diff options
| author | David S. Miller <davem@davemloft.net> | 2008-04-14 02:30:23 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-04-14 02:30:23 -0700 |
| commit | df39e8ba56a788733d369068c7319e04b1da3cd5 (patch) | |
| tree | 1e9be853bdb455e341cdbf957656f342cfa2eb9e /drivers/net/tun.c | |
| parent | f5572855ec492334d8c3ec0e0e86c31865d5cf07 (diff) | |
| parent | 159d83363b629c91d020734207c1bc788b96af5a (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.c | 38 |
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 @@ #include <asm/system.h> #include <asm/uaccess.h> +/* Uncomment to enable debugging */ +/* #define TUN_DEBUG 1 */ + #ifdef TUN_DEBUG static int debug; + +#define DBG if(tun->debug)printk +#define DBG1 if(debug==2)printk +#else +#define DBG( a... ) +#define DBG1( a... ) +#endif + +struct tun_struct { + struct list_head list; + unsigned long flags; + int attached; + uid_t owner; + gid_t group; + + wait_queue_head_t read_wait; + struct sk_buff_head readq; + + struct net_device *dev; + + struct fasync_struct *fasync; + + unsigned long if_flags; + u8 dev_addr[ETH_ALEN]; + u32 chr_filter[2]; + u32 net_filter[2]; + +#ifdef TUN_DEBUG + int debug; #endif +}; /* Network device part of the driver */ @@ -253,8 +286,11 @@ static __inline__ ssize_t tun_get_user(struct tun_struct *tun, struct iovec *iv, return -EFAULT; } - if ((tun->flags & TUN_TYPE_MASK) == TUN_TAP_DEV) + if ((tun->flags & TUN_TYPE_MASK) == TUN_TAP_DEV) { align = NET_IP_ALIGN; + if (unlikely(len < ETH_HLEN)) + return -EINVAL; + } if (!(skb = alloc_skb(len + align, GFP_KERNEL))) { tun->dev->stats.rx_dropped++; |