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path: root/drivers/net/wan/hdlc_x25.c
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Diffstat (limited to 'drivers/net/wan/hdlc_x25.c')
-rw-r--r--drivers/net/wan/hdlc_x25.c77
1 files changed, 29 insertions, 48 deletions
diff --git a/drivers/net/wan/hdlc_x25.c b/drivers/net/wan/hdlc_x25.c
index ba8c36c7ea91..d2bf72bf3bd7 100644
--- a/drivers/net/wan/hdlc_x25.c
+++ b/drivers/net/wan/hdlc_x25.c
@@ -56,10 +56,8 @@ static void x25_connect_disconnect(struct net_device *dev, int reason, int code)
unsigned char *ptr;
skb = __dev_alloc_skb(1, GFP_ATOMIC | __GFP_NOMEMALLOC);
- if (!skb) {
- netdev_err(dev, "out of memory\n");
+ if (!skb)
return;
- }
ptr = skb_put(skb, 1);
*ptr = code;
@@ -70,22 +68,16 @@ static void x25_connect_disconnect(struct net_device *dev, int reason, int code)
tasklet_schedule(&x25st->rx_tasklet);
}
-
-
static void x25_connected(struct net_device *dev, int reason)
{
x25_connect_disconnect(dev, reason, X25_IFACE_CONNECT);
}
-
-
static void x25_disconnected(struct net_device *dev, int reason)
{
x25_connect_disconnect(dev, reason, X25_IFACE_DISCONNECT);
}
-
-
static int x25_data_indication(struct net_device *dev, struct sk_buff *skb)
{
struct x25_state *x25st = state(dev_to_hdlc(dev));
@@ -108,8 +100,6 @@ static int x25_data_indication(struct net_device *dev, struct sk_buff *skb)
return NET_RX_SUCCESS;
}
-
-
static void x25_data_transmit(struct net_device *dev, struct sk_buff *skb)
{
hdlc_device *hdlc = dev_to_hdlc(dev);
@@ -123,8 +113,6 @@ static void x25_data_transmit(struct net_device *dev, struct sk_buff *skb)
hdlc->xmit(skb, dev); /* Ignore return value :-( */
}
-
-
static netdev_tx_t x25_xmit(struct sk_buff *skb, struct net_device *dev)
{
hdlc_device *hdlc = dev_to_hdlc(dev);
@@ -149,13 +137,15 @@ static netdev_tx_t x25_xmit(struct sk_buff *skb, struct net_device *dev)
switch (skb->data[0]) {
case X25_IFACE_DATA: /* Data to be transmitted */
skb_pull(skb, 1);
- if ((result = lapb_data_request(dev, skb)) != LAPB_OK)
+ result = lapb_data_request(dev, skb);
+ if (result != LAPB_OK)
dev_kfree_skb(skb);
spin_unlock_bh(&x25st->up_lock);
return NETDEV_TX_OK;
case X25_IFACE_CONNECT:
- if ((result = lapb_connect_request(dev))!= LAPB_OK) {
+ result = lapb_connect_request(dev);
+ if (result != LAPB_OK) {
if (result == LAPB_CONNECTED)
/* Send connect confirm. msg to level 3 */
x25_connected(dev, 0);
@@ -166,7 +156,8 @@ static netdev_tx_t x25_xmit(struct sk_buff *skb, struct net_device *dev)
break;
case X25_IFACE_DISCONNECT:
- if ((result = lapb_disconnect_request(dev)) != LAPB_OK) {
+ result = lapb_disconnect_request(dev);
+ if (result != LAPB_OK) {
if (result == LAPB_NOTCONNECTED)
/* Send disconnect confirm. msg to level 3 */
x25_disconnected(dev, 0);
@@ -185,8 +176,6 @@ static netdev_tx_t x25_xmit(struct sk_buff *skb, struct net_device *dev)
return NETDEV_TX_OK;
}
-
-
static int x25_open(struct net_device *dev)
{
static const struct lapb_register_struct cb = {
@@ -232,8 +221,6 @@ static int x25_open(struct net_device *dev)
return 0;
}
-
-
static void x25_close(struct net_device *dev)
{
hdlc_device *hdlc = dev_to_hdlc(dev);
@@ -247,15 +234,14 @@ static void x25_close(struct net_device *dev)
tasklet_kill(&x25st->rx_tasklet);
}
-
-
static int x25_rx(struct sk_buff *skb)
{
struct net_device *dev = skb->dev;
hdlc_device *hdlc = dev_to_hdlc(dev);
struct x25_state *x25st = state(hdlc);
- if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL) {
+ skb = skb_share_check(skb, GFP_ATOMIC);
+ if (!skb) {
dev->stats.rx_dropped++;
return NET_RX_DROP;
}
@@ -279,7 +265,6 @@ static int x25_rx(struct sk_buff *skb)
return NET_RX_DROP;
}
-
static struct hdlc_proto proto = {
.open = x25_open,
.close = x25_close,
@@ -289,7 +274,6 @@ static struct hdlc_proto proto = {
.module = THIS_MODULE,
};
-
static int x25_ioctl(struct net_device *dev, struct ifreq *ifr)
{
x25_hdlc_proto __user *x25_s = ifr->ifr_settings.ifs_ifsu.x25;
@@ -326,35 +310,36 @@ static int x25_ioctl(struct net_device *dev, struct ifreq *ifr)
new_settings.t1 = 3;
new_settings.t2 = 1;
new_settings.n2 = 10;
- }
- else {
+ } else {
if (copy_from_user(&new_settings, x25_s, size))
return -EFAULT;
if ((new_settings.dce != 0 &&
- new_settings.dce != 1) ||
- (new_settings.modulo != 8 &&
- new_settings.modulo != 128) ||
- new_settings.window < 1 ||
- (new_settings.modulo == 8 &&
- new_settings.window > 7) ||
- (new_settings.modulo == 128 &&
- new_settings.window > 127) ||
- new_settings.t1 < 1 ||
- new_settings.t1 > 255 ||
- new_settings.t2 < 1 ||
- new_settings.t2 > 255 ||
- new_settings.n2 < 1 ||
- new_settings.n2 > 255)
+ new_settings.dce != 1) ||
+ (new_settings.modulo != 8 &&
+ new_settings.modulo != 128) ||
+ new_settings.window < 1 ||
+ (new_settings.modulo == 8 &&
+ new_settings.window > 7) ||
+ (new_settings.modulo == 128 &&
+ new_settings.window > 127) ||
+ new_settings.t1 < 1 ||
+ new_settings.t1 > 255 ||
+ new_settings.t2 < 1 ||
+ new_settings.t2 > 255 ||
+ new_settings.n2 < 1 ||
+ new_settings.n2 > 255)
return -EINVAL;
}
- result=hdlc->attach(dev, ENCODING_NRZ,PARITY_CRC16_PR1_CCITT);
+ result = hdlc->attach(dev, ENCODING_NRZ,
+ PARITY_CRC16_PR1_CCITT);
if (result)
return result;
- if ((result = attach_hdlc_protocol(dev, &proto,
- sizeof(struct x25_state))))
+ result = attach_hdlc_protocol(dev, &proto,
+ sizeof(struct x25_state));
+ if (result)
return result;
memcpy(&state(hdlc)->settings, &new_settings, size);
@@ -380,21 +365,17 @@ static int x25_ioctl(struct net_device *dev, struct ifreq *ifr)
return -EINVAL;
}
-
static int __init mod_init(void)
{
register_hdlc_protocol(&proto);
return 0;
}
-
-
static void __exit mod_exit(void)
{
unregister_hdlc_protocol(&proto);
}
-
module_init(mod_init);
module_exit(mod_exit);
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-10 01:28:26 +0000