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wil6210: Enable TCP/UDP checksum HW offload

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Add support for TCP and UDP HW checksum offloading.
RX chain is allways configured for offload mode.
In case of checksum error in RX path the DMA L4 error bit(5)
will be set to 1 and driver will drop the packet.
TX checksum offloading is configrable (ethtool -K).
TX descriptors are configured for checksum offload according
to the SKB protocol type (TCP/UDP, IPV4/6), Upon mismatch drop
the TX packet (checksum required but not TCP/UDP IPV4/6 type).

Signed-off-by: Kirshenbaum Erez <erezk@wilocity.com>
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Kirshenbaum Erez
2013-07-21 11:34:37 +03:00
committed by John W. Linville
parent c2a146f610
commit 504937d493
4 changed files with 101 additions and 3 deletions
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6
drivers/net/wireless/ath/wil6210/wmi.c
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@@ -924,6 +924,12 @@ int wmi_rx_chain_add(struct wil6210_priv *wil, struct vring *vring)
cmd.sniffer_cfg.phy_support =
cpu_to_le32((wil->monitor_flags & MONITOR_FLAG_CONTROL)
? WMI_SNIFFER_CP : WMI_SNIFFER_DP);
} else {
/* Initialize offload (in non-sniffer mode).
* Linux IP stack always calculates IP checksum
* HW always calculate TCP/UDP checksum
*/
cmd.l3_l4_ctrl |= (1 << L3_L4_CTRL_TCPIP_CHECKSUM_EN_POS);
}
/* typical time for secure PCP is 840ms */
rc = wmi_call(wil, WMI_CFG_RX_CHAIN_CMDID, &cmd, sizeof(cmd),