diff options
| author | Kevin Cernekee <cernekee@chromium.org> | 2017-09-20 13:42:05 -0700 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2017-09-24 20:04:09 +0200 |
| commit | 13146a83951e045c810c37c5c11c2a016ebc0663 (patch) | |
| tree | 5decf48f78a082c0baac73aac5b60d0bc42b3d53 /slirp | |
| parent | e2aad34d73a9bd2b95275598daf05f190a02b899 (diff) | |
slirp: Add a special case for the NULL socket
NULL sockets are used for NDP, BOOTP, and other critical operations.
If the topmost mbuf in a NULL session is blocked pending resolution,
it may cause problems if it blocks other packets with a NULL socket.
So do not add mbufs with a NULL socket field to the same session.
Signed-off-by: Kevin Cernekee <cernekee@chromium.org>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Diffstat (limited to 'slirp')
| -rw-r--r-- | slirp/if.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/slirp/if.c b/slirp/if.c index 6262d77495..590753c658 100644 --- a/slirp/if.c +++ b/slirp/if.c @@ -73,14 +73,16 @@ if_output(struct socket *so, struct mbuf *ifm) * We mustn't put this packet back on the fastq (or we'll send it out of order) * XXX add cache here? */ - for (ifq = (struct mbuf *) slirp->if_batchq.qh_rlink; - (struct quehead *) ifq != &slirp->if_batchq; - ifq = ifq->ifq_prev) { - if (so == ifq->ifq_so) { - /* A match! */ - ifm->ifq_so = so; - ifs_insque(ifm, ifq->ifs_prev); - goto diddit; + if (so) { + for (ifq = (struct mbuf *) slirp->if_batchq.qh_rlink; + (struct quehead *) ifq != &slirp->if_batchq; + ifq = ifq->ifq_prev) { + if (so == ifq->ifq_so) { + /* A match! */ + ifm->ifq_so = so; + ifs_insque(ifm, ifq->ifs_prev); + goto diddit; + } } } |