netdev - [net-next 07/15] net/mlx5: Add new page type for EC VF pages

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Message-Id: <20230610014254.343576-8-saeed@kernel.org>
Date: Fri,  9 Jun 2023 18:42:46 -0700
From: Saeed Mahameed <saeed@...nel.org>
To: "David S. Miller" <davem@...emloft.net>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Eric Dumazet <edumazet@...gle.com>
Cc: Saeed Mahameed <saeedm@...dia.com>,
	netdev@...r.kernel.org,
	Tariq Toukan <tariqt@...dia.com>,
	Daniel Jurgens <danielj@...dia.com>,
	William Tu <witu@...dia.com>
Subject: [net-next 07/15] net/mlx5: Add new page type for EC VF pages

From: Daniel Jurgens <danielj@...dia.com>

When the embedded cpu supports SRIOV it can be enabled and disabled
independently from the host SRIOV. Track the pages separately so we can
properly wait for returned VF pages.

Signed-off-by: Daniel Jurgens <danielj@...dia.com>
Reviewed-by: William Tu <witu@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/debugfs.c   |  1 +
 drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c | 11 ++++++++++-
 include/linux/mlx5/driver.h                         |  1 +
 3 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/debugfs.c b/drivers/net/ethernet/mellanox/mlx5/core/debugfs.c
index bb95b40d25eb..fc13b41cc9b2 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/debugfs.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/debugfs.c
@@ -246,6 +246,7 @@ void mlx5_pages_debugfs_init(struct mlx5_core_dev *dev)
 
 	debugfs_create_u32("fw_pages_total", 0400, pages, &dev->priv.fw_pages);
 	debugfs_create_u32("fw_pages_vfs", 0400, pages, &dev->priv.page_counters[MLX5_VF]);
+	debugfs_create_u32("fw_pages_ec_vfs", 0400, pages, &dev->priv.page_counters[MLX5_EC_VF]);
 	debugfs_create_u32("fw_pages_sfs", 0400, pages, &dev->priv.page_counters[MLX5_SF]);
 	debugfs_create_u32("fw_pages_host_pf", 0400, pages, &dev->priv.page_counters[MLX5_HOST_PF]);
 	debugfs_create_u32("fw_pages_alloc_failed", 0400, pages, &dev->priv.fw_pages_alloc_failed);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c b/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c
index 95dc67fb3001..dcf58efac159 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c
@@ -79,7 +79,13 @@ static u16 func_id_to_type(struct mlx5_core_dev *dev, u16 func_id, bool ec_funct
 	if (!func_id)
 		return mlx5_core_is_ecpf(dev) && !ec_function ? MLX5_HOST_PF : MLX5_PF;
 
-	return func_id <= mlx5_core_max_vfs(dev) ?  MLX5_VF : MLX5_SF;
+	if (func_id <= max(mlx5_core_max_vfs(dev), mlx5_core_max_ec_vfs(dev))) {
+		if (ec_function)
+			return MLX5_EC_VF;
+		else
+			return MLX5_VF;
+	}
+	return MLX5_SF;
 }
 
 static u32 mlx5_get_ec_function(u32 function)
@@ -730,6 +736,9 @@ int mlx5_reclaim_startup_pages(struct mlx5_core_dev *dev)
 	WARN(dev->priv.page_counters[MLX5_HOST_PF],
 	     "External host PF FW pages counter is %d after reclaiming all pages\n",
 	     dev->priv.page_counters[MLX5_HOST_PF]);
+	WARN(dev->priv.page_counters[MLX5_EC_VF],
+	     "EC VFs FW pages counter is %d after reclaiming all pages\n",
+	     dev->priv.page_counters[MLX5_EC_VF]);
 
 	return 0;
 }
diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h
index 252b6a6965b8..18a608a1f567 100644
--- a/include/linux/mlx5/driver.h
+++ b/include/linux/mlx5/driver.h
@@ -581,6 +581,7 @@ enum mlx5_func_type {
 	MLX5_VF,
 	MLX5_SF,
 	MLX5_HOST_PF,
+	MLX5_EC_VF,
 	MLX5_FUNC_TYPE_NUM,
 };
 
-- 
2.40.1