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ath9k: Assign seq# when mac80211 requests this 

Use TX control flag IEEE80211_TX_CTL_ASSIGN_SEQ as a request to update
the seq# for the frames. This will likely require some further cleanup
to get seq# correctly for Beacons vs. other frames and also potentially
for multiple BSSes. Anyway, this is better than ending up sending out
most frames with seq# 0.

Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Jouni Malinen 2008-08-11 14:01:50 +03:00 committed by John W. Linville
parent 580f0b8a6d
commit 147583c057
3 changed files with 27 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/net/wireless/ath9k/beacon.c
View File

@ -209,6 +209,7 @@ static struct ath_buf *ath_beacon_generate(struct ath_softc *sc, int if_id)
int is_beacon_dtim = 0;
struct ath_txq *cabq;
struct ath_txq *mcastq;
struct ieee80211_tx_info *info;
avp = sc->sc_vaps[if_id];
mcastq = &avp->av_mcastq;
@ -233,6 +234,17 @@ static struct ath_buf *ath_beacon_generate(struct ath_softc *sc, int if_id)
bf->bf_mpdu = skb;
if (skb == NULL)
return NULL;
info = IEEE80211_SKB_CB(skb);
if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
/*
* TODO: make sure the seq# gets assigned properly (vs. other
* TX frames)
*/
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
sc->seq_no += 0x10;
hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
hdr->seq_ctrl |= cpu_to_le16(sc->seq_no);
}
bf->bf_buf_addr = bf->bf_dmacontext =
pci_map_single(sc->pdev, skb->data,
skb_end_pointer(skb) - skb->head,

1
drivers/net/wireless/ath9k/core.h
View File

@ -965,6 +965,7 @@ struct ath_softc {
u32 sc_txqsetup;
u32 sc_txintrperiod; /* tx interrupt batching */
int sc_haltype2q[ATH9K_WME_AC_VO+1]; /* HAL WME AC -> h/w qnum */
u16 seq_no; /* TX sequence number */
/* Beacon */
struct ath9k_tx_queue_info sc_beacon_qi;

14
drivers/net/wireless/ath9k/main.c
View File

@ -368,6 +368,20 @@ static int ath9k_tx(struct ieee80211_hw *hw,
{
struct ath_softc *sc = hw->priv;
int hdrlen, padsize;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
/*
* As a temporary workaround, assign seq# here; this will likely need
* to be cleaned up to work better with Beacon transmission and virtual
* BSSes.
*/
if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
sc->seq_no += 0x10;
hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
hdr->seq_ctrl |= cpu_to_le16(sc->seq_no);
}
/* Add the padding after the header if this is not already done */
hdrlen = ieee80211_get_hdrlen_from_skb(skb);