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authorJohn Crispin <john@phrozen.org>2016-12-25 20:11:34 +0100
committerJohn Crispin <john@phrozen.org>2017-08-05 08:46:36 +0200
commit74d00a8c3849c1340efd713eb94b786e304c201f (patch)
treede481743de61c34da96ab5f9dba3af3edcfb8260 /target/linux/generic/patches-3.18/667-ipv6-Fixed-source-specific-default-route-handling.patch
parentde350550ef648d9728351b986b0516fa29465c45 (diff)
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kernel: split patches folder up into backport, pending and hack folders
* properly format/comment all patches * merge debloat patches * merge Kconfig patches * merge swconfig patches * merge hotplug patches * drop 200-fix_localversion.patch - upstream * drop 222-arm_zimage_none.patch - unused * drop 252-mv_cesa_depends.patch - no longer required * drop 410-mtd-move-forward-declaration-of-struct-mtd_info.patch - unused * drop 661-fq_codel_keep_dropped_stats.patch - outdated * drop 702-phy_add_aneg_done_function.patch - upstream * drop 840-rtc7301.patch - unused * drop 841-rtc_pt7c4338.patch - upstream * drop 921-use_preinit_as_init.patch - unused * drop spio-gpio-old and gpio-mmc - unused Signed-off-by: John Crispin <john@phrozen.org>
Diffstat (limited to 'target/linux/generic/patches-3.18/667-ipv6-Fixed-source-specific-default-route-handling.patch')
-rw-r--r--target/linux/generic/patches-3.18/667-ipv6-Fixed-source-specific-default-route-handling.patch96
1 files changed, 0 insertions, 96 deletions
diff --git a/target/linux/generic/patches-3.18/667-ipv6-Fixed-source-specific-default-route-handling.patch b/target/linux/generic/patches-3.18/667-ipv6-Fixed-source-specific-default-route-handling.patch
deleted file mode 100644
index 0c951069c2..0000000000
--- a/target/linux/generic/patches-3.18/667-ipv6-Fixed-source-specific-default-route-handling.patch
+++ /dev/null
@@ -1,96 +0,0 @@
-From e16e888b525503be05b3aea64190e8b3bdef44d0 Mon Sep 17 00:00:00 2001
-From: Markus Stenberg <markus.stenberg@iki.fi>
-Date: Tue, 5 May 2015 13:36:59 +0300
-Subject: [PATCH] ipv6: Fixed source specific default route handling.
-
-If there are only IPv6 source specific default routes present, the
-host gets -ENETUNREACH on e.g. connect() because ip6_dst_lookup_tail
-calls ip6_route_output first, and given source address any, it fails,
-and ip6_route_get_saddr is never called.
-
-The change is to use the ip6_route_get_saddr, even if the initial
-ip6_route_output fails, and then doing ip6_route_output _again_ after
-we have appropriate source address available.
-
-Note that this is '99% fix' to the problem; a correct fix would be to
-do route lookups only within addrconf.c when picking a source address,
-and never call ip6_route_output before source address has been
-populated.
-
-Signed-off-by: Markus Stenberg <markus.stenberg@iki.fi>
-Signed-off-by: David S. Miller <davem@davemloft.net>
----
- net/ipv6/ip6_output.c | 39 +++++++++++++++++++++++++++++++--------
- net/ipv6/route.c | 5 +++--
- 2 files changed, 34 insertions(+), 10 deletions(-)
-
---- a/net/ipv6/ip6_output.c
-+++ b/net/ipv6/ip6_output.c
-@@ -903,21 +903,45 @@ static int ip6_dst_lookup_tail(struct so
- #endif
- int err;
-
-- if (*dst == NULL)
-- *dst = ip6_route_output(net, sk, fl6);
--
-- if ((err = (*dst)->error))
-- goto out_err_release;
-+ /* The correct way to handle this would be to do
-+ * ip6_route_get_saddr, and then ip6_route_output; however,
-+ * the route-specific preferred source forces the
-+ * ip6_route_output call _before_ ip6_route_get_saddr.
-+ *
-+ * In source specific routing (no src=any default route),
-+ * ip6_route_output will fail given src=any saddr, though, so
-+ * that's why we try it again later.
-+ */
-+ if (ipv6_addr_any(&fl6->saddr) && (!*dst || !(*dst)->error)) {
-+ struct rt6_info *rt;
-+ bool had_dst = *dst != NULL;
-
-- if (ipv6_addr_any(&fl6->saddr)) {
-- struct rt6_info *rt = (struct rt6_info *) *dst;
-+ if (!had_dst)
-+ *dst = ip6_route_output(net, sk, fl6);
-+ rt = (*dst)->error ? NULL : (struct rt6_info *)*dst;
- err = ip6_route_get_saddr(net, rt, &fl6->daddr,
- sk ? inet6_sk(sk)->srcprefs : 0,
- &fl6->saddr);
- if (err)
- goto out_err_release;
-+
-+ /* If we had an erroneous initial result, pretend it
-+ * never existed and let the SA-enabled version take
-+ * over.
-+ */
-+ if (!had_dst && (*dst)->error) {
-+ dst_release(*dst);
-+ *dst = NULL;
-+ }
- }
-
-+ if (!*dst)
-+ *dst = ip6_route_output(net, sk, fl6);
-+
-+ err = (*dst)->error;
-+ if (err)
-+ goto out_err_release;
-+
- #ifdef CONFIG_IPV6_OPTIMISTIC_DAD
- /*
- * Here if the dst entry we've looked up
---- a/net/ipv6/route.c
-+++ b/net/ipv6/route.c
-@@ -2182,9 +2182,10 @@ int ip6_route_get_saddr(struct net *net,
- unsigned int prefs,
- struct in6_addr *saddr)
- {
-- struct inet6_dev *idev = ip6_dst_idev((struct dst_entry *)rt);
-+ struct inet6_dev *idev =
-+ rt ? ip6_dst_idev((struct dst_entry *)rt) : NULL;
- int err = 0;
-- if (rt->rt6i_prefsrc.plen)
-+ if (rt && rt->rt6i_prefsrc.plen)
- *saddr = rt->rt6i_prefsrc.addr;
- else
- err = ipv6_dev_get_saddr(net, idev ? idev->dev : NULL,