5d5fbe79c1
In order to match NetBSD-style imports of external code, the library has been restructured. The full lwIP source tree is imported, except for a few .git* files in its root directory, into dist/. The MINIX 3 Makefiles and other custom files are located in lib/. Finally, since we need to apply a number of small patches to lwIP, these patches are stored in patches/, in addition to being applied to the lwIP tree. The currently imported version of lwIP is taken from its master branch sometime after the 2.0.1 release, specifically git-7ffe5bf. Change-Id: Ie03c4fa36fa928870263c191205d6d93f652a3cc
43 lines
1.8 KiB
Diff
43 lines
1.8 KiB
Diff
From 614408895d331467612a0f4ea60753b1fe5e4ce8 Mon Sep 17 00:00:00 2001
|
|
From: David van Moolenbroek <david@minix3.org>
|
|
Date: Thu, 2 Feb 2017 18:45:05 +0000
|
|
Subject: [PATCH 3/4] MINIX 3 only: ignore IPv6 Router Advertisements
|
|
|
|
For MINIX 3, there are two reasons why Router Advertisement messages
|
|
should be ignored altogether, depending on the role of the system:
|
|
|
|
1) if the MINIX 3 node is acting as a router, accepting such
|
|
messages from other nodes would constitute an RFC violation;
|
|
2) if the MINIX 3 node is acting as a host, processing of the Router
|
|
Advertisement messages is the responsibility of userland, and
|
|
dhcpcd(8) in particular; letting lwIP process them would only
|
|
serve to fill lwIP's local (default-router and prefix) tables,
|
|
which may then erroneously override our subnet routing decisions.
|
|
|
|
A negative side effect of this change is that in the host scenario,
|
|
lwIP is no longer less likely to evict entries for routers from its
|
|
neighbor cache. This is an issue only on locally attached networks
|
|
and should not pose many problems in practice. The entries will also
|
|
no longer show up as router entries in ndp(8) output.
|
|
---
|
|
src/core/ipv6/icmp6.c | 2 ++
|
|
1 file changed, 2 insertions(+)
|
|
|
|
diff --git a/src/core/ipv6/icmp6.c b/src/core/ipv6/icmp6.c
|
|
index 13416bd..51b6705 100644
|
|
--- a/src/core/ipv6/icmp6.c
|
|
+++ b/src/core/ipv6/icmp6.c
|
|
@@ -117,7 +117,9 @@ icmp6_input(struct pbuf *p, struct netif *inp)
|
|
switch (icmp6hdr->type) {
|
|
case ICMP6_TYPE_NA: /* Neighbor advertisement */
|
|
case ICMP6_TYPE_NS: /* Neighbor solicitation */
|
|
+#if !defined(__minix)
|
|
case ICMP6_TYPE_RA: /* Router advertisement */
|
|
+#endif /* !defined(__minix) */
|
|
case ICMP6_TYPE_RD: /* Redirect */
|
|
case ICMP6_TYPE_PTB: /* Packet too big */
|
|
nd6_input(p, inp);
|
|
--
|
|
2.5.2
|
|
|