diff options
Diffstat (limited to 'src/plugins/nat/out2in.c')
| -rwxr-xr-x | src/plugins/nat/out2in.c | 58 |
1 files changed, 54 insertions, 4 deletions
diff --git a/src/plugins/nat/out2in.c b/src/plugins/nat/out2in.c index ac47a56eb68..142c5ddb175 100755 --- a/src/plugins/nat/out2in.c +++ b/src/plugins/nat/out2in.c @@ -311,6 +311,43 @@ icmp_get_ed_key(ip4_header_t *ip0, nat_ed_ses_key_t *p_key0) return 0; } +static void +create_bypass_for_fwd(snat_main_t * sm, ip4_header_t * ip) +{ + nat_ed_ses_key_t key; + clib_bihash_kv_16_8_t kv; + udp_header_t *udp; + + if (ip->protocol == IP_PROTOCOL_ICMP) + { + if (icmp_get_ed_key (ip, &key)) + return; + } + else if (ip->protocol == IP_PROTOCOL_UDP || ip->protocol == IP_PROTOCOL_TCP) + { + udp = ip4_next_header(ip); + key.r_addr = ip->src_address; + key.l_addr = ip->dst_address; + key.proto = ip->protocol; + key.l_port = udp->dst_port; + key.r_port = udp->src_port; + } + else + { + key.r_addr = ip->src_address; + key.l_addr = ip->dst_address; + key.proto = ip->protocol; + key.l_port = key.r_port = 0; + } + key.fib_index = 0; + kv.key[0] = key.as_u64[0]; + kv.key[1] = key.as_u64[1]; + kv.value = ~0ULL; + + if (clib_bihash_add_del_16_8 (&sm->in2out_ed, &kv, 1)) + clib_warning ("in2out_ed key add failed"); +} + /** * Get address and port values to be used for ICMP packet translation * and create session if needed @@ -382,6 +419,7 @@ u32 icmp_match_out2in_slow(snat_main_t *sm, vlib_node_runtime_t *node, } else { + create_bypass_for_fwd(sm, ip0); dont_translate = 1; goto out; } @@ -1116,7 +1154,10 @@ snat_out2in_node_fn (vlib_main_t * vm, goto trace0; } else - goto trace0; + { + create_bypass_for_fwd(sm, ip0); + goto trace0; + } } /* Create session initiated by host from external network */ @@ -1280,7 +1321,10 @@ snat_out2in_node_fn (vlib_main_t * vm, goto trace1; } else - goto trace1; + { + create_bypass_for_fwd(sm, ip1); + goto trace1; + } } /* Create session initiated by host from external network */ @@ -1480,7 +1524,10 @@ snat_out2in_node_fn (vlib_main_t * vm, goto trace00; } else - goto trace00; + { + create_bypass_for_fwd(sm, ip0); + goto trace00; + } } /* Create session initiated by host from external network */ @@ -1720,7 +1767,10 @@ nat44_out2in_reass_node_fn (vlib_main_t * vm, goto trace0; } else - goto trace0; + { + create_bypass_for_fwd(sm, ip0); + goto trace0; + } } /* Create session initiated by host from external network */ |