Fix a bug reported by Daniel Mentz:
When authenticating DATA chunks some DATA chunks might get stuck when the MTU gets decreased via an ICMP message. Approved by: rrs (mentor) MFC after: immediately
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22c125a1b6
commit
d830c305ea
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=197257
@ -106,6 +106,7 @@ sctp_pathmtu_adjustment(struct sctp_inpcb *inp,
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uint16_t nxtsz)
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{
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struct sctp_tmit_chunk *chk;
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uint16_t overhead;
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/* Adjust that too */
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stcb->asoc.smallest_mtu = nxtsz;
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@ -114,13 +115,17 @@ sctp_pathmtu_adjustment(struct sctp_inpcb *inp,
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SCTP_PRINTF("sctp_pathmtu_adjust called inp:%p stcb:%p net:%p nxtsz:%d\n",
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inp, stcb, net, nxtsz);
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#endif
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overhead = IP_HDR_SIZE;
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if (sctp_auth_is_required_chunk(SCTP_DATA, stcb->asoc.peer_auth_chunks)) {
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overhead += sctp_get_auth_chunk_len(stcb->asoc.peer_hmac_id);
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}
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TAILQ_FOREACH(chk, &stcb->asoc.send_queue, sctp_next) {
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if ((chk->send_size + IP_HDR_SIZE) > nxtsz) {
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if ((chk->send_size + overhead) > nxtsz) {
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chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
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}
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}
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TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
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if ((chk->send_size + IP_HDR_SIZE) > nxtsz) {
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if ((chk->send_size + overhead) > nxtsz) {
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/*
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* For this guy we also mark for immediate resend
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* since we sent to big of chunk
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