From 97adaddaa6db7a8af81b9b11e30cbe3628cd6700 Mon Sep 17 00:00:00 2001 From: Taehee Yoo Date: Mon, 5 Nov 2018 22:31:41 +0900 Subject: [PATCH] net: bpfilter: fix iptables failure if bpfilter_umh is disabled When iptables command is executed, ip_{set/get}sockopt() try to upload bpfilter.ko if bpfilter is enabled. if it couldn't find bpfilter.ko, command is failed. bpfilter.ko is generated if CONFIG_BPFILTER_UMH is enabled. ip_{set/get}sockopt() only checks CONFIG_BPFILTER. So that if CONFIG_BPFILTER is enabled and CONFIG_BPFILTER_UMH is disabled, iptables command is always failed. test config: CONFIG_BPFILTER=y # CONFIG_BPFILTER_UMH is not set test command: %iptables -L iptables: No chain/target/match by that name. Fixes: d2ba09c17a06 ("net: add skeleton of bpfilter kernel module") Signed-off-by: Taehee Yoo Signed-off-by: David S. Miller --- net/ipv4/ip_sockglue.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c index 26c36cccabdc..fffcc130900e 100644 --- a/net/ipv4/ip_sockglue.c +++ b/net/ipv4/ip_sockglue.c @@ -1246,7 +1246,7 @@ int ip_setsockopt(struct sock *sk, int level, return -ENOPROTOOPT; err = do_ip_setsockopt(sk, level, optname, optval, optlen); -#ifdef CONFIG_BPFILTER +#if IS_ENABLED(CONFIG_BPFILTER_UMH) if (optname >= BPFILTER_IPT_SO_SET_REPLACE && optname < BPFILTER_IPT_SET_MAX) err = bpfilter_ip_set_sockopt(sk, optname, optval, optlen); @@ -1559,7 +1559,7 @@ int ip_getsockopt(struct sock *sk, int level, int err; err = do_ip_getsockopt(sk, level, optname, optval, optlen, 0); -#ifdef CONFIG_BPFILTER +#if IS_ENABLED(CONFIG_BPFILTER_UMH) if (optname >= BPFILTER_IPT_SO_GET_INFO && optname < BPFILTER_IPT_GET_MAX) err = bpfilter_ip_get_sockopt(sk, optname, optval, optlen); @@ -1596,7 +1596,7 @@ int compat_ip_getsockopt(struct sock *sk, int level, int optname, err = do_ip_getsockopt(sk, level, optname, optval, optlen, MSG_CMSG_COMPAT); -#ifdef CONFIG_BPFILTER +#if IS_ENABLED(CONFIG_BPFILTER_UMH) if (optname >= BPFILTER_IPT_SO_GET_INFO && optname < BPFILTER_IPT_GET_MAX) err = bpfilter_ip_get_sockopt(sk, optname, optval, optlen); -- 2.30.2