes += len0; - - /* Batch stats increment on the same vxlan 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, - cpu_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_rx_trace_t *tr - = vlib_add_trace (vm, node, b0, sizeof (*tr)); - tr->next_index = next0; - tr->error = error0; - tr->tunnel_index = tunnel_index0; - tr->vni = vnet_get_vni (vxlan0); - } - 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); - } - /* Do we still need this now that tunnel tx stats is kept? */ - vlib_node_increment_counter (vm, is_ip4? - vxlan4_input_node.index:vxlan6_input_node.index, - VXLAN_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, - cpu_index, stats_sw_if_index, stats_n_packets, stats_n_bytes); - node->runtime_data[0] = stats_sw_if_index; - } - - return from_frame->n_vectors; -} - -static uword -vxlan4_input (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * from_frame) -{ - return vxlan_input(vm, node, from_frame, /* is_ip4 */ 1); -} - -static uword -vxlan6_input (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * from_frame) -{ - return vxlan_input(vm, node, from_frame, /* is_ip4 */ 0); -} - -static char * vxlan_error_strings[] = { -#define vxlan_error(n,s) s, -#include <vnet/vxlan/vxlan_error.def> -#undef vxlan_error -#undef _ -}; - -VLIB_REGISTER_NODE (vxlan4_input_node) = { - .function = vxlan4_input, - .name = "vxlan4-input", - /* Takes a vector of packets. */ - .vector_size = sizeof (u32), - - .n_errors = VXLAN_N_ERROR, - .error_strings = vxlan_error_strings, - - .n_next_nodes = VXLAN_INPUT_N_NEXT, - .next_nodes = { -#define _(s,n) [VXLAN_INPUT_NEXT_##s] = n, - foreach_vxlan_input_next -#undef _ - }, - -//temp .format_buffer = format_vxlan_header, - .format_trace = format_vxlan_rx_trace, - // $$$$ .unformat_buffer = unformat_vxlan_header, -}; - -VLIB_NODE_FUNCTION_MULTIARCH (vxlan4_input_node, vxlan4_input) - -VLIB_REGISTER_NODE (vxlan6_input_node) = { - .function = vxlan6_input, - .name = "vxlan6-input", - /* Takes a vector of packets. */ - .vector_size = sizeof (u32), - - .n_errors = VXLAN_N_ERROR, - .error_strings = vxlan_error_strings, - - .n_next_nodes = VXLAN_INPUT_N_NEXT, - .next_nodes = { -#define _(s,n) [VXLAN_INPUT_NEXT_##s] = n, - foreach_vxlan_input_next -#undef _ - }, - -//temp .format_buffer = format_vxlan_header, - .format_trace = format_vxlan_rx_trace, - // $$$$ .unformat_buffer = unformat_vxlan_header, -}; - -VLIB_NODE_FUNCTION_MULTIARCH (vxlan6_input_node, vxlan6_input) - - -typedef enum { - IP_VXLAN_BYPASS_NEXT_DROP, - IP_VXLAN_BYPASS_NEXT_VXLAN, - IP_VXLAN_BYPASS_N_NEXT, -} ip_vxan_bypass_next_t; - -always_inline uword -ip_vxlan_bypass_inline (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame, - u32 is_ip4) -{ - vxlan_main_t * vxm = &vxlan_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); - ip4_address_t addr4; /* last IPv4 address matching a local VTEP address */ - ip6_address_t addr6; /* last IPv6 address matching a local VTEP address */ - - from = vlib_frame_vector_args (frame); - n_left_from = frame->n_vectors; - next_index = node->cached_next_index; - - if (node->flags & VLIB_NODE_FLAG_TRACE) - ip4_forward_next_trace (vm, node, frame, VLIB_TX); - - if (is_ip4) addr4.data_u32 = ~0; - else ip6_address_set_zero (&addr6); - - 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 * ip0, * ip1; - 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_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 = 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 = vlib_get_buffer (vm, bi0); - b1 = vlib_get_buffer (vm, bi1); - ip0 = vlib_buffer_get_current (b0); - ip1 = vlib_buffer_get_current (b1); - - /* Setup packet for next IP feature */ - vnet_feature_next(vnet_buffer(b0)->sw_if_index[VLIB_RX], &next0, b0); - vnet_feature_next(vnet_buffer(b1)->sw_if_index[VLIB_RX], &next1, b1); - - /* Treat IP frag packets as "experimental" protocol for now - until support of IP frag reassembly is implemented */ - proto0 = ip4_is_fragment(ip0) ? 0xfe : ip0->protocol; - proto1 = ip4_is_fragment(ip1) ? 0xfe : ip1->protocol; - - /* Process packet 0 */ - if (proto0 != IP_PROTOCOL_UDP) - goto exit0; /* not UDP packet */ - - udp0 = ip4_next_header (ip0); - if (udp0->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_vxlan)) - goto exit0; /* not VXLAN packet */ - - if (is_ip4) - { - if (addr4.as_u32 != ip0->dst_address.as_u32) - { - if (!hash_get (vxm->vtep4, ip0->dst_address.as_u32)) - goto exit0; /* no local VTEP for VXLAN packet */ - addr4 = ip0->dst_address; - } - } - else goto exit0; /* IP6 VXLAN bypass not yet supported */ - - /* vxlan-input node expect current at VXLAN header */ - vlib_buffer_advance (b0, sizeof(ip4_header_t)+sizeof(udp_header_t)); - - flags0 = b0->flags; - good_udp0 = (flags0 & IP_BUFFER_L4_CHECKSUM_CORRECT) != 0; - - /* Don't verify UDP checksum for packets with explicit zero checksum. */ - good_udp0 |= udp0->checksum == 0; - - /* Verify UDP length */ - ip_len0 = clib_net_to_host_u16 (ip0->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 & IP_BUFFER_L4_CHECKSUM_COMPUTED)) - flags0 = ip4_tcp_udp_validate_checksum (vm, b0); - good_udp0 = - (flags0 & IP_BUFFER_L4_CHECKSUM_CORRECT) != 0; - } - - error0 = good_udp0 ? 0 : IP4_ERROR_UDP_CHECKSUM; - error0 = (len_diff0 >= 0) ? error0 : IP4_ERROR_UDP_LENGTH; - - next0 = error0 ? - IP_VXLAN_BYPASS_NEXT_DROP : IP_VXLAN_BYPASS_NEXT_VXLAN; - b0->error = error0 ? error_node->errors[error0] : 0; - - exit0: - /* Process packet 1 */ - if (proto1 != IP_PROTOCOL_UDP) - goto exit1; /* not UDP packet */ - - udp1 = ip4_next_header (ip1); - if (udp1->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_vxlan)) - goto exit1; /* not VXLAN packet */ - - if (is_ip4) - { - if (addr4.as_u32 != ip1->dst_address.as_u32) - { - if (!hash_get (vxm->vtep4, ip1->dst_address.as_u32)) - goto exit1; /* no local VTEP for VXLAN packet */ - addr4 = ip1->dst_address; - } - } - else goto exit1; /* IP6 VXLAN bypass not yet supported */ - - /* vxlan-input node expect current at VXLAN header */ - vlib_buffer_advance (b1, sizeof(ip4_header_t)+sizeof(udp_header_t)); - - flags1 = b1->flags; - good_udp1 = (flags1 & IP_BUFFER_L4_CHECKSUM_CORRECT) != 0; - - /* Don't verify UDP checksum for packets with explicit zero checksum. */ - good_udp1 |= udp1->checksum == 0; - - /* Verify UDP length */ - ip_len1 = clib_net_to_host_u16 (ip1->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 & IP_BUFFER_L4_CHECKSUM_COMPUTED)) - flags1 = ip4_tcp_udp_validate_checksum (vm, b1); - good_udp1 = - (flags1 & IP_BUFFER_L4_CHECKSUM_CORRECT) != 0; - } - - error1 = good_udp1 ? 0 : IP4_ERROR_UDP_CHECKSUM; - error1 = (len_diff1 >= 0) ? error1 : IP4_ERROR_UDP_LENGTH; - - next1 = error1 ? - IP_VXLAN_BYPASS_NEXT_DROP : IP_VXLAN_BYPASS_NEXT_VXLAN; - b1->error = error1 ? error_node->errors[error1] : 0; - - 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 * ip0; - 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 = vlib_get_buffer (vm, bi0); - ip0 = vlib_buffer_get_current (b0); - - /* Setup packet for next IP feature */ - vnet_feature_next(vnet_buffer(b0)->sw_if_index[VLIB_RX], &next0, b0); - - /* Treat IP frag packets as "experimental" protocol for now - until support of IP frag reassembly is implemented */ - proto0 = ip4_is_fragment(ip0) ? 0xfe : ip0->protocol; - - if (proto0 != IP_PROTOCOL_UDP) - goto exit; /* not UDP packet */ - - udp0 = ip4_next_header (ip0); - if (udp0->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_vxlan)) - goto exit; /* not VXLAN packet */ - - if (is_ip4) - { - if (addr4.as_u32 != ip0->dst_address.as_u32) - { - if (!hash_get (vxm->vtep4, ip0->dst_address.as_u32)) - goto exit; /* no local VTEP for VXLAN packet */ - addr4 = ip0->dst_address; - } - } - else goto exit; /* IP6 VXLAN bypass not yet supported */ - - /* vxlan-input node expect current at VXLAN header */ - vlib_buffer_advance (b0, sizeof(ip4_header_t)+sizeof(udp_header_t)); - - flags0 = b0->flags; - good_udp0 = (flags0 & IP_BUFFER_L4_CHECKSUM_CORRECT) != 0; - - /* Don't verify UDP checksum for packets with explicit zero checksum. */ - good_udp0 |= udp0->checksum == 0; - - /* Verify UDP length */ - ip_len0 = clib_net_to_host_u16 (ip0->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 & IP_BUFFER_L4_CHECKSUM_COMPUTED)) - flags0 = ip4_tcp_udp_validate_checksum (vm, b0); - good_udp0 = - (flags0 & IP_BUFFER_L4_CHECKSUM_CORRECT) != 0; - } - - error0 = good_udp0 ? 0 : IP4_ERROR_UDP_CHECKSUM; - error0 = (len_diff0 >= 0) ? error0 : IP4_ERROR_UDP_LENGTH; - - next0 = error0 ? - IP_VXLAN_BYPASS_NEXT_DROP : IP_VXLAN_BYPASS_NEXT_VXLAN; - b0->error = error0 ? error_node->errors[error0] : 0; - - 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; -} - -static uword -ip4_vxlan_bypass (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame) -{ - return ip_vxlan_bypass_inline (vm, node, frame, /* is_ip4 */ 1); -} - -VLIB_REGISTER_NODE (ip4_vxlan_bypass_node) = { - .function = ip4_vxlan_bypass, - .name = "ip4-vxlan-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-input", - }, - - .format_buffer = format_ip4_header, - .format_trace = format_ip4_forward_next_trace, -}; - -VLIB_NODE_FUNCTION_MULTIARCH (ip4_vxlan_bypass_node,ip4_vxlan_bypass) - - -static clib_error_t * -set_ip_vxlan_bypass (vlib_main_t * vm, - unformat_input_t * input, - vlib_cli_command_t * cmd) -{ - unformat_input_t _line_input, * line_input = &_line_input; - vnet_main_t * vnm = vnet_get_main(); - clib_error_t * error = 0; - u32 sw_if_index, is_del; - - sw_if_index = ~0; - is_del = 0; - - if (! unformat_user (input, unformat_line_input, line_input)) - return 0; - - while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) - { - if (unformat_user (line_input, unformat_vnet_sw_interface, vnm, &sw_if_index)) - ; - else if (unformat (line_input, "del")) - is_del = 1; - else - { - error = unformat_parse_error (line_input); - goto done; - } - } - - if (~0 == sw_if_index) - { - error = clib_error_return (0, "unknown interface `%U'", - format_unformat_error, line_input); - goto done; - } - - vnet_feature_enable_disable ("ip4-unicast", "ip4-vxlan-bypass", sw_if_index, - is_del == 0, 0, 0); - done: - return error; -} - -/*? - * This command adds the 'ip4-vxlan-bypass' graph node for a given interface. - * By adding the IPv4 vxlan-bypass graph node to an interface, the node checks - * for and validate input vxlan packet and bypass ip4-lookup, ip4-local, - * ip4-udp-lookup nodes to speedup vxlan packet forwarding. This node will - * cause extra overhead to for non-vxlan packets which is kept at a minimum. - * - * @cliexpar - * @parblock - * Example of graph node before ip4-vxlan-bypass is enabled: - * @cliexstart{show vlib graph ip4-vxlan-bypass} - * Name Next Previous - * ip4-vxlan-bypass error-drop [0] - * vxlan4-input [1] - * ip4-lookup [2] - * @cliexend - * - * Example of how to enable ip4-vxlan-bypass on an interface: - * @cliexcmd{set interface ip vxlan-bypass GigabitEthernet2/0/0} - * - * Example of graph node after ip4-vxlan-bypass is enabled: - * @cliexstart{show vlib graph ip4-vxlan-bypass} - * Name Next Previous - * ip4-vxlan-bypass error-drop [0] ip4-input - * vxlan4-input [1] ip4-input-no-checksum - * ip4-lookup [2] - * @cliexend - * - * Example of how to display the feature enabed on an interface: - * @cliexstart{show ip interface features GigabitEthernet2/0/0} - * IP feature paths configured on GigabitEthernet2/0/0... - * - * ipv4 unicast: - * ip4-vxlan-bypass - * ip4-lookup - * - * ipv4 multicast: - * ip4-lookup-multicast - * - * ipv4 multicast: - * interface-output - * - * ipv6 unicast: - * ip6-lookup - * - * ipv6 multicast: - * ip6-lookup - * - * ipv6 multicast: - * interface-output - * @cliexend - * - * Example of how to disable unicast source checking on an interface: - * @cliexcmd{set interface ip vxlan-bypass GigabitEthernet2/0/0 del} - * @endparblock -?*/ -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (set_interface_ip_vxlan_bypass_command, static) = { - .path = "set interface ip vxlan-bypass", - .function = set_ip_vxlan_bypass, - .short_help = "set interface ip vxlan-bypass <interface> [del]", -}; - -/* Dummy init function to get us linked in. */ -clib_error_t * ip4_vxlan_bypass_init (vlib_main_t * vm) -{ return 0; } - -VLIB_INIT_FUNCTION (ip4_vxlan_bypass_init); |