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path: root/drivers/net/hamachi.c
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Diffstat (limited to 'drivers/net/hamachi.c')
-rw-r--r--drivers/net/hamachi.c78
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));