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Date: Sat, 26 Sep 2015 13:55:52 -0700 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Shani Michaeli <shanim@...lanox.com>, Noa Osherovich <noaos@...lanox.com>, Or Gerlitz <ogerlitz@...lanox.com>, Doug Ledford <dledford@...hat.com> Subject: [PATCH 4.1 106/159] IB/mlx4: Use correct SL on AH query under RoCE 4.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Noa Osherovich <noaos@...lanox.com> commit 5e99b139f1b68acd65e36515ca347b03856dfb5a upstream. The mlx4 IB driver implementation for ib_query_ah used a wrong offset (28 instead of 29) when link type is Ethernet. Fixed to use the correct one. Fixes: fa417f7b520e ('IB/mlx4: Add support for IBoE') Signed-off-by: Shani Michaeli <shanim@...lanox.com> Signed-off-by: Noa Osherovich <noaos@...lanox.com> Signed-off-by: Or Gerlitz <ogerlitz@...lanox.com> Signed-off-by: Doug Ledford <dledford@...hat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- drivers/infiniband/hw/mlx4/ah.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) --- a/drivers/infiniband/hw/mlx4/ah.c +++ b/drivers/infiniband/hw/mlx4/ah.c @@ -148,9 +148,13 @@ int mlx4_ib_query_ah(struct ib_ah *ibah, enum rdma_link_layer ll; memset(ah_attr, 0, sizeof *ah_attr); - ah_attr->sl = be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 28; ah_attr->port_num = be32_to_cpu(ah->av.ib.port_pd) >> 24; ll = rdma_port_get_link_layer(ibah->device, ah_attr->port_num); + if (ll == IB_LINK_LAYER_ETHERNET) + ah_attr->sl = be32_to_cpu(ah->av.eth.sl_tclass_flowlabel) >> 29; + else + ah_attr->sl = be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 28; + ah_attr->dlid = ll == IB_LINK_LAYER_INFINIBAND ? be16_to_cpu(ah->av.ib.dlid) : 0; if (ah->av.ib.stat_rate) ah_attr->static_rate = ah->av.ib.stat_rate - MLX4_STAT_RATE_OFFSET; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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