From fb66301070cf2e77b61296dea9686a4ac6a94976 Mon Sep 17 00:00:00 2001 From: Eyal Bari Date: Thu, 19 Oct 2017 15:27:51 +0300 Subject: VXLAN:small refactor to vxlan input Change-Id: I2e7e08e1de20ab57e3f899b080b90a3082219ae5 Signed-off-by: Eyal Bari --- src/vnet/vxlan/decap.c | 410 +++++++++++++++++++++---------------------------- 1 file changed, 175 insertions(+), 235 deletions(-) (limited to 'src/vnet/vxlan/decap.c') 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; } -- cgit 1.2.3-korg