Hi Adrian, Thank you. May I ask how to set these registers to disable the ACK in the ath5k/ath9k driver?
Best, Leon On Thu, Jun 9, 2011 at 2:32 PM, Adrian Chadd <adr...@freebsd.org> wrote: > 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 <leonc...@gmail.com> 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 > > ath5k-devel@lists.ath5k.org > > https://lists.ath5k.org/mailman/listinfo/ath5k-devel > > > > >
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