/*
* Bind the sctp_t to a sockaddr, which includes an address and other
* information, such as port or flowinfo.
*/
int
sctp_bind(sctp_t *sctp, struct sockaddr *sa, socklen_t len)
{
int user_specified;
boolean_t bind_to_req_port_only;
in_port_t requested_port;
in_port_t allocated_port;
int err = 0;
ASSERT(sctp != NULL);
ASSERT(sa);
RUN_SCTP(sctp);
if (sctp->sctp_state > SCTPS_BOUND) {
err = EINVAL;
goto done;
}
switch (sa->sa_family) {
case AF_INET:
if (len < sizeof (struct sockaddr_in) ||
sctp->sctp_family == AF_INET6) {
err = EINVAL;
goto done;
}
requested_port = ntohs(((struct sockaddr_in *)sa)->sin_port);
break;
case AF_INET6:
if (len < sizeof (struct sockaddr_in6) ||
sctp->sctp_family == AF_INET) {
err = EINVAL;
goto done;
}
requested_port = ntohs(((struct sockaddr_in6 *)sa)->sin6_port);
/* Set the flowinfo. */
sctp->sctp_ip6h->ip6_vcf =
(IPV6_DEFAULT_VERS_AND_FLOW & IPV6_VERS_AND_FLOW_MASK) |
(((struct sockaddr_in6 *)sa)->sin6_flowinfo &
~IPV6_VERS_AND_FLOW_MASK);
break;
default:
err = EAFNOSUPPORT;
goto done;
}
bind_to_req_port_only = requested_port == 0 ? B_FALSE : B_TRUE;
err = sctp_select_port(sctp, &requested_port, &user_specified);
if (err != 0)
goto done;
if ((err = sctp_bind_add(sctp, sa, 1, B_TRUE,
user_specified == 1 ? htons(requested_port) : 0)) != 0) {
goto done;
}
err = sctp_bindi(sctp, requested_port, bind_to_req_port_only,
user_specified, &allocated_port);
if (err != 0) {
sctp_free_saddrs(sctp);
} else {
ASSERT(sctp->sctp_state == SCTPS_BOUND);
}
done:
WAKE_SCTP(sctp);
return (err);
}
/*
* Bind the sctp_t to a sockaddr, which includes an address and other
* information, such as port or flowinfo.
*/
int
sctp_bind(sctp_t *sctp, struct sockaddr *sa, socklen_t len)
{
int user_specified;
boolean_t bind_to_req_port_only;
in_port_t requested_port;
in_port_t allocated_port;
int err = 0;
conn_t *connp = sctp->sctp_connp;
uint_t scope_id;
sin_t *sin;
sin6_t *sin6;
ASSERT(sctp != NULL);
RUN_SCTP(sctp);
if ((sctp->sctp_state >= SCTPS_BOUND) ||
(sctp->sctp_connp->conn_state_flags & CONN_CLOSING) ||
(sa == NULL || len == 0)) {
/*
* Multiple binds not allowed for any SCTP socket
* Also binding with null address is not supported.
*/
err = EINVAL;
goto done;
}
switch (sa->sa_family) {
case AF_INET:
sin = (sin_t *)sa;
if (len < sizeof (struct sockaddr_in) ||
connp->conn_family == AF_INET6) {
err = EINVAL;
goto done;
}
requested_port = ntohs(sin->sin_port);
break;
case AF_INET6:
sin6 = (sin6_t *)sa;
if (len < sizeof (struct sockaddr_in6) ||
connp->conn_family == AF_INET) {
err = EINVAL;
goto done;
}
requested_port = ntohs(sin6->sin6_port);
/* Set the flowinfo. */
connp->conn_flowinfo =
sin6->sin6_flowinfo & ~IPV6_VERS_AND_FLOW_MASK;
scope_id = sin6->sin6_scope_id;
if (scope_id != 0 && IN6_IS_ADDR_LINKSCOPE(&sin6->sin6_addr)) {
connp->conn_ixa->ixa_flags |= IXAF_SCOPEID_SET;
connp->conn_ixa->ixa_scopeid = scope_id;
connp->conn_incoming_ifindex = scope_id;
} else {
connp->conn_ixa->ixa_flags &= ~IXAF_SCOPEID_SET;
connp->conn_incoming_ifindex = connp->conn_bound_if;
}
break;
default:
err = EAFNOSUPPORT;
goto done;
}
bind_to_req_port_only = requested_port == 0 ? B_FALSE : B_TRUE;
err = sctp_select_port(sctp, &requested_port, &user_specified);
if (err != 0)
goto done;
if ((err = sctp_bind_add(sctp, sa, 1, B_TRUE,
user_specified == 1 ? htons(requested_port) : 0)) != 0) {
goto done;
}
err = sctp_bindi(sctp, requested_port, bind_to_req_port_only,
user_specified, &allocated_port);
if (err != 0) {
sctp_free_saddrs(sctp);
} else {
ASSERT(sctp->sctp_state == SCTPS_BOUND);
}
done:
WAKE_SCTP(sctp);
return (err);
}