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ath10k: add new 4addr related fw_feature 

Some firmware revisions pad 4th hw address in
Native Wifi Rx decap. This is the case with 10.x
and it was assumed that this is true for all
firmware images.

However QCA988X with 999.999.0.636 and QCA61X4
with WLAN.RM.2.0-00088 don't have the padding.
Hence add a feature flag indicating that the
padding isn't present so firmware images can
advertise it appropriately. This way driver will
behave as it was before with old firmware blobs
and doesn't cause any regressions from user
perspective.

Effectively this patch enables QCA988X with
999.999.0.636 and QCA61X4 with WLAN.RM.2.0-00088
to set up client bridging provided user has an
updated firmware blob.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Michal Kazior 2015-05-19 14:09:34 +02:00 committed by Kalle Valo
parent 77258d409c
commit 48f4ca34f3
2 changed files with 15 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/net/wireless/ath/ath10k/core.h
View File

@ -463,6 +463,11 @@ enum ath10k_fw_features {
/* Don't trust error code from otp.bin */
ATH10K_FW_FEATURE_IGNORE_OTP_RESULT,
/* Some firmware revisions pad 4th hw address to 4 byte boundary making
* it 8 bytes long in Native Wifi Rx decap.
*/
ATH10K_FW_FEATURE_NO_NWIFI_DECAP_4ADDR_PADDING,
/* keep last */
ATH10K_FW_FEATURE_COUNT,
};

14
drivers/net/wireless/ath/ath10k/htt_rx.c
View File

@ -965,10 +965,16 @@ static void ath10k_process_rx(struct ath10k *ar,
ieee80211_rx(ar->hw, skb);
}
static int ath10k_htt_rx_nwifi_hdrlen(struct ieee80211_hdr *hdr)
static int ath10k_htt_rx_nwifi_hdrlen(struct ath10k *ar,
struct ieee80211_hdr *hdr)
{
/* nwifi header is padded to 4 bytes. this fixes 4addr rx */
return round_up(ieee80211_hdrlen(hdr->frame_control), 4);
int len = ieee80211_hdrlen(hdr->frame_control);
if (!test_bit(ATH10K_FW_FEATURE_NO_NWIFI_DECAP_4ADDR_PADDING,
ar->fw_features))
len = round_up(len, 4);
return len;
}
static void ath10k_htt_rx_h_undecap_raw(struct ath10k *ar,
@ -1067,7 +1073,7 @@ static void ath10k_htt_rx_h_undecap_nwifi(struct ath10k *ar,
/* pull decapped header and copy SA & DA */
hdr = (struct ieee80211_hdr *)msdu->data;
hdr_len = ath10k_htt_rx_nwifi_hdrlen(hdr);
hdr_len = ath10k_htt_rx_nwifi_hdrlen(ar, hdr);
ether_addr_copy(da, ieee80211_get_DA(hdr));
ether_addr_copy(sa, ieee80211_get_SA(hdr));
skb_pull(msdu, hdr_len);