This is a note to let you know that I've just added the patch titled
ICMPv6: treat dest unreachable codes 5 and 6 as EACCES, not EPROTO
to the 3.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
icmpv6-treat-dest-unreachable-codes-5-and-6-as-eacces-not-eproto.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 25afc7964da75b468e258fc2fe1dadf5939eabd7 Mon Sep 17 00:00:00 2001
From: Jiri Bohac <jbohac@xxxxxxx>
Date: Fri, 30 Aug 2013 11:18:45 +0200
Subject: ICMPv6: treat dest unreachable codes 5 and 6 as EACCES, not EPROTO
From: Jiri Bohac <jbohac@xxxxxxx>
[ Upstream commit 61e76b178dbe7145e8d6afa84bb4ccea71918994 ]
RFC 4443 has defined two additional codes for ICMPv6 type 1 (destination
unreachable) messages:
5 - Source address failed ingress/egress policy
6 - Reject route to destination
Now they are treated as protocol error and icmpv6_err_convert() converts them
to EPROTO.
RFC 4443 says:
"Codes 5 and 6 are more informative subsets of code 1."
Treat codes 5 and 6 as code 1 (EACCES)
Btw, connect() returning -EPROTO confuses firefox, so that fallback to
other/IPv4 addresses does not work:
https://bugzilla.mozilla.org/show_bug.cgi?id=910773
Signed-off-by: Jiri Bohac <jbohac@xxxxxxx>
Acked-by: Hannes Frederic Sowa <hannes@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
include/uapi/linux/icmpv6.h | 2 ++
net/ipv6/icmp.c | 10 +++++++++-
2 files changed, 11 insertions(+), 1 deletion(-)
--- a/include/uapi/linux/icmpv6.h
+++ b/include/uapi/linux/icmpv6.h
@@ -115,6 +115,8 @@ struct icmp6hdr {
#define ICMPV6_NOT_NEIGHBOUR 2
#define ICMPV6_ADDR_UNREACH 3
#define ICMPV6_PORT_UNREACH 4
+#define ICMPV6_POLICY_FAIL 5
+#define ICMPV6_REJECT_ROUTE 6
/*
* Codes for Time Exceeded
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -931,6 +931,14 @@ static const struct icmp6_err {
.err = ECONNREFUSED,
.fatal = 1,
},
+ { /* POLICY_FAIL */
+ .err = EACCES,
+ .fatal = 1,
+ },
+ { /* REJECT_ROUTE */
+ .err = EACCES,
+ .fatal = 1,
+ },
};
int icmpv6_err_convert(u8 type, u8 code, int *err)
@@ -942,7 +950,7 @@ int icmpv6_err_convert(u8 type, u8 code,
switch (type) {
case ICMPV6_DEST_UNREACH:
fatal = 1;
- if (code <= ICMPV6_PORT_UNREACH) {
+ if (code < ARRAY_SIZE(tab_unreach)) {
*err = tab_unreach[code].err;
fatal = tab_unreach[code].fatal;
}
Patches currently in stable-queue which might be from jbohac@xxxxxxx are
queue-3.10/icmpv6-treat-dest-unreachable-codes-5-and-6-as-eacces-not-eproto.patch
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