linux-toradex.git/net/ipv6/ip6_flowlabel.c, branch v3.16.3

net: ipv6: Introduce ip6_sk_dst_hoplimit.

2014-04-30T17:31:26+00:00

This replaces 6 identical code snippets with a call to a new
static inline function.

Signed-off-by: Lorenzo Colitti 
Signed-off-by: David S. Miller

ipv6: remove some unused include in flowlabel

2014-02-18T23:11:05+00:00

These include are here since kernel 2.2.7, but probably never used.

Signed-off-by: Florent Fourcot 
Signed-off-by: David S. Miller

ipv6: add flowlabel_consistency sysctl

2014-01-20T01:12:31+00:00

With the introduction of IPV6_FL_F_REFLECT, there is no guarantee of
flow label unicity. This patch introduces a new sysctl to protect the old
behaviour, enable by default.

Changelog of V3:
 * rename ip6_flowlabel_consistency to flowlabel_consistency
 * use net_info_ratelimited()
 * checkpatch cleanups

Signed-off-by: Florent Fourcot 
Acked-by: Hannes Frederic Sowa 
Signed-off-by: David S. Miller

ipv6: add a flag to get the flow label used remotly

2014-01-20T01:12:31+00:00

This information is already available via IPV6_FLOWINFO
of IPV6_2292PKTOPTIONS, and them a filtering to get the flow label
information. But it is probably logical and easier for users to add this
here, and to control both sent/received flow label values with the
IPV6_FLOWLABEL_MGR option.

Signed-off-by: Florent Fourcot 
Acked-by: Hannes Frederic Sowa 
Signed-off-by: David S. Miller

ipv6: add the IPV6_FL_F_REFLECT flag to IPV6_FL_A_GET

2014-01-20T01:12:31+00:00

With this option, the socket will reply with the flow label value read
on received packets.

The goal is to have a connection with the same flow label in both
direction of the communication.

Changelog of V4:
 * Do not erase the flow label on the listening socket. Use pktopts to
 store the received value

Signed-off-by: Florent Fourcot 
Acked-by: Hannes Frederic Sowa 
Signed-off-by: David S. Miller

net: replace macros net_random and net_srandom with direct calls to prandom

2014-01-14T23:15:25+00:00

This patch removes the net_random and net_srandom macros and replaces
them with direct calls to the prandom ones. As new commits only seem to
use prandom_u32 there is no use to keep them around.
This change makes it easier to grep for users of prandom_u32.

Signed-off-by: Aruna-Hewapathirane 
Suggested-by: Hannes Frederic Sowa 
Acked-by: Hannes Frederic Sowa 
Signed-off-by: David S. Miller

ipv6: protect for_each_sk_fl_rcu in mem_check with rcu_read_lock_bh

2013-11-11T06:25:28+00:00

Fixes a suspicious rcu derference warning.

Cc: Florent Fourcot 
Signed-off-by: Hannes Frederic Sowa 
Signed-off-by: David S. Miller

ipv6: protect flow label renew against GC

2013-11-08T18:44:15+00:00

Take ip6_fl_lock before to read and update
a label.

v2: protect only the relevant code

Reported-by: Hannes Frederic Sowa 
Signed-off-by: Florent Fourcot 
Acked-by: Hannes Frederic Sowa 
Signed-off-by: David S. Miller

ipv6: increase maximum lifetime of flow labels

2013-11-08T18:43:52+00:00

If the last RFC 6437 does not give any constraints
for lifetime of flow labels, the previous RFC 3697
spoke of a minimum of 120 seconds between
reattribution of a flow label.

The maximum linger is currently set to 60 seconds
and does not allow this configuration without
CAP_NET_ADMIN right.

This patch increase the maximum linger to 150
seconds, allowing more flexibility to standard
users.

Signed-off-by: Florent Fourcot 
Acked-by: Hannes Frederic Sowa 
Signed-off-by: David S. Miller

ipv6: enable IPV6_FLOWLABEL_MGR for getsockopt

2013-11-08T18:42:57+00:00

It is already possible to set/put/renew a label
with IPV6_FLOWLABEL_MGR and setsockopt. This patch
add the possibility to get information about this
label (current value, time before expiration, etc).

It helps application to take decision for a renew
or a release of the label.

v2:
 * Add spin_lock to prevent race condition
 * return -ENOENT if no result found
 * check if flr_action is GET

v3:
 * move the spin_lock to protect only the
   relevant code

Signed-off-by: Florent Fourcot 
Acked-by: Hannes Frederic Sowa 
Signed-off-by: David S. Miller