From: Juuso Oikarinen <juuso.oikarinen@xxxxxxxxx>
Correct the position to which TKIP header space is appended for TX
packets.
Signed-off-by: Juuso Oikarinen <juuso.oikarinen@xxxxxxxxx>
Reviewed-by: Vidhya Govindan <vidhya.govindan@xxxxxxxxx>
Signed-off-by: Luciano Coelho <luciano.coelho@xxxxxxxxx>
---
drivers/net/wireless/wl12xx/wl1271_main.c | 9 +++------
drivers/net/wireless/wl12xx/wl1271_tx.c | 27 +++++++++++++++++----------
2 files changed, 20 insertions(+), 16 deletions(-)
diff --git a/drivers/net/wireless/wl12xx/wl1271_main.c b/drivers/net/wireless/wl12xx/wl1271_main.c
index bedd19b..3d629da 100644
--- a/drivers/net/wireless/wl12xx/wl1271_main.c
+++ b/drivers/net/wireless/wl12xx/wl1271_main.c
@@ -1160,12 +1160,9 @@ static int wl1271_register_hw(struct wl1271 *wl)
static int wl1271_init_ieee80211(struct wl1271 *wl)
{
- /*
- * The tx descriptor buffer and the TKIP space.
- *
- * FIXME: add correct 1271 descriptor size
- */
- wl->hw->extra_tx_headroom = WL1271_TKIP_IV_SPACE;
+ /* The tx descriptor buffer and the TKIP space. */
+ wl->hw->extra_tx_headroom = WL1271_TKIP_IV_SPACE +
+ sizeof(struct wl1271_tx_hw_descr);
/* unit us */
/* FIXME: find a proper value */
diff --git a/drivers/net/wireless/wl12xx/wl1271_tx.c b/drivers/net/wireless/wl12xx/wl1271_tx.c
index 162f026..1ad1bc3 100644
--- a/drivers/net/wireless/wl12xx/wl1271_tx.c
+++ b/drivers/net/wireless/wl12xx/wl1271_tx.c
@@ -92,6 +92,14 @@ static int wl1271_tx_fill_hdr(struct wl1271 *wl, struct sk_buff *skb,
desc = (struct wl1271_tx_hw_descr *) skb->data;
+ /* relocate space for security header */
+ if (extra) {
+ void *framestart = skb->data + sizeof(*desc);
+ u16 fc = *(u16 *)(framestart + extra);
+ int hdrlen = ieee80211_hdrlen(fc);
+ memmove(framestart, framestart + extra, hdrlen);
+ }
+
/* configure packet life time */
desc->start_time = jiffies_to_usecs(jiffies) - wl->time_offset;
desc->life_time = TX_HW_MGMT_PKT_LIFETIME_TU;
@@ -257,7 +265,6 @@ static void wl1271_tx_complete_packet(struct wl1271 *wl,
struct ieee80211_tx_info *info;
struct sk_buff *skb;
- u32 header_len;
u16 seq;
int id = result->id;
@@ -295,22 +302,22 @@ static void wl1271_tx_complete_packet(struct wl1271 *wl,
wl->tx_security_seq_32++;
wl->tx_security_seq_16 = seq;
- /* get header len */
+ /* remove private header from packet */
+ skb_pull(skb, sizeof(struct wl1271_tx_hw_descr));
+
+ /* remove TKIP header space if present */
if (info->control.hw_key &&
- info->control.hw_key->alg == ALG_TKIP)
- header_len = WL1271_TKIP_IV_SPACE +
- sizeof(struct wl1271_tx_hw_descr);
- else
- header_len = sizeof(struct wl1271_tx_hw_descr);
+ info->control.hw_key->alg == ALG_TKIP) {
+ int hdrlen = ieee80211_get_hdrlen_from_skb(skb);
+ memmove(skb->data + WL1271_TKIP_IV_SPACE, skb->data, hdrlen);
+ skb_pull(skb, WL1271_TKIP_IV_SPACE);
+ }
wl1271_debug(DEBUG_TX, "tx status id %u skb 0x%p failures %u rate 0x%x"
" status 0x%x",
result->id, skb, result->ack_failures,
result->rate_class_index, result->status);
- /* remove private header from packet */
- skb_pull(skb, header_len);
-
/* return the packet to the stack */
ieee80211_tx_status(wl->hw, skb);
wl->tx_frames[result->id] = NULL;
--
1.5.6.5
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