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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2010-09-15 04:04:31 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-09-15 22:06:05 -0700 |
| commit | 95ae6b228f814fc0528d0506ee9f18ac333d6851 (patch) | |
| tree | d5287f3dee478e1bd5fa79e63192447c5bc91e92 /drivers/net/plip.c | |
| parent | 9e0064a5456fd75fd7c70f6f3692c7f732f91a65 (diff) | |
| download | kernel-common-95ae6b228f814fc0528d0506ee9f18ac333d6851.tar.gz kernel-common-95ae6b228f814fc0528d0506ee9f18ac333d6851.tar.bz2 kernel-common-95ae6b228f814fc0528d0506ee9f18ac333d6851.zip | |
ipv4: ip_ptr cleanups
dev->ip_ptr is protected by rtnl and rcu.
Yet some places dont use appropriate primitives and/or locking rules.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/plip.c')
| -rw-r--r-- | drivers/net/plip.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/net/plip.c b/drivers/net/plip.c index 7e82a82422cf..ca4df7f4cf21 100644 --- a/drivers/net/plip.c +++ b/drivers/net/plip.c @@ -995,8 +995,10 @@ plip_tx_packet(struct sk_buff *skb, struct net_device *dev) static void plip_rewrite_address(const struct net_device *dev, struct ethhdr *eth) { - const struct in_device *in_dev = dev->ip_ptr; + const struct in_device *in_dev; + rcu_read_lock(); + in_dev = __in_dev_get_rcu(dev); if (in_dev) { /* Any address will do - we take the first */ const struct in_ifaddr *ifa = in_dev->ifa_list; @@ -1006,6 +1008,7 @@ plip_rewrite_address(const struct net_device *dev, struct ethhdr *eth) memcpy(eth->h_dest+2, &ifa->ifa_address, 4); } } + rcu_read_unlock(); } static int @@ -1088,7 +1091,8 @@ plip_open(struct net_device *dev) when the device address isn't identical to the address of a received frame, the kernel incorrectly drops it). */ - if ((in_dev=dev->ip_ptr) != NULL) { + in_dev=__in_dev_get_rtnl(dev); + if (in_dev) { /* Any address will do - we take the first. We already have the first two bytes filled with 0xfc, from plip_init_dev(). */ |