Allow the DNS resolver to retrieve a set of servers and their associated
addresses, ports, preference and weight ratings.

In terms of communication with userspace, "srv=1" is added to the callout
string (the '1' indicating the maximum data version supported by the
kernel) to ask the userspace side for this.

If the userspace side doesn't recognise it, it will ignore the option and
return the usual text address list.

If the userspace side does recognise it, it will return some binary data
that begins with a zero byte that would cause the string parsers to give an
error.  The second byte contains the version of the data in the blob (this
may be between 1 and the version specified in the callout data).  The
remainder of the payload is version-specific.

In version 1, the payload looks like (note that this is packed):

	u8	Non-string marker (ie. 0)
	u8	Content (0 => Server list)
	u8	Version (ie. 1)
	u8	Source (eg. DNS_RECORD_FROM_DNS_SRV)
	u8	Status (eg. DNS_LOOKUP_GOOD)
	u8	Number of servers
	foreach-server {
		u16	Name length (LE)
		u16	Priority (as per SRV record) (LE)
		u16	Weight (as per SRV record) (LE)
		u16	Port (LE)
		u8	Source (eg. DNS_RECORD_FROM_NSS)
		u8	Status (eg. DNS_LOOKUP_GOT_NOT_FOUND)
		u8	Protocol (eg. DNS_SERVER_PROTOCOL_UDP)
		u8	Number of addresses
		char[]	Name (not NUL-terminated)
		foreach-address {
			u8		Family (AF_INET{,6})
			union {
				u8[4]	ipv4_addr
				u8[16]	ipv6_addr
			}
		}
	}

This can then be used to fetch a whole cell's VL-server configuration for
AFS, for example.
Signed-off-by: NDavid Howells <dhowells@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Trivial fix to spelling mistakes in dev_dbg warning messages

"Reloade" -> "Reload"
"chang" -> "change"
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Merge branch 'ieee802154-for-davem-2018-10-04' of git://git.kernel.org/pub/scm/linux/kernel/git/sschmidt/wpan-next

Stefan Schmidt says:

====================
pull-request: ieee802154-next 2018-10-04

An update from ieee802154 for *net-next*

A very quite cycle in the ieee802154 subsystem. We only have two cleanup
patches for this pull request.
Xue removed the platform_data struct handling from the mcr20a driver and
Alexander cleaned up some left overs in the hwsim driver.

Please pull, or let me know if there are any problems.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Minor conflict in net/core/rtnetlink.c, David Ahern's bug fix in 'net'
overlapped the renaming of a netlink attribute in net-next.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

David writes:
  "Networking fixes:
   1) Prefix length validation in xfrm layer, from Steffen Klassert.

   2) TX status reporting fix in mac80211, from Andrei Otcheretianski.

   3) Fix hangs due to TX_DROP in mac80211, from Bob Copeland.

   4) Fix DMA error regression in b43, from Larry Finger.

   5) Add input validation to xenvif_set_hash_mapping(), from Jan Beulich.

   6) SMMU unmapping fix in hns driver, from Yunsheng Lin.

   7) Bluetooh crash in unpairing on SMP, from Matias Karhumaa.

   8) WoL handling fixes in the phy layer, from Heiner Kallweit.

   9) Fix deadlock in bonding, from Mahesh Bandewar.

   10) Fill ttl inherit infor in vxlan driver, from Hangbin Liu.

   11) Fix TX timeouts during netpoll, from Michael Chan.

   12) RXRPC layer fixes from David Howells.

   13) Another batch of ndo_poll_controller() removals to deal with
       excessive resource consumption during load.  From Eric Dumazet.

   14) Fix a specific TIPC failure secnario, from LUU Duc Canh.

   15) Really disable clocks in r8169 during suspend so that low
       power states can actually be reached.

   16) Fix SYN backlog lockdep issue in tcp and dccp, from Eric Dumazet.

   17) Fix RCU locking in netpoll SKB send, which shows up in bonding,
       from Dave Jones.

   18) Fix TX stalls in r8169, from Heiner Kallweit.

   19) Fix locksup in nfp due to control message storms, from Jakub
       Kicinski.

   20) Various rmnet bug fixes from Subash Abhinov Kasiviswanathan and
       Sean Tranchetti.

   21) Fix use after free in ip_cmsg_recv_dstaddr(), from Eric Dumazet."

* gitolite.kernel.org:/pub/scm/linux/kernel/git/davem/net: (122 commits)
  ixgbe: check return value of napi_complete_done()
  sctp: fix fall-through annotation
  r8169: always autoneg on resume
  ipv4: fix use-after-free in ip_cmsg_recv_dstaddr()
  net: qualcomm: rmnet: Fix incorrect allocation flag in receive path
  net: qualcomm: rmnet: Fix incorrect allocation flag in transmit
  net: qualcomm: rmnet: Skip processing loopback packets
  net: systemport: Fix wake-up interrupt race during resume
  rtnl: limit IFLA_NUM_TX_QUEUES and IFLA_NUM_RX_QUEUES to 4096
  bonding: fix warning message
  inet: make sure to grab rcu_read_lock before using ireq->ireq_opt
  nfp: avoid soft lockups under control message storm
  declance: Fix continuation with the adapter identification message
  net: fec: fix rare tx timeout
  r8169: fix network stalls due to missing bit TXCFG_AUTO_FIFO
  tun: napi flags belong to tfile
  tun: initialize napi_mutex unconditionally
  tun: remove unused parameters
  bond: take rcu lock in netpoll_send_skb_on_dev
  rtnetlink: Fail dump if target netnsid is invalid
  ...

Jeff Kirsher says:

====================
10GbE Intel Wired LAN Driver Updates 2018-10-03

This series contains updates to ixgbe/ixgbevf and few fixes for i40e & iavf.

Shannon Nelson fixes the message length for IPsec mailbox messages.

Radoslaw fixes a transmit hang that occurs when XDP_TX exceeds the queue
limit.  Fixes a crash when we restor flow director filters after a reset.

YueHaibing cleans up dead code, which did not have any callers.

Dan Carpenter fixes an "off by one" error in IPsec for ixgbe.

Nathan Chancellor fixes the i40e driver to use the correct enum for link
speed.  Also remove a debug statement since it was not producing useful
information and equated to always "TRUE".

Most notably, Björn introduces zero-copy AF_XDP support for the ixgbe
driver.  The ixgbe zero-copy code is located in its own file ixgbe_xsk.[ch],
analogous to the i40e ZC support. Again, as in i40e, code paths have
been copied from the XDP path to the zero-copy path. Going forward we
will try to generalize more code between the AF_XDP ZC drivers, and
also reduce the heavy C&P.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The NIC driver should only enable interrupts when napi_complete_done()
returns true. This patch adds the check for ixgbe.

Cc: stable@vger.kernel.org # 4.10+
Suggested-by: NEric Dumazet <edumazet@google.com>
Signed-off-by: NSong Liu <songliubraving@fb.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This trivial patch fixes a typo in iavf.h.
Signed-off-by: NRami Rosen <ramirose@gmail.com>
Acked-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

This patch adds zero-copy Tx support for AF_XDP sockets. It implements
the ndo_xsk_async_xmit netdev ndo and performs all the Tx logic from a
NAPI context. This means pulling egress packets from the Tx ring,
placing the frames on the NIC HW descriptor ring and completing sent
frames back to the application via the completion ring.

The regular XDP Tx ring is used for AF_XDP as well. This rationale for
this is as follows: XDP_REDIRECT guarantees mutual exclusion between
different NAPI contexts based on CPU id. In other words, a netdev can
XDP_REDIRECT to another netdev with a different NAPI context, since
the operation is bound to a specific core and each core has its own
hardware ring.

As the AF_XDP Tx action is running in the same NAPI context and using
the same ring, it will also be protected from XDP_REDIRECT actions
with the exact same mechanism.

As with AF_XDP Rx, all AF_XDP Tx specific functions are added to
ixgbe_xsk.c.
Signed-off-by: NBjörn Töpel <bjorn.topel@intel.com>
Tested-by: NWilliam Tu <u9012063@gmail.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

This patch prepares for the upcoming zero-copy Tx functionality by
moving common functions used both by the regular path and zero-copy
path.
Signed-off-by: NBjörn Töpel <bjorn.topel@intel.com>
Tested-by: NWilliam Tu <u9012063@gmail.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

This patch adds zero-copy Rx support for AF_XDP sockets. Instead of
allocating buffers of type MEM_TYPE_PAGE_SHARED, the Rx frames are
allocated as MEM_TYPE_ZERO_COPY when AF_XDP is enabled for a certain
queue.

All AF_XDP specific functions are added to a new file, ixgbe_xsk.c.

Note that when AF_XDP zero-copy is enabled, the XDP action XDP_PASS
will allocate a new buffer and copy the zero-copy frame prior passing
it to the kernel stack.
Signed-off-by: NBjörn Töpel <bjorn.topel@intel.com>
Tested-by: NWilliam Tu <u9012063@gmail.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

This patch prepares for the upcoming zero-copy Rx functionality, by
moving/changing linkage of common functions, used both by the regular
path and zero-copy path.
Signed-off-by: NBjörn Töpel <bjorn.topel@intel.com>
Tested-by: NWilliam Tu <u9012063@gmail.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Add functions for Rx/Tx ring enable/disable. Instead of resetting the
whole device, only the affected ring is disabled or enabled.

This plumbing is used in later commits, when zero-copy AF_XDP support
is introduced.
Signed-off-by: NBjörn Töpel <bjorn.topel@intel.com>
Tested-by: NWilliam Tu <u9012063@gmail.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

This patch fix crash when we have restore flow director filters after reset
adapter. In ixgbe_fdir_filter_restore() filter->action is outside of the
rx_ring array, as it has a VF identifier in the upper 32 bits.
Signed-off-by: NRadoslaw Tyl <radoslawx.tyl@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Clang warns that the address of a pointer will always evaluated as true
in a boolean context.

drivers/net/ethernet/intel/i40e/i40e_debugfs.c:136:9: warning: address
of array 'vsi->active_vlans' will always evaluate to 'true'
[-Wpointer-bool-conversion]
                 vsi->active_vlans ? "<valid>" : "<null>");
                 ~~~~~^~~~~~~~~~~~ ~
./include/linux/device.h:1431:33: note: expanded from macro 'dev_info'
        _dev_info(dev, dev_fmt(fmt), ##__VA_ARGS__)
                                       ^~~~~~~~~~~
1 warning generated.

Given that the statement shows that active_vlans is always valid, just
remove the statement since it's not giving any useful information.

Link: https://github.com/ClangBuiltLinux/linux/issues/82Signed-off-by: NNathan Chancellor <natechancellor@gmail.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Clang warns when one enumerated type is converted implicitly to another.

drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c:4214:42: warning:
implicit conversion from enumeration type 'enum i40e_aq_link_speed' to
different enumeration type 'enum virtchnl_link_speed'
      [-Wenum-conversion]
                pfe.event_data.link_event.link_speed = I40E_LINK_SPEED_40GB;
                                                     ~ ^~~~~~~~~~~~~~~~~~~~
1 warning generated.

Use the proper enum from virtchnl_link_speed, which has the same value
as I40E_LINK_SPEED_40GB, VIRTCHNL_LINK_SPEED_40GB. This appears to be
missed by commit ff3f4cc2 ("virtchnl: finish conversion to virtchnl
interface").

Link: https://github.com/ClangBuiltLinux/linux/issues/81Signed-off-by: NNathan Chancellor <natechancellor@gmail.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

The ipsec->tx_tbl[] array has IXGBE_IPSEC_MAX_SA_COUNT elements so the >
should be a >=.

Fixes: 0062e7cc ("ixgbevf: add VF IPsec offload code")
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NShannon Nelson <shannon.nelson@oracle.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

There are no in-tree callers.
Signed-off-by: NYueHaibing <yuehaibing@huawei.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

We have Tx hang when number Tx and XDP queues are more than 64.
In XDP always is MTQC == 0x0 (64TxQs). We need more space for Tx queues.
Signed-off-by: NRadoslaw Tyl <radoslawx.tyl@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Don't be fancy with message lengths, just set lengths to
number of dwords, not bytes.

Fixes: 0062e7cc ("ixgbevf: add VF IPsec offload code")
Reported-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NShannon Nelson <shannon.nelson@oracle.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Merge tag 'linux-kselftest-4.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Shuah writes:
  "kselftest fixes for 4.19-rc7

   This fixes update for 4.19-rc7 consists one fix to rseq test to
   prevent it from seg-faulting when compiled with -fpie."

* tag 'linux-kselftest-4.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  rseq/selftests: fix parametrized test with -fpie

Jeff Kirsher says:

====================
100GbE Intel Wired LAN Driver Updates 2018-10-03

This series contains updates to ice and virtchnl.

Yashaswini Raghuram adds a new virtchnl capability flag to support the
exchange of additional supported speeds.

Anirudh adds support for SR-IOV for the ice driver.  Added code to
initialize, configure and use mailbox queues for PF and VF
communication.  Updated the VSI and queue management to handle both PF
and VF VSI type.  Added "Adaptive Virtual Function (AVF)" support for
the ice PF driver by implementing virtchnl commands.  Extended the
malicious driver detection logic to include the VF driver as well.
Fixed the queue region size which needs to be log base 2 of the number
of queues in region.

Brett fixes an issue which was causing switch rules to be lost, by
making a call to ice_update_pkt_fwd_rule() with the necessary changes.
Fixed how the PF and VF assigned the ITR index by adding a struct member
itr_idx to be used to dynamically program the correct ITR index.

Dave fixed a potential NULL pointer dereference by adding checks in the
filter handling.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

cxgb_set_tx_maxrate will be called holding rtnl lock,
hence remove all unneeded locks.
Signed-off-by: NGanesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Replace "fallthru" with a proper "fall through" annotation.

This fix is part of the ongoing efforts to enabling
-Wimplicit-fallthrough
Signed-off-by: NGustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Update version string to 0.7.2-k
Signed-off-by: NAnirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

The ice_ena/dis_vsi should have a single differentiating
factor to determine if the netdev_ops call is used or a
direct call to ice_vsi_open/close.  This is if the netif is
running or not.  If netif is running, use ndo_open/ndo_close.
Else, use ice_vsi_open/ice_vsi_close.
Signed-off-by: NDave Ertman <david.m.ertman@intel.com>
Signed-off-by: NAnirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

This issue came about when looking at the VF function
ice_vc_cfg_irq_map_msg. Currently we are assigning the itr_setting value
to the itr_idx received from the AVF driver, which is not correct and is
not used for the VF flow anyway. Currently the only way we set the ITR
index for both the PF and VF driver is by hard coding ICE_TX_ITR or
ICE_RX_ITR for the ITR index on each q_vector.

To fix this, add the member itr_idx in struct ice_ring_container. This
can then be used to dynamically program the correct ITR index. This change
also affected the PF driver so make the necessary changes there as well.

Also, removed the itr_setting member in struct ice_ring because it is not
being used meaningfully and is going to be removed in a future patch that
includes dynamic ITR.

On another note, this will be useful moving forward if we decide to split
Rx/Tx rings on different q_vectors instead of sharing them as queue pairs.
Signed-off-by: NBrett Creeley <brett.creeley@intel.com>
Signed-off-by: NAnirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Add checks in the filter handling flow to avoid dereferencing
NULL pointers.
Signed-off-by: NDave Ertman <david.m.ertman@intel.com>
Signed-off-by: NAnirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

When a switch rule is initially created we set the filter action to
ICE_FWD_TO_VSI. The filter action changes to ICE_FWD_TO_VSI_LIST
whenever more than one VSI is subscribed to the same switch rule. When
the switch rule goes from 2 VSIs in the list to 1 VSI we remove and
delete the VSI list rule, but we currently don't update the switch rule
in hardware. This is causing switch rules to be lost, so fix that by
making a call to ice_update_pkt_fwd_rule() with the necessary changes.
Signed-off-by: NBrett Creeley <brett.creeley@intel.com>
Signed-off-by: NAnirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

When adding a rule, queue region size needs to be provided as log base 2
of the number of queues in region. Fix that.
Signed-off-by: NAnirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

This patch extends the existing malicious driver operation detection
logic to cover malicious operations by the VF driver as well.
Signed-off-by: NAnirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

When PF gets a link status change event, notify the VFs of the same.
Signed-off-by: NAnirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

virtchnl is a protocol/interface specification that allows the Intel
"Adaptive Virtual Function (AVF)" driver (iavf.ko) to work with more than
one physical function driver. The AVF driver sends "virtchnl commands"
(control plane only) to the PF driver over mailbox queues and the PF driver
executes these commands and returns a result to the VF, again over mailbox.

This patch adds AVF support for the ice PF driver by implementing the
following virtchnl commands:

VIRTCHNL_OP_VERSION
VIRTCHNL_OP_GET_VF_RESOURCES
VIRTCHNL_OP_RESET_VF
VIRTCHNL_OP_ADD_ETH_ADDR
VIRTCHNL_OP_DEL_ETH_ADDR
VIRTCHNL_OP_CONFIG_VSI_QUEUES
VIRTCHNL_OP_ENABLE_QUEUES
VIRTCHNL_OP_DISABLE_QUEUES
VIRTCHNL_OP_ADD_ETH_ADDR
VIRTCHNL_OP_DEL_ETH_ADDR
VIRTCHNL_OP_CONFIG_VSI_QUEUES
VIRTCHNL_OP_ENABLE_QUEUES
VIRTCHNL_OP_DISABLE_QUEUES
VIRTCHNL_OP_REQUEST_QUEUES
VIRTCHNL_OP_CONFIG_IRQ_MAP
VIRTCHNL_OP_CONFIG_RSS_KEY
VIRTCHNL_OP_CONFIG_RSS_LUT
VIRTCHNL_OP_GET_STATS
VIRTCHNL_OP_ADD_VLAN
VIRTCHNL_OP_DEL_VLAN
VIRTCHNL_OP_ENABLE_VLAN_STRIPPING
VIRTCHNL_OP_DISABLE_VLAN_STRIPPING
Signed-off-by: NAnirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

This patch implements handlers for the following NDO operations:

.ndo_set_vf_spoofchk
.ndo_set_vf_mac
.ndo_get_vf_config
.ndo_set_vf_trust
.ndo_set_vf_vlan
.ndo_set_vf_link_state
Signed-off-by: NAnirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Post VF initialization, there are a couple of different ways in which a
VF reset can be triggered. One is when the underlying PF itself goes
through a reset and other is via a VFLR interrupt. ice_reset_vf introduced
in this patch handles both these cases.

Also introduced in this patch is a helper function ice_aq_send_msg_to_vf
to send messages to VF over the mailbox queue. The PF uses this to send
reset notifications to VFs.
Signed-off-by: NAnirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Until now, all the VSI and queue management code supported only the PF
VSI type (ICE_VSI_PF). Update these flows to handle the VF VSI type
(ICE_VSI_VF) type as well.
Signed-off-by: NAnirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

This patch implements parts of ice_sriov_configure and VF reset flow.

To create virtual functions (VFs), the user sets a value in num_vfs
through sysfs. This results in the kernel calling the handler for
.sriov_configure which is ice_sriov_configure.

VF setup first starts with a VF reset, followed by allocation of the VF
VSI using ice_vf_vsi_setup. Once the VF setup is complete a state bit
ICE_VF_STATE_INIT is set in the vf->states bitmap to indicate that
the VF is ready to go.

Also for VF reset to go into effect, it's necessary to issue a disable
queue command (ice_aqc_opc_dis_txqs). So this patch updates multiple
functions in the disable queue flow to take additional parameters that
distinguish if queues are being disabled due to VF reset.
Signed-off-by: NAnirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Mailbox queue is a type of control queue that's used for communication
between PF and VF. This patch adds code to initialize, configure and
use mailbox queues.

This patch also adds support to detect and parse SR-IOV capabilities
returned by the hardware.
Signed-off-by: NAnirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Introduced a new virtchnl capability flag and a struct to support exchange
of additional supported speeds.
Signed-off-by: NYashaswini Raghuram Prathivadi Bhayankaram <yashaswini.raghuram.prathivadi.bhayankaram@intel.com>
Signed-off-by: NAnirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Mauro writes:
  "media fixes for v4.19-rc6"

* tag 'media/v4.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  media: v4l: event: Prevent freeing event subscriptions while accessed