| Message ID | 20161108132914.1495283-1-arnd@arndb.de |
|---|---|
| State | Accepted |
| Delegated to: | Pablo Neira |
| Headers | show |
On Tue, Nov 08, 2016 at 02:28:18PM +0100, Arnd Bergmann wrote: > Since commit ca065d0cf80f ("udp: no longer use SLAB_DESTROY_BY_RCU") > the udp6_lib_lookup and udp4_lib_lookup functions are only > provided when it is actually possible to call them. > > However, moving the callers now caused a link error: > > net/built-in.o: In function `nf_sk_lookup_slow_v6': > (.text+0x131a39): undefined reference to `udp6_lib_lookup' > net/ipv4/netfilter/nf_socket_ipv4.o: In function `nf_sk_lookup_slow_v4': > nf_socket_ipv4.c:(.text.nf_sk_lookup_slow_v4+0x114): undefined reference to `udp4_lib_lookup' > > This extends the #ifdef so we also provide the functions when > CONFIG_NF_SOCKET_IPV4 or CONFIG_NF_SOCKET_IPV6, respectively > are set. Applied, thanks Arnd! -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 097b70628631..c827e4ea509e 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -580,7 +580,8 @@ EXPORT_SYMBOL_GPL(udp4_lib_lookup_skb); * Does increment socket refcount. */ #if IS_ENABLED(CONFIG_NETFILTER_XT_MATCH_SOCKET) || \ - IS_ENABLED(CONFIG_NETFILTER_XT_TARGET_TPROXY) + IS_ENABLED(CONFIG_NETFILTER_XT_TARGET_TPROXY) || \ + IS_ENABLED(CONFIG_NF_SOCKET_IPV4) struct sock *udp4_lib_lookup(struct net *net, __be32 saddr, __be16 sport, __be32 daddr, __be16 dport, int dif) { diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index 5313818b7485..86a8cacd333b 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -302,7 +302,8 @@ EXPORT_SYMBOL_GPL(udp6_lib_lookup_skb); * Does increment socket refcount. */ #if IS_ENABLED(CONFIG_NETFILTER_XT_MATCH_SOCKET) || \ - IS_ENABLED(CONFIG_NETFILTER_XT_TARGET_TPROXY) + IS_ENABLED(CONFIG_NETFILTER_XT_TARGET_TPROXY) || \ + IS_ENABLED(CONFIG_NF_SOCKET_IPV6) struct sock *udp6_lib_lookup(struct net *net, const struct in6_addr *saddr, __be16 sport, const struct in6_addr *daddr, __be16 dport, int dif) {
Since commit ca065d0cf80f ("udp: no longer use SLAB_DESTROY_BY_RCU") the udp6_lib_lookup and udp4_lib_lookup functions are only provided when it is actually possible to call them. However, moving the callers now caused a link error: net/built-in.o: In function `nf_sk_lookup_slow_v6': (.text+0x131a39): undefined reference to `udp6_lib_lookup' net/ipv4/netfilter/nf_socket_ipv4.o: In function `nf_sk_lookup_slow_v4': nf_socket_ipv4.c:(.text.nf_sk_lookup_slow_v4+0x114): undefined reference to `udp4_lib_lookup' This extends the #ifdef so we also provide the functions when CONFIG_NF_SOCKET_IPV4 or CONFIG_NF_SOCKET_IPV6, respectively are set. Fixes: 8db4c5be88f6 ("netfilter: move socket lookup infrastructure to nf_socket_ipv{4,6}.c") Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- The build failure came from the netfilter tree but is now present in net-next, so if the solution is correct, this patch can be applied there. --- net/ipv4/udp.c | 3 ++- net/ipv6/udp.c | 3 ++- 2 files changed, 4 insertions(+), 2 deletions(-)