ath9k: Fix TX fragmentation
Assigning sequence number for frames without taking care
of the fragment field breaks transmission of fragmented frames.
Fix this by assigning the fragment number properly.
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index 834e6bc..23eaa1b 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -1820,6 +1820,7 @@
struct ath_frame_info *fi = get_frame_info(skb);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct ath_buf *bf;
+ int fragno;
u16 seqno;
bf = ath_tx_get_buffer(sc);
@@ -1831,9 +1832,16 @@
ATH_TXBUF_RESET(bf);
if (tid) {
+ fragno = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG;
seqno = tid->seq_next;
hdr->seq_ctrl = cpu_to_le16(tid->seq_next << IEEE80211_SEQ_SEQ_SHIFT);
- INCR(tid->seq_next, IEEE80211_SEQ_MAX);
+
+ if (fragno)
+ hdr->seq_ctrl |= cpu_to_le16(fragno);
+
+ if (!ieee80211_has_morefrags(hdr->frame_control))
+ INCR(tid->seq_next, IEEE80211_SEQ_MAX);
+
bf->bf_state.seqno = seqno;
}