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authorDavid S. Miller <davem@davemloft.net>2008-04-14 05:30:23 -0400
committerDavid S. Miller <davem@davemloft.net>2008-04-14 05:30:23 -0400
commitdf39e8ba56a788733d369068c7319e04b1da3cd5 (patch)
tree1e9be853bdb455e341cdbf957656f342cfa2eb9e /drivers/net/tun.c
parentf5572855ec492334d8c3ec0e0e86c31865d5cf07 (diff)
parent159d83363b629c91d020734207c1bc788b96af5a (diff)
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts: drivers/net/ehea/ehea_main.c drivers/net/wireless/iwlwifi/Kconfig drivers/net/wireless/rt2x00/rt61pci.c net/ipv4/inet_timewait_sock.c net/ipv6/raw.c net/mac80211/ieee80211_sta.c
Diffstat (limited to 'drivers/net/tun.c')
-rw-r--r--drivers/net/tun.c38
1 files changed, 37 insertions, 1 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 7b816a032957..5b5d87585d91 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -67,9 +67,42 @@
67#include <asm/system.h> 67#include <asm/system.h>
68#include <asm/uaccess.h> 68#include <asm/uaccess.h>
69 69
70/* Uncomment to enable debugging */
71/* #define TUN_DEBUG 1 */
72
70#ifdef TUN_DEBUG 73#ifdef TUN_DEBUG
71static int debug; 74static int debug;
75
76#define DBG if(tun->debug)printk
77#define DBG1 if(debug==2)printk
78#else
79#define DBG( a... )
80#define DBG1( a... )
81#endif
82
83struct tun_struct {
84 struct list_head list;
85 unsigned long flags;
86 int attached;
87 uid_t owner;
88 gid_t group;
89
90 wait_queue_head_t read_wait;
91 struct sk_buff_head readq;
92
93 struct net_device *dev;
94
95 struct fasync_struct *fasync;
96
97 unsigned long if_flags;
98 u8 dev_addr[ETH_ALEN];
99 u32 chr_filter[2];
100 u32 net_filter[2];
101
102#ifdef TUN_DEBUG
103 int debug;
72#endif 104#endif
105};
73 106
74/* Network device part of the driver */ 107/* Network device part of the driver */
75 108
@@ -253,8 +286,11 @@ static __inline__ ssize_t tun_get_user(struct tun_struct *tun, struct iovec *iv,
253 return -EFAULT; 286 return -EFAULT;
254 } 287 }
255 288
256 if ((tun->flags & TUN_TYPE_MASK) == TUN_TAP_DEV) 289 if ((tun->flags & TUN_TYPE_MASK) == TUN_TAP_DEV) {
257 align = NET_IP_ALIGN; 290 align = NET_IP_ALIGN;
291 if (unlikely(len < ETH_HLEN))
292 return -EINVAL;
293 }
258 294
259 if (!(skb = alloc_skb(len + align, GFP_KERNEL))) { 295 if (!(skb = alloc_skb(len + align, GFP_KERNEL))) {
260 tun->dev->stats.rx_dropped++; 296 tun->dev->stats.rx_dropped++;