[ath5k-devel] disable ACK at MAC layer in ath5k/ath9k
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
Re: [ath5k-devel] disable ACK at MAC layer in ath5k/ath9k
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_NOACK0x0002 fgrep NOACK ath5k/*.h fgrep NOACK *h desc.h:#define AR5K_2W_TX_DESC_CTL1_NOACK_5211 0x0080 /* [5211] no ACK */ desc.h:#define AR5K_4W_TX_DESC_CTL1_NOACK 0x0100 /* no ACK */ desc.h:#define AR5K_TXDESC_NOACK0x0002 /*[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 ___ ath5k-devel mailing list ath5k-devel@lists.ath5k.org https://lists.ath5k.org/mailman/listinfo/ath5k-devel
Re: [ath5k-devel] disable ACK at MAC layer in ath5k/ath9k
Best thing to do is look at the code that disables ACK in the TX descriptor and set that. There's also the DIAG register, as mentioned. For ath9k: reg.h:#define AR_DIAG_SW 0x8048 reg.h:#define AR_DIAG_ACK_DIS 0x0002 Find where AR_DIAG_SW is set in the ath9k code (it's fiddled with in a few places) and call the REG_SET_BIT() appropriately. Do the same for ath5k once you find the right register/field definition. HTH, Adrian On 9 June 2011 15:03, Liang leonc...@gmail.com wrote: 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 0x0080 /* [5211] no ACK */ desc.h:#define AR5K_4W_TX_DESC_CTL1_NOACK 0x0100 /* 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 ___ ath5k-devel mailing list ath5k-devel@lists.ath5k.org https://lists.ath5k.org/mailman/listinfo/ath5k-devel
Re: [ath5k-devel] Connecting BlackBerry to hotspot
On 9 June 2011 20:00, Bob Copeland m...@bobcopeland.com wrote: http://linuxwireless.org/en/users/Documentation/Bluetooth-coexistence From that page: Apart from AFS and channel skipping techniques Bluetooth coexistence is typically tested with bundled 802.11 and Bluetooth devices. This becomes more evident with 2-wire and 3-wire which relies on GPIO pins for signaling. In other words, the devices have to be in the same system so that the 802.11 device can tell the BT device to stop transmitting by asserting some signals on the shared lines. This is how I understand ath9k's bt coex to work, at least. Right, and the original poster: Today after installing compat-wireless modules with still no luck as a last resort i decided to turn of BT and take out BT dongles from hotspot's USB HUB. Guess even if AR5212 did have bluetooth coexistence support, there's no IO lines coming from the bluetooth device which are twiddling the btcoex GPIOs. Damn. :-) Adrian ___ ath5k-devel mailing list ath5k-devel@lists.ath5k.org https://lists.ath5k.org/mailman/listinfo/ath5k-devel
Re: [ath5k-devel] disable ACK at MAC layer in ath5k/ath9k
Hi, There are three functions where AR_DIAG_SW is set with REG_SET_BIT(), but I'm not sure in which function I should add REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_ACK_DIS). Do you have any suggestions? function1: ath9k_hw_abort_tx_dma() REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_FORCE_CH_IDLE_HIGH); function2: ath9k_hw_setrxabort() REG_SET_BIT(ah, AR_DIAG_SW, (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT)); function3: ath9k_hw_abortpcurecv() REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_ABORT | AR_DIAG_RX_DIS); Thank you. Best, Liang On Thu, Jun 9, 2011 at 4:07 PM, Adrian Chadd adr...@freebsd.org wrote: Best thing to do is look at the code that disables ACK in the TX descriptor and set that. There's also the DIAG register, as mentioned. For ath9k: reg.h:#define AR_DIAG_SW 0x8048 reg.h:#define AR_DIAG_ACK_DIS 0x0002 Find where AR_DIAG_SW is set in the ath9k code (it's fiddled with in a few places) and call the REG_SET_BIT() appropriately. Do the same for ath5k once you find the right register/field definition. HTH, Adrian On 9 June 2011 15:03, Liang leonc...@gmail.com wrote: 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_NOACK0x0002 fgrep NOACK ath5k/*.h fgrep NOACK *h desc.h:#define AR5K_2W_TX_DESC_CTL1_NOACK_5211 0x0080 /* [5211] no ACK */ desc.h:#define AR5K_4W_TX_DESC_CTL1_NOACK 0x0100 /* no ACK */ desc.h:#define AR5K_TXDESC_NOACK0x0002 /*[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 ___ ath5k-devel mailing list ath5k-devel@lists.ath5k.org https://lists.ath5k.org/mailman/listinfo/ath5k-devel
Re: [ath5k-devel] disable ACK at MAC layer in ath5k/ath9k
I'd likely slide it in somewhere after ath9k_hw_process_ini() in ath9k_hw_reset(). Good luck! Adrian On 9 June 2011 21:54, Liang leonc...@gmail.com wrote: Hi, There are three functions where AR_DIAG_SW is set with REG_SET_BIT(), but I'm not sure in which function I should add REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_ACK_DIS). Do you have any suggestions? function1: ath9k_hw_abort_tx_dma() REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_FORCE_CH_IDLE_HIGH); function2: ath9k_hw_setrxabort() REG_SET_BIT(ah, AR_DIAG_SW, (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT)); function3: ath9k_hw_abortpcurecv() REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_ABORT | AR_DIAG_RX_DIS); Thank you. Best, Liang On Thu, Jun 9, 2011 at 4:07 PM, Adrian Chadd adr...@freebsd.org wrote: Best thing to do is look at the code that disables ACK in the TX descriptor and set that. There's also the DIAG register, as mentioned. For ath9k: reg.h:#define AR_DIAG_SW 0x8048 reg.h:#define AR_DIAG_ACK_DIS 0x0002 Find where AR_DIAG_SW is set in the ath9k code (it's fiddled with in a few places) and call the REG_SET_BIT() appropriately. Do the same for ath5k once you find the right register/field definition. HTH, Adrian On 9 June 2011 15:03, Liang leonc...@gmail.com wrote: 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 0x0080 /* [5211] no ACK */ desc.h:#define AR5K_4W_TX_DESC_CTL1_NOACK 0x0100 /* 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 ___ ath5k-devel mailing list ath5k-devel@lists.ath5k.org https://lists.ath5k.org/mailman/listinfo/ath5k-devel
Re: [ath5k-devel] Connecting BlackBerry to hotspot
On Thu, Jun 09, 2011 at 08:17:59PM +0800, Adrian Chadd wrote: Right, and the original poster: Today after installing compat-wireless modules with still no luck as a last resort i decided to turn of BT and take out BT dongles from hotspot's USB HUB. Oh, yeah, I did miss that completely, heh. I kept thinking the only BT was on the phone since the other phones didn't have issues. -- Bob Copeland %% www.bobcopeland.com ___ ath5k-devel mailing list ath5k-devel@lists.ath5k.org https://lists.ath5k.org/mailman/listinfo/ath5k-devel
