At these points we have a fully filled in value via the IP
header the form of ip_hdr(skb)->saddr
Signed-off-by: David S. Miller <davem@davemloft.net>

udp_ioctl() really handles UDP and UDPLite protocols.

1) It can increment UDP_MIB_INERRORS in case first_packet_length() finds
a frame with bad checksum.

2) It has a dependency on sizeof(struct udphdr), not applicable to
ICMP/PING

If ping sockets need to handle SIOCINQ/SIOCOUTQ ioctl, this should be
done differently.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Vasiliy Kulikov <segoon@openwall.com>
Acked-by: Vasiliy Kulikov <segoon@openwall.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Signed-off-by: Shan Wei <shanwei@cn.fujitsu.com>
Reviewed-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Race condition caused debugfs_create_dir() to fail due to duplicate
name. Use atomic counter to create unique directory name.

net_ratelimit() is introduced to limit debug printouts.
Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Do proper handling of dev_queue_xmit errors in order to
avoid double free of skb and leaks in error conditions.
In cfctrl pending requests are removed when CAIF Link layer goes down.
Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Use struct net to reference CAIF configuration object instead of static variables.
Refactor functions caif_connect_client, caif_disconnect_client and squach
files cfcnfg.c and caif_config_utils.
Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

CAIF Socket Layer and ip-interface registers reference counters
in CAIF service layer. The functions sock_hold, sock_put and
dev_hold, dev_put are used by CAIF Stack to protect from freeing
memory while packets are in-flight.
Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Instead of having reference counts in caif service layers,
we hook into existing refcount handling in socket layer and netdevice.
Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Introduce Per-cpu reference for lower part of CAIF Stack.
Before freeing payload is disabled, synchronize_rcu() is called,
and then ref-count verified to be zero.
Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

RCU lists are used for handling the link layers instead of array.
When generating CAIF phy-id, ifindex is used as base. Legal range is 1-6.
Introduced set_phy_state() for managing CAIF Link layer state.
Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

RCU read_lock and refcount is used to protect in-flight packets.

Use RCU and counters to manage freeing lower part of the CAIF stack if
CAIF-link layer is removed. Old solution based on delaying removal of
device is removed.

When CAIF link layer goes down the use of CAIF link layer is disabled
(by calling caif_set_phy_state()), but removal and freeing of the
lower part of the CAIF stack is done when Link layer is unregistered.
Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Replace spin_lock with rcu_read_lock when accessing lists to layers
and cache. While packets are in flight rcu_read_lock should not be held,
instead ref-counters are used in combination with RCU.
Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

ping_table is not __read_mostly, since it contains one rwlock,
and is static to ping.c

ping_port_rover & ping_v4_lookup are static
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Vasiliy Kulikov <segoon@openwall.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

This patch adds support for a new adapter in the 82599 family.  Included
in that support is a new media_type ixgbe_media_type_fiber_lco.
Signed-of-by: Don Skidmore <donald.c.skidmore@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

error: bad constant expression
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Evan Swanson <evan.swanson@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

This patch cleans up two minor issues in ixgbe_down.  Specifically it
addresses the fact that the VFs should not be pinged until after interrupts
are disabled otherwise they might still get a response.  It also drops the
use of the txdctl temporary variable since the only bit we should be
writing to the TXDCTL registers during a shutdown is the flush bit.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

This change merges the over-temp task into the service task.  As a result
all tasklets are finally combined into once single tasklet for easier
management.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

This change merges the ATR table reinitialization into the service task.
This is yet another opportunity to avoid any race conditions as we don't
want to be attempting to reinitialize the table during a possible reset.

In addition this change adds a counter for table reinitialization so that
it can be tracked as part of the regular statistics.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Evan Swanson <evan.swanson@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

This change is meant to further help to reduce possible configuration
collisions between the various tasklets.  This change combines the device
reset with the service task.  As a result it is now not possible to be
updating the link on the device while also resetting the part.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Evan Swanson <evan.swanson@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

This patch is meant to merge the functionality of the ixgbe watchdog task
into the service task.  By doing this all link state functionality will be
controlled by a single task.  As a result the reliability of the interface
will be improved as the likelihood of any race conditions is further
reduced.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

This change is meant to address several race conditions with multi-speed
fiber SFP+ modules in 82599 adapters.  Specifically issues have been seen
in which both the SFP configuration and the multi-speed fiber configuration
are running simultaneously which will result in the device getting into an
erroneous link down state.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Evan Swanson <evan.swanson@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

This change moves flags and state into the same cacheline.  The reason for
this change is because both are frequently read around the same time and
infrequently written.  By combining them into the same cacheline this
should help to reduce memory utilization.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Evan Swanson <evan.swanson@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

The semaphore can be in locked state upon driver load, particularly
on 82598 if a machine is rebooted due to panic and the semaphore was
acquired just prior to the panic.

This patch unlocks the semaphore if it times out.
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

Add infrastructure in the PF driver to support macvlan in the VF driver.
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

Implement setup of unicast address list in the VF driver's set_rx_mode
netdev op.  Unicast addresses are sent to the PF via a mailbox message
and the PF will check if it has room in the RAR table and if so set the
filter for the VF.
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

The broadcast flood protection should be reset to its original value
if the primary interface could not be retrieved.
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Sven Eckelmann <sven@narfation.org>

add_bcast_packet_to_list increases the refcount for if_incoming but the
reference count is never decreased. The reference count must be
increased for all kinds of forwarded packets which have the primary
interface stored and forw_packet_free must decrease them. Also
purge_outstanding_packets has to invoke forw_packet_free when a work
item was really cancelled.

This regression was introduced in
32ae9b22.
Reported-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Sven Eckelmann <sven@narfation.org>

At this point iph->daddr equals what rt->rt_dst would hold.
Signed-off-by: David S. Miller <davem@davemloft.net>

Pass in the sk_buff so that we can fetch the necessary keys from
the packet header when working with input routes.
Signed-off-by: David S. Miller <davem@davemloft.net>

This will allow ip_options_build() to reliably look at the values of
iph->{daddr,saddr}
Signed-off-by: David S. Miller <davem@davemloft.net>

This code block executes when opt->srr_is_hit is set.  It will be
set only by ip_options_rcv_srr().

ip_options_rcv_srr() walks until it hits a matching nexthop in the SRR
option addresses, and when it matches one 1) looks up the route for
that nexthop and 2) on route lookup success it writes that nexthop
value into iph->daddr.

ip_forward_options() runs later, and again walks the SRR option
addresses looking for the option matching the destination of the route
stored in skb_rtable().  This route will be the same exact one looked
up for the nexthop by ip_options_rcv_srr().

Therefore "rt->rt_dst == iph->daddr" must be true.

All it really needs to do is record the route's source address in the
matching SRR option adddress.  It need not write iph->daddr again,
since that has already been done by ip_options_rcv_srr() as detailed
above.
Signed-off-by: David S. Miller <davem@davemloft.net>

->read_proc interface is going away, switch to seq_file.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

In commit 1c5cae81 (net: call dev_alloc_name from register_netdevice),
a bug of bonding was involved, see example 1 and 2.

In register_netdevice(), the name of net_device is not valid until
dev_get_valid_name() is called. But dev->netdev_ops->ndo_init(that is
bond_init) is called before dev_get_valid_name(),
and it uses the invalid name of net_device.

I think register_netdevice() should make sure that the name of net_device is
valid before calling ndo_init().

example 1:
modprobe bonding
ls  /proc/net/bonding/bond%d

ps -eLf
root      3398     2  3398  0    1 21:34 ?        00:00:00 [bond%d]

example 2:
modprobe bonding max_bonds=3

[  170.100292] bonding: Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)
[  170.101090] bonding: Warning: either miimon or arp_interval and arp_ip_target module parameters must be specified, otherwise bonding will not detect link failures! see bonding.txt for details.
[  170.102469] ------------[ cut here ]------------
[  170.103150] WARNING: at /home/pwp/net-next-2.6/fs/proc/generic.c:586 proc_register+0x126/0x157()
[  170.104075] Hardware name: VirtualBox
[  170.105065] proc_dir_entry 'bonding/bond%d' already registered
[  170.105613] Modules linked in: bonding(+) sunrpc ipv6 uinput microcode ppdev parport_pc parport joydev e1000 pcspkr i2c_piix4 i2c_core [last unloaded: bonding]
[  170.108397] Pid: 3457, comm: modprobe Not tainted 2.6.39-rc2+ #14
[  170.108935] Call Trace:
[  170.109382]  [<c0438f3b>] warn_slowpath_common+0x6a/0x7f
[  170.109911]  [<c051a42a>] ? proc_register+0x126/0x157
[  170.110329]  [<c0438fc3>] warn_slowpath_fmt+0x2b/0x2f
[  170.110846]  [<c051a42a>] proc_register+0x126/0x157
[  170.111870]  [<c051a4dd>] proc_create_data+0x82/0x98
[  170.112335]  [<f94e6af6>] bond_create_proc_entry+0x3f/0x73 [bonding]
[  170.112905]  [<f94dd806>] bond_init+0x77/0xa5 [bonding]
[  170.113319]  [<c0721ac6>] register_netdevice+0x8c/0x1d3
[  170.113848]  [<f94e0e30>] bond_create+0x6c/0x90 [bonding]
[  170.114322]  [<f94f4763>] bonding_init+0x763/0x7b1 [bonding]
[  170.114879]  [<c0401240>] do_one_initcall+0x76/0x122
[  170.115317]  [<f94f4000>] ? 0xf94f3fff
[  170.115799]  [<c0463f1e>] sys_init_module+0x1286/0x140d
[  170.116879]  [<c07c6d9f>] sysenter_do_call+0x12/0x28
[  170.117404] ---[ end trace 64e4fac3ae5fff1a ]---
[  170.117924] bond%d: Warning: failed to register to debugfs
[  170.128728] ------------[ cut here ]------------
[  170.129360] WARNING: at /home/pwp/net-next-2.6/fs/proc/generic.c:586 proc_register+0x126/0x157()
[  170.130323] Hardware name: VirtualBox
[  170.130797] proc_dir_entry 'bonding/bond%d' already registered
[  170.131315] Modules linked in: bonding(+) sunrpc ipv6 uinput microcode ppdev parport_pc parport joydev e1000 pcspkr i2c_piix4 i2c_core [last unloaded: bonding]
[  170.133731] Pid: 3457, comm: modprobe Tainted: G        W   2.6.39-rc2+ #14
[  170.134308] Call Trace:
[  170.134743]  [<c0438f3b>] warn_slowpath_common+0x6a/0x7f
[  170.135305]  [<c051a42a>] ? proc_register+0x126/0x157
[  170.135820]  [<c0438fc3>] warn_slowpath_fmt+0x2b/0x2f
[  170.137168]  [<c051a42a>] proc_register+0x126/0x157
[  170.137700]  [<c051a4dd>] proc_create_data+0x82/0x98
[  170.138174]  [<f94e6af6>] bond_create_proc_entry+0x3f/0x73 [bonding]
[  170.138745]  [<f94dd806>] bond_init+0x77/0xa5 [bonding]
[  170.139278]  [<c0721ac6>] register_netdevice+0x8c/0x1d3
[  170.139828]  [<f94e0e30>] bond_create+0x6c/0x90 [bonding]
[  170.140361]  [<f94f4763>] bonding_init+0x763/0x7b1 [bonding]
[  170.140927]  [<c0401240>] do_one_initcall+0x76/0x122
[  170.141494]  [<f94f4000>] ? 0xf94f3fff
[  170.141975]  [<c0463f1e>] sys_init_module+0x1286/0x140d
[  170.142463]  [<c07c6d9f>] sysenter_do_call+0x12/0x28
[  170.142974] ---[ end trace 64e4fac3ae5fff1b ]---
[  170.144949] bond%d: Warning: failed to register to debugfs
Signed-off-by: Weiping Pan <panweiping3@gmail.com>
Reviewed-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

This patch fixes a bug in the set_pauseparam
function that didn't well manage the ANE
field and returned broken values when use
ethtool -A|-a.
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The driver used to call phy's ethtool configuration routine to start
auto-negotiation. This change has it call directly phy's routine to
start auto-negotiation.

The initial version was hiding phy_start_aneg() return value,
this patch returns it (<0 upon error).

Tested: module compiles, tested on STM HDK7108 STB.
Signed-off-by: David Decotigny <decot@google.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The file st5481_init.c locally defines and initializes the adapter_list
variable, but does not use it for anything.  Removing the list makes it
possible to remove the list field from the st5481_adapter data structure.
In the function probe_st5481, it also makes it possible to free the locally
allocated adapter value on an error exit.
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>