From: 李刚 <gang.li@watchdata.com>
To: "'Mohammed Shafi'" <shafi.wireless@gmail.com>
Cc: "'wireless'" <linux-wireless@vger.kernel.org>
Subject: RE: Question about IEEE80211_TX_CTL_NO_ACK in ath_9k
Date: Mon, 19 Dec 2011 21:03:37 +0800 [thread overview]
Message-ID: <20111219125407.0CE5320069@mail.watchdata.com.cn> (raw)
In-Reply-To: <CAD2nsn1UO5Lz0h4DQiYr0n=W9TAyXeGYuPbvuNt9JKeGhBjB8g@mail.gmail.com>
> > Hi everybody!
> >
> > My wireless card is AR9280. I set the IEEE80211_TX_CTL_NO_ACK flag
before
> > send a packet, but found it no use. It still wait for an ACK. Then I
read
> > the code,
>
> may be any of the following hacks may work ?
Sorry, I didn't make it clear! My 9280 is an USB card, and the send
function is ath9k_htc_tx_data, there is no corresponding flag.
>
> @@ -1039,6 +1039,9 @@ static void ath_tx_fill_desc(struct ath_softc
> *sc, struct ath_buf *bf,
> info.qcu = txq->axq_qnum;
>
> info.flags = ATH9K_TXDESC_INTREQ;
> +
> + info.flags |= ATH9K_TXDESC_NOACK;
> +
> if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK)
> info.flags |= ATH9K_TXDESC_NOACK;
> if (tx_info->flags & IEEE80211_TX_CTL_LDPC)
>
> (or)
>
> diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
> index edcd1c7..0454dee 100644
> --- a/net/mac80211/tx.c
> +++ b/net/mac80211/tx.c
> @@ -1185,6 +1185,8 @@ ieee80211_tx_prepare(struct ieee80211_sub_if_data
> *sdata,
> } else
> tx->flags |= IEEE80211_TX_UNICAST;
>
> + info->flags |= IEEE80211_TX_CTL_NO_ACK;
> +
> if (!(info->flags & IEEE80211_TX_CTL_DONTFRAG)) {
> if (!(tx->flags & IEEE80211_TX_UNICAST) ||
> skb->len + FCS_LEN <= local->hw.wiphy->frag_threshold
||
>
>
>
> --
> shafi
> --
> To unsubscribe from this list: send the line "unsubscribe linux-wireless"
in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2011-12-19 13:04 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-17 23:18 Question about TCP Checksum errors Larry Finger
2011-12-17 23:43 ` Eric Dumazet
2011-12-19 11:38 ` Question about IEEE80211_TX_CTL_NO_ACK in ath_9k 李刚
2011-12-19 12:33 ` Mohammed Shafi
2011-12-19 13:03 ` 李刚 [this message]
2011-12-19 12:33 ` Daniel Smith
2011-12-19 13:00 ` 李刚
2011-12-19 13:43 ` Daniel Smith
2011-12-30 8:15 ` Question: ieee80211_rx called twice after one ieee80211_subif_start_xmit call 李刚
2011-12-30 9:30 ` Adrian Chadd
2012-01-07 2:11 ` Question about duration of data frame in ath9k_htc 李刚
2012-01-07 5:31 ` Sujith Manoharan
2011-12-19 13:07 ` Question about IEEE80211_TX_CTL_NO_ACK in ath_9k Helmut Schaa
2011-12-19 14:42 ` Sujith
2011-12-20 5:39 ` 李刚
2011-12-20 15:24 ` Sujith
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