Currently, if a VF's Rx Mode will be configured to support promiscuous mode
the PF will comply, causing the VF to actually become promiscuous.
This will enable the VF to see all unicast traffic which might be intended for
other VMs, which we believe should not be possible.

This patch will cause the hypervisor to ignore the VF's request for changes in
its Rx mode (other than disabling it), preventing it from becoming promiscuous.
Reported-by: NYoann Juet <yoann.juet@univ-nantes.fr>
Signed-off-by: NYuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: NAriel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

VFs are currently showing port statistics, although they can't really access
those - thus all such statistics will always show a value of 0.

This patch removes said statistics from the VF's view as to not confuse the
user.
Signed-off-by: NYuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: NAriel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Since we now posses a workqueue dedicated for sriov, the paradigm that sriov-
related tasks cannot sleep is no longer correct.

The VFOP mechanism was the one previously supporting said paradigm - the sriov
related tasks were broken into segments which did not require sleep, and the
mechanism re-scheduled the next segment whenever possible.

This patch remvoes the VFOP mechanism altogether - the resulting code is a much
easier to follow code; The segments are gathered into straight-forward
functions which sleep whenever neccessary.
Signed-off-by: NYuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: NAriel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The bnx2x sriov mechanisms were done in the bnx2x slowpath workitem which
runs on the bnx2x's workqueue; This workitem is also responsible for the bottom
half of interrupt handling in the driver, and specifically it also receives
FW notifications of ramrod completions, allowing other flows to progress.

The original design of the sriov reltaed-flows was based on the notion such
flows must not sleep, since their context is the slowpath workitem.
Otherwise, we might reach timeouts - those flows may wait for ramrod completion
that will never arrive as the workitem wlll not be re-scheduled until that same
flow will be over.

In more recent time bnx2x started supporting features in which the VF interface
can be configured by the tools accessing the PF on the hypervisor.
This support created possible races on the VF-PF lock (which is taken either
when the PF is handling a VF message or when the PF is doing some slowpath work
on behalf of the VF) which may cause timeouts on the VF side and lags on the PF
side.

This patch changes the scheme - it creates a new workqueue for sriov related
tasks and moves all handling currently done in the slowpath task into the the
new workqueue.
Signed-off-by: NYuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: NAriel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This adds support in a new management feature which needs the driver versions
(bnx2x, bnx2fc and bnx2i) loaded for each interface.
Signed-off-by: NYuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: NAriel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This fixes:

drivers/net/xen-netback/netback.c: In function ‘xenvif_tx_dealloc_action’:
drivers/net/xen-netback/netback.c:1573:8: warning: format ‘%x’ expects argument of type ‘unsigned int’, but argument 3 has type ‘long int’ [-Wformat=]
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This reverts commit e9275f5e. This commit is the
last in the netback grant mapping series, and it tries to do more aggressive
aggreagtion of unmap operations. However practical use showed almost no
positive effect, whilst with certain frontends it causes significant performance
regression.
Signed-off-by: NZoltan Kiss <zoltan.kiss@citrix.com>
Acked-by: NIan Campbell <ian.campbell@citrix.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Replace dev_kfree_skb with dev_kfree_skb_any in start_xmit which can
be called in hard irq and other contexts.

start_xmit only frees skbs that it is dropping.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_kfree_skb_any in xennet_start_xmit
which can be called in hard irq and other contexts.  xennet_start_xmit
only fress skbs which it drops.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_kfree_skb_any in vmnet3_tx_xmit which
can be called in hard irq and other contexts.  vmnet3_tx_xmit only
frees skbs that it has dropped.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_consume_skb_any in xemaclite_send which
can be called in hard irq and other contexts.  xemacelite_send only
frees skbs that it has successfully transmitted.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_kfree_skb_any in velocity_xmit that can
be called in hard irq and other contexts.  Packets are freed and
dropped in velocity_xmit when they are too fragmented and can
not be linearized.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_kfree_skb_any in rhine_start_tx which
can be called in hard irq and other contexts.  Packets are only freed
in rhine_start_tx if they are dropped.

Replace dev_kfree_skb with dev_consume_skb_any in rhine_tx that can be
called in hard irq and other contexts.  rhine_tx handles successfully
transmitted packets.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_consume_skb_any in
spider_net_release_tx_chain which can be called in hard irq and other
contexts.

dev_consume_skb_any was choosen as it preserves the current
dev_kfree_skb semantics (dev_kfree_skb is consume_skb) and
is because it is correct most of the time as most packets
will have been successfully transmitted not dropeed.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace kfree_skb with dev_consume_skb_any in tile_net_tx and
tile_net_tx_tso which can be called in hard irq and other contexts.

At the point where the skbs are freed a packet has been successfully
transmitted so dev_consume_skb_any is the appropriate variant to use.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_consume_skb_any in gem_tx which can be
called in hard irq and other contexts.  gem_tx handles successfully
transmitted packets.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_consume_skb_any in stmmac_tx_clean that can
be called in hard irq and other contexts.  stmmac_tx_clean handles
freeing successfully transmitted packets.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_consume_skb_any in smsc911x_hard_xmit
which can be called in hard irq and other contexts. smsc911x_hard_xmit
always transmits and consumes the specified skb.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_consume_skb_any in
smc_hardware_send_pkt that can be called in hard irq and other
contexts, and handles successfully transmitted packets.

Replace dev_kfree_skb with dev_kfree_skb_any in smc_hard_start_xmit which
can be called in hard irq and other contexts, and only frees skbs
when dropping them.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_kfree_skb_any in functions that can
be called in hard irq and other contexts.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_kfree_skb_any in functions that can
be called in hard irq and other contexts.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_consume_skb_any in sc92031_start_xmit
that can be called in hard irq and other contexts.

Using dev_consume_skb_any preserves the current semantics (as
dev_kfree_skb is just consume_skb) and since packet drops
are rare is usually accurate.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace kfree_skb with dev_kfree_skb_any in functions that can
be called in hard irq and other contexts.

Every location changes is a drop making dev_kfree_skby_any appropriate.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_kfree_skb_any in vxge_xmit that can
be called in hard irq and other contexts.

vxge_xmit only calls dev_kfree_skb_any when errors result in dropping
skbs.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_kfree_skb_any in s2io_xmit that can
be called in hard irq and other contexts.

All instances that are changed are packet drops.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_consume_skb_any in copy_old_skb that can
be called in hard irq and other contexts.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_kfree_skb_any in sky2_xmit_frame that
can be called in hard irq and other contexts.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_kfree_skb_any skge_xmit_free that can
be called in hard irq and other contexts, on the path that
handles dropped packets.

Replace dev_kfree_skb with dev_consume_skb_any in skge_tx_done that can
be called in hard irq and other contexts, on the path that handles
successfully transmitted skbs.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_kfree_skb_any in mv643xx_eth_xmit and
txq_submit_skb that can be called in hard irq and other contexts,
on paths where the skbs are dropped.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_kfree_skb_any in jme_expand_header that
can be called in hard irq and other contexts, on the failure
path where the skb is dropped.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_consume_skb_any in ibmveth_start_xmit
that can be called in hard irq and other contexts.

In this code path the packet can have either been transmitted
or dropped, dev_consume_skb_any was choosen because that preserves
the existing semantics of the code, and a transmitted packet is
more likely.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_consume_skb_any in functions that can
be called in hard irq and other contexts.

None of the locations was a packet drop so dev_kfree_skb_any is
inappropriate.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_kfree_skb_any in i596_start_xmit that
can be called in hard irq and other contexts, when the skb is dropped.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_consume_skb_any in ucc_geth_tx that can
be called in hard irq and other contexts, when processing the
tx completion event.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace kfree_skb with dev_kfree_skb_any in fec_enet_start_xmit that
can be called in hard irq and other contexts, when the packet is
dropped.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_kfree_skb_any in start_tx that can
be called in hard irq and other contexts, when the skb is dropped.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_kfree_skb_any in uli562x_start_xmit
that can be called in hard irq and other contexts, when the packet is
dropped.

Replace dev_kfree_skb with dev_consume_skb_any in uli562x_start_xmit
that can be called in hard irq and other contexts, when the packet is
transmitted.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_kfree_skb_any in dmfe_start_xmit that
can be called in hard irq and other contexts, when the packet is
dropped.

Replace dev_kfree_skb with dev_consume_skb_any in dmfe_start_xmit that
can be called in hard irq and other contexts, when the packet is
transmitted.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_consume_skb_any in dm9000_start_xmit
that can be called in hard irq and other contexts, on the path
that successfully transmits the packet.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

Replace dev_kfree_skb with dev_kfree_skb_any in enic_hard_start_xmit
that can be called in hard irq and other contexts.

enic_hard_start_xmit only frees the skb when dropping it.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>