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sctp: minor improvements in sctp_get_frag_point 

MFC after:	3 days
This commit is contained in:
Michael Tuexen 2021-12-28 10:23:31 +01:00
parent ca0dd19f09
commit a7ba00a438
1 changed files with 4 additions and 2 deletions
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6
sys/netinet/sctp_output.c
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@ -6237,13 +6237,15 @@ sctp_get_frag_point(struct sctp_tcb *stcb)
overhead += sctp_get_auth_chunk_len(asoc->peer_hmac_id);
}
} else {
overhead += sizeof(struct sctp_idata_chunk);
overhead += sizeof(struct sctp_data_chunk);
if (sctp_auth_is_required_chunk(SCTP_DATA, asoc->peer_auth_chunks)) {
overhead += sctp_get_auth_chunk_len(asoc->peer_hmac_id);
}
}
KASSERT(overhead % 4 == 0,
("overhead (%u) not a multiple of 4", overhead));
/* Consider padding. */
if (asoc->smallest_mtu % 4) {
if (asoc->smallest_mtu % 4 > 0) {
overhead += (asoc->smallest_mtu % 4);
}
KASSERT(asoc->smallest_mtu > overhead,