firefly-linux-kernel-4.4.55.git
10 years agoip_vti: fix sparse warnings for VTI_ISVTI
Dmitry Popov [Wed, 11 Jun 2014 11:09:14 +0000 (15:09 +0400)]
ip_vti: fix sparse warnings for VTI_ISVTI

This patch fixes the following sparse warnings:

net/ipv4/ip_tunnel.c:245:53: warning: restricted __be16 degrades to integer
net/ipv4/ip_vti.c:321:19: warning: incorrect type in assignment (different base types)
net/ipv4/ip_vti.c:321:19:    expected restricted __be16 [addressable] [assigned] [usertype] i_flags
net/ipv4/ip_vti.c:321:19:    got int
net/ipv4/ip_vti.c:447:24: warning: incorrect type in assignment (different base types)
net/ipv4/ip_vti.c:447:24:    expected restricted __be16 [usertype] i_flags
net/ipv4/ip_vti.c:447:24:    got int

Since VTI_ISVTI is always used with ip_tunnel_parm->i_flags (which is __be16),
we can __force cast VTI_ISVTI to __be16 in header file.

Signed-off-by: Dmitry Popov <ixaphire@qrator.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agodrivers: net: davinci_cpdma: double free on error
Dan Carpenter [Wed, 11 Jun 2014 08:16:51 +0000 (11:16 +0300)]
drivers: net: davinci_cpdma: double free on error

We recently change the kzalloc() to devm_kzalloc() so freeing "ctlr"
here could lead to a double free.

Fixes: e194312854ed ('drivers: net: davinci_cpdma: Convert kzalloc() to devm_kzalloc().')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoamd-xgbe: unwind on error in xgbe_mdio_register()
Dan Carpenter [Wed, 11 Jun 2014 06:56:26 +0000 (09:56 +0300)]
amd-xgbe: unwind on error in xgbe_mdio_register()

There is a typo here so we return directly instead of unwinding.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agomrf24j40: add device managed APIs
Varka Bhadram [Wed, 11 Jun 2014 04:34:44 +0000 (10:04 +0530)]
mrf24j40: add device managed APIs

adds the device managed APIs so that no need worry about
freeing the resources.

Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoceph: remove bogus extern
stephen hemminger [Wed, 11 Jun 2014 03:30:13 +0000 (20:30 -0700)]
ceph: remove bogus extern

Sparse complained about this bogus extern on definition of
a function.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: filter: document internal instruction encoding
Alexei Starovoitov [Tue, 10 Jun 2014 15:44:07 +0000 (17:44 +0200)]
net: filter: document internal instruction encoding

This patch adds a description of eBPFs instruction encoding in order
to bring the documentation in line with the implementation.

Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: filter: mention eBPF terminology as well
Alexei Starovoitov [Tue, 10 Jun 2014 15:44:06 +0000 (17:44 +0200)]
net: filter: mention eBPF terminology as well

Since the term eBPF is used anyway on mailing list discussions, lets
also document that in the main BPF documentation file and replace a
couple of occurrences with eBPF terminology to be more clear.

Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoipv4: fix a race in ip4_datagram_release_cb()
Eric Dumazet [Tue, 10 Jun 2014 13:43:01 +0000 (06:43 -0700)]
ipv4: fix a race in ip4_datagram_release_cb()

Alexey gave a AddressSanitizer[1] report that finally gave a good hint
at where was the origin of various problems already reported by Dormando
in the past [2]

Problem comes from the fact that UDP can have a lockless TX path, and
concurrent threads can manipulate sk_dst_cache, while another thread,
is holding socket lock and calls __sk_dst_set() in
ip4_datagram_release_cb() (this was added in linux-3.8)

It seems that all we need to do is to use sk_dst_check() and
sk_dst_set() so that all the writers hold same spinlock
(sk->sk_dst_lock) to prevent corruptions.

TCP stack do not need this protection, as all sk_dst_cache writers hold
the socket lock.

[1]
https://code.google.com/p/address-sanitizer/wiki/AddressSanitizerForKernel

AddressSanitizer: heap-use-after-free in ipv4_dst_check
Read of size 2 by thread T15453:
 [<ffffffff817daa3a>] ipv4_dst_check+0x1a/0x90 ./net/ipv4/route.c:1116
 [<ffffffff8175b789>] __sk_dst_check+0x89/0xe0 ./net/core/sock.c:531
 [<ffffffff81830a36>] ip4_datagram_release_cb+0x46/0x390 ??:0
 [<ffffffff8175eaea>] release_sock+0x17a/0x230 ./net/core/sock.c:2413
 [<ffffffff81830882>] ip4_datagram_connect+0x462/0x5d0 ??:0
 [<ffffffff81846d06>] inet_dgram_connect+0x76/0xd0 ./net/ipv4/af_inet.c:534
 [<ffffffff817580ac>] SYSC_connect+0x15c/0x1c0 ./net/socket.c:1701
 [<ffffffff817596ce>] SyS_connect+0xe/0x10 ./net/socket.c:1682
 [<ffffffff818b0a29>] system_call_fastpath+0x16/0x1b
./arch/x86/kernel/entry_64.S:629

Freed by thread T15455:
 [<ffffffff8178d9b8>] dst_destroy+0xa8/0x160 ./net/core/dst.c:251
 [<ffffffff8178de25>] dst_release+0x45/0x80 ./net/core/dst.c:280
 [<ffffffff818304c1>] ip4_datagram_connect+0xa1/0x5d0 ??:0
 [<ffffffff81846d06>] inet_dgram_connect+0x76/0xd0 ./net/ipv4/af_inet.c:534
 [<ffffffff817580ac>] SYSC_connect+0x15c/0x1c0 ./net/socket.c:1701
 [<ffffffff817596ce>] SyS_connect+0xe/0x10 ./net/socket.c:1682
 [<ffffffff818b0a29>] system_call_fastpath+0x16/0x1b
./arch/x86/kernel/entry_64.S:629

Allocated by thread T15453:
 [<ffffffff8178d291>] dst_alloc+0x81/0x2b0 ./net/core/dst.c:171
 [<ffffffff817db3b7>] rt_dst_alloc+0x47/0x50 ./net/ipv4/route.c:1406
 [<     inlined    >] __ip_route_output_key+0x3e8/0xf70
__mkroute_output ./net/ipv4/route.c:1939
 [<ffffffff817dde08>] __ip_route_output_key+0x3e8/0xf70 ./net/ipv4/route.c:2161
 [<ffffffff817deb34>] ip_route_output_flow+0x14/0x30 ./net/ipv4/route.c:2249
 [<ffffffff81830737>] ip4_datagram_connect+0x317/0x5d0 ??:0
 [<ffffffff81846d06>] inet_dgram_connect+0x76/0xd0 ./net/ipv4/af_inet.c:534
 [<ffffffff817580ac>] SYSC_connect+0x15c/0x1c0 ./net/socket.c:1701
 [<ffffffff817596ce>] SyS_connect+0xe/0x10 ./net/socket.c:1682
 [<ffffffff818b0a29>] system_call_fastpath+0x16/0x1b
./arch/x86/kernel/entry_64.S:629

[2]
<4>[196727.311203] general protection fault: 0000 [#1] SMP
<4>[196727.311224] Modules linked in: xt_TEE xt_dscp xt_DSCP macvlan bridge coretemp crc32_pclmul ghash_clmulni_intel gpio_ich microcode ipmi_watchdog ipmi_devintf sb_edac edac_core lpc_ich mfd_core tpm_tis tpm tpm_bios ipmi_si ipmi_msghandler isci igb libsas i2c_algo_bit ixgbe ptp pps_core mdio
<4>[196727.311333] CPU: 17 PID: 0 Comm: swapper/17 Not tainted 3.10.26 #1
<4>[196727.311344] Hardware name: Supermicro X9DRi-LN4+/X9DR3-LN4+/X9DRi-LN4+/X9DR3-LN4+, BIOS 3.0 07/05/2013
<4>[196727.311364] task: ffff885e6f069700 ti: ffff885e6f072000 task.ti: ffff885e6f072000
<4>[196727.311377] RIP: 0010:[<ffffffff815f8c7f>]  [<ffffffff815f8c7f>] ipv4_dst_destroy+0x4f/0x80
<4>[196727.311399] RSP: 0018:ffff885effd23a70  EFLAGS: 00010282
<4>[196727.311409] RAX: dead000000200200 RBX: ffff8854c398ecc0 RCX: 0000000000000040
<4>[196727.311423] RDX: dead000000100100 RSI: dead000000100100 RDI: dead000000200200
<4>[196727.311437] RBP: ffff885effd23a80 R08: ffffffff815fd9e0 R09: ffff885d5a590800
<4>[196727.311451] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
<4>[196727.311464] R13: ffffffff81c8c280 R14: 0000000000000000 R15: ffff880e85ee16ce
<4>[196727.311510] FS:  0000000000000000(0000) GS:ffff885effd20000(0000) knlGS:0000000000000000
<4>[196727.311554] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[196727.311581] CR2: 00007a46751eb000 CR3: 0000005e65688000 CR4: 00000000000407e0
<4>[196727.311625] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
<4>[196727.311669] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
<4>[196727.311713] Stack:
<4>[196727.311733]  ffff8854c398ecc0 ffff8854c398ecc0 ffff885effd23ab0 ffffffff815b7f42
<4>[196727.311784]  ffff88be6595bc00 ffff8854c398ecc0 0000000000000000 ffff8854c398ecc0
<4>[196727.311834]  ffff885effd23ad0 ffffffff815b86c6 ffff885d5a590800 ffff8816827821c0
<4>[196727.311885] Call Trace:
<4>[196727.311907]  <IRQ>
<4>[196727.311912]  [<ffffffff815b7f42>] dst_destroy+0x32/0xe0
<4>[196727.311959]  [<ffffffff815b86c6>] dst_release+0x56/0x80
<4>[196727.311986]  [<ffffffff81620bd5>] tcp_v4_do_rcv+0x2a5/0x4a0
<4>[196727.312013]  [<ffffffff81622b5a>] tcp_v4_rcv+0x7da/0x820
<4>[196727.312041]  [<ffffffff815fd9e0>] ? ip_rcv_finish+0x360/0x360
<4>[196727.312070]  [<ffffffff815de02d>] ? nf_hook_slow+0x7d/0x150
<4>[196727.312097]  [<ffffffff815fd9e0>] ? ip_rcv_finish+0x360/0x360
<4>[196727.312125]  [<ffffffff815fda92>] ip_local_deliver_finish+0xb2/0x230
<4>[196727.312154]  [<ffffffff815fdd9a>] ip_local_deliver+0x4a/0x90
<4>[196727.312183]  [<ffffffff815fd799>] ip_rcv_finish+0x119/0x360
<4>[196727.312212]  [<ffffffff815fe00b>] ip_rcv+0x22b/0x340
<4>[196727.312242]  [<ffffffffa0339680>] ? macvlan_broadcast+0x160/0x160 [macvlan]
<4>[196727.312275]  [<ffffffff815b0c62>] __netif_receive_skb_core+0x512/0x640
<4>[196727.312308]  [<ffffffff811427fb>] ? kmem_cache_alloc+0x13b/0x150
<4>[196727.312338]  [<ffffffff815b0db1>] __netif_receive_skb+0x21/0x70
<4>[196727.312368]  [<ffffffff815b0fa1>] netif_receive_skb+0x31/0xa0
<4>[196727.312397]  [<ffffffff815b1ae8>] napi_gro_receive+0xe8/0x140
<4>[196727.312433]  [<ffffffffa00274f1>] ixgbe_poll+0x551/0x11f0 [ixgbe]
<4>[196727.312463]  [<ffffffff815fe00b>] ? ip_rcv+0x22b/0x340
<4>[196727.312491]  [<ffffffff815b1691>] net_rx_action+0x111/0x210
<4>[196727.312521]  [<ffffffff815b0db1>] ? __netif_receive_skb+0x21/0x70
<4>[196727.312552]  [<ffffffff810519d0>] __do_softirq+0xd0/0x270
<4>[196727.312583]  [<ffffffff816cef3c>] call_softirq+0x1c/0x30
<4>[196727.312613]  [<ffffffff81004205>] do_softirq+0x55/0x90
<4>[196727.312640]  [<ffffffff81051c85>] irq_exit+0x55/0x60
<4>[196727.312668]  [<ffffffff816cf5c3>] do_IRQ+0x63/0xe0
<4>[196727.312696]  [<ffffffff816c5aaa>] common_interrupt+0x6a/0x6a
<4>[196727.312722]  <EOI>
<1>[196727.313071] RIP  [<ffffffff815f8c7f>] ipv4_dst_destroy+0x4f/0x80
<4>[196727.313100]  RSP <ffff885effd23a70>
<4>[196727.313377] ---[ end trace 64b3f14fae0f2e29 ]---
<0>[196727.380908] Kernel panic - not syncing: Fatal exception in interrupt

Reported-by: Alexey Preobrazhensky <preobr@google.com>
Reported-by: dormando <dormando@rydia.ne>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Fixes: 8141ed9fcedb2 ("ipv4: Add a socket release callback for datagram sockets")
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: filter: add test_bpf module under MAINTAINERS' networking section
Daniel Borkmann [Tue, 10 Jun 2014 10:31:10 +0000 (12:31 +0200)]
net: filter: add test_bpf module under MAINTAINERS' networking section

Add lib/test_bpf.c entry to maintainers file under networking.
All changes were posted via netdev for review, so make sure
other people Cc it as well when they call get_maintainer.pl.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: add __pskb_copy_fclone and pskb_copy_for_clone
Octavian Purdila [Wed, 11 Jun 2014 22:36:26 +0000 (01:36 +0300)]
net: add __pskb_copy_fclone and pskb_copy_for_clone

There are several instances where a pskb_copy or __pskb_copy is
immediately followed by an skb_clone.

Add a couple of new functions to allow the copy skb to be allocated
from the fclone cache and thus speed up subsequent skb_clone calls.

Cc: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: Marek Lindner <mareklindner@neomailbox.ch>
Cc: Simon Wunderlich <sw@simonwunderlich.de>
Cc: Antonio Quartulli <antonio@meshcoding.com>
Cc: Marcel Holtmann <marcel@holtmann.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: Johan Hedberg <johan.hedberg@gmail.com>
Cc: Arvid Brodin <arvid.brodin@alten.se>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Cc: Lauro Ramos Venancio <lauro.venancio@openbossa.org>
Cc: Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: Jon Maloy <jon.maloy@ericsson.com>
Cc: Allan Stephens <allan.stephens@windriver.com>
Cc: Andrew Hendry <andrew.hendry@gmail.com>
Cc: Eric Dumazet <edumazet@google.com>
Reviewed-by: Christoph Paasch <christoph.paasch@uclouvain.be>
Signed-off-by: Octavian Purdila <octavian.purdila@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'bridge-next'
David S. Miller [Wed, 11 Jun 2014 22:23:03 +0000 (15:23 -0700)]
Merge branch 'bridge-next'

Toshiaki Makita says:

====================
bridge: 802.1ad vlan protocol support

Currently bridge vlan filtering doesn't work fine with 802.1ad protocol.
Only if a bridge is configured without pvid, the bridge receives only
802.1ad tagged frames and no STP is used, it will work.
Otherwise:
- If pvid is configured, it can put only 802.1Q tags but cannot put 802.1ad
  tags.
- If 802.1Q and 802.1ad tagged frames arrive in mixture, it applies filtering
  regardless of their protocols.
- While an 802.1ad bridge should use another mac address for STP BPDU and
  should forward customer's BPDU frames, it can't.
Thus, we can't properly handle frames once 802.1ad is used.

Handling 802.1ad is useful if we want to allow stacked vlans to be used,
e.g., guest VMs wants to use vlan tags and the host also wants to segregate
guest's traffic from other guests' by vlan tags.

Here is the image describing how to configure a bridge to filter VMs traffic.

         +-------+p/u   +-----+  +---------+
 +----+  |       |------|vnet0|--|User A VM|
 |eth0|--|802.1ad|      +-----+  +---------+
 +----+  |bridge |p/u   +-----+  +---------+
         |       |------|vnet1|--|User B VM|
         +-------+      +-----+  +---------+
p/u: pvid/untagged

This patch set enables us to set vlan protocols per bridge.
This tries to implement a bridge like S-VLAN component in IEEE 802.1Q-2011
spec.

Note that there is another possible implementation that sets vlan protocols
per port. Some HW switches seem to take that approach.
However, I think per-bridge approach is better, because;
- I think the typical usage of an 802.1ad bridge is segregating 802.1Q tagged
  traffic (like what is described above), and this doesn't need the ability to
  be set protocols per port. Also, If a bridge has many ports and it supports
  per-port setting, we might have to make much more extra configurations to
  change protocols of all ports.

- I assume that the main perpose to set protocol per port is to assign S-VID
  according to C-VID, or to realize two logical bridges (one is an 802.1Q
  filtering bridge and the other is an 802.1ad filtering bridge) in one bridge.
  The former usually needs additional features such as vlan id mapping, and
  is likely to make bridge's code complicated. If a user wants, such enhanced
  features can be accomplished by a combination of multiple bridges, so it is
  not absolutely necessary to implement these features in a bridge itself.
  The latter is simply unnecessary because we can easily make two bridges of
  which one is an 802.1Q bridge and the other is an 802.1ad bridge.

Here is an example of the enhanced feature that we can realize by using
multiple bridges and veth interfaces. This way is documented in
IEEE 802.1Q-2011 clause 15.4 (C-tagged service interface).

 +----+  +-------+p/u         +------+  +----+  +--+
 |eth0|--|802.1ad|----veth----|802.1Q|--|vnet|--|VM|
 +----+  |bridge |----veth----|bridge|  +----+  +--+
         +-------+p/u         +------+
p/u: pvid/untagged

In this configuration, we can map C-VIDs to any S-VID.
For example;
 C-VID 10 and 20 to S-VID 100
 C-VID 30 to S-VID 110
This is achieved through the 802.1Q bridge that forwards C-tagged frames to
proper ports of the 802.1ad bridge.

Changes:
v1 -> v2:
- Make the way to forward bridge group addresses more generic by introducing
  new mask, group_fwd_mask_required.

RFC -> v1:
- Add S-TAG tx offload.
- Remove a fix around stacked vlan which has already been fixed.
- Take into account Bridge Group Addresses.
- Separate handling of protocol-mismatch from br_vlan_get_tag().
- Change the way to set vlan_proto from netlink to sysfs because no other
  existing configuration per bridge can be set by netlink.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobridge: Support 802.1ad vlan filtering
Toshiaki Makita [Tue, 10 Jun 2014 11:59:25 +0000 (20:59 +0900)]
bridge: Support 802.1ad vlan filtering

This enables us to change the vlan protocol for vlan filtering.
We come to be able to filter frames on the basis of 802.1ad vlan tags
through a bridge.

This also changes br->group_addr if it has not been set by user.
This is needed for an 802.1ad bridge.
(See IEEE 802.1Q-2011 8.13.5.)

Furthermore, this sets br->group_fwd_mask_required so that an 802.1ad
bridge can forward the Nearest Customer Bridge group addresses except
for br->group_addr, which should be passed to higher layer.

To change the vlan protocol, write a protocol in sysfs:
# echo 0x88a8 > /sys/class/net/br0/bridge/vlan_protocol

Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobridge: Prepare for forwarding another bridge group addresses
Toshiaki Makita [Tue, 10 Jun 2014 11:59:24 +0000 (20:59 +0900)]
bridge: Prepare for forwarding another bridge group addresses

If a bridge is an 802.1ad bridge, it must forward another bridge group
addresses (the Nearest Customer Bridge group addresses).
(For details, see IEEE 802.1Q-2011 8.6.3.)

As user might not want group_fwd_mask to be modified by enabling 802.1ad,
introduce a new mask, group_fwd_mask_required, which indicates addresses
the bridge wants to forward. This will be set by enabling 802.1ad.

Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobridge: Prepare for 802.1ad vlan filtering support
Toshiaki Makita [Tue, 10 Jun 2014 11:59:23 +0000 (20:59 +0900)]
bridge: Prepare for 802.1ad vlan filtering support

This enables a bridge to have vlan protocol informantion and allows vlan
tag manipulation (retrieve, insert and remove tags) according to the vlan
protocol.

Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobridge: Add 802.1ad tx vlan acceleration
Toshiaki Makita [Tue, 10 Jun 2014 11:59:22 +0000 (20:59 +0900)]
bridge: Add 802.1ad tx vlan acceleration

Bridge device doesn't need to embed S-tag into skb->data.

Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: xen-netback: include linux/vmalloc.h again
Arnd Bergmann [Tue, 10 Jun 2014 08:34:36 +0000 (10:34 +0200)]
net: xen-netback: include linux/vmalloc.h again

commit e9ce7cb6b107 ("xen-netback: Factor queue-specific data into
queue struct") added a use of vzalloc/vfree to interface.c, but
removed the #include <linux/vmalloc.h> statement at the same time,
which causes this build error:

drivers/net/xen-netback/interface.c: In function 'xenvif_free':
drivers/net/xen-netback/interface.c:754:2: error: implicit declaration of function 'vfree' [-Werror=implicit-function-declaration]
  vfree(vif->queues);
  ^
cc1: some warnings being treated as errors

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Wei Liu <wei.liu2@citrix.com>
Cc: Andrew J. Bennieston <andrew.bennieston@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: phy: realtek: register/unregister multiple drivers properly
Jongsung Kim [Tue, 10 Jun 2014 03:50:12 +0000 (12:50 +0900)]
net: phy: realtek: register/unregister multiple drivers properly

Using phy_drivers_register/_unregister functions is proper way to
handle multiple PHY drivers registration. For Realtek PHY drivers
module, it fixes incomplete current error-handlings up and adds
missed unregistration for the RTL8201CP driver.

Signed-off-by: Jongsung Kim <neidhard.kim@lge.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: sh_eth: Fix timing of RACT setting in sh_eth_rx()
Yoshihiro Shimoda [Tue, 10 Jun 2014 00:40:24 +0000 (09:40 +0900)]
net: sh_eth: Fix timing of RACT setting in sh_eth_rx()

This patch fixes an issue that we cannot use nfs rootfs correctly
on r8a7790 when the command below runs on a host PC.

 $ sudo ping -f -l 8 $BOARD_IP_ADDR

Since the driver sets the RACT to 1 in the first while loop of
sh_eth_rx(), the controller accepts a next frame into the next RX
descriptor during the while loop. But, in the first while loop
doesn't allocate a next skb. So, this patch removes the RACT setting
in the first while loop of sh_eth_rx().

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: sh_eth: Fix receive packet "exceeded" condition in sh_eth_rx()
Yoshihiro Shimoda [Tue, 10 Jun 2014 00:40:14 +0000 (09:40 +0900)]
net: sh_eth: Fix receive packet "exceeded" condition in sh_eth_rx()

This patch fixes the packet "exceeded" condition in sh_eth_rx() when
RACT in an RX descriptor is not set and the "quota" is 0.
Otherwise, kernel panic happens because the "&n->poll_list" is deleted
twice in sh_eth_poll() which calls napi_complete() and net_rx_action().

Signed-off-by: Kouei Abe <kouei.abe.cp@renesas.com>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: filter: fix warning on 32-bit arch
Alexei Starovoitov [Wed, 11 Jun 2014 20:16:44 +0000 (13:16 -0700)]
net: filter: fix warning on 32-bit arch

fix compiler warning on 32-bit architectures:

net/core/filter.c: In function '__sk_run_filter':
net/core/filter.c:540:22: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
net/core/filter.c:550:22: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
net/core/filter.c:560:22: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotipc: fix potential bug in function tipc_backlog_rcv
Jon Paul Maloy [Mon, 9 Jun 2014 16:08:18 +0000 (11:08 -0500)]
tipc: fix potential bug in function tipc_backlog_rcv

In commit 4f4482dcd9a0606a30541ff165ddaca64748299b ("tipc: compensate
for double accounting in socket rcv buffer") we access 'truesize' of
a received buffer after it might have been released by the function
filter_rcv().

In this commit we correct this by reading the value of 'truesize' to
the stack before delivering the buffer to filter_rcv().

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: sxgbe: remove duplicate SXGBE_CORE_L34_ADDCTL_REG define
Dan Carpenter [Mon, 9 Jun 2014 15:09:01 +0000 (18:09 +0300)]
net: sxgbe: remove duplicate SXGBE_CORE_L34_ADDCTL_REG define

The SXGBE_CORE_L34_ADDCTL_REG define is cut and pasted twice so we can
delete the second instance.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoqlcnic: remove duplicate QLC_83XX_GET_LSO_CAPABILITY define
Dan Carpenter [Mon, 9 Jun 2014 14:55:39 +0000 (17:55 +0300)]
qlcnic: remove duplicate QLC_83XX_GET_LSO_CAPABILITY define

The QLC_83XX_GET_LSO_CAPABILITY define is cut and pasted twice so we can
delete the second instance.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Sony Chacko <sony.chacko@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'mlx4'
David S. Miller [Wed, 11 Jun 2014 21:59:21 +0000 (14:59 -0700)]
Merge branch 'mlx4'

Amir Vadai says:

====================
cpumask,net: affinity hint helper function

This patchset will set affinity hint to influence IRQs to be allocated on the
same NUMA node as the one where the card resides. As discussed in
http://www.spinics.net/lists/netdev/msg271497.html

If number of IRQs allocated is greater than the number of local NUMA cores, all
local cores will be used first, and the rest of the IRQs will be on a remote
NUMA node.
If no NUMA support - IRQ's and cores will be mapped 1:1

Since the utility function to calculate the mapping could be useful in other mq
drivers in the kernel, it was added to cpumask.[ch]

This patchset was tested and applied on top of net-next since the first
consumer is a network device (mlx4_en).  Over commit fff1f59 "mac802154:
llsec: add forgotten list_del_rcu in key removal"
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet/mlx4_en: Use affinity hint
Yuval Atias [Mon, 9 Jun 2014 07:24:39 +0000 (10:24 +0300)]
net/mlx4_en: Use affinity hint

The “affinity hint” mechanism is used by the user space
daemon, irqbalancer, to indicate a preferred CPU mask for irqs.
Irqbalancer can use this hint to balance the irqs between the
cpus indicated by the mask.

We wish the HCA to preferentially map the IRQs it uses to numa cores
close to it.  To accomplish this, we use cpumask_set_cpu_local_first(), that
sets the affinity hint according the following policy:
First it maps IRQs to “close” numa cores.  If these are exhausted, the
remaining IRQs are mapped to “far” numa cores.

Signed-off-by: Yuval Atias <yuvala@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agocpumask: Utility function to set n'th cpu - local cpu first
Amir Vadai [Mon, 9 Jun 2014 07:24:38 +0000 (10:24 +0300)]
cpumask: Utility function to set n'th cpu - local cpu first

This function sets the n'th cpu - local cpu's first.
For example: in a 16 cores server with even cpu's local, will get the
following values:
cpumask_set_cpu_local_first(0, numa, cpumask) => cpu 0 is set
cpumask_set_cpu_local_first(1, numa, cpumask) => cpu 2 is set
...
cpumask_set_cpu_local_first(7, numa, cpumask) => cpu 14 is set
cpumask_set_cpu_local_first(8, numa, cpumask) => cpu 1 is set
cpumask_set_cpu_local_first(9, numa, cpumask) => cpu 3 is set
...
cpumask_set_cpu_local_first(15, numa, cpumask) => cpu 15 is set

Curently this function will be used by multi queue networking devices to
calculate the irq affinity mask, such that as many local cpu's as
possible will be utilized to handle the mq device irq's.

Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net...
David S. Miller [Wed, 11 Jun 2014 19:25:12 +0000 (12:25 -0700)]
Merge branch 'master' of git://git./linux/kernel/git/jkirsher/net-next

Jeff Kirsher says:

====================
Intel Wired LAN Driver Updates 2014-06-11

This series contains updates to igb, i40e and i40evf.

Todd makes a change to igb to un-hide invariant returns by getting rid of
the E1000_SUCCESS define and converting those returns to return 0.

Jacob separates the hardware logic from the set function, so that we can
re-use it during a ptp_reset in igb.  This enables the reset to return
functionality to the last know timestamp mode, rather than resetting the
value.

Ashish implements context flags for headwb and headwb_addr so that we
do not have to keep them always enabled.

Shannon updates the admin queue API for the new firmware, which adds
set_pf_content, nvm_config_read/write, replaces set_phy_reset with
set_phy_debug and removes nvm_read/write_reg_se.  Cleans up the driver
to use the stored base_queue value since there is no need to read the
PCI register for the PF's base queue on every single transmit queue
enable and disable as we already have the value stored from reading
the capability features at startup.

Anjali changes the notion of source and destination for FD_SB in ethtool
to align i40e with other drivers.  Adds flow director statistics to
the PF stats.  Fixes a bug in ethtool for flow director drop packet
filter where the drop action comes down as a ring_cookie value, so allow
it as a special value that can be used to configure destination control.

Mitch fixes the i40evf to keep the driver from going down when it is
already in a down state.  This prevents a CPU soft lock in napi_disable().
Also change the i40evf to check the admin queue error bits since the
firmware can indicate any admin queue error states to the driver via
some bits in the length registers.

Neerav separates out the DCB capability and enabled flags because currently
if the firmware reports DCB capability the driver enables
I40E_FLAG_DCB_ENABLED flag.  When this flag is enabled the driver inserts
a tag when transmitting a packet from the port even if there are no DCB
traffic classes configured at the port.  So by adding the additional flag,
I40E_FLAG_DCB_CAPABLE, that will be set when the DCB capability is present
and the existing enabled flag will only be set if there are more than one
traffic classes configured at the port.

Greg fixes the i40e driver to not automatically accept tagged packets by
default so that the system must request a VLAN tag packet filter to get
packets with that tag.  Greg also converts i40e to use the in-kernel
ether_addr_copy() instead of mempcy().

Jesse removes the FTYPE field from the receive descriptor to match the
hardware implementation.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'sctp-next'
David S. Miller [Wed, 11 Jun 2014 19:23:30 +0000 (12:23 -0700)]
Merge branch 'sctp-next'

Daniel Borkmann says:

====================
SCTP update

This set contains transport path selection improvements in
SCTP. Please see individual patches for details.
====================

Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: sctp: fix incorrect type in gfp initializer
Daniel Borkmann [Wed, 11 Jun 2014 16:19:32 +0000 (18:19 +0200)]
net: sctp: fix incorrect type in gfp initializer

This fixes the following sparse warning:

  net/sctp/associola.c:1556:29: warning: incorrect type in initializer (different base types)
  net/sctp/associola.c:1556:29:    expected bool [unsigned] [usertype] preload
  net/sctp/associola.c:1556:29:    got restricted gfp_t

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: sctp: improve sctp_select_active_and_retran_path selection
Daniel Borkmann [Wed, 11 Jun 2014 16:19:31 +0000 (18:19 +0200)]
net: sctp: improve sctp_select_active_and_retran_path selection

In function sctp_select_active_and_retran_path(), we walk the
transport list in order to look for the two most recently used
ACTIVE transports (trans_pri, trans_sec). In case we didn't find
anything ACTIVE, we currently just camp on a possibly PF or
INACTIVE transport that is primary path; this behavior actually
dates back to linux-history tree of the very early days of
lksctp, and can yield a behavior that chooses suboptimal
transport paths.

Instead, be a bit more clever by reusing and extending the
recently introduced sctp_trans_elect_best() handler. In case
both transports are evaluated to have the same score resulting
from their states, break the tie by looking at: 1) transport
patch error count 2) last_time_heard value from each transport.

This is analogous to Nishida's Quick Failover draft [1],
section 5.1, 3:

  The sender SHOULD avoid data transmission to PF destinations.
  When all destinations are in either PF or Inactive state,
  the sender MAY either move the destination from PF to active
  state (and transmit data to the active destination) or the
  sender MAY transmit data to a PF destination. In the former
  scenario, (i) the sender MUST NOT notify the ULP about the
  state transition, and (ii) MUST NOT clear the destination's
  error counter. It is recommended that the sender picks the
  PF destination with least error count (fewest consecutive
  timeouts) for data transmission. In case of a tie (multiple PF
  destinations with same error count), the sender MAY choose the
  last active destination.

Thus for sctp_select_active_and_retran_path(), we keep track of
the best, if any, transport that is in PF state and in case no
ACTIVE transport has been found (hence trans_{pri,sec} is NULL),
we select the best out of the three: current primary_path and
retran_path as well as a possible PF transport.

The secondary may still camp on the original primary_path as
before. The change in sctp_trans_elect_best() with a more fine
grained tie selection also improves at the same time path selection
for sctp_assoc_update_retran_path() in case of non-ACTIVE states.

  [1] http://tools.ietf.org/html/draft-nishida-tsvwg-sctp-failover-05

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: sctp: migrate most recently used transport to ktime
Daniel Borkmann [Wed, 11 Jun 2014 16:19:30 +0000 (18:19 +0200)]
net: sctp: migrate most recently used transport to ktime

Be more precise in transport path selection and use ktime
helpers instead of jiffies to compare and pick the better
primary and secondary recently used transports. This also
avoids any side-effects during a possible roll-over, and
could lead to better path decision-making.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: sctp: refactor active path selection
Daniel Borkmann [Wed, 11 Jun 2014 16:19:29 +0000 (18:19 +0200)]
net: sctp: refactor active path selection

This patch just refactors and moves the code for the active
path selection into its own helper function outside of
sctp_assoc_control_transport() which is already big enough.
No functional changes here.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoktime: add ktime_after and ktime_before helper
Daniel Borkmann [Wed, 11 Jun 2014 16:19:28 +0000 (18:19 +0200)]
ktime: add ktime_after and ktime_before helper

Add two minimal helper functions analogous to time_before() and
time_after() that will later on both be needed by SCTP code.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'mac802154'
David S. Miller [Wed, 11 Jun 2014 19:11:25 +0000 (12:11 -0700)]
Merge branch 'mac802154'

Phoebe Buckheister says:

====================
Recent llsec code introduced a memory leak on decryption failures during rx.
This fixes said leak, and optimizes the receive loops for monitor and wpan
devices to only deliver skbs to devices that are actually up. Also changes a
dev_kfree_skb to kfree_skb when an invalid packet is dropped before being
pushed into the stack.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agomac802154: don't deliver packets to devices that are down
Phoebe Buckheister [Wed, 11 Jun 2014 10:03:07 +0000 (12:03 +0200)]
mac802154: don't deliver packets to devices that are down

Only one WPAN devices can be active at any given time, so only deliver
packets to that one interface that is actually up. Multiple monitors may
be up at any given time, but we don't have to deliver to monitors that
are down either.

Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agomac802154: properly free incoming skbs on decryption failure
Phoebe Buckheister [Wed, 11 Jun 2014 10:03:06 +0000 (12:03 +0200)]
mac802154: properly free incoming skbs on decryption failure

mac802154 RX did not free skbs on decryption failure, assuming that the
caller would when the local rx handler returned _DROP. This was false.

Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoi40e/i40evf: Bump i40e to version 0.4.10 and i40evf to 0.9.34
Catherine Sullivan [Thu, 22 May 2014 06:32:33 +0000 (06:32 +0000)]
i40e/i40evf: Bump i40e to version 0.4.10 and i40evf to 0.9.34

Bump versions.

Change-ID: Ic4a84354955061ca18321b1e97c9c30fe1563b5c
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: use stored base_queue value
Shannon Nelson [Thu, 22 May 2014 06:32:28 +0000 (06:32 +0000)]
i40e: use stored base_queue value

No need to read the PCI register for the PF's base queue on every single Tx
queue enable and disable as we already have the value stored from reading
the capability features at startup.

Change-ID: Ic02fb622757742f43cb8269369c3d972d4f66555
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: Fix a bug in ethtool for FD drop packet filter action
Anjali Singhai Jain [Thu, 22 May 2014 06:32:23 +0000 (06:32 +0000)]
i40e: Fix a bug in ethtool for FD drop packet filter action

A drop action comes down as a ring_cookie value, so allow it as
a special value that can be used to configure destination control.

Also fix the output to filter read command accordingly.

Change-ID: I9956723cee42f3194885403317dd21ed4a151144
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e/i40evf: Add Flow director stats to PF stats
Anjali Singhai Jain [Thu, 22 May 2014 06:32:17 +0000 (06:32 +0000)]
i40e/i40evf: Add Flow director stats to PF stats

Add members to stat struct to keep track of Flow director ATR and
SideBand filter packet matches.

Change-ID: Ibbb31a53c7adcc2bb96991dd80565442a2f2513c
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e/i40evf: remove FTYPE
Jesse Brandeburg [Thu, 22 May 2014 06:32:12 +0000 (06:32 +0000)]
i40e/i40evf: remove FTYPE

This change drops the FTYPE field from the Rx descriptor, to
match the hardware implementation.

Change-ID: I66d31d2b43861da45e8ace4fb03df033abe88bab
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40evf: check admin queue error bits
Mitch Williams [Thu, 22 May 2014 06:32:07 +0000 (06:32 +0000)]
i40evf: check admin queue error bits

FW can indicate any admin queue error states to the driver via some bits
in the length registers. Each time we process an admin queue message,
check these bits and log any errors we find. Since the VF really can't
do much, we just print the message and depend on the PF driver to clear
things up on our behalf.

Change-ID: I92bc6c53ce3b4400544e0ca19c5de2d27490bd0d
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e/i40evf: User ether_addr_copy instead of memcpy
Greg Rose [Thu, 22 May 2014 06:32:02 +0000 (06:32 +0000)]
i40e/i40evf: User ether_addr_copy instead of memcpy

Linux gives us a function to copy Ethernet MAC addresses, let's use it.

Change-ID: I0c861900029ca5ea65a53ca39565852fb633f6fd
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: Do not accept tagged packets by default
Greg Rose [Thu, 22 May 2014 06:31:56 +0000 (06:31 +0000)]
i40e: Do not accept tagged packets by default

Remove the filter created by the firmware with the default MAC address it
reads out of the NVM storage and a promiscuous VLAN tag and replace it
with a filter that will not accept tagged packets by default.  The system
must request a VLAN tag packet filter to get packets with that tag.

Change-ID: I119e6c3603a039bd68282ba31bf26f33a575490a
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: Separate out DCB capability and enabled flags
Neerav Parikh [Thu, 22 May 2014 06:31:51 +0000 (06:31 +0000)]
i40e: Separate out DCB capability and enabled flags

Currently if the firmware reports DCB capability the driver enables
I40E_FLAG_DCB_ENABLED flag. When this flag is enabled the driver
inserts a tag when transmitting a packet from the port even if there
are no DCB traffic classes configured at the port.

This patch adds a new flag I40E_FLAG_DCB_CAPABLE that will be set
when the DCB capability is present and the existing flag
I40E_FLAG_DCB_ENABLED will be set only if there are more than one
traffic classes configured at the port.

Change-ID: I24ccbf53ef293db2eba80c8a9772acf729795bd5
Signed-off-by: Neerav Parikh <neerav.parikh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40evf: don't go further down
Mitch Williams [Thu, 22 May 2014 06:31:46 +0000 (06:31 +0000)]
i40evf: don't go further down

If the device is down, there's no place to go but up, so don't try to go
down even more. This prevents a CPU soft lock in napi_disable().

Change-ID: I8b058b9ee974dfa01c212fae2597f4f54b333314
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: Change the notion of src and dst for FD_SB in ethtool
Anjali Singhai Jain [Thu, 22 May 2014 06:31:41 +0000 (06:31 +0000)]
i40e: Change the notion of src and dst for FD_SB in ethtool

In XL710 devices we program FD filter's fields from Tx perspective of the flow.
However the user interface exposed in ethtool should be compliant with the
previous generation of drivers where a filter src and dst field are from
the RX perspective. This patch changes the ethtool interface in this regard
to match the other drivers.

Change-ID: Iec6ccddd87357c4fb53ccf33aa0fae699faf70cf
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e/i40evf: AdminQ API update for new FW
Shannon Nelson [Thu, 22 May 2014 06:31:30 +0000 (06:31 +0000)]
i40e/i40evf: AdminQ API update for new FW

Add set_pf_context, replace set_phy_reset with set_phy_debug, add
nvm_config_read/write, remove nvm_read/write_reg_se and add some
PHY types.

With these changes we bump the API version to 1.2.

Change-ID: I4dc3aec175c2316f66fc9b726b3f7d594699d84e
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e/i40evf: set headwb Tx context flags and use them
Ashish Shah [Thu, 22 May 2014 06:31:25 +0000 (06:31 +0000)]
i40e/i40evf: set headwb Tx context flags and use them

Set appropriate fields in Tx queue configuration virtchnl message
to pf to enable headwb and setup headwb addr.
Then use that info from the VF to set headwb and headwb_addr instead of
always enabling them.

Change-ID: I7d393d1b2b07f0f3355b3a4f7c2d3c6ee3b0d622
Signed-off-by: Ashish Shah <ashish.n.shah@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoigb: separate hardware setting from the set_ts_config ioctl
Jacob Keller [Thu, 5 Jun 2014 07:25:10 +0000 (07:25 +0000)]
igb: separate hardware setting from the set_ts_config ioctl

This patch separates the hardware logic from the set function, so that
we can re-use it during a ptp_reset. This enables the reset to return
functionality to the last known timestamp mode, rather than resetting
the value. We initialize the mode to off during the ptp_init cycle.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoigb: unhide invariant returns
Todd Fujinaka [Wed, 4 Jun 2014 07:12:15 +0000 (07:12 +0000)]
igb: unhide invariant returns

Return a 0 directly rather than a constant.

Reported-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Todd Fujinaka <todd.fujinaka@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoamd-xgbe: Rename MAX_DMA_CHANNELS to avoid powerpc conflict
Lendacky, Thomas [Mon, 9 Jun 2014 14:19:32 +0000 (09:19 -0500)]
amd-xgbe: Rename MAX_DMA_CHANNELS to avoid powerpc conflict

MAX_DMA_CHANNELS is defined in asm/scatterlist.h of the powerpc
architecture.  Rename this #define in xgbe.h to avoid the
redefined warning issued during compilation.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agofarsync: Fix confusion about DMA address and buffer offset types
Ben Hutchings [Sun, 8 Jun 2014 22:49:34 +0000 (23:49 +0100)]
farsync: Fix confusion about DMA address and buffer offset types

Use dma_addr_t for DMA address parameters and u32 for shared memory
offset parameters.

Do not assume that dma_addr_t is the same as unsigned long; it will
not be in PAE configurations.  Truncate DMA addresses to 32 bits when
printing them.  This is OK because the DMA mask for this device is
32-bit (per default).

Also rename the DMA address parameters from 'skb' to 'dma'.

Compile-tested only.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'mlx4'
David S. Miller [Wed, 11 Jun 2014 07:32:53 +0000 (00:32 -0700)]
Merge branch 'mlx4'

Or Gerlitz says:

====================
mlx4 SRIOV fixes

The patch from Wei Yang is a designed fix to a regression introduced by earlier commit
of him. Jack added a fix to the resource management which we got from IBM.

Let's get that into 3.16-rc1 1st and later see to what stable version/s this should go.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet/mlx4_core: Keep only one driver entry release mlx4_priv
Wei Yang [Sun, 8 Jun 2014 10:49:46 +0000 (13:49 +0300)]
net/mlx4_core: Keep only one driver entry release mlx4_priv

Following commit befdf89 "net/mlx4_core: Preserve pci_dev_data after
__mlx4_remove_one()", there are two mlx4 pci callbacks which will
attempt to release the mlx4_priv object -- .shutdown and .remove.

This leads to a use-after-free access to the already freed mlx4_priv
instance and trigger a "Kernel access of bad area" crash when both
.shutdown and .remove are called.

During reboot or kexec, .shutdown is called, with the VFs probed to
the host going through shutdown first and then the PF. Later, the PF
will trigger VFs' .remove since VFs still have driver attached.

Fix that by keeping only one driver entry which releases mlx4_priv.

Fixes: befdf89 ('net/mlx4_core: Preserve pci_dev_data after __mlx4_remove_one()')
CC: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet/mlx4_core: Fix SRIOV free-pool management when enforcing resource quotas
Jack Morgenstein [Sun, 8 Jun 2014 10:49:45 +0000 (13:49 +0300)]
net/mlx4_core: Fix SRIOV free-pool management when enforcing resource quotas

The Hypervisor driver tracks free slots and reserved slots at the global level
and tracks allocated slots and guaranteed slots per VF.

Guaranteed slots are treated as reserved by the driver, so the total
reserved slots is the sum of all guaranteed slots over all the VFs.

As VFs allocate resources, free (global) is decremented and allocated (per VF)
is incremented for those resources. However, reserved (global) is never changed.

This means that effectively, when a VF allocates a resource from its
guaranteed pool, it is actually reducing that resource's free pool (since
the global reserved count was not also reduced).

The fix for this problem is the following: For each resource, as long as a
VF's allocated count is <= its guaranteed number, when allocating for that
VF, the reserved count (global) should be reduced by the allocation as well.

When the global reserved count reaches zero, the remaining global free count
is still accessible as the free pool for that resource.

When the VF frees resources, the reverse happens: the global reserved count
for a resource is incremented only once the VFs allocated number falls below
its guaranteed number.

This fix was developed by Rick Kready <kready@us.ibm.com>

Reported-by: Rick Kready <kready@us.ibm.com>
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: wimax: i2400m: control.c: Cleaning up conjunction always evaluates to false
Rickard Strandqvist [Sat, 7 Jun 2014 11:26:37 +0000 (13:26 +0200)]
net: wimax: i2400m: control.c: Cleaning up conjunction always evaluates to false

Logical conjunction always evaluates to false:  minor < 2 && minor > 1
I guess what you wanted is rather: minor > 2 || minor < 1

This was partly found using a static code analysis program called cppcheck.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: ethernet: toshiba: ps3_gelic_net.c: Cleaning up a check on a memory allocation
Rickard Strandqvist [Sat, 7 Jun 2014 10:22:08 +0000 (12:22 +0200)]
net: ethernet: toshiba: ps3_gelic_net.c: Cleaning up a check on a memory allocation

A check on a memory allocation is checked incorrectly.

This was partly found using a static code analysis program called cppcheck.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Acked-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoamd-xgbe: fix unused variable compilation warning in phylib driver
françois romieu [Sat, 7 Jun 2014 09:07:48 +0000 (11:07 +0200)]
amd-xgbe: fix unused variable compilation warning in phylib driver

Fix following compilation warning:
[...]
  CC      drivers/net/phy/amd-xgbe-phy.o
drivers/net/phy/amd-xgbe-phy.c:1353:30: warning:
‘amd_xgbe_phy_ids’ defined but not used [-Wunused-variable]
 static struct mdio_device_id amd_xgbe_phy_ids[] = {
                              ^
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: filter: fix nlattr and nlattr_nest BPF tests
Alexei Starovoitov [Sat, 7 Jun 2014 00:48:20 +0000 (17:48 -0700)]
net: filter: fix nlattr and nlattr_nest BPF tests

- 'struct nlattr' must be 2 byte aligned
- provide big-endian input data for nlattr/nlattr_nest tests

Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: filter: cleanup A/X name usage
Alexei Starovoitov [Fri, 6 Jun 2014 21:46:06 +0000 (14:46 -0700)]
net: filter: cleanup A/X name usage

The macro 'A' used in internal BPF interpreter:
 #define A regs[insn->a_reg]
was easily confused with the name of classic BPF register 'A', since
'A' would mean two different things depending on context.

This patch is trying to clean up the naming and clarify its usage in the
following way:

- A and X are names of two classic BPF registers

- BPF_REG_A denotes internal BPF register R0 used to map classic register A
  in internal BPF programs generated from classic

- BPF_REG_X denotes internal BPF register R7 used to map classic register X
  in internal BPF programs generated from classic

- internal BPF instruction format:
struct sock_filter_int {
        __u8    code;           /* opcode */
        __u8    dst_reg:4;      /* dest register */
        __u8    src_reg:4;      /* source register */
        __s16   off;            /* signed offset */
        __s32   imm;            /* signed immediate constant */
};

- BPF_X/BPF_K is 1 bit used to encode source operand of instruction
In classic:
  BPF_X - means use register X as source operand
  BPF_K - means use 32-bit immediate as source operand
In internal:
  BPF_X - means use 'src_reg' register as source operand
  BPF_K - means use 32-bit immediate as source operand

Suggested-by: Chema Gonzalez <chema@google.com>
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Chema Gonzalez <chema@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'bridge_multicast_exports'
David S. Miller [Wed, 11 Jun 2014 06:51:00 +0000 (23:51 -0700)]
Merge branch 'bridge_multicast_exports'

Linus Lüssing says:

====================
bridge: multicast snooping patches / exports

The first patch is simply a cosmetic patch. So far I (and maybe others
too?) have been regularly confusing these two structs, therefore I'd
suggest renaming them and therefore making the follow-up patches easier
to understand and nicer to fit in.

The second patch fixes a minor issue, but probably not worth for stable.

On the other hand the first two patches are also preparations for the
third and fourth patch:

These two patches are exporting functionality needed to marry the bridge
multicast snooping with the batman-adv multicast optimizations recently
added for the 3.15 kernel, allowing to use these optimzations in common
setups having a bridge on top of e.g. bat0, too. So far these bridged
setups would fall back to simple flooding through the batman-adv mesh
network for any multicast packet entering bat0.

More information about the batman-adv multicast optimizations currently
implemented can be found here:

http://www.open-mesh.org/projects/batman-adv/wiki/Basic-multicast-optimizations

The integration on the batman-adv side could afterwards look like this,
for instance:

http://git.open-mesh.org/batman-adv.git/commitdiff/576b59dd3e34737c702e548b21fa72059262f796?hp=f95ce7131746c65fbcdffcf2089cab59e2c2f7ac
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobridge: memorize and export selected IGMP/MLD querier port
Linus Lüssing [Sat, 7 Jun 2014 16:26:29 +0000 (18:26 +0200)]
bridge: memorize and export selected IGMP/MLD querier port

Adding bridge support to the batman-adv multicast optimization requires
batman-adv knowing about the existence of bridged-in IGMP/MLD queriers
to be able to reliably serve any multicast listener behind this same
bridge.

Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobridge: add export of multicast database adjacent to net_dev
Linus Lüssing [Sat, 7 Jun 2014 16:26:28 +0000 (18:26 +0200)]
bridge: add export of multicast database adjacent to net_dev

With this new, exported function br_multicast_list_adjacent(net_dev) a
list of IPv4/6 addresses is returned. This list contains all multicast
addresses sensed by the bridge multicast snooping feature on all bridge
ports of the bridge interface of net_dev, excluding addresses from the
specified net_device itself.

Adding bridge support to the batman-adv multicast optimization requires
batman-adv knowing about the existence of bridged-in multicast
listeners to be able to reliably serve them with multicast packets.

Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobridge: adhere to querier election mechanism specified by RFCs
Linus Lüssing [Sat, 7 Jun 2014 16:26:27 +0000 (18:26 +0200)]
bridge: adhere to querier election mechanism specified by RFCs

MLDv1 (RFC2710 section 6), MLDv2 (RFC3810 section 7.6.2), IGMPv2
(RFC2236 section 3) and IGMPv3 (RFC3376 section 6.6.2) specify that the
querier with lowest source address shall become the selected
querier.

So far the bridge stopped its querier as soon as it heard another
querier regardless of its source address. This results in the "wrong"
querier potentially becoming the active querier or a potential,
unnecessary querying delay.

With this patch the bridge memorizes the source address of the currently
selected querier and ignores queries from queriers with a higher source
address than the currently selected one. This slight optimization is
supposed to make it more RFC compliant (but is rather uncritical and
therefore probably not necessary to be queued for stable kernels).

Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobridge: rename struct bridge_mcast_query/querier
Linus Lüssing [Sat, 7 Jun 2014 16:26:26 +0000 (18:26 +0200)]
bridge: rename struct bridge_mcast_query/querier

The current naming of these two structs is very random, in that
reversing their naming would not make any semantical difference.

This patch tries to make the naming less confusing by giving them a more
specific, distinguishable naming.

This is also useful for the upcoming patches reintroducing the
"struct bridge_mcast_querier" but for storing information about the
selected querier (no matter if our own or a foreign querier).

Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'cxgb4'
David S. Miller [Wed, 11 Jun 2014 05:49:59 +0000 (22:49 -0700)]
Merge branch 'cxgb4'

Hariprasad Shenai says:

====================
Adds support for CIQ and other misc. fixes for rdma/cxgb4

This patch series adds support to allocate and use IQs specifically for
indirect interrupts, adds fixes to align ISS for iWARP connections & fixes
related to tcp snd/rvd window for Chelsio T4/T5 adapters on iw_cxgb4.
Also changes Interrupt Holdoff Packet Count threshold of response queues for
cxgb4 driver.

The patches series is created against 'net-next' tree.
And includes patches on cxgb4 and iw_cxgb4 driver.

Since this patch-series contains cxgb4 and iw_cxgb4 patches, we would like to
request this patch series to get merged via David Miller's 'net-next' tree.

We have included all the maintainers of respective drivers. Kindly review the
change and let us know in case of any review comments.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agocxgb4: Change default Interrupt Holdoff Packet Count Threshold
Hariprasad Shenai [Fri, 6 Jun 2014 16:10:45 +0000 (21:40 +0530)]
cxgb4: Change default Interrupt Holdoff Packet Count Threshold

Based on original work by Casey Leedom <leedom@chelsio.com>

Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoiw_cxgb4: don't truncate the recv window size
Hariprasad Shenai [Fri, 6 Jun 2014 16:10:44 +0000 (21:40 +0530)]
iw_cxgb4: don't truncate the recv window size

Fixed a bug that shows up with recv window sizes that exceed the size of
the RCV_BUFSIZ field in opt0 (>= 1024K).  If the recv window exceeds
this, then we specify the max possible in opt0, add add the rest in via
a RX_DATA_ACK credits.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoiw_cxgb4: Choose appropriate hw mtu index and ISS for iWARP connections
Hariprasad Shenai [Fri, 6 Jun 2014 16:10:43 +0000 (21:40 +0530)]
iw_cxgb4: Choose appropriate hw mtu index and ISS for iWARP connections

Select the appropriate hw mtu index and initial sequence number to optimize
hw memory performance.

Add new cxgb4_best_aligned_mtu() which allows callers to provide enough
information to be used to [possibly] select an MTU which will result in the
TCP Data Segment Size (AKA Maximum Segment Size) to be an aligned value.

If an RTR message exhange is required, then align the ISS to 8B - 1 + 4, so
that after the SYN the send seqno will align on a 4B boundary. The RTR
message exchange will leave the send seqno aligned on an 8B boundary.
If an RTR is not required, then align the ISS to 8B - 1.  The goal is
to have the send seqno be 8B aligned when we send the first FPDU.

Based on original work by Casey Leedom <leeedom@chelsio.com> and
Steve Wise <swise@opengridcomputing.com>

Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoiw_cxgb4: Allocate and use IQs specifically for indirect interrupts
Hariprasad Shenai [Fri, 6 Jun 2014 16:10:42 +0000 (21:40 +0530)]
iw_cxgb4: Allocate and use IQs specifically for indirect interrupts

Currently indirect interrupts for RDMA CQs funnel through the LLD's RDMA
RXQs, which also handle direct interrupts for offload CPLs during RDMA
connection setup/teardown.  The intended T4 usage model, however, is to
have indirect interrupts flow through dedicated IQs. IE not to mix
indirect interrupts with CPL messages in an IQ.  This patch adds the
concept of RDMA concentrator IQs, or CIQs, setup and maintained by the
LLD and exported to iw_cxgb4 for use when creating CQs. RDMA CPLs will
flow through the LLD's RDMA RXQs, and CQ interrupts flow through the
CIQs.

Design:

cxgb4 creates and exports an array of CIQs for the RDMA ULD.  These IQs
are sized according to the max available CQs available at adapter init.
In addition, these IQs don't need FL buffers since they only service
indirect interrupts.  One CIQ is setup per RX channel similar to the
RDMA RXQs.

iw_cxgb4 will utilize these CIQs based on the vector value passed into
create_cq().  The num_comp_vectors advertised by iw_cxgb4 will be the
number of CIQs configured, and thus the vector value will be the index
into the array of CIQs.

Based on original work by Steve Wise <swise@opengridcomputing.com>

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agogre: allow changing mac address when device is up
stephen hemminger [Fri, 6 Jun 2014 15:10:00 +0000 (08:10 -0700)]
gre: allow changing mac address when device is up

There is no need to require forcing device down on a Ethernet GRE (gretap)
tunnel to change the MAC address.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotcp: add gfp parameter to tcp_fragment
Octavian Purdila [Fri, 6 Jun 2014 14:32:37 +0000 (17:32 +0300)]
tcp: add gfp parameter to tcp_fragment

tcp_fragment can be called from process context (from tso_fragment).
Add a new gfp parameter to allow it to preserve atomic memory if
possible.

Signed-off-by: Octavian Purdila <octavian.purdila@intel.com>
Reviewed-by: Christoph Paasch <christoph.paasch@uclouvain.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net...
David S. Miller [Wed, 11 Jun 2014 03:25:52 +0000 (20:25 -0700)]
Merge branch 'master' of git://git./linux/kernel/git/jkirsher/net-next

Jeff Kirsher says:

====================
Intel Wired LAN Driver Updates 2014-06-09

This series contains more updates to i40e and i40evf.

Shannon adds checks for error status bits on the admin event queue and
provides notification if seen.  Cleans up unused variable and memory
allocation which was used earlier in driver development and is no longer
needed.  Also fixes the driver to not complain about removing
non-existent MAC addresses.  Bumps the driver versions for both i40e
and i40evf.

Catherine fixes a function header comment to make sure the comment correctly
reflects the function name.

Mitch adds code to allow for additional VSIs since the number of VSIs that
the firmware reports to us is a guaranteed minimum, not an absolute
maximum.  The hardware actually supports for more than the reported value,
which we often need.  Implements anti-spoofing for VFs for both MAC
addresses and VLANs, as well as enable this feature by default for all VFs.

Anjali changes the interrupt distribution policy to change the way
resources for special features are handled.  Fixes the driver to not fall
back to one queue if the only feature enabled is ATR, since FD_SB
and FD_ATR need to be checked independently in order to decide if we
will support multiple queue or not.  Allows the RSS table entry range
and GPS to be any number, not necessarily a power of 2 because hardware
does not restrict us to use a power of 2 GPS in the case of RSS as long as
we are not sharing the RSS table with another VSI (VMDq).

Frank modifies the driver to keep SR-IOV enabled in the case that RSS,
VMFq, FD_SB and DCB are disabled so that SR-IOV does not get turned off
unnecessarily.

Jesse fixes a bug in receive checksum where the driver was not marking
packets with bad checksums correctly, especially IPv6 packets with a bad
checksum.  To do this correctly, we need a define that may be set by
hardware in rare cases.

Greg fixes the driver to delete all the old and stale MAC filters for the
VF VSI when the host administrator changes the VF MAC address from under
its feet.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoi40e/i40evf: bump version to 0.4.7 for i40e and 0.9.31 for i40evf
Shannon Nelson [Tue, 20 May 2014 08:01:47 +0000 (08:01 +0000)]
i40e/i40evf: bump version to 0.4.7 for i40e and 0.9.31 for i40evf

Bumpity and Fred Worm say it's time to change the numbers again.

Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Change-ID: I658731d022ea23cedede4be2bfecd8b4cc68d270
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: Allow RSS table entry range and GPS to be any number, not necessarily power...
Anjali Singhai Jain [Tue, 20 May 2014 08:01:46 +0000 (08:01 +0000)]
i40e: Allow RSS table entry range and GPS to be any number, not necessarily power of 2

We tell the HW upper boundary of power of 2 in VSI config,
but the HW does not restrict us to use just power of 2 GPS in
case of RSS as long as we are not sharing the RSS table with
another VSI (VMDq). We at present are not doing RSS in VMDq
VSI.
If we were to enable that and if the system had CPU count which
was not power 2, the VMDq VSIs will see a little skewed distribution.

Change-ID: I3ea797ce9065a3ca4fc4d04251bf195463410473
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: Delete stale MAC filters after change
Greg Rose [Tue, 20 May 2014 08:01:45 +0000 (08:01 +0000)]
i40e: Delete stale MAC filters after change

Delete all the old and stale MAC filters for the VF VSI when the host
administrator changes the VF MAC address from under its feet.  Also don't
bother to add a filter for the VSI when its going to go away anyway.
Just record the new address and punch the VF reset.

Change-ID: Ic0d12055926f41989d1965ccf500053729c063ad
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: Do not fall back to one queue model if the only feature enabled is ATR
Anjali Singhai Jain [Tue, 20 May 2014 08:01:44 +0000 (08:01 +0000)]
i40e: Do not fall back to one queue model if the only feature enabled is ATR

FD_SB and FD_ATR needs to be checked independently in order to decide if
we will support multiple queues or not.

Change-ID: I9d3274f5924c79e29efdbcf66a2fcca1fee2107f
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e/i40evf: add PPRS bit to error bits and fix bug in Rx checksum
Jesse Brandeburg [Tue, 20 May 2014 08:01:43 +0000 (08:01 +0000)]
i40e/i40evf: add PPRS bit to error bits and fix bug in Rx checksum

The driver was not marking packets with bad checksums
correctly, especially IPv6 packets with a bad checksum.
To do this correctly we need a define that may be set by
hardware in rare cases.

Change-ID: I1a997b72b491ded27a78ac3bce1197b2d2611130
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: keep SR-IOV enabled in the case that RSS, VMDQ, FD_SB and DCB are disabled
Frank Zhang [Tue, 20 May 2014 08:01:42 +0000 (08:01 +0000)]
i40e: keep SR-IOV enabled in the case that RSS, VMDQ, FD_SB and DCB are disabled

Modify the logic in i40e_determine_queue_usage() so that
SR-IOV doesn't get turned off unnecessarily.

Change-ID: I86ca304fa9f742a50e9ea831b887f358a6a9d53d
Signed-off-by: Frank Zhang <frank_1.zhang@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: Changes to Interrupt distribution policy
Anjali Singhai Jain [Wed, 21 May 2014 23:32:43 +0000 (23:32 +0000)]
i40e: Changes to Interrupt distribution policy

This patch changes the way resources are distributed to special features.

Change-ID: I847e49d714a1d70e97f3f994cb39bfb5e02ab016
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: implement anti-spoofing for VFs
Mitch Williams [Tue, 20 May 2014 08:01:40 +0000 (08:01 +0000)]
i40e: implement anti-spoofing for VFs

Our hardware supports VF antispoofing for both MAC addresses and VLANs.
Enable this feature by default for all VFs and implement the netdev op
to control it from the command line.

Change-ID: Ifb941da22785848aa3aba6b2231be135b8ea8f31
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: don't complain about removing non-existent addresses
Shannon Nelson [Tue, 20 May 2014 08:01:39 +0000 (08:01 +0000)]
i40e: don't complain about removing non-existent addresses

We don't need to complain in the log about mac addresses that
can't be deleted because they don't exist.

Change-ID: I4e6370df175bf72726f06d2206c03bcbfded8387
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: remove unused variable and memory allocation
Shannon Nelson [Tue, 20 May 2014 08:01:38 +0000 (08:01 +0000)]
i40e: remove unused variable and memory allocation

This was a vestige of early driver development that no longer
has any actual use.

Change-ID: I95b5b19c4bbfaff8759197af671ebaf716cb6ab5
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: allow for more VSIs
Mitch Williams [Tue, 20 May 2014 08:01:37 +0000 (08:01 +0000)]
i40e: allow for more VSIs

The number of VSIs that the firmware reports to us is a guaranteed
minimum, not an absolute maximum. The hardware actually supports far
more  than the reported value, which we often need.

To allow for this, we allocate space for a larger number of VSIs than is
guaranteed by the firmware, with the knowledge that we may fail to get
them all in the future.

Note that we are just allocating pointers here, the actual (much larger)
VSI structures are allocated on demand.

Change-ID: I6f4e535ce39d3bf417aef78306e04fbc7505140e
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40evf: Fix function header
Catherine Sullivan [Tue, 20 May 2014 08:01:36 +0000 (08:01 +0000)]
i40evf: Fix function header

Fix function header comment to have the correct function name.

Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: add checks for AQ error status bits
Shannon Nelson [Tue, 20 May 2014 08:01:35 +0000 (08:01 +0000)]
i40e: add checks for AQ error status bits

Check for error status bits on the AdminQ event queue and announce them
if seen.  If the Firmware sets these bits, it will trigger an AdminQ
interrupt to get the driver's attention to process the ARQ, which will
likely be enough to clear the actual issue.

Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Change-ID: I009e0ebc8be764e40e193b29aed2863f43eb5cb0
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoMerge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville...
David S. Miller [Sun, 8 Jun 2014 21:17:39 +0000 (14:17 -0700)]
Merge branch 'for-davem' of git://git./linux/kernel/git/linville/wireless-next

John W. Linville says:

====================
pull request: wireless-next 2014-06-06

Please accept this batch of fixes intended for the 3.16 stream.

For the bluetooth bits, Gustavo says:

"Here some more patches for 3.16. We know that Linus already opened the merge
window, but this is fix only pull request, and most of the patches here are
also tagged for stable."

Along with that, Andrea Merello provides a fix for the broken scanning
in the venerable at76c50x driver...
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net...
David S. Miller [Sun, 8 Jun 2014 21:07:45 +0000 (14:07 -0700)]
Merge branch 'master' of git://git./linux/kernel/git/jkirsher/net-next

Jeff Kirsher says:

====================
Intel Wired LAN Driver Updates 2014-06-08

This series contains updates to i40e and i40evf.

Jesse fixes an issue reported by Eric Dumazet where the driver was not
masking the right bits in the receive descriptor before checking them.
Also fixes TSO accounting since the kernel now can send as much as 32kB
in a single skb->frag[.] entry, even on a system with 4kB pages.

Anjali cleans up registers which are no longer supported.

Akeem cleans up code comments and removes num_msix_entries from the
interrupt setup routine since it was not being used.  Fixes an issue where
FD SB/ATR and NTUPLE configuration status were reported erroneously, so
now the driver reports FDir without further information.  Fixes a coding
error where during the registration for NAPI, the driver was requesting
256 budget.  The max recommended value for this NAPI_POLL_WEIGHT or 64.
Lastly, removed deprecated device IDs because they will not be shipped.

Mitch removes log messages which were redundant so therefore unnecessary.
Also removes a bogus code comment since VF drivers require MSI-X or they
won't get interrupts at all and cleans up the formatting of several log
messages.  Mitch also fixes the possibility of null pointers in VSI, since
not all VSIs have transmit rings.

Shannon ensures to clear the PXE mode bit on each reset after the AdminQ
has been rebuilt.

Catherine bumps the driver versions for i40e and i40evf.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoi40e/i40evf: Bump build version
Catherine Sullivan [Sat, 10 May 2014 04:49:15 +0000 (04:49 +0000)]
i40e/i40evf: Bump build version

Bump i40e to 0.4.5 and i40evf to 0.9.29.

Change-ID: I9faca5544446518c5425612e733499cf16ef20a1
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e/i40evf: remove deprecated device IDs
Jesse Brandeburg [Sat, 10 May 2014 04:49:14 +0000 (04:49 +0000)]
i40e/i40evf: remove deprecated device IDs

Remove two device IDs 1582 and 1573, because they will not be shipped.

Change-ID: Ica2e550b5b21a69e3f353eba2fe5e1c532a548c4
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e/i40evf: fix poll weight
Jesse Brandeburg [Sat, 10 May 2014 04:49:13 +0000 (04:49 +0000)]
i40e/i40evf: fix poll weight

Fix a coding error where during the registration for NAPI
the driver requested 256 budget.  The max recommended
value for this is NAPI_POLL_WEIGHT or 64.

Change-ID: I03ea1e2934a84ff1b5d572988b18315d6d91c5c6
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e/i40evf: fix TSO accounting
Jesse Brandeburg [Sat, 10 May 2014 04:49:12 +0000 (04:49 +0000)]
i40e/i40evf: fix TSO accounting

The TSO logic in the transmit path had some assumptions that
have been broken now that the kernel can send as much as 32kB
in a single skb->frag[.] entry, even on a system with 4kB pages.

This fixes the assumptions and allows the kernel to operate
as efficiently as possible with both SENDFILE and SEND.

In addition, the hardware limit of data contained in a descriptor is
changed to the next power of two below where it currently is in
order to align to a power of two value, preventing a single byte
of data in a descriptor.

Change-ID: I6af1f0b87c1458e10644dbd47541591075a52651
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e/i40evf: remove chatty reset messages
Mitch Williams [Sat, 10 May 2014 04:49:11 +0000 (04:49 +0000)]
i40e/i40evf: remove chatty reset messages

Both the PF side and the VF side of the VF reset process are too noisy.
We already warn the user that a reset is happening, and that is
sufficient.

Because some of these message are inside if statements, we have to
rejigger the brackets at the same time to keep our coding style
consistent.

Change-ID: Id175562fb0ec7c396d9de156b4890e136f52d5f4
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: not all VSIs have rings
Mitch Williams [Sat, 10 May 2014 04:49:10 +0000 (04:49 +0000)]
i40e: not all VSIs have rings

Once more, with feeling: not all VSIs have rings. To assume so is to
invite null pointers to your party.

Change-ID: I576858824468d9712d119fa1015a1f28c27712c4
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: clear pxe after adminq is rebuilt
Shannon Nelson [Sat, 10 May 2014 04:49:09 +0000 (04:49 +0000)]
i40e: clear pxe after adminq is rebuilt

Be sure to clear PXE mode bit on each reset after AdminQ has been rebuilt.

Change-ID: I992d8c79594f8ca0660c50844ace675ecb9c9bf2
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: Fix incorrect feature configuration status
Akeem G Abodunrin [Sat, 10 May 2014 04:49:08 +0000 (04:49 +0000)]
i40e: Fix incorrect feature configuration status

This patch fixes an issue where FD SB/ATR and NTUPLE configurations status are
reported erroneously. Without this patch, driver reports FDir without further
information.

Change-ID: I5bdd2871b7f2db1e5f5e76c741ae6a0dc603b453
Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40evf: use correct format for printing MAC addresses
Mitch Williams [Sat, 10 May 2014 04:49:07 +0000 (04:49 +0000)]
i40evf: use correct format for printing MAC addresses

The correct format is %pM, not %pMAC.

Change-ID: Idb335723a966fe56db3a72b9c07c08ca66f9db3c
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40evf: clean up log message formatting
Mitch Williams [Sat, 10 May 2014 04:49:06 +0000 (04:49 +0000)]
i40evf: clean up log message formatting

Clean up inconsistent log messages, mostly related to punctuation. Based
on the dogma that "kernel messages are not sentences", remove all
trailing periods. Reword a few of the messages to make them less
sentence-like.

Change-ID: Ibd849aa7623a77549b0709988c66ab05d1311472
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40evf: remove bogus comment
Mitch Williams [Sat, 10 May 2014 04:49:05 +0000 (04:49 +0000)]
i40evf: remove bogus comment

This comment is just plain false. VF drivers require MSI-X or they won't
get interrupts at all.

Change-ID: Iaea5e30b6926948aa834a3c506d9a9223d9e3e29
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>