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author | David Miller <davem@davemloft.net> | 2019-04-11 15:02:07 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2019-04-11 21:33:31 -0700 |
commit | 013b96ec64616b57fc631b304dfcecc5bc288f90 (patch) | |
tree | 0b4e504f19d268f8003d58a82b9cbbf249d36d1d /net/sctp | |
parent | 178ca044aa60cb05102148b635cb82f6986451a3 (diff) | |
download | linux-stable-013b96ec64616b57fc631b304dfcecc5bc288f90.tar.gz linux-stable-013b96ec64616b57fc631b304dfcecc5bc288f90.tar.bz2 linux-stable-013b96ec64616b57fc631b304dfcecc5bc288f90.zip |
sctp: Pass sk_buff_head explicitly to sctp_ulpq_tail_event().
Now the SKB list implementation assumption can be removed.
And now that we know that the list head is always non-NULL
we can remove the code blocks dealing with that as well.
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp')
-rw-r--r-- | net/sctp/stream_interleave.c | 2 | ||||
-rw-r--r-- | net/sctp/ulpqueue.c | 29 |
2 files changed, 12 insertions, 19 deletions
diff --git a/net/sctp/stream_interleave.c b/net/sctp/stream_interleave.c index 2c50627bdfdb..25e0b7e5189c 100644 --- a/net/sctp/stream_interleave.c +++ b/net/sctp/stream_interleave.c @@ -1317,7 +1317,7 @@ static int do_ulpq_tail_event(struct sctp_ulpq *ulpq, struct sctp_ulpevent *even skb_queue_head_init(&temp); __skb_queue_tail(&temp, sctp_event2skb(event)); - return sctp_ulpq_tail_event(ulpq, event); + return sctp_ulpq_tail_event(ulpq, &temp); } static struct sctp_stream_interleave sctp_stream_interleave_0 = { diff --git a/net/sctp/ulpqueue.c b/net/sctp/ulpqueue.c index a698f1a509bf..7cdc3623fa35 100644 --- a/net/sctp/ulpqueue.c +++ b/net/sctp/ulpqueue.c @@ -130,7 +130,7 @@ int sctp_ulpq_tail_data(struct sctp_ulpq *ulpq, struct sctp_chunk *chunk, */ if (event) { event_eor = (event->msg_flags & MSG_EOR) ? 1 : 0; - sctp_ulpq_tail_event(ulpq, event); + sctp_ulpq_tail_event(ulpq, &temp); } return event_eor; @@ -194,18 +194,17 @@ static int sctp_ulpq_clear_pd(struct sctp_ulpq *ulpq) return sctp_clear_pd(ulpq->asoc->base.sk, ulpq->asoc); } -/* If the SKB of 'event' is on a list, it is the first such member - * of that list. - */ -int sctp_ulpq_tail_event(struct sctp_ulpq *ulpq, struct sctp_ulpevent *event) +int sctp_ulpq_tail_event(struct sctp_ulpq *ulpq, struct sk_buff_head *skb_list) { struct sock *sk = ulpq->asoc->base.sk; struct sctp_sock *sp = sctp_sk(sk); - struct sk_buff_head *queue, *skb_list; - struct sk_buff *skb = sctp_event2skb(event); + struct sctp_ulpevent *event; + struct sk_buff_head *queue; + struct sk_buff *skb; int clear_pd = 0; - skb_list = (struct sk_buff_head *) skb->prev; + skb = __skb_peek(skb_list); + event = sctp_skb2event(skb); /* If the socket is just going to throw this away, do not * even try to deliver it. @@ -258,13 +257,7 @@ int sctp_ulpq_tail_event(struct sctp_ulpq *ulpq, struct sctp_ulpevent *event) } } - /* If we are harvesting multiple skbs they will be - * collected on a list. - */ - if (skb_list) - skb_queue_splice_tail_init(skb_list, queue); - else - __skb_queue_tail(queue, skb); + skb_queue_splice_tail_init(skb_list, queue); /* Did we just complete partial delivery and need to get * rolling again? Move pending data to the receive @@ -757,7 +750,7 @@ static void sctp_ulpq_reasm_drain(struct sctp_ulpq *ulpq) * sctp_ulpevent for very first SKB on the temp' list. */ if (event) - sctp_ulpq_tail_event(ulpq, event); + sctp_ulpq_tail_event(ulpq, &temp); } } @@ -957,7 +950,7 @@ static void sctp_ulpq_reap_ordered(struct sctp_ulpq *ulpq, __u16 sid) if (event) { /* see if we have more ordered that we can deliver */ sctp_ulpq_retrieve_ordered(ulpq, event); - sctp_ulpq_tail_event(ulpq, event); + sctp_ulpq_tail_event(ulpq, &temp); } } @@ -1087,7 +1080,7 @@ void sctp_ulpq_partial_delivery(struct sctp_ulpq *ulpq, skb_queue_head_init(&temp); __skb_queue_tail(&temp, sctp_event2skb(event)); - sctp_ulpq_tail_event(ulpq, event); + sctp_ulpq_tail_event(ulpq, &temp); sctp_ulpq_set_pd(ulpq); return; } |