EXPORT_SYMBOL_GPL(dccp_hashinfo);
+/* the maximum queue length for tx in packets. 0 is no limit */
+int sysctl_dccp_tx_qlen __read_mostly = 5;
+
void dccp_set_state(struct sock *sk, const int state)
{
const int oldstate = sk->sk_state;
dccp_init_xmit_timers(sk);
icsk->icsk_rto = DCCP_TIMEOUT_INIT;
+ icsk->icsk_syn_retries = sysctl_dccp_request_retries;
sk->sk_state = DCCP_CLOSED;
sk->sk_write_space = dccp_write_space;
icsk->icsk_sync_mss = dccp_sync_mss;
static int do_dccp_setsockopt(struct sock *sk, int level, int optname,
char __user *optval, int optlen)
{
- struct dccp_sock *dp;
- int err;
- int val;
+ struct dccp_sock *dp = dccp_sk(sk);
+ int val, err = 0;
if (optlen < sizeof(int))
return -EINVAL;
return dccp_setsockopt_service(sk, val, optval, optlen);
lock_sock(sk);
- dp = dccp_sk(sk);
- err = 0;
-
switch (optname) {
case DCCP_SOCKOPT_PACKET_SIZE:
- dp->dccps_packet_size = val;
+ DCCP_WARN("sockopt(PACKET_SIZE) is deprecated: fix your app\n");
+ err = 0;
break;
-
case DCCP_SOCKOPT_CHANGE_L:
if (optlen != sizeof(struct dccp_so_feat))
err = -EINVAL;
(struct dccp_so_feat __user *)
optval);
break;
-
case DCCP_SOCKOPT_CHANGE_R:
if (optlen != sizeof(struct dccp_so_feat))
err = -EINVAL;
(struct dccp_so_feat __user *)
optval);
break;
-
+ case DCCP_SOCKOPT_SEND_CSCOV: /* sender side, RFC 4340, sec. 9.2 */
+ if (val < 0 || val > 15)
+ err = -EINVAL;
+ else
+ dp->dccps_pcslen = val;
+ break;
+ case DCCP_SOCKOPT_RECV_CSCOV: /* receiver side, RFC 4340 sec. 9.2.1 */
+ if (val < 0 || val > 15)
+ err = -EINVAL;
+ else {
+ dp->dccps_pcrlen = val;
+ /* FIXME: add feature negotiation,
+ * ChangeL(MinimumChecksumCoverage, val) */
+ }
+ break;
default:
err = -ENOPROTOOPT;
break;
}
-
+
release_sock(sk);
return err;
}
switch (optname) {
case DCCP_SOCKOPT_PACKET_SIZE:
- val = dp->dccps_packet_size;
- len = sizeof(dp->dccps_packet_size);
- break;
+ DCCP_WARN("sockopt(PACKET_SIZE) is deprecated: fix your app\n");
+ return 0;
case DCCP_SOCKOPT_SERVICE:
return dccp_getsockopt_service(sk, len,
(__be32 __user *)optval, optlen);
+ case DCCP_SOCKOPT_SEND_CSCOV:
+ val = dp->dccps_pcslen;
+ break;
+ case DCCP_SOCKOPT_RECV_CSCOV:
+ val = dp->dccps_pcrlen;
+ break;
case 128 ... 191:
return ccid_hc_rx_getsockopt(dp->dccps_hc_rx_ccid, sk, optname,
len, (u32 __user *)optval, optlen);
return -EMSGSIZE;
lock_sock(sk);
+
+ if (sysctl_dccp_tx_qlen &&
+ (sk->sk_write_queue.qlen >= sysctl_dccp_tx_qlen)) {
+ rc = -EAGAIN;
+ goto out_release;
+ }
+
timeo = sock_sndtimeo(sk, noblock);
/*
} while (!dccp_hashinfo.ehash && --ehash_order > 0);
if (!dccp_hashinfo.ehash) {
- printk(KERN_CRIT "Failed to allocate DCCP "
- "established hash table\n");
+ DCCP_CRIT("Failed to allocate DCCP established hash table");
goto out_free_bind_bucket_cachep;
}
} while (!dccp_hashinfo.bhash && --bhash_order >= 0);
if (!dccp_hashinfo.bhash) {
- printk(KERN_CRIT "Failed to allocate DCCP bind hash table\n");
+ DCCP_CRIT("Failed to allocate DCCP bind hash table");
goto out_free_dccp_ehash;
}