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sctp: add subscribe per asoc

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The member subscribe should be per asoc, so that sockopt SCTP_EVENT
in the next patch can subscribe a event from one asoc only.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Xin Long 2018-11-18 16:08:52 +08:00 • committed by David S. Miller
parent 2cc0eeb676
commit a1e3a0590f
6 changed files with 17 additions and 10 deletions
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6
net/sctp/socket.c
View file

@ -2307,6 +2307,7 @@ static int sctp_setsockopt_events(struct sock *sk, char __user *optval,
struct sctp_event_subscribe subscribe;
__u8 *sn_type = (__u8 *)&subscribe;
struct sctp_sock *sp = sctp_sk(sk);
struct sctp_association *asoc;
int i;
if (optlen > sizeof(struct sctp_event_subscribe))
@ -2319,14 +2320,17 @@ static int sctp_setsockopt_events(struct sock *sk, char __user *optval,
sctp_ulpevent_type_set(&sp->subscribe, SCTP_SN_TYPE_BASE + i,
sn_type[i]);
list_for_each_entry(asoc, &sp->ep->asocs, asocs)
asoc->subscribe = sctp_sk(sk)->subscribe;
/* At the time when a user app subscribes to SCTP_SENDER_DRY_EVENT,
* if there is no data to be sent or retransmit, the stack will
* immediately send up this notification.
*/
if (sctp_ulpevent_type_enabled(sp->subscribe, SCTP_SENDER_DRY_EVENT)) {
struct sctp_association *asoc = sctp_id2assoc(sk, 0);
struct sctp_ulpevent *event;
asoc = sctp_id2assoc(sk, 0);
if (asoc && sctp_outq_is_empty(&asoc->outqueue)) {
event = sctp_ulpevent_make_sender_dry_event(asoc,
GFP_USER | __GFP_NOWARN);