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authorEyal Bari <ebari@cisco.com>2017-10-19 15:27:51 +0300
committerJohn Lo <loj@cisco.com>2017-10-23 01:04:10 +0000
commitfb66301070cf2e77b61296dea9686a4ac6a94976 (patch)
tree699a6f1daf8604a01b5e301365d987d49d499fbb /src/vnet/vxlan
parentf3de674e92b31fd7f479382f882451fbcdf8b71a (diff)
VXLAN:small refactor to vxlan input
Change-Id: I2e7e08e1de20ab57e3f899b080b90a3082219ae5 Signed-off-by: Eyal Bari <ebari@cisco.com>
Diffstat (limited to 'src/vnet/vxlan')
-rw-r--r--src/vnet/vxlan/decap.c410
1 files changed, 175 insertions, 235 deletions
diff --git a/src/vnet/vxlan/decap.c b/src/vnet/vxlan/decap.c
index 0dc89d3fe7e..a26df9df15f 100644
--- a/src/vnet/vxlan/decap.c
+++ b/src/vnet/vxlan/decap.c
@@ -51,18 +51,13 @@ static u8 * format_vxlan_rx_trace (u8 * s, va_list * args)
always_inline u32
validate_vxlan_fib (vlib_buffer_t *b, vxlan_tunnel_t *t, u32 is_ip4)
{
- u32 fib_index, sw_if_index;
+ u32 sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX];
- 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];
+ 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;
return (fib_index == t->encap_fib_index);
}
@@ -73,7 +68,6 @@ vxlan_input (vlib_main_t * vm,
vlib_frame_t * from_frame,
u32 is_ip4)
{
- u32 n_left_from, next_index, * from, * to_next;
vxlan_main_t * vxm = &vxlan_main;
vnet_main_t * vnm = vxm->vnet_main;
vnet_interface_main_t * im = &vnm->interface_main;
@@ -82,41 +76,31 @@ vxlan_input (vlib_main_t * vm,
vxlan6_tunnel_key_t last_key6;
u32 pkts_decapsulated = 0;
u32 thread_index = vlib_get_thread_index();
- u32 stats_sw_if_index, stats_n_packets, stats_n_bytes;
if (is_ip4)
last_key4.as_u64 = ~0;
else
memset (&last_key6, 0xff, sizeof (last_key6));
- from = vlib_frame_vector_args (from_frame);
- n_left_from = from_frame->n_vectors;
+ u32 next_index = node->cached_next_index;
+ u32 stats_sw_if_index = node->runtime_data[0];
+ u32 stats_n_packets = 0, stats_n_bytes = 0;
- next_index = node->cached_next_index;
- stats_sw_if_index = node->runtime_data[0];
- stats_n_packets = stats_n_bytes = 0;
+ u32 * from = vlib_frame_vector_args (from_frame);
+ u32 n_left_from = from_frame->n_vectors;
while (n_left_from > 0)
{
- u32 n_left_to_next;
-
+ u32 * to_next, n_left_to_next;
vlib_get_next_frame (vm, node, next_index,
to_next, n_left_to_next);
+
while (n_left_from >= 4 && n_left_to_next >= 2)
{
u32 bi0, bi1;
vlib_buffer_t * b0, * b1;
u32 next0, next1;
- ip4_header_t * ip4_0, * ip4_1;
- ip6_header_t * ip6_0, * ip6_1;
- vxlan_header_t * vxlan0, * vxlan1;
- uword * p0, * p1;
- u32 tunnel_index0, tunnel_index1;
- vxlan_tunnel_t * t0, * t1, * mt0 = NULL, * mt1 = NULL;
- vxlan4_tunnel_key_t key4_0, key4_1;
- vxlan6_tunnel_key_t key6_0, key6_1;
- u32 error0, error1;
- u32 sw_if_index0, sw_if_index1, len0, len1;
+ vxlan_tunnel_t * t0, * t1, * stats_t0, * stats_t1;
/* Prefetch next iteration. */
{
@@ -145,42 +129,27 @@ vxlan_input (vlib_main_t * vm,
b1 = vlib_get_buffer (vm, bi1);
/* udp leaves current_data pointing at the vxlan header */
- vxlan0 = vlib_buffer_get_current (b0);
- vxlan1 = vlib_buffer_get_current (b1);
+ 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) {
- 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);
+ ip4_0 = cur0 - sizeof(udp_header_t) - sizeof(ip4_header_t);
+ ip4_1 = cur1 - sizeof(udp_header_t) - sizeof(ip4_header_t);
} 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);
+ ip6_0 = cur0 - sizeof(udp_header_t) - sizeof(ip6_header_t);
+ ip6_1 = cur1 - sizeof(udp_header_t) - sizeof(ip6_header_t);
}
/* pop (ip, udp, vxlan) */
- if (is_ip4) {
- vlib_buffer_advance
- (b0, sizeof(*ip4_0)+sizeof(udp_header_t)+sizeof(*vxlan0));
- vlib_buffer_advance
- (b1, sizeof(*ip4_1)+sizeof(udp_header_t)+sizeof(*vxlan1));
- } else {
- vlib_buffer_advance
- (b0, sizeof(*ip6_0)+sizeof(udp_header_t)+sizeof(*vxlan0));
- vlib_buffer_advance
- (b1, sizeof(*ip6_1)+sizeof(udp_header_t)+sizeof(*vxlan1));
- }
+ vlib_buffer_advance (b0, sizeof *vxlan0);
+ vlib_buffer_advance (b1, sizeof *vxlan1);
- tunnel_index0 = ~0;
- error0 = 0;
-
- tunnel_index1 = ~0;
- error1 = 0;
+ u32 tunnel_index0 = ~0, tunnel_index1 = ~0;
+ u32 error0 = 0, error1 = 0;
if (PREDICT_FALSE (vxlan0->flags != VXLAN_FLAGS_I))
{
@@ -189,26 +158,28 @@ vxlan_input (vlib_main_t * vm,
goto trace0;
}
- if (is_ip4) {
- key4_0.src = ip4_0->src_address.as_u32;
- key4_0.vni = vxlan0->vni_reserved;
+ if (is_ip4) {
/* 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 (key4_0.as_u64 != last_key4.as_u64))
{
- p0 = hash_get (vxm->vxlan4_tunnel_by_key, key4_0.as_u64);
- if (PREDICT_FALSE (p0 == NULL))
+ uword * p = hash_get (vxm->vxlan4_tunnel_by_key, key4_0.as_u64);
+ if (PREDICT_FALSE (p == NULL))
{
error0 = VXLAN_ERROR_NO_SUCH_TUNNEL;
next0 = VXLAN_INPUT_NEXT_DROP;
goto trace0;
}
- last_key4.as_u64 = key4_0.as_u64;
- tunnel_index0 = last_tunnel_index = p0[0];
+ last_key4 = key4_0;
+ last_tunnel_index = p[0];
}
- else
- tunnel_index0 = last_tunnel_index;
- t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
+ tunnel_index0 = last_tunnel_index;
+ stats_t0 = t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
/* Validate VXLAN tunnel encap-fib index agaist packet */
if (PREDICT_FALSE (validate_vxlan_fib (b0, t0, is_ip4) == 0))
@@ -224,12 +195,11 @@ vxlan_input (vlib_main_t * vm,
if (PREDICT_FALSE (ip4_address_is_multicast (&ip4_0->dst_address)))
{
key4_0.src = ip4_0->dst_address.as_u32;
- key4_0.vni = vxlan0->vni_reserved;
/* Make sure mcast VXLAN tunnel exist by packet DIP and VNI */
- p0 = hash_get (vxm->vxlan4_tunnel_by_key, key4_0.as_u64);
- if (PREDICT_TRUE (p0 != NULL))
+ uword * p = hash_get (vxm->vxlan4_tunnel_by_key, key4_0.as_u64);
+ if (PREDICT_TRUE (p != NULL))
{
- mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
+ stats_t0 = pool_elt_at_index (vxm->tunnels, p[0]);
goto next0; /* valid packet */
}
}
@@ -238,26 +208,26 @@ vxlan_input (vlib_main_t * vm,
goto trace0;
} else /* !is_ip4 */ {
- key6_0.src.as_u64[0] = ip6_0->src_address.as_u64[0];
- key6_0.src.as_u64[1] = ip6_0->src_address.as_u64[1];
- key6_0.vni = vxlan0->vni_reserved;
-
/* Make sure VXLAN tunnel exist according to packet SIP and VNI */
- if (PREDICT_FALSE (memcmp(&key6_0, &last_key6, sizeof(last_key6)) != 0))
+ vxlan6_tunnel_key_t key6_0 = {
+ .src = ip6_0->src_address,
+ .vni = vxlan0->vni_reserved,
+ };
+
+ if (PREDICT_FALSE (memcmp(&key6_0, &last_key6, sizeof(last_key6)) != 0))
{
- p0 = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6_0);
- if (PREDICT_FALSE (p0 == NULL))
+ uword * p = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6_0);
+ if (PREDICT_FALSE (p == NULL))
{
error0 = VXLAN_ERROR_NO_SUCH_TUNNEL;
next0 = VXLAN_INPUT_NEXT_DROP;
goto trace0;
}
clib_memcpy (&last_key6, &key6_0, sizeof(key6_0));
- tunnel_index0 = last_tunnel_index = p0[0];
+ last_tunnel_index = p[0];
}
- else
- tunnel_index0 = last_tunnel_index;
- t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
+ tunnel_index0 = last_tunnel_index;
+ stats_t0 = t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
/* Validate VXLAN tunnel encap-fib index agaist packet */
if (PREDICT_FALSE (validate_vxlan_fib (b0, t0, is_ip4) == 0))
@@ -273,13 +243,11 @@ vxlan_input (vlib_main_t * vm,
goto next0; /* valid packet */
if (PREDICT_FALSE (ip6_address_is_multicast (&ip6_0->dst_address)))
{
- key6_0.src.as_u64[0] = ip6_0->dst_address.as_u64[0];
- key6_0.src.as_u64[1] = ip6_0->dst_address.as_u64[1];
- key6_0.vni = vxlan0->vni_reserved;
- p0 = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6_0);
- if (PREDICT_TRUE (p0 != NULL))
+ key6_0.src = ip6_0->dst_address;
+ uword * p = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6_0);
+ if (PREDICT_TRUE (p != NULL))
{
- mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
+ stats_t0 = pool_elt_at_index (vxm->tunnels, p[0]);
goto next0; /* valid packet */
}
}
@@ -290,36 +258,33 @@ vxlan_input (vlib_main_t * vm,
next0:
next0 = t0->decap_next_index;
- sw_if_index0 = t0->sw_if_index;
- len0 = vlib_buffer_length_in_chain (vm, b0);
+ u32 len0 = vlib_buffer_length_in_chain (vm, b0);
/* Required to make the l2 tag push / pop code work on l2 subifs */
if (PREDICT_TRUE(next0 == VXLAN_INPUT_NEXT_L2_INPUT))
vnet_update_l2_len (b0);
/* Set packet input sw_if_index to unicast VXLAN tunnel for learning */
- vnet_buffer(b0)->sw_if_index[VLIB_RX] = sw_if_index0;
- sw_if_index0 = (mt0) ? mt0->sw_if_index : sw_if_index0;
-
- pkts_decapsulated ++;
- stats_n_packets += 1;
- stats_n_bytes += len0;
+ vnet_buffer(b0)->sw_if_index[VLIB_RX] = t0->sw_if_index;
/* Batch stats increment on the same vxlan tunnel so counter
is not incremented per packet */
+ u32 sw_if_index0 = stats_t0->sw_if_index;
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;
+ {
+ 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);
+ pkts_decapsulated += stats_n_packets;
+ stats_n_packets = stats_n_bytes = 0;
+ }
stats_sw_if_index = sw_if_index0;
}
+ stats_n_packets += 1;
+ stats_n_bytes += len0;
trace0:
b0->error = error0 ? node->errors[error0] : 0;
@@ -342,27 +307,28 @@ vxlan_input (vlib_main_t * vm,
}
if (is_ip4) {
- key4_1.src = ip4_1->src_address.as_u32;
- key4_1.vni = vxlan1->vni_reserved;
+ /* Make sure VXLAN tunnel exist according to packet SIP and VNI */
+ vxlan4_tunnel_key_t key4_1 = {
+ .src = ip4_1->src_address.as_u32,
+ .vni = vxlan1->vni_reserved
+ };
- /* Make sure unicast VXLAN tunnel exist by packet SIP and VNI */
if (PREDICT_FALSE (key4_1.as_u64 != last_key4.as_u64))
{
- p1 = hash_get (vxm->vxlan4_tunnel_by_key, key4_1.as_u64);
- if (PREDICT_FALSE (p1 == NULL))
+ uword * p = hash_get (vxm->vxlan4_tunnel_by_key, key4_1.as_u64);
+ if (PREDICT_FALSE (p == NULL))
{
error1 = VXLAN_ERROR_NO_SUCH_TUNNEL;
next1 = VXLAN_INPUT_NEXT_DROP;
goto trace1;
}
- last_key4.as_u64 = key4_1.as_u64;
- tunnel_index1 = last_tunnel_index = p1[0];
+ last_key4 = key4_1;
+ last_tunnel_index = p[0];
}
- else
- tunnel_index1 = last_tunnel_index;
- t1 = pool_elt_at_index (vxm->tunnels, tunnel_index1);
+ tunnel_index1 = last_tunnel_index;
+ stats_t1 = t1 = pool_elt_at_index (vxm->tunnels, tunnel_index1);
- /* Validate VXLAN tunnel encap-fib index agaist packet */
+ /* Validate VXLAN tunnel encap-fib index against packet */
if (PREDICT_FALSE (validate_vxlan_fib (b1, t1, is_ip4) == 0))
{
error1 = VXLAN_ERROR_NO_SUCH_TUNNEL;
@@ -375,13 +341,13 @@ vxlan_input (vlib_main_t * vm,
goto next1; /* valid packet */
if (PREDICT_FALSE (ip4_address_is_multicast (&ip4_1->dst_address)))
{
- key4_1.src = ip4_1->dst_address.as_u32;
- key4_1.vni = vxlan1->vni_reserved;
/* Make sure mcast VXLAN tunnel exist by packet DIP and VNI */
- p1 = hash_get (vxm->vxlan4_tunnel_by_key, key4_1.as_u64);
- if (PREDICT_TRUE (p1 != NULL))
+ key4_1.src = ip4_1->dst_address.as_u32;
+
+ uword * p = hash_get (vxm->vxlan4_tunnel_by_key, key4_1.as_u64);
+ if (PREDICT_TRUE (p != NULL))
{
- mt1 = pool_elt_at_index (vxm->tunnels, p1[0]);
+ stats_t1 = pool_elt_at_index (vxm->tunnels, p[0]);
goto next1; /* valid packet */
}
}
@@ -390,16 +356,16 @@ vxlan_input (vlib_main_t * vm,
goto trace1;
} else /* !is_ip4 */ {
- key6_1.src.as_u64[0] = ip6_1->src_address.as_u64[0];
- key6_1.src.as_u64[1] = ip6_1->src_address.as_u64[1];
- key6_1.vni = vxlan1->vni_reserved;
-
/* Make sure VXLAN tunnel exist according to packet SIP and VNI */
+ vxlan6_tunnel_key_t key6_1 = {
+ .src = ip6_1->src_address,
+ .vni = vxlan1->vni_reserved,
+ };
+
if (PREDICT_FALSE (memcmp(&key6_1, &last_key6, sizeof(last_key6)) != 0))
{
- p1 = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6_1);
-
- if (PREDICT_FALSE (p1 == NULL))
+ uword * p = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6_1);
+ if (PREDICT_FALSE (p == NULL))
{
error1 = VXLAN_ERROR_NO_SUCH_TUNNEL;
next1 = VXLAN_INPUT_NEXT_DROP;
@@ -407,11 +373,10 @@ vxlan_input (vlib_main_t * vm,
}
clib_memcpy (&last_key6, &key6_1, sizeof(key6_1));
- tunnel_index1 = last_tunnel_index = p1[0];
+ last_tunnel_index = p[0];
}
- else
- tunnel_index1 = last_tunnel_index;
- t1 = pool_elt_at_index (vxm->tunnels, tunnel_index1);
+ tunnel_index1 = last_tunnel_index;
+ stats_t1 = t1 = pool_elt_at_index (vxm->tunnels, tunnel_index1);
/* Validate VXLAN tunnel encap-fib index agaist packet */
if (PREDICT_FALSE (validate_vxlan_fib (b1, t1, is_ip4) == 0))
@@ -427,13 +392,12 @@ vxlan_input (vlib_main_t * vm,
goto next1; /* valid packet */
if (PREDICT_FALSE (ip6_address_is_multicast (&ip6_1->dst_address)))
{
- key6_1.src.as_u64[0] = ip6_1->dst_address.as_u64[0];
- key6_1.src.as_u64[1] = ip6_1->dst_address.as_u64[1];
- key6_1.vni = vxlan1->vni_reserved;
- p1 = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6_1);
- if (PREDICT_TRUE (p1 != NULL))
+ key6_1.src = ip6_1->dst_address;
+
+ uword * p = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6_1);
+ if (PREDICT_TRUE (p != NULL))
{
- mt1 = pool_elt_at_index (vxm->tunnels, p1[0]);
+ stats_t1 = pool_elt_at_index (vxm->tunnels, p[0]);
goto next1; /* valid packet */
}
}
@@ -444,36 +408,33 @@ vxlan_input (vlib_main_t * vm,
next1:
next1 = t1->decap_next_index;
- sw_if_index1 = t1->sw_if_index;
- len1 = vlib_buffer_length_in_chain (vm, b1);
+ u32 len1 = vlib_buffer_length_in_chain (vm, b1);
/* Required to make the l2 tag push / pop code work on l2 subifs */
if (PREDICT_TRUE(next1 == VXLAN_INPUT_NEXT_L2_INPUT))
vnet_update_l2_len (b1);
/* Set packet input sw_if_index to unicast VXLAN tunnel for learning */
- vnet_buffer(b1)->sw_if_index[VLIB_RX] = sw_if_index1;
- sw_if_index1 = (mt1) ? mt1->sw_if_index : sw_if_index1;
-
- pkts_decapsulated ++;
- stats_n_packets += 1;
- stats_n_bytes += len1;
+ vnet_buffer(b1)->sw_if_index[VLIB_RX] = t1->sw_if_index;
/* Batch stats increment on the same vxlan tunnel so counter
is not incremented per packet */
+ u32 sw_if_index1 = stats_t1->sw_if_index;
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;
+ {
+ 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);
+ pkts_decapsulated += stats_n_packets;
+ stats_n_packets = stats_n_bytes = 0;
+ }
stats_sw_if_index = sw_if_index1;
}
+ stats_n_packets += 1;
+ stats_n_bytes += len1;
trace1:
b1->error = error1 ? node->errors[error1] : 0;
@@ -500,14 +461,7 @@ vxlan_input (vlib_main_t * vm,
u32 next0;
ip4_header_t * ip4_0;
ip6_header_t * ip6_0;
- vxlan_header_t * vxlan0;
- uword * p0;
- u32 tunnel_index0;
- vxlan_tunnel_t * t0, * mt0 = NULL;
- vxlan4_tunnel_key_t key4_0;
- vxlan6_tunnel_key_t key6_0;
- u32 error0;
- u32 sw_if_index0, len0;
+ vxlan_tunnel_t * t0, * stats_t0;
bi0 = from[0];
to_next[0] = bi0;
@@ -519,28 +473,18 @@ vxlan_input (vlib_main_t * vm,
b0 = vlib_get_buffer (vm, bi0);
/* udp leaves current_data pointing at the vxlan header */
- vxlan0 = vlib_buffer_get_current (b0);
- if (is_ip4) {
- vlib_buffer_advance
- (b0, -(word)(sizeof(udp_header_t)+sizeof(ip4_header_t)));
- ip4_0 = vlib_buffer_get_current (b0);
- } else {
- vlib_buffer_advance
- (b0, -(word)(sizeof(udp_header_t)+sizeof(ip6_header_t)));
- ip6_0 = vlib_buffer_get_current (b0);
- }
+ void * cur0 = vlib_buffer_get_current (b0);
+ vxlan_header_t * vxlan0 = cur0;
+ 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) */
- if (is_ip4) {
- vlib_buffer_advance
- (b0, sizeof(*ip4_0)+sizeof(udp_header_t)+sizeof(*vxlan0));
- } else {
- vlib_buffer_advance
- (b0, sizeof(*ip6_0)+sizeof(udp_header_t)+sizeof(*vxlan0));
- }
+ vlib_buffer_advance (b0, sizeof(*vxlan0));
- tunnel_index0 = ~0;
- error0 = 0;
+ u32 tunnel_index0 = ~0;
+ u32 error0 = 0;
if (PREDICT_FALSE (vxlan0->flags != VXLAN_FLAGS_I))
{
@@ -550,25 +494,26 @@ vxlan_input (vlib_main_t * vm,
}
if (is_ip4) {
- key4_0.src = ip4_0->src_address.as_u32;
- key4_0.vni = vxlan0->vni_reserved;
+ vxlan4_tunnel_key_t key4_0 = {
+ .src = ip4_0->src_address.as_u32,
+ .vni = vxlan0->vni_reserved,
+ };
/* Make sure unicast VXLAN tunnel exist by packet SIP and VNI */
if (PREDICT_FALSE (key4_0.as_u64 != last_key4.as_u64))
{
- p0 = hash_get (vxm->vxlan4_tunnel_by_key, key4_0.as_u64);
- if (PREDICT_FALSE (p0 == NULL))
+ uword * p = hash_get (vxm->vxlan4_tunnel_by_key, key4_0.as_u64);
+ if (PREDICT_FALSE (p == NULL))
{
error0 = VXLAN_ERROR_NO_SUCH_TUNNEL;
next0 = VXLAN_INPUT_NEXT_DROP;
goto trace00;
}
- last_key4.as_u64 = key4_0.as_u64;
- tunnel_index0 = last_tunnel_index = p0[0];
+ last_key4 = key4_0;
+ last_tunnel_index = p[0];
}
- else
- tunnel_index0 = last_tunnel_index;
- t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
+ tunnel_index0 = last_tunnel_index;
+ stats_t0 = t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
/* Validate VXLAN tunnel encap-fib index agaist packet */
if (PREDICT_FALSE (validate_vxlan_fib (b0, t0, is_ip4) == 0))
@@ -583,13 +528,12 @@ vxlan_input (vlib_main_t * vm,
goto next00; /* valid packet */
if (PREDICT_FALSE (ip4_address_is_multicast (&ip4_0->dst_address)))
{
- key4_0.src = ip4_0->dst_address.as_u32;
- key4_0.vni = vxlan0->vni_reserved;
/* Make sure mcast VXLAN tunnel exist by packet DIP and VNI */
- p0 = hash_get (vxm->vxlan4_tunnel_by_key, key4_0.as_u64);
- if (PREDICT_TRUE (p0 != NULL))
+ key4_0.src = ip4_0->dst_address.as_u32;
+ uword * p = hash_get (vxm->vxlan4_tunnel_by_key, key4_0.as_u64);
+ if (PREDICT_TRUE (p != NULL))
{
- mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
+ stats_t0 = pool_elt_at_index (vxm->tunnels, p[0]);
goto next00; /* valid packet */
}
}
@@ -598,26 +542,26 @@ vxlan_input (vlib_main_t * vm,
goto trace00;
} else /* !is_ip4 */ {
- key6_0.src.as_u64[0] = ip6_0->src_address.as_u64[0];
- key6_0.src.as_u64[1] = ip6_0->src_address.as_u64[1];
- key6_0.vni = vxlan0->vni_reserved;
-
/* Make sure VXLAN tunnel exist according to packet SIP and VNI */
+ vxlan6_tunnel_key_t key6_0 = {
+ .src = ip6_0->src_address,
+ .vni = vxlan0->vni_reserved,
+ };
+
if (PREDICT_FALSE (memcmp(&key6_0, &last_key6, sizeof(last_key6)) != 0))
{
- p0 = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6_0);
- if (PREDICT_FALSE (p0 == NULL))
+ uword * p = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6_0);
+ if (PREDICT_FALSE (p == NULL))
{
error0 = VXLAN_ERROR_NO_SUCH_TUNNEL;
next0 = VXLAN_INPUT_NEXT_DROP;
goto trace00;
}
clib_memcpy (&last_key6, &key6_0, sizeof(key6_0));
- tunnel_index0 = last_tunnel_index = p0[0];
+ last_tunnel_index = p[0];
}
- else
- tunnel_index0 = last_tunnel_index;
- t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
+ tunnel_index0 = last_tunnel_index;
+ stats_t0 = t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
/* Validate VXLAN tunnel encap-fib index agaist packet */
if (PREDICT_FALSE (validate_vxlan_fib (b0, t0, is_ip4) == 0))
@@ -633,13 +577,11 @@ vxlan_input (vlib_main_t * vm,
goto next00; /* valid packet */
if (PREDICT_FALSE (ip6_address_is_multicast (&ip6_0->dst_address)))
{
- key6_0.src.as_u64[0] = ip6_0->dst_address.as_u64[0];
- key6_0.src.as_u64[1] = ip6_0->dst_address.as_u64[1];
- key6_0.vni = vxlan0->vni_reserved;
- p0 = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6_0);
- if (PREDICT_TRUE (p0 != NULL))
+ key6_0.src = ip6_0->dst_address;
+ uword * p = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6_0);
+ if (PREDICT_TRUE (p != NULL))
{
- mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
+ stats_t0 = pool_elt_at_index (vxm->tunnels, p[0]);
goto next00; /* valid packet */
}
}
@@ -650,36 +592,34 @@ vxlan_input (vlib_main_t * vm,
next00:
next0 = t0->decap_next_index;
- sw_if_index0 = t0->sw_if_index;
- len0 = vlib_buffer_length_in_chain (vm, b0);
+ u32 len0 = vlib_buffer_length_in_chain (vm, b0);
/* Required to make the l2 tag push / pop code work on l2 subifs */
if (PREDICT_TRUE(next0 == VXLAN_INPUT_NEXT_L2_INPUT))
vnet_update_l2_len (b0);
/* Set packet input sw_if_index to unicast VXLAN tunnel for learning */
- vnet_buffer(b0)->sw_if_index[VLIB_RX] = sw_if_index0;
- sw_if_index0 = (mt0) ? mt0->sw_if_index : sw_if_index0;
-
- pkts_decapsulated ++;
- stats_n_packets += 1;
- stats_n_bytes += len0;
+ vnet_buffer(b0)->sw_if_index[VLIB_RX] = t0->sw_if_index;
/* Batch stats increment on the same vxlan tunnel so counter
is not incremented per packet */
+ u32 sw_if_index0 = stats_t0->sw_if_index;
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;
+ {
+ 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);
+ pkts_decapsulated += stats_n_packets;
+ stats_n_packets = stats_n_bytes = 0;
+ }
stats_sw_if_index = sw_if_index0;
}
+ stats_n_packets += 1;
+ stats_n_bytes += len0;
+
trace00:
b0->error = error0 ? node->errors[error0] : 0;
@@ -700,21 +640,21 @@ vxlan_input (vlib_main_t * vm,
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
- /* Do we still need this now that tunnel tx stats is kept? */
- vlib_node_increment_counter (vm, is_ip4?
- vxlan4_input_node.index:vxlan6_input_node.index,
- VXLAN_ERROR_DECAPSULATED,
- pkts_decapsulated);
-
/* Increment any remaining batch stats */
if (stats_n_packets)
{
+ pkts_decapsulated += 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;
}
+ /* 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);
+
return from_frame->n_vectors;
}