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authorBen Hutchings <bhutchings@solarflare.com>2008-05-07 12:51:12 +0100
committerJeff Garzik <jgarzik@redhat.com>2008-05-13 01:31:40 -0400
commitb9b39b625cf57cd0ea998717598b68963cbec3cb (patch)
tree19f358d15b6c75d660cf1ea369559f58ad9f0c1e /drivers/net/sfc/efx.c
parent48cfb14f8b89d4d5b3df6c16f08b258686fb12ad (diff)
[netdrvr] sfc: Add TSO support
The SFC4000 controller does not have hardware support for TSO, and the core GSO code incurs a high cost in allocating and freeing skbs. This TSO implementation uses lightweight packet header structures and is substantially faster. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/net/sfc/efx.c')
-rw-r--r--drivers/net/sfc/efx.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c
index 59edcf793c1..418f2e53a95 100644
--- a/drivers/net/sfc/efx.c
+++ b/drivers/net/sfc/efx.c
@@ -1873,6 +1873,7 @@ static int efx_init_struct(struct efx_nic *efx, struct efx_nic_type *type,
tx_queue->queue = i;
tx_queue->buffer = NULL;
tx_queue->channel = &efx->channel[0]; /* for safety */
+ tx_queue->tso_headers_free = NULL;
}
for (i = 0; i < EFX_MAX_RX_QUEUES; i++) {
rx_queue = &efx->rx_queue[i];
@@ -2071,7 +2072,8 @@ static int __devinit efx_pci_probe(struct pci_dev *pci_dev,
net_dev = alloc_etherdev(sizeof(*efx));
if (!net_dev)
return -ENOMEM;
- net_dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_HIGHDMA;
+ net_dev->features |= (NETIF_F_IP_CSUM | NETIF_F_SG |
+ NETIF_F_HIGHDMA | NETIF_F_TSO);
if (lro)
net_dev->features |= NETIF_F_LRO;
efx = net_dev->priv;