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sctp: add support for the process of unordered idata

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Unordered idata process is more complicated than unordered data:

 - It has to add mid into sctp_stream_out to save the next mid value,
   which is separated from ordered idata's.

 - To support pd for unordered idata, another mid and pd_mode need to
   be added to save the message id and pd state in sctp_stream_in.

 - To make  unordered idata reasm easier, it adds a new event queue
   to save frags for idata.

The patch mostly adds the samilar reasm functions for unordered idata
as ordered idata's, and also adjusts some other codes on assign_mid,
abort_pd and ulpevent_data for idata.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Xin Long
2017-12-08 21:04:09 +08:00
committed by David S. Miller
parent 65f5e35783
commit 132282386f
5 changed files with 392 additions and 28 deletions
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5
net/sctp/ulpqueue.c
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@@ -60,6 +60,7 @@ struct sctp_ulpq *sctp_ulpq_init(struct sctp_ulpq *ulpq,
ulpq->asoc = asoc;
skb_queue_head_init(&ulpq->reasm);
skb_queue_head_init(&ulpq->reasm_uo);
skb_queue_head_init(&ulpq->lobby);
ulpq->pd_mode = 0;
@@ -83,6 +84,10 @@ void sctp_ulpq_flush(struct sctp_ulpq *ulpq)
sctp_ulpevent_free(event);
}
while ((skb = __skb_dequeue(&ulpq->reasm_uo)) != NULL) {
event = sctp_skb2event(skb);
sctp_ulpevent_free(event);
}
}
/* Dispose of a ulpqueue. */