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path: root/src/plugins/nat/nat_det_in2out.c
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Diffstat (limited to 'src/plugins/nat/nat_det_in2out.c')
-rw-r--r--src/plugins/nat/nat_det_in2out.c69
1 files changed, 21 insertions, 48 deletions
diff --git a/src/plugins/nat/nat_det_in2out.c b/src/plugins/nat/nat_det_in2out.c
index 832a2bae947..918e1f5f9c0 100644
--- a/src/plugins/nat/nat_det_in2out.c
+++ b/src/plugins/nat/nat_det_in2out.c
@@ -392,8 +392,7 @@ VLIB_NODE_FN (snat_det_in2out_node) (vlib_main_t * vm,
}
}
- old_port0 = udp0->src_port;
- udp0->src_port = new_port0 = ses0->out.out_port;
+ new_port0 = ses0->out.out_port;
old_addr0.as_u32 = ip0->src_address.as_u32;
ip0->src_address.as_u32 = new_addr0.as_u32;
@@ -425,6 +424,9 @@ VLIB_NODE_FN (snat_det_in2out_node) (vlib_main_t * vm,
&& ses0->state == SNAT_SESSION_UNKNOWN)
ses0->state = SNAT_SESSION_TCP_ESTABLISHED;
+ old_port0 = tcp0->src;
+ tcp0->src = new_port0;
+
sum0 = tcp0->checksum;
sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
ip4_header_t,
@@ -438,20 +440,9 @@ VLIB_NODE_FN (snat_det_in2out_node) (vlib_main_t * vm,
else
{
ses0->state = SNAT_SESSION_UDP_ACTIVE;
-
- if (PREDICT_FALSE (udp0->checksum))
- {
- 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->src_port;
+ udp0->src_port = new_port0;
+ udp0->checksum = 0;
}
switch (ses0->state)
@@ -565,8 +556,7 @@ VLIB_NODE_FN (snat_det_in2out_node) (vlib_main_t * vm,
}
}
- old_port1 = udp1->src_port;
- udp1->src_port = new_port1 = ses1->out.out_port;
+ new_port1 = ses1->out.out_port;
old_addr1.as_u32 = ip1->src_address.as_u32;
ip1->src_address.as_u32 = new_addr1.as_u32;
@@ -598,6 +588,9 @@ VLIB_NODE_FN (snat_det_in2out_node) (vlib_main_t * vm,
&& ses1->state == SNAT_SESSION_UNKNOWN)
ses1->state = SNAT_SESSION_TCP_ESTABLISHED;
+ old_port1 = tcp1->src;
+ tcp1->src = new_port1;
+
sum1 = tcp1->checksum;
sum1 = ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32,
ip4_header_t,
@@ -611,20 +604,9 @@ VLIB_NODE_FN (snat_det_in2out_node) (vlib_main_t * vm,
else
{
ses1->state = SNAT_SESSION_UDP_ACTIVE;
-
- if (PREDICT_FALSE (udp1->checksum))
- {
- 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->src_port;
+ udp1->src_port = new_port1;
+ udp1->checksum = 0;
}
switch (ses1->state)
@@ -774,8 +756,7 @@ VLIB_NODE_FN (snat_det_in2out_node) (vlib_main_t * vm,
}
}
- old_port0 = udp0->src_port;
- udp0->src_port = new_port0 = ses0->out.out_port;
+ new_port0 = ses0->out.out_port;
old_addr0.as_u32 = ip0->src_address.as_u32;
ip0->src_address.as_u32 = new_addr0.as_u32;
@@ -807,6 +788,9 @@ VLIB_NODE_FN (snat_det_in2out_node) (vlib_main_t * vm,
&& ses0->state == SNAT_SESSION_UNKNOWN)
ses0->state = SNAT_SESSION_TCP_ESTABLISHED;
+ old_port0 = tcp0->src;
+ tcp0->src = new_port0;
+
sum0 = tcp0->checksum;
sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
ip4_header_t,
@@ -820,20 +804,9 @@ VLIB_NODE_FN (snat_det_in2out_node) (vlib_main_t * vm,
else
{
ses0->state = SNAT_SESSION_UDP_ACTIVE;
-
- if (PREDICT_FALSE (udp0->checksum))
- {
- 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->src_port;
+ udp0->src_port = new_port0;
+ udp0->checksum = 0;
}
switch (ses0->state)