diff options
Diffstat (limited to 'drivers/net/arcnet/capmode.c')
| -rw-r--r-- | drivers/net/arcnet/capmode.c | 177 |
1 files changed, 78 insertions, 99 deletions
diff --git a/drivers/net/arcnet/capmode.c b/drivers/net/arcnet/capmode.c index 355797f7004..42fce91b71f 100644 --- a/drivers/net/arcnet/capmode.c +++ b/drivers/net/arcnet/capmode.c @@ -37,69 +37,6 @@ #define VERSION "arcnet: cap mode (`c') encapsulation support loaded.\n" - -static void rx(struct net_device *dev, int bufnum, - struct archdr *pkthdr, int length); -static int build_header(struct sk_buff *skb, - struct net_device *dev, - unsigned short type, - uint8_t daddr); -static int prepare_tx(struct net_device *dev, struct archdr *pkt, int length, - int bufnum); -static int ack_tx(struct net_device *dev, int acked); - - -static struct ArcProto capmode_proto = -{ - 'r', - XMTU, - 0, - rx, - build_header, - prepare_tx, - NULL, - ack_tx -}; - - -static void arcnet_cap_init(void) -{ - int count; - - for (count = 1; count <= 8; count++) - if (arc_proto_map[count] == arc_proto_default) - arc_proto_map[count] = &capmode_proto; - - /* for cap mode, we only set the bcast proto if there's no better one */ - if (arc_bcast_proto == arc_proto_default) - arc_bcast_proto = &capmode_proto; - - arc_proto_default = &capmode_proto; - arc_raw_proto = &capmode_proto; -} - - -#ifdef MODULE - -static int __init capmode_module_init(void) -{ - printk(VERSION); - arcnet_cap_init(); - return 0; -} - -static void __exit capmode_module_exit(void) -{ - arcnet_unregister_proto(&capmode_proto); -} -module_init(capmode_module_init); -module_exit(capmode_module_exit); - -MODULE_LICENSE("GPL"); -#endif /* MODULE */ - - - /* packet receiver */ static void rx(struct net_device *dev, int bufnum, struct archdr *pkthdr, int length) @@ -231,65 +168,107 @@ static int prepare_tx(struct net_device *dev, struct archdr *pkt, int length, BUGMSG(D_DURING, "prepare_tx: length=%d ofs=%d\n", length,ofs); - // Copy the arcnet-header + the protocol byte down: + /* Copy the arcnet-header + the protocol byte down: */ lp->hw.copy_to_card(dev, bufnum, 0, hard, ARC_HDR_SIZE); lp->hw.copy_to_card(dev, bufnum, ofs, &pkt->soft.cap.proto, sizeof(pkt->soft.cap.proto)); - // Skip the extra integer we have written into it as a cookie - // but write the rest of the message: + /* Skip the extra integer we have written into it as a cookie + but write the rest of the message: */ lp->hw.copy_to_card(dev, bufnum, ofs+1, ((unsigned char*)&pkt->soft.cap.mes),length-1); lp->lastload_dest = hard->dest; - return 1; /* done */ + return 1; /* done */ } - static int ack_tx(struct net_device *dev, int acked) { - struct arcnet_local *lp = netdev_priv(dev); - struct sk_buff *ackskb; - struct archdr *ackpkt; - int length=sizeof(struct arc_cap); + struct arcnet_local *lp = netdev_priv(dev); + struct sk_buff *ackskb; + struct archdr *ackpkt; + int length=sizeof(struct arc_cap); - BUGMSG(D_DURING, "capmode: ack_tx: protocol: %x: result: %d\n", - lp->outgoing.skb->protocol, acked); + BUGMSG(D_DURING, "capmode: ack_tx: protocol: %x: result: %d\n", + lp->outgoing.skb->protocol, acked); - BUGLVL(D_SKB) arcnet_dump_skb(dev, lp->outgoing.skb, "ack_tx"); + BUGLVL(D_SKB) arcnet_dump_skb(dev, lp->outgoing.skb, "ack_tx"); - /* Now alloc a skb to send back up through the layers: */ - ackskb = alloc_skb(length + ARC_HDR_SIZE , GFP_ATOMIC); - if (ackskb == NULL) { - BUGMSG(D_NORMAL, "Memory squeeze, can't acknowledge.\n"); - goto free_outskb; - } + /* Now alloc a skb to send back up through the layers: */ + ackskb = alloc_skb(length + ARC_HDR_SIZE , GFP_ATOMIC); + if (ackskb == NULL) { + BUGMSG(D_NORMAL, "Memory squeeze, can't acknowledge.\n"); + goto free_outskb; + } + + skb_put(ackskb, length + ARC_HDR_SIZE ); + ackskb->dev = dev; + + skb_reset_mac_header(ackskb); + ackpkt = (struct archdr *)skb_mac_header(ackskb); + /* skb_pull(ackskb, ARC_HDR_SIZE); */ - skb_put(ackskb, length + ARC_HDR_SIZE ); - ackskb->dev = dev; + skb_copy_from_linear_data(lp->outgoing.skb, ackpkt, + ARC_HDR_SIZE + sizeof(struct arc_cap)); + ackpkt->soft.cap.proto = 0; /* using protocol 0 for acknowledge */ + ackpkt->soft.cap.mes.ack=acked; - skb_reset_mac_header(ackskb); - ackpkt = (struct archdr *)skb_mac_header(ackskb); - /* skb_pull(ackskb, ARC_HDR_SIZE); */ + BUGMSG(D_PROTO, "Ackknowledge for cap packet %x.\n", + *((int*)&ackpkt->soft.cap.cookie[0])); + ackskb->protocol = cpu_to_be16(ETH_P_ARCNET); - skb_copy_from_linear_data(lp->outgoing.skb, ackpkt, - ARC_HDR_SIZE + sizeof(struct arc_cap)); - ackpkt->soft.cap.proto=0; /* using protocol 0 for acknowledge */ - ackpkt->soft.cap.mes.ack=acked; + BUGLVL(D_SKB) arcnet_dump_skb(dev, ackskb, "ack_tx_recv"); + netif_rx(ackskb); - BUGMSG(D_PROTO, "Ackknowledge for cap packet %x.\n", - *((int*)&ackpkt->soft.cap.cookie[0])); +free_outskb: + dev_kfree_skb_irq(lp->outgoing.skb); + lp->outgoing.proto = NULL; /* We are always finished when in this protocol */ - ackskb->protocol = cpu_to_be16(ETH_P_ARCNET); + return 0; +} - BUGLVL(D_SKB) arcnet_dump_skb(dev, ackskb, "ack_tx_recv"); - netif_rx(ackskb); +static struct ArcProto capmode_proto = +{ + 'r', + XMTU, + 0, + rx, + build_header, + prepare_tx, + NULL, + ack_tx +}; - free_outskb: - dev_kfree_skb_irq(lp->outgoing.skb); - lp->outgoing.proto = NULL; /* We are always finished when in this protocol */ +static void arcnet_cap_init(void) +{ + int count; - return 0; + for (count = 1; count <= 8; count++) + if (arc_proto_map[count] == arc_proto_default) + arc_proto_map[count] = &capmode_proto; + + /* for cap mode, we only set the bcast proto if there's no better one */ + if (arc_bcast_proto == arc_proto_default) + arc_bcast_proto = &capmode_proto; + + arc_proto_default = &capmode_proto; + arc_raw_proto = &capmode_proto; } + +static int __init capmode_module_init(void) +{ + printk(VERSION); + arcnet_cap_init(); + return 0; +} + +static void __exit capmode_module_exit(void) +{ + arcnet_unregister_proto(&capmode_proto); +} +module_init(capmode_module_init); +module_exit(capmode_module_exit); + +MODULE_LICENSE("GPL"); |