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We do not reset or free up unused buffers when enabling/disabling XDP,
so it can happen that xdp_frames are freed after disabling XDP or
sk_buffs are freed after enabling XDP on xdp tx queues.
Thus we need to handle both forms (xdp_frames and sk_buffs) regardless
of XDP setting.
One way to trigger this problem is to disable XDP when napi_tx is
enabled. In that case, virtnet_xdp_set() calls virtnet_napi_enable()
which kicks NAPI. The NAPI handler will call virtnet_poll_cleantx()
which invokes free_old_xmit_skbs() for queues which have been used by
XDP.
Note that even with this change we need to keep skipping
free_old_xmit_skbs() from NAPI handlers when XDP is enabled, because XDP
tx queues do not aquire queue locks.
- v2: Use napi_consume_skb() instead of dev_consume_skb_any()
Fixes: 4941d472bf95 ("virtio-net: do not reset during XDP set")
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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put_page() can work as a fallback for freeing xdp_frames, but the
appropriate way is to use xdp_return_frame().
Fixes: cac320c850ef ("virtio_net: convert to use generic xdp_frame and xdp_return_frame API")
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit 8dcc5b0ab0ec ("virtio_net: fix ndo_xdp_xmit crash towards dev not
ready for XDP") tried to avoid access to unexpected sq while XDP is
disabled, but was not complete.
There was a small window which causes out of bounds sq access in
virtnet_xdp_xmit() while disabling XDP.
An example case of
- curr_queue_pairs = 6 (2 for SKB and 4 for XDP)
- online_cpu_num = xdp_queue_paris = 4
when XDP is enabled:
CPU 0 CPU 1
(Disabling XDP) (Processing redirected XDP frames)
virtnet_xdp_xmit()
virtnet_xdp_set()
_virtnet_set_queues()
set curr_queue_pairs (2)
check if rq->xdp_prog is not NULL
virtnet_xdp_sq(vi)
qp = curr_queue_pairs -
xdp_queue_pairs +
smp_processor_id()
= 2 - 4 + 1 = -1
sq = &vi->sq[qp] // out of bounds access
set xdp_queue_pairs (0)
rq->xdp_prog = NULL
Basically we should not change curr_queue_pairs and xdp_queue_pairs
while someone can read the values. Thus, when disabling XDP, assign NULL
to rq->xdp_prog first, and wait for RCU grace period, then change
xxx_queue_pairs.
Note that we need to keep the current order when enabling XDP though.
- v2: Make rcu_assign_pointer/synchronize_net conditional instead of
_virtnet_set_queues.
Fixes: 186b3c998c50 ("virtio-net: support XDP_REDIRECT")
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When XDP is disabled, curr_queue_pairs + smp_processor_id() can be
larger than max_queue_pairs.
There is no guarantee that we have enough XDP send queues dedicated for
each cpu when XDP is disabled, so do not count drops on sq in that case.
Fixes: 5b8f3c8d30a6 ("virtio_net: Add XDP related stats")
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When _virtnet_set_queues() failed we did not restore real_num_rx_queues.
Fix this by placing the change of real_num_rx_queues after
_virtnet_set_queues().
This order is also in line with virtnet_set_channels().
Fixes: 4941d472bf95 ("virtio-net: do not reset during XDP set")
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When napi_tx is enabled, virtnet_poll_cleantx() called
free_old_xmit_skbs() even for xdp send queue.
This is bogus since the queue has xdp_frames, not sk_buffs, thus mangled
device tx bytes counters because skb->len is meaningless value, and even
triggered oops due to general protection fault on freeing them.
Since xdp send queues do not aquire locks, old xdp_frames should be
freed only in virtnet_xdp_xmit(), so just skip free_old_xmit_skbs() for
xdp send queues.
Similarly virtnet_poll_tx() called free_old_xmit_skbs(). This NAPI
handler is called even without calling start_xmit() because cb for tx is
by default enabled. Once the handler is called, it enabled the cb again,
and then the handler would be called again. We don't need this handler
for XDP, so don't enable cb as well as not calling free_old_xmit_skbs().
Also, we need to disable tx NAPI when disabling XDP, so
virtnet_poll_tx() can safely access curr_queue_pairs and
xdp_queue_pairs, which are not atomically updated while disabling XDP.
Fixes: b92f1e6751a6 ("virtio-net: transmit napi")
Fixes: 7b0411ef4aa6 ("virtio-net: clean tx descriptors from rx napi")
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit 4e09ff536284 ("virtio-net: disable NAPI only when enabled during
XDP set") tried to fix inappropriate NAPI enabling/disabling when
!netif_running(), but was not complete.
On error path virtio_net could enable NAPI even when !netif_running().
This can cause enabling NAPI twice on virtnet_open(), which would
trigger BUG_ON() in napi_enable().
Fixes: 4941d472bf95b ("virtio-net: do not reset during XDP set")
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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After a timeout event caused by for example a broadcast storm, when
the MAC and PHY are reset, the BQL TX queue needs to be reset as
well. Otherwise, the device will exhibit severe performance issues
even after the storm has ended.
Co-authored-by: David Gounaris <david.gounaris@infinera.com>
Signed-off-by: Mathias Thore <mathias.thore@infinera.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The skb should be freed by dev_consume_skb_any() in b44_start_xmit()
when bounce_skb is used. The skb is be replaced by bounce_skb, so the
original skb should be consumed(not drop).
dev_consume_skb_irq() should be called in b44_tx() when skb xmit
done. It makes drop profiles(dropwatch, perf) more friendly.
Signed-off-by: Yang Wei <yang.wei9@zte.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The skb shouled be consumed when xmit done, it makes drop profiles
(dropwatch, perf) more friendly.
dev_kfree_skb_irq()/kfree_skb() shouled be replaced by
dev_consume_skb_any(), it makes code cleaner.
Signed-off-by: Yang Wei <yang.wei9@zte.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
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dev_consume_skb_irq() should be called in cp_tx() when skb xmit
done. It makes drop profiles(dropwatch, perf) more friendly.
Signed-off-by: Yang Wei <yang.wei9@zte.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The interrupt handler contains a workaround for RX hang applicable
to Zynq and AT91RM9200 only. Subsequent versions do not need this
workaround. This workaround unnecessarily resets RX whenever RX used
bit read is observed, which can be often under heavy traffic. There
is no other action performed on RX UBR interrupt. Hence introduce a
CAPS mask; enable this interrupt and workaround only on affected
versions.
Signed-off-by: Harini Katakam <harini.katakam@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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dev_consume_skb_irq() should be called in cpmac_end_xmit() when
xmit done. It makes drop profiles more friendly.
Signed-off-by: Yang Wei <yang.wei9@zte.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
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dev_consume_skb_irq() should be called in bmac_txdma_intr() when
xmit done. It makes drop profiles more friendly.
Signed-off-by: Yang Wei <yang.wei9@zte.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
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dev_consume_skb_irq() should be called in amd8111e_tx() when xmit
done. It makes drop profiles more friendly.
Signed-off-by: Yang Wei <yang.wei9@zte.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
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dev_consume_skb_irq() should be called in ace_tx_int() when xmit
done. It makes drop profiles more friendly.
Signed-off-by: Yang Wei <yang.wei9@zte.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
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KASAN reported following bug in qed_init_qm_get_idx_from_flags
due to inappropriate casting of "pq_flags". Fix the type of "pq_flags".
[ 196.624707] BUG: KASAN: stack-out-of-bounds in qed_init_qm_get_idx_from_flags+0x1a4/0x1b8 [qed]
[ 196.624712] Read of size 8 at addr ffff809b00bc7360 by task kworker/0:9/1712
[ 196.624714]
[ 196.624720] CPU: 0 PID: 1712 Comm: kworker/0:9 Not tainted 4.18.0-60.el8.aarch64+debug #1
[ 196.624723] Hardware name: To be filled by O.E.M. Saber/Saber, BIOS 0ACKL024 09/26/2018
[ 196.624733] Workqueue: events work_for_cpu_fn
[ 196.624738] Call trace:
[ 196.624742] dump_backtrace+0x0/0x2f8
[ 196.624745] show_stack+0x24/0x30
[ 196.624749] dump_stack+0xe0/0x11c
[ 196.624755] print_address_description+0x68/0x260
[ 196.624759] kasan_report+0x178/0x340
[ 196.624762] __asan_report_load_n_noabort+0x38/0x48
[ 196.624786] qed_init_qm_get_idx_from_flags+0x1a4/0x1b8 [qed]
[ 196.624808] qed_init_qm_info+0xec0/0x2200 [qed]
[ 196.624830] qed_resc_alloc+0x284/0x7e8 [qed]
[ 196.624853] qed_slowpath_start+0x6cc/0x1ae8 [qed]
[ 196.624864] __qede_probe.isra.10+0x1cc/0x12c0 [qede]
[ 196.624874] qede_probe+0x78/0xf0 [qede]
[ 196.624879] local_pci_probe+0xc4/0x180
[ 196.624882] work_for_cpu_fn+0x54/0x98
[ 196.624885] process_one_work+0x758/0x1900
[ 196.624888] worker_thread+0x4e0/0xd18
[ 196.624892] kthread+0x2c8/0x350
[ 196.624897] ret_from_fork+0x10/0x18
[ 196.624899]
[ 196.624902] Allocated by task 2:
[ 196.624906] kasan_kmalloc.part.1+0x40/0x108
[ 196.624909] kasan_kmalloc+0xb4/0xc8
[ 196.624913] kasan_slab_alloc+0x14/0x20
[ 196.624916] kmem_cache_alloc_node+0x1dc/0x480
[ 196.624921] copy_process.isra.1.part.2+0x1d8/0x4a98
[ 196.624924] _do_fork+0x150/0xfa0
[ 196.624926] kernel_thread+0x48/0x58
[ 196.624930] kthreadd+0x3a4/0x5a0
[ 196.624932] ret_from_fork+0x10/0x18
[ 196.624934]
[ 196.624937] Freed by task 0:
[ 196.624938] (stack is not available)
[ 196.624940]
[ 196.624943] The buggy address belongs to the object at ffff809b00bc0000
[ 196.624943] which belongs to the cache thread_stack of size 32768
[ 196.624946] The buggy address is located 29536 bytes inside of
[ 196.624946] 32768-byte region [ffff809b00bc0000, ffff809b00bc8000)
[ 196.624948] The buggy address belongs to the page:
[ 196.624952] page:ffff7fe026c02e00 count:1 mapcount:0 mapping:ffff809b4001c000 index:0x0 compound_mapcount: 0
[ 196.624960] flags: 0xfffff8000008100(slab|head)
[ 196.624967] raw: 0fffff8000008100 dead000000000100 dead000000000200 ffff809b4001c000
[ 196.624970] raw: 0000000000000000 0000000000080008 00000001ffffffff 0000000000000000
[ 196.624973] page dumped because: kasan: bad access detected
[ 196.624974]
[ 196.624976] Memory state around the buggy address:
[ 196.624980] ffff809b00bc7200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 196.624983] ffff809b00bc7280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 196.624985] >ffff809b00bc7300: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 04 f2 f2 f2
[ 196.624988] ^
[ 196.624990] ffff809b00bc7380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 196.624993] ffff809b00bc7400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 196.624995] ==================================================================
Signed-off-by: Manish Chopra <manishc@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Cache number of fragments in the skb locally as in case
of linear skb (with zero fragments), tx completion
(or freeing of skb) may happen before driver tries
to get number of frgaments from the skb which could
lead to stale access to an already freed skb.
Signed-off-by: Manish Chopra <manishc@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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VFs may hit VF-PF channel timeout while probing, as in some
cases it was observed that VF FLR and VF "acquire" message
transaction (i.e first message from VF to PF in VF's probe flow)
could occur simultaneously which could lead VF to fail sending
"acquire" message to PF as VF is marked disabled from HW perspective
due to FLR, which will result into channel timeout and VF probe failure.
In such cases, try retrying VF "acquire" message so that in later
attempts it could be successful to pass message to PF after the VF
FLR is completed and can be probed successfully.
Signed-off-by: Manish Chopra <manishc@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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VF is always configured to drop control frames
(with reserved mac addresses) but to work LACP
on the VFs, it would require LACP control frames
to be forwarded or transmitted successfully.
This patch fixes this in such a way that trusted VFs
(marked through ndo_set_vf_trust) would be allowed to
pass the control frames such as LACP pdus.
Signed-off-by: Manish Chopra <manishc@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When running tx switched traffic between VNICs
created via a bridge(to which VFs are added),
adapter drops the unicast packets in tx flow due to
VNIC's ucast mac being unknown to it. But VF interfaces
being in promiscuous mode should have caused adapter
to accept all the unknown ucast packets. Later, it
was found that driver doesn't really configure tx
promiscuous mode settings to accept all unknown unicast macs.
This patch fixes tx promiscuous mode settings to accept all
unknown/unmatched unicast macs and works out the scenario.
Signed-off-by: Manish Chopra <manishc@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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dev_consume_skb_irq() should be called in i596_interrupt() when skb
xmit done. It makes drop profiles(dropwatch, perf) more friendly.
Signed-off-by: Yang Wei <albin_yang@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Duec to a typo, mv88e6390_serdes_irq_setup() calls itself, rather than
mv88e6390x_serdes_irq_setup(). It then blows the stack, and shortly
after the machine blows up.
Fixes: 2defda1f4b91 ("net: dsa: mv88e6xxx: Add support for SERDES on ports 2-8 for 6390X")
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If phy_power_on() fails in rk_gmac_powerup(), clocks are left enabled.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When reading phy registers via Clause 45 MDIO protocol, after write
address operation, the driver use another write address operation, so
can not read the right value of any phy registers. This patch fixes it.
Signed-off-by: Yonglong Liu <liuyonglong@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The hns driver of earlier devices, when autoneg off, restart autoneg
will return -EINVAL, so make the hns driver for the latest devices
do the same.
Signed-off-by: Yonglong Liu <liuyonglong@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In hns enet driver, we use of_parse_handle() to get hold of the
device node related to "ae-handle" but we have missed to put
the node reference using of_node_put() after we are done using
the node. This patch fixes it.
Note:
This problem is stated in Link: https://lkml.org/lkml/2018/12/22/217
Fixes: 48189d6aaf1e ("net: hns: enet specifies a reference to dsaf")
Reported-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Yonglong Liu <liuyonglong@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux
Saeed Mahameed says:
====================
Mellanox, mlx5 fixes 2019-01-25
This series introduces some fixes to mlx5 driver.
For more information please see tag log below.
Please pull and let me know if there is any problem.
For -stable v4.13
('net/mlx5e: Allow MAC invalidation while spoofchk is ON')
For -stable v4.18
('Revert "net/mlx5e: E-Switch, Initialize eswitch only if eswitch manager"')
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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If fill_level was not zero and status was not BUSY,
result of "tx_prod - tx_cons - inuse" might be zero.
Subtracting 1 unconditionally results invalid negative return value
on this case.
Make sure not to return an negative value.
Signed-off-by: Tomonori Sakita <tomonori.sakita@sord.co.jp>
Signed-off-by: Atsushi Nemoto <atsushi.nemoto@sord.co.jp>
Reviewed-by: Dalon L Westergreen <dalon.westergreen@linux.intel.com>
Acked-by: Thor Thayer <thor.thayer@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This is new code and not bug fixes.
This reverts all changes added by merge commit
8fb18be93efd7292d6ee403b9f61af1008239639
Signed-off-by: David S. Miller <davem@davemloft.net>
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It turns out that libvirt uses 0-vid as a default if no vlan was
set for the guest (which is the case for switchdev mode) and errs
if we disallow that:
error: Failed to start domain vm75
error: Cannot set interface MAC/vlanid to 6a:66:2d:48:92:c2/0 \
for ifname enp59s0f0 vf 0: Operation not supported
So allow this in order not to break existing systems.
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reported-by: Maor Dickman <maord@mellanox.com>
Reviewed-by: Gavi Teitz <gavi@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
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With VF LAG commit 491c37e49b48 "net/mlx5e: In case of LAG, one switch
parent id is used for all representors", both uplinks and all the VFs
(on both of them) get the same switchdev id.
This cause the provisioning system method to identify the rep of a given
VF from the parent PF PCI device using switchev id and physical port
name to break, since VFm of PF0 will have the (id, name) as VFm of PF1.
To fix that, we align to use the framework agreed upstream and set by
nfp commit 168c478e107e "nfp: wire get_phys_port_name on representors":
$ cat /sys/class/net/eth4_*/phys_port_name
p0
pf0vf0
pf0vf1
Now, the names will be different, e.g. pf0vf0 vs. pf1vf0.
Fixes: 491c37e49b48 ("net/mlx5e: In case of LAG, one switch parent id is used for all representors")
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reported-by: Waleed Musa <waleedm@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
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Prior to this patch the driver prohibited spoof checking on invalid MAC.
Now the user can set this configuration if it wishes to.
This is required since libvirt might invalidate the VF Mac by setting it
to zero, while spoofcheck is ON.
Fixes: 1ab2068a4c66 ("net/mlx5: Implement vports admin state backup/restore")
Signed-off-by: Aya Levin <ayal@mellanox.com>
Reviewed-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
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The lock in qp_table might be taken from process context or from
interrupt context. This may lead to a deadlock unless it is taken with
IRQs disabled.
Discovered by lockdep
================================
WARNING: inconsistent lock state
4.20.0-rc6
--------------------------------
inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W}
python/12572 [HC1[1]:SC0[0]:HE0:SE1] takes:
00000000052a4df4 (&(&table->lock)->rlock#2){?.+.}, /0x50 [mlx5_core]
{HARDIRQ-ON-W} state was registered at:
_raw_spin_lock+0x33/0x70
mlx5_get_rsc+0x1a/0x50 [mlx5_core]
mlx5_ib_eqe_pf_action+0x493/0x1be0 [mlx5_ib]
process_one_work+0x90c/0x1820
worker_thread+0x87/0xbb0
kthread+0x320/0x3e0
ret_from_fork+0x24/0x30
irq event stamp: 103928
hardirqs last enabled at (103927): [] nk+0x1a/0x1c
hardirqs last disabled at (103928): [] unk+0x1a/0x1c
softirqs last enabled at (103924): [] tcp_sendmsg+0x31/0x40
softirqs last disabled at (103922): [] 80
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&(&table->lock)->rlock#2);
lock(&(&table->lock)->rlock#2);
*** DEADLOCK ***
Fixes: 032080ab43ac ("IB/mlx5: Lock QP during page fault handling")
Signed-off-by: Moni Shoua <monis@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
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MLX5E_PFLAG_* definitions were changed from bitmask to enumerated
values. However, in mlx5e_open_rq(), the proper API (MLX5E_GET_PFLAG macro)
was not used to read the flag value of MLX5E_PFLAG_RX_NO_CSUM_COMPLETE.
Fixed it.
Fixes: 8ff57c18e9f6 ("net/mlx5e: Improve ethtool private-flags code structure")
Signed-off-by: Shay Agroskin <shayag@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
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This reverts commit 5f5991f36dce1e69dd8bd7495763eec2e28f08e7.
With the original commit, eswitch instance will not be initialized for
a function which is vport group manager but not eswitch manager such as
host PF on SmartNIC (BlueField) card. This will result in a kernel crash
when such a vport group manager is trying to access vports in its group.
E.g, PF vport manager (not eswitch manager) tries to configure the MAC
of its VF vport, a kernel trace will happen similar as bellow:
BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
...
RIP: 0010:mlx5_eswitch_get_vport_config+0xc/0x180 [mlx5_core]
...
Fixes: 5f5991f36dce ("net/mlx5e: E-Switch, Initialize eswitch only if eswitch manager")
Signed-off-by: Bodong Wang <bodong@mellanox.com>
Reported-by: Yuval Avnery <yuvalav@mellanox.com>
Reviewed-by: Daniel Jurgens <danielj@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
Johannes Berg says:
====================
Just a few small fixes:
* avoid trying to operate TDLS when not connection,
this is not valid and led to issues
* count TTL-dropped frames in mesh better
* deal with new WiGig channels in regulatory code
* remove a WARN_ON() that can trigger due to benign
races during device/driver registration
* fix nested netlink policy maxattrs (syzkaller)
* fix hwsim n_limits (syzkaller)
* propagate __aligned(2) to a surrounding struct
* return proper error in virt_wifi error path
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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The IBM virtual ethernet driver's polling function continues
to process frames after rescheduling NAPI, resulting in a warning
if it exhausted its budget. Do not restart polling after calling
napi_reschedule. Instead let frames be processed in the following
instance.
Signed-off-by: Thomas Falcon <tlfalcon@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The ax88772_bind() should return error code immediately when the PHY
was not reset properly through ax88772a_hw_reset().
Otherwise, The asix_get_phyid() will block when get the PHY
Identifier from the PHYSID1 MII registers through asix_mdio_read()
due to the PHY isn't ready. Furthermore, it will produce a lot of
error message cause system crash.As follows:
asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to write
reg index 0x0000: -71
asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to send
software reset: ffffffb9
asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to write
reg index 0x0000: -71
asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to enable
software MII access
asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to read
reg index 0x0000: -71
asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to write
reg index 0x0000: -71
asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to enable
software MII access
asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to read
reg index 0x0000: -71
...
Signed-off-by: Zhang Run <zhang.run@zte.com.cn>
Reviewed-by: Yang Wei <yang.wei9@zte.com.cn>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Sasha Levin says:
====================
Hyper-V hv_netvsc commits for 5.0
Three patches from Haiyang Zhang to fix settings hash key using ethtool,
and Adrian Vladu's first patch fixing a few spelling mistakes.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can
Marc Kleine-Budde says:
====================
pull-request: can 2019-01-22
this is a pull request of 4 patches for net/master.
The first patch by is by Manfred Schlaegl and reverts a patch that caused wrong
warning messages in certain use cases. The next patch is by Oliver Hartkopp for
the bcm that adds sanity checks for the timer value before using it to detect
potential interger overflows. The last two patches are for the flexcan driver,
YueHaibing's patch fixes the the return value in the error path of the
flexcan_setup_stop_mode() function. The second patch is by Uwe Kleine-König and
fixes a NULL pointer deref on older flexcan cores in flexcan_chip_start().
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Procedure mlx4_init_user_cqes() handles returns by copy_to_user
incorrectly. copy_to_user() returns the number of bytes not copied.
Thus, a non-zero return should be treated as a -EFAULT error
(as is done elsewhere in the kernel). However, mlx4_init_user_cqes()
error handling simply returns the number of bytes not copied
(instead of -EFAULT).
Note, though, that this is a harmless bug: procedure mlx4_alloc_cq()
(which is the only caller of mlx4_init_user_cqes()) treats any
non-zero return as an error, but that returned error value is processed
internally, and not passed further up the call stack.
In addition, fixes the following sparse warning:
warning: incorrect type in argument 1 (different address spaces)
expected void [noderef] <asn:1>*to
got void *buf
Fixes: e45678973dcb ("{net, IB}/mlx4: Initialize CQ buffers in the driver when possible")
Reported by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Driver reads the query HCA capabilities without the corresponding masks.
Without the correct masks, the base addresses of the queues are
unaligned. In addition some reserved bits were wrongly read. Using the
correct masks, ensures alignment of the base addresses and allows future
firmware versions safe use of the reserved bits.
Fixes: ab9c17a009ee ("mlx4_core: Modify driver initialization flow to accommodate SRIOV for Ethernet")
Fixes: 0ff1fb654bec ("{NET, IB}/mlx4: Add device managed flow steering firmware API")
Signed-off-by: Aya Levin <ayal@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Use a bitmap to keep track of which partition types we've already seen;
for duplicates, return -EEXIST from efx_ef10_mtd_probe_partition() and
thus skip adding that partition.
Duplicate partitions occur because of the A/B backup scheme used by newer
sfc NICs. Prior to this patch they cause sysfs_warn_dup errors because
they have the same name, causing us not to expose any MTDs at all.
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Fix all typos from hyperv netvsc code comments.
Signed-off-by: Adrian Vladu <avladu@cloudbasesolutions.com>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Stephen Hemminger <sthemmin@microsoft.com>
Cc: Sasha Levin <sashal@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: "Alessandro Pilotti" <apilotti@cloudbasesolutions.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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Changing mtu, channels, or buffer sizes ops call to netvsc_attach(),
rndis_set_subchannel(), which always reset the hash key to default
value. That will override hash key changed previously. This patch
fixes the problem by save the hash key, then restore it when we re-
add the netvsc device.
Fixes: ff4a44199012 ("netvsc: allow get/set of RSS indirection table")
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
[sl: fix up subject line]
Signed-off-by: Sasha Levin <sashal@kernel.org>
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These assignments occur in multiple places. The patch refactor them
to a function for simplicity. It also puts the struct to heap area
for future expension.
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
[sl: fix up subject line]
Signed-off-by: Sasha Levin <sashal@kernel.org>
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Hyper-V hosts require us to disable RSS before changing RSS key,
otherwise the changing request will fail. This patch fixes the
coding error.
Fixes: ff4a44199012 ("netvsc: allow get/set of RSS indirection table")
Reported-by: Wei Hu <weh@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
[sl: fix up subject line]
Signed-off-by: Sasha Levin <sashal@kernel.org>
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EtherAVB may provide a checksum of packet data appended to packet data. In
order to allow this checksum to be received by the host descriptor data
needs to be enlarged by 2 bytes to accommodate the checksum.
In the case of MTU-sized packets without a VLAN tag the
checksum were already accommodated by virtue of the space reserved for the
VLAN tag. However, a packet of MTU-size with a VLAN tag consumed all
packet data space provided by a descriptor leaving no space for the
trailing checksum.
This was not detected by the driver which incorrectly used the last two
bytes of packet data as the checksum and truncate the packet by two bytes.
This resulted all such packets being dropped.
A work around is to disable RX checksum offload
# ethtool -K eth0 rx off
This patch resolves this problem by increasing the size available for
packet data in RX descriptors by two bytes.
Tested on R-Car E3 (r8a77990) ES1.0 based Ebisu-4D board
v2
* Use sizeof(__sum16) directly rather than adding a driver-local
#define for the size of the checksum provided by the hw (2 bytes).
Fixes: 4d86d3818627 ("ravb: RX checksum offload")
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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A few PHY drivers have the GPLv2+ license text. They then either have
a MODULE_LICENSE() of GPLv2 only, or an SPDX tag of GPLv2 only.
Since the license text is much easier to understand than either the
SPDX tag or the MODULE_LICENSE, use it as the definitive source of the
licence, and fixup the others when there are contradictions.
Cc: David Wu <david.wu@rock-chips.com>
Cc: Dongpo Li <lidongpo@hisilicon.com>
Cc: Michael Schmitz <schmitzmic@gmail.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Michael Schmitz <schmitzmic@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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