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slirp: Make Socket structure IPv6 compatible

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This patch replaces foreign and local address/port couples in Socket
structure by 2 sockaddr_storage which can be casted in sockaddr_in.
Direct access to address and port is still possible thanks to some
\#define, so retrocompatibility of the existing code is assured.

The ss_family field of sockaddr_storage is declared after each socket
creation.

The whole structure is also saved/restored when a Qemu session is
saved/restored.

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>
This commit is contained in:
Guillaume Subiron 2015-12-19 22:24:58 +01:00 • committed by Jason Wang
parent 18137fba35
commit eae303ff23
7 changed files with 78 additions and 16 deletions
Download patch file Download diff file Expand all files Collapse all files

14
slirp/socket.c
View file

@ -437,8 +437,8 @@ sowrite(struct socket *so)
void
sorecvfrom(struct socket *so)
{
struct sockaddr_in addr;
socklen_t addrlen = sizeof(struct sockaddr_in);
struct sockaddr_storage addr;
socklen_t addrlen = sizeof(struct sockaddr_storage);
DEBUG_CALL("sorecvfrom");
DEBUG_ARG("so = %p", so);
@ -527,7 +527,13 @@ sorecvfrom(struct socket *so)
* If this packet was destined for CTL_ADDR,
* make it look like that's where it came from, done by udp_output
*/
udp_output(so, m, &addr);
switch (so->so_ffamily) {
case AF_INET:
udp_output(so, m, (struct sockaddr_in *) &addr);
break;
default:
break;
}
} /* rx error */
} /* if ping packet */
}
@ -619,6 +625,7 @@ tcp_listen(Slirp *slirp, uint32_t haddr, u_int hport, uint32_t laddr,
so->so_state &= SS_PERSISTENT_MASK;
so->so_state |= (SS_FACCEPTCONN | flags);
so->so_lfamily = AF_INET;
so->so_lport = lport; /* Kept in network format */
so->so_laddr.s_addr = laddr; /* Ditto */
@ -645,6 +652,7 @@ tcp_listen(Slirp *slirp, uint32_t haddr, u_int hport, uint32_t laddr,
qemu_setsockopt(s, SOL_SOCKET, SO_OOBINLINE, &opt, sizeof(int));
getsockname(s,(struct sockaddr *)&addr,&addrlen);
so->so_ffamily = AF_INET;
so->so_fport = addr.sin_port;
if (addr.sin_addr.s_addr == 0 || addr.sin_addr.s_addr == loopback_addr.s_addr)
so->so_faddr = slirp->vhost_addr;