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authorEric Dumazet <eric.dumazet@gmail.com>2009-06-17 19:06:12 -0700
committerDavid S. Miller <davem@davemloft.net>2009-06-18 00:29:12 -0700
commit81e2a3d5b75cbf0b42428b9d5a7cc7c85be9e7a7 (patch)
treecac92ad222a84f30e129b569cb489652a0ca44ef
parent31e6d363abcd0d05766c82f1a9c905a4c974a199 (diff)
downloadlinux-2.6.34-ux500-81e2a3d5b75cbf0b42428b9d5a7cc7c85be9e7a7.tar.gz
atm: sk_wmem_alloc initial value is one
commit 2b85a34e911bf483c27cfdd124aeb1605145dc80 (net: No more expensive sock_hold()/sock_put() on each tx) changed initial sk_wmem_alloc value. This broke net/atm since this protocol assumed a null initial value. This patch makes necessary changes. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/atm/common.c12
-rw-r--r--net/atm/ioctl.c3
-rw-r--r--net/atm/proc.c4
-rw-r--r--net/atm/raw.c2
4 files changed, 10 insertions, 11 deletions
diff --git a/net/atm/common.c b/net/atm/common.c
index d34edbe754c..c1c97936192 100644
--- a/net/atm/common.c
+++ b/net/atm/common.c
@@ -62,15 +62,15 @@ static struct sk_buff *alloc_tx(struct atm_vcc *vcc,unsigned int size)
struct sk_buff *skb;
struct sock *sk = sk_atm(vcc);
- if (atomic_read(&sk->sk_wmem_alloc) && !atm_may_send(vcc, size)) {
+ if (sk_wmem_alloc_get(sk) && !atm_may_send(vcc, size)) {
pr_debug("Sorry: wmem_alloc = %d, size = %d, sndbuf = %d\n",
- atomic_read(&sk->sk_wmem_alloc), size,
+ sk_wmem_alloc_get(sk), size,
sk->sk_sndbuf);
return NULL;
}
- while (!(skb = alloc_skb(size,GFP_KERNEL))) schedule();
- pr_debug("AlTx %d += %d\n", atomic_read(&sk->sk_wmem_alloc),
- skb->truesize);
+ while (!(skb = alloc_skb(size, GFP_KERNEL)))
+ schedule();
+ pr_debug("AlTx %d += %d\n", sk_wmem_alloc_get(sk), skb->truesize);
atomic_add(skb->truesize, &sk->sk_wmem_alloc);
return skb;
}
@@ -145,7 +145,7 @@ int vcc_create(struct net *net, struct socket *sock, int protocol, int family)
memset(&vcc->local,0,sizeof(struct sockaddr_atmsvc));
memset(&vcc->remote,0,sizeof(struct sockaddr_atmsvc));
vcc->qos.txtp.max_sdu = 1 << 16; /* for meta VCs */
- atomic_set(&sk->sk_wmem_alloc, 0);
+ atomic_set(&sk->sk_wmem_alloc, 1);
atomic_set(&sk->sk_rmem_alloc, 0);
vcc->push = NULL;
vcc->pop = NULL;
diff --git a/net/atm/ioctl.c b/net/atm/ioctl.c
index 76ed3c8d26e..4da8892ced5 100644
--- a/net/atm/ioctl.c
+++ b/net/atm/ioctl.c
@@ -63,8 +63,7 @@ static int do_vcc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg
error = -EINVAL;
goto done;
}
- error = put_user(sk->sk_sndbuf -
- atomic_read(&sk->sk_wmem_alloc),
+ error = put_user(sk->sk_sndbuf - sk_wmem_alloc_get(sk),
(int __user *) argp) ? -EFAULT : 0;
goto done;
case SIOCINQ:
diff --git a/net/atm/proc.c b/net/atm/proc.c
index e7b3b273907..38de5ff61ec 100644
--- a/net/atm/proc.c
+++ b/net/atm/proc.c
@@ -204,8 +204,8 @@ static void vcc_info(struct seq_file *seq, struct atm_vcc *vcc)
seq_printf(seq, "%3d", sk->sk_family);
}
seq_printf(seq, " %04lx %5d %7d/%7d %7d/%7d [%d]\n", vcc->flags, sk->sk_err,
- atomic_read(&sk->sk_wmem_alloc), sk->sk_sndbuf,
- atomic_read(&sk->sk_rmem_alloc), sk->sk_rcvbuf,
+ sk_wmem_alloc_get(sk), sk->sk_sndbuf,
+ sk_rmem_alloc_get(sk), sk->sk_rcvbuf,
atomic_read(&sk->sk_refcnt));
}
diff --git a/net/atm/raw.c b/net/atm/raw.c
index b0a2d8cb674..cbfcc71a17b 100644
--- a/net/atm/raw.c
+++ b/net/atm/raw.c
@@ -33,7 +33,7 @@ static void atm_pop_raw(struct atm_vcc *vcc,struct sk_buff *skb)
struct sock *sk = sk_atm(vcc);
pr_debug("APopR (%d) %d -= %d\n", vcc->vci,
- atomic_read(&sk->sk_wmem_alloc), skb->truesize);
+ sk_wmem_alloc_get(sk), skb->truesize);
atomic_sub(skb->truesize, &sk->sk_wmem_alloc);
dev_kfree_skb_any(skb);
sk->sk_write_space(sk);