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path: root/src/plugins/nat/out2in.c
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Diffstat (limited to 'src/plugins/nat/out2in.c')
-rwxr-xr-xsrc/plugins/nat/out2in.c108
1 files changed, 34 insertions, 74 deletions
diff --git a/src/plugins/nat/out2in.c b/src/plugins/nat/out2in.c
index 83c099d1bd2..8c6cb482703 100755
--- a/src/plugins/nat/out2in.c
+++ b/src/plugins/nat/out2in.c
@@ -893,9 +893,6 @@ 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;
@@ -915,17 +912,9 @@ VLIB_NODE_FN (snat_out2in_node) (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->dst_port;
+ udp0->dst_port = s0->in2out.port;
+ udp0->checksum = 0;
udp_packets++;
}
@@ -1070,11 +1059,12 @@ 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,
@@ -1088,17 +1078,9 @@ VLIB_NODE_FN (snat_out2in_node) (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->dst_port;
+ udp1->dst_port = s1->in2out.port;
+ udp1->checksum = 0;
udp_packets++;
}
@@ -1280,11 +1262,12 @@ 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,
@@ -1298,17 +1281,9 @@ VLIB_NODE_FN (snat_out2in_node) (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->dst_port;
+ udp0->dst_port = s0->in2out.port;
+ udp0->checksum = 0;
udp_packets++;
}
@@ -1598,11 +1573,12 @@ 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,
@@ -1613,16 +1589,11 @@ VLIB_NODE_FN (nat44_out2in_reass_node) (vlib_main_t * vm,
length /* changed member */ );
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->dst_port;
+ udp0->dst_port = s0->in2out.port;
+ udp0->checksum = 0;
}
}
@@ -1826,30 +1797,26 @@ 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 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->dst_port;
+ udp0->dst_port = new_port0;
+ udp0->checksum = 0;
}
}
else
@@ -1860,16 +1827,9 @@ 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);
- }
}
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