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Phonet: improve GPRS variable names 

Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Rémi Denis-Courmont 2008-12-16 01:18:31 -08:00 committed by David S. Miller
parent 4ee59d54c3
commit 09a2c3c0d3
1 changed files with 84 additions and 82 deletions
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166
net/phonet/pep-gprs.c
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@ -40,7 +40,7 @@ struct gprs_dev {
void (*old_data_ready)(struct sock *, int); void (*old_data_ready)(struct sock *, int);
void (*old_write_space)(struct sock *); void (*old_write_space)(struct sock *);
struct net_device *net; struct net_device *dev;
struct sk_buff_head tx_queue; struct sk_buff_head tx_queue;
struct work_struct tx_work; struct work_struct tx_work;
@ -72,17 +72,19 @@ static __be16 gprs_type_trans(struct sk_buff *skb)
static void gprs_state_change(struct sock *sk) static void gprs_state_change(struct sock *sk)
{ {
struct gprs_dev *dev = sk->sk_user_data; struct gprs_dev *gp = sk->sk_user_data;
if (sk->sk_state == TCP_CLOSE_WAIT) { if (sk->sk_state == TCP_CLOSE_WAIT) {
netif_stop_queue(dev->net); struct net_device *dev = gp->dev;
netif_carrier_off(dev->net);
netif_stop_queue(dev);
netif_carrier_off(dev);
} }
} }
static int gprs_recv(struct gprs_dev *dev, struct sk_buff *skb) static int gprs_recv(struct gprs_dev *gp, struct sk_buff *skb)
{ {
struct net_device *net = dev->net; struct net_device *dev = gp->dev;
int err = 0; int err = 0;
__be16 protocol = gprs_type_trans(skb); __be16 protocol = gprs_type_trans(skb);
@ -99,7 +101,7 @@ static int gprs_recv(struct gprs_dev *dev, struct sk_buff *skb)
* so wrap the IP packet as a single fragment of an head-less * so wrap the IP packet as a single fragment of an head-less
* socket buffer. The network stack will pull what it needs, * socket buffer. The network stack will pull what it needs,
* but at least, the whole IP payload is not memcpy'd. */ * but at least, the whole IP payload is not memcpy'd. */
rskb = netdev_alloc_skb(net, 0); rskb = netdev_alloc_skb(dev, 0);
if (!rskb) { if (!rskb) {
err = -ENOBUFS; err = -ENOBUFS;
goto drop; goto drop;
@ -123,11 +125,11 @@ static int gprs_recv(struct gprs_dev *dev, struct sk_buff *skb)
skb->protocol = protocol; skb->protocol = protocol;
skb_reset_mac_header(skb); skb_reset_mac_header(skb);
skb->dev = net; skb->dev = dev;
if (likely(net->flags & IFF_UP)) { if (likely(dev->flags & IFF_UP)) {
net->stats.rx_packets++; dev->stats.rx_packets++;
net->stats.rx_bytes += skb->len; dev->stats.rx_bytes += skb->len;
netif_rx(skb); netif_rx(skb);
skb = NULL; skb = NULL;
} else } else
@ -136,33 +138,33 @@ static int gprs_recv(struct gprs_dev *dev, struct sk_buff *skb)
drop: drop:
if (skb) { if (skb) {
dev_kfree_skb(skb); dev_kfree_skb(skb);
net->stats.rx_dropped++; dev->stats.rx_dropped++;
} }
return err; return err;
} }
static void gprs_data_ready(struct sock *sk, int len) static void gprs_data_ready(struct sock *sk, int len)
{ {
struct gprs_dev *dev = sk->sk_user_data; struct gprs_dev *gp = sk->sk_user_data;
struct sk_buff *skb; struct sk_buff *skb;
while ((skb = pep_read(sk)) != NULL) { while ((skb = pep_read(sk)) != NULL) {
skb_orphan(skb); skb_orphan(skb);
gprs_recv(dev, skb); gprs_recv(gp, skb);
} }
} }
static void gprs_write_space(struct sock *sk) static void gprs_write_space(struct sock *sk)
{ {
struct gprs_dev *dev = sk->sk_user_data; struct gprs_dev *gp = sk->sk_user_data;
struct net_device *net = dev->net; struct net_device *dev = gp->dev;
unsigned credits = pep_writeable(sk); unsigned credits = pep_writeable(sk);
spin_lock_bh(&dev->tx_lock); spin_lock_bh(&gp->tx_lock);
dev->tx_max = credits; gp->tx_max = credits;
if (credits > skb_queue_len(&dev->tx_queue) && netif_running(net)) if (credits > skb_queue_len(&gp->tx_queue) && netif_running(dev))
netif_wake_queue(net); netif_wake_queue(dev);
spin_unlock_bh(&dev->tx_lock); spin_unlock_bh(&gp->tx_lock);
} }
/* /*
@ -186,9 +188,9 @@ static int gprs_close(struct net_device *dev)
return 0; return 0;
} }
static int gprs_xmit(struct sk_buff *skb, struct net_device *net) static int gprs_xmit(struct sk_buff *skb, struct net_device *dev)
{ {
struct gprs_dev *dev = netdev_priv(net); struct gprs_dev *gp = netdev_priv(dev);
switch (skb->protocol) { switch (skb->protocol) {
case htons(ETH_P_IP): case htons(ETH_P_IP):
@ -199,16 +201,16 @@ static int gprs_xmit(struct sk_buff *skb, struct net_device *net)
return 0; return 0;
} }
spin_lock(&dev->tx_lock); spin_lock(&gp->tx_lock);
if (likely(skb_queue_len(&dev->tx_queue) < dev->tx_max)) { if (likely(skb_queue_len(&gp->tx_queue) < gp->tx_max)) {
skb_queue_tail(&dev->tx_queue, skb); skb_queue_tail(&gp->tx_queue, skb);
skb = NULL; skb = NULL;
} }
if (skb_queue_len(&dev->tx_queue) >= dev->tx_max) if (skb_queue_len(&gp->tx_queue) >= gp->tx_max)
netif_stop_queue(net); netif_stop_queue(dev);
spin_unlock(&dev->tx_lock); spin_unlock(&gp->tx_lock);
schedule_work(&dev->tx_work); schedule_work(&gp->tx_work);
if (unlikely(skb)) if (unlikely(skb))
dev_kfree_skb(skb); dev_kfree_skb(skb);
return 0; return 0;
@ -216,16 +218,16 @@ static int gprs_xmit(struct sk_buff *skb, struct net_device *net)
static void gprs_tx(struct work_struct *work) static void gprs_tx(struct work_struct *work)
{ {
struct gprs_dev *dev = container_of(work, struct gprs_dev, tx_work); struct gprs_dev *gp = container_of(work, struct gprs_dev, tx_work);
struct net_device *net = dev->net; struct net_device *dev = gp->dev;
struct sock *sk = dev->sk; struct sock *sk = gp->sk;
struct sk_buff *skb; struct sk_buff *skb;
while ((skb = skb_dequeue(&dev->tx_queue)) != NULL) { while ((skb = skb_dequeue(&gp->tx_queue)) != NULL) {
int err; int err;
net->stats.tx_bytes += skb->len; dev->stats.tx_bytes += skb->len;
net->stats.tx_packets++; dev->stats.tx_packets++;
skb_orphan(skb); skb_orphan(skb);
skb_set_owner_w(skb, sk); skb_set_owner_w(skb, sk);
@ -234,9 +236,9 @@ static void gprs_tx(struct work_struct *work)
err = pep_write(sk, skb); err = pep_write(sk, skb);
if (err) { if (err) {
LIMIT_NETDEBUG(KERN_WARNING"%s: TX error (%d)\n", LIMIT_NETDEBUG(KERN_WARNING"%s: TX error (%d)\n",
net->name, err); dev->name, err);
net->stats.tx_aborted_errors++; dev->stats.tx_aborted_errors++;
net->stats.tx_errors++; dev->stats.tx_errors++;
} }
release_sock(sk); release_sock(sk);
} }
@ -246,30 +248,30 @@ static void gprs_tx(struct work_struct *work)
release_sock(sk); release_sock(sk);
} }
static int gprs_set_mtu(struct net_device *net, int new_mtu) static int gprs_set_mtu(struct net_device *dev, int new_mtu)
{ {
if ((new_mtu < 576) || (new_mtu > (PHONET_MAX_MTU - 11))) if ((new_mtu < 576) || (new_mtu > (PHONET_MAX_MTU - 11)))
return -EINVAL; return -EINVAL;
net->mtu = new_mtu; dev->mtu = new_mtu;
return 0; return 0;
} }
static void gprs_setup(struct net_device *net) static void gprs_setup(struct net_device *dev)
{ {
net->features = NETIF_F_FRAGLIST; dev->features = NETIF_F_FRAGLIST;
net->type = ARPHRD_NONE; dev->type = ARPHRD_NONE;
net->flags = IFF_POINTOPOINT | IFF_NOARP; dev->flags = IFF_POINTOPOINT | IFF_NOARP;
net->mtu = GPRS_DEFAULT_MTU; dev->mtu = GPRS_DEFAULT_MTU;
net->hard_header_len = 0; dev->hard_header_len = 0;
net->addr_len = 0; dev->addr_len = 0;
net->tx_queue_len = 10; dev->tx_queue_len = 10;
net->destructor = free_netdev; dev->destructor = free_netdev;
net->open = gprs_open; dev->open = gprs_open;
net->stop = gprs_close; dev->stop = gprs_close;
net->hard_start_xmit = gprs_xmit; /* mandatory */ dev->hard_start_xmit = gprs_xmit; /* mandatory */
net->change_mtu = gprs_set_mtu; dev->change_mtu = gprs_set_mtu;
} }
/* /*
@ -283,28 +285,28 @@ static void gprs_setup(struct net_device *net)
int gprs_attach(struct sock *sk) int gprs_attach(struct sock *sk)
{ {
static const char ifname[] = "gprs%d"; static const char ifname[] = "gprs%d";
struct gprs_dev *dev; struct gprs_dev *gp;
struct net_device *net; struct net_device *dev;
int err; int err;
if (unlikely(sk->sk_type == SOCK_STREAM)) if (unlikely(sk->sk_type == SOCK_STREAM))
return -EINVAL; /* need packet boundaries */ return -EINVAL; /* need packet boundaries */
/* Create net device */ /* Create net device */
net = alloc_netdev(sizeof(*dev), ifname, gprs_setup); dev = alloc_netdev(sizeof(*gp), ifname, gprs_setup);
if (!net) if (!dev)
return -ENOMEM; return -ENOMEM;
dev = netdev_priv(net); gp = netdev_priv(dev);
dev->net = net; gp->dev = dev;
dev->tx_max = 0; gp->tx_max = 0;
spin_lock_init(&dev->tx_lock); spin_lock_init(&gp->tx_lock);
skb_queue_head_init(&dev->tx_queue); skb_queue_head_init(&gp->tx_queue);
INIT_WORK(&dev->tx_work, gprs_tx); INIT_WORK(&gp->tx_work, gprs_tx);
netif_stop_queue(net); netif_stop_queue(dev);
err = register_netdev(net); err = register_netdev(dev);
if (err) { if (err) {
free_netdev(net); free_netdev(dev);
return err; return err;
} }
@ -318,40 +320,40 @@ int gprs_attach(struct sock *sk)
err = -EINVAL; err = -EINVAL;
goto out_rel; goto out_rel;
} }
sk->sk_user_data = dev; sk->sk_user_data = gp;
dev->old_state_change = sk->sk_state_change; gp->old_state_change = sk->sk_state_change;
dev->old_data_ready = sk->sk_data_ready; gp->old_data_ready = sk->sk_data_ready;
dev->old_write_space = sk->sk_write_space; gp->old_write_space = sk->sk_write_space;
sk->sk_state_change = gprs_state_change; sk->sk_state_change = gprs_state_change;
sk->sk_data_ready = gprs_data_ready; sk->sk_data_ready = gprs_data_ready;
sk->sk_write_space = gprs_write_space; sk->sk_write_space = gprs_write_space;
release_sock(sk); release_sock(sk);
sock_hold(sk); sock_hold(sk);
dev->sk = sk; gp->sk = sk;
printk(KERN_DEBUG"%s: attached\n", net->name); printk(KERN_DEBUG"%s: attached\n", dev->name);
return net->ifindex; return dev->ifindex;
out_rel: out_rel:
release_sock(sk); release_sock(sk);
unregister_netdev(net); unregister_netdev(dev);
return err; return err;
} }
void gprs_detach(struct sock *sk) void gprs_detach(struct sock *sk)
{ {
struct gprs_dev *dev = sk->sk_user_data; struct gprs_dev *gp = sk->sk_user_data;
struct net_device *net = dev->net; struct net_device *dev = gp->dev;
lock_sock(sk); lock_sock(sk);
sk->sk_user_data = NULL; sk->sk_user_data = NULL;
sk->sk_state_change = dev->old_state_change; sk->sk_state_change = gp->old_state_change;
sk->sk_data_ready = dev->old_data_ready; sk->sk_data_ready = gp->old_data_ready;
sk->sk_write_space = dev->old_write_space; sk->sk_write_space = gp->old_write_space;
release_sock(sk); release_sock(sk);
printk(KERN_DEBUG"%s: detached\n", net->name); printk(KERN_DEBUG"%s: detached\n", dev->name);
unregister_netdev(net); unregister_netdev(dev);
sock_put(sk); sock_put(sk);
} }