path: root/slirp/socket.h
diff options
authorGuillaume Subiron <maethor@subiron.org>2015-12-19 22:24:59 +0100
committerJason Wang <jasowang@redhat.com>2016-02-04 13:22:06 +0800
commit5379229a2708df3a1506113315214c3ce5325859 (patch)
tree3b7634e203f64ffc5497bae41b8e37f87831a801 /slirp/socket.h
parenteae303ff23f51259eddc8856c71453d887ffe51a (diff)
slirp: Factorizing address translation
This patch factorizes some duplicate code into a new function, sotranslate_out(). This function perform the address translation when a packet is transmitted to the host network. If the packet is destinated to the host, the loopback address is used, and if the packet is destinated to the virtual DNS, the real DNS address is used. This code is just a copy of the existent, but factorized and ready to manage the IPv6 case. On the same model, the major part of udp_output() code is moved into a new sotranslate_in(). This function is directly used in sorecvfrom(), like sotranslate_out() in sosendto(). udp_output() becoming useless, it is removed and udp_output2() is renamed into udp_output(). This adds consistency with the udp6_output() function introduced by further patches. Lastly, this factorizes some duplicate code into sotranslate_accept(), which performs the address translation when a connection is established on the host for port forwarding: if it comes from localhost, the host virtual address is used instead. This prepares for IPv6 support. Signed-off-by: Guillaume Subiron <maethor@subiron.org> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'slirp/socket.h')
1 files changed, 5 insertions, 0 deletions
diff --git a/slirp/socket.h b/slirp/socket.h
index e854903418..b27bbb2c59 100644
--- a/slirp/socket.h
+++ b/slirp/socket.h
@@ -105,4 +105,9 @@ struct iovec; /* For win32 */
size_t sopreprbuf(struct socket *so, struct iovec *iov, int *np);
int soreadbuf(struct socket *so, const char *buf, int size);
+void sotranslate_out(struct socket *, struct sockaddr_storage *);
+void sotranslate_in(struct socket *, struct sockaddr_storage *);
+void sotranslate_accept(struct socket *);
#endif /* _SOCKET_H_ */