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Diffstat (limited to 'src/plugins/nat/in2out.c')
-rwxr-xr-xsrc/plugins/nat/in2out.c110
1 files changed, 36 insertions, 74 deletions
diff --git a/src/plugins/nat/in2out.c b/src/plugins/nat/in2out.c
index 802202d7939..c69bc61236b 100755
--- a/src/plugins/nat/in2out.c
+++ b/src/plugins/nat/in2out.c
@@ -1075,11 +1075,12 @@ snat_in2out_node_fn_inline (vlib_main_t * vm,
src_address /* changed member */ );
ip0->checksum = ip_csum_fold (sum0);
- old_port0 = udp0->src_port;
- new_port0 = udp0->src_port = s0->out2in.port;
-
if (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP))
{
+ old_port0 = tcp0->src_port;
+ tcp0->src_port = s0->out2in.port;
+ new_port0 = tcp0->src_port;
+
sum0 = tcp0->checksum;
sum0 = ip_csum_update (sum0, old_addr0, new_addr0,
ip4_header_t,
@@ -1093,17 +1094,9 @@ snat_in2out_node_fn_inline (vlib_main_t * vm,
}
else
{
- 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);
- }
+ old_port0 = udp0->src_port;
+ udp0->src_port = s0->out2in.port;
+ udp0->checksum = 0;
udp_packets++;
}
@@ -1271,11 +1264,12 @@ snat_in2out_node_fn_inline (vlib_main_t * vm,
src_address /* changed member */ );
ip1->checksum = ip_csum_fold (sum1);
- old_port1 = udp1->src_port;
- new_port1 = udp1->src_port = s1->out2in.port;
-
if (PREDICT_TRUE (proto1 == SNAT_PROTOCOL_TCP))
{
+ old_port1 = tcp1->src_port;
+ tcp1->src_port = s1->out2in.port;
+ new_port1 = tcp1->src_port;
+
sum1 = tcp1->checksum;
sum1 = ip_csum_update (sum1, old_addr1, new_addr1,
ip4_header_t,
@@ -1289,17 +1283,9 @@ snat_in2out_node_fn_inline (vlib_main_t * vm,
}
else
{
- 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);
- }
+ old_port1 = udp1->src_port;
+ udp1->src_port = s1->out2in.port;
+ udp1->checksum = 0;
udp_packets++;
}
@@ -1502,11 +1488,12 @@ snat_in2out_node_fn_inline (vlib_main_t * vm,
src_address /* changed member */ );
ip0->checksum = ip_csum_fold (sum0);
- old_port0 = udp0->src_port;
- new_port0 = udp0->src_port = s0->out2in.port;
-
if (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP))
{
+ old_port0 = tcp0->src_port;
+ tcp0->src_port = s0->out2in.port;
+ new_port0 = tcp0->src_port;
+
sum0 = tcp0->checksum;
sum0 = ip_csum_update (sum0, old_addr0, new_addr0,
ip4_header_t,
@@ -1520,17 +1507,9 @@ snat_in2out_node_fn_inline (vlib_main_t * vm,
}
else
{
- 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);
- }
+ old_port0 = udp0->src_port;
+ udp0->src_port = s0->out2in.port;
+ udp0->checksum = 0;
udp_packets++;
}
@@ -1890,11 +1869,12 @@ VLIB_NODE_FN (nat44_in2out_reass_node) (vlib_main_t * vm,
if (PREDICT_FALSE (ip4_is_first_fragment (ip0)))
{
- old_port0 = udp0->src_port;
- new_port0 = udp0->src_port = s0->out2in.port;
-
if (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP))
{
+ old_port0 = tcp0->src_port;
+ tcp0->src_port = s0->out2in.port;
+ new_port0 = tcp0->src_port;
+
sum0 = tcp0->checksum;
sum0 = ip_csum_update (sum0, old_addr0, new_addr0,
ip4_header_t,
@@ -1904,16 +1884,11 @@ VLIB_NODE_FN (nat44_in2out_reass_node) (vlib_main_t * vm,
length /* changed member */ );
tcp0->checksum = ip_csum_fold (sum0);
}
- else if (PREDICT_FALSE (udp0->checksum))
+ else
{
- 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);
+ old_port0 = udp0->src_port;
+ udp0->src_port = s0->out2in.port;
+ udp0->checksum = 0;
}
}
@@ -2124,11 +2099,11 @@ VLIB_NODE_FN (snat_in2out_fast_node) (vlib_main_t * vm,
if (PREDICT_FALSE (new_port0 != udp0->dst_port))
{
- old_port0 = udp0->src_port;
- udp0->src_port = new_port0;
-
if (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP))
{
+ old_port0 = tcp0->src_port;
+ tcp0->src_port = new_port0;
+
sum0 = tcp0->checksum;
sum0 = ip_csum_update (sum0, old_addr0, new_addr0,
ip4_header_t,
@@ -2139,16 +2114,11 @@ VLIB_NODE_FN (snat_in2out_fast_node) (vlib_main_t * vm,
mss_clamping (sm, tcp0, &sum0);
tcp0->checksum = ip_csum_fold (sum0);
}
- else if (udp0->checksum)
+ else
{
- 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);
+ old_port0 = udp0->src_port;
+ udp0->src_port = new_port0;
+ udp0->checksum = 0;
}
}
else
@@ -2162,14 +2132,6 @@ VLIB_NODE_FN (snat_in2out_fast_node) (vlib_main_t * vm,
mss_clamping (sm, tcp0, &sum0);
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);
- }
}
/* Hairpinning */