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[SCTP]: Do not increase rwnd when reading partial notification.
When a user reads a partial notification message, do not update rwnd since notifications must not be counted towards receive window. Tested-by: Oliver Roll <mail@oliroll.de> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
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1 changed files with 2 additions and 1 deletions
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@ -1911,6 +1911,7 @@ SCTP_STATIC int sctp_recvmsg(struct kiocb *iocb, struct sock *sk,
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* rwnd by that amount. If all the data in the skb is read,
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* rwnd is updated when the event is freed.
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*/
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if (!sctp_ulpevent_is_notification(event))
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sctp_assoc_rwnd_increase(event->asoc, copied);
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goto out;
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} else if ((event->msg_flags & MSG_NOTIFICATION) ||
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