[PATCH net-next 0/3] mlx5 cleanups 2025-03-19

[PATCH net-next 0/3] mlx5 cleanups 2025-03-19

[Tariq Toukan]

Hi,

This series contains small cleanups to the mlx5 core and Eth drivers.

Regards,
Tariq


Gal Pressman (1):
  net/mlx5: Remove NULL check before dev_{put, hold}

Mark Zhang (1):
  net/mlx5e: Use right API to free bitmap memory

Tariq Toukan (1):
  net/mlx5e: Always select CONFIG_PAGE_POOL_STATS

 drivers/net/ethernet/mellanox/mlx5/core/Kconfig    |  1 +
 .../net/ethernet/mellanox/mlx5/core/en/tc_tun.c    |  9 +++------
 .../ethernet/mellanox/mlx5/core/en/tc_tun_encap.c  |  9 +++------
 drivers/net/ethernet/mellanox/mlx5/core/en_main.c  |  4 ++--
 drivers/net/ethernet/mellanox/mlx5/core/en_stats.c | 14 --------------
 drivers/net/ethernet/mellanox/mlx5/core/en_stats.h |  4 ----
 drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c  |  3 +--
 7 files changed, 10 insertions(+), 34 deletions(-)


base-commit: 8904eeb9de86e940cb635a42453855790d53b838
-- 
2.31.1

[PATCH net-next 1/3] net/mlx5: Remove NULL check before dev_{put, hold}

[Tariq Toukan]

From: Gal Pressman <gal@nvidia.com>

Fix coccinelle warnings:
WARNING: NULL check before dev_{put, hold} functions is not needed.

Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Jianbo Liu <jianbol@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c      | 9 +++------
 .../net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c    | 9 +++------
 drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c        | 3 +--
 3 files changed, 7 insertions(+), 14 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c
index 721f35e59757..2162d776fe35 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c
@@ -31,8 +31,7 @@ static void mlx5e_tc_tun_route_attr_cleanup(struct mlx5e_tc_tun_route_attr *attr
 {
 	if (attr->n)
 		neigh_release(attr->n);
-	if (attr->route_dev)
-		dev_put(attr->route_dev);
+	dev_put(attr->route_dev);
 }
 
 struct mlx5e_tc_tunnel *mlx5e_get_tc_tun(struct net_device *tunnel_dev)
@@ -68,16 +67,14 @@ static int get_route_and_out_devs(struct mlx5e_priv *priv,
 	 * while holding rcu read lock. Take the net_device for correctness
 	 * sake.
 	 */
-	if (uplink_upper)
-		dev_hold(uplink_upper);
+	dev_hold(uplink_upper);
 	rcu_read_unlock();
 
 	dst_is_lag_dev = (uplink_upper &&
 			  netif_is_lag_master(uplink_upper) &&
 			  real_dev == uplink_upper &&
 			  mlx5_lag_is_sriov(priv->mdev));
-	if (uplink_upper)
-		dev_put(uplink_upper);
+	dev_put(uplink_upper);
 
 	/* if the egress device isn't on the same HW e-switch or
 	 * it's a LAG device, use the uplink
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c
index e7e01f3298ef..a0fc76a1bc08 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c
@@ -42,8 +42,7 @@ static int mlx5e_set_int_port_tunnel(struct mlx5e_priv *priv,
 						&attr->action, out_index);
 
 out:
-	if (route_dev)
-		dev_put(route_dev);
+	dev_put(route_dev);
 
 	return err;
 }
@@ -753,8 +752,7 @@ static int mlx5e_set_vf_tunnel(struct mlx5_eswitch *esw,
 	}
 
 out:
-	if (route_dev)
-		dev_put(route_dev);
+	dev_put(route_dev);
 	return err;
 }
 
@@ -788,8 +786,7 @@ static int mlx5e_update_vf_tunnel(struct mlx5_eswitch *esw,
 	mlx5e_tc_match_to_reg_mod_hdr_change(esw->dev, mod_hdr_acts, VPORT_TO_REG, act_id, data);
 
 out:
-	if (route_dev)
-		dev_put(route_dev);
+	dev_put(route_dev);
 	return err;
 }
 
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c
index ed2ba272946b..ba41dd149f53 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c
@@ -523,8 +523,7 @@ static struct net_device *mlx5_lag_active_backup_get_netdev(struct mlx5_core_dev
 		ndev = ldev->pf[last_idx].netdev;
 	}
 
-	if (ndev)
-		dev_hold(ndev);
+	dev_hold(ndev);
 
 unlock:
 	spin_unlock_irqrestore(&lag_lock, flags);
-- 
2.31.1

[PATCH net-next 2/3] net/mlx5e: Use right API to free bitmap memory

[Tariq Toukan]

From: Mark Zhang <markzhang@nvidia.com>

Use bitmap_free() to free memory allocated with bitmap_zalloc_node().
This fixes memtrack error:
  mtl rsc inconsistency: memtrack_free: .../drivers/net/ethernet/mellanox/mlx5/core/en_main.c::466: kfree for unknown address=0xFFFF0000CA3619E8, device=0x0

Signed-off-by: Mark Zhang <markzhang@nvidia.com>
Reviewed-by: Maher Sanalla <msanalla@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 2edc61328749..3506024c2453 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -359,7 +359,7 @@ static int mlx5e_rq_shampo_hd_info_alloc(struct mlx5e_rq *rq, int node)
 	return 0;
 
 err_nomem:
-	kvfree(shampo->bitmap);
+	bitmap_free(shampo->bitmap);
 	kvfree(shampo->pages);
 
 	return -ENOMEM;
@@ -367,7 +367,7 @@ static int mlx5e_rq_shampo_hd_info_alloc(struct mlx5e_rq *rq, int node)
 
 static void mlx5e_rq_shampo_hd_info_free(struct mlx5e_rq *rq)
 {
-	kvfree(rq->mpwqe.shampo->bitmap);
+	bitmap_free(rq->mpwqe.shampo->bitmap);
 	kvfree(rq->mpwqe.shampo->pages);
 }
 
-- 
2.31.1

[PATCH net-next 3/3] net/mlx5e: Always select CONFIG_PAGE_POOL_STATS

[Tariq Toukan]

Always set PAGE_POOL_STATS in mlx5 Eth driver.
Cleanup the corresponding #ifdefs.

Page pool stats are essential to monitor and analyze RX performance.

Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/Kconfig    |  1 +
 drivers/net/ethernet/mellanox/mlx5/core/en_stats.c | 14 --------------
 drivers/net/ethernet/mellanox/mlx5/core/en_stats.h |  4 ----
 3 files changed, 1 insertion(+), 18 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/Kconfig b/drivers/net/ethernet/mellanox/mlx5/core/Kconfig
index bf4015a12b41..6ec7d6e0181d 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/Kconfig
+++ b/drivers/net/ethernet/mellanox/mlx5/core/Kconfig
@@ -31,6 +31,7 @@ config MLX5_CORE_EN
 	bool "Mellanox 5th generation network adapters (ConnectX series) Ethernet support"
 	depends on NETDEVICES && ETHERNET && INET && PCI && MLX5_CORE
 	select PAGE_POOL
+	select PAGE_POOL_STATS
 	select DIMLIB
 	help
 	  Ethernet support in Mellanox Technologies ConnectX-4 NIC.
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c
index 611ec4b6f370..386f231e642e 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c
@@ -37,9 +37,7 @@
 #include "en/ptp.h"
 #include "en/port.h"
 
-#ifdef CONFIG_PAGE_POOL_STATS
 #include <net/page_pool/helpers.h>
-#endif
 
 void mlx5e_ethtool_put_stat(u64 **data, u64 val)
 {
@@ -196,7 +194,6 @@ static const struct counter_desc sw_stats_desc[] = {
 	{ MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_arfs_err) },
 #endif
 	{ MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_recover) },
-#ifdef CONFIG_PAGE_POOL_STATS
 	{ MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_pp_alloc_fast) },
 	{ MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_pp_alloc_slow) },
 	{ MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_pp_alloc_slow_high_order) },
@@ -208,7 +205,6 @@ static const struct counter_desc sw_stats_desc[] = {
 	{ MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_pp_recycle_ring) },
 	{ MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_pp_recycle_ring_full) },
 	{ MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_pp_recycle_released_ref) },
-#endif
 #ifdef CONFIG_MLX5_EN_TLS
 	{ MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_tls_decrypted_packets) },
 	{ MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_tls_decrypted_bytes) },
@@ -377,7 +373,6 @@ static void mlx5e_stats_grp_sw_update_stats_rq_stats(struct mlx5e_sw_stats *s,
 	s->rx_arfs_err                += rq_stats->arfs_err;
 #endif
 	s->rx_recover                 += rq_stats->recover;
-#ifdef CONFIG_PAGE_POOL_STATS
 	s->rx_pp_alloc_fast          += rq_stats->pp_alloc_fast;
 	s->rx_pp_alloc_slow          += rq_stats->pp_alloc_slow;
 	s->rx_pp_alloc_empty         += rq_stats->pp_alloc_empty;
@@ -389,7 +384,6 @@ static void mlx5e_stats_grp_sw_update_stats_rq_stats(struct mlx5e_sw_stats *s,
 	s->rx_pp_recycle_ring			+= rq_stats->pp_recycle_ring;
 	s->rx_pp_recycle_ring_full		+= rq_stats->pp_recycle_ring_full;
 	s->rx_pp_recycle_released_ref		+= rq_stats->pp_recycle_released_ref;
-#endif
 #ifdef CONFIG_MLX5_EN_TLS
 	s->rx_tls_decrypted_packets   += rq_stats->tls_decrypted_packets;
 	s->rx_tls_decrypted_bytes     += rq_stats->tls_decrypted_bytes;
@@ -496,7 +490,6 @@ static void mlx5e_stats_grp_sw_update_stats_qos(struct mlx5e_priv *priv,
 	}
 }
 
-#ifdef CONFIG_PAGE_POOL_STATS
 static void mlx5e_stats_update_stats_rq_page_pool(struct mlx5e_channel *c)
 {
 	struct mlx5e_rq_stats *rq_stats = c->rq.stats;
@@ -519,11 +512,6 @@ static void mlx5e_stats_update_stats_rq_page_pool(struct mlx5e_channel *c)
 	rq_stats->pp_recycle_ring_full = stats.recycle_stats.ring_full;
 	rq_stats->pp_recycle_released_ref = stats.recycle_stats.released_refcnt;
 }
-#else
-static void mlx5e_stats_update_stats_rq_page_pool(struct mlx5e_channel *c)
-{
-}
-#endif
 
 static MLX5E_DECLARE_STATS_GRP_OP_UPDATE_STATS(sw)
 {
@@ -2086,7 +2074,6 @@ static const struct counter_desc rq_stats_desc[] = {
 	{ MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, arfs_err) },
 #endif
 	{ MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, recover) },
-#ifdef CONFIG_PAGE_POOL_STATS
 	{ MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, pp_alloc_fast) },
 	{ MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, pp_alloc_slow) },
 	{ MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, pp_alloc_slow_high_order) },
@@ -2098,7 +2085,6 @@ static const struct counter_desc rq_stats_desc[] = {
 	{ MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, pp_recycle_ring) },
 	{ MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, pp_recycle_ring_full) },
 	{ MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, pp_recycle_released_ref) },
-#endif
 #ifdef CONFIG_MLX5_EN_TLS
 	{ MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, tls_decrypted_packets) },
 	{ MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, tls_decrypted_bytes) },
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h
index 5961c569cfe0..8e3344e8eadb 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h
@@ -215,7 +215,6 @@ struct mlx5e_sw_stats {
 	u64 ch_aff_change;
 	u64 ch_force_irq;
 	u64 ch_eq_rearm;
-#ifdef CONFIG_PAGE_POOL_STATS
 	u64 rx_pp_alloc_fast;
 	u64 rx_pp_alloc_slow;
 	u64 rx_pp_alloc_slow_high_order;
@@ -227,7 +226,6 @@ struct mlx5e_sw_stats {
 	u64 rx_pp_recycle_ring;
 	u64 rx_pp_recycle_ring_full;
 	u64 rx_pp_recycle_released_ref;
-#endif
 #ifdef CONFIG_MLX5_EN_TLS
 	u64 tx_tls_encrypted_packets;
 	u64 tx_tls_encrypted_bytes;
@@ -381,7 +379,6 @@ struct mlx5e_rq_stats {
 	u64 arfs_err;
 #endif
 	u64 recover;
-#ifdef CONFIG_PAGE_POOL_STATS
 	u64 pp_alloc_fast;
 	u64 pp_alloc_slow;
 	u64 pp_alloc_slow_high_order;
@@ -393,7 +390,6 @@ struct mlx5e_rq_stats {
 	u64 pp_recycle_ring;
 	u64 pp_recycle_ring_full;
 	u64 pp_recycle_released_ref;
-#endif
 #ifdef CONFIG_MLX5_EN_TLS
 	u64 tls_decrypted_packets;
 	u64 tls_decrypted_bytes;
-- 
2.31.1

Re: [PATCH net-next 2/3] net/mlx5e: Use right API to free bitmap memory

[Kalesh Anakkur Purayil]

[-- Attachment #1: Type: text/plain, Size: 647 bytes --]

On Thu, Mar 20, 2025 at 12:56 AM Tariq Toukan <tariqt@nvidia.com> wrote:
>
> From: Mark Zhang <markzhang@nvidia.com>
>
> Use bitmap_free() to free memory allocated with bitmap_zalloc_node().
> This fixes memtrack error:
>   mtl rsc inconsistency: memtrack_free: .../drivers/net/ethernet/mellanox/mlx5/core/en_main.c::466: kfree for unknown address=0xFFFF0000CA3619E8, device=0x0
>
> Signed-off-by: Mark Zhang <markzhang@nvidia.com>
> Reviewed-by: Maher Sanalla <msanalla@nvidia.com>
> Signed-off-by: Tariq Toukan <tariqt@nvidia.com>

LGTM,
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>


-- 
Regards,
Kalesh AP

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Re: [PATCH net-next 1/3] net/mlx5: Remove NULL check before dev_{put, hold}

[Kalesh Anakkur Purayil]

[-- Attachment #1: Type: text/plain, Size: 471 bytes --]

On Thu, Mar 20, 2025 at 12:57 AM Tariq Toukan <tariqt@nvidia.com> wrote:
>
> From: Gal Pressman <gal@nvidia.com>
>
> Fix coccinelle warnings:
> WARNING: NULL check before dev_{put, hold} functions is not needed.
>
> Signed-off-by: Gal Pressman <gal@nvidia.com>
> Reviewed-by: Jianbo Liu <jianbol@nvidia.com>
> Signed-off-by: Tariq Toukan <tariqt@nvidia.com>

LGTM,
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>


-- 
Regards,
Kalesh AP

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Re: [PATCH net-next 0/3] mlx5 cleanups 2025-03-19

[patchwork-bot+netdevbpf]

Hello:

This series was applied to netdev/net-next.git (main)
by Jakub Kicinski <kuba@kernel.org>:

On Wed, 19 Mar 2025 21:23:16 +0200 you wrote:
> Hi,
> 
> This series contains small cleanups to the mlx5 core and Eth drivers.
> 
> Regards,
> Tariq
> 
> [...]

Here is the summary with links:
  - [net-next,1/3] net/mlx5: Remove NULL check before dev_{put, hold}
    https://git.kernel.org/netdev/net-next/c/42cd8dee3a1b
  - [net-next,2/3] net/mlx5e: Use right API to free bitmap memory
    https://git.kernel.org/netdev/net-next/c/cac48eb6d383
  - [net-next,3/3] net/mlx5e: Always select CONFIG_PAGE_POOL_STATS
    https://git.kernel.org/netdev/net-next/c/cba38d1235ff

You are awesome, thank you!
-- 
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