diff options
| author | David Ahern <dsahern@gmail.com> | 2019-05-24 14:43:07 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-05-28 21:37:30 -0700 |
| commit | b513bd035f4044aa2667fb01418918523a049b9c (patch) | |
| tree | d27fafed8b200920244132105257d9970b453865 | |
| parent | 53010f991a9f5e4ed2db705ddde6ff32709192a2 (diff) | |
nexthop: Add support for lwt encaps
Add support for NHA_ENCAP and NHA_ENCAP_TYPE. Leverages the existing code
for lwtunnel within fib_nh_common, so the only change needed is handling
the attributes in the nexthop code.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/net/nexthop.h | 3 | ||||
| -rw-r--r-- | net/ipv4/nexthop.c | 37 |
2 files changed, 39 insertions, 1 deletions
diff --git a/include/net/nexthop.h b/include/net/nexthop.h index d188f16c0c4f..7cde03337e14 100644 --- a/include/net/nexthop.h +++ b/include/net/nexthop.h @@ -35,6 +35,9 @@ struct nh_config { struct in6_addr ipv6; } gw; + struct nlattr *nh_encap; + u16 nh_encap_type; + u32 nlflags; struct nl_info nlinfo; }; diff --git a/net/ipv4/nexthop.c b/net/ipv4/nexthop.c index f2b237a6735c..3a1cbcb96baa 100644 --- a/net/ipv4/nexthop.c +++ b/net/ipv4/nexthop.c @@ -9,6 +9,7 @@ #include <linux/rtnetlink.h> #include <linux/slab.h> #include <net/ipv6_stubs.h> +#include <net/lwtunnel.h> #include <net/nexthop.h> #include <net/route.h> #include <net/sock.h> @@ -182,6 +183,11 @@ static int nh_fill_node(struct sk_buff *skb, struct nexthop *nh, break; } + if (nhi->fib_nhc.nhc_lwtstate && + lwtunnel_fill_encap(skb, nhi->fib_nhc.nhc_lwtstate, + NHA_ENCAP, NHA_ENCAP_TYPE) < 0) + goto nla_put_failure; + out: nlmsg_end(skb, nlh); return 0; @@ -213,6 +219,11 @@ static size_t nh_nlmsg_size(struct nexthop *nh) break; } + if (nhi->fib_nhc.nhc_lwtstate) { + sz += lwtunnel_get_encap_size(nhi->fib_nhc.nhc_lwtstate); + sz += nla_total_size(2); /* NHA_ENCAP_TYPE */ + } + return sz; } @@ -370,6 +381,8 @@ static int nh_create_ipv4(struct net *net, struct nexthop *nh, .fc_gw4 = cfg->gw.ipv4, .fc_gw_family = cfg->gw.ipv4 ? AF_INET : 0, .fc_flags = cfg->nh_flags, + .fc_encap = cfg->nh_encap, + .fc_encap_type = cfg->nh_encap_type, }; u32 tb_id = l3mdev_fib_table(cfg->dev); int err = -EINVAL; @@ -402,6 +415,8 @@ static int nh_create_ipv6(struct net *net, struct nexthop *nh, .fc_ifindex = cfg->nh_ifindex, .fc_gateway = cfg->gw.ipv6, .fc_flags = cfg->nh_flags, + .fc_encap = cfg->nh_encap, + .fc_encap_type = cfg->nh_encap_type, }; int err = -EINVAL; @@ -561,7 +576,8 @@ static int rtm_to_nh_config(struct net *net, struct sk_buff *skb, cfg->nh_id = nla_get_u32(tb[NHA_ID]); if (tb[NHA_BLACKHOLE]) { - if (tb[NHA_GATEWAY] || tb[NHA_OIF]) { + if (tb[NHA_GATEWAY] || tb[NHA_OIF] || + tb[NHA_ENCAP] || tb[NHA_ENCAP_TYPE]) { NL_SET_ERR_MSG(extack, "Blackhole attribute can not be used with gateway or oif"); goto out; } @@ -626,6 +642,25 @@ static int rtm_to_nh_config(struct net *net, struct sk_buff *skb, } } + if (tb[NHA_ENCAP]) { + cfg->nh_encap = tb[NHA_ENCAP]; + + if (!tb[NHA_ENCAP_TYPE]) { + NL_SET_ERR_MSG(extack, "LWT encapsulation type is missing"); + goto out; + } + + cfg->nh_encap_type = nla_get_u16(tb[NHA_ENCAP_TYPE]); + err = lwtunnel_valid_encap_type(cfg->nh_encap_type, extack); + if (err < 0) + goto out; + + } else if (tb[NHA_ENCAP_TYPE]) { + NL_SET_ERR_MSG(extack, "LWT encapsulation attribute is missing"); + goto out; + } + + err = 0; out: return err; |