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Fix the handling of unordered fragmented user messages using DATA chunks.

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There were two bugs:
* There was an accounting bug resulting in reporting a too small a_rwnd.
* There are a bug when abandoning messages in the reassembly queue.

MFC after:	4 weeks
This commit is contained in:
Michael Tuexen 2016-09-21 08:28:18 +00:00
parent 643f6f47fd
commit 5cb9165556
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=306082
1 changed files with 5 additions and 0 deletions
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5
sys/netinet/sctp_indata.c
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@ -809,6 +809,8 @@ sctp_handle_old_unordered_data(struct sctp_tcb *stcb,
tchk = TAILQ_FIRST(&control->reasm);
if (tchk->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG) {
TAILQ_REMOVE(&control->reasm, tchk, sctp_next);
asoc->size_on_reasm_queue -= tchk->send_size;
sctp_ucount_decr(asoc->cnt_on_reasm_queue);
nc->first_frag_seen = 1;
nc->fsn_included = tchk->rec.data.fsn_num;
nc->data = tchk->data;
@ -5322,6 +5324,9 @@ sctp_flush_reassm_for_str_seq(struct sctp_tcb *stcb,
/* Not found */
return;
}
if (old && !ordered && SCTP_TSN_GT(control->fsn_included, cumtsn)) {
return;
}
TAILQ_FOREACH_SAFE(chk, &control->reasm, sctp_next, nchk) {
/* Purge hanging chunks */
if (old && (ordered == 0)) {