[PATCH 3/4] wl12xx: add TX_HW_ATTR_HOST_ENCRYPT flag
From: Eliad Peller <hidden>
Date: 2012-01-31 15:51:19
Subsystem:
networking drivers (wireless), the rest · Maintainers:
Johannes Berg, Linus Torvalds
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 <redacted> --- depends on the "wl12xx: update fw api" patchset drivers/net/wireless/wl12xx/tx.c | 17 +++++++++++++---- drivers/net/wireless/wl12xx/tx.h | 1 + 2 files changed, 14 insertions(+), 4 deletions(-)
diff --git a/drivers/net/wireless/wl12xx/tx.c b/drivers/net/wireless/wl12xx/tx.c
index ee313e7..1f5cc2a 100644
--- a/drivers/net/wireless/wl12xx/tx.c
+++ b/drivers/net/wireless/wl12xx/tx.c@@ -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); }
diff --git a/drivers/net/wireless/wl12xx/tx.h b/drivers/net/wireless/wl12xx/tx.h
index 2dbb24e..7ceb3ce 100644
--- a/drivers/net/wireless/wl12xx/tx.h
+++ b/drivers/net/wireless/wl12xx/tx.h@@ -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
--
1.7.6.401.g6a319