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| author | Jiri Bohac <jbohac@suse.cz> | 2013-08-30 11:18:45 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-09-14 05:50:48 -0700 |
| commit | 2eeeacf627ab4bac67c3c1735b2c96fccbea6262 (patch) | |
| tree | 76496069ee765d2ef8b2420219bbe9d959a8ccee | |
| parent | 238d6ce5d070b4f95a3deeaf979d8c7e30d7de5d (diff) | |
| download | linux-rt-2eeeacf627ab4bac67c3c1735b2c96fccbea6262.tar.gz | |
ICMPv6: treat dest unreachable codes 5 and 6 as EACCES, not EPROTO
[ 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@suse.cz>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | include/linux/icmpv6.h | 2 | ||||
| -rw-r--r-- | net/ipv6/icmp.c | 10 |
2 files changed, 11 insertions, 1 deletions
diff --git a/include/linux/icmpv6.h b/include/linux/icmpv6.h index ba45e6bc0764..f5a21d0a22ba 100644 --- a/include/linux/icmpv6.h +++ b/include/linux/icmpv6.h @@ -123,6 +123,8 @@ static inline struct icmp6hdr *icmp6_hdr(const struct sk_buff *skb) #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 diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c index 11900417b1cc..a51d1879684f 100644 --- a/net/ipv6/icmp.c +++ b/net/ipv6/icmp.c @@ -917,6 +917,14 @@ 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) @@ -928,7 +936,7 @@ int icmpv6_err_convert(u8 type, u8 code, int *err) 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; } |