linux-stable.git/net/ipv6/route.c, branch linux-3.7.y

ipv6: do not create neighbor entries for local delivery

2013-02-14T18:48:18+00:00

[ Upstream commit bd30e947207e2ea0ff2c08f5b4a03025ddce48d3 ]

They will be created at output, if ever needed. This avoids creating
empty neighbor entries when TPROXYing/Forwarding packets for addresses
that are not even directly reachable.

Note that IPv4 already handles it this way. No neighbor entries are
created for local input.

Tested by myself and customer.

Signed-off-by: Jiri Pirko 
Signed-off-by: Marcelo Ricardo Leitner 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

ipv6: Set default hoplimit as zero.

2012-10-25T03:14:17+00:00

Commit a02e4b7dae4551(Demark default hoplimit as zero) only changes the
hoplimit checking condition and default value in ip6_dst_hoplimit, not
zeros all hoplimit default value.

Keep the zeroing ip6_template_metrics[RTAX_HOPLIMIT - 1] to force it as
const, cause as a37e6e344910(net: force dst_default_metrics to const
section)

Signed-off-by: Li RongQing 
Signed-off-by: David S. Miller

ipv6: release reference of ip6_null_entry's dst entry in __ip6_del_rt

2012-10-04T20:00:07+00:00

as we hold dst_entry before we call __ip6_del_rt,
so we should alse call dst_release not only return
-ENOENT when the rt6_info is ip6_null_entry.

and we already hold the dst entry, so I think it's
safe to call dst_release out of the write-read lock.

Signed-off-by: Gao feng 
Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2012-09-28T18:40:49+00:00

Conflicts:
	drivers/net/team/team.c
	drivers/net/usb/qmi_wwan.c
	net/batman-adv/bat_iv_ogm.c
	net/ipv4/fib_frontend.c
	net/ipv4/route.c
	net/l2tp/l2tp_netlink.c

The team, fib_frontend, route, and l2tp_netlink conflicts were simply
overlapping changes.

qmi_wwan and bat_iv_ogm were of the "use HEAD" variety.

With help from Antonio Quartulli.

Signed-off-by: David S. Miller

ipv6: recursive check rt->dst.from when call rt6_check_expired

2012-09-19T19:35:33+00:00

If dst cache dst_a copies from dst_b, and dst_b copies from dst_c, check
if dst_a is expired or not, we should not end with dst_a->dst.from, dst_b,
we should check dst_c.

CC: Gao feng 
Signed-off-by: Li RongQing 
Signed-off-by: David S. Miller

ipv6: use DST_* macro to set obselete field

2012-09-18T19:57:04+00:00

Signed-off-by: Nicolas Dichtel 
Acked-by: Eric Dumazet 
Signed-off-by: David S. Miller

ipv6: use net->rt_genid to check dst validity

2012-09-18T19:57:03+00:00

IPv6 dst should take care of rt_genid too. When a xfrm policy is inserted or
deleted, all dst should be invalidated.
To force the validation, dst entries should be created with ->obsolete set to
DST_OBSOLETE_FORCE_CHK. This was already the case for all functions calling
ip6_dst_alloc(), except for ip6_rt_copy().

As a consequence, we can remove the specific code in inet6_connection_sock.

Signed-off-by: Nicolas Dichtel 
Signed-off-by: David S. Miller

ipv6: replace write lock with read lock when get route info

2012-09-13T20:53:46+00:00

geting route info does not write rt->rt6i_table, so replace
write lock with read lock

Suggested-by: Eric Dumazet 
Signed-off-by: Li RongQing 
Signed-off-by: Eric Dumazet 
Signed-off-by: David S. Miller

ipv6: route templates can be const

2012-09-13T20:52:55+00:00

We kmemdup() templates, so they can be const.

Signed-off-by: Eric Dumazet 
Signed-off-by: David S. Miller

ipv6: remove some useless RCU read lock

2012-09-10T20:31:18+00:00

After this commit:
	commit 97cac0821af4474ec4ba3a9e7a36b98ed9b6db88
	Author: David S. Miller 
	Date:   Mon Jul 2 22:43:47 2012 -0700

	    ipv6: Store route neighbour in rt6_info struct.

we no longer use RCU to protect route neighbour.

Cc: "David S. Miller" 
Signed-off-by: Cong Wang 
Signed-off-by: David S. Miller