diff options
Diffstat (limited to 'net/sctp/sm_make_chunk.c')
| -rw-r--r-- | net/sctp/sm_make_chunk.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c index 10f071cdf188..cc20bc39ee7c 100644 --- a/net/sctp/sm_make_chunk.c +++ b/net/sctp/sm_make_chunk.c @@ -89,8 +89,26 @@ static void sctp_control_release_owner(struct sk_buff *skb) { struct sctp_chunk *chunk = skb_shinfo(skb)->destructor_arg; - if (chunk->shkey) + if (chunk->shkey) { + struct sctp_shared_key *shkey = chunk->shkey; + struct sctp_association *asoc = chunk->asoc; + + /* refcnt == 2 and !list_empty mean after this release, it's + * not being used anywhere, and it's time to notify userland + * that this shkey can be freed if it's been deactivated. + */ + if (shkey->deactivated && !list_empty(&shkey->key_list) && + refcount_read(&shkey->refcnt) == 2) { + struct sctp_ulpevent *ev; + + ev = sctp_ulpevent_make_authkey(asoc, shkey->key_id, + SCTP_AUTH_FREE_KEY, + GFP_KERNEL); + if (ev) + asoc->stream.si->enqueue_event(&asoc->ulpq, ev); + } sctp_auth_shkey_release(chunk->shkey); + } } static void sctp_control_set_owner_w(struct sctp_chunk *chunk) |