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authorLinus Torvalds <torvalds@linux-foundation.org>2010-08-04 11:47:58 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-04 11:47:58 -0700
commit6ba74014c1ab0e37af7de6f64b4eccbbae3cb9e7 (patch)
tree8f3892fc44f1e403675a6d7e88fda5c70e56ee4c /net/econet/af_econet.c
parent5abd9ccced7a726c817dd6b5b96bc933859138d1 (diff)
parent3ff1c25927e3af61c6bf0e4ed959504058ae4565 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1443 commits) phy/marvell: add 88ec048 support igb: Program MDICNFG register prior to PHY init e1000e: correct MAC-PHY interconnect register offset for 82579 hso: Add new product ID can: Add driver for esd CAN-USB/2 device l2tp: fix export of header file for userspace can-raw: Fix skb_orphan_try handling Revert "net: remove zap_completion_queue" net: cleanup inclusion phy/marvell: add 88e1121 interface mode support u32: negative offset fix net: Fix a typo from "dev" to "ndev" igb: Use irq_synchronize per vector when using MSI-X ixgbevf: fix null pointer dereference due to filter being set for VLAN 0 e1000e: Fix irq_synchronize in MSI-X case e1000e: register pm_qos request on hardware activation ip_fragment: fix subtracting PPPOE_SES_HLEN from mtu twice net: Add getsockopt support for TCP thin-streams cxgb4: update driver version cxgb4: add new PCI IDs ... Manually fix up conflicts in: - drivers/net/e1000e/netdev.c: due to pm_qos registration infrastructure changes - drivers/net/phy/marvell.c: conflict between adding 88ec048 support and cleaning up the IDs - drivers/net/wireless/ipw2x00/ipw2100.c: trivial ipw2100_pm_qos_req conflict (registration change vs marking it static)
Diffstat (limited to 'net/econet/af_econet.c')
-rw-r--r--net/econet/af_econet.c27
1 files changed, 18 insertions, 9 deletions
diff --git a/net/econet/af_econet.c b/net/econet/af_econet.c
index 2a5a8053e00..dc54bd0d083 100644
--- a/net/econet/af_econet.c
+++ b/net/econet/af_econet.c
@@ -48,7 +48,7 @@
static const struct proto_ops econet_ops;
static struct hlist_head econet_sklist;
-static DEFINE_RWLOCK(econet_lock);
+static DEFINE_SPINLOCK(econet_lock);
static DEFINE_MUTEX(econet_mutex);
/* Since there are only 256 possible network numbers (or fewer, depends
@@ -98,16 +98,16 @@ struct ec_cb
static void econet_remove_socket(struct hlist_head *list, struct sock *sk)
{
- write_lock_bh(&econet_lock);
+ spin_lock_bh(&econet_lock);
sk_del_node_init(sk);
- write_unlock_bh(&econet_lock);
+ spin_unlock_bh(&econet_lock);
}
static void econet_insert_socket(struct hlist_head *list, struct sock *sk)
{
- write_lock_bh(&econet_lock);
+ spin_lock_bh(&econet_lock);
sk_add_node(sk, list);
- write_unlock_bh(&econet_lock);
+ spin_unlock_bh(&econet_lock);
}
/*
@@ -782,15 +782,19 @@ static struct sock *ec_listening_socket(unsigned char port, unsigned char
struct sock *sk;
struct hlist_node *node;
+ spin_lock(&econet_lock);
sk_for_each(sk, node, &econet_sklist) {
struct econet_sock *opt = ec_sk(sk);
if ((opt->port == port || opt->port == 0) &&
(opt->station == station || opt->station == 0) &&
- (opt->net == net || opt->net == 0))
+ (opt->net == net || opt->net == 0)) {
+ sock_hold(sk);
goto found;
+ }
}
sk = NULL;
found:
+ spin_unlock(&econet_lock);
return sk;
}
@@ -852,7 +856,7 @@ static void aun_incoming(struct sk_buff *skb, struct aunhdr *ah, size_t len)
{
struct iphdr *ip = ip_hdr(skb);
unsigned char stn = ntohl(ip->saddr) & 0xff;
- struct sock *sk;
+ struct sock *sk = NULL;
struct sk_buff *newskb;
struct ec_device *edev = skb->dev->ec_ptr;
@@ -882,10 +886,13 @@ static void aun_incoming(struct sk_buff *skb, struct aunhdr *ah, size_t len)
}
aun_send_response(ip->saddr, ah->handle, 3, 0);
+ sock_put(sk);
return;
bad:
aun_send_response(ip->saddr, ah->handle, 4, 0);
+ if (sk)
+ sock_put(sk);
}
/*
@@ -1050,7 +1057,7 @@ release:
static int econet_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, struct net_device *orig_dev)
{
struct ec_framehdr *hdr;
- struct sock *sk;
+ struct sock *sk = NULL;
struct ec_device *edev = dev->ec_ptr;
if (!net_eq(dev_net(dev), &init_net))
@@ -1085,10 +1092,12 @@ static int econet_rcv(struct sk_buff *skb, struct net_device *dev, struct packet
if (ec_queue_packet(sk, skb, edev->net, hdr->src_stn, hdr->cb,
hdr->port))
goto drop;
-
+ sock_put(sk);
return NET_RX_SUCCESS;
drop:
+ if (sk)
+ sock_put(sk);
kfree_skb(skb);
return NET_RX_DROP;
}