Kaixu Xia [Thu, 6 Aug 2015 07:02:34 +0000 (07:02 +0000)]
bpf: Add new bpf map type to store the pointer to struct perf_event
Introduce a new bpf map type 'BPF_MAP_TYPE_PERF_EVENT_ARRAY'.
This map only stores the pointer to struct perf_event. The
user space event FDs from perf_event_open() syscall are converted
to the pointer to struct perf_event and stored in map.
Signed-off-by: Kaixu Xia <xiakaixu@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Wang Nan [Thu, 6 Aug 2015 07:02:33 +0000 (07:02 +0000)]
bpf: Make the bpf_prog_array_map more generic
All the map backends are of generic nature. In order to avoid
adding much special code into the eBPF core, rewrite part of
the bpf_prog_array map code and make it more generic. So the
new perf_event_array map type can reuse most of code with
bpf_prog_array map and add fewer lines of special code.
Signed-off-by: Wang Nan <wangnan0@huawei.com> Signed-off-by: Kaixu Xia <xiakaixu@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Kaixu Xia [Thu, 6 Aug 2015 07:02:32 +0000 (07:02 +0000)]
perf: add the necessary core perf APIs when accessing events counters in eBPF programs
This patch add three core perf APIs:
- perf_event_attrs(): export the struct perf_event_attr from struct
perf_event;
- perf_event_get(): get the struct perf_event from the given fd;
- perf_event_read_local(): read the events counters active on the
current CPU;
These APIs are needed when accessing events counters in eBPF programs.
The API perf_event_read_local() comes from Peter and I add the
corresponding SOB.
Signed-off-by: Kaixu Xia <xiakaixu@huawei.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 10 Aug 2015 05:48:10 +0000 (22:48 -0700)]
Merge branch 'mv88e6xxx-switchdev-fdb'
Vivien Didelot says:
====================
net: dsa: mv88e6xxx: support switchdev FDB objects
This patchset refactors the DSA and mv88e6xxx code to use the switchdev FDB
objects.
The first two patches add minor but necessary changes to switchdev, the third
one implements the switchdev glue in DSA for FDB routines, and the remaining
ones refactor the FDB access functions in the mv88e6xxx code.
Below is an usage example (ports 0-2 belongs to br0, ports 3-4 belongs to br1):
# bridge fdb add 3c:97:0e:11:30:6e dev swp2
# bridge fdb add 3c:97:0e:11:40:78 dev swp3
# bridge fdb add 3c:97:0e:11:50:86 dev swp4
# bridge fdb del 3c:97:0e:11:40:78 dev swp3
# bridge fdb
01:00:5e:00:00:01 dev eth0 self permanent
01:00:5e:00:00:01 dev eth1 self permanent
00:50:d2:10:78:15 dev swp0 master br0 permanent
3c:97:0e:11:30:6e dev swp2 self static
00:50:d2:10:78:15 dev swp3 master br1 permanent
3c:97:0e:11:50:86 dev swp4 self static
# cat /sys/kernel/debug/dsa0/atu
# DB T/P Vec State Addr
# 001 Port 004 e 3c:97:0e:11:30:6e
# 004 Port 010 e 3c:97:0e:11:50:86
For the 88E6xxx switches, FIDs 1 to num_ports will be reserved for non-bridged
ports and bridge groups, and the remaining will be later used by VLANs.
This change is necessary to welcome the support for hardware VLANs (which will
follow soon).
Changes in v2:
- remove ndo_bridge_{get,set,del}link from switchdev/DSA glue code
- use ether_addr_copy instead of memcpy for MAC addresses
- constify MAC address in port_fdb_{add,del}
- split the mv88e6xxx code refactoring into several patches
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Vivien Didelot [Thu, 6 Aug 2015 05:44:07 +0000 (01:44 -0400)]
net: dsa: mv88e6xxx: rework FDB getnext operation
This commit adds a low level _mv88e6xxx_atu_getnext function and helpers
to rewrite the mv88e6xxx_port_fdb_getnext operation.
A mv88e6xxx_atu_entry structure is added for convenient access to the
hardware, and GLOBAL_ATU_FID is defined instead of the raw 0x01 value.
The previous implementation did not handle the eventual trunk mapping.
If the related bit is set, then the ATU data register would contain the
trunk ID, and not the port vector.
Check this in the FDB getnext operation and do not handle it (yet).
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Vivien Didelot [Thu, 6 Aug 2015 05:44:06 +0000 (01:44 -0400)]
net: dsa: mv88e6xxx: rename ATU MAC accessors
Rename the __mv88e6xxx_{read,write}_addr functions to more explicit
_mv88e6xxx_atu_mac_{read,write} functions, which also respect the single
underscore convention used in the file (meaning SMI lock must be held).
In the meantime, define their MAC address parameters as an array of
ETH_ALEN bytes instead of a char pointer.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Vivien Didelot [Thu, 6 Aug 2015 05:44:05 +0000 (01:44 -0400)]
net: dsa: mv88e6xxx: extend fid mask
The driver currently manages one FID per port (or bridge group), with a
mask of DSA_MAX_PORTS bits, where 0 means that the FID is in use.
The Marvell 88E6xxx switches support up to 4094 FIDs (from 1 to 0xfff;
FID 0 means that multiple address databases are not being used).
This patch changes the fid_mask for an fid_bitmap of 4096 bits.
>From now on, FIDs 1 to num_ports are reserved for non-bridged ports and
bridge groups (a bridge group gets the FID of its first member). The
remaining bits will be reserved for VLAN entries.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Vivien Didelot [Thu, 6 Aug 2015 05:44:02 +0000 (01:44 -0400)]
net: switchdev: change fdb addr for a byte array
The address in the switchdev_obj_fdb structure is currently represented
as a pointer. Replacing it for a 6-byte array allows switchdev to carry
addresses directly read from hardware registers, not stored by the
switch chip driver (as in Rocker).
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Tom Herbert [Wed, 5 Aug 2015 16:39:27 +0000 (09:39 -0700)]
net: Fix race condition in store_rps_map
There is a race condition in store_rps_map that allows jump label
count in rps_needed to go below zero. This can happen when
concurrently attempting to set and a clear map.
Scenario:
1. rps_needed count is zero
2. New map is assigned by setting thread, but rps_needed count _not_ yet
incremented (rps_needed count still zero)
2. Map is cleared by second thread, old_map set to that just assigned
3. Second thread performs static_key_slow_dec, rps_needed count now goes
negative
Fix is to increment or decrement rps_needed under the spinlock.
Signed-off-by: Tom Herbert <tom@herbertland.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Wenyu Zhang [Wed, 5 Aug 2015 07:30:47 +0000 (00:30 -0700)]
openvswitch: Make 100 percents packets sampled when sampling rate is 1.
When sampling rate is 1, the sampling probability is UINT32_MAX. The packet
should be sampled even the prandom32() generate the number of UINT32_MAX.
And none packet need be sampled when the probability is 0.
Signed-off-by: Wenyu Zhang <wenyuz@vmware.com> Acked-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
vxlan: combine VXLAN_FLOWBASED into VXLAN_COLLECT_METADATA
IFLA_VXLAN_FLOWBASED is useless without IFLA_VXLAN_COLLECT_METADATA,
so combine them into single IFLA_VXLAN_COLLECT_METADATA flag.
'flowbased' doesn't convey real meaning of the vxlan tunnel mode.
This mode can be used by routing, tc+bpf and ovs.
Only ovs is strictly flow based, so 'collect metadata' is a better
name for this tunnel mode.
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com> Acked-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 7 Aug 2015 18:29:58 +0000 (11:29 -0700)]
Merge branch 'rds-tcp-netns'
Sowmini Varadhan says:
====================
RDS-TCP: Network namespace support
This patch series contains the set of changes to correctly set up
the infra for PF_RDS sockets that use TCP as the transport in multiple
network namespaces.
Patch 1 in the series is the minimal set of changes to allow
a single instance of RDS-TCP to run in any (i.e init_net or other) net
namespace. The changes in this patch set ensure that the execution of
'modprobe [-r] rds_tcp' sets up the kernel TCP sockets
relative to the current netns, so that RDS applications can send/recv
packets from that netns, and the netns can later be deleted cleanly.
Patch 2 of the series further allows multiple RDS-TCP instances,
one per network namespace. The changes in this patch allows dynamic
creation/tear-down of RDS-TCP client and server sockets across all
current and future namespaces.
v2 changes from RFC sent out earlier:
David Ahern comments in patch 1, net_device notifier in patch 2,
patch 3 broken off and submitted separately.
v3: Cong Wang review comments.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
RDS-TCP: Support multiple RDS-TCP listen endpoints, one per netns.
Register pernet subsys init/stop functions that will set up
and tear down per-net RDS-TCP listen endpoints. Unregister
pernet subusys functions on 'modprobe -r' to clean up these
end points.
Enable keepalive on both accept and connect socket endpoints.
The keepalive timer expiration will ensure that client socket
endpoints will be removed as appropriate from the netns when
an interface is removed from a namespace.
Register a device notifier callback that will clean up all
sockets (and thus avoid the need to wait for keepalive timeout)
when the loopback device is unregistered from the netns indicating
that the netns is getting deleted.
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
RDS-TCP: Make RDS-TCP work correctly when it is set up in a netns other than init_net
Open the sockets calling sock_create_kern() with the correct struct net
pointer, and use that struct net pointer when verifying the
address passed to rds_bind().
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 7 Aug 2015 07:19:09 +0000 (00:19 -0700)]
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue
Jeff Kirsher says:
====================
Intel Wired LAN Driver Updates 2015-08-05
This series contains updates to i40e, i40evf and e1000e.
Anjali adds support for x772 devices to i40e and i40evf. With the added
support, x772 supports offloading of the outer UDP transmit and receive
checksum for tunneled packets. Also supports evicting ATR filters in the
hardware, so update the driver with this new feature set.
Raanan provides several fixes for e1000e, first rectifies the Energy
Efficient Ethernet in Sx code so that it only applies to parts that
actually support EEE in Sx. Fix whitespace and moved ICH8 related define
to the proper context. Fixed the ASPM locking which was reported by
Bjorn Helgaas. Fix a workaround implementation for systime which could
experience a large non-linear increment of the systime value when
checking for overflow.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The pr_debug family of functions turns into a no-op when -DDEBUG is not
specified, opting instead to call "no_printk", which gets compiled to a
no-op (but retains gcc's nice warnings about printf-style arguments).
The problem with net_dbg_ratelimited is that it is defined to be a
variant of net_ratelimited_function, which expands to essentially:
if (net_ratelimit())
pr_debug(fmt, ...);
When DEBUG is not defined, then this becomes,
if (net_ratelimit())
;
This seems benign, except it isn't. Firstly, there's the obvious
overhead of calling net_ratelimit needlessly, which does quite some book
keeping for the rate limiting. Given that the pr_debug and
net_dbg_ratelimited family of functions are sprinkled liberally through
performance critical code, with developers assuming they'll be compiled
out to a no-op most of the time, we certainly do not want this needless
book keeping. Secondly, and most visibly, even though no debug message
is printed when DEBUG is not defined, if there is a flood of
invocations, dmesg winds up peppered with messages such as
"net_ratelimit: 320 callbacks suppressed". This is because our
aforementioned net_ratelimit() function actually prints this text in
some circumstances. It's especially odd to see this when there isn't any
other accompanying debug message.
So, in sum, it doesn't make sense to have this function's current
behavior, and instead it should match what every other debug family of
functions in the kernel does with !DEBUG -- nothing.
This patch replaces calls to net_dbg_ratelimited when !DEBUG with
no_printk, keeping with the idiom of all the other debug print helpers.
Also, though not strictly neccessary, it guards the call with an if (0)
so that all evaluation of any arguments are sure to be compiled out.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Roopa Prabhu [Tue, 4 Aug 2015 13:36:24 +0000 (06:36 -0700)]
af_mpls: add null dev check in find_outdev
This patch adds null dev check for the 'cfg->rc_via_table ==
NEIGH_LINK_TABLE or dev_get_by_index() failed' case
Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
test_bpf: add tests checking that JIT/interpreter sets A and X to 0.
It is mandatory for the JIT or interpreter to reset the A and X
registers to 0 before running the filter. Check that it is the case on
various ALU and JMP instructions.
Signed-off-by: Nicolas Schichan <nschichan@freebox.fr> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
This exerces the LD_ABS and LD_IND instructions for various sizes and
alignments. This also checks that X when used as an offset to a
BPF_IND instruction first in a filter is correctly set to 0.
Signed-off-by: Nicolas Schichan <nschichan@freebox.fr> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
test_bpf: add module parameters to filter the tests to run.
When developping on the interpreter or a particular JIT, it can be
interesting to restrict the tests list to a specific test or a
particular range of tests.
This patch adds the following module parameters to the test_bpf module:
* test_name=<string>: only the specified named test will be run.
* test_id=<number>: only the test with the specified id will be run
(see the output of test_bpf without parameters to get the test id).
* test_range=<number>,<number>: only the tests within IDs in the
specified id range are run (see the output of test_bpf without
parameters to get the test ids).
Any invalid range, test id or test name will result in -EINVAL being
returned and no tests being run.
Signed-off-by: Nicolas Schichan <nschichan@freebox.fr> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
test_bpf: test LD_ABS and LD_IND instructions on fragmented skbs.
These new tests exercise various load sizes and offsets crossing the
head/fragment boundary.
Signed-off-by: Nicolas Schichan <nschichan@freebox.fr> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
This introduce a new test->aux flag (FLAG_SKB_FRAG) to tell the
populate_skb() function to add a fragment to the test skb containing
the data specified in test->frag_data).
Signed-off-by: Nicolas Schichan <nschichan@freebox.fr> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
test_bpf: avoid oopsing the kernel when generate_test_data() fails.
Signed-off-by: Nicolas Schichan <nschichan@freebox.fr> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
This patchset introduces two features to the ConnectX-4 driver: Patch 8/8
("Support physical port counters") exposes some hardware counters through
ethtool. Rest of the patches are preparation and usage of what we call
light-weight netdev open/close. Some flows that used to be in the ndo_open/stop
are moved to the PCI probe/remove flows - i.e. we will make the netdev
open/close operations more "light-weight".
The benefits of this change are:
1) Reduce the execution time of the stop/open operations.
2) Avoid saving SW shadows of resource configurations that must
persist through stop/open operations (e.g flow table steering
rules), and avoid deleting/applying them from/to the device upon
netdev stop/open.
3) Avoid synchronizing threads that access those resources with the
netdev stop/open threads.
Instead of create/destroy the resource during netdev open/stop, This patchset
changes the behavior such that upon netdev stop, traffic is redirected to a
"Drop RQ" (a RQ that silently drops, at the NIC HW level all incoming traffic).
After redirecting the traffic, RX/TX software resources could be destroyed.
During netdev open, the RX/TX rings are created and traffic is redirected to
the RX rings.
Patchset was applied and tested over commit ba7591d ("ebpf: add skb->hash to
offset map for usage in {cls, act}_bpf or filters")
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Gal Pressman [Tue, 4 Aug 2015 11:05:47 +0000 (14:05 +0300)]
net/mlx5_core: Support physical port counters
Added physical port counters in the following standard formats to
ethtool statistics:
- IEEE 802.3
- RFC2863
- RFC2819
Signed-off-by: Gal Pressman <galp@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Achiad Shochat [Tue, 4 Aug 2015 11:05:46 +0000 (14:05 +0300)]
net/mlx5e: Take advantage of the light-weight netdev open/stop
Now that TIRs, TISs and flow tables are kept alive while the netdev is
stopped (after executing ndo_stop()) we can do the following
improvements:
- Obsolete the active_vlans SW shadow.
- Do not delete/add flow table rules upon ndo_stop/open.
In addition to simplifying the flow, this change also fastens
the ndo_open/close operations.
- Obsolete synchronization of threads accessing the flow tables
with the netdev stop/open threads.
Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Achiad Shochat [Tue, 4 Aug 2015 11:05:45 +0000 (14:05 +0300)]
net/mlx5e: Disable async events before unregister_netdev()
It does not make sense to allow events while the netdev is
unregistered.
Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Achiad Shochat [Tue, 4 Aug 2015 11:05:44 +0000 (14:05 +0300)]
net/mlx5e: Rename/move functions following the ndo_stop flow change
Rename some functions that used to be invoked upon ndo_open/stop and
are now invoked upon create/destroy_netdev() in order to better hint
their place in the flow.
Change some functions location in the file so that functions involved
in ndo_open/stop flow will not be interleaved with other functions.
This is a cosmetic change, no logical change here.
Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Achiad Shochat [Tue, 4 Aug 2015 11:05:43 +0000 (14:05 +0300)]
net/mlx5e: Light-weight netdev open/stop
Create/destroy TIRs, TISs and flow tables upon PCI probe/remove rather
than upon the netdev ndo_open/stop.
Upon ndo_stop(), redirect all RX traffic to the (lately introduced)
"Drop RQ" and then close only the RX/TX rings, leaving the TIRs,
TISs and flow tables alive.
Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Achiad Shochat [Tue, 4 Aug 2015 11:05:42 +0000 (14:05 +0300)]
net/mlx5_core: Introduce access function to modify RSS/LRO params
To be used by the mlx5 Eth driver in following commit.
This is in preparation for netdev "light-weight" open/stop flow
change described in previous commit.
Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Achiad Shochat [Tue, 4 Aug 2015 11:05:41 +0000 (14:05 +0300)]
net/mlx5e: Introduce the "Drop RQ"
RX traffic routed to this RQ will be silently dropped, at the NIC HW
level.
This is in preparation for netdev "light-weight" open/stop flow
change described in previous commit.
Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Achiad Shochat [Tue, 4 Aug 2015 11:05:40 +0000 (14:05 +0300)]
net/mlx5e: Unify the RX flow
Generally an RX packet flows through the following objects:
Flow table --> TIR --> RQT --> RQ
Where:
- TIR stands for "Transport Interface Receive", defining the RSS and
LRO paramaters.
- RQT stands for "RQ Table", implementing the RSS indirection table.
- RQ stands for "Receive Queue"
For flows that do not need LRO, nor RSS, the driver made a shortcut to
the above RX flow by pointing to the RQ directly from the TIR, yielding
this flow:
Flow table --> TIR --> RQ
In this commit we remove this shortcut by "inserting" a single-RQ RQT
between the TIR and the RQ, i.e RX packets will reach the same RQ but
will go through an RQT of size 1, pointing to just a single RQ.
This way the RX traffic re-direction to/from the "Drop RQ" will be more
uniform (AKA "one flow"), as it will involve only RQTs re-direction and
no TIRs re-direction.
Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 7 Aug 2015 04:59:27 +0000 (21:59 -0700)]
Merge branch 'cpsw-next'
Mugunthan V N says:
====================
CPSW interrupt handling cleanup and performance improvement
This patch series removes the irq controller disable interrupt and
adding a napi for tx event handling which improves the performance by
~180Mbps on dra7-evm
[ 5] local 192.168.10.116 port 5001 connected with 192.168.10.165 port 44176
[ 5] 0.0-60.0 sec 1.48 GBytes 210 Mbits/sec
[ 4] local 192.168.10.116 port 5001 connected with 192.168.10.165 port 33257
[ 4] 0.0-60.0 sec 2.71 GBytes 386 Mbits/sec
Changes from initial version:
* Added a patch to have napi only for first interface as there is
no use of having seperate napis for each interface as the
interrupt is shared by both interface and only one napi is
scheduled for each interrupt.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Mugunthan V N [Tue, 4 Aug 2015 10:36:20 +0000 (16:06 +0530)]
drivers: net: cpsw: add separate napi for tx
Instead of processing tx events in isr adding separate napi for
tx which improves performance by ~180Mbps with
omap2plus_defconfig on DRA74x platform. Also cleaning up rx napis
by renaming to napi_rx for better understanding the code.
Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Mugunthan V N [Tue, 4 Aug 2015 10:36:19 +0000 (16:06 +0530)]
drivers: net: cpsw: dual_emac: simplify napi usage
Since interrupt is shared between the two ethernet interface and
in isr only one napi is scheduled at an instance so having two
napis doesn't make any difference. So making napi also as a
common resource for the dual ethernet interfaces.
Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Mugunthan V N [Tue, 4 Aug 2015 10:36:18 +0000 (16:06 +0530)]
drivers: net: cpsw: remove disable_irq/enable_irq as irq can be masked from cpsw itself
CPSW interrupts can be disabled by masking CPSW interrupts and
clearing interrupt by writing appropriate EOI. So removing all
disable_irq/enable_irq as discussed in [1]
[1] http://patchwork.ozlabs.org/patch/492741/
Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Dan Carpenter [Tue, 4 Aug 2015 07:44:22 +0000 (10:44 +0300)]
mpls: small cleanup in inet/inet6_fib_lookup_dev()
We recently changed this code from returning NULL to returning ERR_PTR.
There are some left over NULL assignments which we can remove. We can
preserve the error code from ip_route_output() instead of always
returning -ENODEV. Also these functions use a mix of gotos and direct
returns. There is no cleanup necessary so I changed the gotos to
direct returns.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com> Acked-by: Robert Shearman <rshearma@brocade.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 7 Aug 2015 04:54:13 +0000 (21:54 -0700)]
Merge branch 'bnx2x-cnic-bnx2fc-bd-support'
Yuval Mintz says:
====================
bnx2x, cnic, bnx2fc: add support for BD
Commit 230d00eb4bfe ("bnx2x: new Multi-function mode - BD") added support
for a new multi-function mode, but it added only the support required by
bnx2x for L2 interfaces.
This adds the required changes to support the new multi-function mode in
the offloaded storage protocols.
Dave,
Please consider applying this series to `net-next'.
Do notice that this involves non-networking driver changes -
but sending this as a single series seemed like the best approach as
we had to have bnx2x changes to support the new functionality.
If this is problematic, please tell us what's the preferred solution here.
Changes from previous versions
------------------------------
- From v1 - no actual changes; v1 failed to reach netdev so in order to
keep things in line I've termed this one v2.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Joe Carnuccio [Tue, 4 Aug 2015 06:37:30 +0000 (09:37 +0300)]
bnx2fc: Read npiv table from nvram and create vports.
Signed-off-by: Joe Carnuccio <joe.carnuccio@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Yuval Mintz [Tue, 4 Aug 2015 06:37:29 +0000 (09:37 +0300)]
bnx2x: Add BD support for storage
Commit 230d00eb4bfe ("bnx2x: new Multi-function mode - BD") adds support
for the new mode in bnx2x. This expands this support by implementing
APIs required by our storage drivers to support that mode.
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Adheer Chandravanshi <adheer.chandravanshi@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Tej Parkash [Tue, 4 Aug 2015 06:37:27 +0000 (09:37 +0300)]
cnic: Populate upper layer driver state in MFW
Signed-off-by: Tej Parkash <tej.parkash@qlogic.com> Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
e1000e: Fix tight loop implementation of systime read algorithm
Change the algorithm. Read systimel twice and check for overflow.
If there was no overflow, use the first value.
If there was an overflow, read systimeh again and use the second
systimel value.
Signed-off-by: Raanan Avargil <raanan.avargil@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This patch implements the EEE in Sx code so that it only applies to parts
that support EEE in Sx (as opposed to all parts that support EEE).
It also uses the existing eee_advert and eee_lp_abiliity to set just the
bits (100/1000) that should be set.
Signed-off-by: Raanan Avargil <raanan.avargil@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Shannon Nelson [Fri, 5 Jun 2015 16:20:34 +0000 (12:20 -0400)]
i40e: Add AQ commands for NVM Update for X722
X722 does NVM update via the adminq queue, so we need to add support for
that.
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com> Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
X722 supports IWARP, this patch handles checking for PE critical errors.
Since the driver doesn't support the IWARP interface for now, this patch
just does bare minimum to log a message oif a PE critical error
happens.
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com> Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
i40e/i40evf: Add support for writeback on ITR feature for X722
X722 fixes an issue from X710 where TX descriptor WB would not happen if
the interrupts were disabled. In order for the write backs to happen a
bit needs to be set in the dynamic interrupt control register called
WB_ON_ITR. With this feature, the SW driver need not arm SW interrupts to
work around the issue in X710.
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com> Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
X722 uses the admin queue to configure RSS. This patch adds the necessary
flow changes to configure RSS through AQ. It also adds the separate VMDQ2
lookup tables and hash key programming for X722.
X722 also exposes a different set of PCTYPES for RSS, this patch
accommodates those changes.
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com> Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com> Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
====================
Netfilter updates for net-next
The following patchset contains Netfilter updates for net-next, they are:
1) A couple of cleanups for the netfilter core hook from Eric Biederman.
2) Net namespace hook registration, also from Eric. This adds a dependency with
the rtnl_lock. This should be fine by now but we have to keep an eye on this
because if we ever get the per-subsys nfnl_lock before rtnl we have may
problems in the future. But we have room to remove this in the future by
propagating the complexity to the clients, by registering hooks for the init
netns functions.
3) Update nf_tables to use the new net namespace hook infrastructure, also from
Eric.
4) Three patches to refine and to address problems from the new net namespace
hook infrastructure.
5) Switch to alternate jumpstack in xtables iff the packet is reentering. This
only applies to a very special case, the TEE target, but Eric Dumazet
reports that this is slowing down things for everyone else. So let's only
switch to the alternate jumpstack if the tee target is in used through a
static key. This batch also comes with offline precalculation of the
jumpstack based on the callchain depth. From Florian Westphal.
6) Minimal SCTP multihoming support for our conntrack helper, from Michal
Kubecek.
7) Reduce nf_bridge_info per skbuff scratchpad area to 32 bytes, from Florian
Westphal.
8) Fix several checkpatch errors in bridge netfilter, from Bernhard Thaler.
9) Get rid of useless debug message in ip6t_REJECT, from Subash Abhinov.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 4 Aug 2015 08:24:35 +0000 (01:24 -0700)]
Merge branch 'cxgb4-next'
Hariprasad Shenai says:
====================
add meminfo, bist status and misc. fixes
This patch series adds the following.
Add support to dump memory address range of various hw modules
Add support to dump edc bist status during ecc error
Read correct bits of who am i register for T6 adapter
and update T6 register range
This patch series has been created against net-next tree and includes
patches on cxgb4 and cxgb4vf driver.
We have included all the maintainers of respective drivers. Kindly review
the change and let us know in case of any review comments.
V2: PATCH 3/4 ("cxgb4/cxgb4vf: read the correct bits of PL Who Am I
register") Fix switch statement in get_chip_type() and some more style
fixes based on review comment by Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Robert Shearman [Mon, 3 Aug 2015 16:50:04 +0000 (17:50 +0100)]
mpls: Use definition for reserved label checks
In multiple locations there are checks for whether the label in hand
is a reserved label or not using the arbritray value of 16. Factor
this out into a #define for better maintainability and for
documentation.
Signed-off-by: Robert Shearman <rshearma@brocade.com> Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Locally-generated IPv4 packets, such as from applications running on
the host or traceroute/ping currently don't have lwtunnel output
redirected encap applied. However, they should do in the same way as
for forwarded packets and this patch series addresses that.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Robert Shearman [Mon, 3 Aug 2015 16:39:21 +0000 (17:39 +0100)]
ipv4: apply lwtunnel encap for locally-generated packets
lwtunnel encap is applied for forwarded packets, but not for
locally-generated packets. This is because the output function is not
overridden in __mkroute_output, unlike it is in __mkroute_input.
The lwtunnel state is correctly set on the rth through the call to
rt_set_nexthop, so all that needs to be done is to override the dst
output function to be lwtunnel_output if there is lwtunnel state
present and it requires output redirection.
Signed-off-by: Robert Shearman <rshearma@brocade.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Robert Shearman [Mon, 3 Aug 2015 16:39:20 +0000 (17:39 +0100)]
lwtunnel: set skb protocol and dev
In the locally-generated packet path skb->protocol may not be set and
this is required for the lwtunnel encap in order to get the lwtstate.
This would otherwise have been set by ip_output or ip6_output so set
skb->protocol prior to calling the lwtunnel encap
function. Additionally set skb->dev in case it is needed further down
the transmit path.
Signed-off-by: Robert Shearman <rshearma@brocade.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Mon, 3 Aug 2015 14:21:57 +0000 (16:21 +0200)]
act_bpf: properly support late binding of bpf action to a classifier
Since the introduction of the BPF action in d23b8ad8ab23 ("tc: add BPF
based action"), late binding was not working as expected. I.e. setting
the action part for a classifier only via 'bpf index <num>', where <num>
is the index of an existing action, is being rejected by the kernel due
to other missing parameters.
It doesn't make sense to require these parameters such as BPF opcodes
etc, as they are not going to be used anyway: in this case, they're just
allocated/parsed and then freed again w/o doing anything meaningful.
Instead, parse and verify the remaining parameters *after* the test on
tcf_hash_check(), when we really know that we're dealing with creation
of a new action or replacement of an existing one and where late binding
is thus irrelevant.
After patch, test case is now working:
FOO="1,6 0 0 4294967295,"
tc actions add action bpf bytecode "$FOO"
tc filter add dev foo parent 1: bpf bytecode "$FOO" flowid 1:1 action bpf index 1
tc actions show action bpf
action order 0: bpf bytecode '1,6 0 0 4294967295' default-action pipe
index 1 ref 2 bind 1
tc filter show dev foo
filter protocol all pref 49152 bpf
filter protocol all pref 49152 bpf handle 0x1 flowid 1:1 bytecode '1,6 0 0 4294967295'
action order 1: bpf bytecode '1,6 0 0 4294967295' default-action pipe
index 1 ref 2 bind 1
Late binding of a BPF action can be useful for preloading maps (e.g. before
they hit traffic) in case of eBPF programs, or to share a single eBPF action
with multiple classifiers.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Vivien Didelot [Mon, 3 Aug 2015 13:17:44 +0000 (09:17 -0400)]
net: dsa: mv88e6xxx: call _mv88e6xxx_stats_wait with SMI lock held
At switch setup, _mv88e6xxx_stats_wait was called without holding the
SMI mutex. Fix this by requesting the lock for this call.
Also, return the _mv88e6xxx_stats_wait code, since it may fail.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Satish Ashok [Mon, 3 Aug 2015 11:29:16 +0000 (13:29 +0200)]
bridge: mdb: add/del entry on all vlans if vlan_filter is enabled and vid is 0
Before this patch when a vid was not specified, the entry was added with
vid 0 which is useless when vlan_filtering is enabled. This patch makes
the entry to be added on all configured vlans when vlan filtering is
enabled and respectively deleted from all, if the entry vid is 0.
This is also closer to the way fdb works with regard to vid 0 and vlan
filtering.
Example:
Setup:
$ bridge vlan add vid 256 dev eth4
$ bridge vlan add vid 1024 dev eth4
$ bridge vlan add vid 64 dev eth3
$ bridge vlan add vid 128 dev eth3
$ bridge vlan
port vlan ids
eth3 1 PVID Egress Untagged
64
128
Before:
$ bridge mdb add dev br0 port eth3 grp 239.0.0.1
$ bridge mdb
dev br0 port eth3 grp 239.0.0.1 temp
After:
$ bridge mdb add dev br0 port eth3 grp 239.0.0.1
$ bridge mdb
dev br0 port eth3 grp 239.0.0.1 temp vid 1
dev br0 port eth3 grp 239.0.0.1 temp vid 128
dev br0 port eth3 grp 239.0.0.1 temp vid 64
Signed-off-by: Satish Ashok <sashok@cumulusnetworks.com> Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 3 Aug 2015 21:24:50 +0000 (14:24 -0700)]
Merge branch 'stacked-vlan-TSO'
Toshiaki Makita says:
====================
Stacked vlan TSO for virtual devices
Basically virtual devices do not need to segment double tagged packets.
This patch set adds TSO feature for double tagged packets to several
virtual devices, which can be realized by simply setting
.ndo_features_check to passthru_features_check.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Fri, 31 Jul 2015 16:25:17 +0000 (18:25 +0200)]
virtio_net: add gro capability
Straightforward patch to add GRO processing to virtio_net.
napi_complete_done() usage allows more aggressive aggregation,
opted-in by setting /sys/class/net/xxx/gro_flush_timeout
Tested:
Setting /sys/class/net/xxx/gro_flush_timeout to 1000 nsec,
Rick Jones reported following results.
One VM of each on a pair of OpenStack compute nodes with E5-2650Lv3 CPUs
and Intel 82599ES-based NICs. So, two "before" and two "after" VMs.
The OpenStack compute nodes were running OpenStack Kilo, with VxLAN
encapsulation being used through OVS so no GRO coming-up the host
stack. The compute nodes themselves were running a 3.14-based kernel.
Single-stream netperf, CPU utilizations and thus service demands are
based on intra-guest reported CPU.
Throughput Mbit/s, bigger is better
Min Median Average Max
4.2.0-rc3+ 1364 1686 1678 1938
4.2.0-rc3+flush1k 1824 2269 2275 2647
Send Service Demand, smaller is better
Min Median Average Max
4.2.0-rc3+ 0.236 0.558 0.524 0.802
4.2.0-rc3+flush1k 0.176 0.503 0.471 0.738
Receive Service Demand, smaller is better.
Min Median Average Max
4.2.0-rc3+ 1.906 2.188 2.191 2.531
4.2.0-rc3+flush1k 0.448 0.529 0.533 0.692
Signed-off-by: Eric Dumazet <edumazet@google.com> Tested-by: Rick Jones <rick.jones2@hp.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Sun, 2 Aug 2015 18:56:38 +0000 (20:56 +0200)]
rocker: linearize skb in case frags would not fit into tx descriptor
Suggested-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Acked-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Schimmel [Sun, 2 Aug 2015 18:56:37 +0000 (20:56 +0200)]
rocker: enable support for scattered packets
rocker supports the transmission of scattered packets, so let the kernel
know about it by setting the NETIF_F_SG bit in the device's features.
Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Acked-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Fri, 31 Jul 2015 22:46:29 +0000 (00:46 +0200)]
ebpf: add skb->hash to offset map for usage in {cls, act}_bpf or filters
Add skb->hash to the __sk_buff offset map, so it can be accessed from
an eBPF program. We currently already do this for classic BPF filters,
but not yet on eBPF, it might be useful as a demuxer in combination with
helpers like bpf_clone_redirect(), toy example:
__section("cls-lb") int ingress_main(struct __sk_buff *skb)
{
unsigned int which = 3 + (skb->hash & 7);
/* bpf_skb_store_bytes(skb, ...); */
/* bpf_l{3,4}_csum_replace(skb, ...); */
bpf_clone_redirect(skb, which, 0);
return -1;
}
I was thinking whether to add skb_get_hash(), but then concluded the
raw skb->hash seems fine in this case: we can directly access the hash
w/o extra eBPF helper function call, it's filled out by many NICs on
ingress, and in case the entropy level would not be sufficient, people
can still implement their own specific sw fallback hash mix anyway.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Yuval Mintz [Sun, 2 Aug 2015 09:42:41 +0000 (12:42 +0300)]
bnx2x: Correct logic for pvid configuration.
Commit 05cc5a39ddb7 ("bnx2x: add vlan filtering offload") has introduced
an incorrect logic for checking whether pvid should be configured for
a vf, causing the hypervisor driver to send unneeded ramrods for all of
the vfs each time a pvid has changed.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com> Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
1) Must teardown SR-IOV before unregistering netdev in igb driver, from
Alex Williamson.
2) Fix ipv6 route unreachable crash in IPVS, from Alex Gartrell.
3) Default route selection in ipv4 should take the prefix length, table
ID, and TOS into account, from Julian Anastasov.
4) sch_plug must have a reset method in order to purge all buffered
packets when the qdisc is reset, likewise for sch_choke, from WANG
Cong.
5) Fix deadlock and races in slave_changelink/br_setport in bridging.
From Nikolay Aleksandrov.
6) mlx4 bug fixes (wrong index in port even propagation to VFs,
overzealous BUG_ON assertion, etc.) from Ido Shamay, Jack
Morgenstein, and Or Gerlitz.
7) Turn off klog message about SCTP userspace interface compat that
makes no sense at all, from Daniel Borkmann.
8) Fix unbounded restarts of inet frag eviction process, causing NMI
watchdog soft lockup messages, from Florian Westphal.
9) Suspend/resume fixes for r8152 from Hayes Wang.
10) Fix busy loop when MSG_WAITALL|MSG_PEEK is used in TCP recv, from
Sabrina Dubroca.
11) Fix performance regression when removing a lot of routes from the
ipv4 routing tables, from Alexander Duyck.
12) Fix device leak in AF_PACKET, from Lars Westerhoff.
13) AF_PACKET also has a header length comparison bug due to signedness,
from Alexander Drozdov.
14) Fix bug in EBPF tail call generation on x86, from Daniel Borkmann.
15) Memory leaks, TSO stats, watchdog timeout and other fixes to
thunderx driver from Sunil Goutham and Thanneeru Srinivasulu.
16) act_bpf can leak memory when replacing programs, from Daniel
Borkmann.
17) WOL packet fixes in gianfar driver, from Claudiu Manoil.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (79 commits)
stmmac: fix missing MODULE_LICENSE in stmmac_platform
gianfar: Enable device wakeup when appropriate
gianfar: Fix suspend/resume for wol magic packet
gianfar: Fix warning when CONFIG_PM off
act_pedit: check binding before calling tcf_hash_release()
net: sk_clone_lock() should only do get_net() if the parent is not a kernel socket
net: sched: fix refcount imbalance in actions
r8152: reset device when tx timeout
r8152: add pre_reset and post_reset
qlcnic: Fix corruption while copying
act_bpf: fix memory leaks when replacing bpf programs
net: thunderx: Fix for crash while BGX teardown
net: thunderx: Add PCI driver shutdown routine
net: thunderx: Fix crash when changing rss with mutliple traffic flows
net: thunderx: Set watchdog timeout value
net: thunderx: Wakeup TXQ only if CQE_TX are processed
net: thunderx: Suppress alloc_pages() failure warnings
net: thunderx: Fix TSO packet statistic
net: thunderx: Fix memory leak when changing queue count
net: thunderx: Fix RQ_DROP miscalculation
...
David S. Miller [Sat, 1 Aug 2015 00:07:12 +0000 (17:07 -0700)]
Merge branch 'ipv6-auto-flow-labels'
Tom Herbert says:
====================
ipv6: Turn on auto IPv6 flow labels by default
BSD (MacOS) has already turned on flow labels by default and this does
not seem to be causing any problems in the Internet. Let's go ahead
and turn them on by default. We'll continue to monitor for any devices
start choking on them.
Flow labels are important since they are the desired solution for
network devices to perform ECMP and RSS (RFC6437 and RFC6438).
Traditionally, devices perform a 5-tuple hash on packets that
includes port numbers. For the most part, these devices can only
compute 5-tuple hashes for TCP and UDP. This severely limits our ability
to get good network load balancing for other protocols (IPIP, GRE,ESP,
etc.), and hence we are limited in using other protocols. Unfortunately,
this method is accepted as the de facto standard to the extent that
there are several proposals to encapsulate protocols in UDP _just_ for
the purposes for getting ECMP to work. With hosts generating flow labels
and devices taking them as input into ECMP (several already do), we can
start to fix this fundamental problem.
This patch set:
- Changes IPV6_FLOWINFO sockopt to be opt-out of flow labels for
connections rather than opt-in
- Disable flow label state ranges sysctl by default
- Enable auto flow labels sysctl by default
v2:
- Added functions to create an skb->hash based on flowi4 and flowi6.
These are called in output path when creating a packet
- Call skb_get_hash_flowi6 in ip6_make_flowlabel
- Implement the auto_flowlabels sysctl as a mode for auto flowlabels.
There are four modes which correspond to flow labels being enabled
and whether socket option can be used to opt in or opt out of
using them
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Tom Herbert [Fri, 31 Jul 2015 23:52:13 +0000 (16:52 -0700)]
ipv6: Disable flowlabel state ranges by default
Per RFC6437 stateful flow labels (e.g. labels set by flow label manager)
cannot "disturb" nodes taking part in stateless flow labels. While the
ranges only reduce the flow label entropy by one bit, it is conceivable
that this might bias the algorithm on some routers causing a load
imbalance. For best results on the Internet we really need the full
20 bits.
Signed-off-by: Tom Herbert <tom@herbertland.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Tom Herbert [Fri, 31 Jul 2015 23:52:12 +0000 (16:52 -0700)]
ipv6: Implement different admin modes for automatic flow labels
Change the meaning of net.ipv6.auto_flowlabels to provide a mode for
automatic flow labels generation. There are four modes:
0: flow labels are disabled
1: flow labels are enabled, sockets can opt-out
2: flow labels are allowed, sockets can opt-in
3: flow labels are enabled and enforced, no opt-out for sockets
np->autoflowlabel is initialized according to the sysctl value.
Signed-off-by: Tom Herbert <tom@herbertland.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Tom Herbert [Fri, 31 Jul 2015 23:52:10 +0000 (16:52 -0700)]
net: Add functions to get skb->hash based on flow structures
Add skb_get_hash_flowi6 and skb_get_hash_flowi4 which derive an sk_buff
hash from flowi6 and flowi4 structures respectively. These functions
can be called when creating a packet in the output path where the new
sk_buff does not yet contain a fully formed packet that is parsable by
flow dissector.
Signed-off-by: Tom Herbert <tom@herbertland.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Sat, 1 Aug 2015 00:05:37 +0000 (17:05 -0700)]
Merge branch 'for-linus-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason:
"Filipe fixed up a hard to trigger ENOSPC regression from our merge
window pull, and we have a few other smaller fixes"
* 'for-linus-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
Btrfs: fix quick exhaustion of the system array in the superblock
btrfs: its btrfs_err() instead of btrfs_error()
btrfs: Avoid NULL pointer dereference of free_extent_buffer when read_tree_block() fail
btrfs: Fix lockdep warning of btrfs_run_delayed_iputs()
Linus Torvalds [Sat, 1 Aug 2015 00:00:25 +0000 (17:00 -0700)]
Merge tag 'sound-4.2-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"This became a relative big update as it includes the collected ASoC
fixes. There are a few fixes in ASoC core side, mostly for DAPM and
the new topology API. The rest are various ASoC driver-specific
fixes, as well as the usual HD-audio and USB-audio quirks"
* tag 'sound-4.2-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (29 commits)
ALSA: hda - Fix MacBook Pro 5,2 quirk
ALSA: hda - Fix race between PM ops and HDA init/probe
ALSA: usb-audio: add dB range mapping for some devices
ALSA: hda - Apply a fixup to Dell Vostro 5480
ALSA: hda - Add pin quirk for the headset mic jack detection on Dell laptop
ALSA: hda - Apply fixup for another Toshiba Satellite S50D
ALSA: fireworks: add support for AudioFire2 quirk
ALSA: hda - Fix the headset mic that will not work on Dell desktop machine
ALSA: hda - fix cs4210_spdif_automute()
ASoC: pcm1681: Fix setting de-emphasis sampling rate selection
ASoC: ssm4567: Keep TDM_BCLKS in ssm4567_set_dai_fmt
ASoC: sgtl5000: Fix up define for SGTL5000_SMALL_POP
ASoC: dapm: Don't add prefix to widget stream name
ASoC: rt5645: Check if codec is initialized in workqueue handler
ASoC: Intel: Get correct usage_count value to load firmware
ASoC: topology: Fix to add dapm mixer info
ASoC: zx: spdif: Fix devm_ioremap_resource return value check
ASoC: zx: i2s: Fix devm_ioremap_resource return value check
ASoC: mediatek: Use platform_of_node for machine drivers
ASoC: Free card DAPM context on snd_soc_instantiate_card() error path
...
David S. Miller [Fri, 31 Jul 2015 22:45:37 +0000 (15:45 -0700)]
Merge branch 'dsa-netconsole'
Florian Fainelli says:
====================
net: GENET, SYSTEMPORT and DSA netconsole
This patch series adds support for netconsole in the GENET, SYSTEMPORT and DSA
drivers.
A small refactoring to the DSA transmit path is required to avoid duplicating
the dsa_netpoll_send_skb() into each and every tagging protocol supported.
Testing on e.g: mv643xx_eth and/or e1000e would be much appreciated!
Changes in v2:
- properly disable/enable interrupts in GENET and SYSTEMPORT
- pass the reallocated SKB back to dsa_slave_xmit() in case a tag protocol had to
alter the original SKB
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
projects / linux-beck.git / log