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10 years agocxgb4: Calculate len properly for LSO path
Kumar Sanghvi [Thu, 13 Mar 2014 15:20:50 +0000 (20:50 +0530)]
cxgb4: Calculate len properly for LSO path

Commit 0034b29 ("cxgb4: Don't assume LSO only uses SGL path in t4_eth_xmit()")
introduced a regression where-in length was calculated wrongly for LSO path,
causing chip hangs.
So, correct the calculation of len.

Fixes: 0034b29 ("cxgb4: Don't assume LSO only uses SGL path in t4_eth_xmit()")
Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agocxgb4: Updates for T5 SGE's Egress Congestion Threshold
Kumar Sanghvi [Thu, 13 Mar 2014 15:20:49 +0000 (20:50 +0530)]
cxgb4: Updates for T5 SGE's Egress Congestion Threshold

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

Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agocxgb4: Rectify emitting messages about SGE Ingress DMA channels being potentially...
Kumar Sanghvi [Thu, 13 Mar 2014 15:20:48 +0000 (20:50 +0530)]
cxgb4: Rectify emitting messages about SGE Ingress DMA channels being potentially stuck

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

Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agocxgb4: Add code to dump SGE registers when hitting idma hangs
Kumar Sanghvi [Thu, 13 Mar 2014 15:20:47 +0000 (20:50 +0530)]
cxgb4: Add code to dump SGE registers when hitting idma hangs

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

Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agocxgb4: Fix some small bugs in t4_sge_init_soft() when our Page Size is 64KB
Kumar Sanghvi [Thu, 13 Mar 2014 15:20:46 +0000 (20:50 +0530)]
cxgb4: Fix some small bugs in t4_sge_init_soft() when our Page Size is 64KB

We'd come in with SGE_FL_BUFFER_SIZE[0] and [1] both equal to 64KB and the
extant logic would flag that as an error.

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

Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: sctp: remove NULL check in sctp_assoc_update_retran_path
Daniel Borkmann [Thu, 13 Mar 2014 13:45:26 +0000 (14:45 +0100)]
net: sctp: remove NULL check in sctp_assoc_update_retran_path

This is basically just to let Coverity et al shut up. Remove an
unneeded NULL check in sctp_assoc_update_retran_path().

It is safe to remove it, because in sctp_assoc_update_retran_path()
we iterate over the list of transports, our own transport which is
asoc->peer.retran_path included. In the iteration, we skip the
list head element and transports in state SCTP_UNCONFIRMED.

Such transports came from peer addresses received in INIT/INIT-ACK
address parameters. They are not yet confirmed by a heartbeat and
not available for data transfers.

We know however that in the list of transports, even if it contains
such elements, it at least contains our asoc->peer.retran_path as
well, so even if next to that element, we only encounter
SCTP_UNCONFIRMED transports, we are always going to fall back to
asoc->peer.retran_path through sctp_trans_elect_best(), as that is
for sure not SCTP_UNCONFIRMED as per fbdf501c9374 ("sctp: Do no
select unconfirmed transports for retransmissions").

Whenever we call sctp_trans_elect_best() it will give us a non-NULL
element back, and therefore when we break out of the loop, we are
guaranteed to have a non-NULL transport pointer, and can remove
the NULL check.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reported-by: Dave Jones <davej@redhat.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'dev_kfree_skb_any'
David S. Miller [Wed, 12 Mar 2014 20:22:20 +0000 (16:22 -0400)]
Merge branch 'dev_kfree_skb_any'

Eric W. Biederman says:

====================
Using dev_kfree_skb_any for functions called in multiple contexts

This patchset should be an uncontroversial set of changes to change
dev_kfree_skb to dev_kfree_skb_any for code paths that are called in
hard irq contexts in addition to other contexts.  netpoll is the reason
this code gets called in multiple contexts.

There is more coming but these changes are a good starting place, and
stand on their own.

Since the last round changes to the rx path have been removed netpoll
will changed to avoid that.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Eric Dumazet <edumazet@google.com>
10 years agogianfar: Carefully free skbs in functions called by netpoll.
Eric W. Biederman [Tue, 11 Mar 2014 21:20:26 +0000 (14:20 -0700)]
gianfar: Carefully free skbs in functions called by netpoll.

netpoll can call functions in hard irq context that are ordinarily
called in lesser contexts.  For those functions use dev_kfree_skb_any
and dev_consume_skb_any so skbs are freed safely from hard irq
context.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobenet: Call dev_kfree_skby_any instead of kfree_skb.
Eric W. Biederman [Tue, 11 Mar 2014 21:19:50 +0000 (14:19 -0700)]
benet: Call dev_kfree_skby_any instead of kfree_skb.

Replace free_skb with dev_kfree_skb_any in be_tx_compl_process as
which can be called in hard irq by netpoll, softirq context
by normal napi polling, and in normal sleepable context
by the network device close method.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agomlx4: Call dev_kfree_skby_any instead of dev_kfree_skb.
Eric W. Biederman [Tue, 11 Mar 2014 21:19:14 +0000 (14:19 -0700)]
mlx4: Call dev_kfree_skby_any instead of dev_kfree_skb.

Replace dev_kfree_skb with dev_kfree_skb_any in functions that can
be called in hard irq and other contexts.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoixgb: Call dev_kfree_skby_any instead of dev_kfree_skb.
Eric W. Biederman [Tue, 11 Mar 2014 21:18:42 +0000 (14:18 -0700)]
ixgb: Call dev_kfree_skby_any instead of dev_kfree_skb.

Replace dev_kfree_skb with dev_kfree_skb_any in functions that can
be called in hard irq and other contexts.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotg3: Call dev_kfree_skby_any instead of dev_kfree_skb.
Eric W. Biederman [Tue, 11 Mar 2014 21:18:14 +0000 (14:18 -0700)]
tg3: Call dev_kfree_skby_any instead of dev_kfree_skb.

Replace dev_kfree_skb with dev_kfree_skb_any in functions that can
be called in hard irq and other contexts.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobnx2: Call dev_kfree_skby_any instead of dev_kfree_skb.
Eric W. Biederman [Tue, 11 Mar 2014 21:17:41 +0000 (14:17 -0700)]
bnx2: Call dev_kfree_skby_any instead of dev_kfree_skb.

Replace dev_kfree_skb with dev_kfree_skb_any in functions that can
be called in hard irq and other contexts.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobonding: Call dev_kfree_skby_any instead of kfree_skb.
Eric W. Biederman [Tue, 11 Mar 2014 21:16:58 +0000 (14:16 -0700)]
bonding: Call dev_kfree_skby_any instead of kfree_skb.

Replace kfree_skb with dev_kfree_skb_any in functions that can
be called in hard irq and other contexts.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agor8169: Call dev_kfree_skby_any instead of dev_kfree_skb.
Eric W. Biederman [Tue, 11 Mar 2014 21:16:14 +0000 (14:16 -0700)]
r8169: Call dev_kfree_skby_any instead of dev_kfree_skb.

Replace dev_kfree_skb with dev_kfree_skb_any in functions that can
be called in hard irq and other contexts.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years ago8139too: Call dev_kfree_skby_any instead of dev_kfree_skb.
Eric W. Biederman [Tue, 11 Mar 2014 21:15:36 +0000 (14:15 -0700)]
8139too: Call dev_kfree_skby_any instead of dev_kfree_skb.

Replace dev_kfree_skb with dev_kfree_skb_any in functions that can
be called in hard irq and other contexts.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years ago8139cp: Call dev_kfree_skby_any instead of kfree_skb.
Eric W. Biederman [Tue, 11 Mar 2014 21:14:58 +0000 (14:14 -0700)]
8139cp: Call dev_kfree_skby_any instead of kfree_skb.

Replace kfree_skb with dev_kfree_skb_any in cp_start_xmit
as it can be called in both hard irq and other contexts.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobe2net: update driver version to 10.2
Sathya Perla [Tue, 11 Mar 2014 13:23:09 +0000 (18:53 +0530)]
be2net: update driver version to 10.2

Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobe2net: Fix vlans_added counter
Vasundhara Volam [Tue, 11 Mar 2014 13:23:08 +0000 (18:53 +0530)]
be2net: Fix vlans_added counter

When a VLAN is added by user, adapter->vlans_added is incremented.
But if the VLAN is already programmed in HW, driver ends up
incrementing the counter wrongly.

Increment the counter only if VLAN is not already programmed in the HW.

Signed-off-by: Vasundhara Volam <vasundhara.volam@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobe2net: Create multiple TXQs on RSS capable multi-channel BE3-R interfaces
Vasundhara Volam [Tue, 11 Mar 2014 13:23:07 +0000 (18:53 +0530)]
be2net: Create multiple TXQs on RSS capable multi-channel BE3-R interfaces

Currently the driver creates only a single TXQ on any BE3-R multi-channel
interface.
This patch changes this and creates multiple TXQs on RSS-capable multi-channel
BE3-R interfaces. This change helps improve the TX pps performance on the
affected interface.

Signed-off-by: Vasundhara Volam <vasundhara.volam@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobe2net: fix pmac_id[] allocation size
Ravikumar Nelavelli [Tue, 11 Mar 2014 13:23:06 +0000 (18:53 +0530)]
be2net: fix pmac_id[] allocation size

The allocation size must be be_max_uc() and not "be_max_uc() + 1"
Signed-off-by: Ravikumar Nelavelli <ravikumar.nelavelli@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobe2net: log LPVID used in multi-channel configs
Ravikumar Nelavelli [Tue, 11 Mar 2014 13:23:05 +0000 (18:53 +0530)]
be2net: log LPVID used in multi-channel configs

Signed-off-by: Ravikumar Nelavelli <ravikumar.nelavelli@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobe2net: Add link state control for VFs
Suresh Reddy [Tue, 11 Mar 2014 13:23:04 +0000 (18:53 +0530)]
be2net: Add link state control for VFs

Add support to control VF's link state by implementing the
ndo_set_vf_link_state() hook.

Signed-off-by: Suresh Reddy <suresh.reddy@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobe2net: Use GET_PROFILE_CONFIG cmd for BE3-R to query max-vfs
Suresh Reddy [Tue, 11 Mar 2014 13:23:03 +0000 (18:53 +0530)]
be2net: Use GET_PROFILE_CONFIG cmd for BE3-R to query max-vfs

Use GET_PROFILE_CONFIG_V1 cmd even for BE3-R (it's already used for
Lancer-R and Skyhawk-R), to query max-vfs value supported by the FW.
This is needed as on some configs, the value exported in the PCI-config
space is not accurate.

Signed-off-by: Suresh Reddy <suresh.reddy@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'mlx4-next'
David S. Miller [Wed, 12 Mar 2014 19:57:26 +0000 (15:57 -0400)]
Merge branch 'mlx4-next'

Or Gerlitz says:

====================
mlx4: Add SRIOV support for RoCE

This series adds SRIOV support for RoCE (RDMA over Ethernet) to the mlx4 driver.

The patches are against net-next, as of commit 2d8d40a "pkt_sched: fq:
do not hold qdisc lock while allocating memory"

changes from V1:
 - addressed feedback from Dave on patch #3 and changed get_real_sgid_index()
   to be called fill_in_real_sgid_index() and be a void  function.
 - removed some checkpatch warnings on long lines

changes from V0:
  - always check the return code of mlx4_get_roce_gid_from_slave().
    The call we fixed is introduced in patch #1 and later removed by
    patch #3 that allows guests to have multiple GIDS. The 1..3
    separation was done for proper division of patches to logical changes.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agomlx4: Activate RoCE/SRIOV
Jack Morgenstein [Wed, 12 Mar 2014 10:00:43 +0000 (12:00 +0200)]
mlx4: Activate RoCE/SRIOV

To activate RoCE/SRIOV, need to remove the following:
1. In mlx4_ib_add, need to remove the error return preventing
   initialization of a RoCE port under SRIOV.
2. In update_vport_qp_params (in resource_tracker.c) need to remove
   the error return when a RoCE RC or UD qp is detected.
   This error return causes the INIT-to-RTR qp transition to fail
   in the wrapper function under RoCE/SRIOV.

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 agomlx4_ib: Fix SIDR support of for UD QPs under SRIOV/RoCE
Shani Michaelli [Wed, 12 Mar 2014 10:00:42 +0000 (12:00 +0200)]
mlx4_ib: Fix SIDR support of for UD QPs under SRIOV/RoCE

* Handle CM_SIDR_REQ_ATTR_ID and CM_SIDR_REP_ATTR_ID
  in multiplex_cm_handler and demux_cm_handler.

* Handle Service ID Resolution messages and REQ messages
  separately, for their formats are different.

Signed-off-by: Shani Michaeli <shanim@mellanox.com>
Signed-off-by: Matan Barak <matanb@mellanox.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 agomlx4: Implement IP based gids support for RoCE/SRIOV
Jack Morgenstein [Wed, 12 Mar 2014 10:00:41 +0000 (12:00 +0200)]
mlx4: Implement IP based gids support for RoCE/SRIOV

Since there is no connection between the MAC/VLAN and the GID
when using IP-based addressing, the proxy QP1 (running on the
slave) must pass the source-mac, destination-mac, and vlan_id
information separately from the GID. Additionally, the Host
must pass the remote source-mac and vlan_id back to the slave,

This is achieved as follows:
Outgoing MADs:
    1. Source MAC: obtained from the CQ completion structure
       (struct ib_wc, smac field).
    2. Destination MAC: obtained from the tunnel header
    3. vlan_id: obtained from the tunnel header.
Incoming MADs
    1. The source (i.e., remote) MAC and vlan_id are passed in
       the tunnel header to the proxy QP1.

VST mode support:
     For outgoing MADs,  the vlan_id obtained from the header is
        discarded, and the vlan_id specified by the Hypervisor is used
        instead.
     For incoming MADs, the incoming vlan_id (in the wc) is discarded, and the
        "invalid" vlan (0xffff)  is substituted when forwarding to the slave.

Signed-off-by: Moni Shoua <monis@mellanox.co.il>
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 agomlx4: Add ref counting to port MAC table for RoCE
Jack Morgenstein [Wed, 12 Mar 2014 10:00:40 +0000 (12:00 +0200)]
mlx4: Add ref counting to port MAC table for RoCE

The IB side of RoCE requires the MAC table index of the
MAC address used by its QPs.

To obtain the real MAC index, the IB side registers the
MAC (increasing its ref count, and also returning the
real MAC index) during the modify-qp sequence.

This protects against the ETH side deleting or modifying
that MAC table entry while the QP is active.

Note that until the modify-qp command returns success,
the MAC and VLAN information only has "candidate" status.
If the modify-qp succeeds, the "candidate" info is promoted
to the operational MAC/VLAN info for the qp. If the modify fails,
the candidate MAC/VLAN is unregistered, and the old qp info
is preserved.

The patch is a bit complex, because there are multiple qp
transitions where the primary-path information may be
modified:  INIT-to-RTR, and SQD-to-SQD.

Similarly for the alternate path information.

Therefore the code must handle cases where path information
has already been entered into the QP context by previous
qp transitions.

For the MAC address, the success logic is as follows:
1. If there was no previous MAC, simply move the candidate
   MAC information to the operational information, and reset
   the candidate MAC info.
2. If there was a previous MAC, unregister it.  Then move
   the MAC information from candidate to operational, and
   reset the candidate info (as in 1. above).

The MAC address failure logic is the same for all cases:
 - Unregister the candidate MAC, and reset the candidate MAC info.

For Vlan registration, the logic is similar.

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 agomlx4: In RoCE allow guests to have multiple GIDS
Jack Morgenstein [Wed, 12 Mar 2014 10:00:39 +0000 (12:00 +0200)]
mlx4: In RoCE allow guests to have multiple GIDS

The GIDs are statically distributed, as follows:
PF: gets 16 GIDs
VFs:  Remaining GIDS are divided evenly between VFs activated by the driver.
      If the division is not even, lower-numbered VFs get an extra GID.

For an IB interface, the number of gids per guest remains as before: one gid per guest.

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 agomlx4_core: For RoCE, allow slaves to set the GID entry at that slave's index
Jack Morgenstein [Wed, 12 Mar 2014 10:00:38 +0000 (12:00 +0200)]
mlx4_core: For RoCE, allow slaves to set the GID entry at that slave's index

For IB transport, the host determines the slave GIDs. For ETH (RoCE),
however, the slave's GID is determined by the IP address that the slave
itself assigns to the ETH device used by RoCE.

In this case, the slave must be able to write its GIDs to the HCA gid table
(at the GID indices that slave "owns").

This commit adds processing for the SET_PORT_GID_TABLE opcode modifier
for the SET_PORT command wrapper (so that slaves may modify their GIDS
for RoCE).

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 agomlx4: Adjust QP1 multiplexing for RoCE/SRIOV
Jack Morgenstein [Wed, 12 Mar 2014 10:00:37 +0000 (12:00 +0200)]
mlx4: Adjust QP1 multiplexing for RoCE/SRIOV

This requires the following modifications:
1. Fix build_mlx4_header to properly fill in the ETH fields
2. Adjust mux and demux QP1 flow to support RoCE.

This commit still assumes only one GID per slave for RoCE.
The commit enabling multiple GIDs is a subsequent commit, and
is done separately because of its complexity.

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 agoMerge branch 'tipc'
David S. Miller [Wed, 12 Mar 2014 19:53:54 +0000 (15:53 -0400)]
Merge branch 'tipc'

Jon Maloy says:

====================
tipc: simplifications in socket and port layer

After the removal of the tipc native API the relation between
tipc_port and its API types is strictly one-to-one, i.e, the latter
can now only be a socket API. This change opens up for
simplifications both in the code, data and locking structure.

We start with this series, where we ensure that port and socket
structures are co-allocated. Note that the first commit in the
series is unrelated to the above.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotipc: eliminate redundant lookups in registry
Jon Paul Maloy [Wed, 12 Mar 2014 15:31:13 +0000 (11:31 -0400)]
tipc: eliminate redundant lookups in registry

As an artefact from the native interface, the message sending functions
in the port takes a port ref as first parameter, and then looks up in
the registry to find the corresponding port pointer. This despite the
fact that the only currently existing caller, tipc_sock, already knows
this pointer.

We change the signature of these functions to take a struct tipc_port*
argument, and remove the redundant lookups.

We also remove an unmotivated extra lookup in the function
socket.c:auto_connect(), and, as the lookup functions tipc_port_deref()
and ref_deref() now become unused, we remove these two functions.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotipc: align usage of variable names and macros in socket
Jon Paul Maloy [Wed, 12 Mar 2014 15:31:12 +0000 (11:31 -0400)]
tipc: align usage of variable names and macros in socket

The practice of naming variables in TIPC is inconistent, sometimes
even within the same file.

In this commit we align variable names and declarations within
socket.c, and function and macro names within socket.h. We also
reduce the number of conversion macros to two, in order to make
usage less obsure.

These changes are purely cosmetic.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotipc: eliminate redundant locking
Jon Paul Maloy [Wed, 12 Mar 2014 15:31:11 +0000 (11:31 -0400)]
tipc: eliminate redundant locking

The three functions tipc_portimportance(), tipc_portunreliable() and
tipc_portunreturnable() and their corresponding tipc_set* functions,
are all grabbing port_lock when accessing the targeted port. This is
unnecessary in the current code, since these calls only are made from
within socket downcalls, already protected by sock_lock.

We remove the redundant locking. Also, since the functions now become
trivial one-liners, we move them to port.h and make them inline.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotipc: eliminate upcall function pointers between port and socket
Jon Paul Maloy [Wed, 12 Mar 2014 15:31:10 +0000 (11:31 -0400)]
tipc: eliminate upcall function pointers between port and socket

Due to the original one-to-many relation between port and user API
layers, upcalls to the API have been performed via function pointers,
installed in struct tipc_port at creation. Since this relation now
always is one-to-one, we can instead use ordinary function calls.

We remove the function pointers 'dispatcher' and Â´wakeup' from
struct tipc_port, and replace them with calls to the renamed
functions tipc_sk_rcv() and tipc_sk_wakeup().

At the same time we change the name and signature of the functions
tipc_createport() and tipc_deleteport() to reflect their new role
as mere initialization/destruction functions.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotipc: aggregate port structure into socket structure
Jon Paul Maloy [Wed, 12 Mar 2014 15:31:09 +0000 (11:31 -0400)]
tipc: aggregate port structure into socket structure

After the removal of the tipc native API the relation between
a tipc_port and its API types is strictly one-to-one, i.e, the
latter can now only be a socket API. There is therefore no need
to allocate struct tipc_port and struct sock independently.

In this commit, we aggregate struct tipc_port into struct tipc_sock,
hence saving both CPU cycles and structure complexity.

There are no functional changes in this commit, except for the
elimination of the separate allocation/freeing of tipc_port.
All other changes are just adaptatons to the new data structure.

This commit also opens up for further code simplifications and
code volume reduction, something we will do in later commits.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotipc: remove redundant 'peer_name' field in struct tipc_sock
Jon Paul Maloy [Wed, 12 Mar 2014 15:31:08 +0000 (11:31 -0400)]
tipc: remove redundant 'peer_name' field in struct tipc_sock

The field 'peer_name' in struct tipc_sock is redundant, since
this information already is available from tipc_port, to which
tipc_sock has a reference.

We remove the field, and ensure that peer node and peer port
info instead is fetched via the functions that already exist
for this purpose.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotipc: replace reference table rwlock with spinlock
Jon Paul Maloy [Wed, 12 Mar 2014 15:31:07 +0000 (11:31 -0400)]
tipc: replace reference table rwlock with spinlock

The lock for protecting the reference table is declared as an
RWLOCK, although it is only used in write mode, never in read
mode.

We redefine it to become a spinlock.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoflowcache: Fix resource leaks on namespace exit.
Steffen Klassert [Wed, 12 Mar 2014 08:43:17 +0000 (09:43 +0100)]
flowcache: Fix resource leaks on namespace exit.

We leak an active timer, the hotcpu notifier and all allocated
resources when we exit a namespace. Fix this by introducing a
flow_cache_fini() function where we release the resources before
we exit.

Fixes: ca925cf1534e ("flowcache: Make flow cache name space aware")
Reported-by: Jakub Kicinski <moorray3@wp.pl>
Tested-by: Jakub Kicinski <moorray3@wp.pl>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Fan Du <fan.du@windriver.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agolg-vl600: Convert uses of __constant_<foo> to <foo>
Joe Perches [Wed, 12 Mar 2014 17:22:37 +0000 (10:22 -0700)]
lg-vl600: Convert uses of __constant_<foo> to <foo>

The use of __constant_<foo> has been unnecessary for quite awhile now.

Make these uses consistent with the rest of the kernel.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoxilinx: Convert uses of __constant_<foo> to <foo>
Joe Perches [Wed, 12 Mar 2014 17:22:36 +0000 (10:22 -0700)]
xilinx: Convert uses of __constant_<foo> to <foo>

The use of __constant_<foo> has been unnecessary for quite awhile now.

Make these uses consistent with the rest of the kernel.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobrocade: Convert uses of __constant_<foo> to <foo>
Joe Perches [Wed, 12 Mar 2014 17:22:30 +0000 (10:22 -0700)]
brocade: Convert uses of __constant_<foo> to <foo>

The use of __constant_<foo> has been unnecessary for quite awhile now.

Make these uses consistent with the rest of the kernel.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotipc: Convert uses of __constant_<foo> to <foo>
Joe Perches [Wed, 12 Mar 2014 17:04:20 +0000 (10:04 -0700)]
tipc: Convert uses of __constant_<foo> to <foo>

The use of __constant_<foo> has been unnecessary for quite awhile now.

Make these uses consistent with the rest of the kernel.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoieee802154: Convert uses of __constant_<foo> to <foo>
Joe Perches [Wed, 12 Mar 2014 17:04:18 +0000 (10:04 -0700)]
ieee802154: Convert uses of __constant_<foo> to <foo>

The use of __constant_<foo> has been unnecessary for quite awhile now.

Make these uses consistent with the rest of the kernel.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: Convert uses of __constant_<foo> to <foo>
Joe Perches [Wed, 12 Mar 2014 17:04:17 +0000 (10:04 -0700)]
net: Convert uses of __constant_<foo> to <foo>

The use of __constant_<foo> has been unnecessary for quite awhile now.

Make these uses consistent with the rest of the kernel.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years ago8021q: Convert uses of __constant_<foo> to <foo>
Joe Perches [Wed, 12 Mar 2014 17:04:15 +0000 (10:04 -0700)]
8021q: Convert uses of __constant_<foo> to <foo>

The use of __constant_<foo> has been unnecessary for quite awhile now.

Make these uses consistent with the rest of the kernel.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agogianfar: Fix multi-queue support checks @probe()
Claudiu Manoil [Tue, 11 Mar 2014 16:01:24 +0000 (18:01 +0200)]
gianfar: Fix multi-queue support checks @probe()

priv is not instantiated at gfar_of_init() time, when
parsing the DT for info on supported HW queues.  Before
the netdev can be allocated, the number of supported
queues must be known.  Because the number of supported
queues depends on device type, move the compatibility
checks before netdev allocation.  Local vars are used
to hold the operation mode info before netdev allocation.
This fixes the null accesses for priv->.., in gfar_of_init.

Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agor8152: support dumping the hw counters
hayeswang [Tue, 11 Mar 2014 08:24:19 +0000 (16:24 +0800)]
r8152: support dumping the hw counters

Add dumping the tally counter by ethtool.

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoieee802154: at86rf230: add support for rf233 chip
Thomas Stilwell [Tue, 11 Mar 2014 00:29:25 +0000 (19:29 -0500)]
ieee802154: at86rf230: add support for rf233 chip

The rf233 and rf231 are sufficiently similar that we can treat
rf233 like rf231.

rf233 is missing some features that rf231 has, but we don't currently
make use of them so there's nothing to handle differently yet.

Should we add support in the future for rf231 *_NOCLK or SLEEP states,
or PAD_IO drive strength, exceptions will need to be made for rf233.

Signed-off-by: Thomas Stilwell <stilwellt@openlabs.co>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'pkt_sched_cond_resched'
David S. Miller [Wed, 12 Mar 2014 03:54:56 +0000 (23:54 -0400)]
Merge branch 'pkt_sched_cond_resched'

Eric Dumazet says:

====================
pkt_sched: allow scheduling points

We have seen delays of more than 50ms in class or qdisc dumps, in case
device is under high TX stress, even with the prior 4KB per skb limit.

With the new 16KB limit, this could translate to 200ms delays.

Add cond_resched() to give a chance to higher prio tasks to get cpu.

But before doing so, we need to remove the rcu locking from tc_dump_qdisc()
as David spotted.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agopkt_sched: add cond_resched() to class and qdisc dump
Eric Dumazet [Tue, 11 Mar 2014 00:11:43 +0000 (17:11 -0700)]
pkt_sched: add cond_resched() to class and qdisc dump

We have seen delays of more than 50ms in class or qdisc dumps, in case
device is under high TX stress, even with the prior 4KB per skb limit.

Add cond_resched() to give a chance to higher prio tasks to get cpu.

Signed-off-by; Eric Dumazet <edumazet@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agopkt_sched: do not use rcu in tc_dump_qdisc()
Eric Dumazet [Tue, 11 Mar 2014 00:11:42 +0000 (17:11 -0700)]
pkt_sched: do not use rcu in tc_dump_qdisc()

Like all rtnetlink dump operations, we hold RTNL in tc_dump_qdisc(),
so we do not need to use rcu protection to protect list of netdevices.

This will allow preemption to occur, thus reducing latencies.
Following patch adds explicit cond_resched() calls.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobonding: force cast of IP address in options
stephen hemminger [Mon, 10 Mar 2014 16:48:38 +0000 (09:48 -0700)]
bonding: force cast of IP address in options

The option code is taking IP address and putting it into a generic
container. Force cast to silence sparse warnings.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonetdev: set __percpu attribute on netdev_alloc_pcpu_stats
stephen hemminger [Mon, 10 Mar 2014 16:41:46 +0000 (09:41 -0700)]
netdev: set __percpu attribute on netdev_alloc_pcpu_stats

This patch fixes sparse warnings in vlan driver.
It propagates the sparse __percpu attribute from alloc_percpu
into netdev_alloc_pcpu_stats. I expect it may trigger additional
sparse warnings from other drivers that are missing the __percpu
attribute.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoipv6: ip6_forward: perform skb->pkt_type check at the beginning
Li RongQing [Tue, 11 Mar 2014 02:40:08 +0000 (10:40 +0800)]
ipv6: ip6_forward: perform skb->pkt_type check at the beginning

Packets which have L2 address different from ours should be
already filtered before entering into ip6_forward().

Perform that check at the beginning to avoid processing such packets.

Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agor8152: add skb_cow_head
hayeswang [Tue, 11 Mar 2014 02:20:32 +0000 (10:20 +0800)]
r8152: add skb_cow_head

Call skb_cow_head() before editing the tx packet header. The header
would be reallocated if it is shared.

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: eth: cpsw: Use net_device_stats from struct net_device
Tobias Klauser [Mon, 10 Mar 2014 12:12:23 +0000 (13:12 +0100)]
net: eth: cpsw: Use net_device_stats from struct net_device

Instead of using an own copy of struct net_device_stats in struct
cpsw_priv, use stats from struct net_device. Also remove the thus
unnecessary .ndo_get_stats function, as it just returns dev->stats,
which is the default.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoflowcache: restore a single flow_cache kmem_cache
Eric Dumazet [Mon, 10 Mar 2014 14:09:07 +0000 (07:09 -0700)]
flowcache: restore a single flow_cache kmem_cache

It is not legal to create multiple kmem_cache having the same name.

flowcache can use a single kmem_cache, no need for a per netns
one.

Fixes: ca925cf1534e ("flowcache: Make flow cache name space aware")
Reported-by: Jakub Kicinski <moorray3@wp.pl>
Tested-by: Jakub Kicinski <moorray3@wp.pl>
Tested-by: Fan Du <fan.du@windriver.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: add a pre-check of net_ns in sk_change_net()
Gu Zheng [Mon, 10 Mar 2014 01:57:34 +0000 (09:57 +0800)]
net: add a pre-check of net_ns in sk_change_net()

We do not need to switch the net_ns if the target net_ns the same
as the current one, so here we add a pre-check of net_ns to avoid
this as David suggested.

Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotcp: timestamp SYN+DATA messages
Eric Dumazet [Mon, 10 Mar 2014 00:36:02 +0000 (17:36 -0700)]
tcp: timestamp SYN+DATA messages

All skb in socket write queue should be properly timestamped.

In case of FastOpen, we special case the SYN+DATA 'message' as we
queue in socket wrote queue the two fallback skbs:

1) SYN message by itself.
2) DATA segment by itself.

We should make sure these skbs have proper timestamps.

Add a WARN_ON_ONCE() to eventually catch future violations.

Fixes: 740b0f1841f6 ("tcp: switch rtt estimations to usec resolution")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agohyperv: Change the receive buffer size for legacy hosts
Haiyang Zhang [Sun, 9 Mar 2014 23:10:59 +0000 (16:10 -0700)]
hyperv: Change the receive buffer size for legacy hosts

Due to a bug in the Hyper-V host verion 2008R2, we need to use a slightly smaller
receive buffer size, otherwise the buffer will not be accepted by the legacy hosts.

Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years ago6lowpan: reassembly: fix access of ctl table entry
Alexander Aring [Sun, 9 Mar 2014 08:51:40 +0000 (09:51 +0100)]
6lowpan: reassembly: fix access of ctl table entry

Correct offset is 3 of the 6lowpanfrag_max_datagram_size value in proc
entry ctl table and not 2.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'hyperv-next'
David S. Miller [Mon, 10 Mar 2014 19:52:17 +0000 (15:52 -0400)]
Merge branch 'hyperv-next'

K. Y. Srinivasan says:

====================
Drivers: net: hyperv: Enable various offloads

This patch set enables both checksum as well as segmentation offload.
As part of this effort I have enabled scatter gather I/O a well.

In version 2 of these patches, I addressed comments from David Miller and
Dan Carpenter.

In this version I have addressed the latest comments from David Miller.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoDrivers: net: hyperv: Enable large send offload
KY Srinivasan [Sun, 9 Mar 2014 03:23:18 +0000 (19:23 -0800)]
Drivers: net: hyperv: Enable large send offload

Enable segmentation offload.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoDrivers: net: hyperv: Enable send side checksum offload
KY Srinivasan [Sun, 9 Mar 2014 03:23:17 +0000 (19:23 -0800)]
Drivers: net: hyperv: Enable send side checksum offload

Enable send side checksum offload.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoDrivers: net: hyperv: Enable receive side IP checksum offload
KY Srinivasan [Sun, 9 Mar 2014 03:23:16 +0000 (19:23 -0800)]
Drivers: net: hyperv: Enable receive side IP checksum offload

Enable receive side checksum offload.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoDrivers: net: hyperv: Enable offloads on the host
KY Srinivasan [Sun, 9 Mar 2014 03:23:15 +0000 (19:23 -0800)]
Drivers: net: hyperv: Enable offloads on the host

Prior to enabling guest side offloads, enable the offloads on the host.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoDrivers: net: hyperv: Cleanup the send path
KY Srinivasan [Sun, 9 Mar 2014 03:23:14 +0000 (19:23 -0800)]
Drivers: net: hyperv: Cleanup the send path

In preparation for enabling offloads, cleanup the send path.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoDrivers: net: hyperv: Enable scatter gather I/O
KY Srinivasan [Sun, 9 Mar 2014 03:23:13 +0000 (19:23 -0800)]
Drivers: net: hyperv: Enable scatter gather I/O

Cleanup the code and enable scatter gather I/O.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agosky2: allow mac to come from dt
Tim Harvey [Sat, 8 Mar 2014 04:59:53 +0000 (20:59 -0800)]
sky2: allow mac to come from dt

The driver reads the mac address from the device registers which would
need to have been programmed by the bootloader.  This patch adds
the ability to pull the mac from devicetree via the pci device dt node.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Cc: netdev@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>
Changes since v2:
 - eliminated use of stack tmpaddr per feedback

Changes since v1:
 - simplified based on feedback
 - fixed formatting
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agol2tp: fix unused variable warning
Eric Dumazet [Fri, 7 Mar 2014 22:57:43 +0000 (14:57 -0800)]
l2tp: fix unused variable warning

net/l2tp/l2tp_core.c:1111:15: warning: unused variable
'sk' [-Wunused-variable]

Fixes: 31c70d5956fc ("l2tp: keep original skb ownership")
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoIB/mlx5_core: remove unreachable function call in module init
Kleber Sacilotto de Souza [Fri, 7 Mar 2014 22:48:25 +0000 (19:48 -0300)]
IB/mlx5_core: remove unreachable function call in module init

The call to mlx5_health_cleanup() in the module init function can never
be reached. Removing it.

Signed-off-by: Kleber Sacilotto de Souza <klebers@linux.vnet.ibm.com>
Acked-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonetlink: autosize skb lengthes
Eric Dumazet [Fri, 7 Mar 2014 20:02:33 +0000 (12:02 -0800)]
netlink: autosize skb lengthes

One known problem with netlink is the fact that NLMSG_GOODSIZE is
really small on PAGE_SIZE==4096 architectures, and it is difficult
to know in advance what buffer size is used by the application.

This patch adds an automatic learning of the size.

First netlink message will still be limited to ~4K, but if user used
bigger buffers, then following messages will be able to use up to 16KB.

This speedups dump() operations by a large factor and should be safe
for legacy applications.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Thomas Graf <tgraf@suug.ch>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agosfc: Use ether_addr_copy and eth_broadcast_addr
Edward Cree [Fri, 7 Mar 2014 18:27:41 +0000 (18:27 +0000)]
sfc: Use ether_addr_copy and eth_broadcast_addr

Faster than memcpy/memset on some architectures.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'gianfar-next'
David S. Miller [Mon, 10 Mar 2014 17:17:44 +0000 (13:17 -0400)]
Merge branch 'gianfar-next'

Claudiu Manoil says:

====================
gianfar: Tx timeout issue

There's an older Tx timeout issue showing up on etsec2 devices
with 2 CPUs.  I pinned this issue down to processing overhead
incurred by supporting multiple Tx/Rx rings, as explained in
the 2nd patch below.  But before this, there's also a concurency
issue leading to Rx/Tx spurrious interrupts, addressed by the
'Tx NAPI' patch below.
The Tx timeout can be triggered with multiple Tx flows,
'iperf -c -N 8' commands, on a 2 CPUs etsec2 based (P1020) board.

Before the patches:
"""
root@p1020rdb-pc:~# iperf -c 172.16.1.3 -n 1000M -P 8 &
[...]
root@p1020rdb-pc:~# NETDEV WATCHDOG: eth1 (fsl-gianfar): transmit queue 1 timed out
WARNING: at net/sched/sch_generic.c:279
Modules linked in:
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 3.13.0-rc3-03386-g89ea59c #23
task: ed84ef40 ti: ed868000 task.ti: ed868000
NIP: c04627a8 LR: c04627a8 CTR: c02fb270
REGS: ed869d00 TRAP: 0700   Not tainted  (3.13.0-rc3-03386-g89ea59c)
MSR: 00029000 <CE,EE,ME>  CR: 44000022  XER: 20000000
[...]

root@p1020rdb-pc:~# [ ID] Interval       Transfer     Bandwidth
[  5]  0.0-19.3 sec  1000 MBytes    434 Mbits/sec
[  8]  0.0-39.7 sec  1000 MBytes    211 Mbits/sec
[  9]  0.0-40.1 sec  1000 MBytes    209 Mbits/sec
[  3]  0.0-40.2 sec  1000 MBytes    209 Mbits/sec
[ 10]  0.0-59.0 sec  1000 MBytes    142 Mbits/sec
[  7]  0.0-74.6 sec  1000 MBytes    112 Mbits/sec
[  6]  0.0-74.7 sec  1000 MBytes    112 Mbits/sec
[  4]  0.0-74.7 sec  1000 MBytes    112 Mbits/sec
[SUM]  0.0-74.7 sec  7.81 GBytes    898 Mbits/sec

root@p1020rdb-pc:~# ifconfig eth1
eth1      Link encap:Ethernet  HWaddr 00:04:9f:00:13:01
          inet addr:172.16.1.1  Bcast:172.16.255.255  Mask:255.255.0.0
          inet6 addr: fe80::204:9fff:fe00:1301/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:708722 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8717849 errors:6 dropped:0 overruns:1470 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:58118018 (55.4 MiB)  TX bytes:274069482 (261.3 MiB)
          Base address:0xa000

"""

After applying the patches:
"""
root@p1020rdb-pc:~# iperf -c 172.16.1.3 -n 1000M -P 8 &
[...]
root@p1020rdb-pc:~# [ ID] Interval       Transfer     Bandwidth
[  9]  0.0-70.5 sec  1000 MBytes    119 Mbits/sec
[  5]  0.0-70.5 sec  1000 MBytes    119 Mbits/sec
[  6]  0.0-70.7 sec  1000 MBytes    119 Mbits/sec
[  4]  0.0-71.0 sec  1000 MBytes    118 Mbits/sec
[  8]  0.0-71.1 sec  1000 MBytes    118 Mbits/sec
[  3]  0.0-71.2 sec  1000 MBytes    118 Mbits/sec
[ 10]  0.0-71.3 sec  1000 MBytes    118 Mbits/sec
[  7]  0.0-71.3 sec  1000 MBytes    118 Mbits/sec
[SUM]  0.0-71.3 sec  7.81 GBytes    942 Mbits/sec

root@p1020rdb-pc:~# ifconfig eth1
eth1      Link encap:Ethernet  HWaddr 00:04:9f:00:13:01
          inet addr:172.16.1.1  Bcast:172.16.255.255  Mask:255.255.0.0
          inet6 addr: fe80::204:9fff:fe00:1301/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:728446 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8690057 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:59732650 (56.9 MiB)  TX bytes:271554306 (258.9 MiB)
          Base address:0xa000
"""
v2: PATCH 2:
    Replaced CPP check with run-time condition to
    limit the number of queues. Updated comments.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agogianfar: Use Single-Queue polling for "fsl,etsec2"
Claudiu Manoil [Fri, 7 Mar 2014 12:42:46 +0000 (14:42 +0200)]
gianfar: Use Single-Queue polling for "fsl,etsec2"

For the "fsl,etsec2" compatible models the driver currently
supports 8 Tx and Rx DMA rings (aka HW queues).  However, there
are only 2 pairs of Rx/Tx interrupt lines, as these controllers
are integrated in low power SoCs with 2 CPUs at most.  As a result,
there are at most 2 NAPI instances that have to service multiple
Tx and Rx queues for these devices.  This complicates the NAPI
polling routine having to iterate over the mutiple Rx/Tx queues
hooked to the same interrupt lines.  And there's also an overhead
at HW level, as the controller needs to service all the 8 Tx rings
in a round robin manner.  The combined overhead shows up for multi
parallel Tx flows transmitted by the kernel stack, when the driver
usually starts returning NETDEV_TX_BUSY leading to NETDEV WATCHDOG
Tx timeout triggering if the Tx path is congested for too long.

As an alternative, this patch makes the driver support only one
Tx/Rx DMA ring per NAPI instance (per interrupt group or pair
of Tx/Rx interrupt lines) by default.  The simplified single queue
polling routine (gfar_poll_sq) will be the default napi poll routine
for the etsec2 devices too.  Some adjustments needed to be made to
link the Tx/Rx HW queues with each NAPI instance (2 in this case).
The gfar_poll_sq() is already successfully used by older SQ_SG_MODE
(single interrupt group) controllers.
This patch fixes Tx timeout triggering under heavy Tx traffic load
(i.e. iperf -c -P 8) for the "fsl,etsec2" (currently the only
MQ_MG_MODE devices).  There's also a significant memory footprint
reduction by supporting 2 Rx/Tx DMA rings (at most), instead of 8,
for these devices.

Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agogianfar: Separate out the Tx interrupt handling (Tx NAPI)
Claudiu Manoil [Fri, 7 Mar 2014 12:42:45 +0000 (14:42 +0200)]
gianfar: Separate out the Tx interrupt handling (Tx NAPI)

There are some concurrency issues on devices w/ 2 CPUs related
to the handling of Rx and Tx interrupts.  eTSEC has separate
interrupt lines for Rx and Tx but a single imask register
to mask these interrupts and a single NAPI instance to handle
both Rx and Tx work.  As a result, the Rx and Tx ISRs are
identical, both are invoking gfar_schedule_cleanup(), however
both handlers can be entered at the same time when the Rx and
Tx interrupts are taken by different CPUs.  In this case
spurrious interrupts (SPU) show up (in /proc/interrupts)
indicating a concurrency issue.  Also, Tx overruns followed
by Tx timeout have been observed under heavy Tx traffic load.

To address these issues, the schedule cleanup ISR part has
been changed to handle the Rx and Tx interrupts independently.
The patch adds a separate NAPI poll routine for Tx cleanup to
be triggerred independently by the Tx confirmation interrupts
only.  Existing poll functions are modified to handle only
the Rx path processing.  The Tx poll routine does not need a
budget, since Tx processing doesn't consume NAPI budget, and
hence it is registered with minimum NAPI weight.
NAPI scheduling does not require locking since there are
different NAPI instances between the Rx and Tx confirmation
paths now.
So, the patch fixes the occurence of spurrious Rx/Tx interrupts.
Tx overruns also occur less frequently now.

Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agovlan: use use ether_addr_equal_64bits to instead of ether_addr_equal
dingtianhong [Fri, 7 Mar 2014 10:45:31 +0000 (18:45 +0800)]
vlan: use use ether_addr_equal_64bits to instead of ether_addr_equal

Ether_addr_equal_64bits is more efficient than ether_addr_equal, and
can be used when each argument is an array within a structure that
contains at least two bytes of data beyond the array, so it is safe
to use it for vlan, and make sense for fast path.

Cc: Joe Perches <joe@perches.com>
Cc: Patrick McHardy <kaber@trash.net>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agovlan: slight optimization for vlan_do_receive()
dingtianhong [Fri, 7 Mar 2014 10:45:30 +0000 (18:45 +0800)]
vlan: slight optimization for vlan_do_receive()

According Joe's suggestion, maybe it'd be faster to add an unlikely to
the test for PCKET_OTHERHOST, so I add it and see whether the performance
could be better, although the differences is so small and negligible, but
it is hard to catch that any lower device would set the skb type to
PACKET_OTHERHOST, so most of time, I think it make sense to add unlikely
for the test.

Cc: Joe Perches <joe@perches.com>
Cc: Patrick McHardy <kaber@trash.net>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agopkt_sched: fq: do not hold qdisc lock while allocating memory
Eric Dumazet [Fri, 7 Mar 2014 06:57:52 +0000 (22:57 -0800)]
pkt_sched: fq: do not hold qdisc lock while allocating memory

Resizing fq hash table allocates memory while holding qdisc spinlock,
with BH disabled.

This is definitely not good, as allocation might sleep.

We can drop the lock and get it when needed, we hold RTNL so no other
changes can happen at the same time.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Fixes: afe4fd062416 ("pkt_sched: fq: Fair Queue packet scheduler")
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 [Sat, 8 Mar 2014 23:49:29 +0000 (18:49 -0500)]
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-next

Jeff Kirsher says:

====================
Intel Wired LAN Driver Updates

This series contains updates to e1000e, ixgbevf and igb.

Majority of this series contains fixes and cleanups to e1000e,
most notably are:

Todd provides a fix to PTP in e1000e which adds a lock in e1000e_phc_adjfreq
to prevent concurrent changes to TIMINCA and SYSTIMH/L.  Then provides an
igb fix to use ARRAY_SIZE for array size calculation.

David provides the remaining e1000e which contain:
 - cleanup of pointer references that are no longer used
 - fix an issue on systems with Management Engine enabled with the
   ethernet cable unplugged
 - fix an issue on 82579 where enabling EEE LPI sooner than one second
   after link up causes link issues on some switches
 - refactor the power management flows to prevent the suspend path from
   being executed twice when hibernating
 - refactor the runtime power management to fix interfering with the
   functionality of Energy Efficient Ethernet when enabled and to fix
   the device from repeatedly flip between suspend and resume with the
   interface administratively downed
 - enable the feature PHY Ultra Low Power Mode which is a power saving
   feature that reduces the power consumption of the PHY when a cable is
   not connected
 - fix the ethtool offline tests for 82579 parts
 - fix SHRA register access for 82579 parts which was introduced by
   previous commit c3a0dce35af0 "e1000e: fix overrun of PHY RAR array"

Florian provides a fix for ixgbevf where skb->pkt_type was being checked
like a bitmask, but it is not a bitmask.

Fix an issue reported by Stephen Hemminger where there was a warning
about code defined but never used if IGB_HWMON is not defined.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoigb: fix warning if !CONFIG_IGB_HWMON
Jeff Kirsher [Thu, 6 Mar 2014 05:28:06 +0000 (05:28 +0000)]
igb: fix warning if !CONFIG_IGB_HWMON

Fix warning about code defined but never used if IGB_HWMON not defined.

Reported-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoigb: fix array size calculation
Todd Fujinaka [Tue, 4 Mar 2014 02:25:22 +0000 (02:25 +0000)]
igb: fix array size calculation

Use ARRAY_SIZE for array size calculation.

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 agoixgbevf: fix skb->pkt_type checks
Florian Fainelli [Fri, 28 Feb 2014 23:46:49 +0000 (15:46 -0800)]
ixgbevf: fix skb->pkt_type checks

skb->pkt_type is not a bitmask, but contains only value at a time from
the range defined in include/uapi/linux/if_packet.h.

Checking it like if it was a bitmask of values would also cause
PACKET_OTHERHOST, PACKET_LOOPBACK and PACKET_FASTROUTE to be matched by
this check since their lower 2 bits are also set, although that does not
fix a real bug, it is still potentially confusing.

This bogus check was introduced in commit 815cccbf ("ixgbe: add setlink,
getlink support to ixgbe and ixgbevf").

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoe1000e: Fix SHRA register access for 82579
David Ertman [Wed, 5 Mar 2014 07:50:46 +0000 (07:50 +0000)]
e1000e: Fix SHRA register access for 82579

Previous commit c3a0dce35af0 fixed an overrun for the RAR on i218 devices.
This commit also attempted to homogenize the RAR/SHRA access for all parts
accessed by the e1000e driver.  This change introduced an error for
assigning MAC addresses to guest OS's for 82579 devices.

Only RAR[0] is accessible to the driver for 82579 parts, and additional
addresses must be placed into the SHRA[L|H] registers.  The rar_entry_count
was changed in the previous commit to an inaccurate value that accounted
for all RAR and SHRA registers, not just the ones usable by the driver.

This patch fixes the count to the correct value and adjusts the
e1000_rar_set_pch2lan() function to user the correct index.

Cc: John Greene <jogreene@redhat.com>
Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoe1000e: Fix ethtool offline tests for 82579 parts
David Ertman [Wed, 5 Mar 2014 07:54:19 +0000 (07:54 +0000)]
e1000e: Fix ethtool offline tests for 82579 parts

Changes to the rar_entry_count value require a change to the indexing
used to access the SHRA[H|L] registers when testing them with
'ethtool -t <iface> offline'

Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoe1000e: Fix not generating an error on invalid load parameter
David Ertman [Wed, 26 Feb 2014 00:02:24 +0000 (00:02 +0000)]
e1000e: Fix not generating an error on invalid load parameter

Valid values for InterruptThrottleRate are 10-100000, or one of
0, 1, 3, 4.  '2' is not valid.  This is a legacy from the branching
from the e1000 driver code that e1000e was based from.

Prior to this patch, if the e1000e driver  was loaded with a forced
invalid InterruptThrottleRate of '2', then no throttle rate would be
set and no error message generated.

Now, a message will be generated that an invalid value was used and the
value for InterruptThrottleRate will be set to the default value.

Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoe1000e: Feature Enable PHY Ultra Low Power Mode (ULP)
David Ertman [Sat, 22 Feb 2014 03:15:17 +0000 (03:15 +0000)]
e1000e: Feature Enable PHY Ultra Low Power Mode (ULP)

ULP is a power saving feature that reduces the power consumption of the
PHY when a cable is not connected.

ULP is gated on the following conditions:
1) The hardware must support ULP.  Currently this is only I218
   devices from Intel
2) ULP is initiated by the driver, so, no driver results in no ULP.
3) ULP's implementation utilizes Runtime Power Management to toggle its
   execution.  ULP is enabled/disabled based on the state of Runtime PM.
4) ULP is not active when wake-on-unicast, multicast or broadcast is active
   as these features are mutually-exclusive.

Since the PHY is in an unavailable state while ULP is active, any access
of the PHY registers will fail.  This is resolved by utilizing kernel
calls that cause the device to exit Runtime PM (e.g. pm_runtime_get_sync)
and then, after PHY access is complete,  allow the device to resume
Runtime PM (e.g. pm_runtime_put_sync).

Under certain conditions, toggling the LANPHYPC is necessary to disable
ULP mode.  Break out existing code to toggle LANPHYPC to a new function
to avoid code duplication.

Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com>
Cc: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoe1000e Refactor of Runtime Power Management
David Ertman [Fri, 14 Feb 2014 07:16:46 +0000 (07:16 +0000)]
e1000e Refactor of Runtime Power Management

Fix issues with:
RuntimePM causing the device to repeatedly flip between suspend and resume
with the interface administratively downed.
Having RuntimePM enabled interfering with the functionality of Energy
Efficient Ethernet.

Added checks to disallow functions that should not be executed if the
device is currently runtime suspended

Make runtime_idle callback to use same deterministic behavior as the igb
driver.

Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com>
Acked-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoe1000e: Refactor PM flows
David Ertman [Fri, 14 Feb 2014 07:16:41 +0000 (07:16 +0000)]
e1000e: Refactor PM flows

Refactor the system power management flows to prevent the suspend path from
being executed twice when hibernating since both the freeze and
poweroff callbacks were set to e1000_suspend() via SET_SYSTEM_SLEEP_PM_OPS.
There are HW workarounds that are performed during this flow and calling
them twice was causing erroneous behavior.

Re-arrange the code to take advantage of common code paths and explicitly
set the individual dev_pm_ops callbacks for suspend, resume, freeze,
thaw, poweroff and restore.

Add a boolean parameter (reset) to the e1000e_down function to allow
for cases when the HW should not be reset when downed during a PM event.

Now that all suspend/shutdown paths result in a call to __e1000_shutdown()
that checks Wake on Lan status, removing redundant check for WoL in
e1000_power_down_phy().

Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com>
Acked-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoe1000e: Add missing branding strings in ich8lan.c
David Ertman [Wed, 5 Feb 2014 01:09:54 +0000 (01:09 +0000)]
e1000e: Add missing branding strings in ich8lan.c

Branding strings from recently released and soon to be released
hardware configurations that are supported by e1000e.

Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com>
Acked-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoe1000e: Cleanup - Update GPL header and Copyright
David Ertman [Tue, 4 Feb 2014 01:56:06 +0000 (01:56 +0000)]
e1000e: Cleanup - Update GPL header and Copyright

This patch is to update the GPL header by removing the portion that
refers to the Free Software Foundation address.

Change the copyright date for 2014.

Reformat the header comments to conform to kernel networking coding norms

Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoe1000e: Fix 82579 sets LPI too early.
David Ertman [Fri, 24 Jan 2014 23:07:48 +0000 (23:07 +0000)]
e1000e: Fix 82579 sets LPI too early.

Enabling EEE LPI sooner than one second after link up on 82579 causes link
issues with some switches.

Remove EEE enablement for 82579 parts from the link initialization flow to
avoid initializing too early.  EEE initialization for 82579 will be done
in e1000e_update_phy_task.

Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com>
Acked-by: Bruce W Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoe1000e: Resolve issues with Management Engine (ME) briefly blocking PHY resets
David Ertman [Thu, 23 Jan 2014 06:29:13 +0000 (06:29 +0000)]
e1000e: Resolve issues with Management Engine (ME) briefly blocking PHY resets

On a ME enabled system with the cable out, the driver init flow would
generate an erroneous message indicating that resets were being blocked
by an active ME session.  Cause was ME clearing the semaphore bit to
block further PHY resets for up to 50 msec during power-on/cycle.  After
this interval, ME would re-set the bit and allow PHY resets.

To resolve this, change the flow of e1000e_phy_hw_reset_generic() to
utilize a delay and retry method.  Poll the FWSM register to minimize
any extra time added to the flow.  If the delay times out at 100ms
(checked in 10msec increments), then return the value E1000_BLK_PHY_RESET,
as this is the accurate state of the PHY.  Attempting to alter just the
call to e1000e_phy_hw_reset_generic() in e1000_init_phy_workarounds_pchlan()
just caused the problem to move further down the flow.

Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com>
Acked-by: Bruce W. Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoe1000e: Cleanup unecessary references
David Ertman [Wed, 22 Jan 2014 00:21:41 +0000 (00:21 +0000)]
e1000e: Cleanup unecessary references

Cleaning up some pointer references that are no longer necessary

Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoe1000e: PTP lock in e1000e_phc_adjustfreq
Todd Fujinaka [Sat, 18 Jan 2014 06:09:33 +0000 (06:09 +0000)]
e1000e: PTP lock in e1000e_phc_adjustfreq

Add lock in e1000e_phc_adjfreq to prevent concurrent changes to TIMINCA
and SYSTIMH/L.

Signed-off-by: Todd Fujinaka <todd.fujinaka@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years ago6lowpan: reassembly: fix return of init function
Alexander Aring [Fri, 7 Mar 2014 10:06:54 +0000 (11:06 +0100)]
6lowpan: reassembly: fix return of init function

This patch adds a missing return after fragmentation init. Otherwise we
register a sysctl interface and deregister it afterwards which makes no
sense.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge tag 'linux-can-next-for-3.15-20140307' of git://gitorious.org/linux-can/linux...
David S. Miller [Fri, 7 Mar 2014 22:08:57 +0000 (17:08 -0500)]
Merge tag 'linux-can-next-for-3.15-20140307' of git://gitorious.org/linux-can/linux-can-next

Marc Kleine-Budde says:

====================
pull-request: can-next 2014-02-12

this is a pull request of twelve patches for net-next/master.

Alexander Shiyan contributes two patches for the mcp251x, one making
the driver more quiet and the other one improves the compile time
coverage by removing the #ifdef CONFIG_PM_SLEEP. Then two patches for
the flexcan driver by me, one removing the #ifdef CONFIG_PM_SLEEP, too,
the other one making use of platform_get_device_id(). Another patch by
me which converts the janz-ican3 driver to use netdev_<level>(). The
remaining 7 patches are by Oliver Hartkopp, they add CAN FD support to
the netlink configuration interface.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>