/*
* Copyright (c) 2015, Mellanox Technologies. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <linux/list.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
#include <linux/tcp.h>
#include <linux/mlx5/fs.h>
#include "en.h"
static int mlx5e_add_l2_flow_rule(struct mlx5e_priv *priv,
struct mlx5e_l2_rule *ai, int type);
static void mlx5e_del_l2_flow_rule(struct mlx5e_priv *priv,
struct mlx5e_l2_rule *ai);
enum {
MLX5E_FULLMATCH = 0,
MLX5E_ALLMULTI = 1,
MLX5E_PROMISC = 2,
};
enum {
MLX5E_UC = 0,
MLX5E_MC_IPV4 = 1,
MLX5E_MC_IPV6 = 2,
MLX5E_MC_OTHER = 3,
};
enum {
MLX5E_ACTION_NONE = 0,
MLX5E_ACTION_ADD = 1,
MLX5E_ACTION_DEL = 2,
};
struct mlx5e_l2_hash_node {
struct hlist_node hlist;
u8 action;
struct mlx5e_l2_rule ai;
};
static inline int mlx5e_hash_l2(u8 *addr)
{
return addr[5];
}
static void mlx5e_add_l2_to_hash(struct hlist_head *hash, u8 *addr)
{
struct mlx5e_l2_hash_node *hn;
int ix = mlx5e_hash_l2(addr);
int found = 0;
hlist_for_each_entry(hn, &hash[ix], hlist)
if (ether_addr_equal_64bits(hn->ai.addr, addr)) {
found = 1;
break;
}
if (found) {
hn->action = MLX5E_ACTION_NONE;
return;
}
hn = kzalloc(sizeof(*hn), GFP_ATOMIC);
if (!hn)
return;
ether_addr_copy(hn->ai.addr, addr);
hn->action = MLX5E_ACTION_ADD;
hlist_add_head(&hn->hlist, &hash[ix]);
}
static void mlx5e_del_l2_from_hash(struct mlx5e_l2_hash_node *hn)
{
hlist_del(&hn->hlist);
kfree(hn);
}
static int mlx5e_vport_context_update_vlans(struct mlx5e_priv *priv)
{
struct net_device *ndev = priv->netdev;
int max_list_size;
int list_size;
u16 *vlans;
int vlan;
int err;
int i;
list_size = 0;
for_each_set_bit(vlan, priv->fs.vlan.active_vlans, VLAN_N_VID)
list_size++;
max_list_size = 1 << MLX5_CAP_GEN(priv->mdev, log_max_vlan_list);
if (list_size > max_list_size) {
netdev_warn(ndev,
"netdev vlans list size (%d) > (%d) max vport list size, some vlans will be dropped\n",
list_size, max_list_size);
list_size = max_list_size;
}
vlans = kcalloc(list_size, sizeof(*vlans), GFP_KERNEL);
if (!vlans)
return -ENOMEM;
i = 0;
for_each_set_bit(