adapter->dcb would get silently freed inside qlcnic_dcb_enable() in
case qlcnic_dcb_attach() would return an error, which always happens
under OOM conditions. This would lead to use-after-free because both
of the existing callers invoke qlcnic_dcb_get_info() on the obtained
pointer, which is potentially freed at that point.
Propagate errors from qlcnic_dcb_enable(), and instead free the dcb
pointer at callsite using qlcnic_dcb_free(). This also removes the now
unused qlcnic_clear_dcb_ops() helper, which was a simple wrapper around
kfree() also causing memory leaks for partially initialized dcb.
Found by Linux Verification Center (linuxtesting.org) with the SVACE
static analysis tool.
Fixes: 3c44bba1d2 ("qlcnic: Disable DCB operations from SR-IOV VFs")
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Signed-off-by: Daniil Tatianin <d-tatianin@yandex-team.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
Clang static analysis reports this issue
qlcnic_dcb.c:382:10: warning: Assigned value is
garbage or undefined
mbx_out = *val;
^ ~~~~
val is set in the qlcnic_dcb_query_hw_capability() wrapper.
If there is no query_hw_capability op in dcp, success is
returned without setting the val.
For this and similar wrappers, return -EOPNOTSUPP.
Fixes: 14d385b990 ("qlcnic: dcb: Query adapter DCB capabilities.")
Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
All files in this driver directory contain the following notice:
See LICENSE.qlcnic for copyright and licensing details.
LICENSE.qlacnic can be found in
Documentation/networking/device_drivers/qlogic/. The file contains:
- A copyright notice
This copyright notice is redundant as all files contain the same
copyright notice already
- A license notice
You may modify and redistribute the device driver code under the
GNU General Public License (a copy of which is attached hereto as
Exhibit A) published by the Free Software Foundation (version 2).
This can be replaced with the corresponding SPDX license identifier
(GPL-2.0-only) in the source files which reference this license
file.
- The full GPLv2 license text
A redundant copy of LICENSES/preferred/GPL-2.0
Remove the notices and add the SPDX license identifier GPL-2.0-only to the
source files.
Finally remove the now redundant LICENSE.qlcnic file.
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Acked-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Assigning NULL to parmeter dcb has no effect outside of the
inlined function.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
The qlcnic_dcb_ops structures are never modified, so declare them as const.
Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
o DCB AEN registration was reissuing INIT_NIC command. Instead, club
all options of INIT NIC command and issue this command only once.
Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: Manish Chopra <manish.chopra@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
o These operations will be supported only through PFs (SR-IOV and non-SR-IOV).
Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: Manish Chopra <manish.chopra@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
o Move dcb specific function definitions to dcb files.
o Move dcb specific variables to qlcnic_dcb structure.
Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
o Adapter and driver supports only CEE dcbnl ops. Only GET callbacks
within dcbnl ops are supported currently.
Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
o Adapter sends Asynchronous Event Notifications to the driver when
there are changes in the switch or adapter DCBX configuration.
AEN handler updates the driver DCBX parameters.
Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
o Populate driver data structures with local, operational, and peer
DCB parameters.
Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
o Query adapter DCB capabilities and populate local data structures
with relevant information.
o Add QLCNIC_DCB to Kconfig for enabling/disabling DCB.
Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
