diff options
| author | David Ahern <dsahern@gmail.com> | 2019-04-05 16:30:30 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-04-08 15:22:40 -0700 |
| commit | a4ea5d43c807be28545625c1e0641905022fa0d1 (patch) | |
| tree | 81dece465c821345b0b176e555bdcd3389a5c8fe /net/ipv4/fib_semantics.c | |
| parent | 0f5f7d7bf6e6bda4dffe7b42812a16ada6ea9816 (diff) | |
| download | linux-a4ea5d43c807be28545625c1e0641905022fa0d1.tar.bz2 | |
ipv4: Add support to fib_config for IPv6 gateway
Add support for an IPv6 gateway to fib_config. Since a gateway is either
IPv4 or IPv6, make it a union with fc_gw4 where fc_gw_family decides
which address is in use. Update current checks on family and gw4 to
handle ipv6 as well.
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/ipv4/fib_semantics.c')
| -rw-r--r-- | net/ipv4/fib_semantics.c | 29 |
1 files changed, 23 insertions, 6 deletions
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c index d3e26e55f2e1..680b5a9a911a 100644 --- a/net/ipv4/fib_semantics.c +++ b/net/ipv4/fib_semantics.c @@ -276,7 +276,7 @@ static inline int nh_comp(const struct fib_info *fi, const struct fib_info *ofi) for_nexthops(fi) { if (nh->fib_nh_oif != onh->fib_nh_oif || - nh->fib_nh_gw4 != onh->fib_nh_gw4 || + nh->fib_nh_gw_family != onh->fib_nh_gw_family || nh->fib_nh_scope != onh->fib_nh_scope || #ifdef CONFIG_IP_ROUTE_MULTIPATH nh->fib_nh_weight != onh->fib_nh_weight || @@ -287,6 +287,15 @@ static inline int nh_comp(const struct fib_info *fi, const struct fib_info *ofi) lwtunnel_cmp_encap(nh->fib_nh_lws, onh->fib_nh_lws) || ((nh->fib_nh_flags ^ onh->fib_nh_flags) & ~RTNH_COMPARE_MASK)) return -1; + + if (nh->fib_nh_gw_family == AF_INET && + nh->fib_nh_gw4 != onh->fib_nh_gw4) + return -1; + + if (nh->fib_nh_gw_family == AF_INET6 && + ipv6_addr_cmp(&nh->fib_nh_gw6, &onh->fib_nh_gw6)) + return -1; + onh++; } endfor_nexthops(fi); return 0; @@ -511,10 +520,12 @@ int fib_nh_init(struct net *net, struct fib_nh *nh, goto init_failure; nh->fib_nh_oif = cfg->fc_oif; - if (cfg->fc_gw_family == AF_INET) { + nh->fib_nh_gw_family = cfg->fc_gw_family; + if (cfg->fc_gw_family == AF_INET) nh->fib_nh_gw4 = cfg->fc_gw4; - nh->fib_nh_gw_family = AF_INET; - } + else if (cfg->fc_gw_family == AF_INET6) + nh->fib_nh_gw6 = cfg->fc_gw6; + nh->fib_nh_flags = cfg->fc_flags; #ifdef CONFIG_IP_ROUTE_CLASSID @@ -621,9 +632,11 @@ static int fib_get_nhs(struct fib_info *fi, struct rtnexthop *rtnh, if (cfg->fc_gw_family) { if (cfg->fc_gw_family != fi->fib_nh->fib_nh_gw_family || (cfg->fc_gw_family == AF_INET && - fi->fib_nh->fib_nh_gw4 != cfg->fc_gw4)) { + fi->fib_nh->fib_nh_gw4 != cfg->fc_gw4) || + (cfg->fc_gw_family == AF_INET6 && + ipv6_addr_cmp(&fi->fib_nh->fib_nh_gw6, &cfg->fc_gw6))) { NL_SET_ERR_MSG(extack, - "Nexthop gateway does not match RTA_GATEWAY"); + "Nexthop gateway does not match RTA_GATEWAY or RTA_VIA"); goto errout; } } @@ -745,6 +758,10 @@ int fib_nh_match(struct fib_config *cfg, struct fib_info *fi, cfg->fc_gw4 != fi->fib_nh->fib_nh_gw4) return 1; + if (cfg->fc_gw_family == AF_INET6 && + ipv6_addr_cmp(&cfg->fc_gw6, &fi->fib_nh->fib_nh_gw6)) + return 1; + return 0; } |