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Xin Long b7999b0772 ipv6: fix the check before getting the cookie in rt6_get_cookie 
In Jianlin's testing, netperf was broken with 'Connection reset by peer',
as the cookie check failed in rt6_check() and ip6_dst_check() always
returned NULL.

It's caused by Commit 93531c6743 ("net/ipv6: separate handling of FIB
entries from dst based routes"), where the cookie can be got only when
'c1'(see below) for setting dst_cookie whereas rt6_check() is called
when !'c1' for checking dst_cookie, as we can see in ip6_dst_check().

Since in ip6_dst_check() both rt6_dst_from_check() (c1) and rt6_check()
(!c1) will check the 'from' cookie, this patch is to remove the c1 check
in rt6_get_cookie(), so that the dst_cookie can always be set properly.

c1:
  (rt->rt6i_flags & RTF_PCPU || unlikely(!list_empty(&rt->rt6i_uncached)))

Fixes: 93531c6743 ("net/ipv6: separate handling of FIB entries from dst based routes")
Reported-by: Jianlin Shi <jishi@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2019-06-05 17:00:29 -07:00
..
acpi More ACPI updates for 5.2-rc1 2019-05-15 08:58:49 -07:00
asm-generic treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 47 2019-05-24 17:27:13 +02:00
clocksource
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crypto treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36 2019-05-24 17:27:11 +02:00
drm drm pull request for 5.2 2019-05-08 21:35:19 -07:00
dt-bindings treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
keys treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36 2019-05-24 17:27:11 +02:00
kvm
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linux net: dsa: sja1105: Don't store frame type in skb->cb 2019-05-31 14:27:27 -07:00
math-emu
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media treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
memory
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misc treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
net ipv6: fix the check before getting the cookie in rt6_get_cookie 2019-06-05 17:00:29 -07:00
pcmcia
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ras
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rdma RDMA: Add EFA related definitions 2019-05-06 13:47:50 -03:00
scsi treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 59 2019-05-24 17:36:44 +02:00
soc Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-05-19 11:11:20 -07:00
sound treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
target scsi: target/iscsi: Handle too large immediate data buffers correctly 2019-04-12 20:20:06 -04:00
trace treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36 2019-05-24 17:27:11 +02:00
uapi SPDX update for 5.2-rc2, round 2 2019-05-24 14:31:58 -07:00
video treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 27 2019-05-24 17:27:10 +02:00
xen
…