diff options
| -rw-r--r-- | src/plugins/snat/in2out.c | 45 | ||||
| -rw-r--r-- | src/plugins/snat/out2in.c | 43 |
2 files changed, 85 insertions, 3 deletions
diff --git a/src/plugins/snat/in2out.c b/src/plugins/snat/in2out.c index 20d99396292..a70892fd31d 100644 --- a/src/plugins/snat/in2out.c +++ b/src/plugins/snat/in2out.c @@ -113,8 +113,8 @@ static char * snat_in2out_error_strings[] = { typedef enum { SNAT_IN2OUT_NEXT_LOOKUP, SNAT_IN2OUT_NEXT_DROP, - SNAT_IN2OUT_NEXT_SLOW_PATH, SNAT_IN2OUT_NEXT_ICMP_ERROR, + SNAT_IN2OUT_NEXT_SLOW_PATH, SNAT_IN2OUT_N_NEXT, } snat_in2out_next_t; @@ -1562,6 +1562,16 @@ snat_det_in2out_node_fn (vlib_main_t * vm, sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX]; + if (PREDICT_FALSE(ip0->ttl == 1)) + { + vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0; + icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded, + ICMP4_time_exceeded_ttl_exceeded_in_transit, + 0); + next0 = SNAT_IN2OUT_NEXT_ICMP_ERROR; + goto trace0; + } + dm0 = snat_det_map_by_user(sm, &ip0->src_address); if (PREDICT_FALSE(!dm0)) { @@ -1684,6 +1694,16 @@ snat_det_in2out_node_fn (vlib_main_t * vm, sw_if_index1 = vnet_buffer(b1)->sw_if_index[VLIB_RX]; + if (PREDICT_FALSE(ip1->ttl == 1)) + { + vnet_buffer (b1)->sw_if_index[VLIB_TX] = (u32) ~ 0; + icmp4_error_set_vnet_buffer (b1, ICMP4_time_exceeded, + ICMP4_time_exceeded_ttl_exceeded_in_transit, + 0); + next1 = SNAT_IN2OUT_NEXT_ICMP_ERROR; + goto trace1; + } + dm1 = snat_det_map_by_user(sm, &ip1->src_address); if (PREDICT_FALSE(!dm1)) { @@ -1840,6 +1860,16 @@ snat_det_in2out_node_fn (vlib_main_t * vm, sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX]; + if (PREDICT_FALSE(ip0->ttl == 1)) + { + vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0; + icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded, + ICMP4_time_exceeded_ttl_exceeded_in_transit, + 0); + next0 = SNAT_IN2OUT_NEXT_ICMP_ERROR; + goto trace00; + } + dm0 = snat_det_map_by_user(sm, &ip0->src_address); if (PREDICT_FALSE(!dm0)) { @@ -1983,12 +2013,13 @@ VLIB_REGISTER_NODE (snat_det_in2out_node) = { .runtime_data_bytes = sizeof (snat_runtime_t), - .n_next_nodes = 2, + .n_next_nodes = 3, /* edit / add dispositions here */ .next_nodes = { [SNAT_IN2OUT_NEXT_DROP] = "error-drop", [SNAT_IN2OUT_NEXT_LOOKUP] = "ip4-lookup", + [SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error", }, }; @@ -2218,6 +2249,16 @@ snat_in2out_fast_static_map_fn (vlib_main_t * vm, sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX]; rx_fib_index0 = ip4_fib_table_get_index_for_sw_if_index(sw_if_index0); + if (PREDICT_FALSE(ip0->ttl == 1)) + { + vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0; + icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded, + ICMP4_time_exceeded_ttl_exceeded_in_transit, + 0); + next0 = SNAT_IN2OUT_NEXT_ICMP_ERROR; + goto trace0; + } + proto0 = ip_proto_to_snat_proto (ip0->protocol); if (PREDICT_FALSE (proto0 == ~0)) diff --git a/src/plugins/snat/out2in.c b/src/plugins/snat/out2in.c index 13355043658..b52402cedd5 100644 --- a/src/plugins/snat/out2in.c +++ b/src/plugins/snat/out2in.c @@ -1234,6 +1234,16 @@ snat_det_out2in_node_fn (vlib_main_t * vm, sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX]; + if (PREDICT_FALSE(ip0->ttl == 1)) + { + vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0; + icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded, + ICMP4_time_exceeded_ttl_exceeded_in_transit, + 0); + next0 = SNAT_OUT2IN_NEXT_ICMP_ERROR; + goto trace0; + } + key0.ext_host_addr = ip0->src_address; key0.ext_host_port = tcp0->src; key0.out_port = tcp0->dst; @@ -1329,6 +1339,16 @@ snat_det_out2in_node_fn (vlib_main_t * vm, sw_if_index1 = vnet_buffer(b1)->sw_if_index[VLIB_RX]; + if (PREDICT_FALSE(ip1->ttl == 1)) + { + vnet_buffer (b1)->sw_if_index[VLIB_TX] = (u32) ~ 0; + icmp4_error_set_vnet_buffer (b1, ICMP4_time_exceeded, + ICMP4_time_exceeded_ttl_exceeded_in_transit, + 0); + next1 = SNAT_OUT2IN_NEXT_ICMP_ERROR; + goto trace1; + } + key1.ext_host_addr = ip1->src_address; key1.ext_host_port = tcp1->src; key1.out_port = tcp1->dst; @@ -1455,6 +1475,16 @@ snat_det_out2in_node_fn (vlib_main_t * vm, sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX]; + if (PREDICT_FALSE(ip0->ttl == 1)) + { + vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0; + icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded, + ICMP4_time_exceeded_ttl_exceeded_in_transit, + 0); + next0 = SNAT_OUT2IN_NEXT_ICMP_ERROR; + goto trace00; + } + key0.ext_host_addr = ip0->src_address; key0.ext_host_port = tcp0->src; key0.out_port = tcp0->dst; @@ -1569,12 +1599,13 @@ VLIB_REGISTER_NODE (snat_det_out2in_node) = { .runtime_data_bytes = sizeof (snat_runtime_t), - .n_next_nodes = 2, + .n_next_nodes = SNAT_OUT2IN_N_NEXT, /* edit / add dispositions here */ .next_nodes = { [SNAT_OUT2IN_NEXT_DROP] = "error-drop", [SNAT_OUT2IN_NEXT_LOOKUP] = "ip4-lookup", + [SNAT_OUT2IN_NEXT_ICMP_ERROR] = "ip4-icmp-error", }, }; VLIB_NODE_FUNCTION_MULTIARCH (snat_det_out2in_node, snat_det_out2in_node_fn); @@ -1800,6 +1831,16 @@ snat_out2in_fast_node_fn (vlib_main_t * vm, vnet_feature_next (sw_if_index0, &next0, b0); + if (PREDICT_FALSE(ip0->ttl == 1)) + { + vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0; + icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded, + ICMP4_time_exceeded_ttl_exceeded_in_transit, + 0); + next0 = SNAT_OUT2IN_NEXT_ICMP_ERROR; + goto trace00; + } + proto0 = ip_proto_to_snat_proto (ip0->protocol); if (PREDICT_FALSE (proto0 == ~0)) |