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wil6210: Send EAPOL frames using normal Tx queue 

No more need for special processing of EAPOL, FW can now send EAPOL frames
using normal Tx queue for TID 0

This fixes "schedule while atomic" bug - start_xmit called in softirq context;
while WMI mechanism that was used may sleep.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Vladimir Kondratiev 2013-06-09 09:12:54 +03:00 committed by John W. Linville
parent 92646c9f1f
commit d58db4e49f
3 changed files with 9 additions and 46 deletions
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20
drivers/net/wireless/ath/wil6210/txrx.c
View File

@ -768,18 +768,16 @@ netdev_tx_t wil_start_xmit(struct sk_buff *skb, struct net_device *ndev)
wil_err(wil, "Xmit in monitor mode not supported\n");
goto drop;
}
if (skb->protocol == cpu_to_be16(ETH_P_PAE)) {
rc = wmi_tx_eapol(wil, skb);
} else {
/* find vring */
vring = wil_find_tx_vring(wil, skb);
if (!vring) {
wil_err(wil, "No Tx VRING available\n");
goto drop;
}
/* set up vring entry */
rc = wil_tx_vring(wil, vring, skb);
/* find vring */
vring = wil_find_tx_vring(wil, skb);
if (!vring) {
wil_err(wil, "No Tx VRING available\n");
goto drop;
}
/* set up vring entry */
rc = wil_tx_vring(wil, vring, skb);
switch (rc) {
case 0:
/* statistics will be updated on the tx_complete */

1
drivers/net/wireless/ath/wil6210/wil6210.h
View File

@ -329,7 +329,6 @@ int wmi_set_ssid(struct wil6210_priv *wil, u8 ssid_len, const void *ssid);
int wmi_get_ssid(struct wil6210_priv *wil, u8 *ssid_len, void *ssid);
int wmi_set_channel(struct wil6210_priv *wil, int channel);
int wmi_get_channel(struct wil6210_priv *wil, int *channel);
int wmi_tx_eapol(struct wil6210_priv *wil, struct sk_buff *skb);
int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index,
const void *mac_addr);
int wmi_add_cipher_key(struct wil6210_priv *wil, u8 key_index,

34
drivers/net/wireless/ath/wil6210/wmi.c
View File

@ -839,40 +839,6 @@ int wmi_p2p_cfg(struct wil6210_priv *wil, int channel)
return wmi_send(wil, WMI_P2P_CFG_CMDID, &cmd, sizeof(cmd));
}
int wmi_tx_eapol(struct wil6210_priv *wil, struct sk_buff *skb)
{
struct wmi_eapol_tx_cmd *cmd;
struct ethhdr *eth;
u16 eapol_len = skb->len - ETH_HLEN;
void *eapol = skb->data + ETH_HLEN;
uint i;
int rc;
skb_set_mac_header(skb, 0);
eth = eth_hdr(skb);
wil_dbg_wmi(wil, "EAPOL %d bytes to %pM\n", eapol_len, eth->h_dest);
for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) {
if (memcmp(wil->dst_addr[i], eth->h_dest, ETH_ALEN) == 0)
goto found_dest;
}
return -EINVAL;
found_dest:
/* find out eapol data & len */
cmd = kzalloc(sizeof(*cmd) + eapol_len, GFP_KERNEL);
if (!cmd)
return -EINVAL;
memcpy(cmd->dst_mac, eth->h_dest, ETH_ALEN);
cmd->eapol_len = cpu_to_le16(eapol_len);
memcpy(cmd->eapol, eapol, eapol_len);
rc = wmi_send(wil, WMI_EAPOL_TX_CMDID, cmd, sizeof(*cmd) + eapol_len);
kfree(cmd);
return rc;
}
int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index,
const void *mac_addr)
{