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net/mlx5: MPFS, Allow adding the same MAC more than once

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Remove the limitation preventing adding a vport's MAC address to the
Multi-Physical Function Switch (MPFS) more than once per E-switch, as
there is no difference in the MPFS if an address is being used by an
E-switch more than once.

This allows the E-switch to have multiple vports with the same MAC
address, allowing vports to be classified by VLAN id instead of by MAC
if desired.

Signed-off-by: Gavi Teitz <gavi@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Gavi Teitz 2019-06-11 12:29:41 +03:00 committed by Saeed Mahameed
parent 6311f30884
commit e7e0bee8c5
1 changed files with 6 additions and 1 deletions
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7
drivers/net/ethernet/mellanox/mlx5/core/lib/mpfs.c
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@ -67,6 +67,7 @@ static int del_l2table_entry_cmd(struct mlx5_core_dev *dev, u32 index)
struct l2table_node {
struct l2addr_node node;
u32 index; /* index in HW l2 table */
int ref_count;
};
struct mlx5_mpfs {
@ -144,7 +145,7 @@ int mlx5_mpfs_add_mac(struct mlx5_core_dev *dev, u8 *mac)
l2addr = l2addr_hash_find(mpfs->hash, mac, struct l2table_node);
if (l2addr) {
err = -EEXIST;
l2addr->ref_count++;
goto out;
}
@ -163,6 +164,7 @@ int mlx5_mpfs_add_mac(struct mlx5_core_dev *dev, u8 *mac)
goto set_table_entry_err;
l2addr->index = index;
l2addr->ref_count = 1;
mlx5_core_dbg(dev, "MPFS mac added %pM, index (%d)\n", mac, index);
goto out;
@ -194,6 +196,9 @@ int mlx5_mpfs_del_mac(struct mlx5_core_dev *dev, u8 *mac)
goto unlock;
}
if (--l2addr->ref_count > 0)
goto unlock;
index = l2addr->index;
del_l2table_entry_cmd(dev, index);
l2addr_hash_del(l2addr);