diff options
| -rw-r--r-- | net/ipv4/netfilter/Kconfig | 12 | ||||
| -rw-r--r-- | net/ipv4/netfilter/ipt_REJECT.c | 8 | ||||
| -rw-r--r-- | net/ipv6/netfilter/Kconfig | 12 | ||||
| -rw-r--r-- | net/ipv6/netfilter/ip6t_REJECT.c | 9 |
4 files changed, 41 insertions, 0 deletions
diff --git a/net/ipv4/netfilter/Kconfig b/net/ipv4/netfilter/Kconfig index 1dfc18a03fd4..73b4e91a87e7 100644 --- a/net/ipv4/netfilter/Kconfig +++ b/net/ipv4/netfilter/Kconfig @@ -113,6 +113,18 @@ config IP_NF_TARGET_REJECT To compile it as a module, choose M here. If unsure, say N. +config IP_NF_TARGET_REJECT_SKERR + bool "Force socket error when rejecting with icmp*" + depends on IP_NF_TARGET_REJECT + default n + help + This option enables turning a "--reject-with icmp*" into a matching + socket error also. + The REJECT target normally allows sending an ICMP message. But it + leaves the local socket unaware of any ingress rejects. + + If unsure, say N. + config IP_NF_TARGET_LOG tristate "LOG target support" default m if NETFILTER_ADVANCED=n diff --git a/net/ipv4/netfilter/ipt_REJECT.c b/net/ipv4/netfilter/ipt_REJECT.c index 51f13f8ec724..9dd754c7f2b6 100644 --- a/net/ipv4/netfilter/ipt_REJECT.c +++ b/net/ipv4/netfilter/ipt_REJECT.c @@ -128,6 +128,14 @@ static void send_reset(struct sk_buff *oldskb, int hook) static inline void send_unreach(struct sk_buff *skb_in, int code) { icmp_send(skb_in, ICMP_DEST_UNREACH, code, 0); +#ifdef CONFIG_IP_NF_TARGET_REJECT_SKERR + if (skb_in->sk) { + skb_in->sk->sk_err = icmp_err_convert[code].errno; + skb_in->sk->sk_error_report(skb_in->sk); + pr_debug("ipt_REJECT: sk_err=%d for skb=%p sk=%p\n", + skb_in->sk->sk_err, skb_in, skb_in->sk); + } +#endif } static unsigned int diff --git a/net/ipv6/netfilter/Kconfig b/net/ipv6/netfilter/Kconfig index 448464844a25..5bbf53169202 100644 --- a/net/ipv6/netfilter/Kconfig +++ b/net/ipv6/netfilter/Kconfig @@ -174,6 +174,18 @@ config IP6_NF_TARGET_REJECT To compile it as a module, choose M here. If unsure, say N. +config IP6_NF_TARGET_REJECT_SKERR + bool "Force socket error when rejecting with icmp*" + depends on IP6_NF_TARGET_REJECT + default n + help + This option enables turning a "--reject-with icmp*" into a matching + socket error also. + The REJECT target normally allows sending an ICMP message. But it + leaves the local socket unaware of any ingress rejects. + + If unsure, say N. + config IP6_NF_MANGLE tristate "Packet mangling" default m if NETFILTER_ADVANCED=n diff --git a/net/ipv6/netfilter/ip6t_REJECT.c b/net/ipv6/netfilter/ip6t_REJECT.c index a5a4c5dd5396..09d30498c927 100644 --- a/net/ipv6/netfilter/ip6t_REJECT.c +++ b/net/ipv6/netfilter/ip6t_REJECT.c @@ -177,6 +177,15 @@ send_unreach(struct net *net, struct sk_buff *skb_in, unsigned char code, skb_in->dev = net->loopback_dev; icmpv6_send(skb_in, ICMPV6_DEST_UNREACH, code, 0); +#ifdef CONFIG_IP6_NF_TARGET_REJECT_SKERR + if (skb_in->sk) { + icmpv6_err_convert(ICMPV6_DEST_UNREACH, code, + &skb_in->sk->sk_err); + skb_in->sk->sk_error_report(skb_in->sk); + pr_debug("ip6t_REJECT: sk_err=%d for skb=%p sk=%p\n", + skb_in->sk->sk_err, skb_in, skb_in->sk); + } +#endif } static unsigned int |