/*ARGSUSED*/
static void
sctp_asconf_ack_unrec_parm(sctp_t *sctp, sctp_parm_hdr_t *ph,
sctp_parm_hdr_t *oph, sctp_faddr_t *fp, in6_addr_t *laddr)
{
ASSERT(ph);
sctp_error_event(sctp, (sctp_chunk_hdr_t *)ph);
}
/*ARGSUSED*/
static void
sctp_setprim_ack(sctp_t *sctp, sctp_parm_hdr_t *ph, sctp_parm_hdr_t *oph,
sctp_faddr_t *fp, in6_addr_t *laddr)
{
if (ph != NULL && ph->sph_type != htons(PARM_SUCCESS)) {
/* If the peer doesn't understand Add-IP, remember it */
if (ph->sph_type == htons(PARM_UNRECOGNIZED)) {
sctp->sctp_understands_addip = B_FALSE;
}
sctp_error_event(sctp, (sctp_chunk_hdr_t *)ph);
}
/* On success we do nothing */
}
/*ARGSUSED*/
static void
sctp_addip_ack(sctp_t *sctp, sctp_parm_hdr_t *ph, sctp_parm_hdr_t *oph,
sctp_faddr_t *fp, in6_addr_t *laddr)
{
in6_addr_t addr;
sctp_saddr_ipif_t *sp;
ipaddr_t *addr4;
boolean_t backout = B_FALSE;
uint16_t type;
uint32_t *cid;
/* could be an ASSERT */
if (laddr != NULL)
IN6_IPADDR_TO_V4MAPPED(0, laddr);
/* If the peer doesn't understand Add-IP, remember it */
if (ph != NULL && ph->sph_type == htons(PARM_UNRECOGNIZED)) {
sctp->sctp_understands_addip = B_FALSE;
backout = B_TRUE;
}
/*
* If OK, continue with the add / delete action, otherwise
* back out the action.
*/
if (ph != NULL && ph->sph_type != htons(PARM_SUCCESS)) {
backout = B_TRUE;
sctp_error_event(sctp, (sctp_chunk_hdr_t *)ph);
}
type = ntohs(oph->sph_type);
cid = (uint32_t *)(oph + 1);
oph = (sctp_parm_hdr_t *)(cid + 1);
if (oph->sph_type == htons(PARM_ADDR4)) {
addr4 = (ipaddr_t *)(oph + 1);
IN6_IPADDR_TO_V4MAPPED(*addr4, &addr);
} else {
bcopy(oph + 1, &addr, sizeof (addr));
}
/* Signifies that the address was sucessfully processed */
if (!backout && laddr != NULL)
*laddr = addr;
sp = sctp_saddr_lookup(sctp, &addr, 0);
ASSERT(sp != NULL);
if (type == PARM_ADD_IP) {
if (backout) {
sctp_del_saddr(sctp, sp);
} else {
sp->saddr_ipif_dontsrc = 0;
}
} else if (type == PARM_DEL_IP) {
if (backout) {
sp->saddr_ipif_delete_pending = 0;
sp->saddr_ipif_dontsrc = 0;
} else {
sctp_del_saddr(sctp, sp);
}
} else {
/* Must be either PARM_ADD_IP or PARM_DEL_IP */
ASSERT(0);
}
}
/*
* Returns 0 on non-fatal error, otherwise a system error on fatal
* error.
*/
int
sctp_handle_error(sctp_t *sctp, sctp_hdr_t *sctph, sctp_chunk_hdr_t *ch,
mblk_t *mp, ip_recv_attr_t *ira)
{
sctp_parm_hdr_t *errh;
sctp_chunk_hdr_t *uch;
if (ch->sch_len == htons(sizeof (*ch))) {
/* no error cause given */
return (0);
}
errh = (sctp_parm_hdr_t *)(ch + 1);
sctp_error_event(sctp, ch, B_FALSE);
switch (errh->sph_type) {
/*
* Both BAD_SID and NO_USR_DATA errors
* indicate a serious bug in our stack,
* so complain and abort the association.
*/
case SCTP_ERR_BAD_SID:
cmn_err(CE_WARN, "BUG! send to invalid SID");
sctp_send_abort(sctp, sctph->sh_verf, 0, NULL, 0, mp, 0, 0,
ira);
return (ECONNABORTED);
case SCTP_ERR_NO_USR_DATA:
cmn_err(CE_WARN, "BUG! no usr data");
sctp_send_abort(sctp, sctph->sh_verf, 0, NULL, 0, mp, 0, 0,
ira);
return (ECONNABORTED);
case SCTP_ERR_UNREC_CHUNK:
/* Pull out the unrecognized chunk type */
if (ntohs(errh->sph_len) < (sizeof (*errh) + sizeof (*uch))) {
/* Not enough to process */
return (0);
}
uch = (sctp_chunk_hdr_t *)(errh + 1);
if (uch->sch_id == CHUNK_ASCONF) {
/* Turn on ASCONF sending */
sctp->sctp_understands_asconf = B_FALSE;
/*
* Hand off to asconf to clear out the unacked
* asconf chunk.
*/
if (ntohs(uch->sch_len) !=
(ntohs(errh->sph_len) - sizeof (*errh))) {
/* malformed */
dprint(0, ("Malformed Unrec Chunk error\n"));
return (0);
}
sctp_asconf_free_cxmit(sctp, uch);
return (0);
}
/* Else drop it */
break;
default:
break;
}
return (0);
}
