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e1000: FIX: enable hw TSO for IPV6 

Enable TSO for IPV6. All e1000 hardware supports it. This reduces CPU
utilizations by 50% when transmitting IPv6 frames.

Fix symbol naming enabling ipv6 TSO. Turn off TSO6 for 10/100.

Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
This commit is contained in:
Auke Kok 2006-11-01 08:47:36 -08:00 committed by Jeff Garzik
parent b00dae7cce
commit 87ca4e5b8d
3 changed files with 24 additions and 5 deletions
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3
drivers/net/e1000/e1000.h
View File

@ -59,6 +59,9 @@
#include <linux/capability.h>
#include <linux/in.h>
#include <linux/ip.h>
#ifdef NETIF_F_TSO6
#include <linux/ipv6.h>
#endif
#include <linux/tcp.h>
#include <linux/udp.h>
#include <net/pkt_sched.h>

7
drivers/net/e1000/e1000_ethtool.c
View File

@ -348,6 +348,13 @@ e1000_set_tso(struct net_device *netdev, uint32_t data)
else
netdev->features &= ~NETIF_F_TSO;
#ifdef NETIF_F_TSO6
if (data)
netdev->features |= NETIF_F_TSO6;
else
netdev->features &= ~NETIF_F_TSO6;
#endif
DPRINTK(PROBE, INFO, "TSO is %s\n", data ? "Enabled" : "Disabled");
adapter->tso_force = TRUE;
return 0;

19
drivers/net/e1000/e1000_main.c
View File

@ -844,9 +844,9 @@ e1000_probe(struct pci_dev *pdev,
(adapter->hw.mac_type != e1000_82547))
netdev->features |= NETIF_F_TSO;
#ifdef NETIF_F_TSO_IPV6
#ifdef NETIF_F_TSO6
if (adapter->hw.mac_type > e1000_82547_rev_2)
netdev->features |= NETIF_F_TSO_IPV6;
netdev->features |= NETIF_F_TSO6;
#endif
#endif
if (pci_using_dac)
@ -1814,8 +1814,11 @@ e1000_setup_rctl(struct e1000_adapter *adapter)
/* Configure extra packet-split registers */
rfctl = E1000_READ_REG(&adapter->hw, RFCTL);
rfctl |= E1000_RFCTL_EXTEN;
/* disable IPv6 packet split support */
rfctl |= E1000_RFCTL_IPV6_DIS;
/* disable packet split support for IPv6 extension headers,
* because some malformed IPv6 headers can hang the RX */
rfctl |= (E1000_RFCTL_IPV6_EX_DIS |
E1000_RFCTL_NEW_IPV6_EXT_DIS);
E1000_WRITE_REG(&adapter->hw, RFCTL, rfctl);
rctl |= E1000_RCTL_DTYP_PS;
@ -2473,9 +2476,15 @@ e1000_watchdog(unsigned long data)
DPRINTK(PROBE,INFO,
"10/100 speed: disabling TSO\n");
netdev->features &= ~NETIF_F_TSO;
#ifdef NETIF_F_TSO6
netdev->features &= ~NETIF_F_TSO6;
#endif
break;
case SPEED_1000:
netdev->features |= NETIF_F_TSO;
#ifdef NETIF_F_TSO6
netdev->features |= NETIF_F_TSO6;
#endif
break;
default:
/* oops */
@ -2610,7 +2619,7 @@ e1000_tso(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
0);
cmd_length = E1000_TXD_CMD_IP;
ipcse = skb->h.raw - skb->data - 1;
#ifdef NETIF_F_TSO_IPV6
#ifdef NETIF_F_TSO6
} else if (skb->protocol == htons(ETH_P_IPV6)) {
skb->nh.ipv6h->payload_len = 0;
skb->h.th->check =