diff options
Diffstat (limited to 'vnet')
| -rw-r--r-- | vnet/vnet/ip/ip4_forward.c | 10 | ||||
| -rw-r--r-- | vnet/vnet/ip/ip4_input.c | 149 |
2 files changed, 76 insertions, 83 deletions
diff --git a/vnet/vnet/ip/ip4_forward.c b/vnet/vnet/ip/ip4_forward.c index c743139c5b0..6a9e066027c 100644 --- a/vnet/vnet/ip/ip4_forward.c +++ b/vnet/vnet/ip/ip4_forward.c @@ -824,11 +824,11 @@ ip4_sw_interface_enable_disable (u32 sw_if_index, u32 is_enable) if (0 != --im->ip_enabled_by_sw_if_index[sw_if_index]) return; } - vnet_feature_enable_disable ("ip4-unicast", "ip4-lookup", sw_if_index, - is_enable, 0, 0); + vnet_feature_enable_disable ("ip4-unicast", "ip4-drop", sw_if_index, + !is_enable, 0, 0); - vnet_feature_enable_disable ("ip4-multicast", "ip4-lookup-multicast", - sw_if_index, is_enable, 0, 0); + vnet_feature_enable_disable ("ip4-multicast", "ip4-drop", sw_if_index, + !is_enable, 0, 0); } @@ -932,6 +932,7 @@ VNET_FEATURE_ARC_INIT (ip4_unicast, static) = { .arc_name = "ip4-unicast", .start_nodes = VNET_FEATURES ("ip4-input", "ip4-input-no-checksum"), + .end_node = "ip4-lookup", .arc_index_ptr = &ip4_main.lookup_main.ucast_feature_arc_index, }; @@ -1018,6 +1019,7 @@ VNET_FEATURE_ARC_INIT (ip4_multicast, static) = { .arc_name = "ip4-multicast", .start_nodes = VNET_FEATURES ("ip4-input", "ip4-input-no-checksum"), + .end_node = "ip4-lookup-multicast", .arc_index_ptr = &ip4_main.lookup_main.mcast_feature_arc_index, }; diff --git a/vnet/vnet/ip/ip4_input.c b/vnet/vnet/ip/ip4_input.c index 69b1e5a83d2..1cf5e0b8517 100644 --- a/vnet/vnet/ip/ip4_input.c +++ b/vnet/vnet/ip/ip4_input.c @@ -109,8 +109,8 @@ ip4_input_inline (vlib_main_t * vm, { vlib_buffer_t *p0, *p1; ip4_header_t *ip0, *ip1; - u32 sw_if_index0, pi0, ip_len0, cur_len0, next0 = 0; - u32 sw_if_index1, pi1, ip_len1, cur_len1, next1 = 0; + u32 sw_if_index0, pi0, ip_len0, cur_len0, next0; + u32 sw_if_index1, pi1, ip_len1, cur_len1, next1; i32 len_diff0, len_diff1; u8 error0, error1, arc0, arc1; @@ -144,12 +144,33 @@ ip4_input_inline (vlib_main_t * vm, sw_if_index0 = vnet_buffer (p0)->sw_if_index[VLIB_RX]; sw_if_index1 = vnet_buffer (p1)->sw_if_index[VLIB_RX]; - arc0 = - ip4_address_is_multicast (&ip0->dst_address) ? - lm->mcast_feature_arc_index : lm->ucast_feature_arc_index; - arc1 = - ip4_address_is_multicast (&ip1->dst_address) ? - lm->mcast_feature_arc_index : lm->ucast_feature_arc_index; + error0 = error1 = IP4_ERROR_NONE; + + if (PREDICT_FALSE (ip4_address_is_multicast (&ip0->dst_address))) + { + arc0 = lm->mcast_feature_arc_index; + next0 = IP4_INPUT_NEXT_LOOKUP_MULTICAST; + } + else + { + arc0 = lm->ucast_feature_arc_index; + next0 = IP4_INPUT_NEXT_LOOKUP; + if (PREDICT_FALSE (ip0->ttl < 1)) + error0 = IP4_ERROR_TIME_EXPIRED; + } + + if (PREDICT_FALSE (ip4_address_is_multicast (&ip1->dst_address))) + { + arc1 = lm->mcast_feature_arc_index; + next1 = IP4_INPUT_NEXT_LOOKUP_MULTICAST; + } + else + { + arc1 = lm->ucast_feature_arc_index; + next1 = IP4_INPUT_NEXT_LOOKUP; + if (PREDICT_FALSE (ip1->ttl < 1)) + error1 = IP4_ERROR_TIME_EXPIRED; + } vnet_buffer (p0)->ip.adj_index[VLIB_RX] = ~0; vnet_buffer (p1)->ip.adj_index[VLIB_RX] = ~0; @@ -160,23 +181,14 @@ ip4_input_inline (vlib_main_t * vm, vlib_increment_simple_counter (cm, cpu_index, sw_if_index0, 1); vlib_increment_simple_counter (cm, cpu_index, sw_if_index1, 1); - error0 = error1 = IP4_ERROR_NONE; + /* Punt packets with options or wrong version. */ + if (PREDICT_FALSE (ip0->ip_version_and_header_length != 0x45)) + error0 = (ip0->ip_version_and_header_length & 0xf) != 5 ? + IP4_ERROR_OPTIONS : IP4_ERROR_VERSION; - /* Punt packets with options. */ - error0 = - (ip0->ip_version_and_header_length & 0xf) != - 5 ? IP4_ERROR_OPTIONS : error0; - error1 = - (ip1->ip_version_and_header_length & 0xf) != - 5 ? IP4_ERROR_OPTIONS : error1; - - /* Version != 4? Drop it. */ - error0 = - (ip0->ip_version_and_header_length >> 4) != - 4 ? IP4_ERROR_VERSION : error0; - error1 = - (ip1->ip_version_and_header_length >> 4) != - 4 ? IP4_ERROR_VERSION : error1; + if (PREDICT_FALSE (ip1->ip_version_and_header_length != 0x45)) + error1 = (ip1->ip_version_and_header_length & 0xf) != 5 ? + IP4_ERROR_OPTIONS : IP4_ERROR_VERSION; /* Verify header checksum. */ if (verify_checksum) @@ -186,31 +198,17 @@ ip4_input_inline (vlib_main_t * vm, ip4_partial_header_checksum_x1 (ip0, sum0); ip4_partial_header_checksum_x1 (ip1, sum1); - error0 = - 0xffff != - ip_csum_fold (sum0) ? IP4_ERROR_BAD_CHECKSUM : error0; - error1 = - 0xffff != - ip_csum_fold (sum1) ? IP4_ERROR_BAD_CHECKSUM : error1; + error0 = 0xffff != ip_csum_fold (sum0) ? + IP4_ERROR_BAD_CHECKSUM : error0; + error1 = 0xffff != ip_csum_fold (sum1) ? + IP4_ERROR_BAD_CHECKSUM : error1; } /* Drop fragmentation offset 1 packets. */ - error0 = - ip4_get_fragment_offset (ip0) == - 1 ? IP4_ERROR_FRAGMENT_OFFSET_ONE : error0; - error1 = - ip4_get_fragment_offset (ip1) == - 1 ? IP4_ERROR_FRAGMENT_OFFSET_ONE : error1; - - /* TTL < 1? Drop it. */ - error0 = (ip0->ttl < 1 - && arc0 == - lm->ucast_feature_arc_index) ? IP4_ERROR_TIME_EXPIRED : - error0; - error1 = (ip1->ttl < 1 - && arc1 == - lm->ucast_feature_arc_index) ? IP4_ERROR_TIME_EXPIRED : - error1; + error0 = ip4_get_fragment_offset (ip0) == 1 ? + IP4_ERROR_FRAGMENT_OFFSET_ONE : error0; + error1 = ip4_get_fragment_offset (ip1) == 1 ? + IP4_ERROR_FRAGMENT_OFFSET_ONE : error1; /* Verify lengths. */ ip_len0 = clib_net_to_host_u16 (ip0->length); @@ -242,10 +240,8 @@ ip4_input_inline (vlib_main_t * vm, next0 = IP4_INPUT_NEXT_ICMP_ERROR; } else - next0 = - error0 != - IP4_ERROR_OPTIONS ? IP4_INPUT_NEXT_DROP : - IP4_INPUT_NEXT_PUNT; + next0 = error0 != IP4_ERROR_OPTIONS ? + IP4_INPUT_NEXT_DROP : IP4_INPUT_NEXT_PUNT; } if (PREDICT_FALSE (error1 != IP4_ERROR_NONE)) { @@ -257,10 +253,8 @@ ip4_input_inline (vlib_main_t * vm, next1 = IP4_INPUT_NEXT_ICMP_ERROR; } else - next1 = - error1 != - IP4_ERROR_OPTIONS ? IP4_INPUT_NEXT_DROP : - IP4_INPUT_NEXT_PUNT; + next1 = error1 != IP4_ERROR_OPTIONS ? + IP4_INPUT_NEXT_DROP : IP4_INPUT_NEXT_PUNT; } vlib_validate_buffer_enqueue_x2 (vm, node, next_index, @@ -271,7 +265,7 @@ ip4_input_inline (vlib_main_t * vm, { vlib_buffer_t *p0; ip4_header_t *ip0; - u32 sw_if_index0, pi0, ip_len0, cur_len0, next0 = 0; + u32 sw_if_index0, pi0, ip_len0, cur_len0, next0; i32 len_diff0; u8 error0, arc0; @@ -287,25 +281,30 @@ ip4_input_inline (vlib_main_t * vm, sw_if_index0 = vnet_buffer (p0)->sw_if_index[VLIB_RX]; - arc0 = - ip4_address_is_multicast (&ip0->dst_address) ? - lm->mcast_feature_arc_index : lm->ucast_feature_arc_index; + error0 = IP4_ERROR_NONE; + + if (PREDICT_FALSE (ip4_address_is_multicast (&ip0->dst_address))) + { + arc0 = lm->mcast_feature_arc_index; + next0 = IP4_INPUT_NEXT_LOOKUP_MULTICAST; + } + else + { + arc0 = lm->ucast_feature_arc_index; + next0 = IP4_INPUT_NEXT_LOOKUP; + if (PREDICT_FALSE (ip0->ttl < 1)) + error0 = IP4_ERROR_TIME_EXPIRED; + } + vnet_buffer (p0)->ip.adj_index[VLIB_RX] = ~0; vnet_feature_arc_start (arc0, sw_if_index0, &next0, p0); vlib_increment_simple_counter (cm, cpu_index, sw_if_index0, 1); - error0 = IP4_ERROR_NONE; - - /* Punt packets with options. */ - error0 = - (ip0->ip_version_and_header_length & 0xf) != - 5 ? IP4_ERROR_OPTIONS : error0; - - /* Version != 4? Drop it. */ - error0 = - (ip0->ip_version_and_header_length >> 4) != - 4 ? IP4_ERROR_VERSION : error0; + /* Punt packets with options or wrong version. */ + if (PREDICT_FALSE (ip0->ip_version_and_header_length != 0x45)) + error0 = (ip0->ip_version_and_header_length & 0xf) != 5 ? + IP4_ERROR_OPTIONS : IP4_ERROR_VERSION; /* Verify header checksum. */ if (verify_checksum) @@ -323,12 +322,6 @@ ip4_input_inline (vlib_main_t * vm, ip4_get_fragment_offset (ip0) == 1 ? IP4_ERROR_FRAGMENT_OFFSET_ONE : error0; - /* TTL < 1? Drop it. */ - error0 = (ip0->ttl < 1 - && arc0 == - lm->ucast_feature_arc_index) ? IP4_ERROR_TIME_EXPIRED : - error0; - /* Verify lengths. */ ip_len0 = clib_net_to_host_u16 (ip0->length); @@ -350,10 +343,8 @@ ip4_input_inline (vlib_main_t * vm, next0 = IP4_INPUT_NEXT_ICMP_ERROR; } else - next0 = - error0 != - IP4_ERROR_OPTIONS ? IP4_INPUT_NEXT_DROP : - IP4_INPUT_NEXT_PUNT; + next0 = error0 != IP4_ERROR_OPTIONS ? + IP4_INPUT_NEXT_DROP : IP4_INPUT_NEXT_PUNT; } vlib_validate_buffer_enqueue_x1 (vm, node, next_index, |