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-rw-r--r--src/plugins/geneve/decap.c1303
1 files changed, 1303 insertions, 0 deletions
diff --git a/src/plugins/geneve/decap.c b/src/plugins/geneve/decap.c
new file mode 100644
index 00000000000..f42c0a88a5a
--- /dev/null
+++ b/src/plugins/geneve/decap.c
@@ -0,0 +1,1303 @@
+/*
+ * 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 <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 <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:
+ */