diff options
Diffstat (limited to 'src/plugins/nat/out2in.c')
| -rwxr-xr-x | src/plugins/nat/out2in.c | 112 |
1 files changed, 74 insertions, 38 deletions
diff --git a/src/plugins/nat/out2in.c b/src/plugins/nat/out2in.c index 8c6cb482703..7c6fae6ec91 100755 --- a/src/plugins/nat/out2in.c +++ b/src/plugins/nat/out2in.c @@ -893,12 +893,11 @@ VLIB_NODE_FN (snat_out2in_node) (vlib_main_t * vm, dst_address /* changed member */ ); ip0->checksum = ip_csum_fold (sum0); + old_port0 = udp0->dst_port; + new_port0 = udp0->dst_port = s0->in2out.port; + if (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP)) { - old_port0 = tcp0->dst_port; - tcp0->dst_port = s0->in2out.port; - new_port0 = tcp0->dst_port; - sum0 = tcp0->checksum; sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t, @@ -912,9 +911,17 @@ VLIB_NODE_FN (snat_out2in_node) (vlib_main_t * vm, } else { - old_port0 = udp0->dst_port; - udp0->dst_port = s0->in2out.port; - udp0->checksum = 0; + if (PREDICT_FALSE (udp0->checksum)) + { + sum0 = udp0->checksum; + sum0 = ip_csum_update (sum0, old_addr0, new_addr0, + ip4_header_t, + dst_address /* changed member */ ); + sum0 = ip_csum_update (sum0, old_port0, new_port0, + ip4_header_t /* cheat */ , + length /* changed member */ ); + udp0->checksum = ip_csum_fold (sum0); + } udp_packets++; } @@ -1059,12 +1066,11 @@ VLIB_NODE_FN (snat_out2in_node) (vlib_main_t * vm, dst_address /* changed member */ ); ip1->checksum = ip_csum_fold (sum1); + old_port1 = udp1->dst_port; + new_port1 = udp1->dst_port = s1->in2out.port; + if (PREDICT_TRUE (proto1 == SNAT_PROTOCOL_TCP)) { - old_port1 = tcp1->dst_port; - tcp1->dst_port = s1->in2out.port; - new_port1 = tcp1->dst_port; - sum1 = tcp1->checksum; sum1 = ip_csum_update (sum1, old_addr1, new_addr1, ip4_header_t, @@ -1078,9 +1084,17 @@ VLIB_NODE_FN (snat_out2in_node) (vlib_main_t * vm, } else { - old_port1 = udp1->dst_port; - udp1->dst_port = s1->in2out.port; - udp1->checksum = 0; + if (PREDICT_FALSE (udp1->checksum)) + { + sum1 = udp1->checksum; + sum1 = ip_csum_update (sum1, old_addr1, new_addr1, + ip4_header_t, + dst_address /* changed member */ ); + sum1 = ip_csum_update (sum1, old_port1, new_port1, + ip4_header_t /* cheat */ , + length /* changed member */ ); + udp1->checksum = ip_csum_fold (sum1); + } udp_packets++; } @@ -1262,12 +1276,11 @@ VLIB_NODE_FN (snat_out2in_node) (vlib_main_t * vm, dst_address /* changed member */ ); ip0->checksum = ip_csum_fold (sum0); + old_port0 = udp0->dst_port; + new_port0 = udp0->dst_port = s0->in2out.port; + if (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP)) { - old_port0 = tcp0->dst_port; - tcp0->dst_port = s0->in2out.port; - new_port0 = tcp0->dst_port; - sum0 = tcp0->checksum; sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t, @@ -1281,9 +1294,17 @@ VLIB_NODE_FN (snat_out2in_node) (vlib_main_t * vm, } else { - old_port0 = udp0->dst_port; - udp0->dst_port = s0->in2out.port; - udp0->checksum = 0; + if (PREDICT_FALSE (udp0->checksum)) + { + sum0 = udp0->checksum; + sum0 = ip_csum_update (sum0, old_addr0, new_addr0, + ip4_header_t, + dst_address /* changed member */ ); + sum0 = ip_csum_update (sum0, old_port0, new_port0, + ip4_header_t /* cheat */ , + length /* changed member */ ); + udp0->checksum = ip_csum_fold (sum0); + } udp_packets++; } @@ -1573,12 +1594,11 @@ VLIB_NODE_FN (nat44_out2in_reass_node) (vlib_main_t * vm, if (PREDICT_FALSE (ip4_is_first_fragment (ip0))) { + old_port0 = udp0->dst_port; + new_port0 = udp0->dst_port = s0->in2out.port; + if (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP)) { - old_port0 = tcp0->dst_port; - tcp0->dst_port = s0->in2out.port; - new_port0 = tcp0->dst_port; - sum0 = tcp0->checksum; sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t, @@ -1589,11 +1609,16 @@ VLIB_NODE_FN (nat44_out2in_reass_node) (vlib_main_t * vm, length /* changed member */ ); tcp0->checksum = ip_csum_fold (sum0); } - else + else if (udp0->checksum) { - old_port0 = udp0->dst_port; - udp0->dst_port = s0->in2out.port; - udp0->checksum = 0; + sum0 = udp0->checksum; + sum0 = ip_csum_update (sum0, old_addr0, new_addr0, + ip4_header_t, + dst_address /* changed member */ ); + sum0 = ip_csum_update (sum0, old_port0, new_port0, + ip4_header_t /* cheat */ , + length /* changed member */ ); + udp0->checksum = ip_csum_fold (sum0); } } @@ -1797,26 +1822,30 @@ VLIB_NODE_FN (snat_out2in_fast_node) (vlib_main_t * vm, if (PREDICT_FALSE (new_port0 != udp0->dst_port)) { + old_port0 = udp0->dst_port; + udp0->dst_port = new_port0; + if (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP)) { - old_port0 = tcp0->dst_port; - tcp0->dst_port = new_port0; - sum0 = tcp0->checksum; sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t, dst_address /* changed member */ ); - sum0 = ip_csum_update (sum0, old_port0, new_port0, ip4_header_t /* cheat */ , length /* changed member */ ); tcp0->checksum = ip_csum_fold (sum0); } - else + else if (udp0->checksum) { - old_port0 = udp0->dst_port; - udp0->dst_port = new_port0; - udp0->checksum = 0; + sum0 = udp0->checksum; + sum0 = ip_csum_update (sum0, old_addr0, new_addr0, + ip4_header_t, + dst_address /* changed member */ ); + sum0 = ip_csum_update (sum0, old_port0, new_port0, + ip4_header_t /* cheat */ , + length /* changed member */ ); + udp0->checksum = ip_csum_fold (sum0); } } else @@ -1827,9 +1856,16 @@ VLIB_NODE_FN (snat_out2in_fast_node) (vlib_main_t * vm, sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t, dst_address /* changed member */ ); - tcp0->checksum = ip_csum_fold (sum0); } + else if (udp0->checksum) + { + sum0 = udp0->checksum; + sum0 = ip_csum_update (sum0, old_addr0, new_addr0, + ip4_header_t, + dst_address /* changed member */ ); + udp0->checksum = ip_csum_fold (sum0); + } } trace00: |