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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>
This commit is contained in:
Sujith Manoharan 2012-04-17 08:34:50 +05:30 committed by John W. Linville
parent 6741e7f048
commit fd09c85fe1
1 changed files with 9 additions and 1 deletions
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10
drivers/net/wireless/ath/ath9k/xmit.c
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@ -1820,6 +1820,7 @@ static struct ath_buf *ath_tx_setup_buffer(struct ath_softc *sc,
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 @@ static struct ath_buf *ath_tx_setup_buffer(struct ath_softc *sc,
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;
}