diff options
Diffstat (limited to 'net/ipv4/tcp_ipv4.c')
| -rw-r--r-- | net/ipv4/tcp_ipv4.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index a4746c27f38a..698e58a3ccec 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -1082,7 +1082,7 @@ static bool better_md5_match(struct tcp_md5sig_key *old, struct tcp_md5sig_key * /* Find the Key structure for an address. */ struct tcp_md5sig_key *__tcp_md5_do_lookup(const struct sock *sk, int l3index, const union tcp_md5_addr *addr, - int family) + int family, bool any_l3index) { const struct tcp_sock *tp = tcp_sk(sk); struct tcp_md5sig_key *key; @@ -1101,7 +1101,8 @@ struct tcp_md5sig_key *__tcp_md5_do_lookup(const struct sock *sk, int l3index, lockdep_sock_is_held(sk)) { if (key->family != family) continue; - if (key->flags & TCP_MD5SIG_FLAG_IFINDEX && key->l3index != l3index) + if (!any_l3index && key->flags & TCP_MD5SIG_FLAG_IFINDEX && + key->l3index != l3index) continue; if (family == AF_INET) { mask = inet_make_mask(key->prefixlen); @@ -1313,7 +1314,7 @@ int tcp_md5_do_del(struct sock *sk, const union tcp_md5_addr *addr, int family, } EXPORT_SYMBOL(tcp_md5_do_del); -static void tcp_clear_md5_list(struct sock *sk) +void tcp_clear_md5_list(struct sock *sk) { struct tcp_sock *tp = tcp_sk(sk); struct tcp_md5sig_key *key; @@ -1383,6 +1384,12 @@ static int tcp_v4_parse_md5_keys(struct sock *sk, int optname, if (cmd.tcpm_keylen > TCP_MD5SIG_MAXKEYLEN) return -EINVAL; + /* Don't allow keys for peers that have a matching TCP-AO key. + * See the comment in tcp_ao_add_cmd() + */ + if (tcp_ao_required(sk, addr, AF_INET)) + return -EKEYREJECTED; + return tcp_md5_do_add(sk, addr, AF_INET, prefixlen, l3index, flags, cmd.tcpm_key, cmd.tcpm_keylen); } @@ -2279,6 +2286,7 @@ static const struct tcp_sock_af_ops tcp_sock_ipv4_specific = { .md5_parse = tcp_v4_parse_md5_keys, #endif #ifdef CONFIG_TCP_AO + .ao_lookup = tcp_v4_ao_lookup, .ao_parse = tcp_v4_parse_ao, #endif }; |