mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-27 14:43:58 +08:00
mlxsw: spectrum: Implement TC flower offload
Extend the existing setup_tc ndo call and allow to offload cls_flower rules. Only limited set of dissector keys and actions are supported now. Use previously introduced ACL infrastructure to offload cls_flower rules to be processed in the HW. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko
David S. Miller
parent
69ca05ce9d
commit
7aa0f5aa90
@ -14,8 +14,8 @@ mlxsw_switchx2-objs := switchx2.o
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obj-$(CONFIG_MLXSW_SPECTRUM) += mlxsw_spectrum.o
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mlxsw_spectrum-objs := spectrum.o spectrum_buffers.o \
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spectrum_switchdev.o spectrum_router.o \
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spectrum_kvdl.o spectrum_acl.o \
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spectrum_acl_tcam.o
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spectrum_kvdl.o spectrum_acl_tcam.o \
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spectrum_acl.o spectrum_flower.o
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mlxsw_spectrum-$(CONFIG_MLXSW_SPECTRUM_DCB) += spectrum_dcb.o
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obj-$(CONFIG_MLXSW_MINIMAL) += mlxsw_minimal.o
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mlxsw_minimal-objs := minimal.o
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@ -1355,7 +1355,8 @@ static int mlxsw_sp_setup_tc(struct net_device *dev, u32 handle,
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struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
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bool ingress = TC_H_MAJ(handle) == TC_H_MAJ(TC_H_INGRESS);
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if (tc->type == TC_SETUP_MATCHALL) {
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switch (tc->type) {
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case TC_SETUP_MATCHALL:
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switch (tc->cls_mall->command) {
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case TC_CLSMATCHALL_REPLACE:
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return mlxsw_sp_port_add_cls_matchall(mlxsw_sp_port,
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@ -1369,6 +1370,18 @@ static int mlxsw_sp_setup_tc(struct net_device *dev, u32 handle,
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default:
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return -EINVAL;
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}
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case TC_SETUP_CLSFLOWER:
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switch (tc->cls_flower->command) {
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case TC_CLSFLOWER_REPLACE:
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return mlxsw_sp_flower_replace(mlxsw_sp_port, ingress,
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proto, tc->cls_flower);
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case TC_CLSFLOWER_DESTROY:
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mlxsw_sp_flower_destroy(mlxsw_sp_port, ingress,
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tc->cls_flower);
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return 0;
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default:
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return -EOPNOTSUPP;
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}
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}
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return -EOPNOTSUPP;
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@ -47,6 +47,7 @@
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#include <linux/in6.h>
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#include <linux/notifier.h>
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#include <net/psample.h>
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#include <net/pkt_cls.h>
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#include "port.h"
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#include "core.h"
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@ -698,4 +699,9 @@ void mlxsw_sp_acl_fini(struct mlxsw_sp *mlxsw_sp);
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extern const struct mlxsw_sp_acl_ops mlxsw_sp_acl_tcam_ops;
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int mlxsw_sp_flower_replace(struct mlxsw_sp_port *mlxsw_sp_port, bool ingress,
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__be16 protocol, struct tc_cls_flower_offload *f);
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void mlxsw_sp_flower_destroy(struct mlxsw_sp_port *mlxsw_sp_port, bool ingress,
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struct tc_cls_flower_offload *f);
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#endif
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309
drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
Normal file
309
drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
Normal file
@ -0,0 +1,309 @@
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/*
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* drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
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* Copyright (c) 2017 Mellanox Technologies. All rights reserved.
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* Copyright (c) 2017 Jiri Pirko <jiri@mellanox.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the names of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/netdevice.h>
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#include <net/flow_dissector.h>
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#include <net/pkt_cls.h>
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#include <net/tc_act/tc_gact.h>
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#include <net/tc_act/tc_mirred.h>
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#include "spectrum.h"
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#include "core_acl_flex_keys.h"
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static int mlxsw_sp_flower_parse_actions(struct mlxsw_sp *mlxsw_sp,
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struct net_device *dev,
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struct mlxsw_sp_acl_rule_info *rulei,
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struct tcf_exts *exts)
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{
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const struct tc_action *a;
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LIST_HEAD(actions);
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int err;
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if (tc_no_actions(exts))
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return 0;
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tcf_exts_to_list(exts, &actions);
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list_for_each_entry(a, &actions, list) {
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if (is_tcf_gact_shot(a)) {
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err = mlxsw_sp_acl_rulei_act_drop(rulei);
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if (err)
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return err;
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} else if (is_tcf_mirred_egress_redirect(a)) {
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int ifindex = tcf_mirred_ifindex(a);
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struct net_device *out_dev;
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out_dev = __dev_get_by_index(dev_net(dev), ifindex);
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if (out_dev == dev)
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out_dev = NULL;
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err = mlxsw_sp_acl_rulei_act_fwd(mlxsw_sp, rulei,
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out_dev);
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if (err)
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return err;
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} else {
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dev_err(mlxsw_sp->bus_info->dev, "Unsupported action\n");
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return -EOPNOTSUPP;
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}
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}
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return 0;
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}
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static void mlxsw_sp_flower_parse_ipv4(struct mlxsw_sp_acl_rule_info *rulei,
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struct tc_cls_flower_offload *f)
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{
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struct flow_dissector_key_ipv4_addrs *key =
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skb_flow_dissector_target(f->dissector,
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FLOW_DISSECTOR_KEY_IPV4_ADDRS,
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f->key);
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struct flow_dissector_key_ipv4_addrs *mask =
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skb_flow_dissector_target(f->dissector,
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FLOW_DISSECTOR_KEY_IPV4_ADDRS,
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f->mask);
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mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_SRC_IP4,
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ntohl(key->src), ntohl(mask->src));
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mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_DST_IP4,
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ntohl(key->dst), ntohl(mask->dst));
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}
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static void mlxsw_sp_flower_parse_ipv6(struct mlxsw_sp_acl_rule_info *rulei,
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struct tc_cls_flower_offload *f)
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{
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struct flow_dissector_key_ipv6_addrs *key =
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skb_flow_dissector_target(f->dissector,
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FLOW_DISSECTOR_KEY_IPV6_ADDRS,
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f->key);
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struct flow_dissector_key_ipv6_addrs *mask =
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skb_flow_dissector_target(f->dissector,
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FLOW_DISSECTOR_KEY_IPV6_ADDRS,
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f->mask);
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size_t addr_half_size = sizeof(key->src) / 2;
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mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP6_HI,
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&key->src.s6_addr[0],
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&mask->src.s6_addr[0],
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addr_half_size);
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mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP6_LO,
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&key->src.s6_addr[addr_half_size],
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&mask->src.s6_addr[addr_half_size],
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addr_half_size);
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mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP6_HI,
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&key->dst.s6_addr[0],
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&mask->dst.s6_addr[0],
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addr_half_size);
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mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP6_LO,
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&key->dst.s6_addr[addr_half_size],
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&mask->dst.s6_addr[addr_half_size],
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addr_half_size);
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}
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static int mlxsw_sp_flower_parse_ports(struct mlxsw_sp *mlxsw_sp,
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struct mlxsw_sp_acl_rule_info *rulei,
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struct tc_cls_flower_offload *f,
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u8 ip_proto)
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{
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struct flow_dissector_key_ports *key, *mask;
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if (!dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_PORTS))
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return 0;
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if (ip_proto != IPPROTO_TCP && ip_proto != IPPROTO_UDP) {
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dev_err(mlxsw_sp->bus_info->dev, "Only UDP and TCP keys are supported\n");
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return -EINVAL;
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}
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key = skb_flow_dissector_target(f->dissector,
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FLOW_DISSECTOR_KEY_PORTS,
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f->key);
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mask = skb_flow_dissector_target(f->dissector,
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FLOW_DISSECTOR_KEY_PORTS,
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f->mask);
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mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_DST_L4_PORT,
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ntohs(key->dst), ntohs(mask->dst));
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mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_SRC_L4_PORT,
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ntohs(key->src), ntohs(mask->src));
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return 0;
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}
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static int mlxsw_sp_flower_parse(struct mlxsw_sp *mlxsw_sp,
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struct net_device *dev,
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struct mlxsw_sp_acl_rule_info *rulei,
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struct tc_cls_flower_offload *f)
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{
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u16 addr_type = 0;
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u8 ip_proto = 0;
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int err;
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if (f->dissector->used_keys &
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~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
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BIT(FLOW_DISSECTOR_KEY_BASIC) |
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BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
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BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
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BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
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BIT(FLOW_DISSECTOR_KEY_PORTS))) {
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dev_err(mlxsw_sp->bus_info->dev, "Unsupported key\n");
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return -EOPNOTSUPP;
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}
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mlxsw_sp_acl_rulei_priority(rulei, f->prio);
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if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CONTROL)) {
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struct flow_dissector_key_control *key =
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skb_flow_dissector_target(f->dissector,
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FLOW_DISSECTOR_KEY_CONTROL,
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f->key);
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addr_type = key->addr_type;
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}
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if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
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struct flow_dissector_key_basic *key =
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skb_flow_dissector_target(f->dissector,
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FLOW_DISSECTOR_KEY_BASIC,
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f->key);
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struct flow_dissector_key_basic *mask =
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skb_flow_dissector_target(f->dissector,
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FLOW_DISSECTOR_KEY_BASIC,
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f->mask);
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ip_proto = key->ip_proto;
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mlxsw_sp_acl_rulei_keymask_u32(rulei,
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MLXSW_AFK_ELEMENT_ETHERTYPE,
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ntohs(key->n_proto),
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ntohs(mask->n_proto));
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mlxsw_sp_acl_rulei_keymask_u32(rulei,
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MLXSW_AFK_ELEMENT_IP_PROTO,
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key->ip_proto, mask->ip_proto);
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}
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if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
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struct flow_dissector_key_eth_addrs *key =
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skb_flow_dissector_target(f->dissector,
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FLOW_DISSECTOR_KEY_ETH_ADDRS,
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f->key);
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struct flow_dissector_key_eth_addrs *mask =
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skb_flow_dissector_target(f->dissector,
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FLOW_DISSECTOR_KEY_ETH_ADDRS,
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f->mask);
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mlxsw_sp_acl_rulei_keymask_buf(rulei,
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MLXSW_AFK_ELEMENT_DMAC,
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key->dst, mask->dst,
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sizeof(key->dst));
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mlxsw_sp_acl_rulei_keymask_buf(rulei,
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MLXSW_AFK_ELEMENT_SMAC,
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key->src, mask->src,
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sizeof(key->src));
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}
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if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS)
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mlxsw_sp_flower_parse_ipv4(rulei, f);
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if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS)
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mlxsw_sp_flower_parse_ipv6(rulei, f);
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err = mlxsw_sp_flower_parse_ports(mlxsw_sp, rulei, f, ip_proto);
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if (err)
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return err;
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return mlxsw_sp_flower_parse_actions(mlxsw_sp, dev, rulei, f->exts);
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}
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int mlxsw_sp_flower_replace(struct mlxsw_sp_port *mlxsw_sp_port, bool ingress,
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__be16 protocol, struct tc_cls_flower_offload *f)
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{
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struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
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struct net_device *dev = mlxsw_sp_port->dev;
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struct mlxsw_sp_acl_rule_info *rulei;
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struct mlxsw_sp_acl_ruleset *ruleset;
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struct mlxsw_sp_acl_rule *rule;
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int err;
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ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, dev, ingress,
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MLXSW_SP_ACL_PROFILE_FLOWER);
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if (IS_ERR(ruleset))
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return PTR_ERR(ruleset);
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rule = mlxsw_sp_acl_rule_create(mlxsw_sp, ruleset, f->cookie);
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if (IS_ERR(rule)) {
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err = PTR_ERR(rule);
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goto err_rule_create;
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}
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rulei = mlxsw_sp_acl_rule_rulei(rule);
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err = mlxsw_sp_flower_parse(mlxsw_sp, dev, rulei, f);
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if (err)
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goto err_flower_parse;
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err = mlxsw_sp_acl_rulei_commit(rulei);
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if (err)
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goto err_rulei_commit;
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err = mlxsw_sp_acl_rule_add(mlxsw_sp, rule);
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if (err)
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goto err_rule_add;
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mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset);
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return 0;
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err_rule_add:
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err_rulei_commit:
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err_flower_parse:
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mlxsw_sp_acl_rule_destroy(mlxsw_sp, rule);
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err_rule_create:
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mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset);
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return err;
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}
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void mlxsw_sp_flower_destroy(struct mlxsw_sp_port *mlxsw_sp_port, bool ingress,
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struct tc_cls_flower_offload *f)
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{
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struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
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struct mlxsw_sp_acl_ruleset *ruleset;
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struct mlxsw_sp_acl_rule *rule;
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ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, mlxsw_sp_port->dev,
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ingress,
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MLXSW_SP_ACL_PROFILE_FLOWER);
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if (WARN_ON(IS_ERR(ruleset)))
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return;
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rule = mlxsw_sp_acl_rule_lookup(mlxsw_sp, ruleset, f->cookie);
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if (!WARN_ON(!rule)) {
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mlxsw_sp_acl_rule_del(mlxsw_sp, rule);
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mlxsw_sp_acl_rule_destroy(mlxsw_sp, rule);
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}
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mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset);
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}
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