wl18xx: add module parameter to disable TCP checksum

Add a new module parameter to disable TCP checksum offload.

Signed-off-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>

diff --git a/drivers/net/wireless/ti/wl18xx/main.c b/drivers/net/wireless/ti/wl18xx/main.c
index 2f0cbf8..b76b6ac 100644 (file)
--- a/drivers/net/wireless/ti/wl18xx/main.c
+++ b/drivers/net/wireless/ti/wl18xx/main.c
@@ -47,6 +47,7 @@ static char *board_type_param;
 static bool dc2dc_param = false;
 static int n_antennas_2_param = 1;
 static int n_antennas_5_param = 1;
+static bool checksum_param = true;
 
 static const u8 wl18xx_rate_to_idx_2ghz[] = {
        /* MCS rates are used only with 11n */
@@ -865,9 +866,11 @@ static int wl18xx_hw_init(struct wl1271 *wl)
        if (ret < 0)
                return ret;
 
-       ret = wl18xx_acx_set_checksum_state(wl);
-       if (ret != 0)
-               return ret;
+       if (checksum_param) {
+               ret = wl18xx_acx_set_checksum_state(wl);
+               if (ret != 0)
+                       return ret;
+       }
 
        return ret;
 }
@@ -879,6 +882,11 @@ static void wl18xx_set_tx_desc_csum(struct wl1271 *wl,
        u32 ip_hdr_offset;
        struct iphdr *ip_hdr;
 
+       if (!checksum_param) {
+               desc->wl18xx_checksum_data = 0;
+               return;
+       }
+
        if (skb->ip_summed != CHECKSUM_PARTIAL) {
                desc->wl18xx_checksum_data = 0;
                return;
@@ -1065,6 +1073,11 @@ int __devinit wl18xx_probe(struct platform_device *pdev)
                return -EINVAL;
        }
 
+       if (!checksum_param) {
+               wl18xx_ops.set_rx_csum = NULL;
+               wl18xx_ops.init_vif = NULL;
+       }
+
        wl18xx_conf_init(wl);
 
        return wlcore_probe(wl, pdev);
@@ -1114,6 +1127,9 @@ MODULE_PARM_DESC(n_antennas_2, "Number of installed 2.4GHz antennas: 1 (default)
 module_param_named(n_antennas_5, n_antennas_5_param, uint, S_IRUSR);
 MODULE_PARM_DESC(n_antennas_5, "Number of installed 5GHz antennas: 1 (default) or 2");
 
+module_param_named(checksum, checksum_param, bool, S_IRUSR);
+MODULE_PARM_DESC(checksum, "Enable TCP checksum: boolean (defaults to true)");
+
 MODULE_LICENSE("GPL v2");
 MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
 MODULE_FIRMWARE(WL18XX_FW_NAME);