kernel: backport export ipv6_push_frag_opts for tunneling now

[openwrt/openwrt.git] / target / linux / generic / backport-4.9 / 094-v4.12-ip6_tunnel-Fix-missing-tunnel-encapsulation-limit-op.patch

diff --git a/target/linux/generic/backport-4.9/094-v4.12-ip6_tunnel-Fix-missing-tunnel-encapsulation-limit-op.patch b/target/linux/generic/backport-4.9/094-v4.12-ip6_tunnel-Fix-missing-tunnel-encapsulation-limit-op.patch
deleted file mode 100644 (file)
index 0ccbacf..0000000
--- a/target/linux/generic/backport-4.9/094-v4.12-ip6_tunnel-Fix-missing-tunnel-encapsulation-limit-op.patch
+++ /dev/null
@@ -1,50 +0,0 @@
-From 89a23c8b528bd2c89f3981573d6cd7d23840c8a6 Mon Sep 17 00:00:00 2001
-From: Craig Gallek <cgallek@google.com>
-Date: Wed, 26 Apr 2017 14:37:45 -0400
-Subject: [PATCH] ip6_tunnel: Fix missing tunnel encapsulation limit option
-
-The IPv6 tunneling code tries to insert IPV6_TLV_TNL_ENCAP_LIMIT and
-IPV6_TLV_PADN options when an encapsulation limit is defined (the
-default is a limit of 4).  An MTU adjustment is done to account for
-these options as well.  However, the options are never present in the
-generated packets.
-
-The issue appears to be a subtlety between IPV6_DSTOPTS and
-IPV6_RTHDRDSTOPTS defined in RFC 3542.  When the IPIP tunnel driver was
-written, the encap limit options were included as IPV6_RTHDRDSTOPTS in
-dst0opt of struct ipv6_txoptions.  Later, ipv6_push_nfrags_opts was
-(correctly) updated to require IPV6_RTHDR options when IPV6_RTHDRDSTOPTS
-are to be used.  This caused the options to no longer be included in v6
-encapsulated packets.
-
-The fix is to use IPV6_DSTOPTS (in dst1opt of struct ipv6_txoptions)
-instead.  IPV6_DSTOPTS do not have the additional IPV6_RTHDR requirement.
-
-Fixes: 1df64a8569c7: ("[IPV6]: Add ip6ip6 tunnel driver.")
-Fixes: 333fad5364d6: ("[IPV6]: Support several new sockopt / ancillary data in Advanced API (RFC3542)")
-Signed-off-by: Craig Gallek <kraig@google.com>
-Signed-off-by: David S. Miller <davem@davemloft.net>
----
- net/ipv6/ip6_tunnel.c | 4 ++--
- 1 file changed, 2 insertions(+), 2 deletions(-)
-
---- a/net/ipv6/ip6_tunnel.c
-+++ b/net/ipv6/ip6_tunnel.c
-@@ -957,7 +957,7 @@ static void init_tel_txopt(struct ipv6_t
-       opt->dst_opt[5] = IPV6_TLV_PADN;
-       opt->dst_opt[6] = 1;
- 
--      opt->ops.dst0opt = (struct ipv6_opt_hdr *) opt->dst_opt;
-+      opt->ops.dst1opt = (struct ipv6_opt_hdr *) opt->dst_opt;
-       opt->ops.opt_nflen = 8;
- }
- 
-@@ -1191,7 +1191,7 @@ route_lookup:
- 
-       if (encap_limit >= 0) {
-               init_tel_txopt(&opt, encap_limit);
--              ipv6_push_nfrag_opts(skb, &opt.ops, &proto, NULL);
-+              ipv6_push_frag_opts(skb, &opt.ops, &proto);
-       }
- 
-       /* Calculate max headroom for all the headers and adjust