Miquel Raynal 5a5c4e06fd mac802154: Fix LQI recording ... Back in 2014, the LQI was saved in the skb control buffer (skb->cb, or mac_cb(skb)) without any actual reset of this area prior to its use. As part of a useful rework of the use of this region, 32edc40ae6 ("ieee802154: change _cb handling slightly") introduced mac_cb_init() to basically memset the cb field to 0. In particular, this new function got called at the beginning of mac802154_parse_frame_start(), right before the location where the buffer got actually filled. What went through unnoticed however, is the fact that the very first helper called by device drivers in the receive path already used this area to save the LQI value for later extraction. Resetting the cb field "so late" led to systematically zeroing the LQI. If we consider the reset of the cb field needed, we can make it as soon as we get an skb from a device driver, right before storing the LQI, as is the very first time we need to write something there. Cc: stable@vger.kernel.org Fixes: 32edc40ae6 ("ieee802154: change _cb handling slightly") Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Alexander Aring <aahringo@redhat.com> Link: https://lore.kernel.org/r/20221020142535.1038885-1-miquel.raynal@bootlin.com Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>		2022-10-24 11:07:39 +02:00
..
cfg.c	net: mac802154: Set durations automatically	2022-02-10 15:41:58 +01:00
cfg.h
driver-ops.h
ieee802154_i.h	net: mac802154: Save a global error code on transmissions	2022-04-25 20:51:12 +02:00
iface.c	mac802154: use dev_addr_set() - manual	2021-10-20 14:27:40 +01:00
Kconfig	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
llsec.c	net: mac802154: Fix general protection fault	2021-04-06 22:42:16 +02:00
llsec.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174	2019-05-30 11:26:41 -07:00
mac_cmd.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174	2019-05-30 11:26:41 -07:00
main.c	net: mac802154: Fix symbol durations	2022-04-30 20:29:47 +02:00
Makefile
mib.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174	2019-05-30 11:26:41 -07:00
rx.c	mac802154: Fix LQI recording	2022-10-24 11:07:39 +02:00
trace.c
trace.h
tx.c	mac802154: tx: fix use-after-free	2020-09-08 16:35:32 +02:00
util.c	net: mac802154: Create an error helper for asynchronous offloading errors	2022-04-25 20:51:12 +02:00