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authorDavid Gibson <david@gibson.dropbear.id.au>2024-07-18 15:26:43 +1000
committerStefano Brivio <sbrivio@redhat.com>2024-07-19 18:33:29 +0200
commit060f24e310b71f8813dbbc561a2e5a59d21feae0 (patch)
tree0b2d8532c057f97ec5f51840c1a4daeb12f79f23 /contrib/selinux
parent4cd753e65c591732b84c455b8eb9af44d09155cd (diff)
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flow, tcp: Flow based NAT and port forwarding for TCP
Currently the code to translate host side addresses and ports to guest side addresses and ports, and vice versa, is scattered across the TCP code. This includes both port redirection as controlled by the -t and -T options, and our special case NAT controlled by the --no-map-gw option. Gather this logic into fwd_nat_from_*() functions for each input interface in fwd.c which take protocol and address information for the initiating side and generates the pif and address information for the forwarded side. This performs any NAT or port forwarding needed. We create a flow_target() helper which applies those forwarding functions as needed to automatically move a flow from INI to TGT state. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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