From mboxrd@z Thu Jan 1 00:00:00 1970 From: Oleksij Rempel Date: Fri, 10 Jul 2015 12:24:25 +0200 Subject: [ath9k-devel] Handling received ACK frame in ath9k_htc In-Reply-To: References: Message-ID: <559F9D59.9030805@rempel-privat.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ath9k-devel@lists.ath9k.org Am 08.07.2015 um 16:16 schrieb Jeon: > I am trying to timestamp when a ACK frame is received in ath9k_htc module. > WLAN card is TL-WN722N from TP-LINK > > I've modified a function `ath9k_rx_tasklet()` in > `ath/ath9k/htc_drv_txrx.c` like > [this](https://gist.github.com/gsongsong/991705f9c38ce6a9cda7#file-gistfile1-txt-L37) > > When I build and install the modified kernel source, however, that > `printk` message does not appear in the `dmesg` log. > > After some search, I've found [a > thread](https://www.mail-archive.com/ath9k-devel%40lists.ath9k.org/msg12280.html). > It says, ACK is processed by hardware itself and is not passed to > ath9k_htc kernel module. Is it right? Then, isn't there a way to check > whether an ACK frame is received in a ath9k_htc kernel module? You need to digg in to firmware. ath9k_htc HW is mostly Atheros PCI controller connected to a SoC and then to USB. Part of magic which is happening in ath9k is located in ath9k_htc_fw. -- Regards, Oleksij -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 213 bytes Desc: OpenPGP digital signature Url : http://lists.ath9k.org/pipermail/ath9k-devel/attachments/20150710/4cada3b7/attachment.pgp