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path: root/drivers/net/wan/hdlc_ppp.c
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Diffstat (limited to 'drivers/net/wan/hdlc_ppp.c')
-rw-r--r--drivers/net/wan/hdlc_ppp.c38
1 files changed, 17 insertions, 21 deletions
diff --git a/drivers/net/wan/hdlc_ppp.c b/drivers/net/wan/hdlc_ppp.c
index 261b53fc8e04..834be2ae3e9e 100644
--- a/drivers/net/wan/hdlc_ppp.c
+++ b/drivers/net/wan/hdlc_ppp.c
@@ -41,6 +41,7 @@ static const char *const code_names[CP_CODES] = {
"0", "ConfReq", "ConfAck", "ConfNak", "ConfRej", "TermReq",
"TermAck", "CodeRej", "ProtoRej", "EchoReq", "EchoReply", "Discard"
};
+
static char debug_buffer[64 + 3 * DEBUG_CP];
#endif
@@ -58,7 +59,6 @@ struct cp_header {
__be16 len;
};
-
struct proto {
struct net_device *dev;
struct timer_list timer;
@@ -91,6 +91,7 @@ static const char *const state_names[STATES] = {
"Closed", "Stopped", "Stopping", "ReqSent", "AckRecv", "AckSent",
"Opened"
};
+
static const char *const event_names[EVENTS] = {
"Start", "Stop", "TO+", "TO-", "RCR+", "RCR-", "RCA", "RCN",
"RTR", "RTA", "RUC", "RXJ+", "RXJ-"
@@ -101,12 +102,12 @@ static struct sk_buff_head tx_queue; /* used when holding the spin lock */
static int ppp_ioctl(struct net_device *dev, struct ifreq *ifr);
-static inline struct ppp* get_ppp(struct net_device *dev)
+static inline struct ppp *get_ppp(struct net_device *dev)
{
return (struct ppp *)dev_to_hdlc(dev)->state;
}
-static inline struct proto* get_proto(struct net_device *dev, u16 pid)
+static inline struct proto *get_proto(struct net_device *dev, u16 pid)
{
struct ppp *ppp = get_ppp(dev);
@@ -122,7 +123,7 @@ static inline struct proto* get_proto(struct net_device *dev, u16 pid)
}
}
-static inline const char* proto_name(u16 pid)
+static inline const char *proto_name(u16 pid)
{
switch (pid) {
case PID_LCP:
@@ -138,7 +139,7 @@ static inline const char* proto_name(u16 pid)
static __be16 ppp_type_trans(struct sk_buff *skb, struct net_device *dev)
{
- struct hdlc_header *data = (struct hdlc_header*)skb->data;
+ struct hdlc_header *data = (struct hdlc_header *)skb->data;
if (skb->len < sizeof(struct hdlc_header))
return htons(ETH_P_HDLC);
@@ -160,7 +161,6 @@ static __be16 ppp_type_trans(struct sk_buff *skb, struct net_device *dev)
}
}
-
static int ppp_hard_header(struct sk_buff *skb, struct net_device *dev,
u16 type, const void *daddr, const void *saddr,
unsigned int len)
@@ -171,7 +171,7 @@ static int ppp_hard_header(struct sk_buff *skb, struct net_device *dev,
#endif
skb_push(skb, sizeof(struct hdlc_header));
- data = (struct hdlc_header*)skb->data;
+ data = (struct hdlc_header *)skb->data;
data->address = HDLC_ADDR_ALLSTATIONS;
data->control = HDLC_CTRL_UI;
@@ -193,10 +193,10 @@ static int ppp_hard_header(struct sk_buff *skb, struct net_device *dev,
return sizeof(struct hdlc_header);
}
-
static void ppp_tx_flush(void)
{
struct sk_buff *skb;
+
while ((skb = skb_dequeue(&tx_queue)) != NULL)
dev_queue_xmit(skb);
}
@@ -219,10 +219,9 @@ static void ppp_tx_cp(struct net_device *dev, u16 pid, u8 code,
skb = dev_alloc_skb(sizeof(struct hdlc_header) +
sizeof(struct cp_header) + magic_len + len);
- if (!skb) {
- netdev_warn(dev, "out of memory in ppp_tx_cp()\n");
+ if (!skb)
return;
- }
+
skb_reserve(skb, sizeof(struct hdlc_header));
cp = skb_put(skb, sizeof(struct cp_header));
@@ -256,7 +255,6 @@ static void ppp_tx_cp(struct net_device *dev, u16 pid, u8 code,
skb_queue_tail(&tx_queue, skb);
}
-
/* State transition table (compare STD-51)
Events Actions
TO+ = Timeout with counter > 0 irc = Initialize-Restart-Count
@@ -294,7 +292,6 @@ static int cp_table[EVENTS][STATES] = {
{ 0 , 1 , 1 , 1 , 1 , 1 ,IRC|STR|2}, /* RXJ- */
};
-
/* SCA: RCR+ must supply id, len and data
SCN: RCR- must supply code, id, len and data
STA: RTR must supply id
@@ -369,7 +366,6 @@ static void ppp_cp_event(struct net_device *dev, u16 pid, u16 event, u8 code,
#endif
}
-
static void ppp_cp_parse_cr(struct net_device *dev, u16 pid, u8 id,
unsigned int req_len, const u8 *data)
{
@@ -378,7 +374,8 @@ static void ppp_cp_parse_cr(struct net_device *dev, u16 pid, u8 id,
u8 *out;
unsigned int len = req_len, nak_len = 0, rej_len = 0;
- if (!(out = kmalloc(len, GFP_ATOMIC))) {
+ out = kmalloc(len, GFP_ATOMIC);
+ if (!out) {
dev->stats.rx_dropped++;
return; /* out of memory, ignore CR packet */
}
@@ -435,7 +432,7 @@ err_out:
static int ppp_rx(struct sk_buff *skb)
{
- struct hdlc_header *hdr = (struct hdlc_header*)skb->data;
+ struct hdlc_header *hdr = (struct hdlc_header *)skb->data;
struct net_device *dev = skb->dev;
struct ppp *ppp = get_ppp(dev);
struct proto *proto;
@@ -493,7 +490,7 @@ static int ppp_rx(struct sk_buff *skb)
if (pid == PID_LCP)
switch (cp->code) {
case LCP_PROTO_REJ:
- pid = ntohs(*(__be16*)skb->data);
+ pid = ntohs(*(__be16 *)skb->data);
if (pid == PID_LCP || pid == PID_IPCP ||
pid == PID_IPV6CP)
ppp_cp_event(dev, pid, RXJ_BAD, 0, 0,
@@ -615,7 +612,6 @@ static void ppp_timer(struct timer_list *t)
ppp_tx_flush();
}
-
static void ppp_start(struct net_device *dev)
{
struct ppp *ppp = get_ppp(dev);
@@ -623,6 +619,7 @@ static void ppp_start(struct net_device *dev)
for (i = 0; i < IDX_COUNT; i++) {
struct proto *proto = &ppp->protos[i];
+
proto->dev = dev;
timer_setup(&proto->timer, ppp_timer, 0);
proto->state = CLOSED;
@@ -680,7 +677,8 @@ static int ppp_ioctl(struct net_device *dev, struct ifreq *ifr)
/* no settable parameters */
- result = hdlc->attach(dev, ENCODING_NRZ,PARITY_CRC16_PR1_CCITT);
+ result = hdlc->attach(dev, ENCODING_NRZ,
+ PARITY_CRC16_PR1_CCITT);
if (result)
return result;
@@ -707,7 +705,6 @@ static int ppp_ioctl(struct net_device *dev, struct ifreq *ifr)
return -EINVAL;
}
-
static int __init mod_init(void)
{
skb_queue_head_init(&tx_queue);
@@ -720,7 +717,6 @@ 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 2.39.1) at 2024-12-20 12:26:28 +0100