Commit 9b67e26f authored by Ursula Braun's avatar Ursula Braun Committed by David S. Miller
Browse files

net/smc: handle ioctls SIOCINQ, SIOCOUTQ, and SIOCOUTQNSD



SIOCINQ returns the amount of unread data in the RMB.
SIOCOUTQ returns the amount of unsent or unacked sent data in the send
buffer.
SIOCOUTQNSD returns the amount of data prepared for sending, but
not yet sent.

Signed-off-by: default avatarUrsula Braun <ubraun@linux.ibm.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ed75986f
......@@ -29,6 +29,7 @@
#include <net/sock.h>
#include <net/tcp.h>
#include <net/smc.h>
#include <asm/ioctls.h>
#include "smc.h"
#include "smc_clc.h"
......@@ -1389,12 +1390,38 @@ static int smc_ioctl(struct socket *sock, unsigned int cmd,
unsigned long arg)
{
struct smc_sock *smc;
int answ;
smc = smc_sk(sock->sk);
if (smc->use_fallback)
if (smc->use_fallback) {
if (!smc->clcsock)
return -EBADF;
return smc->clcsock->ops->ioctl(smc->clcsock, cmd, arg);
else
return sock_no_ioctl(sock, cmd, arg);
}
switch (cmd) {
case SIOCINQ: /* same as FIONREAD */
if (smc->sk.sk_state == SMC_LISTEN)
return -EINVAL;
answ = atomic_read(&smc->conn.bytes_to_rcv);
break;
case SIOCOUTQ:
/* output queue size (not send + not acked) */
if (smc->sk.sk_state == SMC_LISTEN)
return -EINVAL;
answ = smc->conn.sndbuf_size -
atomic_read(&smc->conn.sndbuf_space);
break;
case SIOCOUTQNSD:
/* output queue size (not send only) */
if (smc->sk.sk_state == SMC_LISTEN)
return -EINVAL;
answ = smc_tx_prepared_sends(&smc->conn);
break;
default:
return -ENOIOCTLCMD;
}
return put_user(answ, (int __user *)arg);
}
static ssize_t smc_sendpage(struct socket *sock, struct page *page,
......
Supports Markdown
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment