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sctp: update the vtag for INIT and INIT-ACK chunks

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This is needed in case of responding with an ABORT to an INIT-ACK.
This commit is contained in:
Michael Tuexen 2021-04-30 13:31:38 +02:00
parent cd945dc08a
commit e010d20032
1 changed files with 5 additions and 4 deletions
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9
sys/netinet/sctputil.c
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@ -4553,7 +4553,7 @@ sctp_handle_ootb(struct mbuf *m, int iphlen, int offset,
* if there is return 1, else return 0. * if there is return 1, else return 0.
*/ */
int int
sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t *vtagfill) sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t *vtag)
{ {
struct sctp_chunkhdr *ch; struct sctp_chunkhdr *ch;
struct sctp_init_chunk *init_chk, chunk_buf; struct sctp_init_chunk *init_chk, chunk_buf;
@ -4574,12 +4574,13 @@ sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t *vtagfill)
/* yep, tell them */ /* yep, tell them */
return (1); return (1);
} }
if (ch->chunk_type == SCTP_INITIATION) { if ((ch->chunk_type == SCTP_INITIATION) ||
(ch->chunk_type == SCTP_INITIATION_ACK)) {
/* need to update the Vtag */ /* need to update the Vtag */
init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m, init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m,
offset, sizeof(*init_chk), (uint8_t *)&chunk_buf); offset, sizeof(struct sctp_init_chunk), (uint8_t *)&chunk_buf);
if (init_chk != NULL) { if (init_chk != NULL) {
*vtagfill = ntohl(init_chk->init.initiate_tag); *vtag = ntohl(init_chk->init.initiate_tag);
} }
} }
/* Nope, move to the next chunk */ /* Nope, move to the next chunk */