diff options
Diffstat (limited to 'drivers/net/arcnet')
| -rw-r--r-- | drivers/net/arcnet/arcdevice.h | 4 | ||||
| -rw-r--r-- | drivers/net/arcnet/arcnet.c | 74 |
2 files changed, 68 insertions, 10 deletions
diff --git a/drivers/net/arcnet/arcdevice.h b/drivers/net/arcnet/arcdevice.h index 20bfb9ba83ea..cbb4f8566bbe 100644 --- a/drivers/net/arcnet/arcdevice.h +++ b/drivers/net/arcnet/arcdevice.h @@ -269,6 +269,10 @@ struct arcnet_local { struct timer_list timer; + struct net_device *dev; + int reply_status; + struct tasklet_struct reply_tasklet; + /* * Buffer management: an ARCnet card has 4 x 512-byte buffers, each of * which can be used for either sending or receiving. The new dynamic diff --git a/drivers/net/arcnet/arcnet.c b/drivers/net/arcnet/arcnet.c index 62ee439d5882..d87f4da29f11 100644 --- a/drivers/net/arcnet/arcnet.c +++ b/drivers/net/arcnet/arcnet.c @@ -51,6 +51,7 @@ #include <net/arp.h> #include <linux/init.h> #include <linux/jiffies.h> +#include <linux/errqueue.h> #include <linux/leds.h> @@ -391,6 +392,52 @@ static void arcnet_timer(unsigned long data) } } +static void arcnet_reply_tasklet(unsigned long data) +{ + struct arcnet_local *lp = (struct arcnet_local *)data; + + struct sk_buff *ackskb, *skb; + struct sock_exterr_skb *serr; + struct sock *sk; + int ret; + + local_irq_disable(); + skb = lp->outgoing.skb; + if (!skb || !skb->sk) { + local_irq_enable(); + return; + } + + sock_hold(skb->sk); + sk = skb->sk; + ackskb = skb_clone_sk(skb); + sock_put(skb->sk); + + if (!ackskb) { + local_irq_enable(); + return; + } + + serr = SKB_EXT_ERR(ackskb); + memset(serr, 0, sizeof(*serr)); + serr->ee.ee_errno = ENOMSG; + serr->ee.ee_origin = SO_EE_ORIGIN_TXSTATUS; + serr->ee.ee_data = skb_shinfo(skb)->tskey; + serr->ee.ee_info = lp->reply_status; + + /* finally erasing outgoing skb */ + dev_kfree_skb(lp->outgoing.skb); + lp->outgoing.skb = NULL; + + ackskb->dev = lp->dev; + + ret = sock_queue_err_skb(sk, ackskb); + if (ret) + kfree_skb(ackskb); + + local_irq_enable(); +}; + struct net_device *alloc_arcdev(const char *name) { struct net_device *dev; @@ -401,6 +448,7 @@ struct net_device *alloc_arcdev(const char *name) if (dev) { struct arcnet_local *lp = netdev_priv(dev); + lp->dev = dev; spin_lock_init(&lp->lock); init_timer(&lp->timer); lp->timer.data = (unsigned long) dev; @@ -436,6 +484,9 @@ int arcnet_open(struct net_device *dev) arc_cont(D_PROTO, "\n"); } + tasklet_init(&lp->reply_tasklet, arcnet_reply_tasklet, + (unsigned long)lp); + arc_printk(D_INIT, dev, "arcnet_open: resetting card.\n"); /* try to put the card in a defined state - if it fails the first @@ -527,6 +578,8 @@ int arcnet_close(struct net_device *dev) netif_stop_queue(dev); netif_carrier_off(dev); + tasklet_kill(&lp->reply_tasklet); + /* flush TX and disable RX */ lp->hw.intmask(dev, 0); lp->hw.command(dev, NOTXcmd); /* stop transmit */ @@ -635,13 +688,13 @@ netdev_tx_t arcnet_send_packet(struct sk_buff *skb, txbuf = -1; if (txbuf != -1) { + lp->outgoing.skb = skb; if (proto->prepare_tx(dev, pkt, skb->len, txbuf) && !proto->ack_tx) { /* done right away and we don't want to acknowledge * the package later - forget about it now */ dev->stats.tx_bytes += skb->len; - dev_kfree_skb(skb); } else { /* do it the 'split' way */ lp->outgoing.proto = proto; @@ -842,8 +895,16 @@ irqreturn_t arcnet_interrupt(int irq, void *dev_id) /* a transmit finished, and we're interested in it. */ if ((status & lp->intmask & TXFREEflag) || lp->timed_out) { + int ackstatus; lp->intmask &= ~(TXFREEflag | EXCNAKflag); + if (status & TXACKflag) + ackstatus = 2; + else if (lp->excnak_pending) + ackstatus = 1; + else + ackstatus = 0; + arc_printk(D_DURING, dev, "TX IRQ (stat=%Xh)\n", status); @@ -866,18 +927,11 @@ irqreturn_t arcnet_interrupt(int irq, void *dev_id) if (lp->outgoing.proto && lp->outgoing.proto->ack_tx) { - int ackstatus; - - if (status & TXACKflag) - ackstatus = 2; - else if (lp->excnak_pending) - ackstatus = 1; - else - ackstatus = 0; - lp->outgoing.proto ->ack_tx(dev, ackstatus); } + lp->reply_status = ackstatus; + tasklet_hi_schedule(&lp->reply_tasklet); } if (lp->cur_tx != -1) release_arcbuf(dev, lp->cur_tx); |