}
}
- if (snum && snum < inet_prot_sock(net) &&
+ if (snum && inet_port_requires_bind_service(net, snum) &&
!ns_capable(net->user_ns, CAP_NET_BIND_SERVICE))
return -EACCES;
if (sctp_autobind(sk))
return -EAGAIN;
} else {
- if (ep->base.bind_addr.port < inet_prot_sock(net) &&
+ if (inet_port_requires_bind_service(net, ep->base.bind_addr.port) &&
!ns_capable(net->user_ns, CAP_NET_BIND_SERVICE))
return -EACCES;
}
*/
static int sctp_setsockopt_paddr_thresholds(struct sock *sk,
char __user *optval,
- unsigned int optlen)
+ unsigned int optlen, bool v2)
{
- struct sctp_paddrthlds val;
+ struct sctp_paddrthlds_v2 val;
struct sctp_transport *trans;
struct sctp_association *asoc;
+ int len;
- if (optlen < sizeof(struct sctp_paddrthlds))
+ len = v2 ? sizeof(val) : sizeof(struct sctp_paddrthlds);
+ if (optlen < len)
return -EINVAL;
- if (copy_from_user(&val, (struct sctp_paddrthlds __user *)optval,
- sizeof(struct sctp_paddrthlds)))
+ if (copy_from_user(&val, optval, len))
return -EFAULT;
+ if (v2 && val.spt_pathpfthld > val.spt_pathcpthld)
+ return -EINVAL;
+
if (!sctp_is_any(sk, (const union sctp_addr *)&val.spt_address)) {
trans = sctp_addr_id2transport(sk, &val.spt_address,
val.spt_assoc_id);
if (val.spt_pathmaxrxt)
trans->pathmaxrxt = val.spt_pathmaxrxt;
+ if (v2)
+ trans->ps_retrans = val.spt_pathcpthld;
trans->pf_retrans = val.spt_pathpfthld;
return 0;
transports) {
if (val.spt_pathmaxrxt)
trans->pathmaxrxt = val.spt_pathmaxrxt;
+ if (v2)
+ trans->ps_retrans = val.spt_pathcpthld;
trans->pf_retrans = val.spt_pathpfthld;
}
if (val.spt_pathmaxrxt)
asoc->pathmaxrxt = val.spt_pathmaxrxt;
+ if (v2)
+ asoc->ps_retrans = val.spt_pathcpthld;
asoc->pf_retrans = val.spt_pathpfthld;
} else {
struct sctp_sock *sp = sctp_sk(sk);
if (val.spt_pathmaxrxt)
sp->pathmaxrxt = val.spt_pathmaxrxt;
+ if (v2)
+ sp->ps_retrans = val.spt_pathcpthld;
sp->pf_retrans = val.spt_pathpfthld;
}
return retval;
}
+static int sctp_setsockopt_pf_expose(struct sock *sk,
+ char __user *optval,
+ unsigned int optlen)
+{
+ struct sctp_assoc_value params;
+ struct sctp_association *asoc;
+ int retval = -EINVAL;
+
+ if (optlen != sizeof(params))
+ goto out;
+
+ if (copy_from_user(¶ms, optval, optlen)) {
+ retval = -EFAULT;
+ goto out;
+ }
+
+ if (params.assoc_value > SCTP_PF_EXPOSE_MAX)
+ goto out;
+
+ asoc = sctp_id2assoc(sk, params.assoc_id);
+ if (!asoc && params.assoc_id != SCTP_FUTURE_ASSOC &&
+ sctp_style(sk, UDP))
+ goto out;
+
+ if (asoc)
+ asoc->pf_expose = params.assoc_value;
+ else
+ sctp_sk(sk)->pf_expose = params.assoc_value;
+ retval = 0;
+
+out:
+ return retval;
+}
+
/* API 6.2 setsockopt(), getsockopt()
*
* Applications use setsockopt() and getsockopt() to set or retrieve
retval = sctp_setsockopt_auto_asconf(sk, optval, optlen);
break;
case SCTP_PEER_ADDR_THLDS:
- retval = sctp_setsockopt_paddr_thresholds(sk, optval, optlen);
+ retval = sctp_setsockopt_paddr_thresholds(sk, optval, optlen,
+ false);
+ break;
+ case SCTP_PEER_ADDR_THLDS_V2:
+ retval = sctp_setsockopt_paddr_thresholds(sk, optval, optlen,
+ true);
break;
case SCTP_RECVRCVINFO:
retval = sctp_setsockopt_recvrcvinfo(sk, optval, optlen);
case SCTP_ECN_SUPPORTED:
retval = sctp_setsockopt_ecn_supported(sk, optval, optlen);
break;
+ case SCTP_EXPOSE_POTENTIALLY_FAILED_STATE:
+ retval = sctp_setsockopt_pf_expose(sk, optval, optlen);
+ break;
default:
retval = -ENOPROTOOPT;
break;
sp->hbinterval = net->sctp.hb_interval;
sp->pathmaxrxt = net->sctp.max_retrans_path;
sp->pf_retrans = net->sctp.pf_retrans;
+ sp->ps_retrans = net->sctp.ps_retrans;
+ sp->pf_expose = net->sctp.pf_expose;
sp->pathmtu = 0; /* allow default discovery */
sp->sackdelay = net->sctp.sack_timeout;
sp->sackfreq = 2;
transport = sctp_addr_id2transport(sk, &pinfo.spinfo_address,
pinfo.spinfo_assoc_id);
- if (!transport)
- return -EINVAL;
+ if (!transport) {
+ retval = -EINVAL;
+ goto out;
+ }
+
+ if (transport->state == SCTP_PF &&
+ transport->asoc->pf_expose == SCTP_PF_EXPOSE_DISABLE) {
+ retval = -EACCES;
+ goto out;
+ }
pinfo.spinfo_assoc_id = sctp_assoc2id(transport->asoc);
pinfo.spinfo_state = transport->state;
* http://www.ietf.org/id/draft-nishida-tsvwg-sctp-failover-05.txt
*/
static int sctp_getsockopt_paddr_thresholds(struct sock *sk,
- char __user *optval,
- int len,
- int __user *optlen)
+ char __user *optval, int len,
+ int __user *optlen, bool v2)
{
- struct sctp_paddrthlds val;
+ struct sctp_paddrthlds_v2 val;
struct sctp_transport *trans;
struct sctp_association *asoc;
+ int min;
- if (len < sizeof(struct sctp_paddrthlds))
+ min = v2 ? sizeof(val) : sizeof(struct sctp_paddrthlds);
+ if (len < min)
return -EINVAL;
- len = sizeof(struct sctp_paddrthlds);
- if (copy_from_user(&val, (struct sctp_paddrthlds __user *)optval, len))
+ len = min;
+ if (copy_from_user(&val, optval, len))
return -EFAULT;
if (!sctp_is_any(sk, (const union sctp_addr *)&val.spt_address)) {
val.spt_pathmaxrxt = trans->pathmaxrxt;
val.spt_pathpfthld = trans->pf_retrans;
+ val.spt_pathcpthld = trans->ps_retrans;
goto out;
}
if (asoc) {
val.spt_pathpfthld = asoc->pf_retrans;
val.spt_pathmaxrxt = asoc->pathmaxrxt;
+ val.spt_pathcpthld = asoc->ps_retrans;
} else {
struct sctp_sock *sp = sctp_sk(sk);
val.spt_pathpfthld = sp->pf_retrans;
val.spt_pathmaxrxt = sp->pathmaxrxt;
+ val.spt_pathcpthld = sp->ps_retrans;
}
out:
return retval;
}
+static int sctp_getsockopt_pf_expose(struct sock *sk, int len,
+ char __user *optval,
+ int __user *optlen)
+{
+ struct sctp_assoc_value params;
+ struct sctp_association *asoc;
+ int retval = -EFAULT;
+
+ if (len < sizeof(params)) {
+ retval = -EINVAL;
+ goto out;
+ }
+
+ len = sizeof(params);
+ if (copy_from_user(¶ms, optval, len))
+ goto out;
+
+ asoc = sctp_id2assoc(sk, params.assoc_id);
+ if (!asoc && params.assoc_id != SCTP_FUTURE_ASSOC &&
+ sctp_style(sk, UDP)) {
+ retval = -EINVAL;
+ goto out;
+ }
+
+ params.assoc_value = asoc ? asoc->pf_expose
+ : sctp_sk(sk)->pf_expose;
+
+ if (put_user(len, optlen))
+ goto out;
+
+ if (copy_to_user(optval, ¶ms, len))
+ goto out;
+
+ retval = 0;
+
+out:
+ return retval;
+}
+
static int sctp_getsockopt(struct sock *sk, int level, int optname,
char __user *optval, int __user *optlen)
{
retval = sctp_getsockopt_auto_asconf(sk, len, optval, optlen);
break;
case SCTP_PEER_ADDR_THLDS:
- retval = sctp_getsockopt_paddr_thresholds(sk, optval, len, optlen);
+ retval = sctp_getsockopt_paddr_thresholds(sk, optval, len,
+ optlen, false);
+ break;
+ case SCTP_PEER_ADDR_THLDS_V2:
+ retval = sctp_getsockopt_paddr_thresholds(sk, optval, len,
+ optlen, true);
break;
case SCTP_GET_ASSOC_STATS:
retval = sctp_getsockopt_assoc_stats(sk, len, optval, optlen);
case SCTP_ECN_SUPPORTED:
retval = sctp_getsockopt_ecn_supported(sk, len, optval, optlen);
break;
+ case SCTP_EXPOSE_POTENTIALLY_FAILED_STATE:
+ retval = sctp_getsockopt_pf_expose(sk, len, optval, optlen);
+ break;
default:
retval = -ENOPROTOOPT;
break;
struct sctp_sock *sp = sctp_sk(sk);
bool reuse = (sk->sk_reuse || sp->reuse);
struct sctp_bind_hashbucket *head; /* hash list */
+ struct net *net = sock_net(sk);
kuid_t uid = sock_i_uid(sk);
struct sctp_bind_bucket *pp;
unsigned short snum;
/* Search for an available port. */
int low, high, remaining, index;
unsigned int rover;
- struct net *net = sock_net(sk);
inet_get_local_port_range(net, &low, &high);
remaining = (high - low) + 1;
rover = low;
if (inet_is_local_reserved_port(net, rover))
continue;
- index = sctp_phashfn(sock_net(sk), rover);
+ index = sctp_phashfn(net, rover);
head = &sctp_port_hashtable[index];
spin_lock(&head->lock);
sctp_for_each_hentry(pp, &head->chain)
if ((pp->port == rover) &&
- net_eq(sock_net(sk), pp->net))
+ net_eq(net, pp->net))
goto next;
break;
next:
* to the port number (snum) - we detect that with the
* port iterator, pp being NULL.
*/
- head = &sctp_port_hashtable[sctp_phashfn(sock_net(sk), snum)];
+ head = &sctp_port_hashtable[sctp_phashfn(net, snum)];
spin_lock(&head->lock);
sctp_for_each_hentry(pp, &head->chain) {
- if ((pp->port == snum) && net_eq(pp->net, sock_net(sk)))
+ if ((pp->port == snum) && net_eq(pp->net, net))
goto pp_found;
}
}
pp_not_found:
/* If there was a hash table miss, create a new port. */
ret = 1;
- if (!pp && !(pp = sctp_bucket_create(head, sock_net(sk), snum)))
+ if (!pp && !(pp = sctp_bucket_create(head, net, snum)))
goto fail_unlock;
/* In either case (hit or miss), make sure fastreuse is 1 only
}
}
- sk->sk_max_ack_backlog = backlog;
+ WRITE_ONCE(sk->sk_max_ack_backlog, backlog);
return sctp_hash_endpoint(ep);
}
/* If we are already listening, just update the backlog */
if (sctp_sstate(sk, LISTENING))
- sk->sk_max_ack_backlog = backlog;
+ WRITE_ONCE(sk->sk_max_ack_backlog, backlog);
else {
err = sctp_listen_start(sk, backlog);
if (err)
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