i40e: Fix incorrect address type for IPv6 flow rules

It was not possible to create 1-tuple flow director
rule for IPv6 flow type. It was caused by incorrectly
checking for source IP address when validating user provided
destination IP address.

Fix this by changing ip6src to correct ip6dst address
in destination IP address validation for IPv6 flow type.

Fixes: efca91e89b67 ("i40e: Add flow director support for IPv6")
Signed-off-by: Sylwester Dziedziuch <sylwesterx.dziedziuch@intel.com>
Tested-by: Gurucharan <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

ixgbe: stop resetting SYSTIME in ixgbe_ptp_start_cyclecounter

The ixgbe_ptp_start_cyclecounter is intended to be called whenever the
cyclecounter parameters need to be changed.

Since commit a9763f3cb54c ("ixgbe: Update PTP to support X550EM_x
devices"), this function has cleared the SYSTIME registers and reset the
TSAUXC DISABLE_SYSTIME bit.

While these need to be cleared during ixgbe_ptp_reset, it is wrong to clear
them during ixgbe_ptp_start_cyclecounter. This function may be called
during both reset and link status change. When link changes, the SYSTIME
counter is still operating normally, but the cyclecounter should be updated
to account for the possibly changed parameters.

Clearing SYSTIME when link changes causes the timecounter to jump because
the cycle counter now reads zero.

Extract the SYSTIME initialization out to a new function and call this
during ixgbe_ptp_reset. This prevents the timecounter adjustment and avoids
an unnecessary reset of the current time.

This also restores the original SYSTIME clearing that occurred during
ixgbe_ptp_reset before the commit above.

Reported-by: Steve Payne <spayne@aurora.tech>
Reported-by: Ilya Evenbach <ievenbach@aurora.tech>
Fixes: a9763f3cb54c ("ixgbe: Update PTP to support X550EM_x devices")
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Gurucharan <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

Merge branch 'sysctl-data-races'

Kuniyuki Iwashima says:

====================
net: sysctl: Fix data-races around net.core.XXX

This series fixes data-races around all knobs in net_core_table and
netns_core_table except for bpf stuff.

These knobs are skipped:

  - 4 bpf knobs
  - netdev_rss_key: Written only once by net_get_random_once() and
                    read-only knob
  - rps_sock_flow_entries: Protected with sock_flow_mutex
  - flow_limit_cpu_bitmap: Protected with flow_limit_update_mutex
  - flow_limit_table_len: Protected with flow_limit_update_mutex
  - default_qdisc: Protected with qdisc_mod_lock
  - warnings: Unused
  - high_order_alloc_disable: Protected with static_key_mutex
  - skb_defer_max: Already using READ_ONCE()
  - sysctl_txrehash: Already using READ_ONCE()

Note 5th patch fixes net.core.message_cost and net.core.message_burst,
and lib/ratelimit.c does not have an explicit maintainer.

Changes:
  v3:
    * Fix build failures of CONFIG_SYSCTL=n case in 13th & 14th patches

  v2: https://lore.kernel.org/netdev/20220818035227.81567-1-kuniyu@amazon.com/
    * Remove 4 bpf knobs and added 6 knobs

  v1: https://lore.kernel.org/netdev/20220816052347.70042-1-kuniyu@amazon.com/
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

net: Fix a data-race around sysctl_somaxconn.

While reading sysctl_somaxconn, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: Fix a data-race around netdev_unregister_timeout_secs.

While reading netdev_unregister_timeout_secs, it can be changed
concurrently.  Thus, we need to add READ_ONCE() to its reader.

Fixes: 5aa3afe107d9 ("net: make unregister netdev warning timeout configurable")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Acked-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: Fix a data-race around gro_normal_batch.

While reading gro_normal_batch, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.

Fixes: 323ebb61e32b ("net: use listified RX for handling GRO_NORMAL skbs")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Acked-by: Edward Cree <ecree.xilinx@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: Fix data-races around sysctl_devconf_inherit_init_net.

While reading sysctl_devconf_inherit_init_net, it can be changed
concurrently.  Thus, we need to add READ_ONCE() to its readers.

Fixes: 856c395cfa63 ("net: introduce a knob to control whether to inherit devconf config")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: Fix data-races around sysctl_fb_tunnels_only_for_init_net.

While reading sysctl_fb_tunnels_only_for_init_net, it can be changed
concurrently.  Thus, we need to add READ_ONCE() to its readers.

Fixes: 79134e6ce2c9 ("net: do not create fallback tunnels for non-default namespaces")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: Fix a data-race around netdev_budget_usecs.

While reading netdev_budget_usecs, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.

Fixes: 7acf8a1e8a28 ("Replace 2 jiffies with sysctl netdev_budget_usecs to enable softirq tuning")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: Fix data-races around sysctl_max_skb_frags.

While reading sysctl_max_skb_frags, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its readers.

Fixes: 5f74f82ea34c ("net:Add sysctl_max_skb_frags")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: Fix a data-race around netdev_budget.

While reading netdev_budget, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.

Fixes: 51b0bdedb8e7 ("[NET]: Separate two usages of netdev_max_backlog.")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: Fix a data-race around sysctl_net_busy_read.

While reading sysctl_net_busy_read, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.

Fixes: 2d48d67fa8cd ("net: poll/select low latency socket support")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: Fix a data-race around sysctl_net_busy_poll.

While reading sysctl_net_busy_poll, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.

Fixes: 060212928670 ("net: add low latency socket poll")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: Fix a data-race around sysctl_tstamp_allow_data.

While reading sysctl_tstamp_allow_data, it can be changed
concurrently.  Thus, we need to add READ_ONCE() to its reader.

Fixes: b245be1f4db1 ("net-timestamp: no-payload only sysctl")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: Fix data-races around sysctl_optmem_max.

While reading sysctl_optmem_max, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its readers.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

ratelimit: Fix data-races in ___ratelimit().

While reading rs->interval and rs->burst, they can be changed
concurrently via sysctl (e.g. net_ratelimit_state).  Thus, we
need to add READ_ONCE() to their readers.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: Fix data-races around netdev_tstamp_prequeue.

While reading netdev_tstamp_prequeue, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its readers.

Fixes: 3b098e2d7c69 ("net: Consistent skb timestamping")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: Fix data-races around netdev_max_backlog.

While reading netdev_max_backlog, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its readers.

While at it, we remove the unnecessary spaces in the doc.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: Fix data-races around weight_p and dev_weight_[rt]x_bias.

While reading weight_p, it can be changed concurrently.  Thus, we need
to add READ_ONCE() to its reader.

Also, dev_[rt]x_weight can be read/written at the same time.  So, we
need to use READ_ONCE() and WRITE_ONCE() for its access.  Moreover, to
use the same weight_p while changing dev_[rt]x_weight, we add a mutex
in proc_do_dev_weight().

Fixes: 3d48b53fb2ae ("net: dev_weight: TX/RX orthogonality")
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: Fix data-races around sysctl_[rw]mem_(max|default).

While reading sysctl_[rw]mem_(max|default), they can be changed
concurrently.  Thus, we need to add READ_ONCE() to its readers.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/core/skbuff: Check the return value of skb_copy_bits()

skb_copy_bits() could fail, which requires a check on the return
value.

Signed-off-by: Li Zhong <floridsleeves@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec

Steffen Klassert says:

====================
pull request (net): ipsec 2022-08-24

1) Fix a refcount leak in __xfrm_policy_check.
   From Xin Xiong.

2) Revert "xfrm: update SA curlft.use_time". This
   violates RFC 2367. From Antony Antony.

3) Fix a comment on XFRMA_LASTUSED.
   From Antony Antony.

4) x->lastused is not cloned in xfrm_do_migrate.
   Fix from Antony Antony.

5) Serialize the calls to xfrm_probe_algs.
   From Herbert Xu.

6) Fix a null pointer dereference of dst->dev on a metadata
   dst in xfrm_lookup_with_ifid. From Nikolay Aleksandrov.

Please pull or let me know if there are problems.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

fec: Restart PPS after link state change

On link state change, the controller gets reset,
causing PPS to drop out and the PHC to lose its
time and calibration. So we restart it if needed,
restoring calibration and time registers.

Changes since v2:
* Add `fec_ptp_save_state()`/`fec_ptp_restore_state()`
* Use `ktime_get_real_ns()`
* Use `BIT()` macro
Changes since v1:
* More ECR #define's
* Stop PPS in `fec_ptp_stop()`

Signed-off-by: Csókás Bence <csokas.bence@prolan.hu>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: neigh: don't call kfree_skb() under spin_lock_irqsave()

It is not allowed to call kfree_skb() from hardware interrupt
context or with interrupts being disabled. So add all skb to
a tmp list, then free them after spin_unlock_irqrestore() at
once.

Fixes: 66ba215cb513 ("neigh: fix possible DoS due to net iface start/stop loop")
Suggested-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Merge tag 'mlx5-fixes-2022-08-22' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
mlx5 fixes 2022-08-22

This series provides bug fixes to mlx5 driver.

* tag 'mlx5-fixes-2022-08-22' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux:
  net/mlx5: Unlock on error in mlx5_sriov_enable()
  net/mlx5e: Fix use after free in mlx5e_fs_init()
  net/mlx5e: kTLS, Use _safe() iterator in mlx5e_tls_priv_tx_list_cleanup()
  net/mlx5: unlock on error path in esw_vfs_changed_event_handler()
  net/mlx5e: Fix wrong tc flag used when set hw-tc-offload off
  net/mlx5e: TC, Add missing policer validation
  net/mlx5e: Fix wrong application of the LRO state
  net/mlx5: Avoid false positive lockdep warning by adding lock_class_key
  net/mlx5: Fix cmd error logging for manage pages cmd
  net/mlx5: Disable irq when locking lag_lock
  net/mlx5: Eswitch, Fix forwarding decision to uplink
  net/mlx5: LAG, fix logic over MLX5_LAG_FLAG_NDEVS_READY
  net/mlx5e: Properly disable vlan strip on non-UL reps
====================

Link: https://lore.kernel.org/r/20220822195917.216025-1-saeed@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue

Tony Nguyen says:

====================
ice: xsk: reduced queue count fixes

Maciej Fijalkowski says:

this small series is supposed to fix the issues around AF_XDP usage with
reduced queue count on interface. Due to the XDP rings setup, some
configurations can result in sockets not seeing traffic flowing. More
about this in description of patch 2.

* '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
  ice: xsk: use Rx ring's XDP ring when picking NAPI context
  ice: xsk: prohibit usage of non-balanced queue id
====================

Link: https://lore.kernel.org/r/20220822163257.2382487-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Merge branch 'bnxt_en-bug-fixes'

Michael Chan says:

====================
bnxt_en: Bug fixes

This series includes 2 fixes for regressions introduced by the XDP
multi-buffer feature, 1 devlink reload bug fix, and 1 SRIOV resource
accounting bug fix.
====================

Link: https://lore.kernel.org/r/1661180814-19350-1-git-send-email-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

bnxt_en: fix LRO/GRO_HW features in ndo_fix_features callback

LRO/GRO_HW should be disabled if there is an attached XDP program.
BNXT_FLAG_TPA is the current setting of the LRO/GRO_HW.  Using
BNXT_FLAG_TPA to disable LRO/GRO_HW will cause these features to be
permanently disabled once they are disabled.

Fixes: 1dc4c557bfed ("bnxt: adding bnxt_xdp_build_skb to build skb from multibuffer xdp_buff")
Signed-off-by: Vikas Gupta <vikas.gupta@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

bnxt_en: fix NQ resource accounting during vf creation on 57500 chips

There are 2 issues:

1. We should decrement hw_resc->max_nqs instead of hw_resc->max_irqs
   with the number of NQs assigned to the VFs.  The IRQs are fixed
   on each function and cannot be re-assigned.  Only the NQs are being
   assigned to the VFs.

2. vf_msix is the total number of NQs to be assigned to the VFs.  So
   we should decrement vf_msix from hw_resc->max_nqs.

Fixes: b16b68918674 ("bnxt_en: Add SR-IOV support for 57500 chips.")
Signed-off-by: Vikas Gupta <vikas.gupta@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

bnxt_en: set missing reload flag in devlink features

Add missing devlink_set_features() API for callbacks reload_down
and reload_up to function.

Fixes: 228ea8c187d8 ("bnxt_en: implement devlink dev reload driver_reinit")
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Vikas Gupta <vikas.gupta@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

bnxt_en: Use PAGE_SIZE to init buffer when multi buffer XDP is not in use

Using BNXT_PAGE_MODE_BUF_SIZE + offset as buffer length value is not
sufficient when running single buffer XDP programs doing redirect
operations. The stack will complain on missing skb tail room. Fix it
by using PAGE_SIZE when calling xdp_init_buff() for single buffer
programs.

Fixes: b231c3f3414c ("bnxt: refactor bnxt_rx_xdp to separate xdp_init_buff/xdp_prepare_buff")
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net: dsa: microchip: make learning configurable and keep it off while standalone

Address learning should initially be turned off by the driver for port
operation in standalone mode, then the DSA core handles changes to it
via ds->ops->port_bridge_flags().

Leaving address learning enabled while ports are standalone breaks any
kind of communication which involves port B receiving what port A has
sent. Notably it breaks the ksz9477 driver used with a (non offloaded,
ports act as if standalone) bonding interface in active-backup mode,
when the ports are connected together through external switches, for
redundancy purposes.

This fixes a major design flaw in the ksz9477 and ksz8795 drivers, which
unconditionally leave address learning enabled even while ports operate
as standalone.

Fixes: b987e98e50ab ("dsa: add DSA switch driver for Microchip KSZ9477")
Link: https://lore.kernel.org/netdev/CAFZh4h-JVWt80CrQWkFji7tZJahMfOToUJQgKS5s0_=9zzpvYQ@mail.gmail.com/
Reported-by: Brian Hutchinson <b.hutchman@gmail.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://lore.kernel.org/r/20220818164809.3198039-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net: dsa: don't dereference NULL extack in dsa_slave_changeupper()

When a driver returns -EOPNOTSUPP in dsa_port_bridge_join() but failed
to provide a reason for it, DSA attempts to set the extack to say that
software fallback will kick in.

The problem is, when we use brctl and the legacy bridge ioctls, the
extack will be NULL, and DSA dereferences it in the process of setting
it.

Sergei Antonov proves this using the following stack trace:

Unable to handle kernel NULL pointer dereference at virtual address 00000000
PC is at dsa_slave_changeupper+0x5c/0x158

 dsa_slave_changeupper from raw_notifier_call_chain+0x38/0x6c
 raw_notifier_call_chain from __netdev_upper_dev_link+0x198/0x3b4
 __netdev_upper_dev_link from netdev_master_upper_dev_link+0x50/0x78
 netdev_master_upper_dev_link from br_add_if+0x430/0x7f4
 br_add_if from br_ioctl_stub+0x170/0x530
 br_ioctl_stub from br_ioctl_call+0x54/0x7c
 br_ioctl_call from dev_ifsioc+0x4e0/0x6bc
 dev_ifsioc from dev_ioctl+0x2f8/0x758
 dev_ioctl from sock_ioctl+0x5f0/0x674
 sock_ioctl from sys_ioctl+0x518/0xe40
 sys_ioctl from ret_fast_syscall+0x0/0x1c

Fix the problem by only overriding the extack if non-NULL.

Fixes: 1c6e8088d9a7 ("net: dsa: allow port_bridge_join() to override extack message")
Link: https://lore.kernel.org/netdev/CABikg9wx7vB5eRDAYtvAm7fprJ09Ta27a4ZazC=NX5K4wn6pWA@mail.gmail.com/
Reported-by: Sergei Antonov <saproj@gmail.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Sergei Antonov <saproj@gmail.com>
Link: https://lore.kernel.org/r/20220819173925.3581871-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net: ipvtap - add __init/__exit annotations to module init/exit funcs

Looks to have been left out in an oversight.

Cc: Mahesh Bandewar <maheshb@google.com>
Cc: Sainath Grandhi <sainath.grandhi@intel.com>
Fixes: 235a9d89da97 ('ipvtap: IP-VLAN based tap driver')
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Link: https://lore.kernel.org/r/20220821130808.12143-1-zenczykowski@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

Merge branch 'bonding-802-3ad-fix-no-transmission-of-lacpdus'

Jonathan Toppins says:

====================
bonding: 802.3ad: fix no transmission of LACPDUs

Configuring a bond in a specific order can leave the bond in a state
where it never transmits LACPDUs.

The first patch adds some kselftest infrastructure and the reproducer
that demonstrates the problem. The second patch fixes the issue. The
new third patch makes ad_ticks_per_sec a static const and removes the
passing of this variable via the stack.
====================

Link: https://lore.kernel.org/r/cover.1660919940.git.jtoppins@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

bonding: 3ad: make ad_ticks_per_sec a const

The value is only ever set once in bond_3ad_initialize and only ever
read otherwise. There seems to be no reason to set the variable via
bond_3ad_initialize when setting the global variable will do. Change
ad_ticks_per_sec to a const to enforce its read-only usage.

Signed-off-by: Jonathan Toppins <jtoppins@redhat.com>
Acked-by: Jay Vosburgh <jay.vosburgh@canonical.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

bonding: 802.3ad: fix no transmission of LACPDUs

This is caused by the global variable ad_ticks_per_sec being zero as
demonstrated by the reproducer script discussed below. This causes
all timer values in __ad_timer_to_ticks to be zero, resulting
in the periodic timer to never fire.

To reproduce:
Run the script in
`tools/testing/selftests/drivers/net/bonding/bond-break-lacpdu-tx.sh` which
puts bonding into a state where it never transmits LACPDUs.

line 44: ip link add fbond type bond mode 4 miimon 200 \
            xmit_hash_policy 1 ad_actor_sys_prio 65535 lacp_rate fast
setting bond param: ad_actor_sys_prio
given:
    params.ad_actor_system = 0
call stack:
    bond_option_ad_actor_sys_prio()
    -> bond_3ad_update_ad_actor_settings()
       -> set ad.system.sys_priority = bond->params.ad_actor_sys_prio
       -> ad.system.sys_mac_addr = bond->dev->dev_addr; because
            params.ad_actor_system == 0
results:
     ad.system.sys_mac_addr = bond->dev->dev_addr

line 48: ip link set fbond address 52:54:00:3B:7C:A6
setting bond MAC addr
call stack:
    bond->dev->dev_addr = new_mac

line 52: ip link set fbond type bond ad_actor_sys_prio 65535
setting bond param: ad_actor_sys_prio
given:
    params.ad_actor_system = 0
call stack:
    bond_option_ad_actor_sys_prio()
    -> bond_3ad_update_ad_actor_settings()
       -> set ad.system.sys_priority = bond->params.ad_actor_sys_prio
       -> ad.system.sys_mac_addr = bond->dev->dev_addr; because
            params.ad_actor_system == 0
results:
     ad.system.sys_mac_addr = bond->dev->dev_addr

line 60: ip link set veth1-bond down master fbond
given:
    params.ad_actor_system = 0
    params.mode = BOND_MODE_8023AD
    ad.system.sys_mac_addr == bond->dev->dev_addr
call stack:
    bond_enslave
    -> bond_3ad_initialize(); because first slave
       -> if ad.system.sys_mac_addr != bond->dev->dev_addr
          return
results:
     Nothing is run in bond_3ad_initialize() because dev_addr equals
     sys_mac_addr leaving the global ad_ticks_per_sec zero as it is
     never initialized anywhere else.

The if check around the contents of bond_3ad_initialize() is no longer
needed due to commit 5ee14e6d336f ("bonding: 3ad: apply ad_actor settings
changes immediately") which sets ad.system.sys_mac_addr if any one of
the bonding parameters whos set function calls
bond_3ad_update_ad_actor_settings(). This is because if
ad.system.sys_mac_addr is zero it will be set to the current bond mac
address, this causes the if check to never be true.

Fixes: 5ee14e6d336f ("bonding: 3ad: apply ad_actor settings changes immediately")
Signed-off-by: Jonathan Toppins <jtoppins@redhat.com>
Acked-by: Jay Vosburgh <jay.vosburgh@canonical.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

selftests: include bonding tests into the kselftest infra

This creates a test collection in drivers/net/bonding for bonding
specific kernel selftests.

The first test is a reproducer that provisions a bond and given the
specific order in how the ip-link(8) commands are issued the bond never
transmits an LACPDU frame on any of its slaves.

Signed-off-by: Jonathan Toppins <jtoppins@redhat.com>
Acked-by: Jay Vosburgh <jay.vosburgh@canonical.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net: moxa: get rid of asymmetry in DMA mapping/unmapping

Since priv->rx_mapping[i] is maped in moxart_mac_open(), we
should unmap it from moxart_mac_stop(). Fixes 2 warnings.

1. During error unwinding in moxart_mac_probe(): "goto init_fail;",
then moxart_mac_free_memory() calls dma_unmap_single() with
priv->rx_mapping[i] pointers zeroed.

WARNING: CPU: 0 PID: 1 at kernel/dma/debug.c:963 check_unmap+0x704/0x980
DMA-API: moxart-ethernet 92000000.mac: device driver tries to free DMA memory it has not allocated [device address=0x0000000000000000] [size=1600 bytes]
CPU: 0 PID: 1 Comm: swapper Not tainted 5.19.0+ #60
Hardware name: Generic DT based system
 unwind_backtrace from show_stack+0x10/0x14
 show_stack from dump_stack_lvl+0x34/0x44
 dump_stack_lvl from __warn+0xbc/0x1f0
 __warn from warn_slowpath_fmt+0x94/0xc8
 warn_slowpath_fmt from check_unmap+0x704/0x980
 check_unmap from debug_dma_unmap_page+0x8c/0x9c
 debug_dma_unmap_page from moxart_mac_free_memory+0x3c/0xa8
 moxart_mac_free_memory from moxart_mac_probe+0x190/0x218
 moxart_mac_probe from platform_probe+0x48/0x88
 platform_probe from really_probe+0xc0/0x2e4

2. After commands:
 ip link set dev eth0 down
 ip link set dev eth0 up

WARNING: CPU: 0 PID: 55 at kernel/dma/debug.c:570 add_dma_entry+0x204/0x2ec
DMA-API: moxart-ethernet 92000000.mac: cacheline tracking EEXIST, overlapping mappings aren't supported
CPU: 0 PID: 55 Comm: ip Not tainted 5.19.0+ #57
Hardware name: Generic DT based system
 unwind_backtrace from show_stack+0x10/0x14
 show_stack from dump_stack_lvl+0x34/0x44
 dump_stack_lvl from __warn+0xbc/0x1f0
 __warn from warn_slowpath_fmt+0x94/0xc8
 warn_slowpath_fmt from add_dma_entry+0x204/0x2ec
 add_dma_entry from dma_map_page_attrs+0x110/0x328
 dma_map_page_attrs from moxart_mac_open+0x134/0x320
 moxart_mac_open from __dev_open+0x11c/0x1ec
 __dev_open from __dev_change_flags+0x194/0x22c
 __dev_change_flags from dev_change_flags+0x14/0x44
 dev_change_flags from devinet_ioctl+0x6d4/0x93c
 devinet_ioctl from inet_ioctl+0x1ac/0x25c

v1 -> v2:
Extraneous change removed.

Fixes: 6c821bd9edc9 ("net: Add MOXA ART SoCs ethernet driver")
Signed-off-by: Sergei Antonov <saproj@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20220819110519.1230877-1-saproj@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net: phy: Don't WARN for PHY_READY state in mdio_bus_phy_resume()

For some MAC drivers, they set the mac_managed_pm to true in its
->ndo_open() callback. So before the mac_managed_pm is set to true,
we still want to leverage the mdio_bus_phy_suspend()/resume() for
the phy device suspend and resume. In this case, the phy device is
in PHY_READY, and we shouldn't warn about this. It also seems that
the check of mac_managed_pm in WARN_ON is redundant since we already
check this in the entry of mdio_bus_phy_resume(), so drop it.

Fixes: 744d23c71af3 ("net: phy: Warn about incorrect mdio_bus_phy_resume() state")
Signed-off-by: Xiaolei Wang <xiaolei.wang@windriver.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20220819082451.1992102-1-xiaolei.wang@windriver.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net: ipa: don't assume SMEM is page-aligned

In ipa_smem_init(), a Qualcomm SMEM region is allocated (if needed)
and then its virtual address is fetched using qcom_smem_get().  The
physical address associated with that region is also fetched.

The physical address is adjusted so that it is page-aligned, and an
attempt is made to update the size of the region to compensate for
any non-zero adjustment.

But that adjustment isn't done properly.  The physical address is
aligned twice, and as a result the size is never actually adjusted.

Fix this by *not* aligning the "addr" local variable, and instead
making the "phys" local variable be the adjusted "addr" value.

Fixes: a0036bb413d5b ("net: ipa: define SMEM memory region for IPA")
Signed-off-by: Alex Elder <elder@linaro.org>
Link: https://lore.kernel.org/r/20220818134206.567618-1-elder@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net: dsa: microchip: keep compatibility with device tree blobs with no phy-mode

DSA has multiple ways of specifying a MAC connection to an internal PHY.
One requires a DT description like this:

port@0 {
reg = <0>;
phy-handle = <&internal_phy>;
phy-mode = "internal";
};

(which is IMO the recommended approach, as it is the clearest
description)

but it is also possible to leave the specification as just:

port@0 {
reg = <0>;
}

and if the driver implements ds->ops->phy_read and ds->ops->phy_write,
the DSA framework "knows" it should create a ds->slave_mii_bus, and it
should connect to a non-OF-based internal PHY on this MDIO bus, at an
MDIO address equal to the port address.

There is also an intermediary way of describing things:

port@0 {
reg = <0>;
phy-handle = <&internal_phy>;
};

In case 2, DSA calls phylink_connect_phy() and in case 3, it calls
phylink_of_phy_connect(). In both cases, phylink_create() has been
called with a phy_interface_t of PHY_INTERFACE_MODE_NA, and in both
cases, PHY_INTERFACE_MODE_NA is translated into phy->interface.

It is important to note that phy_device_create() initializes
dev->interface = PHY_INTERFACE_MODE_GMII, and so, when we use
phylink_create(PHY_INTERFACE_MODE_NA), no one will override this, and we
will end up with a PHY_INTERFACE_MODE_GMII interface inherited from the
PHY.

All this means that in order to maintain compatibility with device tree
blobs where the phy-mode property is missing, we need to allow the
"gmii" phy-mode and treat it as "internal".

Fixes: 2c709e0bdad4 ("net: dsa: microchip: ksz8795: add phylink support")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216320
Reported-by: Craig McQueen <craig@mcqueen.id.au>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Alvin Šipraga <alsi@bang-olufsen.dk>
Tested-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Link: https://lore.kernel.org/r/20220818143250.2797111-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net/mlx5: Unlock on error in mlx5_sriov_enable()

Unlock before returning if mlx5_device_enable_sriov() fails.

Fixes: 84a433a40d0e ("net/mlx5: Lock mlx5 devlink reload callbacks")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

net/mlx5e: Fix use after free in mlx5e_fs_init()

Call mlx5e_fs_vlan_free(fs) before kvfree(fs).

Fixes: af8bbf730068 ("net/mlx5e: Convert mlx5e_flow_steering member of mlx5e_priv to pointer")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

net/mlx5e: kTLS, Use _safe() iterator in mlx5e_tls_priv_tx_list_cleanup()

Use the list_for_each_entry_safe() macro to prevent dereferencing "obj"
after it has been freed.

Fixes: c4dfe704f53f ("net/mlx5e: kTLS, Recycle objects of device-offloaded TLS TX connections")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

net/mlx5: unlock on error path in esw_vfs_changed_event_handler()

Unlock before returning on this error path.

Fixes: f1bc646c9a06 ("net/mlx5: Use devl_ API in mlx5_esw_offloads_devlink_port_register")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

net/mlx5e: Fix wrong tc flag used when set hw-tc-offload off

The cited commit reintroduced the ability to set hw-tc-offload
in switchdev mode by reusing NIC mode calls without modifying it
to support both modes, this can cause an illegal memory access
when trying to turn hw-tc-offload off.

Fix this by using the right TC_FLAG when checking if tc rules
are installed while disabling hw-tc-offload.

Fixes: d3cbd4254df8 ("net/mlx5e: Add ndo_set_feature for uplink representor")
Signed-off-by: Maor Dickman <maord@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

net/mlx5e: TC, Add missing policer validation

There is a missing policer validation when offloading police action
with tc action api. Add it.

Fixes: 7d1a5ce46e47 ("net/mlx5e: TC, Support tc action api for police")
Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Maor Dickman <maord@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

net/mlx5e: Fix wrong application of the LRO state

Driver caches packet merge type in mlx5e_params instance which must be
in perfect sync with the netdev_feature's bit.
Prior to this patch, in certain conditions (*) LRO state was set in
mlx5e_params, while netdev_feature's bit was off. Causing the LRO to
be applied on the RQs (HW level).

(*) This can happen only on profile init (mlx5e_build_nic_params()),
when RQ expect non-linear SKB and PCI is fast enough in comparison to
link width.

Solution: remove setting of packet merge type from
mlx5e_build_nic_params() as netdev features are not updated.

Fixes: 619a8f2a42f1 ("net/mlx5e: Use linear SKB in Striding RQ")
Signed-off-by: Aya Levin <ayal@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

net/mlx5: Avoid false positive lockdep warning by adding lock_class_key

Add a lock_class_key per mlx5 device to avoid a false positive
"possible circular locking dependency" warning by lockdep, on flows
which lock more than one mlx5 device, such as adding SF.

kernel log:
 ======================================================
 WARNING: possible circular locking dependency detected
 5.19.0-rc8+ #2 Not tainted
 ------------------------------------------------------
 kworker/u20:0/8 is trying to acquire lock:
 ffff88812dfe0d98 (&dev->intf_state_mutex){+.+.}-{3:3}, at: mlx5_init_one+0x2e/0x490 [mlx5_core]

 but task is already holding lock:
 ffff888101aa7898 (&(&notifier->n_head)->rwsem){++++}-{3:3}, at: blocking_notifier_call_chain+0x5a/0x130

 which lock already depends on the new lock.

 the existing dependency chain (in reverse order) is:

 -> #1 (&(&notifier->n_head)->rwsem){++++}-{3:3}:
        down_write+0x90/0x150
        blocking_notifier_chain_register+0x53/0xa0
        mlx5_sf_table_init+0x369/0x4a0 [mlx5_core]
        mlx5_init_one+0x261/0x490 [mlx5_core]
        probe_one+0x430/0x680 [mlx5_core]
        local_pci_probe+0xd6/0x170
        work_for_cpu_fn+0x4e/0xa0
        process_one_work+0x7c2/0x1340
        worker_thread+0x6f6/0xec0
        kthread+0x28f/0x330
        ret_from_fork+0x1f/0x30

 -> #0 (&dev->intf_state_mutex){+.+.}-{3:3}:
        __lock_acquire+0x2fc7/0x6720
        lock_acquire+0x1c1/0x550
        __mutex_lock+0x12c/0x14b0
        mlx5_init_one+0x2e/0x490 [mlx5_core]
        mlx5_sf_dev_probe+0x29c/0x370 [mlx5_core]
        auxiliary_bus_probe+0x9d/0xe0
        really_probe+0x1e0/0xaa0
        __driver_probe_device+0x219/0x480
        driver_probe_device+0x49/0x130
        __device_attach_driver+0x1b8/0x280
        bus_for_each_drv+0x123/0x1a0
        __device_attach+0x1a3/0x460
        bus_probe_device+0x1a2/0x260
        device_add+0x9b1/0x1b40
        __auxiliary_device_add+0x88/0xc0
        mlx5_sf_dev_state_change_handler+0x67e/0x9d0 [mlx5_core]
        blocking_notifier_call_chain+0xd5/0x130
        mlx5_vhca_state_work_handler+0x2b0/0x3f0 [mlx5_core]
        process_one_work+0x7c2/0x1340
        worker_thread+0x59d/0xec0
        kthread+0x28f/0x330
        ret_from_fork+0x1f/0x30

  other info that might help us debug this:

  Possible unsafe locking scenario:

        CPU0                    CPU1
        ----                    ----
   lock(&(&notifier->n_head)->rwsem);
                                lock(&dev->intf_state_mutex);
                                lock(&(&notifier->n_head)->rwsem);
   lock(&dev->intf_state_mutex);

  *** DEADLOCK ***

 4 locks held by kworker/u20:0/8:
  #0: ffff888150612938 ((wq_completion)mlx5_events){+.+.}-{0:0}, at: process_one_work+0x6e2/0x1340
  #1: ffff888100cafdb8 ((work_completion)(&work->work)#3){+.+.}-{0:0}, at: process_one_work+0x70f/0x1340
  #2: ffff888101aa7898 (&(&notifier->n_head)->rwsem){++++}-{3:3}, at: blocking_notifier_call_chain+0x5a/0x130
  #3: ffff88813682d0e8 (&dev->mutex){....}-{3:3}, at:__device_attach+0x76/0x460

 stack backtrace:
 CPU: 6 PID: 8 Comm: kworker/u20:0 Not tainted 5.19.0-rc8+
 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014
 Workqueue: mlx5_events mlx5_vhca_state_work_handler [mlx5_core]
 Call Trace:
  <TASK>
  dump_stack_lvl+0x57/0x7d
  check_noncircular+0x278/0x300
  ? print_circular_bug+0x460/0x460
  ? lock_chain_count+0x20/0x20
  ? register_lock_class+0x1880/0x1880
  __lock_acquire+0x2fc7/0x6720
  ? register_lock_class+0x1880/0x1880
  ? register_lock_class+0x1880/0x1880
  lock_acquire+0x1c1/0x550
  ? mlx5_init_one+0x2e/0x490 [mlx5_core]
  ? lockdep_hardirqs_on_prepare+0x400/0x400
  __mutex_lock+0x12c/0x14b0
  ? mlx5_init_one+0x2e/0x490 [mlx5_core]
  ? mlx5_init_one+0x2e/0x490 [mlx5_core]
  ? _raw_read_unlock+0x1f/0x30
  ? mutex_lock_io_nested+0x1320/0x1320
  ? __ioremap_caller.constprop.0+0x306/0x490
  ? mlx5_sf_dev_probe+0x269/0x370 [mlx5_core]
  ? iounmap+0x160/0x160
  mlx5_init_one+0x2e/0x490 [mlx5_core]
  mlx5_sf_dev_probe+0x29c/0x370 [mlx5_core]
  ? mlx5_sf_dev_remove+0x130/0x130 [mlx5_core]
  auxiliary_bus_probe+0x9d/0xe0
  really_probe+0x1e0/0xaa0
  __driver_probe_device+0x219/0x480
  ? auxiliary_match_id+0xe9/0x140
  driver_probe_device+0x49/0x130
  __device_attach_driver+0x1b8/0x280
  ? driver_allows_async_probing+0x140/0x140
  bus_for_each_drv+0x123/0x1a0
  ? bus_for_each_dev+0x1a0/0x1a0
  ? lockdep_hardirqs_on_prepare+0x286/0x400
  ? trace_hardirqs_on+0x2d/0x100
  __device_attach+0x1a3/0x460
  ? device_driver_attach+0x1e0/0x1e0
  ? kobject_uevent_env+0x22d/0xf10
  bus_probe_device+0x1a2/0x260
  device_add+0x9b1/0x1b40
  ? dev_set_name+0xab/0xe0
  ? __fw_devlink_link_to_suppliers+0x260/0x260
  ? memset+0x20/0x40
  ? lockdep_init_map_type+0x21a/0x7d0
  __auxiliary_device_add+0x88/0xc0
  ? auxiliary_device_init+0x86/0xa0
  mlx5_sf_dev_state_change_handler+0x67e/0x9d0 [mlx5_core]
  blocking_notifier_call_chain+0xd5/0x130
  mlx5_vhca_state_work_handler+0x2b0/0x3f0 [mlx5_core]
  ? mlx5_vhca_event_arm+0x100/0x100 [mlx5_core]
  ? lock_downgrade+0x6e0/0x6e0
  ? lockdep_hardirqs_on_prepare+0x286/0x400
  process_one_work+0x7c2/0x1340
  ? lockdep_hardirqs_on_prepare+0x400/0x400
  ? pwq_dec_nr_in_flight+0x230/0x230
  ? rwlock_bug.part.0+0x90/0x90
  worker_thread+0x59d/0xec0
  ? process_one_work+0x1340/0x1340
  kthread+0x28f/0x330
  ? kthread_complete_and_exit+0x20/0x20
  ret_from_fork+0x1f/0x30
  </TASK>

Fixes: 6a3273217469 ("net/mlx5: SF, Port function state change support")
Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Shay Drory <shayd@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

net/mlx5: Fix cmd error logging for manage pages cmd

When the driver unloads, give/reclaim_pages may fail as PF driver in
teardown flow, current code will lead to the following kernel log print
'failed reclaiming pages: err 0'.

Fix it to get same behavior as before the cited commits,
by calling mlx5_cmd_check before handling error state.
mlx5_cmd_check will verify if the returned error is an actual error
needed to be handled by the driver or not and will return an
appropriate value.

Fixes: 8d564292a166 ("net/mlx5: Remove redundant error on reclaim pages")
Fixes: 4dac2f10ada0 ("net/mlx5: Remove redundant notify fail on give pages")
Signed-off-by: Roy Novich <royno@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

net/mlx5: Disable irq when locking lag_lock

The lag_lock is taken from both process and softirq contexts which results
lockdep warning[0] about potential deadlock. However, just disabling
softirqs by using *_bh spinlock API is not enough since it will cause
warning in some contexts where the lock is obtained with hard irqs
disabled. To fix the issue save current irq state, disable them before
obtaining the lock an re-enable irqs from saved state after releasing it.

[0]:

[Sun Aug  7 13:12:29 2022] ================================
[Sun Aug  7 13:12:29 2022] WARNING: inconsistent lock state
[Sun Aug  7 13:12:29 2022] 5.19.0_for_upstream_debug_2022_08_04_16_06 #1 Not tainted
[Sun Aug  7 13:12:29 2022] --------------------------------
[Sun Aug  7 13:12:29 2022] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
[Sun Aug  7 13:12:29 2022] swapper/0/0 [HC0[0]:SC1[1]:HE1:SE0] takes:
[Sun Aug  7 13:12:29 2022] ffffffffa06dc0d8 (lag_lock){+.?.}-{2:2}, at: mlx5_lag_is_shared_fdb+0x1f/0x120 [mlx5_core]
[Sun Aug  7 13:12:29 2022] {SOFTIRQ-ON-W} state was registered at:
[Sun Aug  7 13:12:29 2022]   lock_acquire+0x1c1/0x550
[Sun Aug  7 13:12:29 2022]   _raw_spin_lock+0x2c/0x40
[Sun Aug  7 13:12:29 2022]   mlx5_lag_add_netdev+0x13b/0x480 [mlx5_core]
[Sun Aug  7 13:12:29 2022]   mlx5e_nic_enable+0x114/0x470 [mlx5_core]
[Sun Aug  7 13:12:29 2022]   mlx5e_attach_netdev+0x30e/0x6a0 [mlx5_core]
[Sun Aug  7 13:12:29 2022]   mlx5e_resume+0x105/0x160 [mlx5_core]
[Sun Aug  7 13:12:29 2022]   mlx5e_probe+0xac3/0x14f0 [mlx5_core]
[Sun Aug  7 13:12:29 2022]   auxiliary_bus_probe+0x9d/0xe0
[Sun Aug  7 13:12:29 2022]   really_probe+0x1e0/0xaa0
[Sun Aug  7 13:12:29 2022]   __driver_probe_device+0x219/0x480
[Sun Aug  7 13:12:29 2022]   driver_probe_device+0x49/0x130
[Sun Aug  7 13:12:29 2022]   __driver_attach+0x1e4/0x4d0
[Sun Aug  7 13:12:29 2022]   bus_for_each_dev+0x11e/0x1a0
[Sun Aug  7 13:12:29 2022]   bus_add_driver+0x3f4/0x5a0
[Sun Aug  7 13:12:29 2022]   driver_register+0x20f/0x390
[Sun Aug  7 13:12:29 2022]   __auxiliary_driver_register+0x14e/0x260
[Sun Aug  7 13:12:29 2022]   mlx5e_init+0x38/0x90 [mlx5_core]
[Sun Aug  7 13:12:29 2022]   vhost_iotlb_itree_augment_rotate+0xcb/0x180 [vhost_iotlb]
[Sun Aug  7 13:12:29 2022]   do_one_initcall+0xc4/0x400
[Sun Aug  7 13:12:29 2022]   do_init_module+0x18a/0x620
[Sun Aug  7 13:12:29 2022]   load_module+0x563a/0x7040
[Sun Aug  7 13:12:29 2022]   __do_sys_finit_module+0x122/0x1d0
[Sun Aug  7 13:12:29 2022]   do_syscall_64+0x3d/0x90
[Sun Aug  7 13:12:29 2022]   entry_SYSCALL_64_after_hwframe+0x46/0xb0
[Sun Aug  7 13:12:29 2022] irq event stamp: 3596508
[Sun Aug  7 13:12:29 2022] hardirqs last  enabled at (3596508): [<ffffffff813687c2>] __local_bh_enable_ip+0xa2/0x100
[Sun Aug  7 13:12:29 2022] hardirqs last disabled at (3596507): [<ffffffff813687da>] __local_bh_enable_ip+0xba/0x100
[Sun Aug  7 13:12:29 2022] softirqs last  enabled at (3596488): [<ffffffff81368a2a>] irq_exit_rcu+0x11a/0x170
[Sun Aug  7 13:12:29 2022] softirqs last disabled at (3596495): [<ffffffff81368a2a>] irq_exit_rcu+0x11a/0x170
[Sun Aug  7 13:12:29 2022]
                           other info that might help us debug this:
[Sun Aug  7 13:12:29 2022]  Possible unsafe locking scenario:

[Sun Aug  7 13:12:29 2022]        CPU0
[Sun Aug  7 13:12:29 2022]        ----
[Sun Aug  7 13:12:29 2022]   lock(lag_lock);
[Sun Aug  7 13:12:29 2022]   <Interrupt>
[Sun Aug  7 13:12:29 2022]     lock(lag_lock);
[Sun Aug  7 13:12:29 2022]
                            *** DEADLOCK ***

[Sun Aug  7 13:12:29 2022] 4 locks held by swapper/0/0:
[Sun Aug  7 13:12:29 2022]  #0: ffffffff84643260 (rcu_read_lock){....}-{1:2}, at: mlx5e_napi_poll+0x43/0x20a0 [mlx5_core]
[Sun Aug  7 13:12:29 2022]  #1: ffffffff84643260 (rcu_read_lock){....}-{1:2}, at: netif_receive_skb_list_internal+0x2d7/0xd60
[Sun Aug  7 13:12:29 2022]  #2: ffff888144a18b58 (&br->hash_lock){+.-.}-{2:2}, at: br_fdb_update+0x301/0x570
[Sun Aug  7 13:12:29 2022]  #3: ffffffff84643260 (rcu_read_lock){....}-{1:2}, at: atomic_notifier_call_chain+0x5/0x1d0
[Sun Aug  7 13:12:29 2022]
                           stack backtrace:
[Sun Aug  7 13:12:29 2022] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.19.0_for_upstream_debug_2022_08_04_16_06 #1
[Sun Aug  7 13:12:29 2022] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014
[Sun Aug  7 13:12:29 2022] Call Trace:
[Sun Aug  7 13:12:29 2022]  <IRQ>
[Sun Aug  7 13:12:29 2022]  dump_stack_lvl+0x57/0x7d
[Sun Aug  7 13:12:29 2022]  mark_lock.part.0.cold+0x5f/0x92
[Sun Aug  7 13:12:29 2022]  ? lock_chain_count+0x20/0x20
[Sun Aug  7 13:12:29 2022]  ? unwind_next_frame+0x1c4/0x1b50
[Sun Aug  7 13:12:29 2022]  ? secondary_startup_64_no_verify+0xcd/0xdb
[Sun Aug  7 13:12:29 2022]  ? mlx5e_napi_poll+0x4e9/0x20a0 [mlx5_core]
[Sun Aug  7 13:12:29 2022]  ? mlx5e_napi_poll+0x4e9/0x20a0 [mlx5_core]
[Sun Aug  7 13:12:29 2022]  ? stack_access_ok+0x1d0/0x1d0
[Sun Aug  7 13:12:29 2022]  ? start_kernel+0x3a7/0x3c5
[Sun Aug  7 13:12:29 2022]  __lock_acquire+0x1260/0x6720
[Sun Aug  7 13:12:29 2022]  ? lock_chain_count+0x20/0x20
[Sun Aug  7 13:12:29 2022]  ? lock_chain_count+0x20/0x20
[Sun Aug  7 13:12:29 2022]  ? register_lock_class+0x1880/0x1880
[Sun Aug  7 13:12:29 2022]  ? mark_lock.part.0+0xed/0x3060
[Sun Aug  7 13:12:29 2022]  ? stack_trace_save+0x91/0xc0
[Sun Aug  7 13:12:29 2022]  lock_acquire+0x1c1/0x550
[Sun Aug  7 13:12:29 2022]  ? mlx5_lag_is_shared_fdb+0x1f/0x120 [mlx5_core]
[Sun Aug  7 13:12:29 2022]  ? lockdep_hardirqs_on_prepare+0x400/0x400
[Sun Aug  7 13:12:29 2022]  ? __lock_acquire+0xd6f/0x6720
[Sun Aug  7 13:12:29 2022]  _raw_spin_lock+0x2c/0x40
[Sun Aug  7 13:12:29 2022]  ? mlx5_lag_is_shared_fdb+0x1f/0x120 [mlx5_core]
[Sun Aug  7 13:12:29 2022]  mlx5_lag_is_shared_fdb+0x1f/0x120 [mlx5_core]
[Sun Aug  7 13:12:29 2022]  mlx5_esw_bridge_rep_vport_num_vhca_id_get+0x1a0/0x600 [mlx5_core]
[Sun Aug  7 13:12:29 2022]  ? mlx5_esw_bridge_update_work+0x90/0x90 [mlx5_core]
[Sun Aug  7 13:12:29 2022]  ? lock_acquire+0x1c1/0x550
[Sun Aug  7 13:12:29 2022]  mlx5_esw_bridge_switchdev_event+0x185/0x8f0 [mlx5_core]
[Sun Aug  7 13:12:29 2022]  ? mlx5_esw_bridge_port_obj_attr_set+0x3e0/0x3e0 [mlx5_core]
[Sun Aug  7 13:12:29 2022]  ? check_chain_key+0x24a/0x580
[Sun Aug  7 13:12:29 2022]  atomic_notifier_call_chain+0xd7/0x1d0
[Sun Aug  7 13:12:29 2022]  br_switchdev_fdb_notify+0xea/0x100
[Sun Aug  7 13:12:29 2022]  ? br_switchdev_set_port_flag+0x310/0x310
[Sun Aug  7 13:12:29 2022]  fdb_notify+0x11b/0x150
[Sun Aug  7 13:12:29 2022]  br_fdb_update+0x34c/0x570
[Sun Aug  7 13:12:29 2022]  ? lock_chain_count+0x20/0x20
[Sun Aug  7 13:12:29 2022]  ? br_fdb_add_local+0x50/0x50
[Sun Aug  7 13:12:29 2022]  ? br_allowed_ingress+0x5f/0x1070
[Sun Aug  7 13:12:29 2022]  ? check_chain_key+0x24a/0x580
[Sun Aug  7 13:12:29 2022]  br_handle_frame_finish+0x786/0x18e0
[Sun Aug  7 13:12:29 2022]  ? check_chain_key+0x24a/0x580
[Sun Aug  7 13:12:29 2022]  ? br_handle_local_finish+0x20/0x20
[Sun Aug  7 13:12:29 2022]  ? __lock_acquire+0xd6f/0x6720
[Sun Aug  7 13:12:29 2022]  ? sctp_inet_bind_verify+0x4d/0x190
[Sun Aug  7 13:12:29 2022]  ? xlog_unpack_data+0x2e0/0x310
[Sun Aug  7 13:12:29 2022]  ? br_handle_local_finish+0x20/0x20
[Sun Aug  7 13:12:29 2022]  br_nf_hook_thresh+0x227/0x380 [br_netfilter]
[Sun Aug  7 13:12:29 2022]  ? setup_pre_routing+0x460/0x460 [br_netfilter]
[Sun Aug  7 13:12:29 2022]  ? br_handle_local_finish+0x20/0x20
[Sun Aug  7 13:12:29 2022]  ? br_nf_pre_routing_ipv6+0x48b/0x69c [br_netfilter]
[Sun Aug  7 13:12:29 2022]  br_nf_pre_routing_finish_ipv6+0x5c2/0xbf0 [br_netfilter]
[Sun Aug  7 13:12:29 2022]  ? br_handle_local_finish+0x20/0x20
[Sun Aug  7 13:12:29 2022]  br_nf_pre_routing_ipv6+0x4c6/0x69c [br_netfilter]
[Sun Aug  7 13:12:29 2022]  ? br_validate_ipv6+0x9e0/0x9e0 [br_netfilter]
[Sun Aug  7 13:12:29 2022]  ? br_nf_forward_arp+0xb70/0xb70 [br_netfilter]
[Sun Aug  7 13:12:29 2022]  ? br_nf_pre_routing+0xacf/0x1160 [br_netfilter]
[Sun Aug  7 13:12:29 2022]  br_handle_frame+0x8a9/0x1270
[Sun Aug  7 13:12:29 2022]  ? br_handle_frame_finish+0x18e0/0x18e0
[Sun Aug  7 13:12:29 2022]  ? register_lock_class+0x1880/0x1880
[Sun Aug  7 13:12:29 2022]  ? br_handle_local_finish+0x20/0x20
[Sun Aug  7 13:12:29 2022]  ? bond_handle_frame+0xf9/0xac0 [bonding]
[Sun Aug  7 13:12:29 2022]  ? br_handle_frame_finish+0x18e0/0x18e0
[Sun Aug  7 13:12:29 2022]  __netif_receive_skb_core+0x7c0/0x2c70
[Sun Aug  7 13:12:29 2022]  ? check_chain_key+0x24a/0x580
[Sun Aug  7 13:12:29 2022]  ? generic_xdp_tx+0x5b0/0x5b0
[Sun Aug  7 13:12:29 2022]  ? __lock_acquire+0xd6f/0x6720
[Sun Aug  7 13:12:29 2022]  ? register_lock_class+0x1880/0x1880
[Sun Aug  7 13:12:29 2022]  ? check_chain_key+0x24a/0x580
[Sun Aug  7 13:12:29 2022]  __netif_receive_skb_list_core+0x2d7/0x8a0
[Sun Aug  7 13:12:29 2022]  ? lock_acquire+0x1c1/0x550
[Sun Aug  7 13:12:29 2022]  ? process_backlog+0x960/0x960
[Sun Aug  7 13:12:29 2022]  ? lockdep_hardirqs_on_prepare+0x129/0x400
[Sun Aug  7 13:12:29 2022]  ? kvm_clock_get_cycles+0x14/0x20
[Sun Aug  7 13:12:29 2022]  netif_receive_skb_list_internal+0x5f4/0xd60
[Sun Aug  7 13:12:29 2022]  ? do_xdp_generic+0x150/0x150
[Sun Aug  7 13:12:29 2022]  ? mlx5e_poll_rx_cq+0xf6b/0x2960 [mlx5_core]
[Sun Aug  7 13:12:29 2022]  ? mlx5e_poll_ico_cq+0x3d/0x1590 [mlx5_core]
[Sun Aug  7 13:12:29 2022]  napi_complete_done+0x188/0x710
[Sun Aug  7 13:12:29 2022]  mlx5e_napi_poll+0x4e9/0x20a0 [mlx5_core]
[Sun Aug  7 13:12:29 2022]  ? __queue_work+0x53c/0xeb0
[Sun Aug  7 13:12:29 2022]  __napi_poll+0x9f/0x540
[Sun Aug  7 13:12:29 2022]  net_rx_action+0x420/0xb70
[Sun Aug  7 13:12:29 2022]  ? napi_threaded_poll+0x470/0x470
[Sun Aug  7 13:12:29 2022]  ? __common_interrupt+0x79/0x1a0
[Sun Aug  7 13:12:29 2022]  __do_softirq+0x271/0x92c
[Sun Aug  7 13:12:29 2022]  irq_exit_rcu+0x11a/0x170
[Sun Aug  7 13:12:29 2022]  common_interrupt+0x7d/0xa0
[Sun Aug  7 13:12:29 2022]  </IRQ>
[Sun Aug  7 13:12:29 2022]  <TASK>
[Sun Aug  7 13:12:29 2022]  asm_common_interrupt+0x22/0x40
[Sun Aug  7 13:12:29 2022] RIP: 0010:default_idle+0x42/0x60
[Sun Aug  7 13:12:29 2022] Code: c1 83 e0 07 48 c1 e9 03 83 c0 03 0f b6 14 11 38 d0 7c 04 84 d2 75 14 8b 05 6b f1 22 02 85 c0 7e 07 0f 00 2d 80 3b 4a 00 fb f4 <c3> 48 c7 c7 e0 07 7e 85 e8 21 bd 40 fe eb de 66 66 2e 0f 1f 84 00
[Sun Aug  7 13:12:29 2022] RSP: 0018:ffffffff84407e18 EFLAGS: 00000242
[Sun Aug  7 13:12:29 2022] RAX: 0000000000000001 RBX: ffffffff84ec4a68 RCX: 1ffffffff0afc0fc
[Sun Aug  7 13:12:29 2022] RDX: 0000000000000004 RSI: 0000000000000000 RDI: ffffffff835b1fac
[Sun Aug  7 13:12:29 2022] RBP: 0000000000000000 R08: 0000000000000001 R09: ffff8884d2c44ac3
[Sun Aug  7 13:12:29 2022] R10: ffffed109a588958 R11: 00000000ffffffff R12: 0000000000000000
[Sun Aug  7 13:12:29 2022] R13: ffffffff84efac20 R14: 0000000000000000 R15: dffffc0000000000
[Sun Aug  7 13:12:29 2022]  ? default_idle_call+0xcc/0x460
[Sun Aug  7 13:12:29 2022]  default_idle_call+0xec/0x460
[Sun Aug  7 13:12:29 2022]  do_idle+0x394/0x450
[Sun Aug  7 13:12:29 2022]  ? arch_cpu_idle_exit+0x40/0x40
[Sun Aug  7 13:12:29 2022]  cpu_startup_entry+0x19/0x20
[Sun Aug  7 13:12:29 2022]  rest_init+0x156/0x250
[Sun Aug  7 13:12:29 2022]  arch_call_rest_init+0xf/0x15
[Sun Aug  7 13:12:29 2022]  start_kernel+0x3a7/0x3c5
[Sun Aug  7 13:12:29 2022]  secondary_startup_64_no_verify+0xcd/0xdb
[Sun Aug  7 13:12:29 2022]  </TASK>

Fixes: ff9b7521468b ("net/mlx5: Bridge, support LAG")
Signed-off-by: Vlad Buslov <vladbu@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

net/mlx5: Eswitch, Fix forwarding decision to uplink

Make sure to modify the rule for uplink forwarding only for the case
where destination vport number is MLX5_VPORT_UPLINK.

Fixes: 94db33177819 ("net/mlx5: Support multiport eswitch mode")
Signed-off-by: Eli Cohen <elic@nvidia.com>
Reviewed-by: Maor Dickman <maord@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

net/mlx5: LAG, fix logic over MLX5_LAG_FLAG_NDEVS_READY

Only set MLX5_LAG_FLAG_NDEVS_READY if both netdevices are registered.
Doing so guarantees that both ldev->pf[MLX5_LAG_P0].dev and
ldev->pf[MLX5_LAG_P1].dev have valid pointers when
MLX5_LAG_FLAG_NDEVS_READY is set.

The core issue is asymmetry in setting MLX5_LAG_FLAG_NDEVS_READY and
clearing it. Setting it is done wrongly when both
ldev->pf[MLX5_LAG_P0].dev and ldev->pf[MLX5_LAG_P1].dev are set;
clearing it is done right when either of ldev->pf[i].netdev is cleared.

Consider the following scenario:
1. PF0 loads and sets ldev->pf[MLX5_LAG_P0].dev to a valid pointer
2. PF1 loads and sets both ldev->pf[MLX5_LAG_P1].dev and
   ldev->pf[MLX5_LAG_P1].netdev with valid pointers. This results in
   MLX5_LAG_FLAG_NDEVS_READY is set.
3. PF0 is unloaded before setting dev->pf[MLX5_LAG_P0].netdev.
   MLX5_LAG_FLAG_NDEVS_READY remains set.

Further execution of mlx5_do_bond() will result in null pointer
dereference when calling mlx5_lag_is_multipath()

This patch fixes the following call trace actually encountered:

[ 1293.475195] BUG: kernel NULL pointer dereference, address: 00000000000009a8
[ 1293.478756] #PF: supervisor read access in kernel mode
[ 1293.481320] #PF: error_code(0x0000) - not-present page
[ 1293.483686] PGD 0 P4D 0
[ 1293.484434] Oops: 0000 [#1] SMP PTI
[ 1293.485377] CPU: 1 PID: 23690 Comm: kworker/u16:2 Not tainted 5.18.0-rc5_for_upstream_min_debug_2022_05_05_10_13 #1
[ 1293.488039] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014
[ 1293.490836] Workqueue: mlx5_lag mlx5_do_bond_work [mlx5_core]
[ 1293.492448] RIP: 0010:mlx5_lag_is_multipath+0x5/0x50 [mlx5_core]
[ 1293.494044] Code: e8 70 40 ff e0 48 8b 14 24 48 83 05 5c 1a 1b 00 01 e9 19 ff ff ff 48 83 05 47 1a 1b 00 01 eb d7 0f 1f 44 00 00 0f 1f 44 00 00 <48> 8b 87 a8 09 00 00 48 85 c0 74 26 48 83 05 a7 1b 1b 00 01 41 b8
[ 1293.498673] RSP: 0018:ffff88811b2fbe40 EFLAGS: 00010202
[ 1293.500152] RAX: ffff88818a94e1c0 RBX: ffff888165eca6c0 RCX: 0000000000000000
[ 1293.501841] RDX: 0000000000000001 RSI: ffff88818a94e1c0 RDI: 0000000000000000
[ 1293.503585] RBP: 0000000000000000 R08: ffff888119886740 R09: ffff888165eca73c
[ 1293.505286] R10: 0000000000000018 R11: 0000000000000018 R12: ffff88818a94e1c0
[ 1293.506979] R13: ffff888112729800 R14: 0000000000000000 R15: ffff888112729858
[ 1293.508753] FS:  0000000000000000(0000) GS:ffff88852cc40000(0000) knlGS:0000000000000000
[ 1293.510782] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1293.512265] CR2: 00000000000009a8 CR3: 00000001032d4002 CR4: 0000000000370ea0
[ 1293.514001] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1293.515806] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Fixes: 8a66e4585979 ("net/mlx5: Change ownership model for lag")
Signed-off-by: Eli Cohen <elic@nvidia.com>
Reviewed-by: Maor Dickman <maord@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

net/mlx5e: Properly disable vlan strip on non-UL reps

When querying mlx5 non-uplink representors capabilities with ethtool
rx-vlan-offload is marked as "off [fixed]". However, it is actually always
enabled because mlx5e_params->vlan_strip_disable is 0 by default when
initializing struct mlx5e_params instance. Fix the issue by explicitly
setting the vlan_strip_disable to 'true' for non-uplink representors.

Fixes: cb67b832921c ("net/mlx5e: Introduce SRIOV VF representors")
Signed-off-by: Vlad Buslov <vladbu@nvidia.com>
Reviewed-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

ice: xsk: use Rx ring's XDP ring when picking NAPI context

Ice driver allocates per cpu XDP queues so that redirect path can safely
use smp_processor_id() as an index to the array. At the same time
though, XDP rings are used to pick NAPI context to call napi_schedule()
or set NAPIF_STATE_MISSED. When user reduces queue count, say to 8, and
num_possible_cpus() of underlying platform is 44, then this means queue
vectors with correlated NAPI contexts will carry several XDP queues.

This in turn can result in a broken behavior where NAPI context of
interest will never be scheduled and AF_XDP socket will not process any
traffic.

To fix this, let us change the way how XDP rings are assigned to Rx
rings and use this information later on when setting
ice_tx_ring::xsk_pool pointer. For each Rx ring, grab the associated
queue vector and walk through Tx ring's linked list. Once we stumble
upon XDP ring in it, assign this ring to ice_rx_ring::xdp_ring.

Previous [0] approach of fixing this issue was for txonly scenario
because of the described grouping of XDP rings across queue vectors. So,
relying on Rx ring meant that NAPI context could be scheduled with a
queue vector without XDP ring with associated XSK pool.

[0]: https://lore.kernel.org/netdev/20220707161128.54215-1-maciej.fijalkowski@intel.com/

Fixes: 2d4238f55697 ("ice: Add support for AF_XDP")
Fixes: 22bf877e528f ("ice: introduce XDP_TX fallback path")
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Tested-by: George Kuruvinakunnel <george.kuruvinakunnel@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

ice: xsk: prohibit usage of non-balanced queue id

Fix the following scenario:
1. ethtool -L $IFACE rx 8 tx 96
2. xdpsock -q 10 -t -z

Above refers to a case where user would like to attach XSK socket in
txonly mode at a queue id that does not have a corresponding Rx queue.
At this moment ice's XSK logic is tightly bound to act on a "queue pair",
e.g. both Tx and Rx queues at a given queue id are disabled/enabled and
both of them will get XSK pool assigned, which is broken for the presented
queue configuration. This results in the splat included at the bottom,
which is basically an OOB access to Rx ring array.

To fix this, allow using the ids only in scope of "combined" queues
reported by ethtool. However, logic should be rewritten to allow such
configurations later on, which would end up as a complete rewrite of the
control path, so let us go with this temporary fix.

[420160.558008] BUG: kernel NULL pointer dereference, address: 0000000000000082
[420160.566359] #PF: supervisor read access in kernel mode
[420160.572657] #PF: error_code(0x0000) - not-present page
[420160.579002] PGD 0 P4D 0
[420160.582756] Oops: 0000 [#1] PREEMPT SMP NOPTI
[420160.588396] CPU: 10 PID: 21232 Comm: xdpsock Tainted: G           OE     5.19.0-rc7+ #10
[420160.597893] Hardware name: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.02.01.0008.031920191559 03/19/2019
[420160.609894] RIP: 0010:ice_xsk_pool_setup+0x44/0x7d0 [ice]
[420160.616968] Code: f3 48 83 ec 40 48 8b 4f 20 48 8b 3f 65 48 8b 04 25 28 00 00 00 48 89 44 24 38 31 c0 48 8d 04 ed 00 00 00 00 48 01 c1 48 8b 11 <0f> b7 92 82 00 00 00 48 85 d2 0f 84 2d 75 00 00 48 8d 72 ff 48 85
[420160.639421] RSP: 0018:ffffc9002d2afd48 EFLAGS: 00010282
[420160.646650] RAX: 0000000000000050 RBX: ffff88811d8bdd00 RCX: ffff888112c14ff8
[420160.655893] RDX: 0000000000000000 RSI: ffff88811d8bdd00 RDI: ffff888109861000
[420160.665166] RBP: 000000000000000a R08: 000000000000000a R09: 0000000000000000
[420160.674493] R10: 000000000000889f R11: 0000000000000000 R12: 000000000000000a
[420160.683833] R13: 000000000000000a R14: 0000000000000000 R15: ffff888117611828
[420160.693211] FS:  00007fa869fc1f80(0000) GS:ffff8897e0880000(0000) knlGS:0000000000000000
[420160.703645] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[420160.711783] CR2: 0000000000000082 CR3: 00000001d076c001 CR4: 00000000007706e0
[420160.721399] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[420160.731045] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[420160.740707] PKRU: 55555554
[420160.745960] Call Trace:
[420160.750962]  <TASK>
[420160.755597]  ? kmalloc_large_node+0x79/0x90
[420160.762703]  ? __kmalloc_node+0x3f5/0x4b0
[420160.769341]  xp_assign_dev+0xfd/0x210
[420160.775661]  ? shmem_file_read_iter+0x29a/0x420
[420160.782896]  xsk_bind+0x152/0x490
[420160.788943]  __sys_bind+0xd0/0x100
[420160.795097]  ? exit_to_user_mode_prepare+0x20/0x120
[420160.802801]  __x64_sys_bind+0x16/0x20
[420160.809298]  do_syscall_64+0x38/0x90
[420160.815741]  entry_SYSCALL_64_after_hwframe+0x63/0xcd
[420160.823731] RIP: 0033:0x7fa86a0dd2fb
[420160.830264] Code: c3 66 0f 1f 44 00 00 48 8b 15 69 8b 0c 00 f7 d8 64 89 02 b8 ff ff ff ff eb bc 0f 1f 44 00 00 f3 0f 1e fa b8 31 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 3d 8b 0c 00 f7 d8 64 89 01 48
[420160.855410] RSP: 002b:00007ffc1146f618 EFLAGS: 00000246 ORIG_RAX: 0000000000000031
[420160.866366] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa86a0dd2fb
[420160.876957] RDX: 0000000000000010 RSI: 00007ffc1146f680 RDI: 0000000000000003
[420160.887604] RBP: 000055d7113a0520 R08: 00007fa868fb8000 R09: 0000000080000000
[420160.898293] R10: 0000000000008001 R11: 0000000000000246 R12: 000055d7113a04e0
[420160.909038] R13: 000055d7113a0320 R14: 000000000000000a R15: 0000000000000000
[420160.919817]  </TASK>
[420160.925659] Modules linked in: ice(OE) af_packet binfmt_misc nls_iso8859_1 ipmi_ssif intel_rapl_msr intel_rapl_common x86_pkg_temp_thermal intel_powerclamp mei_me coretemp ioatdma mei ipmi_si wmi ipmi_msghandler acpi_pad acpi_power_meter ip_tables x_tables autofs4 ixgbe i40e crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel crypto_simd cryptd ahci mdio dca libahci lpc_ich [last unloaded: ice]
[420160.977576] CR2: 0000000000000082
[420160.985037] ---[ end trace 0000000000000000 ]---
[420161.097724] RIP: 0010:ice_xsk_pool_setup+0x44/0x7d0 [ice]
[420161.107341] Code: f3 48 83 ec 40 48 8b 4f 20 48 8b 3f 65 48 8b 04 25 28 00 00 00 48 89 44 24 38 31 c0 48 8d 04 ed 00 00 00 00 48 01 c1 48 8b 11 <0f> b7 92 82 00 00 00 48 85 d2 0f 84 2d 75 00 00 48 8d 72 ff 48 85
[420161.134741] RSP: 0018:ffffc9002d2afd48 EFLAGS: 00010282
[420161.144274] RAX: 0000000000000050 RBX: ffff88811d8bdd00 RCX: ffff888112c14ff8
[420161.155690] RDX: 0000000000000000 RSI: ffff88811d8bdd00 RDI: ffff888109861000
[420161.168088] RBP: 000000000000000a R08: 000000000000000a R09: 0000000000000000
[420161.179295] R10: 000000000000889f R11: 0000000000000000 R12: 000000000000000a
[420161.190420] R13: 000000000000000a R14: 0000000000000000 R15: ffff888117611828
[420161.201505] FS:  00007fa869fc1f80(0000) GS:ffff8897e0880000(0000) knlGS:0000000000000000
[420161.213628] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[420161.223413] CR2: 0000000000000082 CR3: 00000001d076c001 CR4: 00000000007706e0
[420161.234653] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[420161.245893] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[420161.257052] PKRU: 55555554

Fixes: 2d4238f55697 ("ice: Add support for AF_XDP")
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Tested-by: George Kuruvinakunnel <george.kuruvinakunnel@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

nfc: pn533: Fix use-after-free bugs caused by pn532_cmd_timeout

When the pn532 uart device is detaching, the pn532_uart_remove()
is called. But there are no functions in pn532_uart_remove() that
could delete the cmd_timeout timer, which will cause use-after-free
bugs. The process is shown below:

    (thread 1)                  |        (thread 2)
                                |  pn532_uart_send_frame
pn532_uart_remove               |    mod_timer(&pn532->cmd_timeout,...)
  ...                           |    (wait a time)
  kfree(pn532) //FREE           |    pn532_cmd_timeout
                                |      pn532_uart_send_frame
                                |        pn532->... //USE

This patch adds del_timer_sync() in pn532_uart_remove() in order to
prevent the use-after-free bugs. What's more, the pn53x_unregister_nfc()
is well synchronized, it sets nfc_dev->shutting_down to true and there
are no syscalls could restart the cmd_timeout timer.

Fixes: c656aa4c27b1 ("nfc: pn533: add UART phy driver")
Signed-off-by: Duoming Zhou <duoming@zju.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>

Merge branch 'r8152-fixes'

Hayes Wang says:

====================
r8152: fix flow control settings

These patches fix the settings of RX FIFO about flow control.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

r8152: fix the RX FIFO settings when suspending

The RX FIFO would be changed when suspending, so the related settings
have to be modified, too. Otherwise, the flow control would work
abnormally.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=216333
Reported-by: Mark Blakeney <mark.blakeney@bullet-systems.net>
Fixes: cdf0b86b250f ("r8152: fix a WOL issue")
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

r8152: fix the units of some registers for RTL8156A

The units of PLA_RX_FIFO_FULL and PLA_RX_FIFO_EMPTY are 16 bytes.

Fixes: 195aae321c82 ("r8152: support new chips")
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

rose: check NULL rose_loopback_neigh->loopback

Commit 3b3fd068c56e3fbea30090859216a368398e39bf added NULL check for
`rose_loopback_neigh->dev` in rose_loopback_timer() but omitted to
check rose_loopback_neigh->loopback.

It thus prevents *all* rose connect.

The reason is that a special rose_neigh loopback has a NULL device.

/proc/net/rose_neigh illustrates it via rose_neigh_show() function :
[...]
seq_printf(seq, "%05d %-9s %-4s   %3d %3d  %3s     %3s %3lu %3lu",
   rose_neigh->number,
   (rose_neigh->loopback) ? "RSLOOP-0" : ax2asc(buf, &rose_neigh->callsign),
   rose_neigh->dev ? rose_neigh->dev->name : "???",
   rose_neigh->count,

/proc/net/rose_neigh displays special rose_loopback_neigh->loopback as
callsign RSLOOP-0:

addr  callsign  dev  count use mode restart  t0  tf digipeaters
00001 RSLOOP-0  ???      1   2  DCE     yes   0   0

By checking rose_loopback_neigh->loopback, rose_rx_call_request() is called
even in case rose_loopback_neigh->dev is NULL. This repairs rose connections.

Verification with rose client application FPAC:

FPAC-Node v 4.1.3 (built Aug  5 2022) for LINUX (help = h)
F6BVP-4 (Commands = ?) : u
Users - AX.25 Level 2 sessions :
Port   Callsign     Callsign  AX.25 state  ROSE state  NetRom status
axudp  F6BVP-5   -> F6BVP-9   Connected    Connected   ---------

Fixes: 3b3fd068c56e ("rose: Fix Null pointer dereference in rose_send_frame()")
Signed-off-by: Bernard Pidoux <f6bvp@free.fr>
Suggested-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Thomas DL9SAU Osterried <thomas@osterried.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

Revert "net: macsec: update SCI upon MAC address change."

This reverts commit 6fc498bc82929ee23aa2f35a828c6178dfd3f823.

Commit 6fc498bc8292 states:

    SCI should be updated, because it contains MAC in its first 6
    octets.

That's not entirely correct. The SCI can be based on the MAC address,
but doesn't have to be. We can also use any 64-bit number as the
SCI. When the SCI based on the MAC address, it uses a 16-bit "port
number" provided by userspace, which commit 6fc498bc8292 overwrites
with 1.

In addition, changing the SCI after macsec has been setup can just
confuse the receiver. If we configure the RXSC on the peer based on
the original SCI, we should keep the same SCI on TX.

When the macsec device is being managed by a userspace key negotiation
daemon such as wpa_supplicant, commit 6fc498bc8292 would also
overwrite the SCI defined by userspace.

Fixes: 6fc498bc8292 ("net: macsec: update SCI upon MAC address change.")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Link: https://lore.kernel.org/r/9b1a9d28327e7eb54550a92eebda45d25e54dd0d.1660667033.git.sd@queasysnail.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net: dpaa: Fix <1G ethernet on LS1046ARDB

As discussed in commit 73a21fa817f0 ("dpaa_eth: support all modes with
rate adapting PHYs"), we must add a workaround for Aquantia phys with
in-tree support in order to keep 1G support working. Update this
workaround for the AQR113C phy found on revision C LS1046ARDB boards.

Fixes: 12cf1b89a668 ("net: phy: Add support for AQR113C EPHY")
Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Acked-by: Camelia Groza <camelia.groza@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20220818164029.2063293-1-sean.anderson@seco.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Merge tag 'net-6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from netfilter.

  Current release - regressions:

   - tcp: fix cleanup and leaks in tcp_read_skb() (the new way BPF
     socket maps get data out of the TCP stack)

   - tls: rx: react to strparser initialization errors

   - netfilter: nf_tables: fix scheduling-while-atomic splat

   - net: fix suspicious RCU usage in bpf_sk_reuseport_detach()

  Current release - new code bugs:

   - mlxsw: ptp: fix a couple of races, static checker warnings and
     error handling

  Previous releases - regressions:

   - netfilter:
      - nf_tables: fix possible module reference underflow in error path
      - make conntrack helpers deal with BIG TCP (skbs > 64kB)
      - nfnetlink: re-enable conntrack expectation events

   - net: fix potential refcount leak in ndisc_router_discovery()

  Previous releases - always broken:

   - sched: cls_route: disallow handle of 0

   - neigh: fix possible local DoS due to net iface start/stop loop

   - rtnetlink: fix module refcount leak in rtnetlink_rcv_msg

   - sched: fix adding qlen to qcpu->backlog in gnet_stats_add_queue_cpu

   - virtio_net: fix endian-ness for RSS

   - dsa: mv88e6060: prevent crash on an unused port

   - fec: fix timer capture timing in `fec_ptp_enable_pps()`

   - ocelot: stats: fix races, integer wrapping and reading incorrect
     registers (the change of register definitions here accounts for
     bulk of the changed LoC in this PR)"

* tag 'net-6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (77 commits)
  net: moxa: MAC address reading, generating, validity checking
  tcp: handle pure FIN case correctly
  tcp: refactor tcp_read_skb() a bit
  tcp: fix tcp_cleanup_rbuf() for tcp_read_skb()
  tcp: fix sock skb accounting in tcp_read_skb()
  igb: Add lock to avoid data race
  dt-bindings: Fix incorrect "the the" corrections
  net: genl: fix error path memory leak in policy dumping
  stmmac: intel: Add a missing clk_disable_unprepare() call in intel_eth_pci_remove()
  net: ethernet: mtk_eth_soc: fix possible NULL pointer dereference in mtk_xdp_run
  net/mlx5e: Allocate flow steering storage during uplink initialization
  net: mscc: ocelot: report ndo_get_stats64 from the wraparound-resistant ocelot->stats
  net: mscc: ocelot: keep ocelot_stat_layout by reg address, not offset
  net: mscc: ocelot: make struct ocelot_stat_layout array indexable
  net: mscc: ocelot: fix race between ndo_get_stats64 and ocelot_check_stats_work
  net: mscc: ocelot: turn stats_lock into a spinlock
  net: mscc: ocelot: fix address of SYS_COUNT_TX_AGING counter
  net: mscc: ocelot: fix incorrect ndo_get_stats64 packet counters
  net: dsa: felix: fix ethtool 256-511 and 512-1023 TX packet counters
  net: dsa: don't warn in dsa_port_set_state_now() when driver doesn't support it
  ...

Merge tag 'linux-kselftest-next-6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull Kselftest fix from Shuah Khan:

 - fix landlock test build regression

* tag 'linux-kselftest-next-6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests/landlock: fix broken include of linux/landlock.h

Merge tag 'trace-rtla-v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull rtla tool fixes from Steven Rostedt:
 "Fixes for the Real-Time Linux Analysis tooling:

   - Fix tracer name in comments and prints

   - Fix setting up symlinks

   - Allow extra flags to be set in build

   - Consolidate and show all necessary libraries not found in build
     error"

* tag 'trace-rtla-v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  rtla: Consolidate and show all necessary libraries that failed for building
  tools/rtla: Build with EXTRA_{C,LD}FLAGS
  tools/rtla: Fix command symlinks
  rtla: Fix tracer name

net: moxa: MAC address reading, generating, validity checking

This device does not remember its MAC address, so add a possibility
to get it from the platform. If it fails, generate a random address.
This will provide a MAC address early during boot without user space
being involved.

Also remove extra calls to is_valid_ether_addr().

Made after suggestions by Andrew Lunn:
1) Use eth_hw_addr_random() to assign a random MAC address during probe.
2) Remove is_valid_ether_addr() from moxart_mac_open()
3) Add a call to platform_get_ethdev_address() during probe
4) Remove is_valid_ether_addr() from moxart_set_mac_address(). The core does this

v1 -> v2:
Handle EPROBE_DEFER returned from platform_get_ethdev_address().
Move MAC reading code to the beginning of the probe function.

Signed-off-by: Sergei Antonov <saproj@gmail.com>
Suggested-by: Andrew Lunn <andrew@lunn.ch>
CC: Yang Yingliang <yangyingliang@huawei.com>
CC: Pavel Skripkin <paskripkin@gmail.com>
CC: Guobin Huang <huangguobin4@huawei.com>
CC: Yang Wei <yang.wei9@zte.com.cn>
CC: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20220818092317.529557-1-saproj@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Merge branch 'tcp-some-bug-fixes-for-tcp_read_skb'

Cong Wang says:

====================
tcp: some bug fixes for tcp_read_skb()

This patchset contains 3 bug fixes and 1 minor refactor patch for
tcp_read_skb(). V1 only had the first patch, as Eric prefers to fix all
of them together, I have to group them together.
====================

Link: https://lore.kernel.org/r/20220817195445.151609-1-xiyou.wangcong@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

tcp: handle pure FIN case correctly

When skb->len==0, the recv_actor() returns 0 too, but we also use 0
for error conditions. This patch amends this by propagating the errors
to tcp_read_skb() so that we can distinguish skb->len==0 case from
error cases.

Fixes: 04919bed948d ("tcp: Introduce tcp_read_skb()")
Reported-by: Eric Dumazet <edumazet@google.com>
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: Jakub Sitnicki <jakub@cloudflare.com>
Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

tcp: refactor tcp_read_skb() a bit

As tcp_read_skb() only reads one skb at a time, the while loop is
unnecessary, we can turn it into an if. This also simplifies the
code logic.

Cc: Eric Dumazet <edumazet@google.com>
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: Jakub Sitnicki <jakub@cloudflare.com>
Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

tcp: fix tcp_cleanup_rbuf() for tcp_read_skb()

tcp_cleanup_rbuf() retrieves the skb from sk_receive_queue, it
assumes the skb is not yet dequeued. This is no longer true for
tcp_read_skb() case where we dequeue the skb first.

Fix this by introducing a helper __tcp_cleanup_rbuf() which does
not require any skb and calling it in tcp_read_skb().

Fixes: 04919bed948d ("tcp: Introduce tcp_read_skb()")
Cc: Eric Dumazet <edumazet@google.com>
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: Jakub Sitnicki <jakub@cloudflare.com>
Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

tcp: fix sock skb accounting in tcp_read_skb()

Before commit 965b57b469a5 ("net: Introduce a new proto_ops
->read_skb()"), skb was not dequeued from receive queue hence
when we close TCP socket skb can be just flushed synchronously.

After this commit, we have to uncharge skb immediately after being
dequeued, otherwise it is still charged in the original sock. And we
still need to retain skb->sk, as eBPF programs may extract sock
information from skb->sk. Therefore, we have to call
skb_set_owner_sk_safe() here.

Fixes: 965b57b469a5 ("net: Introduce a new proto_ops ->read_skb()")
Reported-and-tested-by: syzbot+a0e6f8738b58f7654417@syzkaller.appspotmail.com
Tested-by: Stanislav Fomichev <sdf@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: Jakub Sitnicki <jakub@cloudflare.com>
Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

igb: Add lock to avoid data race

The commit c23d92b80e0b ("igb: Teardown SR-IOV before
unregister_netdev()") places the unregister_netdev() call after the
igb_disable_sriov() call to avoid functionality issue.

However, it introduces several race conditions when detaching a device.
For example, when .remove() is called, the below interleaving leads to
use-after-free.

 (FREE from device detaching)      |   (USE from netdev core)
igb_remove                         |  igb_ndo_get_vf_config
 igb_disable_sriov                 |  vf >= adapter->vfs_allocated_count?
  kfree(adapter->vf_data)          |
  adapter->vfs_allocated_count = 0 |
                                   |    memcpy(... adapter->vf_data[vf]

Moreover, the igb_disable_sriov() also suffers from data race with the
requests from VF driver.

 (FREE from device detaching)      |   (USE from requests)
igb_remove                         |  igb_msix_other
 igb_disable_sriov                 |   igb_msg_task
  kfree(adapter->vf_data)          |    vf < adapter->vfs_allocated_count
  adapter->vfs_allocated_count = 0 |

To this end, this commit first eliminates the data races from netdev
core by using rtnl_lock (similar to commit 719479230893 ("dpaa2-eth: add
MAC/PHY support through phylink")). And then adds a spinlock to
eliminate races from driver requests. (similar to commit 1e53834ce541
("ixgbe: Add locking to prevent panic when setting sriov_numvfs to zero")

Fixes: c23d92b80e0b ("igb: Teardown SR-IOV before unregister_netdev()")
Signed-off-by: Lin Ma <linma@zju.edu.cn>
Tested-by: Konrad Jankowski <konrad0.jankowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://lore.kernel.org/r/20220817184921.735244-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue

Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2022-08-17 (ice)

This series contains updates to ice driver only.

Grzegorz prevents modifications to VLAN 0 when setting VLAN promiscuous
as it will already be set. He also ignores -EEXIST error when attempting
to set promiscuous and ensures promiscuous mode is properly cleared from
the hardware when being removed.

Benjamin ignores additional -EEXIST errors when setting promiscuous mode
since the existing mode is the desired mode.

Sylwester fixes VFs to allow sending of tagged traffic when no VLAN filters
exist.

* '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
  ice: Fix VF not able to send tagged traffic with no VLAN filters
  ice: Ignore error message when setting same promiscuous mode
  ice: Fix clearing of promisc mode with bridge over bond
  ice: Ignore EEXIST when setting promisc mode
  ice: Fix double VLAN error when entering promisc mode
====================

Link: https://lore.kernel.org/r/20220817171329.65285-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

dt-bindings: Fix incorrect "the the" corrections

Lots of double occurrences of "the" were replaced by single occurrences,
but some of them should become "to the" instead.

Fixes: 12e5bde18d7f6ca4 ("dt-bindings: Fix typo in comment")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/c5743c0a1a24b3a8893797b52fed88b99e56b04b.1660755148.git.geert+renesas@glider.be
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net: genl: fix error path memory leak in policy dumping

If construction of the array of policies fails when recording
non-first policy we need to unwind.

netlink_policy_dump_add_policy() itself also needs fixing as
it currently gives up on error without recording the allocated
pointer in the pstate pointer.

Reported-by: syzbot+dc54d9ba8153b216cae0@syzkaller.appspotmail.com
Fixes: 50a896cf2d6f ("genetlink: properly support per-op policy dumping")
Link: https://lore.kernel.org/r/20220816161939.577583-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

stmmac: intel: Add a missing clk_disable_unprepare() call in intel_eth_pci_remove()

Commit 09f012e64e4b ("stmmac: intel: Fix clock handling on error and remove
paths") removed this clk_disable_unprepare()

This was partly revert by commit ac322f86b56c ("net: stmmac: Fix clock
handling on remove path") which removed this clk_disable_unprepare()
because:
"
   While unloading the dwmac-intel driver, clk_disable_unprepare() is
   being called twice in stmmac_dvr_remove() and
   intel_eth_pci_remove(). This causes kernel panic on the second call.
"

However later on, commit 5ec55823438e8 ("net: stmmac: add clocks management
for gmac driver") has updated stmmac_dvr_remove() which do not call
clk_disable_unprepare() anymore.

So this call should now be called from intel_eth_pci_remove().

Fixes: 5ec55823438e8 ("net: stmmac: add clocks management for gmac driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/d7c8c1dadf40df3a7c9e643f76ffadd0ccc1ad1b.1660659689.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

tee: add overflow check in register_shm_helper()

With special lengths supplied by user space, register_shm_helper() has
an integer overflow when calculating the number of pages covered by a
supplied user space memory region.

This causes internal_get_user_pages_fast() a helper function of
pin_user_pages_fast() to do a NULL pointer dereference:

  Unable to handle kernel NULL pointer dereference at virtual address 0000000000000010
  Modules linked in:
  CPU: 1 PID: 173 Comm: optee_example_a Not tainted 5.19.0 #11
  Hardware name: QEMU QEMU Virtual Machine, BIOS 0.0.0 02/06/2015
  pc : internal_get_user_pages_fast+0x474/0xa80
  Call trace:
   internal_get_user_pages_fast+0x474/0xa80
   pin_user_pages_fast+0x24/0x4c
   register_shm_helper+0x194/0x330
   tee_shm_register_user_buf+0x78/0x120
   tee_ioctl+0xd0/0x11a0
   __arm64_sys_ioctl+0xa8/0xec
   invoke_syscall+0x48/0x114

Fix this by adding an an explicit call to access_ok() in
tee_shm_register_user_buf() to catch an invalid user space address
early.

Fixes: 033ddf12bcf5 ("tee: add register user memory")
Cc: stable@vger.kernel.org
Reported-by: Nimish Mishra <neelam.nimish@gmail.com>
Reported-by: Anirban Chakraborty <ch.anirban00727@gmail.com>
Reported-by: Debdeep Mukhopadhyay <debdeep.mukhopadhyay@gmail.com>
Suggested-by: Jerome Forissier <jerome.forissier@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

net: ethernet: mtk_eth_soc: fix possible NULL pointer dereference in mtk_xdp_run

Fix possible NULL pointer dereference in mtk_xdp_run() if the
ebpf program returns XDP_TX and xdp_convert_buff_to_frame routine fails
returning NULL.

Fixes: 5886d26fd25bb ("net: ethernet: mtk_eth_soc: add xmit XDP support")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/627a07d759020356b64473e09f0855960e02db28.1660659112.git.lorenzo@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net/mlx5e: Allocate flow steering storage during uplink initialization

IPsec code relies on valid priv->fs pointer that is the case in NIC
flow, but not correct in uplink. Before commit that mentioned in the
Fixes line, that pointer was valid in all flows as it was allocated
together with priv struct.

In addition, the cleanup representors routine called to that
not-initialized priv->fs pointer and its internals which caused NULL
deference.

So, move FS allocation to be as early as possible.

Fixes: af8bbf730068 ("net/mlx5e: Convert mlx5e_flow_steering member of mlx5e_priv to pointer")
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Link: https://lore.kernel.org/r/ae46fa5bed3c67f937bfdfc0370101278f5422f1.1660639564.git.leonro@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Merge branch 'fixes-for-ocelot-driver-statistics'

Vladimir Oltean says:

====================
Fixes for Ocelot driver statistics

This series contains bug fixes for the ocelot drivers (both switchdev
and DSA). Some concern the counters exposed to ethtool -S, and others to
the counters exposed to ifconfig. I'm aware that the changes are fairly
large, but I wanted to prioritize on a proper approach to addressing the
issues rather than a quick hack.

Some of the noticed problems:
- bad register offsets for some counters
- unhandled concurrency leading to corrupted counters
- unhandled 32-bit wraparound of ifconfig counters

The issues on the ocelot switchdev driver were noticed through code
inspection, I do not have the hardware to test.

This patch set necessarily converts ocelot->stats_lock from a mutex to a
spinlock. I know this affects Colin Foster's development with the SPI
controlled VSC7512. I have other changes prepared for net-next that
convert this back into a mutex (along with other changes in this area).
====================

Link: https://lore.kernel.org/r/20220816135352.1431497-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net: mscc: ocelot: report ndo_get_stats64 from the wraparound-resistant ocelot->stats

Rather than reading the stats64 counters directly from the 32-bit
hardware, it's better to rely on the output produced by the periodic
ocelot_port_update_stats().

It would be even better to call ocelot_port_update_stats() right from
ocelot_get_stats64() to make sure we report the current values rather
than the ones from 2 seconds ago. But we need to export
ocelot_port_update_stats() from the switch lib towards the switchdev
driver for that, and future work will largely undo that.

There are more ocelot-based drivers waiting to be introduced, an example
of which is the SPI-controlled VSC7512. In that driver's case, it will
be impossible to call ocelot_port_update_stats() from ndo_get_stats64
context, since the latter is atomic, and reading the stats over SPI is
sleepable. So the compromise taken here, which will also hold going
forward, is to report 64-bit counters to stats64, which are not 100% up
to date.

Fixes: a556c76adc05 ("net: mscc: Add initial Ocelot switch support")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net: mscc: ocelot: keep ocelot_stat_layout by reg address, not offset

With so many counter addresses recently discovered as being wrong, it is
desirable to at least have a central database of information, rather
than two: one through the SYS_COUNT_* registers (used for
ndo_get_stats64), and the other through the offset field of struct
ocelot_stat_layout elements (used for ethtool -S).

The strategy will be to keep the SYS_COUNT_* definitions as the single
source of truth, but for that we need to expand our current definitions
to cover all registers. Then we need to convert the ocelot region
creation logic, and stats worker, to the read semantics imposed by going
through SYS_COUNT_* absolute register addresses, rather than offsets
of 32-bit words relative to SYS_COUNT_RX_OCTETS (which should have been
SYS_CNT, by the way).

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net: mscc: ocelot: make struct ocelot_stat_layout array indexable

The ocelot counters are 32-bit and require periodic reading, every 2
seconds, by ocelot_port_update_stats(), so that wraparounds are
detected.

Currently, the counters reported by ocelot_get_stats64() come from the
32-bit hardware counters directly, rather than from the 64-bit
accumulated ocelot->stats, and this is a problem for their integrity.

The strategy is to make ocelot_get_stats64() able to cherry-pick
individual stats from ocelot->stats the way in which it currently reads
them out from SYS_COUNT_* registers. But currently it can't, because
ocelot->stats is an opaque u64 array that's used only to feed data into
ethtool -S.

To solve that problem, we need to make ocelot->stats indexable, and
associate each element with an element of struct ocelot_stat_layout used
by ethtool -S.

This makes ocelot_stat_layout a fat (and possibly sparse) array, so we
need to change the way in which we access it. We no longer need
OCELOT_STAT_END as a sentinel, because we know the array's size
(OCELOT_NUM_STATS). We just need to skip the array elements that were
left unpopulated for the switch revision (ocelot, felix, seville).

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net: mscc: ocelot: fix race between ndo_get_stats64 and ocelot_check_stats_work

The 2 methods can run concurrently, and one will change the window of
counters (SYS_STAT_CFG_STAT_VIEW) that the other sees. The fix is
similar to what commit 7fbf6795d127 ("net: mscc: ocelot: fix mutex lock
error during ethtool stats read") has done for ethtool -S.

Fixes: a556c76adc05 ("net: mscc: Add initial Ocelot switch support")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net: mscc: ocelot: turn stats_lock into a spinlock

ocelot_get_stats64() currently runs unlocked and therefore may collide
with ocelot_port_update_stats() which indirectly accesses the same
counters. However, ocelot_get_stats64() runs in atomic context, and we
cannot simply take the sleepable ocelot->stats_lock mutex. We need to
convert it to an atomic spinlock first. Do that as a preparatory change.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net: mscc: ocelot: fix address of SYS_COUNT_TX_AGING counter

This register, used as part of stats->tx_dropped in
ocelot_get_stats64(), has a wrong address. At the address currently
given, there is actually the c_tx_green_prio_6 counter.

Fixes: a556c76adc05 ("net: mscc: Add initial Ocelot switch support")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net: mscc: ocelot: fix incorrect ndo_get_stats64 packet counters

Reading stats using the SYS_COUNT_* register definitions is only used by
ocelot_get_stats64() from the ocelot switchdev driver, however,
currently the bucket definitions are incorrect.

Separately, on both RX and TX, we have the following problems:
- a 256-1023 bucket which actually tracks the 256-511 packets
- the 1024-1526 bucket actually tracks the 512-1023 packets
- the 1527-max bucket actually tracks the 1024-1526 packets

=> nobody tracks the packets from the real 1527-max bucket

Additionally, the RX_PAUSE, RX_CONTROL, RX_LONGS and RX_CLASSIFIED_DROPS
all track the wrong thing. However this doesn't seem to have any
consequence, since ocelot_get_stats64() doesn't use these.

Even though this problem only manifests itself for the switchdev driver,
we cannot split the fix for ocelot and for DSA, since it requires fixing
the bucket definitions from enum ocelot_reg, which makes us necessarily
adapt the structures from felix and seville as well.

Fixes: 84705fc16552 ("net: dsa: felix: introduce support for Seville VSC9953 switch")
Fixes: 56051948773e ("net: dsa: ocelot: add driver for Felix switch family")
Fixes: a556c76adc05 ("net: mscc: Add initial Ocelot switch support")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net: dsa: felix: fix ethtool 256-511 and 512-1023 TX packet counters

What the driver actually reports as 256-511 is in fact 512-1023, and the
TX packets in the 256-511 bucket are not reported. Fix that.

Fixes: 56051948773e ("net: dsa: ocelot: add driver for Felix switch family")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net: dsa: don't warn in dsa_port_set_state_now() when driver doesn't support it

ds->ops->port_stp_state_set() is, like most DSA methods, optional, and
if absent, the port is supposed to remain in the forwarding state (as
standalone). Such is the case with the mv88e6060 driver, which does not
offload the bridge layer. DSA warns that the STP state can't be changed
to FORWARDING as part of dsa_port_enable_rt(), when in fact it should not.

The error message is also not up to modern standards, so take the
opportunity to make it more descriptive.

Fixes: fd3645413197 ("net: dsa: change scope of STP state setter")
Reported-by: Sergei Antonov <saproj@gmail.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Sergei Antonov <saproj@gmail.com>
Link: https://lore.kernel.org/r/20220816201445.1809483-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net: dsa: sja1105: fix buffer overflow in sja1105_setup_devlink_regions()

If an error occurs in dsa_devlink_region_create(), then 'priv->regions'
array will be accessed by negative index '-1'.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Signed-off-by: Rustam Subkhankulov <subkhankulov@ispras.ru>
Fixes: bf425b82059e ("net: dsa: sja1105: expose static config as devlink region")
Link: https://lore.kernel.org/r/20220817003845.389644-1-subkhankulov@ispras.ru
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf

Florian Westphal says:

====================
netfilter: conntrack and nf_tables bug fixes

The following patchset contains netfilter fixes for net.

Broken since 5.19:
  A few ancient connection tracking helpers assume TCP packets cannot
  exceed 64kb in size, but this isn't the case anymore with 5.19 when
  BIG TCP got merged, from myself.

Regressions since 5.19:
  1. 'conntrack -E expect' won't display anything because nfnetlink failed
     to enable events for expectations, only for normal conntrack events.

  2. partially revert change that added resched calls to a function that can
     be in atomic context.  Both broken and fixed up by myself.

Broken for several releases (up to original merge of nf_tables):
  Several fixes for nf_tables control plane, from Pablo.
  This fixes up resource leaks in error paths and adds more sanity
  checks for mutually exclusive attributes/flags.

Kconfig:
  NF_CONNTRACK_PROCFS is very old and doesn't provide all info provided
  via ctnetlink, so it should not default to y. From Geert Uytterhoeven.

Selftests:
  rework nft_flowtable.sh: it frequently indicated failure; the way it
  tried to detect an offload failure did not work reliably.

* git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
  testing: selftests: nft_flowtable.sh: rework test to detect offload failure
  testing: selftests: nft_flowtable.sh: use random netns names
  netfilter: conntrack: NF_CONNTRACK_PROCFS should no longer default to y
  netfilter: nf_tables: check NFT_SET_CONCAT flag if field_count is specified
  netfilter: nf_tables: disallow NFT_SET_ELEM_CATCHALL and NFT_SET_ELEM_INTERVAL_END
  netfilter: nf_tables: NFTA_SET_ELEM_KEY_END requires concat and interval flags
  netfilter: nf_tables: validate NFTA_SET_ELEM_OBJREF based on NFT_SET_OBJECT flag
  netfilter: nf_tables: really skip inactive sets when allocating name
  netfilter: nfnetlink: re-enable conntrack expectation events
  netfilter: nf_tables: fix scheduling-while-atomic splat
  netfilter: nf_ct_irc: cap packet search space to 4k
  netfilter: nf_ct_ftp: prefer skb_linearize
  netfilter: nf_ct_h323: cap packet size at 64k
  netfilter: nf_ct_sane: remove pseudo skb linearization
  netfilter: nf_tables: possible module reference underflow in error path
  netfilter: nf_tables: disallow NFTA_SET_ELEM_KEY_END with NFT_SET_ELEM_INTERVAL_END flag
  netfilter: nf_tables: use READ_ONCE and WRITE_ONCE for shared generation id access
====================

Link: https://lore.kernel.org/r/20220817140015.25843-1-fw@strlen.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net: Fix suspicious RCU usage in bpf_sk_reuseport_detach()

bpf_sk_reuseport_detach() calls __rcu_dereference_sk_user_data_with_flags()
to obtain the value of sk->sk_user_data, but that function is only usable
if the RCU read lock is held, and neither that function nor any of its
callers hold it.

Fix this by adding a new helper, __locked_read_sk_user_data_with_flags()
that checks to see if sk->sk_callback_lock() is held and use that here
instead.

Alternatively, making __rcu_dereference_sk_user_data_with_flags() use
rcu_dereference_checked() might suffice.

Without this, the following warning can be occasionally observed:

=============================
WARNING: suspicious RCU usage
6.0.0-rc1-build2+ #563 Not tainted
-----------------------------
include/net/sock.h:592 suspicious rcu_dereference_check() usage!

other info that might help us debug this:

rcu_scheduler_active = 2, debug_locks = 1
5 locks held by locktest/29873:
 #0: ffff88812734b550 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: __sock_release+0x77/0x121
 #1: ffff88812f5621b0 (sk_lock-AF_INET){+.+.}-{0:0}, at: tcp_close+0x1c/0x70
 #2: ffff88810312f5c8 (&h->lhash2[i].lock){+.+.}-{2:2}, at: inet_unhash+0x76/0x1c0
 #3: ffffffff83768bb8 (reuseport_lock){+...}-{2:2}, at: reuseport_detach_sock+0x18/0xdd
 #4: ffff88812f562438 (clock-AF_INET){++..}-{2:2}, at: bpf_sk_reuseport_detach+0x24/0xa4

stack backtrace:
CPU: 1 PID: 29873 Comm: locktest Not tainted 6.0.0-rc1-build2+ #563
Hardware name: ASUS All Series/H97-PLUS, BIOS 2306 10/09/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x4c/0x5f
 bpf_sk_reuseport_detach+0x6d/0xa4
 reuseport_detach_sock+0x75/0xdd
 inet_unhash+0xa5/0x1c0
 tcp_set_state+0x169/0x20f
 ? lockdep_sock_is_held+0x3a/0x3a
 ? __lock_release.isra.0+0x13e/0x220
 ? reacquire_held_locks+0x1bb/0x1bb
 ? hlock_class+0x31/0x96
 ? mark_lock+0x9e/0x1af
 __tcp_close+0x50/0x4b6
 tcp_close+0x28/0x70
 inet_release+0x8e/0xa7
 __sock_release+0x95/0x121
 sock_close+0x14/0x17
 __fput+0x20f/0x36a
 task_work_run+0xa3/0xcc
 exit_to_user_mode_prepare+0x9c/0x14d
 syscall_exit_to_user_mode+0x18/0x44
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Fixes: cf8c1e967224 ("net: refactor bpf_sk_reuseport_detach()")
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Hawkins Jiawei <yin31149@gmail.com>
Link: https://lore.kernel.org/r/166064248071.3502205.10036394558814861778.stgit@warthog.procyon.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Merge tag 'ntfs3_for_6.0' of https://github.com/Paragon-Software-Group/linux-ntfs3

Pull ntfs3 updates from Konstantin Komarov:

 - implement FALLOC_FL_INSERT_RANGE

 - fix some logic errors

 - fixed xfstests (tested on x86_64): generic/064 generic/213
   generic/300 generic/361 generic/449 generic/485

 - some dead code removed or refactored

* tag 'ntfs3_for_6.0' of https://github.com/Paragon-Software-Group/linux-ntfs3: (39 commits)
  fs/ntfs3: uninitialized variable in ntfs_set_acl_ex()
  fs/ntfs3: Remove unused function wnd_bits
  fs/ntfs3: Make ni_ins_new_attr return error
  fs/ntfs3: Create MFT zone only if length is large enough
  fs/ntfs3: Refactoring attr_insert_range to restore after errors
  fs/ntfs3: Refactoring attr_punch_hole to restore after errors
  fs/ntfs3: Refactoring attr_set_size to restore after errors
  fs/ntfs3: New function ntfs_bad_inode
  fs/ntfs3: Make MFT zone less fragmented
  fs/ntfs3: Check possible errors in run_pack in advance
  fs/ntfs3: Added comments to frecord functions
  fs/ntfs3: Fill duplicate info in ni_add_name
  fs/ntfs3: Make static function attr_load_runs
  fs/ntfs3: Add new argument is_mft to ntfs_mark_rec_free
  fs/ntfs3: Remove unused mi_mark_free
  fs/ntfs3: Fix very fragmented case in attr_punch_hole
  fs/ntfs3: Fix work with fragmented xattr
  fs/ntfs3: Make ntfs_fallocate return -ENOSPC instead of -EFBIG
  fs/ntfs3: extend ni_insert_nonresident to return inserted ATTR_LIST_ENTRY
  fs/ntfs3: Check reserved size for maximum allowed
  ...

dcache: move the DCACHE_OP_COMPARE case out of the __d_lookup_rcu loop

__d_lookup_rcu() is one of the hottest functions in the kernel on
certain loads, and it is complicated by filesystems that might want to
have their own name compare function.

We can improve code generation by moving the test of DCACHE_OP_COMPARE
outside the loop, which makes the loop itself much simpler, at the cost
of some code duplication.  But both cases end up being simpler, and the
"native" direct case-sensitive compare particularly so.

Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

net: dsa: microchip: ksz9477: fix fdb_dump last invalid entry

In the ksz9477_fdb_dump function it reads the ALU control register and
exit from the timeout loop if there is valid entry or search is
complete. After exiting the loop, it reads the alu entry and report to
the user space irrespective of entry is valid. It works till the valid
entry. If the loop exited when search is complete, it reads the alu
table. The table returns all ones and it is reported to user space. So
bridge fdb show gives ff:ff:ff:ff:ff:ff as last entry for every port.
To fix it, after exiting the loop the entry is reported only if it is
valid one.

Fixes: b987e98e50ab ("dsa: add DSA switch driver for Microchip KSZ9477")
Signed-off-by: Arun Ramadoss <arun.ramadoss@microchip.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20220816105516.18350-1-arun.ramadoss@microchip.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

ice: Fix VF not able to send tagged traffic with no VLAN filters

VF was not able to send tagged traffic when it didn't
have any VLAN interfaces and VLAN anti-spoofing was enabled.
Fix this by allowing VFs with no VLAN filters to send tagged
traffic. After VF adds a VLAN interface it will be able to
send tagged traffic matching VLAN filters only.

Testing hints:
1. Spawn VF
2. Send tagged packet from a VF
3. The packet should be sent out and not dropped
4. Add a VLAN interface on VF
5. Send tagged packet on that VLAN interface
6. Packet should be sent out and not dropped
7. Send tagged packet with id different than VLAN interface
8. Packet should be dropped

Fixes: daf4dd16438b ("ice: Refactor spoofcheck configuration functions")
Signed-off-by: Sylwester Dziedziuch <sylwesterx.dziedziuch@intel.com>
Signed-off-by: Mateusz Palczewski <mateusz.palczewski@intel.com>
Tested-by: Konrad Jankowski <konrad0.jankowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

ice: Ignore error message when setting same promiscuous mode

Commit 1273f89578f2 ("ice: Fix broken IFF_ALLMULTI handling")
introduced new checks when setting/clearing promiscuous mode. But if the
requested promiscuous mode setting already exists, an -EEXIST error
message would be printed. This is incorrect because promiscuous mode is
either on/off and shouldn't print an error when the requested
configuration is already set.

This can happen when removing a bridge with two bonded interfaces and
promiscuous most isn't fully cleared from VLAN VSI in hardware.

Fix this by ignoring cases where requested promiscuous mode exists.

Fixes: 1273f89578f2 ("ice: Fix broken IFF_ALLMULTI handling")
Signed-off-by: Benjamin Mikailenko <benjamin.mikailenko@intel.com>
Signed-off-by: Grzegorz Siwik <grzegorz.siwik@intel.com>
Link: https://lore.kernel.org/all/CAK8fFZ7m-KR57M_rYX6xZN39K89O=LGooYkKsu6HKt0Bs+x6xQ@mail.gmail.com/
Tested-by: Gurucharan <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

ice: Fix clearing of promisc mode with bridge over bond

When at least two interfaces are bonded and a bridge is enabled on the
bond, an error can occur when the bridge is removed and re-added. The
reason for the error is because promiscuous mode was not fully cleared from
the VLAN VSI in the hardware. With this change, promiscuous mode is
properly removed when the bridge disconnects from bonding.

[ 1033.676359] bond1: link status definitely down for interface enp95s0f0, disabling it
[ 1033.676366] bond1: making interface enp175s0f0 the new active one
[ 1033.676369] device enp95s0f0 left promiscuous mode
[ 1033.676522] device enp175s0f0 entered promiscuous mode
[ 1033.676901] ice 0000:af:00.0 enp175s0f0: Error setting Multicast promiscuous mode on VSI 6
[ 1041.795662] ice 0000:af:00.0 enp175s0f0: Error setting Multicast promiscuous mode on VSI 6
[ 1041.944826] bond1: link status definitely down for interface enp175s0f0, disabling it
[ 1041.944874] device enp175s0f0 left promiscuous mode
[ 1041.944918] bond1: now running without any active interface!

Fixes: c31af68a1b94 ("ice: Add outer_vlan_ops and VSI specific VLAN ops implementations")
Co-developed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Grzegorz Siwik <grzegorz.siwik@intel.com>
Link: https://lore.kernel.org/all/CAK8fFZ7m-KR57M_rYX6xZN39K89O=LGooYkKsu6HKt0Bs+x6xQ@mail.gmail.com/
Tested-by: Jaroslav Pulchart <jaroslav.pulchart@gooddata.com>
Tested-by: Igor Raits <igor@gooddata.com>
Tested-by: Gurucharan <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>