Magnus Karlsson 9aea648830 xsk: add missing smp_rmb() in xsk_mmap ... [ Upstream commit e6762c8bcf ] All the setup code in AF_XDP is protected by a mutex with the exception of the mmap code that cannot use it. To make sure that a process banging on the mmap call at the same time as another process is setting up the socket, smp_wmb() calls were added in the umem registration code and the queue creation code, so that the published structures that xsk_mmap needs would be consistent. However, the corresponding smp_rmb() calls were not added to the xsk_mmap code. This patch adds these calls. Fixes: 37b076933a ("xsk: add missing write- and data-dependency barrier") Fixes: c0c77d8fb7 ("xsk: add user memory registration support sockopt") Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-01-27 14:50:21 +01:00
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Kconfig
Makefile
xdp_umem.c	xsk: proper AF_XDP socket teardown ordering	2019-11-24 08:20:32 +01:00
xdp_umem.h
xdp_umem_props.h
xsk.c	xsk: add missing smp_rmb() in xsk_mmap	2020-01-27 14:50:21 +01:00
xsk_queue.c
xsk_queue.h	xsk: Properly terminate assignment in xskq_produce_flush_desc	2019-07-26 09:14:12 +02:00