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slirp: fix clearing ifq_so from pending packets 

The if_fastq and if_batchq contain not only packets, but queues of packets
for the same socket. When sofree frees a socket, it thus has to clear ifq_so
from all the packets from the queues, not only the first.

Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Cc: qemu-stable@nongnu.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Samuel Thibault 2017-08-25 01:35:53 +02:00 committed by Peter Maydell
parent 29c8564a7d
commit 1201d30851
1 changed files with 23 additions and 16 deletions
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39
slirp/socket.c
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@ -59,6 +59,27 @@ socreate(Slirp *slirp)
return(so);
}
/*
* Remove references to so from the given message queue.
*/
static void
soqfree(struct socket *so, struct quehead *qh)
{
struct mbuf *ifq;
for (ifq = (struct mbuf *) qh->qh_link;
(struct quehead *) ifq != qh;
ifq = ifq->ifq_next) {
if (ifq->ifq_so == so) {
struct mbuf *ifm;
ifq->ifq_so = NULL;
for (ifm = ifq->ifs_next; ifm != ifq; ifm = ifm->ifs_next) {
ifm->ifq_so = NULL;
}
}
}
}
/*
* remque and free a socket, clobber cache
*/
@ -66,23 +87,9 @@ void
sofree(struct socket *so)
{
Slirp *slirp = so->slirp;
struct mbuf *ifm;
for (ifm = (struct mbuf *) slirp->if_fastq.qh_link;
(struct quehead *) ifm != &slirp->if_fastq;
ifm = ifm->ifq_next) {
if (ifm->ifq_so == so) {
ifm->ifq_so = NULL;
}
}
for (ifm = (struct mbuf *) slirp->if_batchq.qh_link;
(struct quehead *) ifm != &slirp->if_batchq;
ifm = ifm->ifq_next) {
if (ifm->ifq_so == so) {
ifm->ifq_so = NULL;
}
}
soqfree(so, &slirp->if_fastq);
soqfree(so, &slirp->if_batchq);
if (so->so_emu==EMU_RSH && so->extra) {
sofree(so->extra);