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ath6kl: Support for TCP checksum offload to firmware

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The change enables offloading TCP checksum calculation to firmware.
There are still some issues with the checksum offload so better to
disable it by default until the issues are resolved.

To enable TCP checksum offload for tx and rx paths, use
the ethtool as follows:
ethtool -K <interface> tx on
ethtool -K <interface> rx on

To disable TCP checksum offload, for tx and rx paths, use
the ethtool as follows:
ethtool -K <interface> tx off
ethtool -K <interface> rx off

kvalo: indentation changes

Signed-off-by: Rishi Panjwani <rpanjwan@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Rishi Panjwani
2011-12-27 14:28:00 -08:00
committed by Kalle Valo
parent ba1f6fe393
commit bc48ad31c5
4 changed files with 72 additions and 4 deletions
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33
drivers/net/wireless/ath/ath6kl/main.c
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@@ -1020,11 +1020,44 @@ static struct net_device_stats *ath6kl_get_stats(struct net_device *dev)
return &vif->net_stats;
}
static int ath6kl_set_features(struct net_device *dev, u32 features)
{
struct ath6kl_vif *vif = netdev_priv(dev);
struct ath6kl *ar = vif->ar;
int err = 0;
if ((features & NETIF_F_RXCSUM) &&
(ar->rx_meta_ver != WMI_META_VERSION_2)) {
ar->rx_meta_ver = WMI_META_VERSION_2;
err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi,
vif->fw_vif_idx,
ar->rx_meta_ver, 0, 0);
if (err) {
dev->features = features & ~NETIF_F_RXCSUM;
return err;
}
} else if (!(features & NETIF_F_RXCSUM) &&
(ar->rx_meta_ver == WMI_META_VERSION_2)) {
ar->rx_meta_ver = 0;
err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi,
vif->fw_vif_idx,
ar->rx_meta_ver, 0, 0);
if (err) {
dev->features = features | NETIF_F_RXCSUM;
return err;
}
}
return err;
}
static struct net_device_ops ath6kl_netdev_ops = {
.ndo_open = ath6kl_open,
.ndo_stop = ath6kl_close,
.ndo_start_xmit = ath6kl_data_tx,
.ndo_get_stats = ath6kl_get_stats,
.ndo_set_features = ath6kl_set_features,
};
void init_netdev(struct net_device *dev)