diff options
Diffstat (limited to 'net/ipv6/seg6_local.c')
| -rw-r--r-- | net/ipv6/seg6_local.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/net/ipv6/seg6_local.c b/net/ipv6/seg6_local.c index 24c2616c8c11..b07f7c1c82a4 100644 --- a/net/ipv6/seg6_local.c +++ b/net/ipv6/seg6_local.c @@ -497,6 +497,10 @@ static int __seg6_end_dt_vrf_build(struct seg6_local_lwt *slwt, const void *cfg, info->proto = htons(ETH_P_IP); info->hdrlen = sizeof(struct iphdr); break; + case AF_INET6: + info->proto = htons(ETH_P_IPV6); + info->hdrlen = sizeof(struct ipv6hdr); + break; default: return -EINVAL; } @@ -649,6 +653,47 @@ static int seg6_end_dt4_build(struct seg6_local_lwt *slwt, const void *cfg, { return __seg6_end_dt_vrf_build(slwt, cfg, AF_INET, extack); } + +static enum +seg6_end_dt_mode seg6_end_dt6_parse_mode(struct seg6_local_lwt *slwt) +{ + unsigned long parsed_optattrs = slwt->parsed_optattrs; + bool legacy, vrfmode; + + legacy = !!(parsed_optattrs & (1 << SEG6_LOCAL_TABLE)); + vrfmode = !!(parsed_optattrs & (1 << SEG6_LOCAL_VRFTABLE)); + + if (!(legacy ^ vrfmode)) + /* both are absent or present: invalid DT6 mode */ + return DT_INVALID_MODE; + + return legacy ? DT_LEGACY_MODE : DT_VRF_MODE; +} + +static enum seg6_end_dt_mode seg6_end_dt6_get_mode(struct seg6_local_lwt *slwt) +{ + struct seg6_end_dt_info *info = &slwt->dt_info; + + return info->mode; +} + +static int seg6_end_dt6_build(struct seg6_local_lwt *slwt, const void *cfg, + struct netlink_ext_ack *extack) +{ + enum seg6_end_dt_mode mode = seg6_end_dt6_parse_mode(slwt); + struct seg6_end_dt_info *info = &slwt->dt_info; + + switch (mode) { + case DT_LEGACY_MODE: + info->mode = DT_LEGACY_MODE; + return 0; + case DT_VRF_MODE: + return __seg6_end_dt_vrf_build(slwt, cfg, AF_INET6, extack); + default: + NL_SET_ERR_MSG(extack, "table or vrftable must be specified"); + return -EINVAL; + } +} #endif static int input_action_end_dt6(struct sk_buff *skb, @@ -660,6 +705,28 @@ static int input_action_end_dt6(struct sk_buff *skb, if (!pskb_may_pull(skb, sizeof(struct ipv6hdr))) goto drop; +#ifdef CONFIG_NET_L3_MASTER_DEV + if (seg6_end_dt6_get_mode(slwt) == DT_LEGACY_MODE) + goto legacy_mode; + + /* DT6_VRF_MODE */ + skb = end_dt_vrf_core(skb, slwt); + if (!skb) + /* packet has been processed and consumed by the VRF */ + return 0; + + if (IS_ERR(skb)) + return PTR_ERR(skb); + + /* note: this time we do not need to specify the table because the VRF + * takes care of selecting the correct table. + */ + seg6_lookup_any_nexthop(skb, NULL, 0, true); + + return dst_input(skb); + +legacy_mode: +#endif skb_set_transport_header(skb, sizeof(struct ipv6hdr)); seg6_lookup_any_nexthop(skb, NULL, slwt->table, true); @@ -851,7 +918,16 @@ static struct seg6_action_desc seg6_action_table[] = { }, { .action = SEG6_LOCAL_ACTION_END_DT6, +#ifdef CONFIG_NET_L3_MASTER_DEV + .attrs = 0, + .optattrs = (1 << SEG6_LOCAL_TABLE) | + (1 << SEG6_LOCAL_VRFTABLE), + .slwt_ops = { + .build_state = seg6_end_dt6_build, + }, +#else .attrs = (1 << SEG6_LOCAL_TABLE), +#endif .input = input_action_end_dt6, }, { |