linux-kernel - [RFC net-next] mlx4: Remove unused functions

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Message-ID: <20250130013927.266260-1-linux@treblig.org>
Date: Thu, 30 Jan 2025 01:39:27 +0000
From: linux@...blig.org
To: tariqt@...dia.com,
	andrew+netdev@...n.ch,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	yishaih@...dia.com
Cc: netdev@...r.kernel.org,
	linux-rdma@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	"Dr. David Alan Gilbert" <linux@...blig.org>
Subject: [RFC net-next] mlx4: Remove unused functions

From: "Dr. David Alan Gilbert" <linux@...blig.org>

The last use of mlx4_find_cached_mac() was removed in 2014 by
commit 2f5bb473681b ("mlx4: Add ref counting to port MAC table for RoCE")

mlx4_zone_free_entries() was added in 2014 by
commit 7a89399ffad7 ("net/mlx4: Add mlx4_bitmap zone allocator")
but hasn't been used. (The _unique version is used)

Remove them.

Signed-off-by: Dr. David Alan Gilbert <linux@...blig.org>
---
 drivers/net/ethernet/mellanox/mlx4/alloc.c | 22 ----------------------
 drivers/net/ethernet/mellanox/mlx4/mlx4.h  |  6 ------
 drivers/net/ethernet/mellanox/mlx4/port.c  | 20 --------------------
 include/linux/mlx4/device.h                |  1 -
 4 files changed, 49 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx4/alloc.c b/drivers/net/ethernet/mellanox/mlx4/alloc.c
index b330020dc0d6..598df63518c5 100644
--- a/drivers/net/ethernet/mellanox/mlx4/alloc.c
+++ b/drivers/net/ethernet/mellanox/mlx4/alloc.c
@@ -526,28 +526,6 @@ u32 mlx4_zone_alloc_entries(struct mlx4_zone_allocator *zones, u32 uid, int coun
 	return res;
 }
 
-u32 mlx4_zone_free_entries(struct mlx4_zone_allocator *zones, u32 uid, u32 obj, u32 count)
-{
-	struct mlx4_zone_entry *zone;
-	int res = 0;
-
-	spin_lock(&zones->lock);
-
-	zone = __mlx4_find_zone_by_uid(zones, uid);
-
-	if (NULL == zone) {
-		res = -1;
-		goto out;
-	}
-
-	__mlx4_free_from_zone(zone, obj, count);
-
-out:
-	spin_unlock(&zones->lock);
-
-	return res;
-}
-
 u32 mlx4_zone_free_entries_unique(struct mlx4_zone_allocator *zones, u32 obj, u32 count)
 {
 	struct mlx4_zone_entry *zone;
diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4.h b/drivers/net/ethernet/mellanox/mlx4/mlx4.h
index d7d856d1758a..b213094ea30f 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mlx4.h
+++ b/drivers/net/ethernet/mellanox/mlx4/mlx4.h
@@ -1478,12 +1478,6 @@ void mlx4_zone_allocator_destroy(struct mlx4_zone_allocator *zone_alloc);
 u32 mlx4_zone_alloc_entries(struct mlx4_zone_allocator *zones, u32 uid, int count,
 			    int align, u32 skip_mask, u32 *puid);
 
-/* Free <count> objects, start from <obj> of the uid <uid> from zone_allocator
- * <zones>.
- */
-u32 mlx4_zone_free_entries(struct mlx4_zone_allocator *zones,
-			   u32 uid, u32 obj, u32 count);
-
 /* If <zones> was allocated with MLX4_ZONE_ALLOC_FLAGS_NO_OVERLAP, instead of
  * specifying the uid when freeing an object, zone allocator could figure it by
  * itself. Other parameters are similar to mlx4_zone_free.
diff --git a/drivers/net/ethernet/mellanox/mlx4/port.c b/drivers/net/ethernet/mellanox/mlx4/port.c
index 4e43f4a7d246..e3d0b13c1610 100644
--- a/drivers/net/ethernet/mellanox/mlx4/port.c
+++ b/drivers/net/ethernet/mellanox/mlx4/port.c
@@ -147,26 +147,6 @@ static int mlx4_set_port_mac_table(struct mlx4_dev *dev, u8 port,
 	return err;
 }
 
-int mlx4_find_cached_mac(struct mlx4_dev *dev, u8 port, u64 mac, int *idx)
-{
-	struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
-	struct mlx4_mac_table *table = &info->mac_table;
-	int i;
-
-	for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
-		if (!table->refs[i])
-			continue;
-
-		if (mac == (MLX4_MAC_MASK & be64_to_cpu(table->entries[i]))) {
-			*idx = i;
-			return 0;
-		}
-	}
-
-	return -ENOENT;
-}
-EXPORT_SYMBOL_GPL(mlx4_find_cached_mac);
-
 static bool mlx4_need_mf_bond(struct mlx4_dev *dev)
 {
 	int i, num_eth_ports = 0;
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index 27f42f713c89..87edb7a8173b 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -1415,7 +1415,6 @@ int mlx4_get_is_vlan_offload_disabled(struct mlx4_dev *dev, u8 port,
 				      bool *vlan_offload_disabled);
 void mlx4_handle_eth_header_mcast_prio(struct mlx4_net_trans_rule_hw_ctrl *ctrl,
 				       struct _rule_hw *eth_header);
-int mlx4_find_cached_mac(struct mlx4_dev *dev, u8 port, u64 mac, int *idx);
 int mlx4_find_cached_vlan(struct mlx4_dev *dev, u8 port, u16 vid, int *idx);
 int mlx4_register_vlan(struct mlx4_dev *dev, u8 port, u16 vlan, int *index);
 void mlx4_unregister_vlan(struct mlx4_dev *dev, u8 port, u16 vlan);
-- 
2.48.1