677 lines
20 KiB
C
677 lines
20 KiB
C
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// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
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/* Copyright (c) 2017-2018 Mellanox Technologies. All rights reserved */
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#include <net/ip_tunnels.h>
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#include <net/ip6_tunnel.h>
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#include <net/inet_ecn.h>
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#include "spectrum_ipip.h"
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#include "reg.h"
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struct ip_tunnel_parm
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mlxsw_sp_ipip_netdev_parms4(const struct net_device *ol_dev)
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{
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struct ip_tunnel *tun = netdev_priv(ol_dev);
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return tun->parms;
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}
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struct __ip6_tnl_parm
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mlxsw_sp_ipip_netdev_parms6(const struct net_device *ol_dev)
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{
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struct ip6_tnl *tun = netdev_priv(ol_dev);
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return tun->parms;
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}
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static bool mlxsw_sp_ipip_parms4_has_ikey(const struct ip_tunnel_parm *parms)
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{
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return !!(parms->i_flags & TUNNEL_KEY);
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}
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static bool mlxsw_sp_ipip_parms6_has_ikey(const struct __ip6_tnl_parm *parms)
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{
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return !!(parms->i_flags & TUNNEL_KEY);
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}
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static bool mlxsw_sp_ipip_parms4_has_okey(const struct ip_tunnel_parm *parms)
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{
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return !!(parms->o_flags & TUNNEL_KEY);
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}
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static bool mlxsw_sp_ipip_parms6_has_okey(const struct __ip6_tnl_parm *parms)
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{
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return !!(parms->o_flags & TUNNEL_KEY);
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}
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static u32 mlxsw_sp_ipip_parms4_ikey(const struct ip_tunnel_parm *parms)
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{
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return mlxsw_sp_ipip_parms4_has_ikey(parms) ?
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be32_to_cpu(parms->i_key) : 0;
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}
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static u32 mlxsw_sp_ipip_parms6_ikey(const struct __ip6_tnl_parm *parms)
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{
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return mlxsw_sp_ipip_parms6_has_ikey(parms) ?
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be32_to_cpu(parms->i_key) : 0;
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}
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static u32 mlxsw_sp_ipip_parms4_okey(const struct ip_tunnel_parm *parms)
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{
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return mlxsw_sp_ipip_parms4_has_okey(parms) ?
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be32_to_cpu(parms->o_key) : 0;
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}
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static u32 mlxsw_sp_ipip_parms6_okey(const struct __ip6_tnl_parm *parms)
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{
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return mlxsw_sp_ipip_parms6_has_okey(parms) ?
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be32_to_cpu(parms->o_key) : 0;
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}
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static union mlxsw_sp_l3addr
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mlxsw_sp_ipip_parms4_saddr(const struct ip_tunnel_parm *parms)
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{
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return (union mlxsw_sp_l3addr) { .addr4 = parms->iph.saddr };
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}
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static union mlxsw_sp_l3addr
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mlxsw_sp_ipip_parms6_saddr(const struct __ip6_tnl_parm *parms)
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{
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return (union mlxsw_sp_l3addr) { .addr6 = parms->laddr };
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}
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static union mlxsw_sp_l3addr
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mlxsw_sp_ipip_parms4_daddr(const struct ip_tunnel_parm *parms)
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{
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return (union mlxsw_sp_l3addr) { .addr4 = parms->iph.daddr };
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}
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static union mlxsw_sp_l3addr
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mlxsw_sp_ipip_parms6_daddr(const struct __ip6_tnl_parm *parms)
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{
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return (union mlxsw_sp_l3addr) { .addr6 = parms->raddr };
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}
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union mlxsw_sp_l3addr
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mlxsw_sp_ipip_netdev_saddr(enum mlxsw_sp_l3proto proto,
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const struct net_device *ol_dev)
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{
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struct ip_tunnel_parm parms4;
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struct __ip6_tnl_parm parms6;
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switch (proto) {
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case MLXSW_SP_L3_PROTO_IPV4:
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parms4 = mlxsw_sp_ipip_netdev_parms4(ol_dev);
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return mlxsw_sp_ipip_parms4_saddr(&parms4);
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case MLXSW_SP_L3_PROTO_IPV6:
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parms6 = mlxsw_sp_ipip_netdev_parms6(ol_dev);
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return mlxsw_sp_ipip_parms6_saddr(&parms6);
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}
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WARN_ON(1);
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return (union mlxsw_sp_l3addr) {0};
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}
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static __be32 mlxsw_sp_ipip_netdev_daddr4(const struct net_device *ol_dev)
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{
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struct ip_tunnel_parm parms4 = mlxsw_sp_ipip_netdev_parms4(ol_dev);
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return mlxsw_sp_ipip_parms4_daddr(&parms4).addr4;
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}
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static union mlxsw_sp_l3addr
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mlxsw_sp_ipip_netdev_daddr(enum mlxsw_sp_l3proto proto,
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const struct net_device *ol_dev)
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{
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struct ip_tunnel_parm parms4;
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struct __ip6_tnl_parm parms6;
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switch (proto) {
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case MLXSW_SP_L3_PROTO_IPV4:
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parms4 = mlxsw_sp_ipip_netdev_parms4(ol_dev);
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return mlxsw_sp_ipip_parms4_daddr(&parms4);
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case MLXSW_SP_L3_PROTO_IPV6:
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parms6 = mlxsw_sp_ipip_netdev_parms6(ol_dev);
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return mlxsw_sp_ipip_parms6_daddr(&parms6);
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}
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WARN_ON(1);
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return (union mlxsw_sp_l3addr) {0};
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}
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bool mlxsw_sp_l3addr_is_zero(union mlxsw_sp_l3addr addr)
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{
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union mlxsw_sp_l3addr naddr = {0};
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return !memcmp(&addr, &naddr, sizeof(naddr));
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}
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static struct mlxsw_sp_ipip_parms
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mlxsw_sp_ipip_netdev_parms_init_gre4(const struct net_device *ol_dev)
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{
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struct ip_tunnel_parm parms = mlxsw_sp_ipip_netdev_parms4(ol_dev);
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return (struct mlxsw_sp_ipip_parms) {
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.proto = MLXSW_SP_L3_PROTO_IPV4,
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.saddr = mlxsw_sp_ipip_parms4_saddr(&parms),
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.daddr = mlxsw_sp_ipip_parms4_daddr(&parms),
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.link = parms.link,
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.ikey = mlxsw_sp_ipip_parms4_ikey(&parms),
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.okey = mlxsw_sp_ipip_parms4_okey(&parms),
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};
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}
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static int
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mlxsw_sp_ipip_nexthop_update_gre4(struct mlxsw_sp *mlxsw_sp, u32 adj_index,
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struct mlxsw_sp_ipip_entry *ipip_entry,
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bool force, char *ratr_pl)
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{
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u16 rif_index = mlxsw_sp_ipip_lb_rif_index(ipip_entry->ol_lb);
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__be32 daddr4 = mlxsw_sp_ipip_netdev_daddr4(ipip_entry->ol_dev);
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enum mlxsw_reg_ratr_op op;
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op = force ? MLXSW_REG_RATR_OP_WRITE_WRITE_ENTRY :
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MLXSW_REG_RATR_OP_WRITE_WRITE_ENTRY_ON_ACTIVITY;
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mlxsw_reg_ratr_pack(ratr_pl, op, true, MLXSW_REG_RATR_TYPE_IPIP,
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adj_index, rif_index);
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mlxsw_reg_ratr_ipip4_entry_pack(ratr_pl, be32_to_cpu(daddr4));
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return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ratr), ratr_pl);
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}
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static int
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mlxsw_sp_ipip_decap_config_gre4(struct mlxsw_sp *mlxsw_sp,
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struct mlxsw_sp_ipip_entry *ipip_entry,
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u32 tunnel_index)
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{
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u16 rif_index = mlxsw_sp_ipip_lb_rif_index(ipip_entry->ol_lb);
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u16 ul_rif_id = mlxsw_sp_ipip_lb_ul_rif_id(ipip_entry->ol_lb);
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char rtdp_pl[MLXSW_REG_RTDP_LEN];
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struct ip_tunnel_parm parms;
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unsigned int type_check;
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bool has_ikey;
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u32 daddr4;
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u32 ikey;
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parms = mlxsw_sp_ipip_netdev_parms4(ipip_entry->ol_dev);
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has_ikey = mlxsw_sp_ipip_parms4_has_ikey(&parms);
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ikey = mlxsw_sp_ipip_parms4_ikey(&parms);
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mlxsw_reg_rtdp_pack(rtdp_pl, MLXSW_REG_RTDP_TYPE_IPIP, tunnel_index);
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mlxsw_reg_rtdp_egress_router_interface_set(rtdp_pl, ul_rif_id);
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type_check = has_ikey ?
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MLXSW_REG_RTDP_IPIP_TYPE_CHECK_ALLOW_GRE_KEY :
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MLXSW_REG_RTDP_IPIP_TYPE_CHECK_ALLOW_GRE;
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/* Linux demuxes tunnels based on packet SIP (which must match tunnel
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* remote IP). Thus configure decap so that it filters out packets that
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* are not IPv4 or have the wrong SIP. IPIP_DECAP_ERROR trap is
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* generated for packets that fail this criterion. Linux then handles
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* such packets in slow path and generates ICMP destination unreachable.
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*/
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daddr4 = be32_to_cpu(mlxsw_sp_ipip_netdev_daddr4(ipip_entry->ol_dev));
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mlxsw_reg_rtdp_ipip4_pack(rtdp_pl, rif_index,
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MLXSW_REG_RTDP_IPIP_SIP_CHECK_FILTER_IPV4,
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type_check, has_ikey, daddr4, ikey);
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return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rtdp), rtdp_pl);
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}
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static bool mlxsw_sp_ipip_tunnel_complete(enum mlxsw_sp_l3proto proto,
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const struct net_device *ol_dev)
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{
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union mlxsw_sp_l3addr saddr = mlxsw_sp_ipip_netdev_saddr(proto, ol_dev);
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union mlxsw_sp_l3addr daddr = mlxsw_sp_ipip_netdev_daddr(proto, ol_dev);
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/* Tunnels with unset local or remote address are valid in Linux and
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* used for lightweight tunnels (LWT) and Non-Broadcast Multi-Access
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* (NBMA) tunnels. In principle these can be offloaded, but the driver
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* currently doesn't support this. So punt.
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*/
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return !mlxsw_sp_l3addr_is_zero(saddr) &&
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!mlxsw_sp_l3addr_is_zero(daddr);
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}
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static bool mlxsw_sp_ipip_can_offload_gre4(const struct mlxsw_sp *mlxsw_sp,
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const struct net_device *ol_dev)
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{
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struct ip_tunnel *tunnel = netdev_priv(ol_dev);
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__be16 okflags = TUNNEL_KEY; /* We can't offload any other features. */
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bool inherit_ttl = tunnel->parms.iph.ttl == 0;
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bool inherit_tos = tunnel->parms.iph.tos & 0x1;
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return (tunnel->parms.i_flags & ~okflags) == 0 &&
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(tunnel->parms.o_flags & ~okflags) == 0 &&
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inherit_ttl && inherit_tos &&
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mlxsw_sp_ipip_tunnel_complete(MLXSW_SP_L3_PROTO_IPV4, ol_dev);
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}
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static struct mlxsw_sp_rif_ipip_lb_config
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mlxsw_sp_ipip_ol_loopback_config_gre4(struct mlxsw_sp *mlxsw_sp,
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const struct net_device *ol_dev)
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{
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struct ip_tunnel_parm parms = mlxsw_sp_ipip_netdev_parms4(ol_dev);
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enum mlxsw_reg_ritr_loopback_ipip_type lb_ipipt;
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lb_ipipt = mlxsw_sp_ipip_parms4_has_okey(&parms) ?
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MLXSW_REG_RITR_LOOPBACK_IPIP_TYPE_IP_IN_GRE_KEY_IN_IP :
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MLXSW_REG_RITR_LOOPBACK_IPIP_TYPE_IP_IN_GRE_IN_IP;
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return (struct mlxsw_sp_rif_ipip_lb_config){
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.lb_ipipt = lb_ipipt,
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.okey = mlxsw_sp_ipip_parms4_okey(&parms),
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.ul_protocol = MLXSW_SP_L3_PROTO_IPV4,
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.saddr = mlxsw_sp_ipip_netdev_saddr(MLXSW_SP_L3_PROTO_IPV4,
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ol_dev),
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};
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}
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static int
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mlxsw_sp_ipip_ol_netdev_change_gre(struct mlxsw_sp *mlxsw_sp,
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struct mlxsw_sp_ipip_entry *ipip_entry,
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const struct mlxsw_sp_ipip_parms *new_parms,
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struct netlink_ext_ack *extack)
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{
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const struct mlxsw_sp_ipip_parms *old_parms = &ipip_entry->parms;
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bool update_tunnel = false;
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bool update_decap = false;
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bool update_nhs = false;
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int err = 0;
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if (!mlxsw_sp_l3addr_eq(&new_parms->saddr, &old_parms->saddr)) {
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u16 ul_tb_id = mlxsw_sp_ipip_dev_ul_tb_id(ipip_entry->ol_dev);
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/* Since the local address has changed, if there is another
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* tunnel with a matching saddr, both need to be demoted.
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*/
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if (mlxsw_sp_ipip_demote_tunnel_by_saddr(mlxsw_sp,
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new_parms->proto,
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new_parms->saddr,
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ul_tb_id,
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ipip_entry)) {
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mlxsw_sp_ipip_entry_demote_tunnel(mlxsw_sp, ipip_entry);
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return 0;
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}
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update_tunnel = true;
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} else if (old_parms->okey != new_parms->okey ||
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old_parms->link != new_parms->link) {
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update_tunnel = true;
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} else if (!mlxsw_sp_l3addr_eq(&new_parms->daddr, &old_parms->daddr)) {
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update_nhs = true;
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} else if (old_parms->ikey != new_parms->ikey) {
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update_decap = true;
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}
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if (update_tunnel)
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err = __mlxsw_sp_ipip_entry_update_tunnel(mlxsw_sp, ipip_entry,
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true, true, true,
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extack);
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else if (update_nhs)
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err = __mlxsw_sp_ipip_entry_update_tunnel(mlxsw_sp, ipip_entry,
|
||
|
|
false, false, true,
|
||
|
|
extack);
|
||
|
|
else if (update_decap)
|
||
|
|
err = __mlxsw_sp_ipip_entry_update_tunnel(mlxsw_sp, ipip_entry,
|
||
|
|
false, false, false,
|
||
|
|
extack);
|
||
|
|
if (err)
|
||
|
|
return err;
|
||
|
|
|
||
|
|
ipip_entry->parms = *new_parms;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
mlxsw_sp_ipip_ol_netdev_change_gre4(struct mlxsw_sp *mlxsw_sp,
|
||
|
|
struct mlxsw_sp_ipip_entry *ipip_entry,
|
||
|
|
struct netlink_ext_ack *extack)
|
||
|
|
{
|
||
|
|
struct mlxsw_sp_ipip_parms new_parms;
|
||
|
|
|
||
|
|
new_parms = mlxsw_sp_ipip_netdev_parms_init_gre4(ipip_entry->ol_dev);
|
||
|
|
return mlxsw_sp_ipip_ol_netdev_change_gre(mlxsw_sp, ipip_entry,
|
||
|
|
&new_parms, extack);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
mlxsw_sp_ipip_rem_addr_set_gre4(struct mlxsw_sp *mlxsw_sp,
|
||
|
|
struct mlxsw_sp_ipip_entry *ipip_entry)
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
mlxsw_sp_ipip_rem_addr_unset_gre4(struct mlxsw_sp *mlxsw_sp,
|
||
|
|
const struct mlxsw_sp_ipip_entry *ipip_entry)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct mlxsw_sp_ipip_ops mlxsw_sp_ipip_gre4_ops = {
|
||
|
|
.dev_type = ARPHRD_IPGRE,
|
||
|
|
.ul_proto = MLXSW_SP_L3_PROTO_IPV4,
|
||
|
|
.inc_parsing_depth = false,
|
||
|
|
.parms_init = mlxsw_sp_ipip_netdev_parms_init_gre4,
|
||
|
|
.nexthop_update = mlxsw_sp_ipip_nexthop_update_gre4,
|
||
|
|
.decap_config = mlxsw_sp_ipip_decap_config_gre4,
|
||
|
|
.can_offload = mlxsw_sp_ipip_can_offload_gre4,
|
||
|
|
.ol_loopback_config = mlxsw_sp_ipip_ol_loopback_config_gre4,
|
||
|
|
.ol_netdev_change = mlxsw_sp_ipip_ol_netdev_change_gre4,
|
||
|
|
.rem_ip_addr_set = mlxsw_sp_ipip_rem_addr_set_gre4,
|
||
|
|
.rem_ip_addr_unset = mlxsw_sp_ipip_rem_addr_unset_gre4,
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct mlxsw_sp_ipip_parms
|
||
|
|
mlxsw_sp1_ipip_netdev_parms_init_gre6(const struct net_device *ol_dev)
|
||
|
|
{
|
||
|
|
struct mlxsw_sp_ipip_parms parms = {0};
|
||
|
|
|
||
|
|
WARN_ON_ONCE(1);
|
||
|
|
return parms;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
mlxsw_sp1_ipip_nexthop_update_gre6(struct mlxsw_sp *mlxsw_sp, u32 adj_index,
|
||
|
|
struct mlxsw_sp_ipip_entry *ipip_entry,
|
||
|
|
bool force, char *ratr_pl)
|
||
|
|
{
|
||
|
|
WARN_ON_ONCE(1);
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
mlxsw_sp1_ipip_decap_config_gre6(struct mlxsw_sp *mlxsw_sp,
|
||
|
|
struct mlxsw_sp_ipip_entry *ipip_entry,
|
||
|
|
u32 tunnel_index)
|
||
|
|
{
|
||
|
|
WARN_ON_ONCE(1);
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
static bool mlxsw_sp1_ipip_can_offload_gre6(const struct mlxsw_sp *mlxsw_sp,
|
||
|
|
const struct net_device *ol_dev)
|
||
|
|
{
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct mlxsw_sp_rif_ipip_lb_config
|
||
|
|
mlxsw_sp1_ipip_ol_loopback_config_gre6(struct mlxsw_sp *mlxsw_sp,
|
||
|
|
const struct net_device *ol_dev)
|
||
|
|
{
|
||
|
|
struct mlxsw_sp_rif_ipip_lb_config config = {0};
|
||
|
|
|
||
|
|
WARN_ON_ONCE(1);
|
||
|
|
return config;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
mlxsw_sp1_ipip_ol_netdev_change_gre6(struct mlxsw_sp *mlxsw_sp,
|
||
|
|
struct mlxsw_sp_ipip_entry *ipip_entry,
|
||
|
|
struct netlink_ext_ack *extack)
|
||
|
|
{
|
||
|
|
WARN_ON_ONCE(1);
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
mlxsw_sp1_ipip_rem_addr_set_gre6(struct mlxsw_sp *mlxsw_sp,
|
||
|
|
struct mlxsw_sp_ipip_entry *ipip_entry)
|
||
|
|
{
|
||
|
|
WARN_ON_ONCE(1);
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
mlxsw_sp1_ipip_rem_addr_unset_gre6(struct mlxsw_sp *mlxsw_sp,
|
||
|
|
const struct mlxsw_sp_ipip_entry *ipip_entry)
|
||
|
|
{
|
||
|
|
WARN_ON_ONCE(1);
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct mlxsw_sp_ipip_ops mlxsw_sp1_ipip_gre6_ops = {
|
||
|
|
.dev_type = ARPHRD_IP6GRE,
|
||
|
|
.ul_proto = MLXSW_SP_L3_PROTO_IPV6,
|
||
|
|
.inc_parsing_depth = true,
|
||
|
|
.parms_init = mlxsw_sp1_ipip_netdev_parms_init_gre6,
|
||
|
|
.nexthop_update = mlxsw_sp1_ipip_nexthop_update_gre6,
|
||
|
|
.decap_config = mlxsw_sp1_ipip_decap_config_gre6,
|
||
|
|
.can_offload = mlxsw_sp1_ipip_can_offload_gre6,
|
||
|
|
.ol_loopback_config = mlxsw_sp1_ipip_ol_loopback_config_gre6,
|
||
|
|
.ol_netdev_change = mlxsw_sp1_ipip_ol_netdev_change_gre6,
|
||
|
|
.rem_ip_addr_set = mlxsw_sp1_ipip_rem_addr_set_gre6,
|
||
|
|
.rem_ip_addr_unset = mlxsw_sp1_ipip_rem_addr_unset_gre6,
|
||
|
|
};
|
||
|
|
|
||
|
|
const struct mlxsw_sp_ipip_ops *mlxsw_sp1_ipip_ops_arr[] = {
|
||
|
|
[MLXSW_SP_IPIP_TYPE_GRE4] = &mlxsw_sp_ipip_gre4_ops,
|
||
|
|
[MLXSW_SP_IPIP_TYPE_GRE6] = &mlxsw_sp1_ipip_gre6_ops,
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct mlxsw_sp_ipip_parms
|
||
|
|
mlxsw_sp2_ipip_netdev_parms_init_gre6(const struct net_device *ol_dev)
|
||
|
|
{
|
||
|
|
struct __ip6_tnl_parm parms = mlxsw_sp_ipip_netdev_parms6(ol_dev);
|
||
|
|
|
||
|
|
return (struct mlxsw_sp_ipip_parms) {
|
||
|
|
.proto = MLXSW_SP_L3_PROTO_IPV6,
|
||
|
|
.saddr = mlxsw_sp_ipip_parms6_saddr(&parms),
|
||
|
|
.daddr = mlxsw_sp_ipip_parms6_daddr(&parms),
|
||
|
|
.link = parms.link,
|
||
|
|
.ikey = mlxsw_sp_ipip_parms6_ikey(&parms),
|
||
|
|
.okey = mlxsw_sp_ipip_parms6_okey(&parms),
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
mlxsw_sp2_ipip_nexthop_update_gre6(struct mlxsw_sp *mlxsw_sp, u32 adj_index,
|
||
|
|
struct mlxsw_sp_ipip_entry *ipip_entry,
|
||
|
|
bool force, char *ratr_pl)
|
||
|
|
{
|
||
|
|
u16 rif_index = mlxsw_sp_ipip_lb_rif_index(ipip_entry->ol_lb);
|
||
|
|
enum mlxsw_reg_ratr_op op;
|
||
|
|
|
||
|
|
op = force ? MLXSW_REG_RATR_OP_WRITE_WRITE_ENTRY :
|
||
|
|
MLXSW_REG_RATR_OP_WRITE_WRITE_ENTRY_ON_ACTIVITY;
|
||
|
|
mlxsw_reg_ratr_pack(ratr_pl, op, true, MLXSW_REG_RATR_TYPE_IPIP,
|
||
|
|
adj_index, rif_index);
|
||
|
|
mlxsw_reg_ratr_ipip6_entry_pack(ratr_pl,
|
||
|
|
ipip_entry->dip_kvdl_index);
|
||
|
|
|
||
|
|
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ratr), ratr_pl);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
mlxsw_sp2_ipip_decap_config_gre6(struct mlxsw_sp *mlxsw_sp,
|
||
|
|
struct mlxsw_sp_ipip_entry *ipip_entry,
|
||
|
|
u32 tunnel_index)
|
||
|
|
{
|
||
|
|
u16 rif_index = mlxsw_sp_ipip_lb_rif_index(ipip_entry->ol_lb);
|
||
|
|
u16 ul_rif_id = mlxsw_sp_ipip_lb_ul_rif_id(ipip_entry->ol_lb);
|
||
|
|
char rtdp_pl[MLXSW_REG_RTDP_LEN];
|
||
|
|
struct __ip6_tnl_parm parms;
|
||
|
|
unsigned int type_check;
|
||
|
|
bool has_ikey;
|
||
|
|
u32 ikey;
|
||
|
|
|
||
|
|
parms = mlxsw_sp_ipip_netdev_parms6(ipip_entry->ol_dev);
|
||
|
|
has_ikey = mlxsw_sp_ipip_parms6_has_ikey(&parms);
|
||
|
|
ikey = mlxsw_sp_ipip_parms6_ikey(&parms);
|
||
|
|
|
||
|
|
mlxsw_reg_rtdp_pack(rtdp_pl, MLXSW_REG_RTDP_TYPE_IPIP, tunnel_index);
|
||
|
|
mlxsw_reg_rtdp_egress_router_interface_set(rtdp_pl, ul_rif_id);
|
||
|
|
|
||
|
|
type_check = has_ikey ?
|
||
|
|
MLXSW_REG_RTDP_IPIP_TYPE_CHECK_ALLOW_GRE_KEY :
|
||
|
|
MLXSW_REG_RTDP_IPIP_TYPE_CHECK_ALLOW_GRE;
|
||
|
|
|
||
|
|
/* Linux demuxes tunnels based on packet SIP (which must match tunnel
|
||
|
|
* remote IP). Thus configure decap so that it filters out packets that
|
||
|
|
* are not IPv6 or have the wrong SIP. IPIP_DECAP_ERROR trap is
|
||
|
|
* generated for packets that fail this criterion. Linux then handles
|
||
|
|
* such packets in slow path and generates ICMP destination unreachable.
|
||
|
|
*/
|
||
|
|
mlxsw_reg_rtdp_ipip6_pack(rtdp_pl, rif_index,
|
||
|
|
MLXSW_REG_RTDP_IPIP_SIP_CHECK_FILTER_IPV6,
|
||
|
|
type_check, has_ikey,
|
||
|
|
ipip_entry->dip_kvdl_index, ikey);
|
||
|
|
|
||
|
|
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rtdp), rtdp_pl);
|
||
|
|
}
|
||
|
|
|
||
|
|
static bool mlxsw_sp2_ipip_can_offload_gre6(const struct mlxsw_sp *mlxsw_sp,
|
||
|
|
const struct net_device *ol_dev)
|
||
|
|
{
|
||
|
|
struct __ip6_tnl_parm tparm = mlxsw_sp_ipip_netdev_parms6(ol_dev);
|
||
|
|
bool inherit_tos = tparm.flags & IP6_TNL_F_USE_ORIG_TCLASS;
|
||
|
|
bool inherit_ttl = tparm.hop_limit == 0;
|
||
|
|
__be16 okflags = TUNNEL_KEY; /* We can't offload any other features. */
|
||
|
|
|
||
|
|
return (tparm.i_flags & ~okflags) == 0 &&
|
||
|
|
(tparm.o_flags & ~okflags) == 0 &&
|
||
|
|
inherit_ttl && inherit_tos &&
|
||
|
|
mlxsw_sp_ipip_tunnel_complete(MLXSW_SP_L3_PROTO_IPV6, ol_dev);
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct mlxsw_sp_rif_ipip_lb_config
|
||
|
|
mlxsw_sp2_ipip_ol_loopback_config_gre6(struct mlxsw_sp *mlxsw_sp,
|
||
|
|
const struct net_device *ol_dev)
|
||
|
|
{
|
||
|
|
struct __ip6_tnl_parm parms = mlxsw_sp_ipip_netdev_parms6(ol_dev);
|
||
|
|
enum mlxsw_reg_ritr_loopback_ipip_type lb_ipipt;
|
||
|
|
|
||
|
|
lb_ipipt = mlxsw_sp_ipip_parms6_has_okey(&parms) ?
|
||
|
|
MLXSW_REG_RITR_LOOPBACK_IPIP_TYPE_IP_IN_GRE_KEY_IN_IP :
|
||
|
|
MLXSW_REG_RITR_LOOPBACK_IPIP_TYPE_IP_IN_GRE_IN_IP;
|
||
|
|
return (struct mlxsw_sp_rif_ipip_lb_config){
|
||
|
|
.lb_ipipt = lb_ipipt,
|
||
|
|
.okey = mlxsw_sp_ipip_parms6_okey(&parms),
|
||
|
|
.ul_protocol = MLXSW_SP_L3_PROTO_IPV6,
|
||
|
|
.saddr = mlxsw_sp_ipip_netdev_saddr(MLXSW_SP_L3_PROTO_IPV6,
|
||
|
|
ol_dev),
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
mlxsw_sp2_ipip_ol_netdev_change_gre6(struct mlxsw_sp *mlxsw_sp,
|
||
|
|
struct mlxsw_sp_ipip_entry *ipip_entry,
|
||
|
|
struct netlink_ext_ack *extack)
|
||
|
|
{
|
||
|
|
struct mlxsw_sp_ipip_parms new_parms;
|
||
|
|
|
||
|
|
new_parms = mlxsw_sp2_ipip_netdev_parms_init_gre6(ipip_entry->ol_dev);
|
||
|
|
return mlxsw_sp_ipip_ol_netdev_change_gre(mlxsw_sp, ipip_entry,
|
||
|
|
&new_parms, extack);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
mlxsw_sp2_ipip_rem_addr_set_gre6(struct mlxsw_sp *mlxsw_sp,
|
||
|
|
struct mlxsw_sp_ipip_entry *ipip_entry)
|
||
|
|
{
|
||
|
|
return mlxsw_sp_ipv6_addr_kvdl_index_get(mlxsw_sp,
|
||
|
|
&ipip_entry->parms.daddr.addr6,
|
||
|
|
&ipip_entry->dip_kvdl_index);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
mlxsw_sp2_ipip_rem_addr_unset_gre6(struct mlxsw_sp *mlxsw_sp,
|
||
|
|
const struct mlxsw_sp_ipip_entry *ipip_entry)
|
||
|
|
{
|
||
|
|
mlxsw_sp_ipv6_addr_put(mlxsw_sp, &ipip_entry->parms.daddr.addr6);
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct mlxsw_sp_ipip_ops mlxsw_sp2_ipip_gre6_ops = {
|
||
|
|
.dev_type = ARPHRD_IP6GRE,
|
||
|
|
.ul_proto = MLXSW_SP_L3_PROTO_IPV6,
|
||
|
|
.inc_parsing_depth = true,
|
||
|
|
.parms_init = mlxsw_sp2_ipip_netdev_parms_init_gre6,
|
||
|
|
.nexthop_update = mlxsw_sp2_ipip_nexthop_update_gre6,
|
||
|
|
.decap_config = mlxsw_sp2_ipip_decap_config_gre6,
|
||
|
|
.can_offload = mlxsw_sp2_ipip_can_offload_gre6,
|
||
|
|
.ol_loopback_config = mlxsw_sp2_ipip_ol_loopback_config_gre6,
|
||
|
|
.ol_netdev_change = mlxsw_sp2_ipip_ol_netdev_change_gre6,
|
||
|
|
.rem_ip_addr_set = mlxsw_sp2_ipip_rem_addr_set_gre6,
|
||
|
|
.rem_ip_addr_unset = mlxsw_sp2_ipip_rem_addr_unset_gre6,
|
||
|
|
};
|
||
|
|
|
||
|
|
const struct mlxsw_sp_ipip_ops *mlxsw_sp2_ipip_ops_arr[] = {
|
||
|
|
[MLXSW_SP_IPIP_TYPE_GRE4] = &mlxsw_sp_ipip_gre4_ops,
|
||
|
|
[MLXSW_SP_IPIP_TYPE_GRE6] = &mlxsw_sp2_ipip_gre6_ops,
|
||
|
|
};
|
||
|
|
|
||
|
|
static int mlxsw_sp_ipip_ecn_encap_init_one(struct mlxsw_sp *mlxsw_sp,
|
||
|
|
u8 inner_ecn, u8 outer_ecn)
|
||
|
|
{
|
||
|
|
char tieem_pl[MLXSW_REG_TIEEM_LEN];
|
||
|
|
|
||
|
|
mlxsw_reg_tieem_pack(tieem_pl, inner_ecn, outer_ecn);
|
||
|
|
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(tieem), tieem_pl);
|
||
|
|
}
|
||
|
|
|
||
|
|
int mlxsw_sp_ipip_ecn_encap_init(struct mlxsw_sp *mlxsw_sp)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
|
||
|
|
/* Iterate over inner ECN values */
|
||
|
|
for (i = INET_ECN_NOT_ECT; i <= INET_ECN_CE; i++) {
|
||
|
|
u8 outer_ecn = INET_ECN_encapsulate(0, i);
|
||
|
|
int err;
|
||
|
|
|
||
|
|
err = mlxsw_sp_ipip_ecn_encap_init_one(mlxsw_sp, i, outer_ecn);
|
||
|
|
if (err)
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int mlxsw_sp_ipip_ecn_decap_init_one(struct mlxsw_sp *mlxsw_sp,
|
||
|
|
u8 inner_ecn, u8 outer_ecn)
|
||
|
|
{
|
||
|
|
char tidem_pl[MLXSW_REG_TIDEM_LEN];
|
||
|
|
u8 new_inner_ecn;
|
||
|
|
bool trap_en;
|
||
|
|
|
||
|
|
new_inner_ecn = mlxsw_sp_tunnel_ecn_decap(outer_ecn, inner_ecn,
|
||
|
|
&trap_en);
|
||
|
|
mlxsw_reg_tidem_pack(tidem_pl, outer_ecn, inner_ecn, new_inner_ecn,
|
||
|
|
trap_en, trap_en ? MLXSW_TRAP_ID_DECAP_ECN0 : 0);
|
||
|
|
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(tidem), tidem_pl);
|
||
|
|
}
|
||
|
|
|
||
|
|
int mlxsw_sp_ipip_ecn_decap_init(struct mlxsw_sp *mlxsw_sp)
|
||
|
|
{
|
||
|
|
int i, j, err;
|
||
|
|
|
||
|
|
/* Iterate over inner ECN values */
|
||
|
|
for (i = INET_ECN_NOT_ECT; i <= INET_ECN_CE; i++) {
|
||
|
|
/* Iterate over outer ECN values */
|
||
|
|
for (j = INET_ECN_NOT_ECT; j <= INET_ECN_CE; j++) {
|
||
|
|
err = mlxsw_sp_ipip_ecn_decap_init_one(mlxsw_sp, i, j);
|
||
|
|
if (err)
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
struct net_device *
|
||
|
|
mlxsw_sp_ipip_netdev_ul_dev_get(const struct net_device *ol_dev)
|
||
|
|
{
|
||
|
|
struct net *net = dev_net(ol_dev);
|
||
|
|
struct ip_tunnel *tun4;
|
||
|
|
struct ip6_tnl *tun6;
|
||
|
|
|
||
|
|
switch (ol_dev->type) {
|
||
|
|
case ARPHRD_IPGRE:
|
||
|
|
tun4 = netdev_priv(ol_dev);
|
||
|
|
return dev_get_by_index_rcu(net, tun4->parms.link);
|
||
|
|
case ARPHRD_IP6GRE:
|
||
|
|
tun6 = netdev_priv(ol_dev);
|
||
|
|
return dev_get_by_index_rcu(net, tun6->parms.link);
|
||
|
|
default:
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
}
|