From: Daniel Jurgens <danielj@mellanox.com>
Date: Thu, 4 Jan 2018 17:25:43 +0200
Subject: IB/mlx5: Don't advertise RAW QP support in dual port mode
Patch-mainline: v4.16-rc1
Git-commit: 85c7c01499a9ebbf049422668e05c58999b5ae45
References: bsc#1103991 FATE#326007

When operating in dual port RoCE mode FW doesn't support steering for
raw QPs on the slave port. They still work on the master port, but
the user has no way of knowing which port is the master. The
capability is reported per device, not per port.

Signed-off-by: Daniel Jurgens <danielj@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/infiniband/hw/mlx5/main.c |   21 ++++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -731,6 +731,7 @@ static int mlx5_ib_query_device(struct i
 	int max_rq_sg;
 	int max_sq_sg;
 	u64 min_page_size = 1ull << MLX5_CAP_GEN(mdev, log_pg_sz);
+	bool raw_support = !mlx5_core_mp_enabled(mdev);
 	struct mlx5_ib_query_device_resp resp = {};
 	size_t resp_len;
 	u64 max_tso;
@@ -794,7 +795,7 @@ static int mlx5_ib_query_device(struct i
 	if (MLX5_CAP_GEN(mdev, block_lb_mc))
 		props->device_cap_flags |= IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
 
-	if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads)) {
+	if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) && raw_support) {
 		if (MLX5_CAP_ETH(mdev, csum_cap)) {
 			/* Legacy bit to support old userspace libraries */
 			props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM;
@@ -843,7 +844,8 @@ static int mlx5_ib_query_device(struct i
 	}
 
 	if (MLX5_CAP_GEN(dev->mdev, rq_delay_drop) &&
-	    MLX5_CAP_GEN(dev->mdev, general_notification_event))
+	    MLX5_CAP_GEN(dev->mdev, general_notification_event) &&
+	    raw_support)
 		props->raw_packet_caps |= IB_RAW_PACKET_CAP_DELAY_DROP;
 
 	if (MLX5_CAP_GEN(mdev, ipoib_enhanced_offloads) &&
@@ -851,7 +853,8 @@ static int mlx5_ib_query_device(struct i
 		props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
 
 	if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) &&
-	    MLX5_CAP_ETH(dev->mdev, scatter_fcs)) {
+	    MLX5_CAP_ETH(dev->mdev, scatter_fcs) &&
+	    raw_support) {
 		/* Legacy bit to support old userspace libraries */
 		props->device_cap_flags |= IB_DEVICE_RAW_SCATTER_FCS;
 		props->raw_packet_caps |= IB_RAW_PACKET_CAP_SCATTER_FCS;
@@ -915,7 +918,7 @@ static int mlx5_ib_query_device(struct i
 		props->device_cap_flags |= IB_DEVICE_VIRTUAL_FUNCTION;
 
 	if (mlx5_ib_port_link_layer(ibdev, 1) ==
-	    IB_LINK_LAYER_ETHERNET) {
+	    IB_LINK_LAYER_ETHERNET && raw_support) {
 		props->rss_caps.max_rwq_indirection_tables =
 			1 << MLX5_CAP_GEN(dev->mdev, log_max_rqt);
 		props->rss_caps.max_rwq_indirection_table_size =
@@ -952,7 +955,8 @@ static int mlx5_ib_query_device(struct i
 		resp.response_length += sizeof(resp.cqe_comp_caps);
 	}
 
-	if (field_avail(typeof(resp), packet_pacing_caps, uhw->outlen)) {
+	if (field_avail(typeof(resp), packet_pacing_caps, uhw->outlen) &&
+	    raw_support) {
 		if (MLX5_CAP_QOS(mdev, packet_pacing) &&
 		    MLX5_CAP_GEN(mdev, qos)) {
 			resp.packet_pacing_caps.qp_rate_limit_max =
@@ -1011,7 +1015,8 @@ static int mlx5_ib_query_device(struct i
 		}
 	}
 
-	if (field_avail(typeof(resp), striding_rq_caps, uhw->outlen)) {
+	if (field_avail(typeof(resp), striding_rq_caps, uhw->outlen) &&
+	    raw_support) {
 		resp.response_length += sizeof(resp.striding_rq_caps);
 		if (MLX5_CAP_GEN(mdev, striding_rq)) {
 			resp.striding_rq_caps.min_single_stride_log_num_of_bytes =
@@ -3683,12 +3688,14 @@ static u32 get_core_cap_flags(struct ib_
 	enum rdma_link_layer ll = mlx5_ib_port_link_layer(ibdev, 1);
 	u8 l3_type_cap = MLX5_CAP_ROCE(dev->mdev, l3_type);
 	u8 roce_version_cap = MLX5_CAP_ROCE(dev->mdev, roce_version);
+	bool raw_support = !mlx5_core_mp_enabled(dev->mdev);
 	u32 ret = 0;
 
 	if (ll == IB_LINK_LAYER_INFINIBAND)
 		return RDMA_CORE_PORT_IBA_IB;
 
-	ret = RDMA_CORE_PORT_RAW_PACKET;
+	if (raw_support)
+		ret = RDMA_CORE_PORT_RAW_PACKET;
 
 	if (!(l3_type_cap & MLX5_ROCE_L3_TYPE_IPV4_CAP))
 		return ret;