linux.git/include/net, branch v4.6-rc3

Merge tag 'mac80211-for-davem-2016-04-06' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211

2016-04-08T20:41:28+00:00

Johannes Berg says:

====================
For the current RC series, we have the following fixes:
 * TDLS fixes from Arik and Ilan
 * rhashtable fixes from Ben and myself
 * documentation fixes from Luis
 * U-APSD fixes from Emmanuel
 * a TXQ fix from Felix
 * and a compiler warning suppression from Jeff
====================

Signed-off-by: David S. Miller

net_sched: fix a memory leak in tc action

2016-04-06T20:04:29+00:00

Fixes: ddf97ccdd7cb ("net_sched: add network namespace support for tc actions")
Reported-by: Dmitry Vyukov 
Tested-by: Dmitry Vyukov 
Cc: Jamal Hadi Salim 
Signed-off-by: Cong Wang 
Signed-off-by: David S. Miller

sctp: use list_* in sctp_list_dequeue

2016-04-05T19:44:08+00:00

Use list_* helpers in sctp_list_dequeue, more readable.

Signed-off-by: Marcelo Ricardo Leitner 
Signed-off-by: David S. Miller

mac80211: add doc for RX_FLAG_DUP_VALIDATED flag

2016-04-05T09:10:59+00:00

Add documentation for the flag for duplication check.

Fixes the following warning when running make htmldocs:
warning: Enum value 'RX_FLAG_DUP_VALIDATED' not described in enum 'mac80211_rx_flags'

Signed-off-by: Luis de Bethencourt 
[fix description]
Signed-off-by: Johannes Berg

net: ping: make ping_v6_sendmsg static

2016-03-24T02:09:58+00:00

As ping_v6_sendmsg is used only in this file,
making it static

The body of "pingv6_prot" and "pingv6_protosw" were
moved at the middle of the file, to avoid having to
declare some static prototypes.

Signed-off-by: Haishuang Yan 
Signed-off-by: David S. Miller

ipv6: remove unused in6_addr struct

2016-03-22T19:45:44+00:00

struct in6_addr isn't used anymore in inet6_connection_sock.h, removing
the forward declaration.

Fixes: 1b33bc3e9e90 ("ipv6: remove obsolete inet6 functions")
Signed-off-by: Luis de Bethencourt 
Signed-off-by: David S. Miller

vxlan: fix sparse warnings

2016-03-21T17:30:02+00:00

Sparse reports false positives for the header manipulation inlines. Annotate
them correctly.

Tested by sparse on a little endian and big endian machine.

Fixes: 54bfd872bf16d ("vxlan: keep flags and vni in network byte order")
Reported-by: kbuild test robot 
Signed-off-by: Jiri Benc 
Signed-off-by: David S. Miller

tunnels: Remove encapsulation offloads on decap.

2016-03-20T20:33:40+00:00

If a packet is either locally encapsulated or processed through GRO
it is marked with the offloads that it requires. However, when it is
decapsulated these tunnel offload indications are not removed. This
means that if we receive an encapsulated TCP packet, aggregate it with
GRO, decapsulate, and retransmit the resulting frame on a NIC that does
not support encapsulation, we won't be able to take advantage of hardware
offloads even though it is just a simple TCP packet at this point.

This fixes the problem by stripping off encapsulation offload indications
when packets are decapsulated.

The performance impacts of this bug are significant. In a test where a
Geneve encapsulated TCP stream is sent to a hypervisor, GRO'ed, decapsulated,
and bridged to a VM performance is improved by 60% (5Gbps->8Gbps) as a
result of avoiding unnecessary segmentation at the VM tap interface.

Reported-by: Ramu Ramamurthy 
Fixes: 68c33163 ("v4 GRE: Add TCP segmentation offload for GRE")
Signed-off-by: Jesse Gross 
Signed-off-by: David S. Miller

sctp: keep fragmentation point aligned to word size

2016-03-20T20:31:12+00:00

If the user supply a different fragmentation point or if there is a
network header that cause it to not be aligned, force it to be aligned.

Fragmentation point at a value that is not aligned is not optimal.  It
causes extra padding to be used and has just no pros.

v2:
 - Make use of the new WORD_TRUNC macro

Signed-off-by: Marcelo Ricardo Leitner 
Signed-off-by: David S. Miller

sctp: align MTU to a word

2016-03-20T20:31:12+00:00

SCTP is a protocol that is aligned to a word (4 bytes). Thus using bare
MTU can sometimes return values that are not aligned, like for loopback,
which is 65536 but ipv4_mtu() limits that to 65535. This mis-alignment
will cause the last non-aligned bytes to never be used and can cause
issues with congestion control.

So it's better to just consider a lower MTU and keep congestion control
calcs saner as they are based on PMTU.

Same applies to icmp frag needed messages, which is also fixed by this
patch.

One other effect of this is the inability to send MTU-sized packet
without queueing or fragmentation and without hitting Nagle. As the
check performed at sctp_packet_can_append_data():

if (chunk->skb->len + q->out_qlen >= transport->pathmtu - packet->overhead)
	/* Enough data queued to fill a packet */
	return SCTP_XMIT_OK;

with the above example of MTU, if there are no other messages queued,
one cannot send a packet that just fits one packet (65532 bytes) and
without causing DATA chunk fragmentation or a delay.

v2:
 - Added WORD_TRUNC macro

Signed-off-by: Marcelo Ricardo Leitner 
Signed-off-by: David S. Miller