454 lines
14 KiB
C
454 lines
14 KiB
C
/*
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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_tci *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 fl_flow_key *target = mask_version ? flow->mask : flow->key;
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struct flow_dissector_key_vlan *flow_vlan;
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u16 tmp_tci;
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memset(frame, 0, sizeof(struct nfp_flower_meta_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 (dissector_uses_key(flow->dissector, FLOW_DISSECTOR_KEY_VLAN)) {
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flow_vlan = skb_flow_dissector_target(flow->dissector,
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FLOW_DISSECTOR_KEY_VLAN,
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target);
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/* Populate the tci field. */
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tmp_tci = NFP_FLOWER_MASK_VLAN_PRESENT;
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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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frame->tci = cpu_to_be16(tmp_tci);
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}
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}
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static void
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nfp_flower_compile_ext_meta(struct nfp_flower_ext_meta *frame, u32 key_ext)
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{
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frame->nfp_flow_key_layer2 = cpu_to_be32(key_ext);
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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, enum nfp_flower_tun_type tun_type)
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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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if (tun_type)
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frame->in_port = cpu_to_be32(NFP_FL_PORT_TYPE_TUN | tun_type);
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else
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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 *addr;
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memset(frame, 0, sizeof(struct nfp_flower_mac_mpls));
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if (dissector_uses_key(flow->dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
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addr = skb_flow_dissector_target(flow->dissector,
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FLOW_DISSECTOR_KEY_ETH_ADDRS,
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target);
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/* Populate mac frame. */
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ether_addr_copy(frame->mac_dst, &addr->dst[0]);
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ether_addr_copy(frame->mac_src, &addr->src[0]);
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}
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if (dissector_uses_key(flow->dissector, FLOW_DISSECTOR_KEY_MPLS)) {
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struct flow_dissector_key_mpls *mpls;
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u32 t_mpls;
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mpls = skb_flow_dissector_target(flow->dissector,
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FLOW_DISSECTOR_KEY_MPLS,
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target);
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t_mpls = FIELD_PREP(NFP_FLOWER_MASK_MPLS_LB, mpls->mpls_label) |
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FIELD_PREP(NFP_FLOWER_MASK_MPLS_TC, mpls->mpls_tc) |
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FIELD_PREP(NFP_FLOWER_MASK_MPLS_BOS, mpls->mpls_bos) |
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NFP_FLOWER_MASK_MPLS_Q;
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frame->mpls_lse = cpu_to_be32(t_mpls);
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} else if (dissector_uses_key(flow->dissector,
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FLOW_DISSECTOR_KEY_BASIC)) {
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/* Check for mpls ether type and set NFP_FLOWER_MASK_MPLS_Q
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* bit, which indicates an mpls ether type but without any
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* mpls fields.
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*/
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struct flow_dissector_key_basic *key_basic;
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key_basic = skb_flow_dissector_target(flow->dissector,
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FLOW_DISSECTOR_KEY_BASIC,
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flow->key);
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if (key_basic->n_proto == cpu_to_be16(ETH_P_MPLS_UC) ||
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key_basic->n_proto == cpu_to_be16(ETH_P_MPLS_MC))
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frame->mpls_lse = cpu_to_be32(NFP_FLOWER_MASK_MPLS_Q);
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}
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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 *tp;
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memset(frame, 0, sizeof(struct nfp_flower_tp_ports));
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if (dissector_uses_key(flow->dissector, FLOW_DISSECTOR_KEY_PORTS)) {
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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 = tp->src;
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frame->port_dst = tp->dst;
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}
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}
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static void
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nfp_flower_compile_ip_ext(struct nfp_flower_ip_ext *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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if (dissector_uses_key(flow->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
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struct flow_dissector_key_basic *basic;
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basic = skb_flow_dissector_target(flow->dissector,
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FLOW_DISSECTOR_KEY_BASIC,
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target);
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frame->proto = basic->ip_proto;
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}
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if (dissector_uses_key(flow->dissector, FLOW_DISSECTOR_KEY_IP)) {
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struct flow_dissector_key_ip *flow_ip;
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flow_ip = skb_flow_dissector_target(flow->dissector,
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FLOW_DISSECTOR_KEY_IP,
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target);
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frame->tos = flow_ip->tos;
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frame->ttl = flow_ip->ttl;
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}
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if (dissector_uses_key(flow->dissector, FLOW_DISSECTOR_KEY_TCP)) {
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struct flow_dissector_key_tcp *tcp;
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u32 tcp_flags;
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tcp = skb_flow_dissector_target(flow->dissector,
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FLOW_DISSECTOR_KEY_TCP, target);
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tcp_flags = be16_to_cpu(tcp->flags);
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if (tcp_flags & TCPHDR_FIN)
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frame->flags |= NFP_FL_TCP_FLAG_FIN;
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if (tcp_flags & TCPHDR_SYN)
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frame->flags |= NFP_FL_TCP_FLAG_SYN;
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if (tcp_flags & TCPHDR_RST)
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frame->flags |= NFP_FL_TCP_FLAG_RST;
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if (tcp_flags & TCPHDR_PSH)
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frame->flags |= NFP_FL_TCP_FLAG_PSH;
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if (tcp_flags & TCPHDR_URG)
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frame->flags |= NFP_FL_TCP_FLAG_URG;
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}
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if (dissector_uses_key(flow->dissector, FLOW_DISSECTOR_KEY_CONTROL)) {
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struct flow_dissector_key_control *key;
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key = skb_flow_dissector_target(flow->dissector,
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FLOW_DISSECTOR_KEY_CONTROL,
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target);
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if (key->flags & FLOW_DIS_IS_FRAGMENT)
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frame->flags |= NFP_FL_IP_FRAGMENTED;
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if (key->flags & FLOW_DIS_FIRST_FRAG)
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frame->flags |= NFP_FL_IP_FRAG_FIRST;
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}
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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 *addr;
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memset(frame, 0, sizeof(struct nfp_flower_ipv4));
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if (dissector_uses_key(flow->dissector,
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FLOW_DISSECTOR_KEY_IPV4_ADDRS)) {
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addr = skb_flow_dissector_target(flow->dissector,
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FLOW_DISSECTOR_KEY_IPV4_ADDRS,
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target);
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frame->ipv4_src = addr->src;
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frame->ipv4_dst = addr->dst;
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}
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nfp_flower_compile_ip_ext(&frame->ip_ext, flow, mask_version);
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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 *addr;
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memset(frame, 0, sizeof(struct nfp_flower_ipv6));
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if (dissector_uses_key(flow->dissector,
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FLOW_DISSECTOR_KEY_IPV6_ADDRS)) {
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addr = skb_flow_dissector_target(flow->dissector,
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FLOW_DISSECTOR_KEY_IPV6_ADDRS,
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target);
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frame->ipv6_src = addr->src;
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frame->ipv6_dst = addr->dst;
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}
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nfp_flower_compile_ip_ext(&frame->ip_ext, flow, mask_version);
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}
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static int
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nfp_flower_compile_geneve_opt(void *key_buf, 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_enc_opts *opts;
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opts = skb_flow_dissector_target(flow->dissector,
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FLOW_DISSECTOR_KEY_ENC_OPTS,
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target);
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memcpy(key_buf, opts->data, opts->len);
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return 0;
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}
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static void
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nfp_flower_compile_ipv4_udp_tun(struct nfp_flower_ipv4_udp_tun *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 *tun_ips;
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struct flow_dissector_key_keyid *vni;
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struct flow_dissector_key_ip *ip;
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memset(frame, 0, sizeof(struct nfp_flower_ipv4_udp_tun));
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if (dissector_uses_key(flow->dissector,
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FLOW_DISSECTOR_KEY_ENC_KEYID)) {
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u32 temp_vni;
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vni = skb_flow_dissector_target(flow->dissector,
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FLOW_DISSECTOR_KEY_ENC_KEYID,
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target);
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temp_vni = be32_to_cpu(vni->keyid) << NFP_FL_TUN_VNI_OFFSET;
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frame->tun_id = cpu_to_be32(temp_vni);
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}
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if (dissector_uses_key(flow->dissector,
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FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS)) {
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tun_ips =
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skb_flow_dissector_target(flow->dissector,
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FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
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target);
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frame->ip_src = tun_ips->src;
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frame->ip_dst = tun_ips->dst;
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}
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if (dissector_uses_key(flow->dissector, FLOW_DISSECTOR_KEY_ENC_IP)) {
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ip = skb_flow_dissector_target(flow->dissector,
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FLOW_DISSECTOR_KEY_ENC_IP,
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target);
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frame->tos = ip->tos;
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frame->ttl = ip->ttl;
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}
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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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enum nfp_flower_tun_type tun_type)
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{
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struct nfp_repr *netdev_repr;
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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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/* Populate Exact Metadata. */
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nfp_flower_compile_meta_tci((struct nfp_flower_meta_tci *)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_tci *)msk,
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flow, key_ls->key_layer, true);
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ext += sizeof(struct nfp_flower_meta_tci);
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msk += sizeof(struct nfp_flower_meta_tci);
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/* Populate Extended Metadata if Required. */
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if (NFP_FLOWER_LAYER_EXT_META & key_ls->key_layer) {
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nfp_flower_compile_ext_meta((struct nfp_flower_ext_meta *)ext,
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key_ls->key_layer_two);
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nfp_flower_compile_ext_meta((struct nfp_flower_ext_meta *)msk,
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key_ls->key_layer_two);
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ext += sizeof(struct nfp_flower_ext_meta);
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msk += sizeof(struct nfp_flower_ext_meta);
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}
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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, tun_type);
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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, tun_type);
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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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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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if (key_ls->key_layer & NFP_FLOWER_LAYER_VXLAN ||
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key_ls->key_layer_two & NFP_FLOWER_LAYER2_GENEVE) {
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__be32 tun_dst;
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/* Populate Exact VXLAN Data. */
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nfp_flower_compile_ipv4_udp_tun((void *)ext, flow, false);
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/* Populate Mask VXLAN Data. */
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nfp_flower_compile_ipv4_udp_tun((void *)msk, flow, true);
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tun_dst = ((struct nfp_flower_ipv4_udp_tun *)ext)->ip_dst;
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ext += sizeof(struct nfp_flower_ipv4_udp_tun);
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msk += sizeof(struct nfp_flower_ipv4_udp_tun);
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/* Configure tunnel end point MAC. */
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if (nfp_netdev_is_nfp_repr(netdev)) {
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netdev_repr = netdev_priv(netdev);
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nfp_tunnel_write_macs(netdev_repr->app);
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/* Store the tunnel destination in the rule data.
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* This must be present and be an exact match.
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*/
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nfp_flow->nfp_tun_ipv4_addr = tun_dst;
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nfp_tunnel_add_ipv4_off(netdev_repr->app, tun_dst);
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}
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if (key_ls->key_layer_two & NFP_FLOWER_LAYER2_GENEVE_OP) {
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err = nfp_flower_compile_geneve_opt(ext, flow, false);
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if (err)
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return err;
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err = nfp_flower_compile_geneve_opt(msk, flow, true);
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if (err)
|
|
return err;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|