diff options
author | Michal Kubecek <mkubecek@suse.cz> | 2020-03-04 17:24:14 +0100 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2020-03-05 21:38:02 -0800 |
commit | 3424170f37e78c9061e033ecebf42292b3939bbd (patch) | |
tree | 35760921d7b04f1f241488bd8fb62f86d685e9be /drivers/net/tun.c | |
parent | 182094348a08e712b41c0dbee92791bfa3b76d53 (diff) | |
download | lwn-3424170f37e78c9061e033ecebf42292b3939bbd.tar.gz lwn-3424170f37e78c9061e033ecebf42292b3939bbd.zip |
tun: replace tun_debug() by netif_info()
The tun driver uses custom macro tun_debug() which is only available if
TUN_DEBUG is set. Replace it by standard netif_ifinfo(). For that purpose,
rename tun_struct::debug to msg_enable and make it u32 and always present.
Finally, make tun_get_msglevel(), tun_set_msglevel() and TUNSETDEBUG ioctl
independent of TUN_DEBUG.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/tun.c')
-rw-r--r-- | drivers/net/tun.c | 60 |
1 files changed, 27 insertions, 33 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 15ae2050ab5b..42110aba0014 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -81,7 +81,7 @@ static void tun_default_link_ksettings(struct net_device *dev, #ifdef TUN_DEBUG #define tun_debug(level, tun, fmt, args...) \ do { \ - if (tun->debug) \ + if (tun->msg_enable) \ netdev_printk(level, tun->dev, fmt, ##args); \ } while (0) #else @@ -213,9 +213,7 @@ struct tun_struct { struct sock_fprog fprog; /* protected by rtnl lock */ bool filter_attached; -#ifdef TUN_DEBUG - int debug; -#endif + u32 msg_enable; spinlock_t lock; struct hlist_head flows[TUN_NUM_FLOW_ENTRIES]; struct timer_list flow_gc_timer; @@ -411,8 +409,9 @@ static struct tun_flow_entry *tun_flow_create(struct tun_struct *tun, struct tun_flow_entry *e = kmalloc(sizeof(*e), GFP_ATOMIC); if (e) { - tun_debug(KERN_INFO, tun, "create flow: hash %u index %u\n", - rxhash, queue_index); + netif_info(tun, tx_queued, tun->dev, + "create flow: hash %u index %u\n", + rxhash, queue_index); e->updated = jiffies; e->rxhash = rxhash; e->rps_rxhash = 0; @@ -426,8 +425,8 @@ static struct tun_flow_entry *tun_flow_create(struct tun_struct *tun, static void tun_flow_delete(struct tun_struct *tun, struct tun_flow_entry *e) { - tun_debug(KERN_INFO, tun, "delete flow: hash %u index %u\n", - e->rxhash, e->queue_index); + netif_info(tun, tx_queued, tun->dev, "delete flow: hash %u index %u\n", + e->rxhash, e->queue_index); hlist_del_rcu(&e->hash_link); kfree_rcu(e, rcu); --tun->flow_count; @@ -1061,7 +1060,7 @@ static netdev_tx_t tun_net_xmit(struct sk_buff *skb, struct net_device *dev) if (!rcu_dereference(tun->steering_prog)) tun_automq_xmit(tun, skb); - tun_debug(KERN_INFO, tun, "tun_net_xmit %d\n", skb->len); + netif_info(tun, tx_queued, tun->dev, "%s %d\n", __func__, skb->len); /* Drop if the filter does not like it. * This is a noop if the filter is disabled. @@ -3085,7 +3084,7 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd, if (!tun) goto unlock; - tun_debug(KERN_INFO, tun, "tun_chr_ioctl cmd %u\n", cmd); + netif_info(tun, drv, tun->dev, "tun_chr_ioctl cmd %u\n", cmd); net = dev_net(tun->dev); ret = 0; @@ -3106,8 +3105,8 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd, /* Disable/Enable checksum */ /* [unimplemented] */ - tun_debug(KERN_INFO, tun, "ignored: set checksum %s\n", - arg ? "disabled" : "enabled"); + netif_info(tun, drv, tun->dev, "ignored: set checksum %s\n", + arg ? "disabled" : "enabled"); break; case TUNSETPERSIST: @@ -3125,8 +3124,8 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd, do_notify = true; } - tun_debug(KERN_INFO, tun, "persist %s\n", - arg ? "enabled" : "disabled"); + netif_info(tun, drv, tun->dev, "persist %s\n", + arg ? "enabled" : "disabled"); break; case TUNSETOWNER: @@ -3138,8 +3137,8 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd, } tun->owner = owner; do_notify = true; - tun_debug(KERN_INFO, tun, "owner set to %u\n", - from_kuid(&init_user_ns, tun->owner)); + netif_info(tun, drv, tun->dev, "owner set to %u\n", + from_kuid(&init_user_ns, tun->owner)); break; case TUNSETGROUP: @@ -3151,29 +3150,28 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd, } tun->group = group; do_notify = true; - tun_debug(KERN_INFO, tun, "group set to %u\n", - from_kgid(&init_user_ns, tun->group)); + netif_info(tun, drv, tun->dev, "group set to %u\n", + from_kgid(&init_user_ns, tun->group)); break; case TUNSETLINK: /* Only allow setting the type when the interface is down */ if (tun->dev->flags & IFF_UP) { - tun_debug(KERN_INFO, tun, - "Linktype set failed because interface is up\n"); + netif_info(tun, drv, tun->dev, + "Linktype set failed because interface is up\n"); ret = -EBUSY; } else { tun->dev->type = (int) arg; - tun_debug(KERN_INFO, tun, "linktype set to %d\n", - tun->dev->type); + netif_info(tun, drv, tun->dev, "linktype set to %d\n", + tun->dev->type); ret = 0; } break; -#ifdef TUN_DEBUG case TUNSETDEBUG: - tun->debug = arg; + tun->msg_enable = (u32)arg; break; -#endif + case TUNSETOFFLOAD: ret = set_offload(tun, arg); break; @@ -3529,20 +3527,16 @@ static void tun_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info static u32 tun_get_msglevel(struct net_device *dev) { -#ifdef TUN_DEBUG struct tun_struct *tun = netdev_priv(dev); - return tun->debug; -#else - return -EOPNOTSUPP; -#endif + + return tun->msg_enable; } static void tun_set_msglevel(struct net_device *dev, u32 value) { -#ifdef TUN_DEBUG struct tun_struct *tun = netdev_priv(dev); - tun->debug = value; -#endif + + tun->msg_enable = value; } static int tun_get_coalesce(struct net_device *dev, |