]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
can: isotp: isotp_setsockopt(): block setsockopt on bound sockets
authorOliver Hartkopp <socketcan@hartkopp.net>
Fri, 4 Dec 2020 13:35:07 +0000 (14:35 +0100)
committerJakub Kicinski <kuba@kernel.org>
Wed, 9 Dec 2020 16:44:15 +0000 (08:44 -0800)
commit323a391a220c4a234cb1e678689d7f4c3b73f863
treeae1119b3b9aa3c23f04c86be82de789f687e9626
parent72d05c00d7ecda85df29abd046da7e41cc071c17
can: isotp: isotp_setsockopt(): block setsockopt on bound sockets

The isotp socket can be widely configured in its behaviour regarding addressing
types, fill-ups, receive pattern tests and link layer length. Usually all
these settings need to be fixed before bind() and can not be changed
afterwards.

This patch adds a check to enforce the common usage pattern.

Fixes: e057dd3fc20f ("can: add ISO 15765-2:2016 transport protocol")
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Tested-by: Thomas Wagner <thwa1@web.de>
Link: https://lore.kernel.org/r/20201203140604.25488-2-socketcan@hartkopp.net
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Link: https://lore.kernel.org/r/20201204133508.742120-3-mkl@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
net/can/isotp.c