summaryrefslogtreecommitdiffstats
path: root/net/sctp/socket.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/sctp/socket.c')
-rw-r--r--net/sctp/socket.c79
1 files changed, 51 insertions, 28 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index ca44917872d2..6a691d84aef4 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -57,6 +57,8 @@
* be incorporated into the next SCTP release.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/wait.h>
@@ -2458,9 +2460,8 @@ static int sctp_setsockopt_delayed_ack(struct sock *sk,
if (params.sack_delay == 0 && params.sack_freq == 0)
return 0;
} else if (optlen == sizeof(struct sctp_assoc_value)) {
- printk(KERN_WARNING "SCTP: Use of struct sctp_assoc_value "
- "in delayed_ack socket option deprecated\n");
- printk(KERN_WARNING "SCTP: Use struct sctp_sack_info instead\n");
+ pr_warn("Use of struct sctp_assoc_value in delayed_ack socket option deprecated\n");
+ pr_warn("Use struct sctp_sack_info instead\n");
if (copy_from_user(&params, optval, optlen))
return -EFAULT;
@@ -2868,10 +2869,8 @@ static int sctp_setsockopt_maxseg(struct sock *sk, char __user *optval, unsigned
int val;
if (optlen == sizeof(int)) {
- printk(KERN_WARNING
- "SCTP: Use of int in maxseg socket option deprecated\n");
- printk(KERN_WARNING
- "SCTP: Use struct sctp_assoc_value instead\n");
+ pr_warn("Use of int in maxseg socket option deprecated\n");
+ pr_warn("Use struct sctp_assoc_value instead\n");
if (copy_from_user(&val, optval, optlen))
return -EFAULT;
params.assoc_id = 0;
@@ -3121,10 +3120,8 @@ static int sctp_setsockopt_maxburst(struct sock *sk,
int assoc_id = 0;
if (optlen == sizeof(int)) {
- printk(KERN_WARNING
- "SCTP: Use of int in max_burst socket option deprecated\n");
- printk(KERN_WARNING
- "SCTP: Use struct sctp_assoc_value instead\n");
+ pr_warn("Use of int in max_burst socket option deprecated\n");
+ pr_warn("Use struct sctp_assoc_value instead\n");
if (copy_from_user(&val, optval, optlen))
return -EFAULT;
} else if (optlen == sizeof(struct sctp_assoc_value)) {
@@ -3595,7 +3592,40 @@ out:
/* The SCTP ioctl handler. */
SCTP_STATIC int sctp_ioctl(struct sock *sk, int cmd, unsigned long arg)
{
- return -ENOIOCTLCMD;
+ int rc = -ENOTCONN;
+
+ sctp_lock_sock(sk);
+
+ /*
+ * SEQPACKET-style sockets in LISTENING state are valid, for
+ * SCTP, so only discard TCP-style sockets in LISTENING state.
+ */
+ if (sctp_style(sk, TCP) && sctp_sstate(sk, LISTENING))
+ goto out;
+
+ switch (cmd) {
+ case SIOCINQ: {
+ struct sk_buff *skb;
+ unsigned int amount = 0;
+
+ skb = skb_peek(&sk->sk_receive_queue);
+ if (skb != NULL) {
+ /*
+ * We will only return the amount of this packet since
+ * that is all that will be read.
+ */
+ amount = skb->len;
+ }
+ rc = put_user(amount, (int __user *)arg);
+ }
+ break;
+ default:
+ rc = -ENOIOCTLCMD;
+ break;
+ }
+out:
+ sctp_release_sock(sk);
+ return rc;
}
/* This is the function which gets called during socket creation to
@@ -4281,9 +4311,8 @@ static int sctp_getsockopt_delayed_ack(struct sock *sk, int len,
if (copy_from_user(&params, optval, len))
return -EFAULT;
} else if (len == sizeof(struct sctp_assoc_value)) {
- printk(KERN_WARNING "SCTP: Use of struct sctp_assoc_value "
- "in delayed_ack socket option deprecated\n");
- printk(KERN_WARNING "SCTP: Use struct sctp_sack_info instead\n");
+ pr_warn("Use of struct sctp_assoc_value in delayed_ack socket option deprecated\n");
+ pr_warn("Use struct sctp_sack_info instead\n");
if (copy_from_user(&params, optval, len))
return -EFAULT;
} else
@@ -4929,10 +4958,8 @@ static int sctp_getsockopt_maxseg(struct sock *sk, int len,
struct sctp_association *asoc;
if (len == sizeof(int)) {
- printk(KERN_WARNING
- "SCTP: Use of int in maxseg socket option deprecated\n");
- printk(KERN_WARNING
- "SCTP: Use struct sctp_assoc_value instead\n");
+ pr_warn("Use of int in maxseg socket option deprecated\n");
+ pr_warn("Use struct sctp_assoc_value instead\n");
params.assoc_id = 0;
} else if (len >= sizeof(struct sctp_assoc_value)) {
len = sizeof(struct sctp_assoc_value);
@@ -5023,10 +5050,8 @@ static int sctp_getsockopt_maxburst(struct sock *sk, int len,
struct sctp_association *asoc;
if (len == sizeof(int)) {
- printk(KERN_WARNING
- "SCTP: Use of int in max_burst socket option deprecated\n");
- printk(KERN_WARNING
- "SCTP: Use struct sctp_assoc_value instead\n");
+ pr_warn("Use of int in max_burst socket option deprecated\n");
+ pr_warn("Use struct sctp_assoc_value instead\n");
params.assoc_id = 0;
} else if (len >= sizeof(struct sctp_assoc_value)) {
len = sizeof(struct sctp_assoc_value);
@@ -5586,8 +5611,7 @@ SCTP_STATIC int sctp_listen_start(struct sock *sk, int backlog)
tfm = crypto_alloc_hash(sctp_hmac_alg, 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(tfm)) {
if (net_ratelimit()) {
- printk(KERN_INFO
- "SCTP: failed to load transform for %s: %ld\n",
+ pr_info("failed to load transform for %s: %ld\n",
sctp_hmac_alg, PTR_ERR(tfm));
}
return -ENOSYS;
@@ -5716,13 +5740,12 @@ unsigned int sctp_poll(struct file *file, struct socket *sock, poll_table *wait)
if (sk->sk_err || !skb_queue_empty(&sk->sk_error_queue))
mask |= POLLERR;
if (sk->sk_shutdown & RCV_SHUTDOWN)
- mask |= POLLRDHUP;
+ mask |= POLLRDHUP | POLLIN | POLLRDNORM;
if (sk->sk_shutdown == SHUTDOWN_MASK)
mask |= POLLHUP;
/* Is it readable? Reconsider this code with TCP-style support. */
- if (!skb_queue_empty(&sk->sk_receive_queue) ||
- (sk->sk_shutdown & RCV_SHUTDOWN))
+ if (!skb_queue_empty(&sk->sk_receive_queue))
mask |= POLLIN | POLLRDNORM;
/* The association is either gone or not ready. */
OpenPOWER on IntegriCloud