#include <vnet/pg/pg.h>
#include <vnet/vxlan/vxlan.h>
+#ifndef CLIB_MARCH_VARIANT
vlib_node_registration_t vxlan4_input_node;
vlib_node_registration_t vxlan6_input_node;
+#endif
-typedef struct {
+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)
+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 *);
+ 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;
+ if (t->tunnel_index == ~0)
+ return format (s, "VXLAN decap error - tunnel for vni %d does not exist",
+ t->vni);
+ return format (s, "VXLAN decap from vxlan_tunnel%d vni %d next %d error %d",
+ t->tunnel_index, t->vni, t->next_index, t->error);
}
always_inline u32
-validate_vxlan_fib (vlib_buffer_t *b, vxlan_tunnel_t *t, u32 is_ip4)
+buf_fib_index (vlib_buffer_t * b, u32 is_ip4)
{
- u32 sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX];
+ u32 sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_TX];
+ if (sw_if_index != (u32) ~ 0)
+ return sw_if_index;
- u32 * fib_index_by_sw_if_index = is_ip4 ?
+ u32 *fib_index_by_sw_if_index = is_ip4 ?
ip4_main.fib_index_by_sw_if_index : ip6_main.fib_index_by_sw_if_index;
- u32 tx_sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_TX];
- u32 fib_index = (tx_sw_if_index == (u32) ~ 0) ?
- vec_elt (fib_index_by_sw_if_index, sw_if_index) : tx_sw_if_index;
+ sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX];
- return (fib_index == t->encap_fib_index);
+ return vec_elt (fib_index_by_sw_if_index, sw_if_index);
}
-typedef struct
-{
- vxlan4_tunnel_key_t key4;
- u32 tunnel_index;
-}last_tunnel_cache4;
+typedef vxlan4_tunnel_key_t last_tunnel_cache4;
-typedef struct
-{
- vxlan6_tunnel_key_t key6;
- u32 tunnel_index;
-}last_tunnel_cache6;
+static const vxlan_decap_info_t decap_not_found = {
+ .sw_if_index = ~0,
+ .next_index = VXLAN_INPUT_NEXT_DROP,
+ .error = VXLAN_ERROR_NO_SUCH_TUNNEL
+};
+
+static const vxlan_decap_info_t decap_bad_flags = {
+ .sw_if_index = ~0,
+ .next_index = VXLAN_INPUT_NEXT_DROP,
+ .error = VXLAN_ERROR_BAD_FLAGS
+};
-always_inline vxlan_tunnel_t *
+always_inline vxlan_decap_info_t
vxlan4_find_tunnel (vxlan_main_t * vxm, last_tunnel_cache4 * cache,
- ip4_header_t * ip4_0, vxlan_header_t * vxlan0,
- vxlan_tunnel_t ** stats_t0)
+ u32 fib_index, ip4_header_t * ip4_0,
+ vxlan_header_t * vxlan0, u32 * stats_sw_if_index)
{
- /* Make sure VXLAN tunnel exist according to packet SIP and VNI */
- vxlan4_tunnel_key_t key4_0 = {
- .src = ip4_0->src_address.as_u32,
- .vni = vxlan0->vni_reserved,
+ if (PREDICT_FALSE (vxlan0->flags != VXLAN_FLAGS_I))
+ return decap_bad_flags;
+
+ /* Make sure VXLAN tunnel exist according to packet S/D IP, VRF, and VNI */
+ u32 dst = ip4_0->dst_address.as_u32;
+ u32 src = ip4_0->src_address.as_u32;
+ vxlan4_tunnel_key_t key4 = {
+ .key[0] = ((u64) dst << 32) | src,
+ .key[1] = ((u64) fib_index << 32) | vxlan0->vni_reserved,
};
- if (PREDICT_FALSE (key4_0.as_u64 != cache->key4.as_u64))
- {
- uword * p = hash_get (vxm->vxlan4_tunnel_by_key, key4_0.as_u64);
- if (PREDICT_FALSE (p == 0))
- return 0;
+ if (PREDICT_TRUE
+ (key4.key[0] == cache->key[0] && key4.key[1] == cache->key[1]))
+ {
+ /* cache hit */
+ vxlan_decap_info_t di = {.as_u64 = cache->value };
+ *stats_sw_if_index = di.sw_if_index;
+ return di;
+ }
- cache->key4 = key4_0;
- cache->tunnel_index = p[0];
- }
- vxlan_tunnel_t * t0 = pool_elt_at_index (vxm->tunnels, cache->tunnel_index);
+ int rv = clib_bihash_search_inline_16_8 (&vxm->vxlan4_tunnel_by_key, &key4);
+ if (PREDICT_TRUE (rv == 0))
+ {
+ *cache = key4;
+ vxlan_decap_info_t di = {.as_u64 = key4.value };
+ *stats_sw_if_index = di.sw_if_index;
+ return di;
+ }
- /* Validate VXLAN tunnel SIP against packet DIP */
- if (PREDICT_TRUE (ip4_0->dst_address.as_u32 == t0->src.ip4.as_u32))
- *stats_t0 = t0;
- else
- {
- /* try multicast */
- if (PREDICT_TRUE (!ip4_address_is_multicast (&ip4_0->dst_address)))
- return 0;
-
- key4_0.src = ip4_0->dst_address.as_u32;
- /* Make sure mcast VXLAN tunnel exist by packet DIP and VNI */
- uword * p = hash_get (vxm->vxlan4_tunnel_by_key, key4_0.as_u64);
- if (PREDICT_FALSE (p == NULL))
- return 0;
- *stats_t0 = pool_elt_at_index (vxm->tunnels, p[0]);
- }
-
- return t0;
+ /* try multicast */
+ if (PREDICT_TRUE (!ip4_address_is_multicast (&ip4_0->dst_address)))
+ return decap_not_found;
+
+ /* search for mcast decap info by mcast address */
+ key4.key[0] = dst;
+ rv = clib_bihash_search_inline_16_8 (&vxm->vxlan4_tunnel_by_key, &key4);
+ if (rv != 0)
+ return decap_not_found;
+
+ /* search for unicast tunnel using the mcast tunnel local(src) ip */
+ vxlan_decap_info_t mdi = {.as_u64 = key4.value };
+ key4.key[0] = ((u64) mdi.local_ip.as_u32 << 32) | src;
+ rv = clib_bihash_search_inline_16_8 (&vxm->vxlan4_tunnel_by_key, &key4);
+ if (PREDICT_FALSE (rv != 0))
+ return decap_not_found;
+
+ /* mcast traffic does not update the cache */
+ *stats_sw_if_index = mdi.sw_if_index;
+ vxlan_decap_info_t di = {.as_u64 = key4.value };
+ return di;
}
-always_inline vxlan_tunnel_t *
+typedef vxlan6_tunnel_key_t last_tunnel_cache6;
+
+always_inline vxlan_decap_info_t
vxlan6_find_tunnel (vxlan_main_t * vxm, last_tunnel_cache6 * cache,
- ip6_header_t * ip6_0, vxlan_header_t * vxlan0,
- vxlan_tunnel_t ** stats_t0)
+ u32 fib_index, ip6_header_t * ip6_0,
+ vxlan_header_t * vxlan0, u32 * stats_sw_if_index)
{
+ if (PREDICT_FALSE (vxlan0->flags != VXLAN_FLAGS_I))
+ return decap_bad_flags;
+
/* Make sure VXLAN tunnel exist according to packet SIP and VNI */
- vxlan6_tunnel_key_t key6_0 = {
- .src = ip6_0->src_address,
- .vni = vxlan0->vni_reserved,
+ vxlan6_tunnel_key_t key6 = {
+ .key[0] = ip6_0->src_address.as_u64[0],
+ .key[1] = ip6_0->src_address.as_u64[1],
+ .key[2] = (((u64) fib_index) << 32) | vxlan0->vni_reserved,
};
- if (PREDICT_FALSE (memcmp(&key6_0, &cache->key6, sizeof key6_0) != 0))
- {
- uword * p = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6_0);
- if (PREDICT_FALSE (p == NULL))
- return 0;
+ if (PREDICT_FALSE
+ (clib_bihash_key_compare_24_8 (key6.key, cache->key) == 0))
+ {
+ int rv =
+ clib_bihash_search_inline_24_8 (&vxm->vxlan6_tunnel_by_key, &key6);
+ if (PREDICT_FALSE (rv != 0))
+ return decap_not_found;
- cache->key6 = key6_0;
- cache->tunnel_index = p[0];
- }
- vxlan_tunnel_t * t0 = pool_elt_at_index (vxm->tunnels, cache->tunnel_index);
+ *cache = key6;
+ }
+ vxlan_tunnel_t *t0 = pool_elt_at_index (vxm->tunnels, cache->value);
/* Validate VXLAN tunnel SIP against packet DIP */
if (PREDICT_TRUE (ip6_address_is_equal (&ip6_0->dst_address, &t0->src.ip6)))
- *stats_t0 = t0;
+ *stats_sw_if_index = t0->sw_if_index;
else
- {
- /* try multicast */
- if (PREDICT_TRUE (!ip6_address_is_multicast (&ip6_0->dst_address)))
- return 0;
-
- key6_0.src = ip6_0->dst_address;
- /* Make sure mcast VXLAN tunnel exist by packet DIP and VNI */
- uword * p = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6_0);
- if (PREDICT_FALSE (p == NULL))
- return 0;
- *stats_t0 = pool_elt_at_index (vxm->tunnels, p[0]);
- }
-
- return t0;
+ {
+ /* try multicast */
+ if (PREDICT_TRUE (!ip6_address_is_multicast (&ip6_0->dst_address)))
+ return decap_not_found;
+
+ /* Make sure mcast VXLAN tunnel exist by packet DIP and VNI */
+ key6.key[0] = ip6_0->dst_address.as_u64[0];
+ key6.key[1] = ip6_0->dst_address.as_u64[1];
+ int rv =
+ clib_bihash_search_inline_24_8 (&vxm->vxlan6_tunnel_by_key, &key6);
+ if (PREDICT_FALSE (rv != 0))
+ return decap_not_found;
+
+ vxlan_tunnel_t *mcast_t0 = pool_elt_at_index (vxm->tunnels, key6.value);
+ *stats_sw_if_index = mcast_t0->sw_if_index;
+ }
+
+ vxlan_decap_info_t di = {
+ .sw_if_index = t0->sw_if_index,
+ .next_index = t0->decap_next_index,
+ };
+ return di;
}
always_inline uword
vxlan_input (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * from_frame,
- u32 is_ip4)
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame, u32 is_ip4)
{
- vxlan_main_t * vxm = &vxlan_main;
- vnet_main_t * vnm = vxm->vnet_main;
- vnet_interface_main_t * im = &vnm->interface_main;
- vlib_combined_counter_main_t * rx_counter = im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX;
- vlib_combined_counter_main_t * drop_counter = im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_DROP;
- last_tunnel_cache4 last4 = { .tunnel_index = ~0 };
- last_tunnel_cache6 last6 = { .tunnel_index = ~0 };
- u32 pkts_decapsulated = 0;
- u32 thread_index = vlib_get_thread_index();
+ vxlan_main_t *vxm = &vxlan_main;
+ vnet_main_t *vnm = vxm->vnet_main;
+ vnet_interface_main_t *im = &vnm->interface_main;
+ vlib_combined_counter_main_t *rx_counter =
+ im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX;
+ last_tunnel_cache4 last4;
+ last_tunnel_cache6 last6;
+ u32 pkts_dropped = 0;
+ u32 thread_index = vlib_get_thread_index ();
if (is_ip4)
- last4.key4.as_u64 = ~0;
+ clib_memset (&last4, 0xff, sizeof last4);
else
- memset (&last6.key6, 0xff, sizeof last6.key6);
+ clib_memset (&last6, 0xff, sizeof last6);
- u32 next_index = node->cached_next_index;
-
- u32 * from = vlib_frame_vector_args (from_frame);
+ u32 *from = vlib_frame_vector_args (from_frame);
u32 n_left_from = from_frame->n_vectors;
- while (n_left_from > 0)
+ vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
+ vlib_get_buffers (vm, from, bufs, n_left_from);
+
+ u32 stats_if0 = ~0, stats_if1 = ~0;
+ u16 nexts[VLIB_FRAME_SIZE], *next = nexts;
+ while (n_left_from >= 4)
{
- u32 * to_next, n_left_to_next;
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+ /* Prefetch next iteration. */
+ vlib_prefetch_buffer_header (b[2], LOAD);
+ vlib_prefetch_buffer_header (b[3], LOAD);
- while (n_left_from >= 4 && n_left_to_next >= 2)
+ /* udp leaves current_data pointing at the vxlan header */
+ void *cur0 = vlib_buffer_get_current (b[0]);
+ void *cur1 = vlib_buffer_get_current (b[1]);
+ vxlan_header_t *vxlan0 = cur0;
+ vxlan_header_t *vxlan1 = cur1;
+
+
+ ip4_header_t *ip4_0, *ip4_1;
+ ip6_header_t *ip6_0, *ip6_1;
+ if (is_ip4)
{
- /* Prefetch next iteration. */
- {
- vlib_buffer_t * p2, * p3;
+ ip4_0 = cur0 - sizeof (udp_header_t) - sizeof (ip4_header_t);
+ ip4_1 = cur1 - sizeof (udp_header_t) - sizeof (ip4_header_t);
+ }
+ else
+ {
+ ip6_0 = cur0 - sizeof (udp_header_t) - sizeof (ip6_header_t);
+ ip6_1 = cur1 - sizeof (udp_header_t) - sizeof (ip6_header_t);
+ }
- p2 = vlib_get_buffer (vm, from[2]);
- p3 = vlib_get_buffer (vm, from[3]);
+ /* pop vxlan */
+ vlib_buffer_advance (b[0], sizeof *vxlan0);
+ vlib_buffer_advance (b[1], sizeof *vxlan1);
- vlib_prefetch_buffer_header (p2, LOAD);
- vlib_prefetch_buffer_header (p3, LOAD);
+ u32 fi0 = buf_fib_index (b[0], is_ip4);
+ u32 fi1 = buf_fib_index (b[1], is_ip4);
- CLIB_PREFETCH (p2->data, 2*CLIB_CACHE_LINE_BYTES, LOAD);
- CLIB_PREFETCH (p3->data, 2*CLIB_CACHE_LINE_BYTES, LOAD);
- }
+ vxlan_decap_info_t di0 = is_ip4 ?
+ vxlan4_find_tunnel (vxm, &last4, fi0, ip4_0, vxlan0, &stats_if0) :
+ vxlan6_find_tunnel (vxm, &last6, fi0, ip6_0, vxlan0, &stats_if0);
+ vxlan_decap_info_t di1 = is_ip4 ?
+ vxlan4_find_tunnel (vxm, &last4, fi1, ip4_1, vxlan1, &stats_if1) :
+ vxlan6_find_tunnel (vxm, &last6, fi1, ip6_1, vxlan1, &stats_if1);
- u32 bi0 = to_next[0] = from[0];
- u32 bi1 = to_next[1] = from[1];
- from += 2;
- to_next += 2;
- n_left_to_next -= 2;
- n_left_from -= 2;
+ /* Prefetch next iteration. */
+ CLIB_PREFETCH (b[2]->data, CLIB_CACHE_LINE_BYTES, LOAD);
+ CLIB_PREFETCH (b[3]->data, CLIB_CACHE_LINE_BYTES, LOAD);
- vlib_buffer_t * b0, * b1;
- b0 = vlib_get_buffer (vm, bi0);
- b1 = vlib_get_buffer (vm, bi1);
+ u32 len0 = vlib_buffer_length_in_chain (vm, b[0]);
+ u32 len1 = vlib_buffer_length_in_chain (vm, b[1]);
- /* udp leaves current_data pointing at the vxlan header */
- void * cur0 = vlib_buffer_get_current (b0);
- void * cur1 = vlib_buffer_get_current (b1);
- vxlan_header_t * vxlan0 = cur0;
- vxlan_header_t * vxlan1 = cur1;
-
- ip4_header_t * ip4_0, * ip4_1;
- ip6_header_t * ip6_0, * ip6_1;
- if (is_ip4) {
- ip4_0 = cur0 - sizeof(udp_header_t) - sizeof(ip4_header_t);
- ip4_1 = cur1 - sizeof(udp_header_t) - sizeof(ip4_header_t);
- } else {
- ip6_0 = cur0 - sizeof(udp_header_t) - sizeof(ip6_header_t);
- ip6_1 = cur1 - sizeof(udp_header_t) - sizeof(ip6_header_t);
- }
+ next[0] = di0.next_index;
+ next[1] = di1.next_index;
+
+ u8 any_error = di0.error | di1.error;
+ if (PREDICT_TRUE (any_error == 0))
+ {
+ /* Required to make the l2 tag push / pop code work on l2 subifs */
+ vnet_update_l2_len (b[0]);
+ vnet_update_l2_len (b[1]);
+ /* Set packet input sw_if_index to unicast VXLAN tunnel for learning */
+ vnet_buffer (b[0])->sw_if_index[VLIB_RX] = di0.sw_if_index;
+ vnet_buffer (b[1])->sw_if_index[VLIB_RX] = di1.sw_if_index;
+ vlib_increment_combined_counter (rx_counter, thread_index,
+ stats_if0, 1, len0);
+ vlib_increment_combined_counter (rx_counter, thread_index,
+ stats_if1, 1, len1);
+ }
+ else
+ {
+ if (di0.error == 0)
+ {
+ vnet_update_l2_len (b[0]);
+ vnet_buffer (b[0])->sw_if_index[VLIB_RX] = di0.sw_if_index;
+ vlib_increment_combined_counter (rx_counter, thread_index,
+ stats_if0, 1, len0);
+ }
+ else
+ {
+ b[0]->error = node->errors[di0.error];
+ pkts_dropped++;
+ }
- /* pop vxlan */
- vlib_buffer_advance (b0, sizeof *vxlan0);
- vlib_buffer_advance (b1, sizeof *vxlan1);
-
- vxlan_tunnel_t * t0, * stats_t0;
- vxlan_tunnel_t * t1, * stats_t1;
- if (is_ip4)
- {
- t0 = vxlan4_find_tunnel (vxm, &last4, ip4_0, vxlan0, &stats_t0);
- t1 = vxlan4_find_tunnel (vxm, &last4, ip4_1, vxlan1, &stats_t1);
- }
- else
- {
- t0 = vxlan6_find_tunnel (vxm, &last6, ip6_0, vxlan0, &stats_t0);
- t1 = vxlan6_find_tunnel (vxm, &last6, ip6_1, vxlan1, &stats_t1);
- }
-
- u32 len0 = vlib_buffer_length_in_chain (vm, b0);
- u32 len1 = vlib_buffer_length_in_chain (vm, b1);
-
- u32 next0, next1;
- u8 error0 = 0, error1 = 0;
- /* Validate VXLAN tunnel encap-fib index agaist packet */
- if (PREDICT_FALSE (t0 == 0 || validate_vxlan_fib (b0, t0, is_ip4) == 0 ||
- vxlan0->flags != VXLAN_FLAGS_I))
- {
- next0 = VXLAN_INPUT_NEXT_DROP;
-
- if (t0 != 0 && vxlan0->flags != VXLAN_FLAGS_I)
- {
- error0 = VXLAN_ERROR_BAD_FLAGS;
- vlib_increment_combined_counter
- (drop_counter, thread_index, stats_t0->sw_if_index, 1, len0);
- }
- else
- error0 = VXLAN_ERROR_NO_SUCH_TUNNEL;
- b0->error = node->errors[error0];
- }
- else
- {
- next0 = t0->decap_next_index;
-
- /* 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] = t0->sw_if_index;
- vlib_increment_combined_counter
- (rx_counter, thread_index, stats_t0->sw_if_index, 1, len0);
- pkts_decapsulated++;
- }
-
- /* Validate VXLAN tunnel encap-fib index agaist packet */
- if (PREDICT_FALSE (t1 == 0 || validate_vxlan_fib (b1, t1, is_ip4) == 0 ||
- vxlan1->flags != VXLAN_FLAGS_I))
- {
- next1 = VXLAN_INPUT_NEXT_DROP;
-
- if (t1 != 0 && vxlan1->flags != VXLAN_FLAGS_I)
- {
- error1 = VXLAN_ERROR_BAD_FLAGS;
- vlib_increment_combined_counter
- (drop_counter, thread_index, stats_t1->sw_if_index, 1, len1);
- }
- else
- error1 = VXLAN_ERROR_NO_SUCH_TUNNEL;
- b1->error = node->errors[error1];
- }
- else
- {
- next1 = t1->decap_next_index;
-
- /* 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] = t1->sw_if_index;
- pkts_decapsulated++;
-
- vlib_increment_combined_counter
- (rx_counter, thread_index, stats_t1->sw_if_index, 1, len1);
- }
-
- 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 = t0 == 0 ? ~0 : t0 - vxm->tunnels;
- tr->vni = vnet_get_vni (vxlan0);
- }
- 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 = t1 == 0 ? ~0 : t1 - vxm->tunnels;
- tr->vni = vnet_get_vni (vxlan1);
- }
+ if (di1.error == 0)
+ {
+ vnet_update_l2_len (b[1]);
+ vnet_buffer (b[1])->sw_if_index[VLIB_RX] = di1.sw_if_index;
+ vlib_increment_combined_counter (rx_counter, thread_index,
+ stats_if1, 1, len1);
+ }
+ else
+ {
+ b[1]->error = node->errors[di1.error];
+ pkts_dropped++;
+ }
+ }
- vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
- to_next, n_left_to_next,
- bi0, bi1, next0, next1);
+ if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ vxlan_rx_trace_t *tr =
+ vlib_add_trace (vm, node, b[0], sizeof (*tr));
+ tr->next_index = next[0];
+ tr->error = di0.error;
+ tr->tunnel_index = di0.sw_if_index == ~0 ?
+ ~0 : vxm->tunnel_index_by_sw_if_index[di0.sw_if_index];
+ tr->vni = vnet_get_vni (vxlan0);
}
+ if (PREDICT_FALSE (b[1]->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ vxlan_rx_trace_t *tr =
+ vlib_add_trace (vm, node, b[1], sizeof (*tr));
+ tr->next_index = next[1];
+ tr->error = di1.error;
+ tr->tunnel_index = di1.sw_if_index == ~0 ?
+ ~0 : vxm->tunnel_index_by_sw_if_index[di1.sw_if_index];
+ tr->vni = vnet_get_vni (vxlan1);
+ }
+ b += 2;
+ next += 2;
+ n_left_from -= 2;
+ }
- while (n_left_from > 0 && n_left_to_next > 0)
+ while (n_left_from > 0)
+ {
+ /* udp leaves current_data pointing at the vxlan header */
+ void *cur0 = vlib_buffer_get_current (b[0]);
+ vxlan_header_t *vxlan0 = cur0;
+ ip4_header_t *ip4_0;
+ ip6_header_t *ip6_0;
+ if (is_ip4)
+ ip4_0 = cur0 - sizeof (udp_header_t) - sizeof (ip4_header_t);
+ else
+ ip6_0 = cur0 - sizeof (udp_header_t) - sizeof (ip6_header_t);
+
+ /* pop (ip, udp, vxlan) */
+ vlib_buffer_advance (b[0], sizeof (*vxlan0));
+
+ u32 fi0 = buf_fib_index (b[0], is_ip4);
+
+ vxlan_decap_info_t di0 = is_ip4 ?
+ vxlan4_find_tunnel (vxm, &last4, fi0, ip4_0, vxlan0, &stats_if0) :
+ vxlan6_find_tunnel (vxm, &last6, fi0, ip6_0, vxlan0, &stats_if0);
+
+ uword len0 = vlib_buffer_length_in_chain (vm, b[0]);
+
+ next[0] = di0.next_index;
+
+ /* Validate VXLAN tunnel encap-fib index against packet */
+ if (di0.error == 0)
{
- u32 bi0 = to_next[0] = from[0];
- from += 1;
- to_next += 1;
- n_left_from -= 1;
- n_left_to_next -= 1;
+ /* Required to make the l2 tag push / pop code work on l2 subifs */
+ vnet_update_l2_len (b[0]);
- vlib_buffer_t * b0 = vlib_get_buffer (vm, bi0);
-
- /* udp leaves current_data pointing at the vxlan header */
- void * cur0 = vlib_buffer_get_current (b0);
- vxlan_header_t * vxlan0 = cur0;
- ip4_header_t * ip4_0;
- ip6_header_t * ip6_0;
- if (is_ip4)
- ip4_0 = cur0 -sizeof(udp_header_t) - sizeof(ip4_header_t);
- else
- ip6_0 = cur0 -sizeof(udp_header_t) - sizeof(ip6_header_t);
-
- /* pop (ip, udp, vxlan) */
- vlib_buffer_advance (b0, sizeof(*vxlan0));
-
- vxlan_tunnel_t * t0, * stats_t0;
- if (is_ip4)
- t0 = vxlan4_find_tunnel (vxm, &last4, ip4_0, vxlan0, &stats_t0);
- else
- t0 = vxlan6_find_tunnel (vxm, &last6, ip6_0, vxlan0, &stats_t0);
-
- uword len0 = vlib_buffer_length_in_chain (vm, b0);
-
- u32 next0;
- u8 error0 = 0;
- /* Validate VXLAN tunnel encap-fib index agaist packet */
- if (PREDICT_FALSE (t0 == 0 || validate_vxlan_fib (b0, t0, is_ip4) == 0 ||
- vxlan0->flags != VXLAN_FLAGS_I))
- {
- next0 = VXLAN_INPUT_NEXT_DROP;
-
- if (t0 != 0 && vxlan0->flags != VXLAN_FLAGS_I)
- {
- error0 = VXLAN_ERROR_BAD_FLAGS;
- vlib_increment_combined_counter
- (drop_counter, thread_index, stats_t0->sw_if_index, 1, len0);
- }
- else
- error0 = VXLAN_ERROR_NO_SUCH_TUNNEL;
- b0->error = node->errors[error0];
- }
- else
- {
- next0 = t0->decap_next_index;
-
- /* 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] = t0->sw_if_index;
- pkts_decapsulated++;
-
- vlib_increment_combined_counter
- (rx_counter, thread_index, stats_t0->sw_if_index, 1, len0);
- }
-
- 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 = t0 == 0 ? ~0 : t0 - vxm->tunnels;
- tr->vni = vnet_get_vni (vxlan0);
- }
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
- to_next, n_left_to_next,
- bi0, next0);
+ /* Set packet input sw_if_index to unicast VXLAN tunnel for learning */
+ vnet_buffer (b[0])->sw_if_index[VLIB_RX] = di0.sw_if_index;
+
+ vlib_increment_combined_counter (rx_counter, thread_index,
+ stats_if0, 1, len0);
+ }
+ else
+ {
+ b[0]->error = node->errors[di0.error];
+ pkts_dropped++;
}
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ vxlan_rx_trace_t *tr
+ = vlib_add_trace (vm, node, b[0], sizeof (*tr));
+ tr->next_index = next[0];
+ tr->error = di0.error;
+ tr->tunnel_index = di0.sw_if_index == ~0 ?
+ ~0 : vxm->tunnel_index_by_sw_if_index[di0.sw_if_index];
+ tr->vni = vnet_get_vni (vxlan0);
+ }
+ b += 1;
+ next += 1;
+ n_left_from -= 1;
}
+ vlib_buffer_enqueue_to_next (vm, node, from, nexts, from_frame->n_vectors);
/* Do we still need this now that tunnel tx stats is kept? */
u32 node_idx = is_ip4 ? vxlan4_input_node.index : vxlan6_input_node.index;
vlib_node_increment_counter (vm, node_idx, VXLAN_ERROR_DECAPSULATED,
- pkts_decapsulated);
+ from_frame->n_vectors - pkts_dropped);
return from_frame->n_vectors;
}
-static uword
-vxlan4_input (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * from_frame)
+VLIB_NODE_FN (vxlan4_input_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
{
- return vxlan_input(vm, node, from_frame, /* is_ip4 */ 1);
+ 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)
+VLIB_NODE_FN (vxlan6_input_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
{
- return vxlan_input(vm, node, from_frame, /* is_ip4 */ 0);
+ return vxlan_input (vm, node, from_frame, /* is_ip4 */ 0);
}
-static char * vxlan_error_strings[] = {
+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,
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (vxlan4_input_node) =
+{
.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,
+ .format_trace = format_vxlan_rx_trace,
.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,
- // $$$$ .unformat_buffer = unformat_vxlan_header,
};
-VLIB_NODE_FUNCTION_MULTIARCH (vxlan4_input_node, vxlan4_input)
-
-VLIB_REGISTER_NODE (vxlan6_input_node) = {
- .function = vxlan6_input,
+VLIB_REGISTER_NODE (vxlan6_input_node) =
+{
.name = "vxlan6-input",
- /* Takes a vector of packets. */
.vector_size = sizeof (u32),
-
.n_errors = VXLAN_N_ERROR,
.error_strings = vxlan_error_strings,
-
.n_next_nodes = VXLAN_INPUT_N_NEXT,
.next_nodes = {
#define _(s,n) [VXLAN_INPUT_NEXT_##s] = n,
foreach_vxlan_input_next
#undef _
},
-
-//temp .format_buffer = format_vxlan_header,
.format_trace = format_vxlan_rx_trace,
- // $$$$ .unformat_buffer = unformat_vxlan_header,
};
+/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (vxlan6_input_node, vxlan6_input)
-
-
-typedef enum {
+typedef enum
+{
IP_VXLAN_BYPASS_NEXT_DROP,
IP_VXLAN_BYPASS_NEXT_VXLAN,
IP_VXLAN_BYPASS_N_NEXT,
-} ip_vxan_bypass_next_t;
+} ip_vxlan_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)
+ 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 */
+ 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;
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);
+ 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 * 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;
+ {
+ 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_buffer_t * p2, * p3;
+ 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);
+ 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;
+ 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);
}
/* 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);
+ 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;
+ 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
{
/* Process packet 0 */
if (proto0 != IP_PROTOCOL_UDP)
- goto exit0; /* not UDP packet */
+ goto exit0; /* not UDP packet */
if (is_ip4)
udp0 = ip4_next_header (ip40);
udp0 = ip6_next_header (ip60);
if (udp0->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_vxlan))
- goto exit0; /* not VXLAN packet */
+ goto exit0; /* not VXLAN packet */
- /* Validate DIP against VTEPs*/
+ /* Validate DIP against VTEPs */
if (is_ip4)
{
if (addr4.as_u32 != ip40->dst_address.as_u32)
- {
+ {
if (!hash_get (vxm->vtep4, ip40->dst_address.as_u32))
- goto exit0; /* no local VTEP for VXLAN packet */
+ goto exit0; /* no local VTEP for VXLAN packet */
addr4 = ip40->dst_address;
- }
+ }
}
else
{
if (!ip6_address_is_equal (&addr6, &ip60->dst_address))
- {
+ {
if (!hash_get_mem (vxm->vtep6, &ip60->dst_address))
- goto exit0; /* no local VTEP for VXLAN packet */
+ goto exit0; /* no local VTEP for VXLAN packet */
addr6 = ip60->dst_address;
- }
+ }
}
flags0 = b0->flags;
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)
/* vxlan-input node expect current at VXLAN header */
if (is_ip4)
- vlib_buffer_advance (b0, sizeof(ip4_header_t)+sizeof(udp_header_t));
+ 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));
+ 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 */
+ goto exit1; /* not UDP packet */
if (is_ip4)
udp1 = ip4_next_header (ip41);
udp1 = ip6_next_header (ip61);
if (udp1->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_vxlan))
- goto exit1; /* not VXLAN packet */
+ goto exit1; /* not VXLAN packet */
- /* Validate DIP against VTEPs*/
+ /* Validate DIP against VTEPs */
if (is_ip4)
{
if (addr4.as_u32 != ip41->dst_address.as_u32)
- {
+ {
if (!hash_get (vxm->vtep4, ip41->dst_address.as_u32))
- goto exit1; /* no local VTEP for VXLAN packet */
+ goto exit1; /* no local VTEP for VXLAN packet */
addr4 = ip41->dst_address;
}
}
else
{
if (!ip6_address_is_equal (&addr6, &ip61->dst_address))
- {
+ {
if (!hash_get_mem (vxm->vtep6, &ip61->dst_address))
- goto exit1; /* no local VTEP for VXLAN packet */
+ goto exit1; /* no local VTEP for VXLAN packet */
addr6 = ip61->dst_address;
}
}
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)
/* vxlan-input node expect current at VXLAN header */
if (is_ip4)
- vlib_buffer_advance (b1, sizeof(ip4_header_t)+sizeof(udp_header_t));
+ 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));
+ vlib_buffer_advance (b1,
+ sizeof (ip6_header_t) +
+ sizeof (udp_header_t));
exit1:
vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
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;
+ 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;
ip60 = vlib_buffer_get_current (b0);
/* Setup packet for next IP feature */
- vnet_feature_next(vnet_buffer(b0)->sw_if_index[VLIB_RX], &next0, b0);
+ 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;
+ proto0 = ip4_is_fragment (ip40) ? 0xfe : ip40->protocol;
else
proto0 = ip60->protocol;
if (proto0 != IP_PROTOCOL_UDP)
- goto exit; /* not UDP packet */
+ goto exit; /* not UDP packet */
if (is_ip4)
udp0 = ip4_next_header (ip40);
udp0 = ip6_next_header (ip60);
if (udp0->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_vxlan))
- goto exit; /* not VXLAN packet */
+ goto exit; /* not VXLAN packet */
- /* Validate DIP against VTEPs*/
+ /* Validate DIP against VTEPs */
if (is_ip4)
{
if (addr4.as_u32 != ip40->dst_address.as_u32)
- {
+ {
if (!hash_get (vxm->vtep4, ip40->dst_address.as_u32))
- goto exit; /* no local VTEP for VXLAN packet */
+ goto exit; /* no local VTEP for VXLAN packet */
addr4 = ip40->dst_address;
}
}
else
{
if (!ip6_address_is_equal (&addr6, &ip60->dst_address))
- {
+ {
if (!hash_get_mem (vxm->vtep6, &ip60->dst_address))
- goto exit; /* no local VTEP for VXLAN packet */
+ goto exit; /* no local VTEP for VXLAN packet */
addr6 = ip60->dst_address;
}
}
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)
/* vxlan-input node expect current at VXLAN header */
if (is_ip4)
- vlib_buffer_advance (b0, sizeof(ip4_header_t)+sizeof(udp_header_t));
+ 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));
+ vlib_buffer_advance (b0,
+ sizeof (ip6_header_t) +
+ sizeof (udp_header_t));
exit:
vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
return frame->n_vectors;
}
-static uword
-ip4_vxlan_bypass (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+VLIB_NODE_FN (ip4_vxlan_bypass_node) (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,
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ip4_vxlan_bypass_node) =
+{
.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",
+ [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)
+/* *INDENT-ON* */
/* Dummy init function to get us linked in. */
-clib_error_t * ip4_vxlan_bypass_init (vlib_main_t * vm)
-{ return 0; }
+static clib_error_t *
+ip4_vxlan_bypass_init (vlib_main_t * vm)
+{
+ return 0;
+}
VLIB_INIT_FUNCTION (ip4_vxlan_bypass_init);
-static uword
-ip6_vxlan_bypass (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+VLIB_NODE_FN (ip6_vxlan_bypass_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
{
return ip_vxlan_bypass_inline (vm, node, frame, /* is_ip4 */ 0);
}
-VLIB_REGISTER_NODE (ip6_vxlan_bypass_node) = {
- .function = ip6_vxlan_bypass,
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ip6_vxlan_bypass_node) =
+{
.name = "ip6-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] = "vxlan6-input",
},
-
.format_buffer = format_ip6_header,
.format_trace = format_ip6_forward_next_trace,
};
-VLIB_NODE_FUNCTION_MULTIARCH (ip6_vxlan_bypass_node,ip6_vxlan_bypass)
+/* *INDENT-ON* */
/* Dummy init function to get us linked in. */
-clib_error_t * ip6_vxlan_bypass_init (vlib_main_t * vm)
-{ return 0; }
+static clib_error_t *
+ip6_vxlan_bypass_init (vlib_main_t * vm)
+{
+ return 0;
+}
VLIB_INIT_FUNCTION (ip6_vxlan_bypass_init);
+
+#define foreach_vxlan_flow_input_next \
+_(DROP, "error-drop") \
+_(L2_INPUT, "l2-input")
+
+typedef enum
+{
+#define _(s,n) VXLAN_FLOW_NEXT_##s,
+ foreach_vxlan_flow_input_next
+#undef _
+ VXLAN_FLOW_N_NEXT,
+} vxlan_flow_input_next_t;
+
+#define foreach_vxlan_flow_error \
+ _(NONE, "no error") \
+ _(IP_CHECKSUM_ERROR, "Rx ip checksum errors") \
+ _(IP_HEADER_ERROR, "Rx ip header errors") \
+ _(UDP_CHECKSUM_ERROR, "Rx udp checksum errors") \
+ _(UDP_LENGTH_ERROR, "Rx udp length errors")
+
+typedef enum
+{
+#define _(f,s) VXLAN_FLOW_ERROR_##f,
+ foreach_vxlan_flow_error
+#undef _
+ VXLAN_FLOW_N_ERROR,
+} vxlan_flow_error_t;
+
+static char *vxlan_flow_error_strings[] = {
+#define _(n,s) s,
+ foreach_vxlan_flow_error
+#undef _
+};
+
+
+static_always_inline u8
+vxlan_validate_udp_csum (vlib_main_t * vm, vlib_buffer_t * b)
+{
+ u32 flags = b->flags;
+ enum
+ { offset =
+ sizeof (ip4_header_t) + sizeof (udp_header_t) + sizeof (vxlan_header_t),
+ };
+
+ /* Verify UDP checksum */
+ if ((flags & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
+ {
+ vlib_buffer_advance (b, -offset);
+ flags = ip4_tcp_udp_validate_checksum (vm, b);
+ vlib_buffer_advance (b, offset);
+ }
+
+ return (flags & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
+}
+
+static_always_inline u8
+vxlan_check_udp_csum (vlib_main_t * vm, vlib_buffer_t * b)
+{
+ ip4_vxlan_header_t *hdr = vlib_buffer_get_current (b) - sizeof *hdr;
+ udp_header_t *udp = &hdr->udp;
+ /* Don't verify UDP checksum for packets with explicit zero checksum. */
+ u8 good_csum = (b->flags & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0 ||
+ udp->checksum == 0;
+
+ return !good_csum;
+}
+
+static_always_inline u8
+vxlan_check_ip (vlib_buffer_t * b, u16 payload_len)
+{
+ ip4_vxlan_header_t *hdr = vlib_buffer_get_current (b) - sizeof *hdr;
+ u16 ip_len = clib_net_to_host_u16 (hdr->ip4.length);
+ u16 expected = payload_len + sizeof *hdr;
+ return ip_len > expected || hdr->ip4.ttl == 0
+ || hdr->ip4.ip_version_and_header_length != 0x45;
+}
+
+static_always_inline u8
+vxlan_check_ip_udp_len (vlib_buffer_t * b)
+{
+ ip4_vxlan_header_t *hdr = vlib_buffer_get_current (b) - sizeof *hdr;
+ u16 ip_len = clib_net_to_host_u16 (hdr->ip4.length);
+ u16 udp_len = clib_net_to_host_u16 (hdr->udp.length);
+ return udp_len > ip_len;
+}
+
+static_always_inline u8
+vxlan_err_code (u8 ip_err0, u8 udp_err0, u8 csum_err0)
+{
+ u8 error0 = VXLAN_FLOW_ERROR_NONE;
+ if (ip_err0)
+ error0 = VXLAN_FLOW_ERROR_IP_HEADER_ERROR;
+ if (udp_err0)
+ error0 = VXLAN_FLOW_ERROR_UDP_LENGTH_ERROR;
+ if (csum_err0)
+ error0 = VXLAN_FLOW_ERROR_UDP_CHECKSUM_ERROR;
+ return error0;
+}
+
+VLIB_NODE_FN (vxlan4_flow_input_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * f)
+{
+ enum
+ { payload_offset = sizeof (ip4_vxlan_header_t) };
+
+ vxlan_main_t *vxm = &vxlan_main;
+ vnet_interface_main_t *im = &vnet_main.interface_main;
+ vlib_combined_counter_main_t *rx_counter[VXLAN_FLOW_N_NEXT] = {
+ [VXLAN_FLOW_NEXT_DROP] =
+ im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_DROP,
+ [VXLAN_FLOW_NEXT_L2_INPUT] =
+ im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
+ };
+ u32 thread_index = vlib_get_thread_index ();
+
+ u32 *from = vlib_frame_vector_args (f);
+ u32 n_left_from = f->n_vectors;
+ u32 next_index = VXLAN_FLOW_NEXT_L2_INPUT;
+
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next, *to_next;
+
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ while (n_left_from > 3 && n_left_to_next > 3)
+ {
+ u32 bi0 = to_next[0] = from[0];
+ u32 bi1 = to_next[1] = from[1];
+ u32 bi2 = to_next[2] = from[2];
+ u32 bi3 = to_next[3] = from[3];
+ from += 4;
+ n_left_from -= 4;
+ to_next += 4;
+ n_left_to_next -= 4;
+
+ vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0);
+ vlib_buffer_t *b1 = vlib_get_buffer (vm, bi1);
+ vlib_buffer_t *b2 = vlib_get_buffer (vm, bi2);
+ vlib_buffer_t *b3 = vlib_get_buffer (vm, bi3);
+
+ vlib_buffer_advance (b0, payload_offset);
+ vlib_buffer_advance (b1, payload_offset);
+ vlib_buffer_advance (b2, payload_offset);
+ vlib_buffer_advance (b3, payload_offset);
+
+ u16 len0 = vlib_buffer_length_in_chain (vm, b0);
+ u16 len1 = vlib_buffer_length_in_chain (vm, b1);
+ u16 len2 = vlib_buffer_length_in_chain (vm, b2);
+ u16 len3 = vlib_buffer_length_in_chain (vm, b3);
+
+ u32 next0 = VXLAN_FLOW_NEXT_L2_INPUT, next1 =
+ VXLAN_FLOW_NEXT_L2_INPUT, next2 =
+ VXLAN_FLOW_NEXT_L2_INPUT, next3 = VXLAN_FLOW_NEXT_L2_INPUT;
+
+ u8 ip_err0 = vxlan_check_ip (b0, len0);
+ u8 ip_err1 = vxlan_check_ip (b1, len1);
+ u8 ip_err2 = vxlan_check_ip (b2, len2);
+ u8 ip_err3 = vxlan_check_ip (b3, len3);
+ u8 ip_err = ip_err0 | ip_err1 | ip_err2 | ip_err3;
+
+ u8 udp_err0 = vxlan_check_ip_udp_len (b0);
+ u8 udp_err1 = vxlan_check_ip_udp_len (b1);
+ u8 udp_err2 = vxlan_check_ip_udp_len (b2);
+ u8 udp_err3 = vxlan_check_ip_udp_len (b3);
+ u8 udp_err = udp_err0 | udp_err1 | udp_err2 | udp_err3;
+
+ u8 csum_err0 = vxlan_check_udp_csum (vm, b0);
+ u8 csum_err1 = vxlan_check_udp_csum (vm, b1);
+ u8 csum_err2 = vxlan_check_udp_csum (vm, b2);
+ u8 csum_err3 = vxlan_check_udp_csum (vm, b3);
+ u8 csum_err = csum_err0 | csum_err1 | csum_err2 | csum_err3;
+
+ if (PREDICT_FALSE (csum_err))
+ {
+ if (csum_err0)
+ csum_err0 = !vxlan_validate_udp_csum (vm, b0);
+ if (csum_err1)
+ csum_err1 = !vxlan_validate_udp_csum (vm, b1);
+ if (csum_err2)
+ csum_err2 = !vxlan_validate_udp_csum (vm, b2);
+ if (csum_err3)
+ csum_err3 = !vxlan_validate_udp_csum (vm, b3);
+ csum_err = csum_err0 | csum_err1 | csum_err2 | csum_err3;
+ }
+
+ if (PREDICT_FALSE (ip_err || udp_err || csum_err))
+ {
+ if (ip_err0 || udp_err0 || csum_err0)
+ {
+ next0 = VXLAN_FLOW_NEXT_DROP;
+ u8 error0 = vxlan_err_code (ip_err0, udp_err0, csum_err0);
+ b0->error = node->errors[error0];
+ }
+ if (ip_err1 || udp_err1 || csum_err1)
+ {
+ next1 = VXLAN_FLOW_NEXT_DROP;
+ u8 error1 = vxlan_err_code (ip_err1, udp_err1, csum_err1);
+ b1->error = node->errors[error1];
+ }
+ if (ip_err2 || udp_err2 || csum_err2)
+ {
+ next2 = VXLAN_FLOW_NEXT_DROP;
+ u8 error2 = vxlan_err_code (ip_err2, udp_err2, csum_err2);
+ b2->error = node->errors[error2];
+ }
+ if (ip_err3 || udp_err3 || csum_err3)
+ {
+ next3 = VXLAN_FLOW_NEXT_DROP;
+ u8 error3 = vxlan_err_code (ip_err3, udp_err3, csum_err3);
+ b3->error = node->errors[error3];
+ }
+ }
+
+ vnet_update_l2_len (b0);
+ vnet_update_l2_len (b1);
+ vnet_update_l2_len (b2);
+ vnet_update_l2_len (b3);
+
+ ASSERT (b0->flow_id != 0);
+ ASSERT (b1->flow_id != 0);
+ ASSERT (b2->flow_id != 0);
+ ASSERT (b3->flow_id != 0);
+
+ u32 t_index0 = b0->flow_id - vxm->flow_id_start;
+ u32 t_index1 = b1->flow_id - vxm->flow_id_start;
+ u32 t_index2 = b2->flow_id - vxm->flow_id_start;
+ u32 t_index3 = b3->flow_id - vxm->flow_id_start;
+
+ vxlan_tunnel_t *t0 = &vxm->tunnels[t_index0];
+ vxlan_tunnel_t *t1 = &vxm->tunnels[t_index1];
+ vxlan_tunnel_t *t2 = &vxm->tunnels[t_index2];
+ vxlan_tunnel_t *t3 = &vxm->tunnels[t_index3];
+
+ /* flow id consumed */
+ b0->flow_id = 0;
+ b1->flow_id = 0;
+ b2->flow_id = 0;
+ b3->flow_id = 0;
+
+ u32 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX] =
+ t0->sw_if_index;
+ u32 sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX] =
+ t1->sw_if_index;
+ u32 sw_if_index2 = vnet_buffer (b2)->sw_if_index[VLIB_RX] =
+ t2->sw_if_index;
+ u32 sw_if_index3 = vnet_buffer (b3)->sw_if_index[VLIB_RX] =
+ t3->sw_if_index;
+
+ vlib_increment_combined_counter (rx_counter[next0], thread_index,
+ sw_if_index0, 1, len0);
+ vlib_increment_combined_counter (rx_counter[next1], thread_index,
+ sw_if_index1, 1, len1);
+ vlib_increment_combined_counter (rx_counter[next2], thread_index,
+ sw_if_index2, 1, len2);
+ vlib_increment_combined_counter (rx_counter[next3], thread_index,
+ sw_if_index3, 1, len3);
+
+ u32 flags = b0->flags | b1->flags | b2->flags | b3->flags;
+
+ if (PREDICT_FALSE (flags & VLIB_BUFFER_IS_TRACED))
+ {
+ if (b0->flags & VLIB_BUFFER_IS_TRACED)
+ {
+ vxlan_rx_trace_t *tr =
+ vlib_add_trace (vm, node, b0, sizeof *tr);
+ u8 error0 = vxlan_err_code (ip_err0, udp_err0, csum_err0);
+ tr->next_index = next0;
+ tr->error = error0;
+ tr->tunnel_index = t_index0;
+ tr->vni = t0->vni;
+ }
+ if (b1->flags & VLIB_BUFFER_IS_TRACED)
+ {
+ vxlan_rx_trace_t *tr =
+ vlib_add_trace (vm, node, b1, sizeof *tr);
+ u8 error1 = vxlan_err_code (ip_err1, udp_err1, csum_err1);
+ tr->next_index = next1;
+ tr->error = error1;
+ tr->tunnel_index = t_index1;
+ tr->vni = t1->vni;
+ }
+ if (b2->flags & VLIB_BUFFER_IS_TRACED)
+ {
+ vxlan_rx_trace_t *tr =
+ vlib_add_trace (vm, node, b2, sizeof *tr);
+ u8 error2 = vxlan_err_code (ip_err2, udp_err2, csum_err2);
+ tr->next_index = next2;
+ tr->error = error2;
+ tr->tunnel_index = t_index2;
+ tr->vni = t2->vni;
+ }
+ if (b3->flags & VLIB_BUFFER_IS_TRACED)
+ {
+ vxlan_rx_trace_t *tr =
+ vlib_add_trace (vm, node, b3, sizeof *tr);
+ u8 error3 = vxlan_err_code (ip_err3, udp_err3, csum_err3);
+ tr->next_index = next3;
+ tr->error = error3;
+ tr->tunnel_index = t_index3;
+ tr->vni = t3->vni;
+ }
+ }
+ vlib_validate_buffer_enqueue_x4
+ (vm, node, next_index, to_next, n_left_to_next,
+ bi0, bi1, bi2, bi3, next0, next1, next2, next3);
+ }
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 bi0 = to_next[0] = from[0];
+ from++;
+ n_left_from--;
+ to_next++;
+ n_left_to_next--;
+
+ vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0);
+ vlib_buffer_advance (b0, payload_offset);
+
+ u16 len0 = vlib_buffer_length_in_chain (vm, b0);
+ u32 next0 = VXLAN_FLOW_NEXT_L2_INPUT;
+
+ u8 ip_err0 = vxlan_check_ip (b0, len0);
+ u8 udp_err0 = vxlan_check_ip_udp_len (b0);
+ u8 csum_err0 = vxlan_check_udp_csum (vm, b0);
+
+ if (csum_err0)
+ csum_err0 = !vxlan_validate_udp_csum (vm, b0);
+ if (ip_err0 || udp_err0 || csum_err0)
+ {
+ next0 = VXLAN_FLOW_NEXT_DROP;
+ u8 error0 = vxlan_err_code (ip_err0, udp_err0, csum_err0);
+ b0->error = node->errors[error0];
+ }
+
+ vnet_update_l2_len (b0);
+
+ ASSERT (b0->flow_id != 0);
+ u32 t_index0 = b0->flow_id - vxm->flow_id_start;
+ vxlan_tunnel_t *t0 = &vxm->tunnels[t_index0];
+ b0->flow_id = 0;
+
+ u32 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX] =
+ t0->sw_if_index;
+ vlib_increment_combined_counter (rx_counter[next0], thread_index,
+ sw_if_index0, 1, len0);
+
+ if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ vxlan_rx_trace_t *tr =
+ vlib_add_trace (vm, node, b0, sizeof *tr);
+ u8 error0 = vxlan_err_code (ip_err0, udp_err0, csum_err0);
+ tr->next_index = next0;
+ tr->error = error0;
+ tr->tunnel_index = t_index0;
+ tr->vni = t0->vni;
+ }
+ 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 f->n_vectors;
+}
+
+/* *INDENT-OFF* */
+#ifndef CLIB_MULTIARCH_VARIANT
+VLIB_REGISTER_NODE (vxlan4_flow_input_node) = {
+ .name = "vxlan-flow-input",
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .vector_size = sizeof (u32),
+
+ .format_trace = format_vxlan_rx_trace,
+
+ .n_errors = VXLAN_FLOW_N_ERROR,
+ .error_strings = vxlan_flow_error_strings,
+
+ .n_next_nodes = VXLAN_FLOW_N_NEXT,
+ .next_nodes = {
+#define _(s,n) [VXLAN_FLOW_NEXT_##s] = n,
+ foreach_vxlan_flow_input_next
+#undef _
+ },
+};
+#endif
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
Code Review / vpp.git / blobdiff