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All usages of the vport_ops struct have the .send field set to
dev_queue_xmit or internal_dev_recv. Since most usages are set to
dev_queue_xmit, the function hook should match the signature of
dev_queue_xmit.
The only call to vport_ops->send() is in net/openvswitch/vport.c and it
throws away the return value.
This mismatched return type breaks forward edge kCFI since the underlying
function definition does not match the function hook definition.
Reported-by: Dan Carpenter <error27@gmail.com>
Link: https://github.com/ClangBuiltLinux/linux/issues/1703
Cc: llvm@lists.linux.dev
Signed-off-by: Nathan Huckleberry <nhuck@google.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Acked-by: Eelco Chaudron <echaudro@redhat.com>
Link: https://lore.kernel.org/r/20220913230739.228313-1-nhuck@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
8bb7c4f8c9