Date: Tue, 14 Aug 2018 07:54:14 +0000 (UTC) From: "Andrey V. Elsukov" <ae@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r337736 - in head/sys: netinet netinet6 Message-ID: <201808140754.w7E7sEFs018313@repo.freebsd.org>
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Author: ae Date: Tue Aug 14 07:54:14 2018 New Revision: 337736 URL: https://svnweb.freebsd.org/changeset/base/337736 Log: Restore ability to send ICMP and ICMPv6 redirects. It was lost when tryforward appeared. Now ip[6]_tryforward will be enabled only when sending redirects for corresponding IP version is disabled via sysctl. Otherwise will be used default forwarding function. PR: 221137 Submitted by: mckay@ MFC after: 2 weeks Modified: head/sys/netinet/ip_input.c head/sys/netinet6/ip6_input.c Modified: head/sys/netinet/ip_input.c ============================================================================== --- head/sys/netinet/ip_input.c Tue Aug 14 05:18:43 2018 (r337735) +++ head/sys/netinet/ip_input.c Tue Aug 14 07:54:14 2018 (r337736) @@ -557,13 +557,15 @@ tooshort: /* * Try to forward the packet, but if we fail continue. + * ip_tryforward() does not generate redirects, so fall + * through to normal processing if redirects are required. * ip_tryforward() does inbound and outbound packet firewall * processing. If firewall has decided that destination becomes * our local address, it sets M_FASTFWD_OURS flag. In this * case skip another inbound firewall processing and update * ip pointer. */ - if (V_ipforwarding != 0 + if (V_ipforwarding != 0 && V_ipsendredirects == 0 #if defined(IPSEC) || defined(IPSEC_SUPPORT) && (!IPSEC_ENABLED(ipv4) || IPSEC_CAPS(ipv4, m, IPSEC_CAP_OPERABLE) == 0) Modified: head/sys/netinet6/ip6_input.c ============================================================================== --- head/sys/netinet6/ip6_input.c Tue Aug 14 05:18:43 2018 (r337735) +++ head/sys/netinet6/ip6_input.c Tue Aug 14 07:54:14 2018 (r337736) @@ -720,13 +720,15 @@ ip6_input(struct mbuf *m) #endif /* * Try to forward the packet, but if we fail continue. + * ip6_tryforward() does not generate redirects, so fall + * through to normal processing if redirects are required. * ip6_tryforward() does inbound and outbound packet firewall * processing. If firewall has decided that destination becomes * our local address, it sets M_FASTFWD_OURS flag. In this * case skip another inbound firewall processing and update * ip6 pointer. */ - if (V_ip6_forwarding != 0 + if (V_ip6_forwarding != 0 && V_ip6_sendredirects == 0 #if defined(IPSEC) || defined(IPSEC_SUPPORT) && (!IPSEC_ENABLED(ipv6) || IPSEC_CAPS(ipv6, m, IPSEC_CAP_OPERABLE) == 0)
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