linux-toradex.git/include/net/inet_frag.h, branch v3.7

ipv6: unify fragment thresh handling code

2012-09-19T21:23:28+00:00

Cc: Herbert Xu 
Cc: Michal Kubeček 
Cc: David Miller 
Signed-off-by: Cong Wang 
Signed-off-by: David S. Miller

ipv4: fix path MTU discovery with connection tracking

2012-08-26T17:13:55+00:00

IPv4 conntrack defragments incoming packet at the PRE_ROUTING hook and
(in case of forwarded packets) refragments them at POST_ROUTING
independent of the IP_DF flag. Refragmentation uses the dst_mtu() of
the local route without caring about the original fragment sizes,
thereby breaking PMTUD.

This patch fixes this by keeping track of the largest received fragment
with IP_DF set and generates an ICMP fragmentation required error during
refragmentation if that size exceeds the MTU.

Signed-off-by: Patrick McHardy 
Acked-by: Eric Dumazet 
Acked-by: David S. Miller

ip_frag: struct inet_frags match() method returns a bool

2012-05-18T05:40:27+00:00

- match() method returns a boolean
- return (A && B && C && D) -> return A && B && C && D
- fix indentation

Signed-off-by: Eric Dumazet

fragment: add fast path for in-order fragments

2010-06-30T20:44:29+00:00

add fast path for in-order fragments

As the fragments are sent in order in most of OSes, such as Windows, Darwin and
FreeBSD, it is likely the new fragments are at the end of the inet_frag_queue.
In the fast path, we check if the skb at the end of the inet_frag_queue is the
prev we expect.

Signed-off-by: Changli Gao 
----
 include/net/inet_frag.h |    1 +
 net/ipv4/ip_fragment.c  |   12 ++++++++++++
 net/ipv6/reassembly.c   |   11 +++++++++++
 3 files changed, 24 insertions(+)
Signed-off-by: David S. Miller

inet fragments: fix sparse warning: context imbalance

2009-02-27T07:13:35+00:00

Impact: Attribute function with __releases(...)

Fix this sparse warning:
  net/ipv4/inet_fragment.c:276:35: warning: context imbalance in 'inet_frag_find' - unexpected unlock

Signed-off-by: Hannes Eder 
Signed-off-by: David S. Miller

[NET]: Rename inet_frag.h identifiers COMPLETE, FIRST_IN, LAST_IN to INET_FRAG_*

2008-03-28T23:35:27+00:00

On Fri, 2008-03-28 at 03:24 -0700, Andrew Morton wrote:
> they should all be renamed.

Done for include/net and net

Signed-off-by: Joe Perches 
Signed-off-by: David S. Miller

[NETNS][FRAGS]: Make the pernet subsystem for fragments.

2008-01-28T23:10:40+00:00

On namespace start we mainly prepare the ctl variables.

When the namespace is stopped we have to kill all the fragments that
point to this namespace.  The inet_frags_exit_net() handles it.

Signed-off-by: Pavel Emelyanov 
Signed-off-by: David S. Miller

[NETNS][FRAGS]: Make the LRU list per namespace.

2008-01-28T23:10:39+00:00

The inet_frags.lru_list is used for evicting only, so we have
to make it per-namespace, to evict only those fragments, who's
namespace exceeded its high threshold, but not the whole hash.
Besides, this helps to avoid long loops  in evictor.

The spinlock is not per-namespace because it protects the
hash table as well, which is global.

Signed-off-by: Pavel Emelyanov 
Signed-off-by: David S. Miller

[NETNS][FRAGS]: Isolate the secret interval from namespaces.

2008-01-28T23:10:39+00:00

Since we have one hashtable to lookup the fragment, having
different secret_interval-s for hash rebuild doesn't make
sense, so move this one to inet_frags.

The inet_frags_ctl becomes empty after this, so remove it.
The appropriate ctl table is kept read-only in namespaces.

Signed-off-by: Pavel Emelyanov 
Signed-off-by: David S. Miller

[NETNS][FRAGS]: Make thresholds work in namespaces.

2008-01-28T23:10:38+00:00

This is the same as with the timeout variable.

Currently, after exceeding the high threshold _all_
the fragments are evicted, but it will be fixed in
later patch.

Signed-off-by: Pavel Emelyanov 
Signed-off-by: David S. Miller