diff options
Diffstat (limited to 'drivers/net/hamachi.c')
| -rw-r--r-- | drivers/net/hamachi.c | 78 |
1 files changed, 0 insertions, 78 deletions
diff --git a/drivers/net/hamachi.c b/drivers/net/hamachi.c index 80d25ed53344..a09041aa8509 100644 --- a/drivers/net/hamachi.c +++ b/drivers/net/hamachi.c @@ -132,13 +132,8 @@ static int tx_params[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; /* * RX_CHECKSUM turns on card-generated receive checksum generation for * TCP and UDP packets. Otherwise the upper layers do the calculation. - * TX_CHECKSUM won't do anything too useful, even if it works. There's no - * easy mechanism by which to tell the TCP/UDP stack that it need not - * generate checksums for this device. But if somebody can find a way - * to get that to work, most of the card work is in here already. * 3/10/1999 Pete Wyckoff <wyckoff@ca.sandia.gov> */ -#undef TX_CHECKSUM #define RX_CHECKSUM /* Operational parameters that usually are not changed. */ @@ -630,11 +625,6 @@ static int __devinit hamachi_init_one (struct pci_dev *pdev, SET_NETDEV_DEV(dev, &pdev->dev); -#ifdef TX_CHECKSUM - printk("check that skbcopy in ip_queue_xmit isn't happening\n"); - dev->hard_header_len += 8; /* for cksum tag */ -#endif - for (i = 0; i < 6; i++) dev->dev_addr[i] = 1 ? read_eeprom(ioaddr, 4 + i) : readb(ioaddr + StationAddr + i); @@ -937,11 +927,7 @@ static int hamachi_open(struct net_device *dev) /* always 1, takes no more time to do it */ writew(0x0001, ioaddr + RxChecksum); -#ifdef TX_CHECKSUM - writew(0x0001, ioaddr + TxChecksum); -#else writew(0x0000, ioaddr + TxChecksum); -#endif writew(0x8000, ioaddr + MACCnfg); /* Soft reset the MAC */ writew(0x215F, ioaddr + MACCnfg); writew(0x000C, ioaddr + FrameGap0); @@ -1226,40 +1212,6 @@ static void hamachi_init_ring(struct net_device *dev) } -#ifdef TX_CHECKSUM -#define csum_add(it, val) \ -do { \ - it += (u16) (val); \ - if (it & 0xffff0000) { \ - it &= 0xffff; \ - ++it; \ - } \ -} while (0) - /* printk("add %04x --> %04x\n", val, it); \ */ - -/* uh->len already network format, do not swap */ -#define pseudo_csum_udp(sum,ih,uh) do { \ - sum = 0; \ - csum_add(sum, (ih)->saddr >> 16); \ - csum_add(sum, (ih)->saddr & 0xffff); \ - csum_add(sum, (ih)->daddr >> 16); \ - csum_add(sum, (ih)->daddr & 0xffff); \ - csum_add(sum, cpu_to_be16(IPPROTO_UDP)); \ - csum_add(sum, (uh)->len); \ -} while (0) - -/* swap len */ -#define pseudo_csum_tcp(sum,ih,len) do { \ - sum = 0; \ - csum_add(sum, (ih)->saddr >> 16); \ - csum_add(sum, (ih)->saddr & 0xffff); \ - csum_add(sum, (ih)->daddr >> 16); \ - csum_add(sum, (ih)->daddr & 0xffff); \ - csum_add(sum, cpu_to_be16(IPPROTO_TCP)); \ - csum_add(sum, htons(len)); \ -} while (0) -#endif - static netdev_tx_t hamachi_start_xmit(struct sk_buff *skb, struct net_device *dev) { @@ -1292,36 +1244,6 @@ static netdev_tx_t hamachi_start_xmit(struct sk_buff *skb, hmp->tx_skbuff[entry] = skb; -#ifdef TX_CHECKSUM - { - /* tack on checksum tag */ - u32 tagval = 0; - struct ethhdr *eh = (struct ethhdr *)skb->data; - if (eh->h_proto == cpu_to_be16(ETH_P_IP)) { - struct iphdr *ih = (struct iphdr *)((char *)eh + ETH_HLEN); - if (ih->protocol == IPPROTO_UDP) { - struct udphdr *uh - = (struct udphdr *)((char *)ih + ih->ihl*4); - u32 offset = ((unsigned char *)uh + 6) - skb->data; - u32 pseudo; - pseudo_csum_udp(pseudo, ih, uh); - pseudo = htons(pseudo); - printk("udp cksum was %04x, sending pseudo %04x\n", - uh->check, pseudo); - uh->check = 0; /* zero out uh->check before card calc */ - /* - * start at 14 (skip ethhdr), store at offset (uh->check), - * use pseudo value given. - */ - tagval = (14 << 24) | (offset << 16) | pseudo; - } else if (ih->protocol == IPPROTO_TCP) { - printk("tcp, no auto cksum\n"); - } - } - *(u32 *)skb_push(skb, 8) = tagval; - } -#endif - hmp->tx_ring[entry].addr = cpu_to_leXX(pci_map_single(hmp->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE)); |