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  1. 29 Jul, 2020 9 commits
  3. 28 Jul, 2020 23 commits
    • David S. Miller's avatar
      Merge tag 'mlx5-fixes-2020-07-28' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux · b5cd55b3
      David S. Miller authored 
      Saeed Mahameed says:

====================
mlx5 fixes-2020-07-28

This series introduces some fixes to mlx5 driver.
v1->v2:
 - Drop the "Hold reference on mirred devices" patch, until Or's
   comments are addressed.
 - Imporve "Modify uplink state" patch commit message per Or's request.

Please pull and let me know if there is any problem.

For -Stable:

For -stable v4.9
 ('net/mlx5e: Fix error path of device attach')

For -stable v4.15
 ('net/mlx5: Verify Hardware supports requested ptp function on a given
pin')

For -stable v5.3
 ('net/mlx5e: Modify uplink state on interface up/down')

For -stable v5.4
 ('net/mlx5e: Fix kernel crash when setting vf VLANID on a VF dev')
 ('net/mlx5: E-switch, Destroy TSAR when fail to enable the mode')

For -stable v5.5
 ('net/mlx5: E-switch, Destroy TSAR after reload interface')

For -stable v5.7
 ('net/mlx5: Fix a bug of using ptp channel index as pin index')
====================
Acked-by: default avatarJakub Kicinski <kuba@kernel.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b5cd55b3
    • David S. Miller's avatar
      Merge branch 'net-lan78xx-fix-NULL-deref-and-memory-leak' · 2ff34c90
      David S. Miller authored 
      Johan Hovold says:

====================
net: lan78xx: fix NULL deref and memory leak

The first two patches fix a NULL-pointer dereference at probe that can
be triggered by a malicious device and a small transfer-buffer memory
leak, respectively.

For another subsystem I would have marked them:

	Cc: stable@vger.kernel.org	# 4.3

The third one replaces the driver's current broken endpoint lookup
helper, which could end up accepting incomplete interfaces and whose
results weren't even useeren
Johan
====================
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      2ff34c90
    • Johan Hovold's avatar
      net: lan78xx: replace bogus endpoint lookup · ea060b35
      Johan Hovold authored 
      Drop the bogus endpoint-lookup helper which could end up accepting
interfaces based on endpoints belonging to unrelated altsettings.

Note that the returned bulk pipes and interrupt endpoint descriptor
were never actually used. Instead the bulk-endpoint numbers are
hardcoded to 1 and 2 (matching the specification), while the interrupt-
endpoint descriptor was assumed to be the third descriptor created by
USB core.

Try to bring some order to this by dropping the bogus lookup helper and
adding the missing endpoint sanity checks while keeping the interrupt-
descriptor assumption for now.
Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      ea060b35
    • Johan Hovold's avatar
      net: lan78xx: fix transfer-buffer memory leak · 63634aa6
      Johan Hovold authored 
      The interrupt URB transfer-buffer was never freed on disconnect or after
probe errors.

Fixes: 55d7de9d ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver")
Cc: Woojung.Huh@microchip.com <Woojung.Huh@microchip.com>
Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      63634aa6
    • Johan Hovold's avatar
      net: lan78xx: add missing endpoint sanity check · 8d8e95fd
      Johan Hovold authored 
      Add the missing endpoint sanity check to prevent a NULL-pointer
dereference should a malicious device lack the expected endpoints.

Note that the driver has a broken endpoint-lookup helper,
lan78xx_get_endpoints(), which can end up accepting interfaces in an
altsetting without endpoints as long as *some* altsetting has a bulk-in
and a bulk-out endpoint.

Fixes: 55d7de9d ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver")
Cc: Woojung.Huh@microchip.com <Woojung.Huh@microchip.com>
Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      8d8e95fd
    • Rustam Kovhaev's avatar
      usb: hso: check for return value in hso_serial_common_create() · e911e99a
      Rustam Kovhaev authored 
      in case of an error tty_register_device_attr() returns ERR_PTR(),
add IS_ERR() check

Reported-and-tested-by: syzbot+67b2bd0e34f952d0321e@syzkaller.appspotmail.com
Link: https://syzkaller.appspot.com/bug?extid=67b2bd0e34f952d0321eSigned-off-by: default avatarRustam Kovhaev <rkovhaev@gmail.com>
Reviewed-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      e911e99a
    • Alaa Hleihel's avatar
      net/mlx5e: Fix kernel crash when setting vf VLANID on a VF dev · 350a6324
      Alaa Hleihel authored 
      After the cited commit, function 'mlx5_eswitch_set_vport_vlan' started
to acquire esw->state_lock.
However, esw is not defined for VF devices, hence attempting to set vf
VLANID on a VF dev will cause a kernel panic.

Fix it by moving up the (redundant) esw validation from function
'__mlx5_eswitch_set_vport_vlan' since the rest of the callers now have
and use a valid esw.

For example with vf device eth4:
 # ip link set dev eth4 vf 0 vlan 0

Trace of the panic:
 [  411.409842] BUG: unable to handle page fault for address: 00000000000011b8
 [  411.449745] #PF: supervisor read access in kernel mode
 [  411.452348] #PF: error_code(0x0000) - not-present page
 [  411.454938] PGD 80000004189c9067 P4D 80000004189c9067 PUD 41899a067 PMD 0
 [  411.458382] Oops: 0000 [#1] SMP PTI
 [  411.460268] CPU: 4 PID: 5711 Comm: ip Not tainted 5.8.0-rc4_for_upstream_min_debug_2020_07_08_22_04 #1
 [  411.462447] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014
 [  411.464158] RIP: 0010:__mutex_lock+0x4e/0x940
 [  411.464928] Code: fd 41 54 49 89 f4 41 52 53 89 d3 48 83 ec 70 44 8b 1d ee 03 b0 01 65 48 8b 04 25 28 00 00 00 48 89 45 c8 31 c0 45 85 db 75 0a <48> 3b 7f 60 0f 85 7e 05 00 00 49 8d 45 68 41 56 41 b8 01 00 00 00
 [  411.467678] RSP: 0018:ffff88841fcd74b0 EFLAGS: 00010246
 [  411.468562] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
 [  411.469715] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000001158
 [  411.470812] RBP: ffff88841fcd7550 R08: ffffffffa00fa1ce R09: 0000000000000000
 [  411.471835] R10: ffff88841fcd7570 R11: 0000000000000000 R12: 0000000000000002
 [  411.472862] R13: 0000000000001158 R14: ffffffffa00fa1ce R15: 0000000000000000
 [  411.474004] FS:  00007faee7ca6b80(0000) GS:ffff88846fc00000(0000) knlGS:0000000000000000
 [  411.475237] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 [  411.476129] CR2: 00000000000011b8 CR3: 000000041909c006 CR4: 0000000000360ea0
 [  411.477260] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
 [  411.478340] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
 [  411.479332] Call Trace:
 [  411.479760]  ? __nla_validate_parse.part.6+0x57/0x8f0
 [  411.482825]  ? mlx5_eswitch_set_vport_vlan+0x3e/0xa0 [mlx5_core]
 [  411.483804]  mlx5_eswitch_set_vport_vlan+0x3e/0xa0 [mlx5_core]
 [  411.484733]  mlx5e_set_vf_vlan+0x41/0x50 [mlx5_core]
 [  411.485545]  do_setlink+0x613/0x1000
 [  411.486165]  __rtnl_newlink+0x53d/0x8c0
 [  411.486791]  ? mark_held_locks+0x49/0x70
 [  411.487429]  ? __lock_acquire+0x8fe/0x1eb0
 [  411.488085]  ? rcu_read_lock_sched_held+0x52/0x60
 [  411.488998]  ? kmem_cache_alloc_trace+0x16d/0x2d0
 [  411.489759]  rtnl_newlink+0x47/0x70
 [  411.490357]  rtnetlink_rcv_msg+0x24e/0x450
 [  411.490978]  ? netlink_deliver_tap+0x92/0x3d0
 [  411.491631]  ? validate_linkmsg+0x330/0x330
 [  411.492262]  netlink_rcv_skb+0x47/0x110
 [  411.492852]  netlink_unicast+0x1ac/0x270
 [  411.493551]  netlink_sendmsg+0x336/0x450
 [  411.494209]  sock_sendmsg+0x30/0x40
 [  411.494779]  ____sys_sendmsg+0x1dd/0x1f0
 [  411.495378]  ? copy_msghdr_from_user+0x5c/0x90
 [  411.496082]  ___sys_sendmsg+0x87/0xd0
 [  411.496683]  ? lock_acquire+0xb9/0x3a0
 [  411.497322]  ? lru_cache_add+0x5/0x170
 [  411.497944]  ? find_held_lock+0x2d/0x90
 [  411.498568]  ? handle_mm_fault+0xe46/0x18c0
 [  411.499205]  ? __sys_sendmsg+0x51/0x90
 [  411.499784]  __sys_sendmsg+0x51/0x90
 [  411.500341]  do_syscall_64+0x59/0x2e0
 [  411.500938]  ? asm_exc_page_fault+0x8/0x30
 [  411.501609]  ? rcu_read_lock_sched_held+0x52/0x60
 [  411.502350]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
 [  411.503093] RIP: 0033:0x7faee73b85a7
 [  411.503654] Code: Bad RIP value.

Fixes: 0e18134f ("net/mlx5e: Eswitch, use state_lock to synchronize vlan change")
Signed-off-by: default avatarAlaa Hleihel <alaa@mellanox.com>
Reviewed-by: default avatarRoi Dayan <roid@mellanox.com>
Reviewed-by: default avatarVlad Buslov <vladbu@mellanox.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
      350a6324
    • Ron Diskin's avatar
      net/mlx5e: Modify uplink state on interface up/down · 7d0314b1
      Ron Diskin authored 
      When setting the PF interface up/down, notify the firmware to update
uplink state via MODIFY_VPORT_STATE, when E-Switch is enabled.

This behavior will prevent sending traffic out on uplink port when PF is
down, such as sending traffic from a VF interface which is still up.
Currently when calling mlx5e_open/close(), the driver only sends PAOS
command to notify the firmware to set the physical port state to
up/down, however, it is not sufficient. When VF is in "auto" state, it
follows the uplink state, which was not updated on mlx5e_open/close()
before this patch.

When switchdev mode is enabled and uplink representor is first enabled,
set the uplink port state value back to its FW default "AUTO".

Fixes: 63bfd399 ("net/mlx5e: Send PAOS command on interface up/down")
Signed-off-by: default avatarRon Diskin <rondi@mellanox.com>
Reviewed-by: default avatarRoi Dayan <roid@mellanox.com>
Reviewed-by: default avatarMoshe Shemesh <moshe@mellanox.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
      7d0314b1
    • Eran Ben Elisha's avatar
      net/mlx5: Query PPS pin operational status before registering it · ed56d749
      Eran Ben Elisha authored 
      In a special configuration, a ConnectX6-Dx pin pps-out might be activated
when driver is loaded. Fix the driver to always read the operational pin
mode when registering it, and advertise it accordingly.

Fixes: ee7f1220 ("net/mlx5e: Implement 1PPS support")
Signed-off-by: default avatarEran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
      ed56d749
    • Raed Salem's avatar
      net/mlx5e: Fix slab-out-of-bounds in mlx5e_rep_is_lag_netdev · 21083309
      Raed Salem authored 
      mlx5e_rep_is_lag_netdev is used as first check as part of netdev events
handler for bond device of non-uplink representors, this handler can get
any netdevice under the same network namespace of mlx5e netdevice. Current
code treats the netdev as mlx5e netdev and only later on verifies this,
hence causes the following Kasan trace:
[15402.744990] ==================================================================
[15402.746942] BUG: KASAN: slab-out-of-bounds in mlx5e_rep_is_lag_netdev+0xcb/0xf0 [mlx5_core]
[15402.749009] Read of size 8 at addr ffff880391f3f6b0 by task ovs-vswitchd/5347

[15402.752065] CPU: 7 PID: 5347 Comm: ovs-vswitchd Kdump: loaded Tainted: G    B      O     --------- -t - 4.18.0-g3dcc204d291d-dirty #1
[15402.755349] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014
[15402.757600] Call Trace:
[15402.758968]  dump_stack+0x71/0xab
[15402.760427]  print_address_description+0x6a/0x270
[15402.761969]  kasan_report+0x179/0x2d0
[15402.763445]  ? mlx5e_rep_is_lag_netdev+0xcb/0xf0 [mlx5_core]
[15402.765121]  mlx5e_rep_is_lag_netdev+0xcb/0xf0 [mlx5_core]
[15402.766782]  mlx5e_rep_esw_bond_netevent+0x129/0x620 [mlx5_core]

Fix by deferring the violating access to be post the netdev verify check.

Fixes: 7e51891a ("net/mlx5e: Use netdev events to set/del egress acl forward-to-vport rule")
Signed-off-by: default avatarRaed Salem <raeds@mellanox.com>
Reviewed-by: default avatarRoi Dayan <roid@mellanox.com>
Reviewed-by: default avatarVu Pham <vuhuong@mellanox.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
      21083309
    • Eran Ben Elisha's avatar
      net/mlx5: Verify Hardware supports requested ptp function on a given pin · 071995c8
      Eran Ben Elisha authored 
      Fix a bug where driver did not verify Hardware pin capabilities for
PTP functions.

Fixes: ee7f1220 ("net/mlx5e: Implement 1PPS support")
Signed-off-by: default avatarEran Ben Elisha <eranbe@mellanox.com>
Reviewed-by: default avatarAriel Levkovich <lariel@mellanox.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
      071995c8
    • Eran Ben Elisha's avatar
      net/mlx5: Fix a bug of using ptp channel index as pin index · 88c8cf92
      Eran Ben Elisha authored 
      On PTP mlx5_ptp_enable(on=0) flow, driver mistakenly used channel index
as pin index.

After ptp patch marked in fixes tag was introduced, driver can freely
call ptp_find_pin() as part of the .enable() callback.

Fix driver mlx5_ptp_enable(on=0) flow to always use ptp_find_pin(). With
that, Driver will use the correct pin index in mlx5_ptp_enable(on=0) flow.

In addition, when initializing the pins, always set channel to zero. As
all pins can be attached to all channels, let ptp_set_pinfunc() to move
them between the channels.

For stable branches, this fix to be applied only on kernels that includes
both patches in fixes tag. Otherwise, mlx5_ptp_enable(on=0) will be stuck
on pincfg_mux.

Fixes: 62582a7e ("ptp: Avoid deadlocks in the programmable pin code.")
Fixes: ee7f1220 ("net/mlx5e: Implement 1PPS support")
Signed-off-by: default avatarEran Ben Elisha <eranbe@mellanox.com>
Reviewed-by: default avatarAriel Levkovich <lariel@mellanox.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
      88c8cf92
    • Maor Dickman's avatar
      net/mlx5e: Fix missing cleanup of ethtool steering during rep rx cleanup · 0e2e7aa5
      Maor Dickman authored 
      The cited commit add initialization of ethtool steering during
representor rx initializations without cleaning it up in representor
rx cleanup, this may cause for stale ethtool flows to remain after
moving back from switchdev mode to legacy mode.

Fixed by calling ethtool steering cleanup during rep rx cleanup.

Fixes: 6783e8b2 ("net/mlx5e: Init ethtool steering for representors")
Signed-off-by: default avatarMaor Dickman <maord@mellanox.com>
Reviewed-by: default avatarRoi Dayan <roid@mellanox.com>
Reviewed-by: default avatarVlad Buslov <vladbu@mellanox.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
      0e2e7aa5
    • Aya Levin's avatar
      net/mlx5e: Fix error path of device attach · 5cd39b6e
      Aya Levin authored 
      On failure to attach the netdev, fix the rollback by re-setting the
device's state back to MLX5E_STATE_DESTROYING.

Failing to attach doesn't stop statistics polling via .ndo_get_stats64.
In this case, although the device is not attached, it falsely continues
to query the firmware for counters. Setting the device's state back to
MLX5E_STATE_DESTROYING prevents the firmware counters query.

Fixes: 26e59d80 ("net/mlx5e: Implement mlx5e interface attach/detach callbacks")
Signed-off-by: default avatarAya Levin <ayal@mellanox.com>
Reviewed-by: default avatarTariq Toukan <tariqt@mellanox.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
      5cd39b6e
    • Maor Gottlieb's avatar
      net/mlx5: Fix forward to next namespace · 59f8f7c8
      Maor Gottlieb authored 
      The steering tree is as follow (nic RX as example):
		   ---------
                   |root_ns|
		   ---------
			|
      	--------------------------------
    	|		|	       |
   ---------- 	   ----------      ---------
   |p(prio)0|	   |   p1   |      |   pn  |
   ----------	   ----------	   ---------
        |		|
 ----------------  ---------------
 |ns(e.g bypass)|  |ns(e.g. lag) |
 ----------------  ---------------
  |     |    |
----  ----  ----
|p0|  |p1|  |pn|
----  ----  ----
 |
----
|FT|
----

find_next_chained_ft(prio) returns the first flow table in the next
priority. If prio is a parent of a flow table then it returns the first
flow table in the next priority in the same namespace, else if prio
is parent of namespace, then it should return the first flow table
in the next namespace. Currently if the user requests to forward to
next namespace, the code calls to find_next_chained_ft with the prio
of the next namespace and not the prio of the namesapce itself.

Fixes: 9254f8ed ("net/mlx5: Add support in forward to namespace")
Signed-off-by: default avatarMaor Gottlieb <maorg@mellanox.com>
Reviewed-by: default avatarMark Bloch <markb@mellanox.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
      59f8f7c8
    • Parav Pandit's avatar
      net/mlx5: E-switch, Destroy TSAR after reload interface · 0c2600c6
      Parav Pandit authored 
      When eswitch offloads is enabled, TSAR is created before reloading
the interfaces.
However when eswitch offloads mode is disabled, TSAR is disabled before
reloading the interfaces.

To keep the eswitch enable/disable sequence as mirror, destroy TSAR
after reloading the interfaces.

Fixes: 1bd27b11 ("net/mlx5: Introduce E-switch QoS management")
Signed-off-by: default avatarParav Pandit <parav@mellanox.com>
Reviewed-by: default avatarRoi Dayan <roid@mellanox.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
      0c2600c6
    • Parav Pandit's avatar
      net/mlx5: E-switch, Destroy TSAR when fail to enable the mode · 2b8e9c7c
      Parav Pandit authored 
      When either esw_legacy_enable() or esw_offloads_enable() fails,
code missed to destroy the created TSAR.

Hence, add the missing call to destroy the TSAR.

Fixes: 610090eb ("net/mlx5: E-switch, Initialize TSAR Qos hardware block before its user vports")
Signed-off-by: default avatarParav Pandit <parav@mellanox.com>
Reviewed-by: default avatarRoi Dayan <roid@mellanox.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
      2b8e9c7c
    • David S. Miller's avatar
      Merge branch 'hns3-fixes' · 7a9212d1
      David S. Miller authored 
      Huazhong Tan says:

====================
net: hns3: fixes for -net

There are some bugfixes for the HNS3 ethernet driver. patch#1 fixes
a desc filling bug, patch#2 fixes a false TX timeout issue, and
patch#3~#5 fixes some bugs related to VLAN and FD.
====================
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      7a9212d1
    • Guojia Liao's avatar
      net: hns3: fix for VLAN config when reset failed · b7b5d25b
      Guojia Liao authored 
      When device is resetting or reset failed, firmware is unable to
handle mailbox. VLAN should not be configured in this case.

Fixes: fe4144d4 ("net: hns3: sync VLAN filter entries when kill VLAN ID failed")
Signed-off-by: default avatarGuojia Liao <liaoguojia@huawei.com>
Signed-off-by: default avatarHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b7b5d25b
    • Guojia Liao's avatar
      net: hns3: fix aRFS FD rules leftover after add a user FD rule · efe3fa45
      Guojia Liao authored 
      When user had created a FD rule, all the aRFS rules should be clear up.
HNS3 process flow as below:
1.get spin lock of fd_ruls_list
2.clear up all aRFS rules
3.release lock
4.get spin lock of fd_ruls_list
5.creat a rules
6.release lock;

There is a short period of time between step 3 and step 4, which would
creatting some new aRFS FD rules if driver was receiving packet.
So refactor the fd_rule_lock to fix it.

Fixes: 44122887 ("net: hns3: refine the flow director handle")
Signed-off-by: default avatarGuojia Liao <liaoguojia@huawei.com>
Signed-off-by: default avatarHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      efe3fa45
    • Jian Shen's avatar
      net: hns3: add reset check for VF updating port based VLAN · a6f7bfdc
      Jian Shen authored 
      Currently hclgevf_update_port_base_vlan_info() may be called when
VF is resetting,  which may cause hns3_nic_net_open() being called
twice unexpectedly.

So fix it by adding a reset check for it, and extend critical
region for rntl_lock in hclgevf_update_port_base_vlan_info().

Fixes: 92f11ea1 ("net: hns3: fix set port based VLAN issue for VF")
Signed-off-by: default avatarJian Shen <shenjian15@huawei.com>
Signed-off-by: default avatarHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      a6f7bfdc
    • Yonglong Liu's avatar
      net: hns3: fix a TX timeout issue · a7e90ee5
      Yonglong Liu authored 
      When the queue depth and queue parameters are modified, there is
a low probability that TX timeout occurs. The two operations cause
the link to be down or up when the watchdog is still working. All
queues are stopped when the link is down. After the carrier is on,
all queues are woken up. If the watchdog detects the link between
the carrier on and wakeup queues, a false TX timeout occurs.

So fix this issue by modifying the sequence of carrier on and queue
wakeup, which is symmetrical to the link down action.

Fixes: 76ad4f0e ("net: hns3: Add support of HNS3 Ethernet Driver for hip08 SoC")
Signed-off-by: default avatarYonglong Liu <liuyonglong@huawei.com>
Signed-off-by: default avatarHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      a7e90ee5
    • Yunsheng Lin's avatar
      net: hns3: fix desc filling bug when skb is expanded or lineared · cfdaeba5
      Yunsheng Lin authored 
      The linear and frag data part may be changed when the skb is expanded
or lineared in skb_cow_head() or skb_checksum_help(), which is called
by hns3_fill_skb_desc(), so the linear len return by skb_headlen()
before the calling of hns3_fill_skb_desc() is unreliable.

Move hns3_fill_skb_desc() before the calling of skb_headlen() to fix
this bug.

Fixes: 76ad4f0e ("net: hns3: Add support of HNS3 Ethernet Driver for hip08 SoC")
Signed-off-by: default avatarYunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: default avatarHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      cfdaeba5
  5. 27 Jul, 2020 8 commits
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