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path: root/drivers/net/wan/sdla_ppp.c
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Diffstat (limited to 'drivers/net/wan/sdla_ppp.c')
-rw-r--r--drivers/net/wan/sdla_ppp.c85
1 files changed, 44 insertions, 41 deletions
diff --git a/drivers/net/wan/sdla_ppp.c b/drivers/net/wan/sdla_ppp.c
index f3dcc129b..40134ff72 100644
--- a/drivers/net/wan/sdla_ppp.c
+++ b/drivers/net/wan/sdla_ppp.c
@@ -142,9 +142,8 @@
#define NUM_AUTH_REQ_WITHOUT_REPLY 10
#define END_OFFSET 0x1F0
-#if LINUX_VERSION_CODE < 0x020125
-#define test_and_set_bit set_bit
-#endif
+
+#define TX_TIMEOUT (5*HZ)
/******Data Structures*****************************************************/
@@ -213,6 +212,7 @@ static int wpp_exec (struct sdla *card, void *u_cmd, void *u_data);
static int if_init(struct net_device *dev);
static int if_open(struct net_device *dev);
static int if_close(struct net_device *dev);
+static void if_tx_timeout (struct net_device *dev);
static int if_header(struct sk_buff *skb, struct net_device *dev, unsigned short type,
void *daddr, void *saddr, unsigned len);
static int if_rebuild_hdr(struct sk_buff *skb);
@@ -585,7 +585,8 @@ static int if_init(struct net_device *dev)
dev->rebuild_header = &if_rebuild_hdr;
dev->hard_start_xmit = &if_send;
dev->get_stats = &if_stats;
-
+ dev->tx_timeout = &if_tx_timeout;
+ dev->watchdog_timeo = TX_TIMEOUT;
/* Initialize media-specific parameters */
dev->type = ARPHRD_PPP; /* ARP h/w type */
@@ -632,7 +633,7 @@ static int if_open(struct net_device *dev)
struct timeval tv;
int err = 0;
- if (dev->start)
+ if (netif_running(dev))
return -EBUSY; /* only one open is allowed */
if (test_and_set_bit(0, (void*)&card->wandev.critical))
@@ -714,13 +715,10 @@ static int if_open(struct net_device *dev)
return err;
}
-
wanpipe_set_state(card, WAN_CONNECTING);
wanpipe_open(card);
dev->mtu = min(dev->mtu, card->wandev.mtu);
- dev->interrupt = 0;
- dev->tbusy = 0;
- dev->start = 1;
+ netif_start_queue(dev);
do_gettimeofday( &tv );
ppp_priv_area->router_start_time = tv.tv_sec;
card->wandev.critical = 0;
@@ -741,7 +739,7 @@ static int if_close(struct net_device *dev)
if (test_and_set_bit(0, (void*)&card->wandev.critical))
return -EAGAIN;
- dev->start = 0;
+ netif_stop_queue(dev);
wanpipe_close(card);
wanpipe_set_state(card, WAN_DISCONNECTED);
ppp_set_intr_mode(card, 0);
@@ -795,6 +793,35 @@ static int if_rebuild_hdr (struct sk_buff *skb)
return 1;
}
+
+/*============================================================================
+ * Handle transmit timeout from netif watchdog
+ */
+static void if_tx_timeout (struct net_device *dev)
+{
+ ppp_private_area_t *ppp_priv_area = dev->priv;
+ sdla_t *card = ppp_priv_area->card;
+
+
+ /* If our device stays busy for at least 5 seconds then we will
+ * kick start the device by making dev->tbusy = 0. We expect
+ * that our device never stays busy more than 5 seconds. So this
+ * is only used as a last resort.
+ */
+
+ ++ppp_priv_area->if_send_stat.if_send_tbusy;
+ ++card->wandev.stats.collisions;
+
+ printk (KERN_INFO "%s: Transmit times out\n", card->devname);
+
+ ++ppp_priv_area->if_send_stat.if_send_tbusy_timeout;
+ ++card->wandev.stats.collisions;
+
+ /* unbusy the card (because only one interface per card) */
+ netif_start_queue(dev);
+}
+
+
/*============================================================================
* Send a packet on a network interface.
* o set tbusy flag (marks start of the transmission) to block a timer-based
@@ -835,34 +862,11 @@ static int if_send (struct sk_buff *skb, struct net_device *dev)
++ppp_priv_area->if_send_stat.if_send_skb_null;
- mark_bh(NET_BH);
+ netif_wake_queue(dev);
return 0;
}
- if (dev->tbusy) {
-
- /* If our device stays busy for at least 5 seconds then we will
- * kick start the device by making dev->tbusy = 0. We expect
- * that our device never stays busy more than 5 seconds. So this
- * is only used as a last resort.
- */
-
- ++ppp_priv_area->if_send_stat.if_send_tbusy;
- ++card->wandev.stats.collisions;
-
- if ((jiffies - ppp_priv_area->tick_counter) < (5*HZ)) {
- return 1;
- }
-
- printk (KERN_INFO "%s: Transmit times out\n",card->devname);
-
- ++ppp_priv_area->if_send_stat.if_send_tbusy_timeout;
- ++card->wandev.stats.collisions;
-
- /* unbusy the card (because only one interface per card)*/
- dev->tbusy = 0;
- }
sendpacket = skb->data;
udp_type = udp_pkt_type( skb, card );
@@ -930,7 +934,7 @@ static int if_send (struct sk_buff *skb, struct net_device *dev)
if (ppp_send(card, skb->data, skb->len, skb->protocol)) {
retry = 1;
- dev->tbusy = 1;
+ netif_stop_queue(dev);
++ppp_priv_area->if_send_stat.if_send_adptr_bfrs_full;
++ppp_priv_area->if_send_stat.if_send_tx_int_enabled;
ppp_priv_area->tick_counter = jiffies;
@@ -1530,7 +1534,7 @@ STATIC void wpp_isr(sdla_t *card)
case PPP_INTR_TXRDY: /* transmit interrupt 0x02 (bit 1)*/
++card->statistics.isr_tx;
flags->imask &= ~PPP_INTR_TXRDY;
- dev->tbusy = 0;
+ netif_wake_queue (dev);
card->buff_int_mode_unbusy = 1;
break;
@@ -1564,9 +1568,8 @@ STATIC void wpp_isr(sdla_t *card)
flags->iflag = 0;
card->wandev.critical = 0;
- if(card->buff_int_mode_unbusy) {
- mark_bh(NET_BH);
- }
+ if(card->buff_int_mode_unbusy)
+ netif_wake_queue(dev);
}
/*============================================================================
@@ -1603,7 +1606,7 @@ static void rx_intr(sdla_t *card)
}
- if (dev && dev->start) {
+ if (dev && netif_running(dev)) {
len = rxbuf->length;
ppp_priv_area = dev->priv;
@@ -2006,7 +2009,7 @@ static void poll_disconnected(sdla_t *card)
{
struct net_device *dev = card->wandev.dev;
- if (dev && dev->start &&
+ if (dev && netif_running(dev) &&
((jiffies - card->state_tick) > HOLD_DOWN_TIME)) {
wanpipe_set_state(card, WAN_CONNECTING);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 08:49:18 +0000