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wl12xx: add TX_HW_ATTR_HOST_ENCRYPT flag 

In WEP shared authentication, we encrypt the auth frame
in the host, and we want the fw to pass it as-is.
Use the TX_HW_ATTR_HOST_ENCRYPT flag in order to indicate
it to the fw.

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
This commit is contained in:
Eliad Peller 2012-01-31 17:54:42 +02:00 committed by Luciano Coelho
parent defe02c720
commit f4f57943f2
2 changed files with 14 additions and 4 deletions
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17
drivers/net/wireless/wl12xx/tx.c
View File

@ -255,16 +255,20 @@ static void wl1271_tx_fill_hdr(struct wl1271 *wl, struct wl12xx_vif *wlvif,
int aligned_len, ac, rate_idx;
s64 hosttime;
u16 tx_attr = 0;
__le16 frame_control;
struct ieee80211_hdr *hdr;
u8 *frame_start;
bool is_dummy;
desc = (struct wl1271_tx_hw_descr *) skb->data;
frame_start = (u8 *)(desc + 1);
hdr = (struct ieee80211_hdr *)(frame_start + extra);
frame_control = hdr->frame_control;
/* relocate space for security header */
if (extra) {
void *framestart = skb->data + sizeof(*desc);
u16 fc = *(u16 *)(framestart + extra);
int hdrlen = ieee80211_hdrlen(cpu_to_le16(fc));
memmove(framestart, framestart + extra, hdrlen);
int hdrlen = ieee80211_hdrlen(frame_control);
memmove(frame_start, hdr, hdrlen);
}
/* configure packet life time */
@ -353,6 +357,11 @@ static void wl1271_tx_fill_hdr(struct wl1271 *wl, struct wl12xx_vif *wlvif,
desc->wl127x_mem.total_mem_blocks);
}
/* for WEP shared auth - no fw encryption is needed */
if (ieee80211_is_auth(frame_control) &&
ieee80211_has_protected(frame_control))
tx_attr |= TX_HW_ATTR_HOST_ENCRYPT;
desc->tx_attr = cpu_to_le16(tx_attr);
}

1
drivers/net/wireless/wl12xx/tx.h
View File

@ -39,6 +39,7 @@
#define TX_HW_ATTR_LAST_WORD_PAD (BIT(10) | BIT(11))
#define TX_HW_ATTR_TX_CMPLT_REQ BIT(12)
#define TX_HW_ATTR_TX_DUMMY_REQ BIT(13)
#define TX_HW_ATTR_HOST_ENCRYPT BIT(14)
#define TX_HW_ATTR_OFST_SAVE_RETRIES 0
#define TX_HW_ATTR_OFST_HEADER_PAD 1