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sctp: add subscribe per asoc 

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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2
include/net/sctp/structs.h
View File

@ -2077,6 +2077,8 @@ struct sctp_association {
int sent_cnt_removable;
__u16 subscribe;
__u64 abandoned_unsent[SCTP_PR_INDEX(MAX) + 1];
__u64 abandoned_sent[SCTP_PR_INDEX(MAX) + 1];
};

2
net/sctp/associola.c
View File

@ -135,6 +135,8 @@ static struct sctp_association *sctp_association_init(
*/
asoc->max_burst = sp->max_burst;
asoc->subscribe = sp->subscribe;
/* initialize association timers */
asoc->timeouts[SCTP_EVENT_TIMEOUT_T1_COOKIE] = asoc->rto_initial;
asoc->timeouts[SCTP_EVENT_TIMEOUT_T1_INIT] = asoc->rto_initial;

6
net/sctp/chunk.c
View File

@ -86,11 +86,10 @@ void sctp_datamsg_free(struct sctp_datamsg *msg)
/* Final destructruction of datamsg memory. */
static void sctp_datamsg_destroy(struct sctp_datamsg *msg)
{
struct sctp_association *asoc = NULL;
struct list_head *pos, *temp;
struct sctp_chunk *chunk;
struct sctp_sock *sp;
struct sctp_ulpevent *ev;
struct sctp_association *asoc = NULL;
int error = 0, notify;
/* If we failed, we may need to notify. */
@ -108,8 +107,7 @@ static void sctp_datamsg_destroy(struct sctp_datamsg *msg)
else
error = asoc->outqueue.error;
sp = sctp_sk(asoc->base.sk);
notify = sctp_ulpevent_type_enabled(sp->subscribe,
notify = sctp_ulpevent_type_enabled(asoc->subscribe,
SCTP_SEND_FAILED);
}

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);

7
net/sctp/stream_interleave.c
View File

@ -503,7 +503,7 @@ static int sctp_enqueue_event(struct sctp_ulpq *ulpq,
sk_incoming_cpu_update(sk);
}
if (!sctp_ulpevent_is_enabled(event, sp->subscribe))
if (!sctp_ulpevent_is_enabled(event, ulpq->asoc->subscribe))
goto out_free;
if (skb_list)
@ -992,16 +992,17 @@ static void sctp_intl_stream_abort_pd(struct sctp_ulpq *ulpq, __u16 sid,
__u32 mid, __u16 flags, gfp_t gfp)
{
struct sock *sk = ulpq->asoc->base.sk;
struct sctp_sock *sp = sctp_sk(sk);
struct sctp_ulpevent *ev = NULL;
if (!sctp_ulpevent_type_enabled(sp->subscribe,
if (!sctp_ulpevent_type_enabled(ulpq->asoc->subscribe,
SCTP_PARTIAL_DELIVERY_EVENT))
return;
ev = sctp_ulpevent_make_pdapi(ulpq->asoc, SCTP_PARTIAL_DELIVERY_ABORTED,
sid, mid, flags, gfp);
if (ev) {
struct sctp_sock *sp = sctp_sk(sk);
__skb_queue_tail(&sk->sk_receive_queue, sctp_event2skb(ev));
if (!sp->data_ready_signalled) {

4
net/sctp/ulpqueue.c
View File

@ -219,7 +219,7 @@ int sctp_ulpq_tail_event(struct sctp_ulpq *ulpq, struct sctp_ulpevent *event)
sk_incoming_cpu_update(sk);
}
/* Check if the user wishes to receive this event. */
if (!sctp_ulpevent_is_enabled(event, sp->subscribe))
if (!sctp_ulpevent_is_enabled(event, ulpq->asoc->subscribe))
goto out_free;
/* If we are in partial delivery mode, post to the lobby until
@ -1137,7 +1137,7 @@ void sctp_ulpq_abort_pd(struct sctp_ulpq *ulpq, gfp_t gfp)
sk = ulpq->asoc->base.sk;
sp = sctp_sk(sk);
if (sctp_ulpevent_type_enabled(sp->subscribe,
if (sctp_ulpevent_type_enabled(ulpq->asoc->subscribe,
SCTP_PARTIAL_DELIVERY_EVENT))
ev = sctp_ulpevent_make_pdapi(ulpq->asoc,
SCTP_PARTIAL_DELIVERY_ABORTED,