IB/rxe: Drop QP0 silently
authorZhu Yanjun <yanjun.zhu@oracle.com>
Fri, 13 Jul 2018 07:10:20 +0000 (03:10 -0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 26 Sep 2018 06:38:00 +0000 (08:38 +0200)
commit394df591433deffef83b794bf95bd7ab12d56497
treea66b28e26be167dba7fd182f4b238c08b1061cf4
parent5b253f742006e6edfea85df31c69bf3e29fbf536
IB/rxe: Drop QP0 silently

[ Upstream commit 536ca245c512aedfd84cde072d7b3ca14b6e1792 ]

According to "Annex A16: RDMA over Converged Ethernet (RoCE)":

A16.4.3 MANAGEMENT INTERFACES

As defined in the base specification, a special Queue Pair, QP0 is defined
solely for communication between subnet manager(s) and subnet management
agents. Since such an IB-defined subnet management architecture is outside
the scope of this annex, it follows that there is also no requirement that
a port which conforms to this annex be associated with a QP0. Thus, for
end nodes designed to conform to this annex, the concept of QP0 is
undefined and unused for any port connected to an Ethernet network.

CA16-8: A packet arriving at a RoCE port containing a BTH with the
destination QP field set to QP0 shall be silently dropped.

Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Acked-by: Moni Shoua <monis@mellanox.com>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/infiniband/sw/rxe/rxe_recv.c