Commit Graph

536326 Commits

Author SHA1 Message Date
Phil Sutter
f84bb1eac0 net: fix IFF_NO_QUEUE for drivers using alloc_netdev
Printing a warning in alloc_netdev_mqs() if tx_queue_len is zero and
IFF_NO_QUEUE not set is not appropriate since drivers may use one of the
alloc_netdev* macros instead of alloc_etherdev*, thereby not
intentionally leaving tx_queue_len uninitialized. Instead check here if
tx_queue_len is zero and set IFF_NO_QUEUE, so the value of tx_queue_len
can be ignored in net/sched_generic.c.

Fixes: 906470c ("net: warn if drivers set tx_queue_len = 0")
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 17:14:29 -07:00
Jean Sacren
69dba9bbc5 sock: fix kernel doc error
The symbol '__sk_reclaim' is not present in the current tree. Apparently
'__sk_reclaim' was meant to be '__sk_mem_reclaim', so fix it with the
right symbol name for the kernel doc.

Signed-off-by: Jean Sacren <sakiwit@gmail.com>
Cc: Hideo Aoki <haoki@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 17:12:41 -07:00
Carol L Soto
b0f6446377 net/mlx4_core: Fix unintialized variable used in error path
The uninitialized value name in mlx4_en_activate_cq was used in order
to print an error message. Fixing it by replacing it with cq->vector.

Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Carol L Soto <clsoto@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 16:40:27 -07:00
Carol L Soto
9293267a3e net/mlx4_core: Capping number of requested MSIXs to MAX_MSIX
We currently manage IRQs in pool_bm which is a bit field
of MAX_MSIX bits. Thus, allocating more than MAX_MSIX
interrupts can't be managed in pool_bm.
Fixing this by capping number of requested MSIXs to
MAX_MSIX.

Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Carol L Soto <clsoto@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 16:40:26 -07:00
Nikolay Aleksandrov
b22fbf22f8 bridge: fdb: rearrange net_bridge_fdb_entry
While looking into fixing the local entries scalability issue I noticed
that the structure is badly arranged because vlan_id would fall in a
second cache line while keeping rcu which is used only when deleting
in the first, so re-arrange the structure and push rcu to the end so we
can get 16 bytes which can be used for other fields (by pushing rcu
fully in the second 64 byte chunk). With this change all the core
necessary information when doing fdb lookups will be available in a
single cache line.

pahole before (note vlan_id):
struct net_bridge_fdb_entry {
	struct hlist_node          hlist;                /*     0    16 */
	struct net_bridge_port *   dst;                  /*    16     8 */
	struct callback_head       rcu;                  /*    24    16 */
	long unsigned int          updated;              /*    40     8 */
	long unsigned int          used;                 /*    48     8 */
	mac_addr                   addr;                 /*    56     6 */
	unsigned char              is_local:1;           /*    62: 7  1 */
	unsigned char              is_static:1;          /*    62: 6  1 */
	unsigned char              added_by_user:1;      /*    62: 5  1 */
	unsigned char              added_by_external_learn:1; /*    62: 4  1 */

	/* XXX 4 bits hole, try to pack */
	/* XXX 1 byte hole, try to pack */

	/* --- cacheline 1 boundary (64 bytes) --- */
	__u16                      vlan_id;              /*    64     2 */

	/* size: 72, cachelines: 2, members: 11 */
	/* sum members: 65, holes: 1, sum holes: 1 */
	/* bit holes: 1, sum bit holes: 4 bits */
	/* padding: 6 */
	/* last cacheline: 8 bytes */
}

pahole after (note vlan_id):
struct net_bridge_fdb_entry {
	struct hlist_node          hlist;                /*     0    16 */
	struct net_bridge_port *   dst;                  /*    16     8 */
	long unsigned int          updated;              /*    24     8 */
	long unsigned int          used;                 /*    32     8 */
	mac_addr                   addr;                 /*    40     6 */
	__u16                      vlan_id;              /*    46     2 */
	unsigned char              is_local:1;           /*    48: 7  1 */
	unsigned char              is_static:1;          /*    48: 6  1 */
	unsigned char              added_by_user:1;      /*    48: 5  1 */
	unsigned char              added_by_external_learn:1; /*    48: 4  1 */

	/* XXX 4 bits hole, try to pack */
	/* XXX 7 bytes hole, try to pack */

	struct callback_head       rcu;                  /*    56    16 */
	/* --- cacheline 1 boundary (64 bytes) was 8 bytes ago --- */

	/* size: 72, cachelines: 2, members: 11 */
	/* sum members: 65, holes: 1, sum holes: 7 */
	/* bit holes: 1, sum bit holes: 4 bits */
	/* last cacheline: 8 bytes */
}

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 16:38:52 -07:00
David S. Miller
d3a730971b Merge branch 'ovs-v6-build-err'
Joe Stringer says:

====================
OPENVSWITCH && !NETFILTER build fix.

Fix issues reported by kbuild test robot:

All error/warnings (new ones prefixed by >>):

   net/openvswitch/actions.c: In function 'ovs_fragment':
>> net/openvswitch/actions.c:705:16: error: implicit declaration of
function 'nf_get_ipv6_ops' [-Werror=implicit-function-declaration]
      const struct nf_ipv6_ops *v6ops = nf_get_ipv6_ops();
                   ^
>> net/openvswitch/actions.c:705:37: warning: initialization makes
pointer from integer without a cast
      const struct nf_ipv6_ops *v6ops = nf_get_ipv6_ops();
                                        ^
>> net/openvswitch/actions.c:707:19: error: storage size of 'ovs_rt'
isn't known
      struct rt6_info ovs_rt;
                      ^
>> net/openvswitch/actions.c:724:8: error: dereferencing pointer to
incomplete type
      v6ops->fragment(skb->sk, skb, ovs_vport_output);
           ^
>> net/openvswitch/actions.c:707:19: warning: unused variable 'ovs_rt'
[-Wunused-variable]
      struct rt6_info ovs_rt;
                      ^
   cc1: some warnings being treated as errors
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 16:35:51 -07:00
Joe Stringer
7b85b4dff2 openvswitch: Include ip6_fib.h.
kbuild test robot reports that certain configurations will not
automatically pick up on the "struct rt6_info" definition, so explicitly
include the header for this structure.

Fixes: 7f8a436 "openvswitch: Add conntrack action"
Signed-off-by: Joe Stringer <joestringer@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 16:35:51 -07:00
Joe Stringer
2e4cfae2a8 netfilter: Define v6ops in !CONFIG_NETFILTER case.
When CONFIG_OPENVSWITCH is set, and CONFIG_NETFILTER is not set, the
openvswitch IPv6 fragmentation handling cannot refer to ipv6_ops because
it isn't defined. Add a dummy version to avoid #ifdefs in source files.

Fixes: 7f8a436 "openvswitch: Add conntrack action"
Signed-off-by: Joe Stringer <joestringer@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 16:35:51 -07:00
David S. Miller
c4d3e22438 Merge branch 'mlxsw-small-updates'
Jiri Pirko says:

====================
mlxsw: small driver update

Ido Schimmel (2):
  mlxsw: Remove duplicate included header
  mlxsw: Make mailboxes 4KB aligned

Jiri Pirko (1):
  mlxsw: adjust transmit fail log message level in __mlxsw_emad_transmit
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 16:31:17 -07:00
Ido Schimmel
1e81779ae4 mlxsw: Make mailboxes 4KB aligned
The HW-SW contract requires mailboxes passed to the firmware to be 4KB
aligned. Previously, these mailboxes were mapped using streaming DMA
routines, which do not guarantee the bus addresses to be 4KB aligned.
Under certain conditions this constraint was indeed violated and errors
were observed.

By using consistent DMA mapping routines together with a mailbox size of
4KB we are guaranteed not to violate the constraint.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 16:31:17 -07:00
Jiri Pirko
262df6919e mlxsw: adjust transmit fail log message level in __mlxsw_emad_transmit
When transmit fails, it is an error, not a warning.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Elad Raz <eladr@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 16:31:17 -07:00
Ido Schimmel
a585dabd96 mlxsw: Remove duplicate included header
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Elad Raz <eladr@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 16:31:17 -07:00
David S. Miller
ec5d165555 Merge branch 'rocker-master-change'
Jiri Pirko says:

====================
rocker: make master change handling nicer

Jiri Pirko (6):
  net: introduce change upper device notifier change info
  net: add netif_is_bridge_master helper
  net: add netif_is_ovs_master helper with IFF_OPENVSWITCH private flag
  net: kill long time unused bonding private flags
  rocker: use new helper to figure out master kind
  rocker: use change upper info
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 16:28:35 -07:00
Jiri Pirko
686ed3047e rocker: use change upper info
Since now information about changed upper is passed along, benefit from
that and use this info directly.

This also fixes possible issues that could happen when non-master device
is added (current code does not distinguish between master and non-master
upper device).

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Scott Feldman <sfeldma@gmail.com
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 16:28:35 -07:00
Jiri Pirko
fb4bf21434 rocker: use new helper to figure out master kind
Looking at rtnl kind string is kind of ugly. So use new helpers to do
this in nicer way.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Scott Feldman <sfeldma@gmail.com
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 16:28:35 -07:00
Jiri Pirko
0dc1549bfd net: kill long time unused bonding private flags
We don't use them for years, just kill them now.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 16:28:35 -07:00
Jiri Pirko
35d4e17252 net: add netif_is_ovs_master helper with IFF_OPENVSWITCH private flag
Add this helper so code can easily figure out if netdev is openswitch.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 16:28:35 -07:00
Jiri Pirko
0894ae3f0a net: add netif_is_bridge_master helper
Add this helper so code can easily figure out if netdev is a bridge.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 16:28:34 -07:00
Jiri Pirko
0e4ead9d7b net: introduce change upper device notifier change info
Add info that is passed along with NETDEV_CHANGEUPPER event.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 16:28:34 -07:00
Jason Wang
547c890cfd virtio-net: avoid unnecessary sg initialzation
Usually an skb does not have up to MAX_SKB_FRAGS frags. So no need to
initialize the unuse part of sg. This patch initialize the sg based on
the real number it will used:

- during xmit, it could be inferred from nr_frags and can_push.
- for small receive buffer, it will also be 2.

Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 15:51:45 -07:00
David S. Miller
5e0aa59728 Merge branch 'geneve-consolidation'
Pravin B Shelar says:

====================
Geneve: Add support for tunnel metadata mode

Following patches adds support for Geneve tunnel metadata
mode. OVS can make use of Geneve net-device with tunnel
metadata API from kernel.

This also allows us to consolidate Geneve implementation
from two kernel modules geneve_core and geneve to single
geneve module. geneve_core module was targeted to share
Geneve encap and decap code between Geneve netdevice and
OVS Geneve tunnel implementation, Since OVS no longer
needs these API, Geneve code can be consolidated into
single geneve module.

v3-v4:
- Drop NETIF_F_NETNS_LOCAL feature.
- Fix geneve device newlink check

v2-v3:
- make tunnel medata device and regular device mutually exclusive.
- Fix Kconfig dependency for Geneve.
- Fix dst-port netlink encoding.
- drop changelink patch.

v1-v2:
- Replaced per hash table tunnel pointer (metadata enabled) with flag.
- Added support for changelink.
- Improve geneve device route lookup with more parameters.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 15:42:48 -07:00
Pravin B Shelar
66d47003f7 geneve: Move device hash table to geneve socket.
This change simplifies Geneve Tunnel hash table management.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Reviewed-by: Jesse Gross <jesse@nicira.com>
Reviewed-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 15:42:48 -07:00
Pravin B Shelar
371bd1061d geneve: Consolidate Geneve functionality in single module.
geneve_core module handles send and receive functionality.
This way OVS could use the Geneve API. Now with use of
tunnel meatadata mode OVS can directly use Geneve netdevice.
So there is no need for separate module for Geneve. Following
patch consolidates Geneve protocol processing in single module.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Reviewed-by: Jesse Gross <jesse@nicira.com>
Acked-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 15:42:48 -07:00
Pravin B Shelar
6b001e682e openvswitch: Use Geneve device.
With help of tunnel metadata mode OVS can directly use
Geneve devices to implement Geneve tunnels.
This patch removes all of the OVS specific Geneve code
and make OVS use a Geneve net_device. Basic geneve vport
is still there to handle compatibility with current
userspace application.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Reviewed-by: Jesse Gross <jesse@nicira.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 15:42:47 -07:00
Pravin B Shelar
e305ac6cf5 geneve: Add support to collect tunnel metadata.
Following patch create new tunnel flag which enable
tunnel metadata collection on given device. These devices
can be used by tunnel metadata based routing or by OVS.
Geneve Consolidation patch get rid of collect_md_tun to
simplify tunnel lookup further.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Reviewed-by: Jesse Gross <jesse@nicira.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 15:42:47 -07:00
Pravin B Shelar
cd7918b35f geneve: Make dst-port configurable.
Add netlink interface to configure Geneve UDP port number.
So that user can configure it for a Gevene device.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Reviewed-by: Jesse Gross <jesse@nicira.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Acked-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 15:42:47 -07:00
Pravin B Shelar
c29a70d2ca tunnel: introduce udp_tun_rx_dst()
Introduce function udp_tun_rx_dst() to initialize tunnel dst on
receive path.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Reviewed-by: Jesse Gross <jesse@nicira.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 15:42:47 -07:00
Pravin B Shelar
980c394c53 geneve: Use skb mark and protocol to lookup route.
On packet transmit path geneve need to lookup route. Following
patch improves route lookup using more parameters.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Reviewed-by: Jesse Gross <jesse@nicira.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Acked-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 15:42:47 -07:00
Pravin B Shelar
87cd3dcaf4 geneve: Initialize ethernet address in device setup.
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Reviewed-by: Jesse Gross <jesse@nicira.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Acked-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 15:42:47 -07:00
Toshiaki Makita
d2d427b392 bridge: Add netlink support for vlan_protocol attribute
This enables bridge vlan_protocol to be configured through netlink.

When CONFIG_BRIDGE_VLAN_FILTERING is disabled, kernel behaves the
same way as this feature is not implemented.

Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 15:35:33 -07:00
Yuval Mintz
9c9a6524b5 bnx2x: Add new device ids under the Qlogic vendor
This adds support for 3 new PCI device combinations -
1077:16a1, 1077:16a4 and 1077:16ad.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 15:31:16 -07:00
Guenter Roeck
31cb5c9e69 smsc911x: Ignore error return from device_get_phy_mode()
Commit 62ee783bf1 ("smsc911x: Fix crash seen if neither ACPI nor OF is
configured or used") introduces an error check for the return value from
device_get_phy_mode() and bails out if there is an error. Unfortunately,
there are configurations where no phy is configured. Those configurations
now fail.

To fix the problem, accept error returns from device_get_phy_mode(),
and use the return value from device_property_read_u32() to determine
if there is a suitable firmware interface to read the configuration.

Fixes: 62ee783bf1 ("smsc911x: Fix crash seen if neither ACPI nor OF is configured or used")
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 14:24:46 -07:00
Guenter Roeck
4fa7508e9f device property: Return -ENXIO if there is no suitable FW interface
Return -ENXIO if device property array access functions don't find
a suitable firmware interface.

This lets drivers decide if they should use available platform data
instead.

Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 14:24:46 -07:00
Daniel Borkmann
3b3ae88026 net: sched: consolidate tc_classify{,_compat}
For classifiers getting invoked via tc_classify(), we always need an
extra function call into tc_classify_compat(), as both are being
exported as symbols and tc_classify() itself doesn't do much except
handling of reclassifications when tp->classify() returned with
TC_ACT_RECLASSIFY.

CBQ and ATM are the only qdiscs that directly call into tc_classify_compat(),
all others use tc_classify(). When tc actions are being configured
out in the kernel, tc_classify() effectively does nothing besides
delegating.

We could spare this layer and consolidate both functions. pktgen on
single CPU constantly pushing skbs directly into the netif_receive_skb()
path with a dummy classifier on ingress qdisc attached, improves
slightly from 22.3Mpps to 23.1Mpps.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 14:18:48 -07:00
David S. Miller
fe2188236a Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue
Jeff Kirsher says:

====================
Intel Wired LAN Driver Updates 2015-08-26

This series contains updates to i40e and i40evf only.

Anjali provides a fix for i40e where the part is not receiving multicast
or VLAN tagged packets when in promiscuous mode.  This can occur when a
software bridge is created on top of the device.  Fixed the legacy and MSI
interrupt mode in the driver, which was non-existent before since we
were assuming MSIX was the only mode that the driver ran in.  Fixed the
i40evf driver, where the wrong defines were getting used in the VF
driver.

Mitch fixes a sparse warning about comparing __le16 to u16 so use
le16_to_cpu() to resolve the warning.  Also fixed a dyslexic spelling
of invalid.

Shannon adds port.crc_errors to receive CRC error counter, since it
is a receive counter.

Catherine provides a fix to move the stopping of the service task and
flow director to i40e_shutdown() instead of i40e_suspend().

Greg fixes the ethtool offline diagnostic with netqueues, which just need
to be treated the same as virtual functions when someone wants to run the
ethtool offline diagnostic test.  Also fixed up code comments for the
i40e ethtool diagnostic test function.  Cleans up redundant and unneeded
messages, since the kernel notifies all VXLAN capable registered drivers,
so no need to log this.

Neerav adds the ability to update statistics per VEB per traffic class
and dump it via ethtool.

Jingjing adds support for virtual channel offload to support receive
polling mode in the VF driver.

v2: dropped patch which added helper functions into a header, feedback from
    David Miller was to make the functions constant to reduce the driver
    footprint, so remove the patch while Anjali works on making the requested
    changes.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 14:06:09 -07:00
Joe Perches
0118e01935 smsc9194: Remove uncompilable #if 0'd use of pr_dbg
No pr_dbg method exists.

While this code is #if 0'd, it'd be nicer to
use the generic hex_dump, so use it instead.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 13:56:05 -07:00
David S. Miller
763a32bd0f Merge branch 'xgene-tso'
Iyappan Subramanian says:

====================
drivers: net: xgene: Add TSO support

Adding TSO support for 10GbE

iperf Tx data rate without TSO: 3.42 Gbps
                      with TSO: 9.41 Gbps

v2: Address review comments from v1
    - skb_linearize() if headers doesn't fit in 3 hardware buffers

v1:
* Initial version
====================

Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
2015-08-27 13:51:38 -07:00
Iyappan Subramanian
9b00eb494d drivers: net: xgene: Adding support for TSO
Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 13:51:38 -07:00
Iyappan Subramanian
949c40bb16 drivers: net: xgene: Preparatory patch for TSO support
- Rearranged descriptor writes
- Moved increment command write to xgene_enet_setup_tx_desc

Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 13:51:38 -07:00
David S. Miller
21c721fd0b Merge branch 'ovs-conntrack'
Joe Stringer says:

====================
OVS conntrack support

The goal of this series is to allow OVS to send packets through the Linux
kernel connection tracker, and subsequently match on fields populated by
conntrack. This functionality is enabled through a new
CONFIG_OPENVSWITCH_CONNTRACK option.

This version addresses the feedback from v5, primarily checking the behaviour
is correct with different configurations such as disabling
CONFIG_OPENVSWITCH_CONNTRACK or disabling individual conntrack features like
connlabels.

The branch below has been updated with the corresponding userspace pieces:
https://github.com/joestringer/ovs dev/ct_20150818
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 11:40:44 -07:00
Joe Stringer
cae3a26275 openvswitch: Allow attaching helpers to ct action
Add support for using conntrack helpers to assist protocol detection.
The new OVS_CT_ATTR_HELPER attribute of the CT action specifies a helper
to be used for this connection. If no helper is specified, then helpers
will be automatically applied as per the sysctl configuration of
net.netfilter.nf_conntrack_helper.

The helper may be specified as part of the conntrack action, eg:
ct(helper=ftp). Initial packets for related connections should be
committed to allow later packets for the flow to be considered
established.

Example ovs-ofctl flows allowing FTP connections from ports 1->2:
in_port=1,tcp,action=ct(helper=ftp,commit),2
in_port=2,tcp,ct_state=-trk,action=ct(recirc)
in_port=2,tcp,ct_state=+trk-new+est,action=1
in_port=2,tcp,ct_state=+trk+rel,action=1

Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 11:40:43 -07:00
Joe Stringer
c2ac667358 openvswitch: Allow matching on conntrack label
Allow matching and setting the ct_label field. As with ct_mark, this is
populated by executing the CT action. The label field may be modified by
specifying a label and mask nested under the CT action. It is stored as
metadata attached to the connection. Label modification occurs after
lookup, and will only persist when the conntrack entry is committed by
providing the COMMIT flag to the CT action. Labels are currently fixed
to 128 bits in size.

Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 11:40:43 -07:00
Joe Stringer
86ca02e774 netfilter: connlabels: Export setting connlabel length
Add functions to change connlabel length into nf_conntrack_labels.c so
they may be reused by other modules like OVS and nftables without
needing to jump through xt_match_check() hoops.

Suggested-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Florian Westphal <fw@strlen.de>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 11:40:43 -07:00
Joe Stringer
55e5713f2b netfilter: Always export nf_connlabels_replace()
The following patches will reuse this code from OVS.

Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 11:40:43 -07:00
Joe Stringer
182e3042e1 openvswitch: Allow matching on conntrack mark
Allow matching and setting the ct_mark field. As with ct_state and
ct_zone, these fields are populated when the CT action is executed. To
write to this field, a value and mask can be specified as a nested
attribute under the CT action. This data is stored with the conntrack
entry, and is executed after the lookup occurs for the CT action. The
conntrack entry itself must be committed using the COMMIT flag in the CT
action flags for this change to persist.

Signed-off-by: Justin Pettit <jpettit@nicira.com>
Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 11:40:43 -07:00
Joe Stringer
7f8a436eaa openvswitch: Add conntrack action
Expose the kernel connection tracker via OVS. Userspace components can
make use of the CT action to populate the connection state (ct_state)
field for a flow. This state can be subsequently matched.

Exposed connection states are OVS_CS_F_*:
- NEW (0x01) - Beginning of a new connection.
- ESTABLISHED (0x02) - Part of an existing connection.
- RELATED (0x04) - Related to an established connection.
- INVALID (0x20) - Could not track the connection for this packet.
- REPLY_DIR (0x40) - This packet is in the reply direction for the flow.
- TRACKED (0x80) - This packet has been sent through conntrack.

When the CT action is executed by itself, it will send the packet
through the connection tracker and populate the ct_state field with one
or more of the connection state flags above. The CT action will always
set the TRACKED bit.

When the COMMIT flag is passed to the conntrack action, this specifies
that information about the connection should be stored. This allows
subsequent packets for the same (or related) connections to be
correlated with this connection. Sending subsequent packets for the
connection through conntrack allows the connection tracker to consider
the packets as ESTABLISHED, RELATED, and/or REPLY_DIR.

The CT action may optionally take a zone to track the flow within. This
allows connections with the same 5-tuple to be kept logically separate
from connections in other zones. If the zone is specified, then the
"ct_zone" match field will be subsequently populated with the zone id.

IP fragments are handled by transparently assembling them as part of the
CT action. The maximum received unit (MRU) size is tracked so that
refragmentation can occur during output.

IP frag handling contributed by Andy Zhou.

Based on original design by Justin Pettit.

Signed-off-by: Joe Stringer <joestringer@nicira.com>
Signed-off-by: Justin Pettit <jpettit@nicira.com>
Signed-off-by: Andy Zhou <azhou@nicira.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 11:40:43 -07:00
Joe Stringer
e79e259588 dst: Add __skb_dst_copy() variation
This variation on skb_dst_copy() doesn't require two skbs.

Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 11:40:42 -07:00
Joe Stringer
5b49004724 ipv6: Export nf_ct_frag6_gather()
Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 11:40:42 -07:00
Joe Stringer
be26b9a88f openvswitch: Move MASKED* macros to datapath.h
This will allow the ovs-conntrack code to reuse these macros.

Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 11:40:42 -07:00
Joe Stringer
8e2fed1c0c openvswitch: Serialize acts with original netlink len
Previously, we used the kernel-internal netlink actions length to
calculate the size of messages to serialize back to userspace.
However,the sw_flow_actions may not be formatted exactly the same as the
actions on the wire, so store the original actions length when
de-serializing and re-use the original length when serializing.

Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 11:40:42 -07:00