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nfp: extend flower matching capabilities
Extends matching capabilities for flower offloads to include vlan, layer 2, layer 3 and layer 4 type matches. This includes both exact and wildcard matching. Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com> Signed-off-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pieter Jansen van Vuuren
David S. Miller
parent
af9d842c13
commit
5571e8c9f2
@ -33,6 +33,7 @@ ifeq ($(CONFIG_NFP_APP_FLOWER),y)
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nfp-objs += \
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flower/cmsg.o \
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flower/main.o \
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flower/match.o \
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flower/offload.o
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endif
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@ -52,6 +52,10 @@
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#define NFP_FLOWER_LAYER_ETHER BIT(3)
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#define NFP_FLOWER_LAYER_ARP BIT(4)
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#define NFP_FLOWER_MASK_VLAN_PRIO GENMASK(15, 13)
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#define NFP_FLOWER_MASK_VLAN_CFI BIT(12)
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#define NFP_FLOWER_MASK_VLAN_VID GENMASK(11, 0)
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/* Metadata without L2 (1W/4B)
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* ----------------------------------------------------------------
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* 3 2 1
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@ -66,4 +66,9 @@ struct nfp_fl_payload {
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int nfp_flower_setup_tc(struct nfp_app *app, struct net_device *netdev,
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u32 handle, __be16 proto, struct tc_to_netdev *tc);
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int nfp_flower_compile_flow_match(struct tc_cls_flower_offload *flow,
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struct nfp_fl_key_ls *key_ls,
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struct net_device *netdev,
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struct nfp_fl_payload *nfp_flow);
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#endif
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292
drivers/net/ethernet/netronome/nfp/flower/match.c
Normal file
292
drivers/net/ethernet/netronome/nfp/flower/match.c
Normal file
@ -0,0 +1,292 @@
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/*
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* Copyright (C) 2017 Netronome Systems, Inc.
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*
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* This software is dual licensed under the GNU General License Version 2,
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* June 1991 as shown in the file COPYING in the top-level directory of this
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* source tree or the BSD 2-Clause License provided below. You have the
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* option to license this software under the complete terms of either license.
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*
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* The BSD 2-Clause License:
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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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* 1. 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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* 2. 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/bitfield.h>
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#include <net/pkt_cls.h>
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#include "cmsg.h"
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#include "main.h"
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static void
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nfp_flower_compile_meta_tci(struct nfp_flower_meta_two *frame,
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struct tc_cls_flower_offload *flow, u8 key_type,
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bool mask_version)
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{
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struct flow_dissector_key_vlan *flow_vlan;
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u16 tmp_tci;
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/* Populate the metadata frame. */
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frame->nfp_flow_key_layer = key_type;
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frame->mask_id = ~0;
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if (mask_version) {
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frame->tci = cpu_to_be16(~0);
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return;
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}
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flow_vlan = skb_flow_dissector_target(flow->dissector,
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FLOW_DISSECTOR_KEY_VLAN,
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flow->key);
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/* Populate the tci field. */
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if (!flow_vlan->vlan_id) {
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tmp_tci = 0;
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} else {
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tmp_tci = FIELD_PREP(NFP_FLOWER_MASK_VLAN_PRIO,
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flow_vlan->vlan_priority) |
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FIELD_PREP(NFP_FLOWER_MASK_VLAN_VID,
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flow_vlan->vlan_id) |
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NFP_FLOWER_MASK_VLAN_CFI;
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}
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frame->tci = cpu_to_be16(tmp_tci);
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}
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static void
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nfp_flower_compile_meta(struct nfp_flower_meta_one *frame, u8 key_type)
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{
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frame->nfp_flow_key_layer = key_type;
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frame->mask_id = 0;
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frame->reserved = 0;
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}
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static int
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nfp_flower_compile_port(struct nfp_flower_in_port *frame, u32 cmsg_port,
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bool mask_version)
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{
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if (mask_version) {
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frame->in_port = cpu_to_be32(~0);
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return 0;
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}
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frame->in_port = cpu_to_be32(cmsg_port);
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return 0;
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}
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static void
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nfp_flower_compile_mac(struct nfp_flower_mac_mpls *frame,
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struct tc_cls_flower_offload *flow,
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bool mask_version)
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{
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struct fl_flow_key *target = mask_version ? flow->mask : flow->key;
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struct flow_dissector_key_eth_addrs *flow_mac;
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flow_mac = skb_flow_dissector_target(flow->dissector,
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FLOW_DISSECTOR_KEY_ETH_ADDRS,
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target);
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memset(frame, 0, sizeof(struct nfp_flower_mac_mpls));
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/* Populate mac frame. */
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ether_addr_copy(frame->mac_dst, &flow_mac->dst[0]);
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ether_addr_copy(frame->mac_src, &flow_mac->src[0]);
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if (mask_version)
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frame->mpls_lse = cpu_to_be32(~0);
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}
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static void
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nfp_flower_compile_tport(struct nfp_flower_tp_ports *frame,
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struct tc_cls_flower_offload *flow,
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bool mask_version)
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{
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struct fl_flow_key *target = mask_version ? flow->mask : flow->key;
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struct flow_dissector_key_ports *flow_tp;
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flow_tp = skb_flow_dissector_target(flow->dissector,
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FLOW_DISSECTOR_KEY_PORTS,
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target);
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frame->port_src = flow_tp->src;
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frame->port_dst = flow_tp->dst;
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}
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static void
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nfp_flower_compile_ipv4(struct nfp_flower_ipv4 *frame,
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struct tc_cls_flower_offload *flow,
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bool mask_version)
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{
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struct fl_flow_key *target = mask_version ? flow->mask : flow->key;
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struct flow_dissector_key_ipv4_addrs *flow_ipv4;
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struct flow_dissector_key_basic *flow_basic;
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flow_ipv4 = skb_flow_dissector_target(flow->dissector,
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FLOW_DISSECTOR_KEY_IPV4_ADDRS,
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target);
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flow_basic = skb_flow_dissector_target(flow->dissector,
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FLOW_DISSECTOR_KEY_BASIC,
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target);
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/* Populate IPv4 frame. */
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frame->reserved = 0;
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frame->ipv4_src = flow_ipv4->src;
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frame->ipv4_dst = flow_ipv4->dst;
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frame->proto = flow_basic->ip_proto;
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/* Wildcard TOS/TTL for now. */
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frame->tos = 0;
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frame->ttl = 0;
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}
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static void
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nfp_flower_compile_ipv6(struct nfp_flower_ipv6 *frame,
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struct tc_cls_flower_offload *flow,
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bool mask_version)
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{
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struct fl_flow_key *target = mask_version ? flow->mask : flow->key;
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struct flow_dissector_key_ipv6_addrs *flow_ipv6;
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struct flow_dissector_key_basic *flow_basic;
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flow_ipv6 = skb_flow_dissector_target(flow->dissector,
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FLOW_DISSECTOR_KEY_IPV6_ADDRS,
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target);
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flow_basic = skb_flow_dissector_target(flow->dissector,
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FLOW_DISSECTOR_KEY_BASIC,
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target);
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/* Populate IPv6 frame. */
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frame->reserved = 0;
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frame->ipv6_src = flow_ipv6->src;
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frame->ipv6_dst = flow_ipv6->dst;
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frame->proto = flow_basic->ip_proto;
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/* Wildcard LABEL/TOS/TTL for now. */
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frame->ipv6_flow_label_exthdr = 0;
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frame->tos = 0;
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frame->ttl = 0;
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}
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int nfp_flower_compile_flow_match(struct tc_cls_flower_offload *flow,
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struct nfp_fl_key_ls *key_ls,
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struct net_device *netdev,
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struct nfp_fl_payload *nfp_flow)
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{
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int err;
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u8 *ext;
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u8 *msk;
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memset(nfp_flow->unmasked_data, 0, key_ls->key_size);
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memset(nfp_flow->mask_data, 0, key_ls->key_size);
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ext = nfp_flow->unmasked_data;
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msk = nfp_flow->mask_data;
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if (NFP_FLOWER_LAYER_PORT & key_ls->key_layer) {
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/* Populate Exact Metadata. */
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nfp_flower_compile_meta_tci((struct nfp_flower_meta_two *)ext,
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flow, key_ls->key_layer, false);
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/* Populate Mask Metadata. */
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nfp_flower_compile_meta_tci((struct nfp_flower_meta_two *)msk,
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flow, key_ls->key_layer, true);
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ext += sizeof(struct nfp_flower_meta_two);
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msk += sizeof(struct nfp_flower_meta_two);
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/* Populate Exact Port data. */
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err = nfp_flower_compile_port((struct nfp_flower_in_port *)ext,
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nfp_repr_get_port_id(netdev),
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false);
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if (err)
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return err;
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/* Populate Mask Port Data. */
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err = nfp_flower_compile_port((struct nfp_flower_in_port *)msk,
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nfp_repr_get_port_id(netdev),
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true);
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if (err)
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return err;
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ext += sizeof(struct nfp_flower_in_port);
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msk += sizeof(struct nfp_flower_in_port);
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} else {
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/* Populate Exact Metadata. */
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nfp_flower_compile_meta((struct nfp_flower_meta_one *)ext,
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key_ls->key_layer);
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/* Populate Mask Metadata. */
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nfp_flower_compile_meta((struct nfp_flower_meta_one *)msk,
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key_ls->key_layer);
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ext += sizeof(struct nfp_flower_meta_one);
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msk += sizeof(struct nfp_flower_meta_one);
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}
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if (NFP_FLOWER_LAYER_META & key_ls->key_layer) {
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/* Additional Metadata Fields.
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* Currently unsupported.
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*/
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return -EOPNOTSUPP;
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}
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if (NFP_FLOWER_LAYER_MAC & key_ls->key_layer) {
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/* Populate Exact MAC Data. */
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nfp_flower_compile_mac((struct nfp_flower_mac_mpls *)ext,
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flow, false);
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/* Populate Mask MAC Data. */
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nfp_flower_compile_mac((struct nfp_flower_mac_mpls *)msk,
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flow, true);
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ext += sizeof(struct nfp_flower_mac_mpls);
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msk += sizeof(struct nfp_flower_mac_mpls);
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}
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if (NFP_FLOWER_LAYER_TP & key_ls->key_layer) {
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/* Populate Exact TP Data. */
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nfp_flower_compile_tport((struct nfp_flower_tp_ports *)ext,
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flow, false);
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/* Populate Mask TP Data. */
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nfp_flower_compile_tport((struct nfp_flower_tp_ports *)msk,
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flow, true);
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ext += sizeof(struct nfp_flower_tp_ports);
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msk += sizeof(struct nfp_flower_tp_ports);
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}
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if (NFP_FLOWER_LAYER_IPV4 & key_ls->key_layer) {
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/* Populate Exact IPv4 Data. */
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nfp_flower_compile_ipv4((struct nfp_flower_ipv4 *)ext,
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flow, false);
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/* Populate Mask IPv4 Data. */
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nfp_flower_compile_ipv4((struct nfp_flower_ipv4 *)msk,
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flow, true);
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ext += sizeof(struct nfp_flower_ipv4);
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msk += sizeof(struct nfp_flower_ipv4);
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}
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if (NFP_FLOWER_LAYER_IPV6 & key_ls->key_layer) {
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/* Populate Exact IPv4 Data. */
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nfp_flower_compile_ipv6((struct nfp_flower_ipv6 *)ext,
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flow, false);
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/* Populate Mask IPv4 Data. */
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nfp_flower_compile_ipv6((struct nfp_flower_ipv6 *)msk,
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flow, true);
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ext += sizeof(struct nfp_flower_ipv6);
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msk += sizeof(struct nfp_flower_ipv6);
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}
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return 0;
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}
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@ -208,13 +208,17 @@ nfp_flower_add_offload(struct nfp_app *app, struct net_device *netdev,
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goto err_free_key_ls;
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}
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err = nfp_flower_compile_flow_match(flow, key_layer, netdev, flow_pay);
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if (err)
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goto err_destroy_flow;
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/* TODO: Complete flower_add_offload. */
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err = -EOPNOTSUPP;
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err_destroy_flow:
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kfree(flow_pay->mask_data);
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kfree(flow_pay->unmasked_data);
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kfree(flow_pay);
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err_free_key_ls:
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kfree(key_layer);
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return err;
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@ -38,6 +38,8 @@ struct metadata_dst;
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struct nfp_net;
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struct nfp_port;
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#include <net/dst_metadata.h>
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/**
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* struct nfp_reprs - container for representor netdevs
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* @num_reprs: Number of elements in reprs array
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@ -104,6 +106,13 @@ static inline bool nfp_netdev_is_nfp_repr(struct net_device *netdev)
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return netdev->netdev_ops == &nfp_repr_netdev_ops;
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}
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static inline int nfp_repr_get_port_id(struct net_device *netdev)
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{
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struct nfp_repr *priv = netdev_priv(netdev);
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return priv->dst->u.port_info.port_id;
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}
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void nfp_repr_inc_rx_stats(struct net_device *netdev, unsigned int len);
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int nfp_repr_init(struct nfp_app *app, struct net_device *netdev,
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u32 cmsg_port_id, struct nfp_port *port,
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