/*
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* Copyright (c) 2016, Mellanox Technologies. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/hash.h>
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#include <linux/mlx5/fs.h>
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#include <linux/ip.h>
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#include <linux/ipv6.h>
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#include "en.h"
|
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struct arfs_tuple {
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__be16 etype;
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u8 ip_proto;
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union {
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__be32 src_ipv4;
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struct in6_addr src_ipv6;
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};
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union {
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__be32 dst_ipv4;
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struct in6_addr dst_ipv6;
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};
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__be16 src_port;
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__be16 dst_port;
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};
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struct arfs_rule {
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struct mlx5e_priv *priv;
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struct work_struct arfs_work;
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struct mlx5_flow_handle *rule;
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struct hlist_node hlist;
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int rxq;
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/* Flow ID passed to ndo_rx_flow_steer */
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int flow_id;
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/* Filter ID returned by ndo_rx_flow_steer */
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int filter_id;
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struct arfs_tuple tuple;
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};
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#define mlx5e_for_each_arfs_rule(hn, tmp, arfs_tables, i, j) \
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for (i = 0; i < ARFS_NUM_TYPES; i++) \
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mlx5e_for_each_hash_arfs_rule(hn, tmp, arfs_tables[i].rules_hash, j)
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#define mlx5e_for_each_hash_arfs_rule(hn, tmp, hash, j) \
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for (j = 0; j < ARFS_HASH_SIZE; j++) \
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hlist_for_each_entry_safe(hn, tmp, &hash[j], hlist)
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static enum mlx5e_traffic_types arfs_get_tt(enum arfs_type type)
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{
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switch (type) {
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case ARFS_IPV4_TCP:
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return MLX5E_TT_IPV4_TCP;
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case ARFS_IPV4_UDP:
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return MLX5E_TT_IPV4_UDP;
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case ARFS_IPV6_TCP:
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return MLX5E_TT_IPV6_TCP;
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case ARFS_IPV6_UDP:
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return MLX5E_TT_IPV6_UDP;
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default:
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return -EINVAL;
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}
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}
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static int arfs_disable(struct mlx5e_priv *priv)
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{
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int err, i;
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for (i = 0; i < ARFS_NUM_TYPES; i++) {
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/* Modify ttc rules destination back to their default */
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err = mlx5e_ttc_fwd_default_dest(priv, arfs_get_tt(i));
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if (err) {
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netdev_err(priv->netdev,
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"%s: modify ttc[%d] default destination failed, err(%d)\n",
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__func__, arfs_get_tt(i), err);
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return err;
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}
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}
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return 0;
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}
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static void arfs_del_rules(struct mlx5e_priv *priv);
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int mlx5e_arfs_disable(struct mlx5e_priv *priv)
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{
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arfs_del_rules(priv);
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return arfs_disable(priv);
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}
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int mlx5e_arfs_enable(struct mlx5e_priv *priv)
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{
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struct mlx5_flow_destination dest = {};
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int err, i;
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dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
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for (i = 0; i < ARFS_NUM_TYPES; i++) {
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dest.ft = priv->fs.arfs.arfs_tables[i].ft.t;
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/* Modify ttc rules destination to point on the aRFS FTs */
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err = mlx5e_ttc_fwd_dest(priv, arfs_get_tt(i), &dest);
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if (err) {
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netdev_err(priv->netdev,
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"%s: modify ttc[%d] dest to arfs, failed err(%d)\n",
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__func__, arfs_get_tt(i), err);
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arfs_disable(priv);
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return err;
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}
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}
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return 0;
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}
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static void arfs_destroy_table(struct arfs_table *arfs_t)
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{
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mlx5_del_flow_rules(arfs_t->default_rule);
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mlx5e_destroy_flow_table(&arfs_t->ft);
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}
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void mlx5e_arfs_destroy_tables(struct mlx5e_priv *priv)
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{
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int i;
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if (!(priv->netdev->hw_features & NETIF_F_NTUPLE))
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return;
|
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arfs_del_rules(priv);
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destroy_workqueue(priv->fs.arfs.wq);
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for (i = 0; i < ARFS_NUM_TYPES; i++) {
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if (!IS_ERR_OR_NULL(priv->fs.arfs.arfs_tables[i].ft.t))
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arfs_destroy_table(&priv->fs.arfs.arfs_tables[i]);
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}
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}
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static int arfs_add_default_rule(struct mlx5e_priv *priv,
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enum arfs_type type)
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{
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struct arfs_table *arfs_t = &priv->fs.arfs.arfs_tables[type];
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struct mlx5e_tir *tir = priv->indir_tir;
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struct mlx5_flow_destination dest = {};
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MLX5_DECLARE_FLOW_ACT(flow_act);
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enum mlx5e_traffic_types tt;
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int err = 0;
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dest.type = MLX5_FLOW_DESTINATION_TYPE_TIR;
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tt = arfs_get_tt(type);
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if (tt == -EINVAL) {
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netdev_err(priv->netdev, "%s: bad arfs_type: %d\n",
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__func__, type);
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return -EINVAL;
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}
|
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/* FIXME: Must use mlx5e_ttc_get_default_dest(),
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* but can't since TTC default is not setup yet !
|
*/
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dest.tir_num = tir[tt].tirn;
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arfs_t->default_rule = mlx5_add_flow_rules(arfs_t->ft.t, NULL,
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&flow_act,
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&dest, 1);
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if (IS_ERR(arfs_t->default_rule)) {
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err = PTR_ERR(arfs_t->default_rule);
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arfs_t->default_rule = NULL;
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netdev_err(priv->netdev, "%s: add rule failed, arfs type=%d\n",
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__func__, type);
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}
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return err;
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}
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#define MLX5E_ARFS_NUM_GROUPS 2
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#define MLX5E_ARFS_GROUP1_SIZE (BIT(16) - 1)
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#define MLX5E_ARFS_GROUP2_SIZE BIT(0)
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#define MLX5E_ARFS_TABLE_SIZE (MLX5E_ARFS_GROUP1_SIZE +\
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MLX5E_ARFS_GROUP2_SIZE)
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static int arfs_create_groups(struct mlx5e_flow_table *ft,
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enum arfs_type type)
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{
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int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
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void *outer_headers_c;
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int ix = 0;
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u32 *in;
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int err;
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u8 *mc;
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ft->g = kcalloc(MLX5E_ARFS_NUM_GROUPS,
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sizeof(*ft->g), GFP_KERNEL);
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in = kvzalloc(inlen, GFP_KERNEL);
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if (!in || !ft->g) {
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kfree(ft->g);
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kvfree(in);
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return -ENOMEM;
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}
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mc = MLX5_ADDR_OF(create_flow_group_in, in, match_criteria);
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outer_headers_c = MLX5_ADDR_OF(fte_match_param, mc,
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outer_headers);
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MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, outer_headers_c, ethertype);
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switch (type) {
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case ARFS_IPV4_TCP:
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case ARFS_IPV6_TCP:
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MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, outer_headers_c, tcp_dport);
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MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, outer_headers_c, tcp_sport);
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break;
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case ARFS_IPV4_UDP:
|
case ARFS_IPV6_UDP:
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MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, outer_headers_c, udp_dport);
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MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, outer_headers_c, udp_sport);
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break;
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default:
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err = -EINVAL;
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goto out;
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}
|
|
switch (type) {
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case ARFS_IPV4_TCP:
|
case ARFS_IPV4_UDP:
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MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, outer_headers_c,
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src_ipv4_src_ipv6.ipv4_layout.ipv4);
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MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, outer_headers_c,
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dst_ipv4_dst_ipv6.ipv4_layout.ipv4);
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break;
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case ARFS_IPV6_TCP:
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case ARFS_IPV6_UDP:
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memset(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_c,
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src_ipv4_src_ipv6.ipv6_layout.ipv6),
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0xff, 16);
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memset(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_c,
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dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
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0xff, 16);
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break;
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default:
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err = -EINVAL;
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goto out;
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}
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MLX5_SET_CFG(in, match_criteria_enable, MLX5_MATCH_OUTER_HEADERS);
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MLX5_SET_CFG(in, start_flow_index, ix);
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ix += MLX5E_ARFS_GROUP1_SIZE;
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MLX5_SET_CFG(in, end_flow_index, ix - 1);
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ft->g[ft->num_groups] = mlx5_create_flow_group(ft->t, in);
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if (IS_ERR(ft->g[ft->num_groups]))
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goto err;
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ft->num_groups++;
|
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memset(in, 0, inlen);
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MLX5_SET_CFG(in, start_flow_index, ix);
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ix += MLX5E_ARFS_GROUP2_SIZE;
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MLX5_SET_CFG(in, end_flow_index, ix - 1);
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ft->g[ft->num_groups] = mlx5_create_flow_group(ft->t, in);
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if (IS_ERR(ft->g[ft->num_groups]))
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goto err;
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ft->num_groups++;
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kvfree(in);
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return 0;
|
|
err:
|
err = PTR_ERR(ft->g[ft->num_groups]);
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ft->g[ft->num_groups] = NULL;
|
out:
|
kvfree(in);
|
|
return err;
|
}
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static int arfs_create_table(struct mlx5e_priv *priv,
|
enum arfs_type type)
|
{
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struct mlx5e_arfs_tables *arfs = &priv->fs.arfs;
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struct mlx5e_flow_table *ft = &arfs->arfs_tables[type].ft;
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struct mlx5_flow_table_attr ft_attr = {};
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int err;
|
|
ft->num_groups = 0;
|
|
ft_attr.max_fte = MLX5E_ARFS_TABLE_SIZE;
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ft_attr.level = MLX5E_ARFS_FT_LEVEL;
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ft_attr.prio = MLX5E_NIC_PRIO;
|
|
ft->t = mlx5_create_flow_table(priv->fs.ns, &ft_attr);
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if (IS_ERR(ft->t)) {
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err = PTR_ERR(ft->t);
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ft->t = NULL;
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return err;
|
}
|
|
err = arfs_create_groups(ft, type);
|
if (err)
|
goto err;
|
|
err = arfs_add_default_rule(priv, type);
|
if (err)
|
goto err;
|
|
return 0;
|
err:
|
mlx5e_destroy_flow_table(ft);
|
return err;
|
}
|
|
int mlx5e_arfs_create_tables(struct mlx5e_priv *priv)
|
{
|
int err = 0;
|
int i;
|
|
if (!(priv->netdev->hw_features & NETIF_F_NTUPLE))
|
return 0;
|
|
spin_lock_init(&priv->fs.arfs.arfs_lock);
|
INIT_LIST_HEAD(&priv->fs.arfs.rules);
|
priv->fs.arfs.wq = create_singlethread_workqueue("mlx5e_arfs");
|
if (!priv->fs.arfs.wq)
|
return -ENOMEM;
|
|
for (i = 0; i < ARFS_NUM_TYPES; i++) {
|
err = arfs_create_table(priv, i);
|
if (err)
|
goto err;
|
}
|
return 0;
|
err:
|
mlx5e_arfs_destroy_tables(priv);
|
return err;
|
}
|
|
#define MLX5E_ARFS_EXPIRY_QUOTA 60
|
|
static void arfs_may_expire_flow(struct mlx5e_priv *priv)
|
{
|
struct arfs_rule *arfs_rule;
|
struct hlist_node *htmp;
|
int quota = 0;
|
int i;
|
int j;
|
|
HLIST_HEAD(del_list);
|
spin_lock_bh(&priv->fs.arfs.arfs_lock);
|
mlx5e_for_each_arfs_rule(arfs_rule, htmp, priv->fs.arfs.arfs_tables, i, j) {
|
if (!work_pending(&arfs_rule->arfs_work) &&
|
rps_may_expire_flow(priv->netdev,
|
arfs_rule->rxq, arfs_rule->flow_id,
|
arfs_rule->filter_id)) {
|
hlist_del_init(&arfs_rule->hlist);
|
hlist_add_head(&arfs_rule->hlist, &del_list);
|
if (quota++ > MLX5E_ARFS_EXPIRY_QUOTA)
|
break;
|
}
|
}
|
spin_unlock_bh(&priv->fs.arfs.arfs_lock);
|
hlist_for_each_entry_safe(arfs_rule, htmp, &del_list, hlist) {
|
if (arfs_rule->rule)
|
mlx5_del_flow_rules(arfs_rule->rule);
|
hlist_del(&arfs_rule->hlist);
|
kfree(arfs_rule);
|
}
|
}
|
|
static void arfs_del_rules(struct mlx5e_priv *priv)
|
{
|
struct hlist_node *htmp;
|
struct arfs_rule *rule;
|
int i;
|
int j;
|
|
HLIST_HEAD(del_list);
|
spin_lock_bh(&priv->fs.arfs.arfs_lock);
|
mlx5e_for_each_arfs_rule(rule, htmp, priv->fs.arfs.arfs_tables, i, j) {
|
hlist_del_init(&rule->hlist);
|
hlist_add_head(&rule->hlist, &del_list);
|
}
|
spin_unlock_bh(&priv->fs.arfs.arfs_lock);
|
|
hlist_for_each_entry_safe(rule, htmp, &del_list, hlist) {
|
cancel_work_sync(&rule->arfs_work);
|
if (rule->rule)
|
mlx5_del_flow_rules(rule->rule);
|
hlist_del(&rule->hlist);
|
kfree(rule);
|
}
|
}
|
|
static struct hlist_head *
|
arfs_hash_bucket(struct arfs_table *arfs_t, __be16 src_port,
|
__be16 dst_port)
|
{
|
unsigned long l;
|
int bucket_idx;
|
|
l = (__force unsigned long)src_port |
|
((__force unsigned long)dst_port << 2);
|
|
bucket_idx = hash_long(l, ARFS_HASH_SHIFT);
|
|
return &arfs_t->rules_hash[bucket_idx];
|
}
|
|
static struct arfs_table *arfs_get_table(struct mlx5e_arfs_tables *arfs,
|
u8 ip_proto, __be16 etype)
|
{
|
if (etype == htons(ETH_P_IP) && ip_proto == IPPROTO_TCP)
|
return &arfs->arfs_tables[ARFS_IPV4_TCP];
|
if (etype == htons(ETH_P_IP) && ip_proto == IPPROTO_UDP)
|
return &arfs->arfs_tables[ARFS_IPV4_UDP];
|
if (etype == htons(ETH_P_IPV6) && ip_proto == IPPROTO_TCP)
|
return &arfs->arfs_tables[ARFS_IPV6_TCP];
|
if (etype == htons(ETH_P_IPV6) && ip_proto == IPPROTO_UDP)
|
return &arfs->arfs_tables[ARFS_IPV6_UDP];
|
|
return NULL;
|
}
|
|
static struct mlx5_flow_handle *arfs_add_rule(struct mlx5e_priv *priv,
|
struct arfs_rule *arfs_rule)
|
{
|
struct mlx5e_arfs_tables *arfs = &priv->fs.arfs;
|
struct arfs_tuple *tuple = &arfs_rule->tuple;
|
struct mlx5_flow_handle *rule = NULL;
|
struct mlx5_flow_destination dest = {};
|
MLX5_DECLARE_FLOW_ACT(flow_act);
|
struct arfs_table *arfs_table;
|
struct mlx5_flow_spec *spec;
|
struct mlx5_flow_table *ft;
|
int err = 0;
|
|
spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
|
if (!spec) {
|
err = -ENOMEM;
|
goto out;
|
}
|
spec->match_criteria_enable = MLX5_MATCH_OUTER_HEADERS;
|
MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
|
outer_headers.ethertype);
|
MLX5_SET(fte_match_param, spec->match_value, outer_headers.ethertype,
|
ntohs(tuple->etype));
|
arfs_table = arfs_get_table(arfs, tuple->ip_proto, tuple->etype);
|
if (!arfs_table) {
|
err = -EINVAL;
|
goto out;
|
}
|
|
ft = arfs_table->ft.t;
|
if (tuple->ip_proto == IPPROTO_TCP) {
|
MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
|
outer_headers.tcp_dport);
|
MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
|
outer_headers.tcp_sport);
|
MLX5_SET(fte_match_param, spec->match_value, outer_headers.tcp_dport,
|
ntohs(tuple->dst_port));
|
MLX5_SET(fte_match_param, spec->match_value, outer_headers.tcp_sport,
|
ntohs(tuple->src_port));
|
} else {
|
MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
|
outer_headers.udp_dport);
|
MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
|
outer_headers.udp_sport);
|
MLX5_SET(fte_match_param, spec->match_value, outer_headers.udp_dport,
|
ntohs(tuple->dst_port));
|
MLX5_SET(fte_match_param, spec->match_value, outer_headers.udp_sport,
|
ntohs(tuple->src_port));
|
}
|
if (tuple->etype == htons(ETH_P_IP)) {
|
memcpy(MLX5_ADDR_OF(fte_match_param, spec->match_value,
|
outer_headers.src_ipv4_src_ipv6.ipv4_layout.ipv4),
|
&tuple->src_ipv4,
|
4);
|
memcpy(MLX5_ADDR_OF(fte_match_param, spec->match_value,
|
outer_headers.dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
|
&tuple->dst_ipv4,
|
4);
|
MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
|
outer_headers.src_ipv4_src_ipv6.ipv4_layout.ipv4);
|
MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
|
outer_headers.dst_ipv4_dst_ipv6.ipv4_layout.ipv4);
|
} else {
|
memcpy(MLX5_ADDR_OF(fte_match_param, spec->match_value,
|
outer_headers.src_ipv4_src_ipv6.ipv6_layout.ipv6),
|
&tuple->src_ipv6,
|
16);
|
memcpy(MLX5_ADDR_OF(fte_match_param, spec->match_value,
|
outer_headers.dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
|
&tuple->dst_ipv6,
|
16);
|
memset(MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
|
outer_headers.src_ipv4_src_ipv6.ipv6_layout.ipv6),
|
0xff,
|
16);
|
memset(MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
|
outer_headers.dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
|
0xff,
|
16);
|
}
|
dest.type = MLX5_FLOW_DESTINATION_TYPE_TIR;
|
dest.tir_num = priv->direct_tir[arfs_rule->rxq].tirn;
|
rule = mlx5_add_flow_rules(ft, spec, &flow_act, &dest, 1);
|
if (IS_ERR(rule)) {
|
err = PTR_ERR(rule);
|
priv->channel_stats[arfs_rule->rxq].rq.arfs_err++;
|
mlx5e_dbg(HW, priv,
|
"%s: add rule(filter id=%d, rq idx=%d, ip proto=0x%x) failed,err=%d\n",
|
__func__, arfs_rule->filter_id, arfs_rule->rxq,
|
tuple->ip_proto, err);
|
}
|
|
out:
|
kvfree(spec);
|
return err ? ERR_PTR(err) : rule;
|
}
|
|
static void arfs_modify_rule_rq(struct mlx5e_priv *priv,
|
struct mlx5_flow_handle *rule, u16 rxq)
|
{
|
struct mlx5_flow_destination dst = {};
|
int err = 0;
|
|
dst.type = MLX5_FLOW_DESTINATION_TYPE_TIR;
|
dst.tir_num = priv->direct_tir[rxq].tirn;
|
err = mlx5_modify_rule_destination(rule, &dst, NULL);
|
if (err)
|
netdev_warn(priv->netdev,
|
"Failed to modify aRFS rule destination to rq=%d\n", rxq);
|
}
|
|
static void arfs_handle_work(struct work_struct *work)
|
{
|
struct arfs_rule *arfs_rule = container_of(work,
|
struct arfs_rule,
|
arfs_work);
|
struct mlx5e_priv *priv = arfs_rule->priv;
|
struct mlx5_flow_handle *rule;
|
|
mutex_lock(&priv->state_lock);
|
if (!test_bit(MLX5E_STATE_OPENED, &priv->state)) {
|
spin_lock_bh(&priv->fs.arfs.arfs_lock);
|
hlist_del(&arfs_rule->hlist);
|
spin_unlock_bh(&priv->fs.arfs.arfs_lock);
|
|
mutex_unlock(&priv->state_lock);
|
kfree(arfs_rule);
|
goto out;
|
}
|
mutex_unlock(&priv->state_lock);
|
|
if (!arfs_rule->rule) {
|
rule = arfs_add_rule(priv, arfs_rule);
|
if (IS_ERR(rule))
|
goto out;
|
arfs_rule->rule = rule;
|
} else {
|
arfs_modify_rule_rq(priv, arfs_rule->rule,
|
arfs_rule->rxq);
|
}
|
out:
|
arfs_may_expire_flow(priv);
|
}
|
|
static struct arfs_rule *arfs_alloc_rule(struct mlx5e_priv *priv,
|
struct arfs_table *arfs_t,
|
const struct flow_keys *fk,
|
u16 rxq, u32 flow_id)
|
{
|
struct arfs_rule *rule;
|
struct arfs_tuple *tuple;
|
|
rule = kzalloc(sizeof(*rule), GFP_ATOMIC);
|
if (!rule)
|
return NULL;
|
|
rule->priv = priv;
|
rule->rxq = rxq;
|
INIT_WORK(&rule->arfs_work, arfs_handle_work);
|
|
tuple = &rule->tuple;
|
tuple->etype = fk->basic.n_proto;
|
tuple->ip_proto = fk->basic.ip_proto;
|
if (tuple->etype == htons(ETH_P_IP)) {
|
tuple->src_ipv4 = fk->addrs.v4addrs.src;
|
tuple->dst_ipv4 = fk->addrs.v4addrs.dst;
|
} else {
|
memcpy(&tuple->src_ipv6, &fk->addrs.v6addrs.src,
|
sizeof(struct in6_addr));
|
memcpy(&tuple->dst_ipv6, &fk->addrs.v6addrs.dst,
|
sizeof(struct in6_addr));
|
}
|
tuple->src_port = fk->ports.src;
|
tuple->dst_port = fk->ports.dst;
|
|
rule->flow_id = flow_id;
|
rule->filter_id = priv->fs.arfs.last_filter_id++ % RPS_NO_FILTER;
|
|
hlist_add_head(&rule->hlist,
|
arfs_hash_bucket(arfs_t, tuple->src_port,
|
tuple->dst_port));
|
return rule;
|
}
|
|
static bool arfs_cmp(const struct arfs_tuple *tuple, const struct flow_keys *fk)
|
{
|
if (tuple->src_port != fk->ports.src || tuple->dst_port != fk->ports.dst)
|
return false;
|
if (tuple->etype != fk->basic.n_proto)
|
return false;
|
if (tuple->etype == htons(ETH_P_IP))
|
return tuple->src_ipv4 == fk->addrs.v4addrs.src &&
|
tuple->dst_ipv4 == fk->addrs.v4addrs.dst;
|
if (tuple->etype == htons(ETH_P_IPV6))
|
return !memcmp(&tuple->src_ipv6, &fk->addrs.v6addrs.src,
|
sizeof(struct in6_addr)) &&
|
!memcmp(&tuple->dst_ipv6, &fk->addrs.v6addrs.dst,
|
sizeof(struct in6_addr));
|
return false;
|
}
|
|
static struct arfs_rule *arfs_find_rule(struct arfs_table *arfs_t,
|
const struct flow_keys *fk)
|
{
|
struct arfs_rule *arfs_rule;
|
struct hlist_head *head;
|
|
head = arfs_hash_bucket(arfs_t, fk->ports.src, fk->ports.dst);
|
hlist_for_each_entry(arfs_rule, head, hlist) {
|
if (arfs_cmp(&arfs_rule->tuple, fk))
|
return arfs_rule;
|
}
|
|
return NULL;
|
}
|
|
int mlx5e_rx_flow_steer(struct net_device *dev, const struct sk_buff *skb,
|
u16 rxq_index, u32 flow_id)
|
{
|
struct mlx5e_priv *priv = netdev_priv(dev);
|
struct mlx5e_arfs_tables *arfs = &priv->fs.arfs;
|
struct arfs_table *arfs_t;
|
struct arfs_rule *arfs_rule;
|
struct flow_keys fk;
|
|
if (!skb_flow_dissect_flow_keys(skb, &fk, 0))
|
return -EPROTONOSUPPORT;
|
|
if (fk.basic.n_proto != htons(ETH_P_IP) &&
|
fk.basic.n_proto != htons(ETH_P_IPV6))
|
return -EPROTONOSUPPORT;
|
|
if (skb->encapsulation)
|
return -EPROTONOSUPPORT;
|
|
arfs_t = arfs_get_table(arfs, fk.basic.ip_proto, fk.basic.n_proto);
|
if (!arfs_t)
|
return -EPROTONOSUPPORT;
|
|
spin_lock_bh(&arfs->arfs_lock);
|
arfs_rule = arfs_find_rule(arfs_t, &fk);
|
if (arfs_rule) {
|
if (arfs_rule->rxq == rxq_index) {
|
spin_unlock_bh(&arfs->arfs_lock);
|
return arfs_rule->filter_id;
|
}
|
arfs_rule->rxq = rxq_index;
|
} else {
|
arfs_rule = arfs_alloc_rule(priv, arfs_t, &fk, rxq_index, flow_id);
|
if (!arfs_rule) {
|
spin_unlock_bh(&arfs->arfs_lock);
|
return -ENOMEM;
|
}
|
}
|
queue_work(priv->fs.arfs.wq, &arfs_rule->arfs_work);
|
spin_unlock_bh(&arfs->arfs_lock);
|
return arfs_rule->filter_id;
|
}
|
