diff options
| author | Hangbin Liu <liuhangbin@gmail.com> | 2019-02-27 16:15:29 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-03-01 16:41:27 -0800 |
| commit | 5e1a99eae84999a2536f50a0beaf5d5262337f40 (patch) | |
| tree | aee5af984c0d5af3510ed5095c7874dcaabf1e01 | |
| parent | 90490ef7269906423a1c1b917fc24be8b1602658 (diff) | |
| download | linux-5e1a99eae84999a2536f50a0beaf5d5262337f40.tar.bz2 | |
ipv4: Add ICMPv6 support when parse route ipproto
For ip rules, we need to use 'ipproto ipv6-icmp' to match ICMPv6 headers.
But for ip -6 route, currently we only support tcp, udp and icmp.
Add ICMPv6 support so we can match ipv6-icmp rules for route lookup.
v2: As David Ahern and Sabrina Dubroca suggested, Add an argument to
rtm_getroute_parse_ip_proto() to handle ICMP/ICMPv6 with different family.
Reported-by: Jianlin Shi <jishi@redhat.com>
Fixes: eacb9384a3fe ("ipv6: support sport, dport and ip_proto in RTM_GETROUTE")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/net/ip.h | 2 | ||||
| -rw-r--r-- | net/ipv4/netlink.c | 17 | ||||
| -rw-r--r-- | net/ipv4/route.c | 2 | ||||
| -rw-r--r-- | net/ipv6/route.c | 3 |
4 files changed, 17 insertions, 7 deletions
diff --git a/include/net/ip.h b/include/net/ip.h index f0e8d064e249..be3cad9c2e4c 100644 --- a/include/net/ip.h +++ b/include/net/ip.h @@ -718,7 +718,7 @@ extern int sysctl_icmp_msgs_burst; int ip_misc_proc_init(void); #endif -int rtm_getroute_parse_ip_proto(struct nlattr *attr, u8 *ip_proto, +int rtm_getroute_parse_ip_proto(struct nlattr *attr, u8 *ip_proto, u8 family, struct netlink_ext_ack *extack); #endif /* _IP_H */ diff --git a/net/ipv4/netlink.c b/net/ipv4/netlink.c index f86bb4f06609..d8e3a1fb8e82 100644 --- a/net/ipv4/netlink.c +++ b/net/ipv4/netlink.c @@ -3,9 +3,10 @@ #include <linux/types.h> #include <net/net_namespace.h> #include <net/netlink.h> +#include <linux/in6.h> #include <net/ip.h> -int rtm_getroute_parse_ip_proto(struct nlattr *attr, u8 *ip_proto, +int rtm_getroute_parse_ip_proto(struct nlattr *attr, u8 *ip_proto, u8 family, struct netlink_ext_ack *extack) { *ip_proto = nla_get_u8(attr); @@ -13,11 +14,19 @@ int rtm_getroute_parse_ip_proto(struct nlattr *attr, u8 *ip_proto, switch (*ip_proto) { case IPPROTO_TCP: case IPPROTO_UDP: + return 0; case IPPROTO_ICMP: + if (family != AF_INET) + break; + return 0; +#if IS_ENABLED(CONFIG_IPV6) + case IPPROTO_ICMPV6: + if (family != AF_INET6) + break; return 0; - default: - NL_SET_ERR_MSG(extack, "Unsupported ip proto"); - return -EOPNOTSUPP; +#endif } + NL_SET_ERR_MSG(extack, "Unsupported ip proto"); + return -EOPNOTSUPP; } EXPORT_SYMBOL_GPL(rtm_getroute_parse_ip_proto); diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 5163b64f8fb3..7bb9128c8363 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -2803,7 +2803,7 @@ static int inet_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr *nlh, if (tb[RTA_IP_PROTO]) { err = rtm_getroute_parse_ip_proto(tb[RTA_IP_PROTO], - &ip_proto, extack); + &ip_proto, AF_INET, extack); if (err) return err; } diff --git a/net/ipv6/route.c b/net/ipv6/route.c index b7a620023a52..8dad1d690b78 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -4893,7 +4893,8 @@ static int inet6_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr *nlh, if (tb[RTA_IP_PROTO]) { err = rtm_getroute_parse_ip_proto(tb[RTA_IP_PROTO], - &fl6.flowi6_proto, extack); + &fl6.flowi6_proto, AF_INET6, + extack); if (err) goto errout; } |