For short packets zerocopy mode adds overhead
of managing heads which isn't necessary: we
could simly update used ring directly
same as with zerocopy disabled.

Things seem to run a bit faster if we detect
and bypass head management when zcopy isn't used.
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

When memory map changes, we need to flush outstanding
DMAs as they might in theory reference old memory addresses.
To do this simply stop initiating new DMAs
and wait for ubufs ref count to drop to 0.
Afterwards reset the count back to 1.
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

vring changes already do a flush internally where appropriate, so we do
not need a second flush.

It's currently not very expensive but a follow-up patch makes flush more
heavy-weight, so remove the extra flush here to avoid regressing
performance if call or kick fds are changed on data path.
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

We do not allow old-style function definition.  Always spell foo(void) if
a function does not take any parameters.
Signed-off-by: NCong Ding <dinggnu@gmail.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

net/core/neighbour.c:65:12: warning: 'zero' defined but not used [-Wunused-variable]
net/core/neighbour.c:66:12: warning: 'unres_qlen_max' defined but not used [-Wunused-variable]

These variables are only used when CONFIG_SYSCTL is defined,
so move them under #ifdef CONFIG_SYSCTL.
Reported-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NCong Wang <amwang@redhat.com>
Acked-by: NShan Wei <davidshan@tencent.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

V3: make it a flag
V2: make the toggle per-port

Fast leave allows bridge to immediately stops the multicast
traffic on the port receives IGMP Leave when IGMP snooping is enabled,
no timeouts are observed.

Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Stephen Hemminger <shemminger@vyatta.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: NCong Wang <amwang@redhat.com>

If the initiator and target try to close the connection at about the same
time, there is a race condition in the termination sequence for bnx2x.
Fix the problem by waiting for the remote termination to complete before
deleting the Connection ID.  This will prevent the firmware assert.

Update version to 2.5.15.
Signed-off-by: NEddie Wai <eddie.wai@broadcom.com>
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Without the reset, reloading the cnic driver can cause the iSCSI
Event Queue to be out of sync with the driver and cause intermittent
crash.
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Acked-by: NAriel Elior <ariele@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

ipv6_sock_mc_close() is called for ipv6 sockets at close time, and most
of them don't use multicast.

Add a test to avoid contention on a shared spinlock.

Same heuristic applies for ipv6_sock_ac_close(), to avoid contention
on a shared rwlock.
Signed-off-by: NEric Dumazet <edumazet@google.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NShan Wei <davidshan@tencent.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

unres_qlen_bytes and unres_qlen are int type.
But multiple relation(unres_qlen_bytes = unres_qlen * SKB_TRUESIZE(ETH_FRAME_LEN))
will cause type overflow when seting unres_qlen. e.g.

$ echo 1027506 > /proc/sys/net/ipv4/neigh/eth1/unres_qlen
$ cat /proc/sys/net/ipv4/neigh/eth1/unres_qlen
1182657265
$ cat /proc/sys/net/ipv4/neigh/eth1/unres_qlen_bytes
-2147479756

The gutted value is not that we setting。
But user/administrator don't know this is caused by int type overflow.

what's more, it is meaningless and even dangerous that unres_qlen_bytes is set
with negative number. Because, for unresolved neighbour address, kernel will cache packets
without limit in __neigh_event_send()(e.g. (u32)-1 = 2GB).
Signed-off-by: NShan Wei <davidshan@tencent.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Added functions for ack_interrupt and config_intr. Tested on an mpc5200b
powerpc board.
Signed-off-by: NStephan Gatzka <stephan.gatzka@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

- convert remaining htonl/ntohl +__raw_read/__raw_writel to
  swab32 + readl/writel
- add missing __iomem qualifier in myri10ge_open()
- fix  dubious: x & !y warning by switching from logical to bitwise not

The swab32 conversion fixes a bug in myri10ge_led() where
big-endian machines would write the wrong pattern.

The only remaining warning (lock context imbalance) is due to
the use of __netif_tx_trylock(), and cannot easily be fixed.
Signed-off-by: NAndrew Gallatin <gallatin@myri.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

V2: make the toggle per-port

Fast leave allows bridge to immediately stops the multicast
traffic on the port receives IGMP Leave when IGMP snooping is enabled,
no timeouts are observed.

Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Stephen Hemminger <shemminger@vyatta.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: NCong Wang <amwang@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The 3com driver for 3c59x requires ioport_map. Since not all
architectures support IO port mapping make 3c59x dependent on HAS_IOPORT.
Signed-off-by: NJan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Reported-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We talk about IPv6, hence the family is RTNL_FAMILY_IP6MR!
rtnl_register() is already called with RTNL_FAMILY_IP6MR.

The bug is here since the beginning of this function (commit 5b285cac).
Signed-off-by: NNicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When a new nic is created in namespace ns1, the kernel sends a KOBJ_ADD uevent
to ns1.  When the nic is moved to ns2, we only send a KOBJ_MOVE to ns2, and
nothing to ns1.

This patch changes that behavior so that when moving a nic from ns1 to ns2, we
send a KOBJ_REMOVED to ns1 and KOBJ_ADD to ns2.  (The KOBJ_MOVE is still
sent to ns2).

The effects of this can be seen when starting and stopping containers in
an upstart based host.  Lxc will create a pair of veth nics, the kernel
sends KOBJ_ADD, and upstart starts network-instance jobs for each.  When
one nic is moved to the container, because no KOBJ_REMOVED event is
received, the network-instance job for that veth never goes away.  This
was reported at https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1065589
With this patch the networ-instance jobs properly go away.

The other oddness solved here is that if a nic is passed into a running
upstart-based container, without this patch no network-instance job is
started in the container.  But when the container creates a new nic
itself (ip link add new type veth) then network-interface jobs are
created.  With this patch, behavior comes in line with a regular host.

v2: also send KOBJ_ADD to new netns.  There will then be a
_MOVE event from the device_rename() call, but that should
be innocuous.
Signed-off-by: NSerge Hallyn <serge.hallyn@canonical.com>
Acked-by: N"Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: NDaniel Lezcano <daniel.lezcano@free.fr>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Use for_each_pci_dev to simplify the code.
Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch allows to monitor mf6c activities via rtnetlink.
To avoid parsing two times the mf6c oifs, we use maxvif to allocate the rtnl
msg, thus we may allocate some superfluous space.
Signed-off-by: NNicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch allows to monitor mfc activities via rtnetlink.
To avoid parsing two times the mfc oifs, we use maxvif to allocate the rtnl
msg, thus we may allocate some superfluous space.
Signed-off-by: NNicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

/proc/net/ip[6]_mr_cache allows to get all mfc entries, even if they are put in
the unresolved list (mfc[6]_unres_queue). But only the table RT_TABLE_DEFAULT is
displayed.
This patch adds the parsing of the unresolved list when the dump is made via
rtnetlink, hence each table can be checked.

In IPv6, we set rtm_type in ip6mr_fill_mroute(), because in case of unresolved
mfc __ip6mr_fill_mroute() will not set it. In IPv4, it is already done.
Signed-off-by: NNicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

A mfc entry can be static or not (added via the mroute_sk socket). The patch
reports MFC_STATIC flag into rtm_protocol by setting rtm_protocol to
RTPROT_STATIC or RTPROT_MROUTED.
Signed-off-by: NNicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

These statistics can be checked only via /proc/net/ip_mr_cache or
SIOCGETSGCNT[_IN6] and thus only for the table RT_TABLE_DEFAULT.
Advertising them via rtnetlink allows to get statistics for all cache entries,
whatever the table is.
Signed-off-by: NNicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch removes the skb manipulations when nested attributes are added by
using standard helpers.
Signed-off-by: NNicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch advertise the MC_FORWARDING status for IPv4 and IPv6.
This field is readonly, only multicast engine in the kernel updates it.
Signed-off-by: NNicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Pablo Neira Ayuso says:

====================
* Remove limitation in the maximum number of supported sets in ipset.
  Now ipset automagically increments the number of slots in the array
  of sets by 64 new spare slots, from Jozsef Kadlecsik.

* Partially remove the generic queue infrastructure now that ip_queue
  is gone. Its only client is nfnetlink_queue now, from Florian
  Westphal.

* Add missing attribute policy checkings in ctnetlink, from Florian
  Westphal.

* Automagically kill conntrack entries that use the wrong output
  interface for the masquerading case in case of routing changes,
  from Jozsef Kadlecsik.

* Two patches two improve ct object traceability. Now ct objects are
  always placed in any of the existing lists. This allows us to dump
  the content of unconfirmed and dying conntracks via ctnetlink as
  a way to provide more instrumentation in case you suspect leaks,
  from myself.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add qlcnic prefix to qlcnic driver module parameters.
Signed-off-by: NSony Chacko <sony.chacko@qlogic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NSony Chacko <sony.chacko@qlogic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Refactor 82xx driver to support new adapter
Update routines to support variable number of NIC partitions
Signed-off-by: NRajesh Borundia <rajesh.borundia@qlogic.com>
Signed-off-by: NSony Chacko <sony.chacko@qlogic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Cleanup get board information API.
Signed-off-by: NSony Chacko <sony.chacko@qlogic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Refactor 82xx driver to support new adapter
Update PCI and hardware access routines
Signed-off-by: NAnirban Chakraborty <anirban.chakraborty@qlogic.com>
Signed-off-by: NSony Chacko <sony.chacko@qlogic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Move HW specific data to a seperate structure as part of
refactoring 82xx adapter driver.
Signed-off-by: NAnirban Chakraborty <anirban.chakraborty@qlogic.com>
Signed-off-by: NSony Chacko <sony.chacko@qlogic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add 82xx adapter ID check before 82xx specific operations as part of
refactoring the driver to enable support for new adapter.
Signed-off-by: NSony Chacko <sony.chacko@qlogic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch implements the hardware timestamping as described in
Documentation/networking/timestamping.txt

Update version to 3.128.
Signed-off-by: NNithin Nayak Sujir <nsujir@broadcom.com>
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch implements the SIOCSHWTSTAMP ioctl as described in
Documentation/networking/timestamping.txt

[Removed HWTSTAMP_FILTER_ALL handling by returning -ERANGE based on input
 from Richard Cochran.]
Signed-off-by: NNithin Nayak Sujir <nsujir@broadcom.com>
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch adds the ptp_caps structure, ptp api implementation,
reference clock read and register/unregister functions.  All the basic
clock operations as described in Documentation/ptp/ptp.txt are
supported.

Frequency adjustment is performed using hardware with a 24 bit
accumulator and a programmable correction value. On each clk, the
correction value gets added to the accumulator and when it overflows,
the time counter is incremented/decremented and the accumulator reset.

So conversion from ppb to correction value is
	ppb * (1 << 24) / 1000000000

[Re-organized to put the ptp_clock_info struct declaration in one patch,
 added ptp_clock_info.name, and added locking to tg3_ptp_adjtime() based
 on input from Richard Cochran.]
Signed-off-by: NNithin Nayak Sujir <nsujir@broadcom.com>
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch adds code to write the reference clock. If a chip reset is
performed, the hwclock is reinitialized with the adjusted kernel time
Signed-off-by: NNithin Nayak Sujir <nsujir@broadcom.com>
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Every caller holds tp->lock when calling tg3_netif_start() except
tg3_io_resume().  Fix it so that it is all consistent.  The subsequent
PTP patches add tg3_ptp_resume() to tg3_netif_start() and the tp->lock
is required.
Signed-off-by: NNithin Nayak Sujir <nsujir@broadcom.com>
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Acked-by: NRichard Cochran <richardcochran@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Networking:  Remove __dev* markings from the networking drivers

This is a series of patches that remove the dev* attributes for all
networking drivers, with the exception of wireless drivers, those are in
a different branch.

Use of __devinit, __devexit_p, __devinitdata, __devinitconst, and
__devexit are no longer needed since CONFIG_HOTPLUG is being removed as
an option.

Note, there are some devinit compiler section mismatch warnings due to
this series, but they are fixed up when merged with my driver-next
branch, which fixes the PCI device id warnings, and removes the modpost
detection, as it's no longer needed.
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>