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path: root/drivers/net/hamradio/baycom_epp.c
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Diffstat (limited to 'drivers/net/hamradio/baycom_epp.c')
-rw-r--r--drivers/net/hamradio/baycom_epp.c117
1 files changed, 44 insertions, 73 deletions
diff --git a/drivers/net/hamradio/baycom_epp.c b/drivers/net/hamradio/baycom_epp.c
index e4188d082f0..484f77ec2ce 100644
--- a/drivers/net/hamradio/baycom_epp.c
+++ b/drivers/net/hamradio/baycom_epp.c
@@ -44,6 +44,7 @@
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
+#include <linux/sched.h>
#include <linux/string.h>
#include <linux/workqueue.h>
#include <linux/fs.h>
@@ -52,6 +53,7 @@
#include <linux/hdlcdrv.h>
#include <linux/baycom.h>
#include <linux/jiffies.h>
+#include <linux/random.h>
#include <net/ax25.h>
#include <asm/uaccess.h>
@@ -67,7 +69,7 @@ static const char paranoia_str[] = KERN_ERR
static const char bc_drvname[] = "baycom_epp";
static const char bc_drvinfo[] = KERN_INFO "baycom_epp: (C) 1998-2000 Thomas Sailer, HB9JNX/AE4WA\n"
-KERN_INFO "baycom_epp: version 0.7 compiled " __TIME__ " " __DATE__ "\n";
+"baycom_epp: version 0.7\n";
/* --------------------------------------------------------------------- */
@@ -168,8 +170,9 @@ struct baycom_state {
int magic;
struct pardevice *pdev;
+ struct net_device *dev;
unsigned int work_running;
- struct work_struct run_work;
+ struct delayed_work run_work;
unsigned int modem;
unsigned int bitrate;
unsigned char stat;
@@ -201,7 +204,6 @@ struct baycom_state {
unsigned char buf[TXBUFFER_SIZE];
} hdlctx;
- struct net_device_stats stats;
unsigned int ptt_keyed;
struct sk_buff *skb; /* next transmit packet */
@@ -318,13 +320,7 @@ static int eppconfig(struct baycom_state *bc)
sprintf(portarg, "%ld", bc->pdev->port->base);
printk(KERN_DEBUG "%s: %s -s -p %s -m %s\n", bc_drvname, eppconfig_path, portarg, modearg);
- return call_usermodehelper(eppconfig_path, argv, envp, 1);
-}
-
-/* ---------------------------------------------------------------------- */
-
-static void epp_interrupt(int irq, void *dev_id, struct pt_regs *regs)
-{
+ return call_usermodehelper(eppconfig_path, argv, envp, UMH_WAIT_PROC);
}
/* ---------------------------------------------------------------------- */
@@ -427,17 +423,7 @@ static void encode_hdlc(struct baycom_state *bc)
bc->hdlctx.bufptr = bc->hdlctx.buf;
bc->hdlctx.bufcnt = wp - bc->hdlctx.buf;
dev_kfree_skb(skb);
- bc->stats.tx_packets++;
-}
-
-/* ---------------------------------------------------------------------- */
-
-static unsigned short random_seed;
-
-static inline unsigned short random_num(void)
-{
- random_seed = 28629 * random_seed + 157;
- return random_seed;
+ bc->dev->stats.tx_packets++;
}
/* ---------------------------------------------------------------------- */
@@ -463,7 +449,7 @@ static int transmit(struct baycom_state *bc, int cnt, unsigned char stat)
if ((--bc->hdlctx.slotcnt) > 0)
return 0;
bc->hdlctx.slotcnt = bc->ch_params.slottime;
- if ((random_num() % 256) > bc->ch_params.ppersist)
+ if ((prandom_u32() % 256) > bc->ch_params.ppersist)
return 0;
}
}
@@ -561,7 +547,7 @@ static void do_rxpacket(struct net_device *dev)
pktlen = bc->hdlcrx.bufcnt-2+1; /* KISS kludge */
if (!(skb = dev_alloc_skb(pktlen))) {
printk("%s: memory squeeze, dropping packet\n", dev->name);
- bc->stats.rx_dropped++;
+ dev->stats.rx_dropped++;
return;
}
cp = skb_put(skb, pktlen);
@@ -569,8 +555,7 @@ static void do_rxpacket(struct net_device *dev)
memcpy(cp, bc->hdlcrx.buf, pktlen - 1);
skb->protocol = ax25_type_trans(skb, dev);
netif_rx(skb);
- dev->last_rx = jiffies;
- bc->stats.rx_packets++;
+ dev->stats.rx_packets++;
}
static int receive(struct net_device *dev, int cnt)
@@ -611,16 +596,16 @@ static int receive(struct net_device *dev, int cnt)
if (!(notbitstream & (0x1fc << j)))
state = 0;
- /* not flag received */
- else if (!(bitstream & (0x1fe << j)) != (0x0fc << j)) {
+ /* flag received */
+ else if ((bitstream & (0x1fe << j)) == (0x0fc << j)) {
if (state)
do_rxpacket(dev);
bc->hdlcrx.bufcnt = 0;
bc->hdlcrx.bufptr = bc->hdlcrx.buf;
state = 1;
numbits = 7-j;
- }
}
+ }
/* stuffed bit */
else if (unlikely((bitstream & (0x1f8 << j)) == (0xf8 << j))) {
@@ -659,16 +644,18 @@ static int receive(struct net_device *dev, int cnt)
#define GETTICK(x)
#endif /* __i386__ */
-static void epp_bh(struct net_device *dev)
+static void epp_bh(struct work_struct *work)
{
+ struct net_device *dev;
struct baycom_state *bc;
struct parport *pp;
unsigned char stat;
unsigned char tmp[2];
unsigned int time1 = 0, time2 = 0, time3 = 0;
int cnt, cnt2;
-
- bc = netdev_priv(dev);
+
+ bc = container_of(work, struct baycom_state, run_work.work);
+ dev = bc->dev;
if (!bc->work_running)
return;
baycom_int_freq(bc);
@@ -788,18 +775,18 @@ static int baycom_send_packet(struct sk_buff *skb, struct net_device *dev)
if (skb->data[0] != 0) {
do_kiss_params(bc, skb->data, skb->len);
dev_kfree_skb(skb);
- return 0;
+ return NETDEV_TX_OK;
}
if (bc->skb)
- return -1;
+ return NETDEV_TX_LOCKED;
/* strip KISS byte */
if (skb->len >= HDLCDRV_MAXFLEN+1 || skb->len < 3) {
dev_kfree_skb(skb);
- return 0;
+ return NETDEV_TX_OK;
}
netif_stop_queue(dev);
bc->skb = skb;
- return 0;
+ return NETDEV_TX_OK;
}
/* --------------------------------------------------------------------- */
@@ -815,19 +802,6 @@ static int baycom_set_mac_address(struct net_device *dev, void *addr)
/* --------------------------------------------------------------------- */
-static struct net_device_stats *baycom_get_stats(struct net_device *dev)
-{
- struct baycom_state *bc = netdev_priv(dev);
-
- /*
- * Get the current statistics. This may be called with the
- * card open or closed.
- */
- return &bc->stats;
-}
-
-/* --------------------------------------------------------------------- */
-
static void epp_wakeup(void *handle)
{
struct net_device *dev = (struct net_device *)handle;
@@ -877,7 +851,7 @@ static int epp_open(struct net_device *dev)
}
memset(&bc->modem, 0, sizeof(bc->modem));
bc->pdev = parport_register_device(pp, dev->name, NULL, epp_wakeup,
- epp_interrupt, PARPORT_DEV_EXCL, dev);
+ NULL, PARPORT_DEV_EXCL, dev);
parport_put_port(pp);
if (!bc->pdev) {
printk(KERN_ERR "%s: cannot register parport at 0x%lx\n", bc_drvname, pp->base);
@@ -889,7 +863,7 @@ static int epp_open(struct net_device *dev)
return -EBUSY;
}
dev->irq = /*pp->irq*/ 0;
- INIT_WORK(&bc->run_work, (void *)(void *)epp_bh, dev);
+ INIT_DELAYED_WORK(&bc->run_work, epp_bh);
bc->work_running = 1;
bc->modem = EPP_CONVENTIONAL;
if (eppconfig(bc))
@@ -905,7 +879,7 @@ static int epp_open(struct net_device *dev)
/* autoprobe baud rate */
tstart = jiffies;
i = 0;
- while ((signed)(jiffies-tstart-HZ/3) < 0) {
+ while (time_before(jiffies, tstart + HZ/3)) {
if (pp->ops->epp_read_addr(pp, &stat, 1, 0) != 1)
goto epptimeout;
if ((stat & (EPP_NRAEF|EPP_NRHF)) == EPP_NRHF) {
@@ -971,7 +945,7 @@ static int epp_close(struct net_device *dev)
unsigned char tmp[1];
bc->work_running = 0;
- flush_scheduled_work();
+ cancel_delayed_work_sync(&bc->run_work);
bc->stat = EPP_DCDBIT;
tmp[0] = 0;
pp->ops->epp_write_addr(pp, tmp, 1, 0);
@@ -1078,10 +1052,10 @@ static int baycom_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
hi.data.cs.ptt = !!(bc->stat & EPP_PTTBIT);
hi.data.cs.dcd = !(bc->stat & EPP_DCDBIT);
hi.data.cs.ptt_keyed = bc->ptt_keyed;
- hi.data.cs.tx_packets = bc->stats.tx_packets;
- hi.data.cs.tx_errors = bc->stats.tx_errors;
- hi.data.cs.rx_packets = bc->stats.rx_packets;
- hi.data.cs.rx_errors = bc->stats.rx_errors;
+ hi.data.cs.tx_packets = dev->stats.tx_packets;
+ hi.data.cs.tx_errors = dev->stats.tx_errors;
+ hi.data.cs.rx_packets = dev->stats.rx_packets;
+ hi.data.cs.rx_errors = dev->stats.rx_errors;
break;
case HDLCDRVCTL_OLDGETSTAT:
@@ -1129,6 +1103,14 @@ static int baycom_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
/* --------------------------------------------------------------------- */
+static const struct net_device_ops baycom_netdev_ops = {
+ .ndo_open = epp_open,
+ .ndo_stop = epp_close,
+ .ndo_do_ioctl = baycom_ioctl,
+ .ndo_start_xmit = baycom_send_packet,
+ .ndo_set_mac_address = baycom_set_mac_address,
+};
+
/*
* Check for a network adaptor of this type, and return '0' if one exists.
* If dev->base_addr == 0, probe all likely locations.
@@ -1138,12 +1120,6 @@ static int baycom_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
*/
static void baycom_probe(struct net_device *dev)
{
- static char ax25_bcast[AX25_ADDR_LEN] = {
- 'Q' << 1, 'S' << 1, 'T' << 1, ' ' << 1, ' ' << 1, ' ' << 1, '0' << 1
- };
- static char ax25_nocall[AX25_ADDR_LEN] = {
- 'L' << 1, 'I' << 1, 'N' << 1, 'U' << 1, 'X' << 1, ' ' << 1, '1' << 1
- };
const struct hdlcdrv_channel_params dflt_ch_params = {
20, 2, 10, 40, 0
};
@@ -1162,25 +1138,19 @@ static void baycom_probe(struct net_device *dev)
/*
* initialize the device struct
*/
- dev->open = epp_open;
- dev->stop = epp_close;
- dev->do_ioctl = baycom_ioctl;
- dev->hard_start_xmit = baycom_send_packet;
- dev->get_stats = baycom_get_stats;
/* Fill in the fields of the device structure */
bc->skb = NULL;
- dev->hard_header = ax25_hard_header;
- dev->rebuild_header = ax25_rebuild_header;
- dev->set_mac_address = baycom_set_mac_address;
+ dev->netdev_ops = &baycom_netdev_ops;
+ dev->header_ops = &ax25_header_ops;
dev->type = ARPHRD_AX25; /* AF_AX25 device */
dev->hard_header_len = AX25_MAX_HEADER_LEN + AX25_BPQ_HEADER_LEN;
dev->mtu = AX25_DEF_PACLEN; /* eth_mtu is the default */
dev->addr_len = AX25_ADDR_LEN; /* sizeof an ax.25 address */
- memcpy(dev->broadcast, ax25_bcast, AX25_ADDR_LEN);
- memcpy(dev->dev_addr, ax25_nocall, AX25_ADDR_LEN);
+ memcpy(dev->broadcast, &ax25_bcast, AX25_ADDR_LEN);
+ memcpy(dev->dev_addr, &null_ax25_address, AX25_ADDR_LEN);
dev->tx_queue_len = 16;
/* New style flags */
@@ -1192,7 +1162,7 @@ static void baycom_probe(struct net_device *dev)
/*
* command line settable parameters
*/
-static const char *mode[NR_PORTS] = { "", };
+static char *mode[NR_PORTS] = { "", };
static int iobase[NR_PORTS] = { 0x378, };
module_param_array(mode, charp, NULL, 0);
@@ -1213,6 +1183,7 @@ static void __init baycom_epp_dev_setup(struct net_device *dev)
/*
* initialize part of the baycom_state struct
*/
+ bc->dev = dev;
bc->magic = BAYCOM_MAGIC;
bc->cfg.fclk = 19666600;
bc->cfg.bps = 9600;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 17:53:33 +0000