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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 06:54:56 -0700 |
| commit | 2aae409672a9ec6078702b2fe92bd41ecf05d826 (patch) | |
| tree | 9c1ce9b64620a3d31393ea77fbcc7906ba20fd0c | |
| parent | 00897febb83864e2dd388d719b256cb362198e27 (diff) | |
| download | kernel-common-2aae409672a9ec6078702b2fe92bd41ecf05d826.tar.gz kernel-common-2aae409672a9ec6078702b2fe92bd41ecf05d826.tar.bz2 kernel-common-2aae409672a9ec6078702b2fe92bd41ecf05d826.zip | |
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/uapi/linux/icmpv6.h | 2 | ||||
| -rw-r--r-- | net/ipv6/icmp.c | 10 |
2 files changed, 11 insertions, 1 deletions
diff --git a/include/uapi/linux/icmpv6.h b/include/uapi/linux/icmpv6.h index e0133c73c304..590beda78ea0 100644 --- 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 diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c index b4ff0a42b8c7..70e704d49007 100644 --- 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, 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; } |