linux_dsm_epyc7002/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
Jiri Pirko cedbb8b259 mlxsw: spectrum_flower: Set dummy FID before forward action
HW requires the FID to be valid in order for the forward action to work.
So regardless of the current FID validity, just set the dummy FID which
would do the trick.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-20 15:32:30 -04:00

403 lines
12 KiB
C

/*
* drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
* Copyright (c) 2017 Mellanox Technologies. All rights reserved.
* Copyright (c) 2017 Jiri Pirko <jiri@mellanox.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the names of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/netdevice.h>
#include <net/flow_dissector.h>
#include <net/pkt_cls.h>
#include <net/tc_act/tc_gact.h>
#include <net/tc_act/tc_mirred.h>
#include <net/tc_act/tc_vlan.h>
#include "spectrum.h"
#include "core_acl_flex_keys.h"
static int mlxsw_sp_flower_parse_actions(struct mlxsw_sp *mlxsw_sp,
struct net_device *dev,
struct mlxsw_sp_acl_rule_info *rulei,
struct tcf_exts *exts)
{
const struct tc_action *a;
LIST_HEAD(actions);
int err;
if (tc_no_actions(exts))
return 0;
/* Count action is inserted first */
err = mlxsw_sp_acl_rulei_act_count(mlxsw_sp, rulei);
if (err)
return err;
tcf_exts_to_list(exts, &actions);
list_for_each_entry(a, &actions, list) {
if (is_tcf_gact_shot(a)) {
err = mlxsw_sp_acl_rulei_act_drop(rulei);
if (err)
return err;
} else if (is_tcf_mirred_egress_redirect(a)) {
int ifindex = tcf_mirred_ifindex(a);
struct net_device *out_dev;
err = mlxsw_sp_acl_rulei_act_fid_set(mlxsw_sp, rulei,
MLXSW_SP_DUMMY_FID);
if (err)
return err;
out_dev = __dev_get_by_index(dev_net(dev), ifindex);
if (out_dev == dev)
out_dev = NULL;
err = mlxsw_sp_acl_rulei_act_fwd(mlxsw_sp, rulei,
out_dev);
if (err)
return err;
} else if (is_tcf_vlan(a)) {
u16 proto = be16_to_cpu(tcf_vlan_push_proto(a));
u32 action = tcf_vlan_action(a);
u8 prio = tcf_vlan_push_prio(a);
u16 vid = tcf_vlan_push_vid(a);
return mlxsw_sp_acl_rulei_act_vlan(mlxsw_sp, rulei,
action, vid,
proto, prio);
} else {
dev_err(mlxsw_sp->bus_info->dev, "Unsupported action\n");
return -EOPNOTSUPP;
}
}
return 0;
}
static void mlxsw_sp_flower_parse_ipv4(struct mlxsw_sp_acl_rule_info *rulei,
struct tc_cls_flower_offload *f)
{
struct flow_dissector_key_ipv4_addrs *key =
skb_flow_dissector_target(f->dissector,
FLOW_DISSECTOR_KEY_IPV4_ADDRS,
f->key);
struct flow_dissector_key_ipv4_addrs *mask =
skb_flow_dissector_target(f->dissector,
FLOW_DISSECTOR_KEY_IPV4_ADDRS,
f->mask);
mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_SRC_IP4,
ntohl(key->src), ntohl(mask->src));
mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_DST_IP4,
ntohl(key->dst), ntohl(mask->dst));
}
static void mlxsw_sp_flower_parse_ipv6(struct mlxsw_sp_acl_rule_info *rulei,
struct tc_cls_flower_offload *f)
{
struct flow_dissector_key_ipv6_addrs *key =
skb_flow_dissector_target(f->dissector,
FLOW_DISSECTOR_KEY_IPV6_ADDRS,
f->key);
struct flow_dissector_key_ipv6_addrs *mask =
skb_flow_dissector_target(f->dissector,
FLOW_DISSECTOR_KEY_IPV6_ADDRS,
f->mask);
size_t addr_half_size = sizeof(key->src) / 2;
mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP6_HI,
&key->src.s6_addr[0],
&mask->src.s6_addr[0],
addr_half_size);
mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP6_LO,
&key->src.s6_addr[addr_half_size],
&mask->src.s6_addr[addr_half_size],
addr_half_size);
mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP6_HI,
&key->dst.s6_addr[0],
&mask->dst.s6_addr[0],
addr_half_size);
mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP6_LO,
&key->dst.s6_addr[addr_half_size],
&mask->dst.s6_addr[addr_half_size],
addr_half_size);
}
static int mlxsw_sp_flower_parse_ports(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule_info *rulei,
struct tc_cls_flower_offload *f,
u8 ip_proto)
{
struct flow_dissector_key_ports *key, *mask;
if (!dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_PORTS))
return 0;
if (ip_proto != IPPROTO_TCP && ip_proto != IPPROTO_UDP) {
dev_err(mlxsw_sp->bus_info->dev, "Only UDP and TCP keys are supported\n");
return -EINVAL;
}
key = skb_flow_dissector_target(f->dissector,
FLOW_DISSECTOR_KEY_PORTS,
f->key);
mask = skb_flow_dissector_target(f->dissector,
FLOW_DISSECTOR_KEY_PORTS,
f->mask);
mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_DST_L4_PORT,
ntohs(key->dst), ntohs(mask->dst));
mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_SRC_L4_PORT,
ntohs(key->src), ntohs(mask->src));
return 0;
}
static int mlxsw_sp_flower_parse(struct mlxsw_sp *mlxsw_sp,
struct net_device *dev,
struct mlxsw_sp_acl_rule_info *rulei,
struct tc_cls_flower_offload *f)
{
u16 addr_type = 0;
u8 ip_proto = 0;
int err;
if (f->dissector->used_keys &
~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
BIT(FLOW_DISSECTOR_KEY_BASIC) |
BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
BIT(FLOW_DISSECTOR_KEY_PORTS) |
BIT(FLOW_DISSECTOR_KEY_VLAN))) {
dev_err(mlxsw_sp->bus_info->dev, "Unsupported key\n");
return -EOPNOTSUPP;
}
mlxsw_sp_acl_rulei_priority(rulei, f->prio);
if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CONTROL)) {
struct flow_dissector_key_control *key =
skb_flow_dissector_target(f->dissector,
FLOW_DISSECTOR_KEY_CONTROL,
f->key);
addr_type = key->addr_type;
}
if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
struct flow_dissector_key_basic *key =
skb_flow_dissector_target(f->dissector,
FLOW_DISSECTOR_KEY_BASIC,
f->key);
struct flow_dissector_key_basic *mask =
skb_flow_dissector_target(f->dissector,
FLOW_DISSECTOR_KEY_BASIC,
f->mask);
u16 n_proto_key = ntohs(key->n_proto);
u16 n_proto_mask = ntohs(mask->n_proto);
if (n_proto_key == ETH_P_ALL) {
n_proto_key = 0;
n_proto_mask = 0;
}
mlxsw_sp_acl_rulei_keymask_u32(rulei,
MLXSW_AFK_ELEMENT_ETHERTYPE,
n_proto_key, n_proto_mask);
ip_proto = key->ip_proto;
mlxsw_sp_acl_rulei_keymask_u32(rulei,
MLXSW_AFK_ELEMENT_IP_PROTO,
key->ip_proto, mask->ip_proto);
}
if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
struct flow_dissector_key_eth_addrs *key =
skb_flow_dissector_target(f->dissector,
FLOW_DISSECTOR_KEY_ETH_ADDRS,
f->key);
struct flow_dissector_key_eth_addrs *mask =
skb_flow_dissector_target(f->dissector,
FLOW_DISSECTOR_KEY_ETH_ADDRS,
f->mask);
mlxsw_sp_acl_rulei_keymask_buf(rulei,
MLXSW_AFK_ELEMENT_DMAC,
key->dst, mask->dst,
sizeof(key->dst));
mlxsw_sp_acl_rulei_keymask_buf(rulei,
MLXSW_AFK_ELEMENT_SMAC,
key->src, mask->src,
sizeof(key->src));
}
if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_VLAN)) {
struct flow_dissector_key_vlan *key =
skb_flow_dissector_target(f->dissector,
FLOW_DISSECTOR_KEY_VLAN,
f->key);
struct flow_dissector_key_vlan *mask =
skb_flow_dissector_target(f->dissector,
FLOW_DISSECTOR_KEY_VLAN,
f->mask);
if (mask->vlan_id != 0)
mlxsw_sp_acl_rulei_keymask_u32(rulei,
MLXSW_AFK_ELEMENT_VID,
key->vlan_id,
mask->vlan_id);
if (mask->vlan_priority != 0)
mlxsw_sp_acl_rulei_keymask_u32(rulei,
MLXSW_AFK_ELEMENT_PCP,
key->vlan_priority,
mask->vlan_priority);
}
if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS)
mlxsw_sp_flower_parse_ipv4(rulei, f);
if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS)
mlxsw_sp_flower_parse_ipv6(rulei, f);
err = mlxsw_sp_flower_parse_ports(mlxsw_sp, rulei, f, ip_proto);
if (err)
return err;
return mlxsw_sp_flower_parse_actions(mlxsw_sp, dev, rulei, f->exts);
}
int mlxsw_sp_flower_replace(struct mlxsw_sp_port *mlxsw_sp_port, bool ingress,
__be16 protocol, struct tc_cls_flower_offload *f)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct net_device *dev = mlxsw_sp_port->dev;
struct mlxsw_sp_acl_rule_info *rulei;
struct mlxsw_sp_acl_ruleset *ruleset;
struct mlxsw_sp_acl_rule *rule;
int err;
ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, dev, ingress,
MLXSW_SP_ACL_PROFILE_FLOWER);
if (IS_ERR(ruleset))
return PTR_ERR(ruleset);
rule = mlxsw_sp_acl_rule_create(mlxsw_sp, ruleset, f->cookie);
if (IS_ERR(rule)) {
err = PTR_ERR(rule);
goto err_rule_create;
}
rulei = mlxsw_sp_acl_rule_rulei(rule);
err = mlxsw_sp_flower_parse(mlxsw_sp, dev, rulei, f);
if (err)
goto err_flower_parse;
err = mlxsw_sp_acl_rulei_commit(rulei);
if (err)
goto err_rulei_commit;
err = mlxsw_sp_acl_rule_add(mlxsw_sp, rule);
if (err)
goto err_rule_add;
mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset);
return 0;
err_rule_add:
err_rulei_commit:
err_flower_parse:
mlxsw_sp_acl_rule_destroy(mlxsw_sp, rule);
err_rule_create:
mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset);
return err;
}
void mlxsw_sp_flower_destroy(struct mlxsw_sp_port *mlxsw_sp_port, bool ingress,
struct tc_cls_flower_offload *f)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct mlxsw_sp_acl_ruleset *ruleset;
struct mlxsw_sp_acl_rule *rule;
ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, mlxsw_sp_port->dev,
ingress,
MLXSW_SP_ACL_PROFILE_FLOWER);
if (IS_ERR(ruleset))
return;
rule = mlxsw_sp_acl_rule_lookup(mlxsw_sp, ruleset, f->cookie);
if (rule) {
mlxsw_sp_acl_rule_del(mlxsw_sp, rule);
mlxsw_sp_acl_rule_destroy(mlxsw_sp, rule);
}
mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset);
}
int mlxsw_sp_flower_stats(struct mlxsw_sp_port *mlxsw_sp_port, bool ingress,
struct tc_cls_flower_offload *f)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct mlxsw_sp_acl_ruleset *ruleset;
struct mlxsw_sp_acl_rule *rule;
struct tc_action *a;
LIST_HEAD(actions);
u64 packets;
u64 lastuse;
u64 bytes;
int err;
ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, mlxsw_sp_port->dev,
ingress,
MLXSW_SP_ACL_PROFILE_FLOWER);
if (WARN_ON(IS_ERR(ruleset)))
return -EINVAL;
rule = mlxsw_sp_acl_rule_lookup(mlxsw_sp, ruleset, f->cookie);
if (!rule)
return -EINVAL;
err = mlxsw_sp_acl_rule_get_stats(mlxsw_sp, rule, &packets, &bytes,
&lastuse);
if (err)
goto err_rule_get_stats;
preempt_disable();
tcf_exts_to_list(f->exts, &actions);
list_for_each_entry(a, &actions, list)
tcf_action_stats_update(a, bytes, packets, lastuse);
preempt_enable();
mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset);
return 0;
err_rule_get_stats:
mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset);
return err;
}