summaryrefslogtreecommitdiff
path: root/drivers/net/tun.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/tun.c')
-rw-r--r--drivers/net/tun.c85
1 files changed, 52 insertions, 33 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index b100bd50a0d7..f5e9ac00a07b 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -34,6 +34,8 @@
* Modifications for 2.3.99-pre5 kernel.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#define DRV_NAME "tun"
#define DRV_VERSION "1.6"
#define DRV_DESCRIPTION "Universal TUN/TAP device driver"
@@ -76,11 +78,27 @@
#ifdef TUN_DEBUG
static int debug;
-#define DBG if(tun->debug)printk
-#define DBG1 if(debug==2)printk
+#define tun_debug(level, tun, fmt, args...) \
+do { \
+ if (tun->debug) \
+ netdev_printk(level, tun->dev, fmt, ##args); \
+} while (0)
+#define DBG1(level, fmt, args...) \
+do { \
+ if (debug == 2) \
+ printk(level fmt, ##args); \
+} while (0)
#else
-#define DBG( a... )
-#define DBG1( a... )
+#define tun_debug(level, tun, fmt, args...) \
+do { \
+ if (0) \
+ netdev_printk(level, tun->dev, fmt, ##args); \
+} while (0)
+#define DBG1(level, fmt, args...) \
+do { \
+ if (0) \
+ printk(level fmt, ##args); \
+} while (0)
#endif
#define FLT_EXACT_COUNT 8
@@ -205,7 +223,7 @@ static void tun_put(struct tun_struct *tun)
tun_detach(tfile->tun);
}
-/* TAP filterting */
+/* TAP filtering */
static void addr_hash_set(u32 *mask, const u8 *addr)
{
int n = ether_crc(ETH_ALEN, addr) >> 26;
@@ -360,7 +378,7 @@ static netdev_tx_t tun_net_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct tun_struct *tun = netdev_priv(dev);
- DBG(KERN_INFO "%s: tun_net_xmit %d\n", tun->dev->name, skb->len);
+ tun_debug(KERN_INFO, tun, "tun_net_xmit %d\n", skb->len);
/* Drop packet if interface is not attached */
if (!tun->tfile)
@@ -499,7 +517,7 @@ static unsigned int tun_chr_poll(struct file *file, poll_table * wait)
sk = tun->socket.sk;
- DBG(KERN_INFO "%s: tun_chr_poll\n", tun->dev->name);
+ tun_debug(KERN_INFO, tun, "tun_chr_poll\n");
poll_wait(file, &tun->wq.wait, wait);
@@ -690,7 +708,7 @@ static ssize_t tun_chr_aio_write(struct kiocb *iocb, const struct iovec *iv,
if (!tun)
return -EBADFD;
- DBG(KERN_INFO "%s: tun_chr_write %ld\n", tun->dev->name, count);
+ tun_debug(KERN_INFO, tun, "tun_chr_write %ld\n", count);
result = tun_get_user(tun, iv, iov_length(iv, count),
file->f_flags & O_NONBLOCK);
@@ -739,7 +757,7 @@ static __inline__ ssize_t tun_put_user(struct tun_struct *tun,
else if (sinfo->gso_type & SKB_GSO_UDP)
gso.gso_type = VIRTIO_NET_HDR_GSO_UDP;
else {
- printk(KERN_ERR "tun: unexpected GSO type: "
+ pr_err("unexpected GSO type: "
"0x%x, gso_size %d, hdr_len %d\n",
sinfo->gso_type, gso.gso_size,
gso.hdr_len);
@@ -786,7 +804,7 @@ static ssize_t tun_do_read(struct tun_struct *tun,
struct sk_buff *skb;
ssize_t ret = 0;
- DBG(KERN_INFO "%s: tun_chr_read\n", tun->dev->name);
+ tun_debug(KERN_INFO, tun, "tun_chr_read\n");
add_wait_queue(&tun->wq.wait, &wait);
while (len) {
@@ -1083,7 +1101,7 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr)
if (device_create_file(&tun->dev->dev, &dev_attr_tun_flags) ||
device_create_file(&tun->dev->dev, &dev_attr_owner) ||
device_create_file(&tun->dev->dev, &dev_attr_group))
- printk(KERN_ERR "Failed to create tun sysfs files\n");
+ pr_err("Failed to create tun sysfs files\n");
sk->sk_destruct = tun_sock_destruct;
@@ -1092,7 +1110,7 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr)
goto failed;
}
- DBG(KERN_INFO "%s: tun_set_iff\n", tun->dev->name);
+ tun_debug(KERN_INFO, tun, "tun_set_iff\n");
if (ifr->ifr_flags & IFF_NO_PI)
tun->flags |= TUN_NO_PI;
@@ -1129,7 +1147,7 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr)
static int tun_get_iff(struct net *net, struct tun_struct *tun,
struct ifreq *ifr)
{
- DBG(KERN_INFO "%s: tun_get_iff\n", tun->dev->name);
+ tun_debug(KERN_INFO, tun, "tun_get_iff\n");
strcpy(ifr->ifr_name, tun->dev->name);
@@ -1142,7 +1160,7 @@ static int tun_get_iff(struct net *net, struct tun_struct *tun,
* privs required. */
static int set_offload(struct net_device *dev, unsigned long arg)
{
- unsigned int old_features, features;
+ u32 old_features, features;
old_features = dev->features;
/* Unset features, set them as we chew on the arg. */
@@ -1229,7 +1247,7 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd,
if (!tun)
goto unlock;
- DBG(KERN_INFO "%s: tun_chr_ioctl cmd %d\n", tun->dev->name, cmd);
+ tun_debug(KERN_INFO, tun, "tun_chr_ioctl cmd %d\n", cmd);
ret = 0;
switch (cmd) {
@@ -1249,8 +1267,8 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd,
else
tun->flags &= ~TUN_NOCHECKSUM;
- DBG(KERN_INFO "%s: checksum %s\n",
- tun->dev->name, arg ? "disabled" : "enabled");
+ tun_debug(KERN_INFO, tun, "checksum %s\n",
+ arg ? "disabled" : "enabled");
break;
case TUNSETPERSIST:
@@ -1260,33 +1278,34 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd,
else
tun->flags &= ~TUN_PERSIST;
- DBG(KERN_INFO "%s: persist %s\n",
- tun->dev->name, arg ? "enabled" : "disabled");
+ tun_debug(KERN_INFO, tun, "persist %s\n",
+ arg ? "enabled" : "disabled");
break;
case TUNSETOWNER:
/* Set owner of the device */
tun->owner = (uid_t) arg;
- DBG(KERN_INFO "%s: owner set to %d\n", tun->dev->name, tun->owner);
+ tun_debug(KERN_INFO, tun, "owner set to %d\n", tun->owner);
break;
case TUNSETGROUP:
/* Set group of the device */
tun->group= (gid_t) arg;
- DBG(KERN_INFO "%s: group set to %d\n", tun->dev->name, tun->group);
+ tun_debug(KERN_INFO, tun, "group set to %d\n", tun->group);
break;
case TUNSETLINK:
/* Only allow setting the type when the interface is down */
if (tun->dev->flags & IFF_UP) {
- DBG(KERN_INFO "%s: Linktype set failed because interface is up\n",
- tun->dev->name);
+ tun_debug(KERN_INFO, tun,
+ "Linktype set failed because interface is up\n");
ret = -EBUSY;
} else {
tun->dev->type = (int) arg;
- DBG(KERN_INFO "%s: linktype set to %d\n", tun->dev->name, tun->dev->type);
+ tun_debug(KERN_INFO, tun, "linktype set to %d\n",
+ tun->dev->type);
ret = 0;
}
break;
@@ -1318,8 +1337,8 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd,
case SIOCSIFHWADDR:
/* Set hw address */
- DBG(KERN_DEBUG "%s: set hw address: %pM\n",
- tun->dev->name, ifr.ifr_hwaddr.sa_data);
+ tun_debug(KERN_DEBUG, tun, "set hw address: %pM\n",
+ ifr.ifr_hwaddr.sa_data);
ret = dev_set_mac_address(tun->dev, &ifr.ifr_hwaddr);
break;
@@ -1433,7 +1452,7 @@ static int tun_chr_fasync(int fd, struct file *file, int on)
if (!tun)
return -EBADFD;
- DBG(KERN_INFO "%s: tun_chr_fasync %d\n", tun->dev->name, on);
+ tun_debug(KERN_INFO, tun, "tun_chr_fasync %d\n", on);
if ((ret = fasync_helper(fd, file, on, &tun->fasync)) < 0)
goto out;
@@ -1455,7 +1474,7 @@ static int tun_chr_open(struct inode *inode, struct file * file)
{
struct tun_file *tfile;
- DBG1(KERN_INFO "tunX: tun_chr_open\n");
+ DBG1(KERN_INFO, "tunX: tun_chr_open\n");
tfile = kmalloc(sizeof(*tfile), GFP_KERNEL);
if (!tfile)
@@ -1476,7 +1495,7 @@ static int tun_chr_close(struct inode *inode, struct file *file)
if (tun) {
struct net_device *dev = tun->dev;
- DBG(KERN_INFO "%s: tun_chr_close\n", dev->name);
+ tun_debug(KERN_INFO, tun, "tun_chr_close\n");
__tun_detach(tun);
@@ -1607,18 +1626,18 @@ static int __init tun_init(void)
{
int ret = 0;
- printk(KERN_INFO "tun: %s, %s\n", DRV_DESCRIPTION, DRV_VERSION);
- printk(KERN_INFO "tun: %s\n", DRV_COPYRIGHT);
+ pr_info("%s, %s\n", DRV_DESCRIPTION, DRV_VERSION);
+ pr_info("%s\n", DRV_COPYRIGHT);
ret = rtnl_link_register(&tun_link_ops);
if (ret) {
- printk(KERN_ERR "tun: Can't register link_ops\n");
+ pr_err("Can't register link_ops\n");
goto err_linkops;
}
ret = misc_register(&tun_miscdev);
if (ret) {
- printk(KERN_ERR "tun: Can't register misc device %d\n", TUN_MINOR);
+ pr_err("Can't register misc device %d\n", TUN_MINOR);
goto err_misc;
}
return 0;
generated by cgit (git 2.34.1) at 2025-11-04 04:57:44 +0000