diff options
| author | David Ahern <dsahern@gmail.com> | 2019-04-05 16:30:32 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-04-08 15:22:41 -0700 |
| commit | 717a8f5b2923c44da9157e145c294c4343a5f6de (patch) | |
| tree | 5bafa5a9c87bbc9644abd70ce53c055bebdf79a7 /net | |
| parent | 448d7248191706cbbd7761e3bc72c2985c4d38a7 (diff) | |
ipv4: Add fib_check_nh_v6_gw
Add helper to use fib6_nh_init to validate a nexthop spec with an IPv6
gateway.
Signed-off-by: David Ahern <dsahern@gmail.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/fib_semantics.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c index 32ce6e6202d2..dd95725c318e 100644 --- a/net/ipv4/fib_semantics.c +++ b/net/ipv4/fib_semantics.c @@ -41,6 +41,7 @@ #include <net/tcp.h> #include <net/sock.h> #include <net/ip_fib.h> +#include <net/ip6_fib.h> #include <net/netlink.h> #include <net/nexthop.h> #include <net/lwtunnel.h> @@ -841,6 +842,30 @@ bool fib_metrics_match(struct fib_config *cfg, struct fib_info *fi) return true; } +static int fib_check_nh_v6_gw(struct net *net, struct fib_nh *nh, + u32 table, struct netlink_ext_ack *extack) +{ + struct fib6_config cfg = { + .fc_table = table, + .fc_flags = nh->fib_nh_flags | RTF_GATEWAY, + .fc_ifindex = nh->fib_nh_oif, + .fc_gateway = nh->fib_nh_gw6, + }; + struct fib6_nh fib6_nh = {}; + int err; + + err = ipv6_stub->fib6_nh_init(net, &fib6_nh, &cfg, GFP_KERNEL, extack); + if (!err) { + nh->fib_nh_dev = fib6_nh.fib_nh_dev; + dev_hold(nh->fib_nh_dev); + nh->fib_nh_oif = nh->fib_nh_dev->ifindex; + nh->fib_nh_scope = RT_SCOPE_LINK; + + ipv6_stub->fib6_nh_release(&fib6_nh); + } + + return err; +} /* * Picture @@ -1023,6 +1048,8 @@ static int fib_check_nh(struct fib_config *cfg, struct fib_nh *nh, if (nh->fib_nh_gw_family == AF_INET) err = fib_check_nh_v4_gw(net, nh, table, cfg->fc_scope, extack); + else if (nh->fib_nh_gw_family == AF_INET6) + err = fib_check_nh_v6_gw(net, nh, table, extack); else err = fib_check_nh_nongw(net, nh, extack); |