From: Jim Foraker Date: Wed, 2 May 2012 18:57:23 +0000 (-0400) Subject: IB/qib: MADs with misset M_Keys should return failure X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=3236b2d469db;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git IB/qib: MADs with misset M_Keys should return failure If a MAD is sent directly to the local HCA rather than placed on a QP and the MAD fails M_Key checks, there is no means to generate a timeout for the client, which may hang. Instead we report IB_MAD_RESULT_FAILURE, which operates the same for on-the-wire packets, but will generate a send failure back to the client. Reviewed-by: Mike Marciniszyn Signed-off-by: Jim Foraker Signed-off-by: Roland Dreier --- diff --git a/drivers/infiniband/hw/qib/qib_mad.c b/drivers/infiniband/hw/qib/qib_mad.c index ed611e8df64..43390217a02 100644 --- a/drivers/infiniband/hw/qib/qib_mad.c +++ b/drivers/infiniband/hw/qib/qib_mad.c @@ -433,7 +433,7 @@ static int check_mkey(struct qib_ibport *ibp, struct ib_smp *smp, int mad_flags) ibp->mkey_lease_period * HZ; /* Generate a trap notice. */ qib_bad_mkey(ibp, smp); - ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; + ret = 1; } } @@ -464,6 +464,7 @@ static int subn_get_portinfo(struct ib_smp *smp, struct ib_device *ibdev, ibp = to_iport(ibdev, port_num); ret = check_mkey(ibp, smp, 0); if (ret) + ret = IB_MAD_RESULT_FAILURE; goto bail; } } @@ -1848,6 +1849,7 @@ static int process_subn(struct ib_device *ibdev, int mad_flags, port_num && port_num <= ibdev->phys_port_cnt && port != port_num) (void) check_mkey(to_iport(ibdev, port_num), smp, 0); + ret = IB_MAD_RESULT_FAILURE; goto bail; }