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| author | Alexei Starovoitov <ast@kernel.org> | 2018-10-16 02:08:39 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2018-10-16 02:08:40 +0300 |
| commit | 7d1f12b8b2abab0a7af240b89b5ad68bf7f183e7 (patch) | |
| tree | c2c999f53cdc4e8cb346d825b2d64af9a4056dea | |
| parent | d04fb13c9fcdad850c0fcaeb155863de3d8169a0 (diff) | |
| parent | 5ef0ae84f02a4dbe0e09f89c6481ac13649cb19b (diff) | |
| download | linux-7d1f12b8b2abab0a7af240b89b5ad68bf7f183e7.tar.xz | |
Merge branch 'ipv6_sk_lookup_fixes'
Joe Stringer says:
====================
This series includes a couple of fixups for the IPv6 socket lookup
helper, to make the API more consistent (always supply all arguments in
network byte-order) and to allow its use when IPv6 is compiled as a
module.
====================
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
| -rw-r--r-- | include/net/addrconf.h | 5 | ||||
| -rw-r--r-- | net/core/filter.c | 15 | ||||
| -rw-r--r-- | net/ipv6/af_inet6.c | 1 |
3 files changed, 15 insertions, 6 deletions
diff --git a/include/net/addrconf.h b/include/net/addrconf.h index 6def0351bcc3..14b789a123e7 100644 --- a/include/net/addrconf.h +++ b/include/net/addrconf.h @@ -265,6 +265,11 @@ extern const struct ipv6_stub *ipv6_stub __read_mostly; struct ipv6_bpf_stub { int (*inet6_bind)(struct sock *sk, struct sockaddr *uaddr, int addr_len, bool force_bind_address_no_port, bool with_lock); + struct sock *(*udp6_lib_lookup)(struct net *net, + const struct in6_addr *saddr, __be16 sport, + const struct in6_addr *daddr, __be16 dport, + int dif, int sdif, struct udp_table *tbl, + struct sk_buff *skb); }; extern const struct ipv6_bpf_stub *ipv6_bpf_stub __read_mostly; diff --git a/net/core/filter.c b/net/core/filter.c index 0f5260b04bfe..2e1476536b92 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -4717,21 +4717,24 @@ static struct sock *sk_lookup(struct net *net, struct bpf_sock_tuple *tuple, sk = __udp4_lib_lookup(net, src4, tuple->ipv4.sport, dst4, tuple->ipv4.dport, dif, sdif, &udp_table, skb); -#if IS_REACHABLE(CONFIG_IPV6) +#if IS_ENABLED(CONFIG_IPV6) } else { struct in6_addr *src6 = (struct in6_addr *)&tuple->ipv6.saddr; struct in6_addr *dst6 = (struct in6_addr *)&tuple->ipv6.daddr; + u16 hnum = ntohs(tuple->ipv6.dport); int sdif = inet6_sdif(skb); if (proto == IPPROTO_TCP) sk = __inet6_lookup(net, &tcp_hashinfo, skb, 0, src6, tuple->ipv6.sport, - dst6, tuple->ipv6.dport, + dst6, hnum, dif, sdif, &refcounted); - else - sk = __udp6_lib_lookup(net, src6, tuple->ipv6.sport, - dst6, tuple->ipv6.dport, - dif, sdif, &udp_table, skb); + else if (likely(ipv6_bpf_stub)) + sk = ipv6_bpf_stub->udp6_lib_lookup(net, + src6, tuple->ipv6.sport, + dst6, hnum, + dif, sdif, + &udp_table, skb); #endif } diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c index e9c8cfdf4b4c..3f4d61017a69 100644 --- a/net/ipv6/af_inet6.c +++ b/net/ipv6/af_inet6.c @@ -901,6 +901,7 @@ static const struct ipv6_stub ipv6_stub_impl = { static const struct ipv6_bpf_stub ipv6_bpf_stub_impl = { .inet6_bind = __inet6_bind, + .udp6_lib_lookup = __udp6_lib_lookup, }; static int __init inet6_init(void) |