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Commit fd09c85f authored by Sujith Manoharan's avatar Sujith Manoharan Committed by John W. Linville
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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: default avatarSujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 6741e7f0

drivers/net/wireless/ath/ath9k/xmit.c

+9 −1
Original line number Diff line number Diff line
@@ -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);



		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;

	}