dect
/
linux-2.6
Archived
13
0
Fork 0
Code Releases Activity

ath9k: Fix incorrect sequence numbering for unaggregated QoS Frame. 

This patch fixes an issue with the sequence numbers of unaggregated
QoS frames, because of which the frames are handled in a different order
at the AP and resulted in MLME REPLAYFAILURE.

Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Senthil Balasubramanian 2008-12-22 16:31:58 +05:30 committed by John W. Linville
parent f3d340c1d5
commit d3a1db1c67
1 changed files with 17 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
drivers/net/wireless/ath9k/xmit.c
View File

@ -264,25 +264,22 @@ static void assign_aggr_tid_seqno(struct sk_buff *skb,
}
/* Get seqno */
if (ieee80211_is_data(fc) && !is_pae(skb)) {
/* For HT capable stations, we save tidno for later use.
* We also override seqno set by upper layer with the one
* in tx aggregation state.
*
* If fragmentation is on, the sequence number is
* not overridden, since it has been
* incremented by the fragmentation routine.
*
* FIXME: check if the fragmentation threshold exceeds
* IEEE80211 max.
*/
tid = ATH_AN_2_TID(an, bf->bf_tidno);
hdr->seq_ctrl = cpu_to_le16(tid->seq_next <<
IEEE80211_SEQ_SEQ_SHIFT);
bf->bf_seqno = tid->seq_next;
INCR(tid->seq_next, IEEE80211_SEQ_MAX);
}
/* For HT capable stations, we save tidno for later use.
* We also override seqno set by upper layer with the one
* in tx aggregation state.
*
* If fragmentation is on, the sequence number is
* not overridden, since it has been
* incremented by the fragmentation routine.
*
* FIXME: check if the fragmentation threshold exceeds
* IEEE80211 max.
*/
tid = ATH_AN_2_TID(an, bf->bf_tidno);
hdr->seq_ctrl = cpu_to_le16(tid->seq_next <<
IEEE80211_SEQ_SEQ_SHIFT);
bf->bf_seqno = tid->seq_next;
INCR(tid->seq_next, IEEE80211_SEQ_MAX);
}
static int setup_tx_flags(struct ath_softc *sc, struct sk_buff *skb,
@ -1718,11 +1715,10 @@ static int ath_tx_setup_buffer(struct ath_softc *sc, struct ath_buf *bf,
/* Assign seqno, tidno */
if (bf_isht(bf) && (sc->sc_flags & SC_OP_TXAGGR))
if (ieee80211_is_data_qos(fc) && (sc->sc_flags & SC_OP_TXAGGR))
assign_aggr_tid_seqno(skb, bf);
/* DMA setup */
bf->bf_mpdu = skb;
bf->bf_dmacontext = pci_map_single(sc->pdev, skb->data,