No, retry doesn't stop ack's, it just stops the hardware from retrying
a packet if it hasn't heard an ACK.
You can fiddle with the diag register, or you can just ensure that the
relevant bit in the TX descriptor isn't set.
fgrep NOACK ath9k/*.h
mac.h:#define ATH9K_TXDESC_NOACK 0x0002
fgrep NOACK ath5k/*.h
fgrep NOACK *h
desc.h:#define AR5K_2W_TX_DESC_CTL1_NOACK_5211 0x00800000 /* [5211] no
ACK */
desc.h:#define AR5K_4W_TX_DESC_CTL1_NOACK 0x01000000 /* no ACK */
desc.h:#define AR5K_TXDESC_NOACK 0x0002 /*[5211+]*/
There's likely some API you can use at a higher level to signify to
the TX code that no, you don't want an ACK for the packet.
Eg, look at ath9k/setup_tx_flags():
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
...
if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK)
flags |= ATH9K_TXDESC_NOACK;
HTH,
Adrian
On 9 June 2011 13:55, Liang <[email protected]> wrote:
> Hi,
> I want to know if the ACK at 802.11 MAC layer can be turned off in the
> ath5k/ath9k, and how can it be done?
> On the other hand, does the command "iwconfig wlan0 retry 0" disable the MAC
> retransmission? Is it the same to turnoff the ACK?
> Thank you!
> Best,
> Leon
> _______________________________________________
> ath5k-devel mailing list
> [email protected]
> https://lists.ath5k.org/mailman/listinfo/ath5k-devel
>
>
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