Elena Reshetova 17ac99b2b8 drivers, net, mlx4: convert mlx4_srq.refcount from atomic_t to refcount_t ... atomic_t variables are currently used to implement reference counters with the following properties: - counter is initialized to 1 using atomic_set() - a resource is freed upon counter reaching zero - once counter reaches zero, its further increments aren't allowed - counter schema uses basic atomic operations (set, inc, inc_not_zero, dec_and_test, etc.) Such atomic variables should be converted to a newly provided refcount_t type and API that prevents accidental counter overflows and underflows. This is important since overflows and underflows can lead to use-after-free situation and be exploitable. The variable mlx4_srq.refcount is used as pure reference counter. Convert it to refcount_t and fix up the operations. Suggested-by: Kees Cook <keescook@chromium.org> Reviewed-by: David Windsor <dwindsor@gmail.com> Reviewed-by: Hans Liljestrand <ishkamiel@gmail.com> Signed-off-by: Elena Reshetova <elena.reshetova@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-10-22 02:22:38 +01:00
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cmd.h	net/mlx4: Spoofcheck and zero MAC can't coexist	2017-02-23 10:57:56 -05:00
cq.h	net/mlx4_en: Add support for hardware accelerated 802.1ad vlan	2015-07-27 15:00:37 -07:00
device.h	drivers, net, mlx4: convert mlx4_srq.refcount from atomic_t to refcount_t	2017-10-22 02:22:38 +01:00
doorbell.h
driver.h	net/mlx4: && vs & typo	2017-03-01 09:50:58 -08:00
qp.h	net/mlx4: Fix the check in attaching steering rules	2017-06-04 23:10:05 -04:00
srq.h	mlx4_core: Implement SRQ object lookup from srqn	2013-04-16 22:42:55 -07:00