From mboxrd@z Thu Jan 1 00:00:00 1970 From: Leon Romanovsky Subject: [PATCH iproute2 rdma: Ignore unknown netlink attributes Date: Tue, 3 Apr 2018 10:28:42 +0300 Message-ID: <20180403072842.32153-1-leon@kernel.org> Return-path: Sender: netdev-owner@vger.kernel.org To: Stephen Hemminger Cc: Leon Romanovsky , netdev , RDMA mailing list , David Ahern , Steve Wise List-Id: linux-rdma@vger.kernel.org From: Leon Romanovsky The check if netlink attributes supplied more than maximum supported is to strict and may lead to backward compatibility issues with old application with a newer kernel that supports new attribute. CC: Steve Wise Fixes: 74bd75c2b68d ("rdma: Add basic infrastructure for RDMA tool") Signed-off-by: Leon Romanovsky --- rdma/utils.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/rdma/utils.c b/rdma/utils.c index a2e08e91..5c1e736a 100644 --- a/rdma/utils.c +++ b/rdma/utils.c @@ -399,7 +399,8 @@ int rd_attr_cb(const struct nlattr *attr, void *data) int type; if (mnl_attr_type_valid(attr, RDMA_NLDEV_ATTR_MAX) < 0) - return MNL_CB_ERROR; + /* We received uknown attribute */ + return MNL_CB_OK; type = mnl_attr_get_type(attr);