diff options
Diffstat (limited to 'src/vnet/geneve/decap.c')
| -rw-r--r-- | src/vnet/geneve/decap.c | 1303 |
1 files changed, 0 insertions, 1303 deletions
diff --git a/src/vnet/geneve/decap.c b/src/vnet/geneve/decap.c deleted file mode 100644 index b570e3512c4..00000000000 --- a/src/vnet/geneve/decap.c +++ /dev/null @@ -1,1303 +0,0 @@ -/* - * Copyright (c) 2017 SUSE LLC. - * 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/geneve/geneve.h> - -typedef struct -{ - u32 next_index; - u32 tunnel_index; - u32 error; - u32 vni_rsvd; -} geneve_rx_trace_t; - -static u8 * -format_geneve_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 *); - geneve_rx_trace_t *t = va_arg (*args, geneve_rx_trace_t *); - - if (t->tunnel_index != ~0) - { - s = - format (s, - "GENEVE decap from geneve_tunnel%d vni %d next %d error %d", - t->tunnel_index, t->vni_rsvd, t->next_index, t->error); - } - else - { - s = format (s, "GENEVE decap error - tunnel for vni %d does not exist", - t->vni_rsvd); - } - return s; -} - -always_inline u32 -validate_geneve_fib (vlib_buffer_t * b, geneve_tunnel_t * t, u32 is_ip4) -{ - u32 fib_index, sw_if_index; - - sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX]; - - if (is_ip4) - fib_index = (vnet_buffer (b)->sw_if_index[VLIB_TX] == (u32) ~ 0) ? - vec_elt (ip4_main.fib_index_by_sw_if_index, sw_if_index) : - vnet_buffer (b)->sw_if_index[VLIB_TX]; - else - fib_index = (vnet_buffer (b)->sw_if_index[VLIB_TX] == (u32) ~ 0) ? - vec_elt (ip6_main.fib_index_by_sw_if_index, sw_if_index) : - vnet_buffer (b)->sw_if_index[VLIB_TX]; - - return (fib_index == t->encap_fib_index); -} - -always_inline uword -geneve_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; - geneve_main_t *vxm = &geneve_main; - vnet_main_t *vnm = vxm->vnet_main; - vnet_interface_main_t *im = &vnm->interface_main; - u32 last_tunnel_index = ~0; - geneve4_tunnel_key_t last_key4; - geneve6_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; - vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs; - - if (is_ip4) - last_key4.as_u64 = ~0; - else - clib_memset (&last_key6, 0xff, sizeof (last_key6)); - - from = vlib_frame_vector_args (from_frame); - n_left_from = from_frame->n_vectors; - vlib_get_buffers (vm, from, bufs, n_left_from); - - 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; - geneve_header_t *geneve0, *geneve1; - uword *p0, *p1; - u32 tunnel_index0, tunnel_index1; - geneve_tunnel_t *t0, *t1, *mt0 = NULL, *mt1 = NULL; - geneve4_tunnel_key_t key4_0, key4_1; - geneve6_tunnel_key_t key6_0, key6_1; - u32 error0, error1; - u32 sw_if_index0, sw_if_index1, len0, len1; - - /* 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 = 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 = b[0]; - b1 = b[1]; - b += 2; - - /* udp leaves current_data pointing at the geneve header */ - geneve0 = vlib_buffer_get_current (b0); - geneve1 = vlib_buffer_get_current (b1); - - vnet_geneve_hdr_1word_ntoh (geneve0); - vnet_geneve_hdr_1word_ntoh (geneve1); - - 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, geneve) */ - if (is_ip4) - { - vlib_buffer_advance (b0, - sizeof (*ip4_0) + sizeof (udp_header_t) + - GENEVE_BASE_HEADER_LENGTH + - vnet_get_geneve_options_len (geneve0)); - vlib_buffer_advance (b1, - sizeof (*ip4_1) + sizeof (udp_header_t) + - GENEVE_BASE_HEADER_LENGTH + - vnet_get_geneve_options_len (geneve1)); - } - else - { - vlib_buffer_advance (b0, - sizeof (*ip6_0) + sizeof (udp_header_t) + - GENEVE_BASE_HEADER_LENGTH + - vnet_get_geneve_options_len (geneve0)); - vlib_buffer_advance (b1, - sizeof (*ip6_1) + sizeof (udp_header_t) + - GENEVE_BASE_HEADER_LENGTH + - vnet_get_geneve_options_len (geneve1)); - } - - tunnel_index0 = ~0; - error0 = 0; - - tunnel_index1 = ~0; - error1 = 0; - - if (PREDICT_FALSE - (vnet_get_geneve_version (geneve0) != GENEVE_VERSION)) - { - error0 = GENEVE_ERROR_BAD_FLAGS; - next0 = GENEVE_INPUT_NEXT_DROP; - goto trace0; - } -#if SUPPORT_OPTIONS_HEADER==1 - if (PREDICT_FALSE (vnet_get_geneve_critical_bit (geneve0) == 1)) - { - error0 = GENEVE_ERROR_BAD_FLAGS; - next0 = GENEVE_INPUT_NEXT_DROP; - goto trace0; - } -#endif - if (is_ip4) - { - key4_0.remote = ip4_0->src_address.as_u32; - key4_0.vni = vnet_get_geneve_vni_network_order (geneve0); - - /* Make sure GENEVE tunnel exist according to packet SIP and VNI */ - if (PREDICT_FALSE (key4_0.as_u64 != last_key4.as_u64)) - { - p0 = hash_get (vxm->geneve4_tunnel_by_key, key4_0.as_u64); - if (PREDICT_FALSE (p0 == NULL)) - { - error0 = GENEVE_ERROR_NO_SUCH_TUNNEL; - next0 = GENEVE_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 GENEVE tunnel encap-fib index against packet */ - if (PREDICT_FALSE (validate_geneve_fib (b0, t0, is_ip4) == 0)) - { - error0 = GENEVE_ERROR_NO_SUCH_TUNNEL; - next0 = GENEVE_INPUT_NEXT_DROP; - goto trace0; - } - - /* Validate GENEVE tunnel SIP against packet DIP */ - if (PREDICT_TRUE - (ip4_0->dst_address.as_u32 == t0->local.ip4.as_u32)) - goto next0; /* valid packet */ - if (PREDICT_FALSE - (ip4_address_is_multicast (&ip4_0->dst_address))) - { - key4_0.remote = ip4_0->dst_address.as_u32; - key4_0.vni = vnet_get_geneve_vni_network_order (geneve0); - /* Make sure mcast GENEVE tunnel exist by packet DIP and VNI */ - p0 = hash_get (vxm->geneve4_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 = GENEVE_ERROR_NO_SUCH_TUNNEL; - next0 = GENEVE_INPUT_NEXT_DROP; - goto trace0; - - } - else /* !is_ip4 */ - { - key6_0.remote.as_u64[0] = ip6_0->src_address.as_u64[0]; - key6_0.remote.as_u64[1] = ip6_0->src_address.as_u64[1]; - key6_0.vni = vnet_get_geneve_vni_network_order (geneve0); - - /* Make sure GENEVE 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->geneve6_tunnel_by_key, &key6_0); - if (PREDICT_FALSE (p0 == NULL)) - { - error0 = GENEVE_ERROR_NO_SUCH_TUNNEL; - next0 = GENEVE_INPUT_NEXT_DROP; - goto trace0; - } - clib_memcpy_fast (&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 GENEVE tunnel encap-fib index against packet */ - if (PREDICT_FALSE (validate_geneve_fib (b0, t0, is_ip4) == 0)) - { - error0 = GENEVE_ERROR_NO_SUCH_TUNNEL; - next0 = GENEVE_INPUT_NEXT_DROP; - goto trace0; - } - - /* Validate GENEVE tunnel SIP against packet DIP */ - if (PREDICT_TRUE (ip6_address_is_equal (&ip6_0->dst_address, - &t0->local.ip6))) - goto next0; /* valid packet */ - if (PREDICT_FALSE - (ip6_address_is_multicast (&ip6_0->dst_address))) - { - key6_0.remote.as_u64[0] = ip6_0->dst_address.as_u64[0]; - key6_0.remote.as_u64[1] = ip6_0->dst_address.as_u64[1]; - key6_0.vni = vnet_get_geneve_vni_network_order (geneve0); - p0 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_0); - if (PREDICT_TRUE (p0 != NULL)) - { - mt0 = pool_elt_at_index (vxm->tunnels, p0[0]); - goto next0; /* valid packet */ - } - } - error0 = GENEVE_ERROR_NO_SUCH_TUNNEL; - next0 = GENEVE_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 == GENEVE_INPUT_NEXT_L2_INPUT)) - vnet_update_l2_len (b0); - - /* Set packet input sw_if_index to unicast GENEVE 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 geneve 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; - } - - trace0: - b0->error = error0 ? node->errors[error0] : 0; - - if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) - { - geneve_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_rsvd = vnet_get_geneve_vni (geneve0); - } - - if (PREDICT_FALSE - (vnet_get_geneve_version (geneve1) != GENEVE_VERSION)) - { - error1 = GENEVE_ERROR_BAD_FLAGS; - next1 = GENEVE_INPUT_NEXT_DROP; - goto trace1; - } -#if SUPPORT_OPTIONS_HEADER==1 - if (PREDICT_FALSE (vnet_get_geneve_critical_bit (geneve1) == 1)) - { - error1 = GENEVE_ERROR_BAD_FLAGS; - next1 = GENEVE_INPUT_NEXT_DROP; - goto trace1; - } -#endif - if (is_ip4) - { - key4_1.remote = ip4_1->src_address.as_u32; - key4_1.vni = vnet_get_geneve_vni_network_order (geneve1); - - /* Make sure unicast GENEVE tunnel exist by packet SIP and VNI */ - if (PREDICT_FALSE (key4_1.as_u64 != last_key4.as_u64)) - { - p1 = hash_get (vxm->geneve4_tunnel_by_key, key4_1.as_u64); - if (PREDICT_FALSE (p1 == NULL)) - { - error1 = GENEVE_ERROR_NO_SUCH_TUNNEL; - next1 = GENEVE_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 GENEVE tunnel encap-fib index against packet */ - if (PREDICT_FALSE (validate_geneve_fib (b1, t1, is_ip4) == 0)) - { - error1 = GENEVE_ERROR_NO_SUCH_TUNNEL; - next1 = GENEVE_INPUT_NEXT_DROP; - goto trace1; - } - - /* Validate GENEVE tunnel SIP against packet DIP */ - if (PREDICT_TRUE - (ip4_1->dst_address.as_u32 == t1->local.ip4.as_u32)) - goto next1; /* valid packet */ - if (PREDICT_FALSE - (ip4_address_is_multicast (&ip4_1->dst_address))) - { - key4_1.remote = ip4_1->dst_address.as_u32; - key4_1.vni = vnet_get_geneve_vni_network_order (geneve1); - /* Make sure mcast GENEVE tunnel exist by packet DIP and VNI */ - p1 = hash_get (vxm->geneve4_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 = GENEVE_ERROR_NO_SUCH_TUNNEL; - next1 = GENEVE_INPUT_NEXT_DROP; - goto trace1; - - } - else /* !is_ip4 */ - { - key6_1.remote.as_u64[0] = ip6_1->src_address.as_u64[0]; - key6_1.remote.as_u64[1] = ip6_1->src_address.as_u64[1]; - key6_1.vni = vnet_get_geneve_vni_network_order (geneve1); - - /* Make sure GENEVE 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->geneve6_tunnel_by_key, &key6_1); - - if (PREDICT_FALSE (p1 == NULL)) - { - error1 = GENEVE_ERROR_NO_SUCH_TUNNEL; - next1 = GENEVE_INPUT_NEXT_DROP; - goto trace1; - } - - clib_memcpy_fast (&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 GENEVE tunnel encap-fib index against packet */ - if (PREDICT_FALSE (validate_geneve_fib (b1, t1, is_ip4) == 0)) - { - error1 = GENEVE_ERROR_NO_SUCH_TUNNEL; - next1 = GENEVE_INPUT_NEXT_DROP; - goto trace1; - } - - /* Validate GENEVE tunnel SIP against packet DIP */ - if (PREDICT_TRUE (ip6_address_is_equal (&ip6_1->dst_address, - &t1->local.ip6))) - goto next1; /* valid packet */ - if (PREDICT_FALSE - (ip6_address_is_multicast (&ip6_1->dst_address))) - { - key6_1.remote.as_u64[0] = ip6_1->dst_address.as_u64[0]; - key6_1.remote.as_u64[1] = ip6_1->dst_address.as_u64[1]; - key6_1.vni = vnet_get_geneve_vni_network_order (geneve1); - p1 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_1); - if (PREDICT_TRUE (p1 != NULL)) - { - mt1 = pool_elt_at_index (vxm->tunnels, p1[0]); - goto next1; /* valid packet */ - } - } - error1 = GENEVE_ERROR_NO_SUCH_TUNNEL; - next1 = GENEVE_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 == GENEVE_INPUT_NEXT_L2_INPUT)) - vnet_update_l2_len (b1); - - /* Set packet input sw_if_index to unicast GENEVE 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 geneve 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; - } - - trace1: - b1->error = error1 ? node->errors[error1] : 0; - - if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED)) - { - geneve_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_rsvd = vnet_get_geneve_vni (geneve1); - } - - 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; - geneve_header_t *geneve0; - uword *p0; - u32 tunnel_index0; - geneve_tunnel_t *t0, *mt0 = NULL; - geneve4_tunnel_key_t key4_0; - geneve6_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 = b[0]; - b += 1; - - /* udp leaves current_data pointing at the geneve header */ - geneve0 = vlib_buffer_get_current (b0); - vnet_geneve_hdr_1word_ntoh (geneve0); - - 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, geneve) */ - if (is_ip4) - { - vlib_buffer_advance - (b0, - sizeof (*ip4_0) + sizeof (udp_header_t) + - GENEVE_BASE_HEADER_LENGTH + - vnet_get_geneve_options_len (geneve0)); - } - else - { - vlib_buffer_advance - (b0, - sizeof (*ip6_0) + sizeof (udp_header_t) + - GENEVE_BASE_HEADER_LENGTH + - vnet_get_geneve_options_len (geneve0)); - } - - tunnel_index0 = ~0; - error0 = 0; - - if (PREDICT_FALSE - (vnet_get_geneve_version (geneve0) != GENEVE_VERSION)) - { - error0 = GENEVE_ERROR_BAD_FLAGS; - next0 = GENEVE_INPUT_NEXT_DROP; - goto trace00; - } -#if SUPPORT_OPTIONS_HEADER==1 - if (PREDICT_FALSE (vnet_get_geneve_critical_bit (geneve0) == 1)) - { - error0 = GENEVE_ERROR_BAD_FLAGS; - next0 = GENEVE_INPUT_NEXT_DROP; - goto trace00; - } -#endif - if (is_ip4) - { - key4_0.remote = ip4_0->src_address.as_u32; - key4_0.vni = vnet_get_geneve_vni_network_order (geneve0); - - /* Make sure unicast GENEVE tunnel exist by packet SIP and VNI */ - if (PREDICT_FALSE (key4_0.as_u64 != last_key4.as_u64)) - { - p0 = hash_get (vxm->geneve4_tunnel_by_key, key4_0.as_u64); - if (PREDICT_FALSE (p0 == NULL)) - { - error0 = GENEVE_ERROR_NO_SUCH_TUNNEL; - next0 = GENEVE_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 GENEVE tunnel encap-fib index agaist packet */ - if (PREDICT_FALSE (validate_geneve_fib (b0, t0, is_ip4) == 0)) - { - error0 = GENEVE_ERROR_NO_SUCH_TUNNEL; - next0 = GENEVE_INPUT_NEXT_DROP; - goto trace00; - } - - /* Validate GENEVE tunnel SIP against packet DIP */ - if (PREDICT_TRUE - (ip4_0->dst_address.as_u32 == t0->local.ip4.as_u32)) - goto next00; /* valid packet */ - if (PREDICT_FALSE - (ip4_address_is_multicast (&ip4_0->dst_address))) - { - key4_0.remote = ip4_0->dst_address.as_u32; - key4_0.vni = vnet_get_geneve_vni_network_order (geneve0); - /* Make sure mcast GENEVE tunnel exist by packet DIP and VNI */ - p0 = hash_get (vxm->geneve4_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 = GENEVE_ERROR_NO_SUCH_TUNNEL; - next0 = GENEVE_INPUT_NEXT_DROP; - goto trace00; - - } - else /* !is_ip4 */ - { - key6_0.remote.as_u64[0] = ip6_0->src_address.as_u64[0]; - key6_0.remote.as_u64[1] = ip6_0->src_address.as_u64[1]; - key6_0.vni = vnet_get_geneve_vni_network_order (geneve0); - - /* Make sure GENEVE 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->geneve6_tunnel_by_key, &key6_0); - if (PREDICT_FALSE (p0 == NULL)) - { - error0 = GENEVE_ERROR_NO_SUCH_TUNNEL; - next0 = GENEVE_INPUT_NEXT_DROP; - goto trace00; - } - clib_memcpy_fast (&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 GENEVE tunnel encap-fib index agaist packet */ - if (PREDICT_FALSE (validate_geneve_fib (b0, t0, is_ip4) == 0)) - { - error0 = GENEVE_ERROR_NO_SUCH_TUNNEL; - next0 = GENEVE_INPUT_NEXT_DROP; - goto trace00; - } - - /* Validate GENEVE tunnel SIP against packet DIP */ - if (PREDICT_TRUE (ip6_address_is_equal (&ip6_0->dst_address, - &t0->local.ip6))) - goto next00; /* valid packet */ - if (PREDICT_FALSE - (ip6_address_is_multicast (&ip6_0->dst_address))) - { - key6_0.remote.as_u64[0] = ip6_0->dst_address.as_u64[0]; - key6_0.remote.as_u64[1] = ip6_0->dst_address.as_u64[1]; - key6_0.vni = vnet_get_geneve_vni_network_order (geneve0); - p0 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_0); - if (PREDICT_TRUE (p0 != NULL)) - { - mt0 = pool_elt_at_index (vxm->tunnels, p0[0]); - goto next00; /* valid packet */ - } - } - error0 = GENEVE_ERROR_NO_SUCH_TUNNEL; - next0 = GENEVE_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 == GENEVE_INPUT_NEXT_L2_INPUT)) - vnet_update_l2_len (b0); - - /* Set packet input sw_if_index to unicast GENEVE 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 geneve 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)) - { - geneve_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_rsvd = vnet_get_geneve_vni (geneve0); - } - 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 ? - geneve4_input_node. - index : geneve6_input_node.index, - GENEVE_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; -} - -VLIB_NODE_FN (geneve4_input_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * from_frame) -{ - return geneve_input (vm, node, from_frame, /* is_ip4 */ 1); -} - -VLIB_NODE_FN (geneve6_input_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * from_frame) -{ - return geneve_input (vm, node, from_frame, /* is_ip4 */ 0); -} - -static char *geneve_error_strings[] = { -#define geneve_error(n,s) s, -#include <vnet/geneve/geneve_error.def> -#undef geneve_error -#undef _ -}; - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (geneve4_input_node) = { - .name = "geneve4-input", - /* Takes a vector of packets. */ - .vector_size = sizeof (u32), - .n_errors = GENEVE_N_ERROR, - .error_strings = geneve_error_strings, - .n_next_nodes = GENEVE_INPUT_N_NEXT, - .next_nodes = { -#define _(s,n) [GENEVE_INPUT_NEXT_##s] = n, - foreach_geneve_input_next -#undef _ - }, - -//temp .format_buffer = format_geneve_header, - .format_trace = format_geneve_rx_trace, - // $$$$ .unformat_buffer = unformat_geneve_header, -}; - -VLIB_REGISTER_NODE (geneve6_input_node) = { - .name = "geneve6-input", - /* Takes a vector of packets. */ - .vector_size = sizeof (u32), - .n_errors = GENEVE_N_ERROR, - .error_strings = geneve_error_strings, - .n_next_nodes = GENEVE_INPUT_N_NEXT, - .next_nodes = { -#define _(s,n) [GENEVE_INPUT_NEXT_##s] = n, - foreach_geneve_input_next -#undef _ - }, -//temp .format_buffer = format_geneve_header, - .format_trace = format_geneve_rx_trace, - // $$$$ .unformat_buffer = unformat_geneve_header, -}; -/* *INDENT-ON* */ - -typedef enum -{ - IP_GENEVE_BYPASS_NEXT_DROP, - IP_GENEVE_BYPASS_NEXT_GENEVE, - IP_GENEVE_BYPASS_N_NEXT, -} ip_vxan_bypass_next_t; - -always_inline uword -ip_geneve_bypass_inline (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame, u32 is_ip4) -{ - geneve_main_t *vxm = &geneve_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; -#ifdef CLIB_HAVE_VEC512 - vtep4_cache_t vtep4_u512; - clib_memset (&vtep4_u512, 0, sizeof (vtep4_u512)); -#endif - - 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) - { - /* Treat IP frag packets as "experimental" protocol for now - until support of IP frag reassembly is implemented */ - proto0 = ip4_is_fragment (ip40) ? 0xfe : ip40->protocol; - proto1 = ip4_is_fragment (ip41) ? 0xfe : 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_geneve)) - goto exit0; /* not GENEVE packet */ - - /* Validate DIP against VTEPs */ - if (is_ip4) - { -#ifdef CLIB_HAVE_VEC512 - if (!vtep4_check_vector - (&vxm->vtep_table, b0, ip40, &last_vtep4, &vtep4_u512)) -#else - if (!vtep4_check (&vxm->vtep_table, b0, ip40, &last_vtep4)) -#endif - goto exit0; /* no local VTEP for GENEVE packet */ - } - else - { - if (!vtep6_check (&vxm->vtep_table, b0, ip60, &last_vtep6)) - goto exit0; /* no local VTEP for GENEVE 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_GENEVE_BYPASS_NEXT_DROP : IP_GENEVE_BYPASS_NEXT_GENEVE; - b0->error = error0 ? error_node->errors[error0] : 0; - - /* geneve-input node expect current at GENEVE 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_geneve)) - goto exit1; /* not GENEVE packet */ - - /* Validate DIP against VTEPs */ - if (is_ip4) - { -#ifdef CLIB_HAVE_VEC512 - if (!vtep4_check_vector - (&vxm->vtep_table, b1, ip41, &last_vtep4, &vtep4_u512)) -#else - if (!vtep4_check (&vxm->vtep_table, b1, ip41, &last_vtep4)) -#endif - goto exit1; /* no local VTEP for GENEVE packet */ - } - else - { - if (!vtep6_check (&vxm->vtep_table, b1, ip61, &last_vtep6)) - goto exit1; /* no local VTEP for GENEVE 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_GENEVE_BYPASS_NEXT_DROP : IP_GENEVE_BYPASS_NEXT_GENEVE; - b1->error = error1 ? error_node->errors[error1] : 0; - - /* geneve-input node expect current at GENEVE 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) - /* Treat IP4 frag packets as "experimental" protocol for now - until support of IP frag reassembly is implemented */ - proto0 = ip4_is_fragment (ip40) ? 0xfe : 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_geneve)) - goto exit; /* not GENEVE packet */ - - /* Validate DIP against VTEPs */ - if (is_ip4) - { -#ifdef CLIB_HAVE_VEC512 - if (!vtep4_check_vector - (&vxm->vtep_table, b0, ip40, &last_vtep4, &vtep4_u512)) -#else - if (!vtep4_check (&vxm->vtep_table, b0, ip40, &last_vtep4)) -#endif - goto exit; /* no local VTEP for GENEVE packet */ - } - else - { - if (!vtep6_check (&vxm->vtep_table, b0, ip60, &last_vtep6)) - goto exit; /* no local VTEP for GENEVE 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_GENEVE_BYPASS_NEXT_DROP : IP_GENEVE_BYPASS_NEXT_GENEVE; - b0->error = error0 ? error_node->errors[error0] : 0; - - /* geneve-input node expect current at GENEVE 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_geneve_bypass_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame) -{ - return ip_geneve_bypass_inline (vm, node, frame, /* is_ip4 */ 1); -} - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (ip4_geneve_bypass_node) = -{ - .name = "ip4-geneve-bypass", - .vector_size = sizeof (u32), - .n_next_nodes = IP_GENEVE_BYPASS_N_NEXT,.next_nodes = - { - [IP_GENEVE_BYPASS_NEXT_DROP] = "error-drop", - [IP_GENEVE_BYPASS_NEXT_GENEVE] = "geneve4-input", - }, - .format_buffer = format_ip4_header, - .format_trace = format_ip4_forward_next_trace, -}; -/* *INDENT-ON* */ - -VLIB_NODE_FN (ip6_geneve_bypass_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame) -{ - return ip_geneve_bypass_inline (vm, node, frame, /* is_ip4 */ 0); -} - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (ip6_geneve_bypass_node) = -{ - .name = "ip6-geneve-bypass", - .vector_size = sizeof (u32), - .n_next_nodes = IP_GENEVE_BYPASS_N_NEXT, - .next_nodes = - { - [IP_GENEVE_BYPASS_NEXT_DROP] = "error-drop", - [IP_GENEVE_BYPASS_NEXT_GENEVE] = "geneve6-input", - }, - .format_buffer = format_ip6_header, - .format_trace = format_ip6_forward_next_trace, -}; -/* *INDENT-ON* */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |