linux-toradex.git/net/core/netprio_cgroup.c, branch v3.9.3

net: core: Remove unnecessary alloc/OOM messages

2013-02-06T19:58:52+00:00

alloc failures already get standardized OOM
messages and a dump_stack.

Signed-off-by: Joe Perches 
Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

2012-12-13T02:07:07+00:00

Pull networking changes from David Miller:

1) Allow to dump, monitor, and change the bridge multicast database
   using netlink.  From Cong Wang.

2) RFC 5961 TCP blind data injection attack mitigation, from Eric
   Dumazet.

3) Networking user namespace support from Eric W. Biederman.

4) tuntap/virtio-net multiqueue support by Jason Wang.

5) Support for checksum offload of encapsulated packets (basically,
   tunneled traffic can still be checksummed by HW).  From Joseph
   Gasparakis.

6) Allow BPF filter access to VLAN tags, from Eric Dumazet and
   Daniel Borkmann.

7) Bridge port parameters over netlink and BPDU blocking support
   from Stephen Hemminger.

8) Improve data access patterns during inet socket demux by rearranging
   socket layout, from Eric Dumazet.

9) TIPC protocol updates and cleanups from Ying Xue, Paul Gortmaker, and
   Jon Maloy.

10) Update TCP socket hash sizing to be more in line with current day
    realities.  The existing heurstics were choosen a decade ago.
    From Eric Dumazet.

11) Fix races, queue bloat, and excessive wakeups in ATM and
    associated drivers, from Krzysztof Mazur and David Woodhouse.

12) Support DOVE (Distributed Overlay Virtual Ethernet) extensions
    in VXLAN driver, from David Stevens.

13) Add "oops_only" mode to netconsole, from Amerigo Wang.

14) Support set and query of VEB/VEPA bridge mode via PF_BRIDGE, also
    allow DCB netlink to work on namespaces other than the initial
    namespace.  From John Fastabend.

15) Support PTP in the Tigon3 driver, from Matt Carlson.

16) tun/vhost zero copy fixes and improvements, plus turn it on
    by default, from Michael S. Tsirkin.

17) Support per-association statistics in SCTP, from Michele
    Baldessari.

And many, many, driver updates, cleanups, and improvements.  Too
numerous to mention individually.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1722 commits)
  net/mlx4_en: Add support for destination MAC in steering rules
  net/mlx4_en: Use generic etherdevice.h functions.
  net: ethtool: Add destination MAC address to flow steering API
  bridge: add support of adding and deleting mdb entries
  bridge: notify mdb changes via netlink
  ndisc: Unexport ndisc_{build,send}_skb().
  uapi: add missing netconf.h to export list
  pkt_sched: avoid requeues if possible
  solos-pci: fix double-free of TX skb in DMA mode
  bnx2: Fix accidental reversions.
  bna: Driver Version Updated to 3.1.2.1
  bna: Firmware update
  bna: Add RX State
  bna: Rx Page Based Allocation
  bna: TX Intr Coalescing Fix
  bna: Tx and Rx Optimizations
  bna: Code Cleanup and Enhancements
  ath9k: check pdata variable before dereferencing it
  ath5k: RX timestamp is reported at end of frame
  ath9k_htc: RX timestamp is reported at end of frame
  ...

netprio_cgroup: allow nesting and inherit config on cgroup creation

2012-11-22T15:32:47+00:00

Inherit netprio configuration from ->css_online(), allow nesting and
remove .broken_hierarchy marking.  This makes netprio_cgroup's
behavior match netcls_cgroup's.

Note that this patch changes userland-visible behavior.  Nesting is
allowed and the first level cgroups below the root cgroup behave
differently - they inherit priorities from the root cgroup on creation
instead of starting with 0.  This is unfortunate but not doing so is
much crazier.

Signed-off-by: Tejun Heo 
Tested-and-Acked-by: Daniel Wagner 
Acked-by: David S. Miller

netprio_cgroup: implement netprio[_set]_prio() helpers

2012-11-22T15:32:47+00:00

Introduce two helpers - netprio_prio() and netprio_set_prio() - which
hide the details of priomap access and expansion.  This will help
implementing hierarchy support.

Signed-off-by: Tejun Heo 
Acked-by: Neil Horman 
Tested-and-Acked-by: Daniel Wagner 
Acked-by: David S. Miller

netprio_cgroup: use cgroup->id instead of cgroup_netprio_state->prioidx

2012-11-22T15:32:47+00:00

With priomap expansion no longer depending on knowing max id
allocated, netprio_cgroup can use cgroup->id insted of cs->prioidx.
Drop prioidx alloc/free logic and convert all uses to cgroup->id.

* In cgrp_css_alloc(), parent->id test is moved above @cs allocation
  to simplify error path.

* In cgrp_css_free(), @cs assignment is made initialization.

Signed-off-by: Tejun Heo 
Acked-by: Neil Horman 
Tested-and-Acked-by: Daniel Wagner 
Acked-by: David S. Miller

netprio_cgroup: reimplement priomap expansion

2012-11-22T15:32:46+00:00

netprio kept track of the highest prioidx allocated and resized
priomaps accordingly when necessary.  This makes it necessary to keep
track of prioidx allocation and may end up resizing on every new
prioidx.

Update extend_netdev_table() such that it takes @target_idx which the
priomap should be able to accomodate.  If the priomap is large enough,
nothing happens; otherwise, the size is doubled until @target_idx can
be accomodated.

This makes max_prioidx and write_update_netdev_table() unnecessary.
write_priomap() now calls extend_netdev_table() directly.

Signed-off-by: Tejun Heo 
Acked-by: Neil Horman 
Tested-and-Acked-by: Daniel Wagner 
Acked-by: David S. Miller

netprio_cgroup: shorten variable names in extend_netdev_table()

2012-11-22T15:32:46+00:00

The function is about to go through a rewrite.  In preparation,
shorten the variable names so that we don't repeat "priomap" so often.

This patch is cosmetic.

Signed-off-by: Tejun Heo 
Acked-by: Neil Horman 
Tested-and-Acked-by: Daniel Wagner 
Acked-by: David S. Miller

netprio_cgroup: simplify write_priomap()

2012-11-22T15:32:46+00:00

sscanf() doesn't bite.

Signed-off-by: Tejun Heo 
Acked-by: Neil Horman 
Tested-and-Acked-by: Daniel Wagner 
Acked-by: David S. Miller

cgroup: rename ->create/post_create/pre_destroy/destroy() to ->css_alloc/online/offline/free()

2012-11-19T16:13:38+00:00

Rename cgroup_subsys css lifetime related callbacks to better describe
what their roles are.  Also, update documentation.

Signed-off-by: Tejun Heo 
Acked-by: Li Zefan

cgroup: net_prio: Mark local used function static

2012-10-26T07:40:50+00:00

net_prio_attach() is only access via cgroup_subsys callbacks,
therefore we can reduce the visibility of this function.

Signed-off-by: Daniel Wagner 
Cc: "David S. Miller" 
Cc: John Fastabend 
Cc: Li Zefan 
Cc: Neil Horman 
Cc: Tejun Heo 
Cc: 
Cc: 
Acked-by: Neil Horman 
Signed-off-by: David S. Miller