linux-kernel - [PATCH rdma-next v1 3/5] RDMA/mana

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Message-Id: <1706698552-25383-4-git-send-email-kotaranov@linux.microsoft.com>
Date: Wed, 31 Jan 2024 02:55:50 -0800
From: Konstantin Taranov <kotaranov@...ux.microsoft.com>
To: kotaranov@...rosoft.com,
	sharmaajay@...rosoft.com,
	longli@...rosoft.com,
	jgg@...pe.ca,
	leon@...nel.org
Cc: linux-rdma@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH rdma-next v1 3/5] RDMA/mana_ib: Implement port parameters

Implement port parameters for RNIC. Only port 1 is RoCEv2 capable.

Signed-off-by: Konstantin Taranov <kotaranov@...ux.microsoft.com>
---
 drivers/infiniband/hw/mana/device.c  |  2 ++
 drivers/infiniband/hw/mana/main.c    | 37 +++++++++++++++++++++++++++++++++++-
 drivers/infiniband/hw/mana/mana_ib.h |  4 ++++
 3 files changed, 42 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/mana/device.c b/drivers/infiniband/hw/mana/device.c
index d8e8b10..11b0410 100644
--- a/drivers/infiniband/hw/mana/device.c
+++ b/drivers/infiniband/hw/mana/device.c
@@ -29,12 +29,14 @@
 	.destroy_rwq_ind_table = mana_ib_destroy_rwq_ind_table,
 	.destroy_wq = mana_ib_destroy_wq,
 	.disassociate_ucontext = mana_ib_disassociate_ucontext,
+	.get_link_layer = mana_ib_get_link_layer,
 	.get_port_immutable = mana_ib_get_port_immutable,
 	.mmap = mana_ib_mmap,
 	.modify_qp = mana_ib_modify_qp,
 	.modify_wq = mana_ib_modify_wq,
 	.query_device = mana_ib_query_device,
 	.query_gid = mana_ib_query_gid,
+	.query_pkey = mana_ib_query_pkey,
 	.query_port = mana_ib_query_port,
 	.reg_user_mr = mana_ib_reg_user_mr,
 
diff --git a/drivers/infiniband/hw/mana/main.c b/drivers/infiniband/hw/mana/main.c
index 33cd69e..3e05a62 100644
--- a/drivers/infiniband/hw/mana/main.c
+++ b/drivers/infiniband/hw/mana/main.c
@@ -492,7 +492,42 @@ int mana_ib_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
 int mana_ib_query_port(struct ib_device *ibdev, u32 port,
 		       struct ib_port_attr *props)
 {
-	/* This version doesn't return port properties */
+	struct net_device *ndev = mana_ib_get_netdev(ibdev, port);
+
+	if (!ndev)
+		return -EINVAL;
+
+	memset(props, 0, sizeof(*props));
+	props->max_mtu = IB_MTU_4096;
+	props->active_mtu = ib_mtu_int_to_enum(ndev->mtu);
+
+	if (netif_carrier_ok(ndev) && netif_running(ndev)) {
+		props->state = IB_PORT_ACTIVE;
+		props->phys_state = IB_PORT_PHYS_STATE_LINK_UP;
+	} else {
+		props->state = IB_PORT_DOWN;
+		props->phys_state = IB_PORT_PHYS_STATE_DISABLED;
+	}
+
+	props->active_width = IB_WIDTH_4X;
+	props->active_speed = IB_SPEED_EDR;
+	props->pkey_tbl_len = 1;
+	if (port == 1)
+		props->gid_tbl_len = 16;
+
+	return 0;
+}
+
+enum rdma_link_layer mana_ib_get_link_layer(struct ib_device *device, u32 port_num)
+{
+	return IB_LINK_LAYER_ETHERNET;
+}
+
+int mana_ib_query_pkey(struct ib_device *ibdev, u32 port, u16 index, u16 *pkey)
+{
+	if (index != 0)
+		return -EINVAL;
+	*pkey = IB_DEFAULT_PKEY_FULL;
 	return 0;
 }
 
diff --git a/drivers/infiniband/hw/mana/mana_ib.h b/drivers/infiniband/hw/mana/mana_ib.h
index 96454cf..196f3c8 100644
--- a/drivers/infiniband/hw/mana/mana_ib.h
+++ b/drivers/infiniband/hw/mana/mana_ib.h
@@ -262,4 +262,8 @@ int mana_ib_query_gid(struct ib_device *ibdev, u32 port, int index,
 void mana_ib_gd_create_rnic_adapter(struct mana_ib_dev *mdev);
 
 void mana_ib_gd_destroy_rnic_adapter(struct mana_ib_dev *mdev);
+
+int mana_ib_query_pkey(struct ib_device *ibdev, u32 port, u16 index, u16 *pkey);
+
+enum rdma_link_layer mana_ib_get_link_layer(struct ib_device *device, u32 port_num);
 #endif
-- 
1.8.3.1