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sfc: Enable TSO for 802.1q VLAN devices

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Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Ben Hutchings 2008-09-01 12:48:23 +01:00 committed by Jeff Garzik
parent dacccc7411
commit 740847dab1
2 changed files with 20 additions and 7 deletions
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2
drivers/net/sfc/efx.c
View file

@ -2079,7 +2079,7 @@ static int __devinit efx_pci_probe(struct pci_dev *pci_dev,
net_dev->features |= NETIF_F_LRO;
/* Mask for features that also apply to VLAN devices */
net_dev->vlan_features |= (NETIF_F_ALL_CSUM | NETIF_F_SG |
NETIF_F_HIGHDMA);
NETIF_F_HIGHDMA | NETIF_F_TSO);
efx = netdev_priv(net_dev);
pci_set_drvdata(pci_dev, efx);
rc = efx_init_struct(efx, type, pci_dev, net_dev);

25
drivers/net/sfc/tx.c
View file

@ -105,7 +105,7 @@ struct efx_tso_header {
};
static int efx_enqueue_skb_tso(struct efx_tx_queue *tx_queue,
const struct sk_buff *skb);
struct sk_buff *skb);
static void efx_fini_tso(struct efx_tx_queue *tx_queue);
static void efx_tsoh_heap_free(struct efx_tx_queue *tx_queue,
struct efx_tso_header *tsoh);
@ -139,7 +139,7 @@ static void efx_tsoh_free(struct efx_tx_queue *tx_queue,
* You must hold netif_tx_lock() to call this function.
*/
static int efx_enqueue_skb(struct efx_tx_queue *tx_queue,
const struct sk_buff *skb)
struct sk_buff *skb)
{
struct efx_nic *efx = tx_queue->efx;
struct pci_dev *pci_dev = efx->pci_dev;
@ -578,11 +578,24 @@ struct tso_state {
* Verify that our various assumptions about sk_buffs and the conditions
* under which TSO will be attempted hold true.
*/
static void efx_tso_check_safe(const struct sk_buff *skb)
static void efx_tso_check_safe(struct sk_buff *skb)
{
EFX_BUG_ON_PARANOID(skb->protocol != htons(ETH_P_IP));
__be16 protocol = skb->protocol;
EFX_BUG_ON_PARANOID(((struct ethhdr *)skb->data)->h_proto !=
skb->protocol);
protocol);
if (protocol == htons(ETH_P_8021Q)) {
/* Find the encapsulated protocol; reset network header
* and transport header based on that. */
struct vlan_ethhdr *veh = (struct vlan_ethhdr *)skb->data;
protocol = veh->h_vlan_encapsulated_proto;
skb_set_network_header(skb, sizeof(*veh));
if (protocol == htons(ETH_P_IP))
skb_set_transport_header(skb, sizeof(*veh) +
4 * ip_hdr(skb)->ihl);
}
EFX_BUG_ON_PARANOID(protocol != htons(ETH_P_IP));
EFX_BUG_ON_PARANOID(ip_hdr(skb)->protocol != IPPROTO_TCP);
EFX_BUG_ON_PARANOID((PTR_DIFF(tcp_hdr(skb), skb->data)
+ (tcp_hdr(skb)->doff << 2u)) >
@ -1020,7 +1033,7 @@ static int tso_start_new_packet(struct efx_tx_queue *tx_queue,
* %NETDEV_TX_OK or %NETDEV_TX_BUSY.
*/
static int efx_enqueue_skb_tso(struct efx_tx_queue *tx_queue,
const struct sk_buff *skb)
struct sk_buff *skb)
{
struct efx_nic *efx = tx_queue->efx;
int frag_i, rc, rc2 = NETDEV_TX_OK;