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slirp: Factorizing and cleaning solookup()

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solookup() was only compatible with TCP. Having the socket list in
argument, it is now compatible with UDP too.

Some optimization code is factorized inside the function (the function
look at the last returned result before browsing the complete socket
list).

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 22:25:00 +01:00 • committed by Jason Wang
parent 5379229a27
commit a5fd24aa6d
4 changed files with 31 additions and 43 deletions
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21
slirp/udp.c
View file

@ -151,25 +151,8 @@ udp_input(register struct mbuf *m, int iphlen)
/*
* Locate pcb for datagram.
*/
so = slirp->udp_last_so;
if (so == &slirp->udb || so->so_lport != uh->uh_sport ||
so->so_laddr.s_addr != ip->ip_src.s_addr) {
struct socket *tmp;
for (tmp = slirp->udb.so_next; tmp != &slirp->udb;
tmp = tmp->so_next) {
if (tmp->so_lport == uh->uh_sport &&
tmp->so_laddr.s_addr == ip->ip_src.s_addr) {
so = tmp;
break;
}
}
if (tmp == &slirp->udb) {
so = NULL;
} else {
slirp->udp_last_so = so;
}
}
so = solookup(&slirp->udp_last_so, &slirp->udb,
ip->ip_src, uh->uh_sport, (struct in_addr) {0}, 0);
if (so == NULL) {
/*