tun: drop most type defines

It's just as easy to use IFF_ flags directly,
there's no point in adding our own defines.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index b4e4ca0..36be4fd 100644 (file)
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -109,12 +109,6 @@ do {                                                               \
  * overload it to mean fasync when stored there.
  */
 #define TUN_FASYNC     IFF_ATTACH_QUEUE
-#define TUN_NO_PI      IFF_NO_PI
-/* This flag has no real effect */
-#define TUN_ONE_QUEUE  IFF_ONE_QUEUE
-#define TUN_PERSIST    IFF_PERSIST
-#define TUN_VNET_HDR   IFF_VNET_HDR
-#define TUN_TAP_MQ      IFF_MULTI_QUEUE
 
 #define TUN_FEATURES (IFF_NO_PI | IFF_ONE_QUEUE | IFF_VNET_HDR | \
                      IFF_MULTI_QUEUE)
@@ -487,7 +481,7 @@ static void __tun_detach(struct tun_file *tfile, bool clean)
                if (tun && tun->numqueues == 0 && tun->numdisabled == 0) {
                        netif_carrier_off(tun->dev);
 
-                       if (!(tun->flags & TUN_PERSIST) &&
+                       if (!(tun->flags & IFF_PERSIST) &&
                            tun->dev->reg_state == NETREG_REGISTERED)
                                unregister_netdevice(tun->dev);
                }
@@ -538,7 +532,7 @@ static void tun_detach_all(struct net_device *dev)
        }
        BUG_ON(tun->numdisabled != 0);
 
-       if (tun->flags & TUN_PERSIST)
+       if (tun->flags & IFF_PERSIST)
                module_put(THIS_MODULE);
 }
 
@@ -556,7 +550,7 @@ static int tun_attach(struct tun_struct *tun, struct file *file, bool skip_filte
                goto out;
 
        err = -EBUSY;
-       if (!(tun->flags & TUN_TAP_MQ) && tun->numqueues == 1)
+       if (!(tun->flags & IFF_MULTI_QUEUE) && tun->numqueues == 1)
                goto out;
 
        err = -E2BIG;
@@ -935,7 +929,7 @@ static void tun_net_init(struct net_device *dev)
        struct tun_struct *tun = netdev_priv(dev);
 
        switch (tun->flags & TUN_TYPE_MASK) {
-       case TUN_TUN_DEV:
+       case IFF_TUN:
                dev->netdev_ops = &tun_netdev_ops;
 
                /* Point-to-Point TUN Device */
@@ -949,7 +943,7 @@ static void tun_net_init(struct net_device *dev)
                dev->tx_queue_len = TUN_READQ_SIZE;  /* We prefer our own queue length */
                break;
 
-       case TUN_TAP_DEV:
+       case IFF_TAP:
                dev->netdev_ops = &tap_netdev_ops;
                /* Ethernet TAP Device */
                ether_setup(dev);
@@ -1040,7 +1034,7 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile,
        int err;
        u32 rxhash;
 
-       if (!(tun->flags & TUN_NO_PI)) {
+       if (!(tun->flags & IFF_NO_PI)) {
                if (len < sizeof(pi))
                        return -EINVAL;
                len -= sizeof(pi);
@@ -1050,7 +1044,7 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile,
                offset += sizeof(pi);
        }
 
-       if (tun->flags & TUN_VNET_HDR) {
+       if (tun->flags & IFF_VNET_HDR) {
                if (len < tun->vnet_hdr_sz)
                        return -EINVAL;
                len -= tun->vnet_hdr_sz;
@@ -1067,7 +1061,7 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile,
                offset += tun->vnet_hdr_sz;
        }
 
-       if ((tun->flags & TUN_TYPE_MASK) == TUN_TAP_DEV) {
+       if ((tun->flags & TUN_TYPE_MASK) == IFF_TAP) {
                align += NET_IP_ALIGN;
                if (unlikely(len < ETH_HLEN ||
                             (gso.hdr_len && gso.hdr_len < ETH_HLEN)))
@@ -1130,8 +1124,8 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile,
        }
 
        switch (tun->flags & TUN_TYPE_MASK) {
-       case TUN_TUN_DEV:
-               if (tun->flags & TUN_NO_PI) {
+       case IFF_TUN:
+               if (tun->flags & IFF_NO_PI) {
                        switch (skb->data[0] & 0xf0) {
                        case 0x40:
                                pi.proto = htons(ETH_P_IP);
@@ -1150,7 +1144,7 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile,
                skb->protocol = pi.proto;
                skb->dev = tun->dev;
                break;
-       case TUN_TAP_DEV:
+       case IFF_TAP:
                skb->protocol = eth_type_trans(skb, tun->dev);
                break;
        }
@@ -1256,10 +1250,10 @@ static ssize_t tun_put_user(struct tun_struct *tun,
        if (vlan_tx_tag_present(skb))
                vlan_hlen = VLAN_HLEN;
 
-       if (tun->flags & TUN_VNET_HDR)
+       if (tun->flags & IFF_VNET_HDR)
                vnet_hdr_sz = tun->vnet_hdr_sz;
 
-       if (!(tun->flags & TUN_NO_PI)) {
+       if (!(tun->flags & IFF_NO_PI)) {
                if ((len -= sizeof(pi)) < 0)
                        return -EINVAL;
 
@@ -1592,7 +1586,7 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr)
                        return -EINVAL;
 
                if (!!(ifr->ifr_flags & IFF_MULTI_QUEUE) !=
-                   !!(tun->flags & TUN_TAP_MQ))
+                   !!(tun->flags & IFF_MULTI_QUEUE))
                        return -EINVAL;
 
                if (tun_not_capable(tun))
@@ -1605,7 +1599,7 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr)
                if (err < 0)
                        return err;
 
-               if (tun->flags & TUN_TAP_MQ &&
+               if (tun->flags & IFF_MULTI_QUEUE &&
                    (tun->numqueues + tun->numdisabled > 1)) {
                        /* One or more queue has already been attached, no need
                         * to initialize the device again.
@@ -1628,11 +1622,11 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr)
                /* Set dev type */
                if (ifr->ifr_flags & IFF_TUN) {
                        /* TUN device */
-                       flags |= TUN_TUN_DEV;
+                       flags |= IFF_TUN;
                        name = "tun%d";
                } else if (ifr->ifr_flags & IFF_TAP) {
                        /* TAP device */
-                       flags |= TUN_TAP_DEV;
+                       flags |= IFF_TAP;
                        name = "tap%d";
                } else
                        return -EINVAL;
@@ -1825,7 +1819,7 @@ static int tun_set_queue(struct file *file, struct ifreq *ifr)
                ret = tun_attach(tun, file, false);
        } else if (ifr->ifr_flags & IFF_DETACH_QUEUE) {
                tun = rtnl_dereference(tfile->tun);
-               if (!tun || !(tun->flags & TUN_TAP_MQ) || tfile->detached)
+               if (!tun || !(tun->flags & IFF_MULTI_QUEUE) || tfile->detached)
                        ret = -EINVAL;
                else
                        __tun_detach(tfile, false);
@@ -1929,12 +1923,12 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd,
                /* Disable/Enable persist mode. Keep an extra reference to the
                 * module to prevent the module being unprobed.
                 */
-               if (arg && !(tun->flags & TUN_PERSIST)) {
-                       tun->flags |= TUN_PERSIST;
+               if (arg && !(tun->flags & IFF_PERSIST)) {
+                       tun->flags |= IFF_PERSIST;
                        __module_get(THIS_MODULE);
                }
-               if (!arg && (tun->flags & TUN_PERSIST)) {
-                       tun->flags &= ~TUN_PERSIST;
+               if (!arg && (tun->flags & IFF_PERSIST)) {
+                       tun->flags &= ~IFF_PERSIST;
                        module_put(THIS_MODULE);
                }
 
@@ -1992,7 +1986,7 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd,
        case TUNSETTXFILTER:
                /* Can be set only for TAPs */
                ret = -EINVAL;
-               if ((tun->flags & TUN_TYPE_MASK) != TUN_TAP_DEV)
+               if ((tun->flags & TUN_TYPE_MASK) != IFF_TAP)
                        break;
                ret = update_filter(&tun->txflt, (void __user *)arg);
                break;
@@ -2051,7 +2045,7 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd,
        case TUNATTACHFILTER:
                /* Can be set only for TAPs */
                ret = -EINVAL;
-               if ((tun->flags & TUN_TYPE_MASK) != TUN_TAP_DEV)
+               if ((tun->flags & TUN_TYPE_MASK) != IFF_TAP)
                        break;
                ret = -EFAULT;
                if (copy_from_user(&tun->fprog, argp, sizeof(tun->fprog)))
@@ -2063,7 +2057,7 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd,
        case TUNDETACHFILTER:
                /* Can be set only for TAPs */
                ret = -EINVAL;
-               if ((tun->flags & TUN_TYPE_MASK) != TUN_TAP_DEV)
+               if ((tun->flags & TUN_TYPE_MASK) != IFF_TAP)
                        break;
                ret = 0;
                tun_detach_filter(tun, tun->numqueues);
@@ -2071,7 +2065,7 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd,
 
        case TUNGETFILTER:
                ret = -EINVAL;
-               if ((tun->flags & TUN_TYPE_MASK) != TUN_TAP_DEV)
+               if ((tun->flags & TUN_TYPE_MASK) != IFF_TAP)
                        break;
                ret = -EFAULT;
                if (copy_to_user(argp, &tun->fprog, sizeof(tun->fprog)))
@@ -2264,10 +2258,10 @@ static void tun_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info
        strlcpy(info->version, DRV_VERSION, sizeof(info->version));
 
        switch (tun->flags & TUN_TYPE_MASK) {
-       case TUN_TUN_DEV:
+       case IFF_TUN:
                strlcpy(info->bus_info, "tun", sizeof(info->bus_info));
                break;
-       case TUN_TAP_DEV:
+       case IFF_TAP:
                strlcpy(info->bus_info, "tap", sizeof(info->bus_info));
                break;
        }