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path: root/src/plugins/nat/nat_det_out2in.c
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Diffstat (limited to 'src/plugins/nat/nat_det_out2in.c')
-rw-r--r--src/plugins/nat/nat_det_out2in.c60
1 files changed, 27 insertions, 33 deletions
diff --git a/src/plugins/nat/nat_det_out2in.c b/src/plugins/nat/nat_det_out2in.c
index c4bd096deb1..45fba18b248 100644
--- a/src/plugins/nat/nat_det_out2in.c
+++ b/src/plugins/nat/nat_det_out2in.c
@@ -343,8 +343,7 @@ VLIB_NODE_FN (snat_det_out2in_node) (vlib_main_t * vm,
b0->error = node->errors[NAT_DET_OUT2IN_ERROR_NO_TRANSLATION];
goto trace0;
}
- old_port0 = udp0->dst_port;
- udp0->dst_port = new_port0 = ses0->in_port;
+ new_port0 = ses0->in_port;
old_addr0 = ip0->dst_address;
ip0->dst_address = new_addr0;
@@ -365,25 +364,24 @@ VLIB_NODE_FN (snat_det_out2in_node) (vlib_main_t * vm,
&& ses0->state == SNAT_SESSION_TCP_LAST_ACK)
snat_det_ses_close (dm0, ses0);
+ old_port0 = tcp0->dst;
+ tcp0->dst = new_port0;
+
sum0 = tcp0->checksum;
sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
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.as_u32, new_addr0.as_u32,
- 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;
}
trace0:
@@ -464,8 +462,7 @@ VLIB_NODE_FN (snat_det_out2in_node) (vlib_main_t * vm,
b1->error = node->errors[NAT_DET_OUT2IN_ERROR_NO_TRANSLATION];
goto trace1;
}
- old_port1 = udp1->dst_port;
- udp1->dst_port = new_port1 = ses1->in_port;
+ new_port1 = ses1->in_port;
old_addr1 = ip1->dst_address;
ip1->dst_address = new_addr1;
@@ -486,25 +483,24 @@ VLIB_NODE_FN (snat_det_out2in_node) (vlib_main_t * vm,
&& ses1->state == SNAT_SESSION_TCP_LAST_ACK)
snat_det_ses_close (dm1, ses1);
+ old_port1 = tcp1->dst;
+ tcp1->dst = new_port1;
+
sum1 = tcp1->checksum;
sum1 = ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32,
ip4_header_t,
dst_address /* changed member */ );
+
sum1 = ip_csum_update (sum1, old_port1, new_port1,
ip4_header_t /* cheat */ ,
length /* changed member */ );
tcp1->checksum = ip_csum_fold (sum1);
}
- else if (udp1->checksum)
+ else
{
- sum1 = udp1->checksum;
- sum1 = ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32,
- 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 = new_port1;
+ udp1->checksum = 0;
}
trace1:
@@ -618,8 +614,7 @@ VLIB_NODE_FN (snat_det_out2in_node) (vlib_main_t * vm,
b0->error = node->errors[NAT_DET_OUT2IN_ERROR_NO_TRANSLATION];
goto trace00;
}
- old_port0 = udp0->dst_port;
- udp0->dst_port = new_port0 = ses0->in_port;
+ new_port0 = ses0->in_port;
old_addr0 = ip0->dst_address;
ip0->dst_address = new_addr0;
@@ -640,25 +635,24 @@ VLIB_NODE_FN (snat_det_out2in_node) (vlib_main_t * vm,
&& ses0->state == SNAT_SESSION_TCP_LAST_ACK)
snat_det_ses_close (dm0, ses0);
+ old_port0 = tcp0->dst;
+ tcp0->dst = new_port0;
+
sum0 = tcp0->checksum;
sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
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.as_u32, new_addr0.as_u32,
- 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;
}
trace00: