platform/kernel/linux-starfive.git
2 years agonet: tcp: use kfree_skb_reason() for tcp_v{4,6}_do_rcv()
Menglong Dong [Sun, 20 Feb 2022 07:06:34 +0000 (15:06 +0800)]
net: tcp: use kfree_skb_reason() for tcp_v{4,6}_do_rcv()

Replace kfree_skb() used in tcp_v4_do_rcv() and tcp_v6_do_rcv() with
kfree_skb_reason().

Reviewed-by: Mengen Sun <mengensun@tencent.com>
Reviewed-by: Hao Peng <flyingpeng@tencent.com>
Signed-off-by: Menglong Dong <imagedong@tencent.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: tcp: add skb drop reasons to tcp_add_backlog()
Menglong Dong [Sun, 20 Feb 2022 07:06:33 +0000 (15:06 +0800)]
net: tcp: add skb drop reasons to tcp_add_backlog()

Pass the address of drop_reason to tcp_add_backlog() to store the
reasons for skb drops when fails. Following drop reasons are
introduced:

SKB_DROP_REASON_SOCKET_BACKLOG

Reviewed-by: Mengen Sun <mengensun@tencent.com>
Reviewed-by: Hao Peng <flyingpeng@tencent.com>
Signed-off-by: Menglong Dong <imagedong@tencent.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: tcp: add skb drop reasons to tcp_v{4,6}_inbound_md5_hash()
Menglong Dong [Sun, 20 Feb 2022 07:06:32 +0000 (15:06 +0800)]
net: tcp: add skb drop reasons to tcp_v{4,6}_inbound_md5_hash()

Pass the address of drop reason to tcp_v4_inbound_md5_hash() and
tcp_v6_inbound_md5_hash() to store the reasons for skb drops when this
function fails. Therefore, the drop reason can be passed to
kfree_skb_reason() when the skb needs to be freed.

Following drop reasons are added:

SKB_DROP_REASON_TCP_MD5NOTFOUND
SKB_DROP_REASON_TCP_MD5UNEXPECTED
SKB_DROP_REASON_TCP_MD5FAILURE

SKB_DROP_REASON_TCP_MD5* above correspond to LINUX_MIB_TCPMD5*

Reviewed-by: Mengen Sun <mengensun@tencent.com>
Reviewed-by: Hao Peng <flyingpeng@tencent.com>
Signed-off-by: Menglong Dong <imagedong@tencent.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: tcp: use kfree_skb_reason() for tcp_v6_rcv()
Menglong Dong [Sun, 20 Feb 2022 07:06:31 +0000 (15:06 +0800)]
net: tcp: use kfree_skb_reason() for tcp_v6_rcv()

Replace kfree_skb() used in tcp_v6_rcv() with kfree_skb_reason().

Reviewed-by: Mengen Sun <mengensun@tencent.com>
Reviewed-by: Hao Peng <flyingpeng@tencent.com>
Signed-off-by: Menglong Dong <imagedong@tencent.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: tcp: add skb drop reasons to tcp_v4_rcv()
Menglong Dong [Sun, 20 Feb 2022 07:06:30 +0000 (15:06 +0800)]
net: tcp: add skb drop reasons to tcp_v4_rcv()

Use kfree_skb_reason() for some path in tcp_v4_rcv() that missed before,
including:

SKB_DROP_REASON_SOCKET_FILTER
SKB_DROP_REASON_XFRM_POLICY

Reviewed-by: Mengen Sun <mengensun@tencent.com>
Reviewed-by: Hao Peng <flyingpeng@tencent.com>
Signed-off-by: Menglong Dong <imagedong@tencent.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: tcp: introduce tcp_drop_reason()
Menglong Dong [Sun, 20 Feb 2022 07:06:29 +0000 (15:06 +0800)]
net: tcp: introduce tcp_drop_reason()

For TCP protocol, tcp_drop() is used to free the skb when it needs
to be dropped. To make use of kfree_skb_reason() and pass the drop
reason to it, introduce the function tcp_drop_reason(). Meanwhile,
make tcp_drop() an inline call to tcp_drop_reason().

Reviewed-by: Mengen Sun <mengensun@tencent.com>
Reviewed-by: Hao Peng <flyingpeng@tencent.com>
Signed-off-by: Menglong Dong <imagedong@tencent.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: prestera: acl: fix 'client_map' buff overflow
Volodymyr Mytnyk [Fri, 18 Feb 2022 12:29:11 +0000 (14:29 +0200)]
net: prestera: acl: fix 'client_map' buff overflow

smatch warnings:
drivers/net/ethernet/marvell/prestera/prestera_acl.c:103
prestera_acl_chain_to_client() error: buffer overflow
'client_map' 3 <= 3

prestera_acl_chain_to_client(u32 chain_index, ...)
        ...
u32 client_map[] = {
PRESTERA_HW_COUNTER_CLIENT_LOOKUP_0,
PRESTERA_HW_COUNTER_CLIENT_LOOKUP_1,
PRESTERA_HW_COUNTER_CLIENT_LOOKUP_2
};
if (chain_index > ARRAY_SIZE(client_map))
...

Fixes: fa5d824ce5dd ("net: prestera: acl: add multi-chain support offload")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Volodymyr Mytnyk <vmytnyk@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: dsa: microchip: add ksz8563 to ksz9477 I2C driver
Ahmad Fatoum [Fri, 18 Feb 2022 13:15:40 +0000 (14:15 +0100)]
net: dsa: microchip: add ksz8563 to ksz9477 I2C driver

The KSZ9477 SPI driver already has support for the KSZ8563. The same switch
chip can also be managed via i2c and we have an KSZ9477 I2C driver, but
that one lacks the relevant compatible entry. Add it.

DT bindings already describe this compatible.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet/smc: unlock on error paths in __smc_setsockopt()
Dan Carpenter [Fri, 18 Feb 2022 15:32:59 +0000 (18:32 +0300)]
net/smc: unlock on error paths in __smc_setsockopt()

These two error paths need to release_sock(sk) before returning.

Fixes: a6a6fe27bab4 ("net/smc: Dynamic control handshake limitation by socket options")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: D. Wythe <alibuda@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: dsa: microchip: ksz9477: export HW stats over stats64 interface
Oleksij Rempel [Sat, 19 Feb 2022 08:26:30 +0000 (09:26 +0100)]
net: dsa: microchip: ksz9477: export HW stats over stats64 interface

Provide access to HW offloaded packets over stats64 interface.
The rx/tx_bytes values needed some fixing since HW is accounting size of
the Ethernet frame together with FCS.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoMerge branch 'phylink-remove-pcs_poll'
David S. Miller [Sat, 19 Feb 2022 16:41:50 +0000 (16:41 +0000)]
Merge branch 'phylink-remove-pcs_poll'

Russell King says:

====================
net: phylink: remove pcs_poll

This small series removes the now unused pcs_poll members from DSA and
phylink. "git grep pcs_poll drivers/net/ net/" on net-next confirms that
the only places that reference this are in DSA core code and phylink
code:

drivers/net/phy/phylink.c:              if (pl->config->pcs_poll || pcs->poll)
drivers/net/phy/phylink.c:              poll |= pl->config->pcs_poll;
net/dsa/port.c: dp->pl_config.pcs_poll = ds->pcs_poll;
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: phylink: remove phylink_config's pcs_poll
Russell King (Oracle) [Sat, 19 Feb 2022 11:47:22 +0000 (11:47 +0000)]
net: phylink: remove phylink_config's pcs_poll

phylink_config's pcs_poll is no longer used, let's get rid of it.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: dsa: remove pcs_poll
Russell King (Oracle) [Sat, 19 Feb 2022 11:47:17 +0000 (11:47 +0000)]
net: dsa: remove pcs_poll

With drivers converted over to using phylink PCS, there is no need for
the struct dsa_switch member "pcs_poll" to exist anymore - there is a
flag in the struct phylink_pcs which indicates whether this PCS needs
to be polled which supersedes this.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: hsr: fix suspicious RCU usage warning in hsr_node_get_first()
Juhee Kang [Sat, 19 Feb 2022 15:29:59 +0000 (15:29 +0000)]
net: hsr: fix suspicious RCU usage warning in hsr_node_get_first()

When hsr_create_self_node() calls hsr_node_get_first(), the suspicious
RCU usage warning is occurred. The reason why this warning is raised is
the callers of hsr_node_get_first() use rcu_read_lock_bh() and
other different synchronization mechanisms. Thus, this patch solved by
replacing rcu_dereference() with rcu_dereference_bh_check().

The kernel test robot reports:
    [   50.083470][ T3596] =============================
    [   50.088648][ T3596] WARNING: suspicious RCU usage
    [   50.093785][ T3596] 5.17.0-rc3-next-20220208-syzkaller #0 Not tainted
    [   50.100669][ T3596] -----------------------------
    [   50.105513][ T3596] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage!
    [   50.113799][ T3596]
    [   50.113799][ T3596] other info that might help us debug this:
    [   50.113799][ T3596]
    [   50.124257][ T3596]
    [   50.124257][ T3596] rcu_scheduler_active = 2, debug_locks = 1
    [   50.132368][ T3596] 2 locks held by syz-executor.0/3596:
    [   50.137863][ T3596]  #0: ffffffff8d3357e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80
    [   50.147470][ T3596]  #1: ffff88807ec9d5f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650
    [   50.157623][ T3596]
    [   50.157623][ T3596] stack backtrace:
    [   50.163510][ T3596] CPU: 1 PID: 3596 Comm: syz-executor.0 Not tainted 5.17.0-rc3-next-20220208-syzkaller #0
    [   50.173381][ T3596] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
    [   50.183623][ T3596] Call Trace:
    [   50.186904][ T3596]  <TASK>
    [   50.189844][ T3596]  dump_stack_lvl+0xcd/0x134
    [   50.194640][ T3596]  hsr_node_get_first+0x9b/0xb0
    [   50.199499][ T3596]  hsr_create_self_node+0x22d/0x650
    [   50.204688][ T3596]  hsr_dev_finalize+0x2c1/0x7d0
    [   50.209669][ T3596]  hsr_newlink+0x315/0x730
    [   50.214113][ T3596]  ? hsr_dellink+0x130/0x130
    [   50.218789][ T3596]  ? rtnl_create_link+0x7e8/0xc00
    [   50.223803][ T3596]  ? hsr_dellink+0x130/0x130
    [   50.228397][ T3596]  __rtnl_newlink+0x107c/0x1760
    [   50.233249][ T3596]  ? rtnl_setlink+0x3c0/0x3c0
    [   50.238043][ T3596]  ? is_bpf_text_address+0x77/0x170
    [   50.243362][ T3596]  ? lock_downgrade+0x6e0/0x6e0
    [   50.248219][ T3596]  ? unwind_next_frame+0xee1/0x1ce0
    [   50.253605][ T3596]  ? entry_SYSCALL_64_after_hwframe+0x44/0xae
    [   50.259669][ T3596]  ? __sanitizer_cov_trace_cmp4+0x1c/0x70
    [   50.265423][ T3596]  ? is_bpf_text_address+0x99/0x170
    [   50.270819][ T3596]  ? kernel_text_address+0x39/0x80
    [   50.275950][ T3596]  ? __kernel_text_address+0x9/0x30
    [   50.281336][ T3596]  ? unwind_get_return_address+0x51/0x90
    [   50.286975][ T3596]  ? create_prof_cpu_mask+0x20/0x20
    [   50.292178][ T3596]  ? arch_stack_walk+0x93/0xe0
    [   50.297172][ T3596]  ? kmem_cache_alloc_trace+0x42/0x2c0
    [   50.302637][ T3596]  ? rcu_read_lock_sched_held+0x3a/0x70
    [   50.308194][ T3596]  rtnl_newlink+0x64/0xa0
    [   50.312524][ T3596]  ? __rtnl_newlink+0x1760/0x1760
    [   50.317545][ T3596]  rtnetlink_rcv_msg+0x413/0xb80
    [   50.322631][ T3596]  ? rtnl_newlink+0xa0/0xa0
    [   50.327159][ T3596]  netlink_rcv_skb+0x153/0x420
    [   50.331931][ T3596]  ? rtnl_newlink+0xa0/0xa0
    [   50.336436][ T3596]  ? netlink_ack+0xa80/0xa80
    [   50.341095][ T3596]  ? netlink_deliver_tap+0x1a2/0xc40
    [   50.346532][ T3596]  ? netlink_deliver_tap+0x1b1/0xc40
    [   50.351839][ T3596]  netlink_unicast+0x539/0x7e0
    [   50.356633][ T3596]  ? netlink_attachskb+0x880/0x880
    [   50.361750][ T3596]  ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70
    [   50.368003][ T3596]  ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70
    [   50.374707][ T3596]  ? __phys_addr_symbol+0x2c/0x70
    [   50.379753][ T3596]  ? __sanitizer_cov_trace_cmp8+0x1d/0x70
    [   50.385568][ T3596]  ? __check_object_size+0x16c/0x4f0
    [   50.390859][ T3596]  netlink_sendmsg+0x904/0xe00
    [   50.395715][ T3596]  ? netlink_unicast+0x7e0/0x7e0
    [   50.400722][ T3596]  ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70
    [   50.407003][ T3596]  ? netlink_unicast+0x7e0/0x7e0
    [   50.412119][ T3596]  sock_sendmsg+0xcf/0x120
    [   50.416548][ T3596]  __sys_sendto+0x21c/0x320
    [   50.421052][ T3596]  ? __ia32_sys_getpeername+0xb0/0xb0
    [   50.426427][ T3596]  ? lockdep_hardirqs_on_prepare+0x400/0x400
    [   50.432721][ T3596]  ? __context_tracking_exit+0xb8/0xe0
    [   50.438188][ T3596]  ? lock_downgrade+0x6e0/0x6e0
    [   50.443041][ T3596]  ? lock_downgrade+0x6e0/0x6e0
    [   50.447902][ T3596]  __x64_sys_sendto+0xdd/0x1b0
    [   50.452759][ T3596]  ? lockdep_hardirqs_on+0x79/0x100
    [   50.457964][ T3596]  ? syscall_enter_from_user_mode+0x21/0x70
    [   50.464150][ T3596]  do_syscall_64+0x35/0xb0
    [   50.468565][ T3596]  entry_SYSCALL_64_after_hwframe+0x44/0xae
    [   50.474452][ T3596] RIP: 0033:0x7f3148504e1c
    [   50.479052][ T3596] Code: fa fa ff ff 44 8b 4c 24 2c 4c 8b 44 24 20 89 c5 44 8b 54 24 28 48 8b 54 24 18 b8 2c 00 00 00 48 8b 74 24 10 8b 7c 24 08 0f 05 <48> 3d 00 f0 ff ff 77 34 89 ef 48 89 44 24 08 e8 20 fb ff ff 48 8b
    [   50.498926][ T3596] RSP: 002b:00007ffeab5f2ab0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
    [   50.507342][ T3596] RAX: ffffffffffffffda RBX: 00007f314959d320 RCX: 00007f3148504e1c
    [   50.515393][ T3596] RDX: 0000000000000048 RSI: 00007f314959d370 RDI: 0000000000000003
    [   50.523444][ T3596] RBP: 0000000000000000 R08: 00007ffeab5f2b04 R09: 000000000000000c
    [   50.531492][ T3596] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
    [   50.539455][ T3596] R13: 00007f314959d370 R14: 0000000000000003 R15: 0000000000000000

Fixes: 4acc45db7115 ("net: hsr: use hlist_head instead of list_head for mac addresses")
Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Reported-and-tested-by: syzbot+f0eb4f3876de066b128c@syzkaller.appspotmail.com
Signed-off-by: Juhee Kang <claudiajkang@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoatm: nicstar: Use kcalloc() to simplify code
Christophe JAILLET [Fri, 18 Feb 2022 17:46:51 +0000 (18:46 +0100)]
atm: nicstar: Use kcalloc() to simplify code

Use kcalloc() instead of kmalloc_array() and a loop to set all the values
of the array to NULL.

While at it, remove a duplicated assignment to 'scq->num_entries'.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoMerge branch 'dpaa2-eth-one-step-register'
David S. Miller [Sat, 19 Feb 2022 16:27:17 +0000 (16:27 +0000)]
Merge branch 'dpaa2-eth-one-step-register'

Radu Bulie says:

====================
Provide direct access to 1588 one step register

DPAA2 MAC supports 1588 one step timestamping.
If this option is enabled then for each transmitted PTP event packet,
the 1588 SINGLE_STEP register is accessed to modify the following fields:

-offset of the correction field inside the PTP packet
-UDP checksum update bit,  in case the PTP event packet has
 UDP encapsulation

These values can change any time, because there may be multiple
PTP clients connected, that receive various 1588 frame types:
- L2 only frame
- UDP / Ipv4
- UDP / Ipv6
- other

The current implementation uses dpni_set_single_step_cfg to update the
SINLGE_STEP register.
Using an MC command  on the Tx datapath for each transmitted 1588 message
introduces high delays, leading to low throughput and consequently to a
small number of supported PTP clients. Besides these, the nanosecond
correction field from the PTP packet will contain the high delay from the
driver which together with the originTimestamp will render timestamp
values that are unacceptable in a GM clock implementation.

This patch series replaces the dpni_set_single_step_cfg function call from
the Tx datapath for 1588 messages (when one step timestamping is enabled)
with a callback that either implements direct access to the SINGLE_STEP
register, eliminating the overhead caused by the MC command that will need
to be dispatched by the MC firmware through the MC command portal
interface or falls back to the dpni_set_single_step_cfg in case the MC
version does not have support for returning the single step register
base address.

In other words all the delay introduced by dpni_set_single_step_cfg
function will be eliminated (if MC version has support for returning the
base address of the single step register), improving the egress driver
performance for PTP packets when single step timestamping is enabled.

The first patch adds a new attribute that contains the base address of
the SINGLE_STEP register. It will be used to directly update the register
on the Tx datapath.

The second patch updates the driver such that the SINGLE_STEP
register is either accessed directly if MC version >= 10.32 or is
accessed through dpni_set_single_step_cfg command when 1588 messages
are transmitted.

Changes in v2:
 - move global function pointer into the driver's private structure in 2/2
 - move repetitive code outside the body of the callback functions  in 2/2
 - update function dpaa2_ptp_onestep_reg_update_method  and remove goto
   statement from non error path in 2/2

Changes in v3:
 - remove static storage class specifier from within the structure in 2/2
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agodpaa2-eth: Update SINGLE_STEP register access
Radu Bulie [Fri, 18 Feb 2022 20:22:01 +0000 (22:22 +0200)]
dpaa2-eth: Update SINGLE_STEP register access

DPAA2 MAC supports 1588 one step timestamping.
If this option is enabled then for each transmitted PTP event packet,
the 1588 SINGLE_STEP register is accessed to modify the following fields:

-offset of the correction field inside the PTP packet
-UDP checksum update bit,  in case the PTP event packet has
 UDP encapsulation

These values can change any time, because there may be multiple
PTP clients connected, that receive various 1588 frame types:
- L2 only frame
- UDP / Ipv4
- UDP / Ipv6
- other

The current implementation uses dpni_set_single_step_cfg to update the
SINLGE_STEP register.
Using an MC command  on the Tx datapath for each transmitted 1588 message
introduces high delays, leading to low throughput and consequently to a
small number of supported PTP clients. Besides these, the nanosecond
correction field from the PTP packet will contain the high delay from the
driver which together with the originTimestamp will render timestamp
values that are unacceptable in a GM clock implementation.

This patch updates the Tx datapath for 1588 messages when single step
timestamp is enabled and provides direct access to SINGLE_STEP register,
eliminating the  overhead caused by the dpni_set_single_step_cfg
MC command. MC version >= 10.32 implements this functionality.
If the MC version does not have support for returning the
single step register base address, the driver will use
dpni_set_single_step_cfg command for updates operations.

All the delay introduced by dpni_set_single_step_cfg
function will be eliminated (if MC version has support for returning the
base address of the single step register), improving the egress driver
performance for PTP packets when single step timestamping is enabled.

Before these changes the maximum throughput for 1588 messages with
single step hardware timestamp enabled was around 2000pps.
After the updates the throughput increased up to 32.82 Mbps / 46631.02 pps.

Signed-off-by: Radu Bulie <radu-andrei.bulie@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agodpaa2-eth: Update dpni_get_single_step_cfg command
Radu Bulie [Fri, 18 Feb 2022 20:22:00 +0000 (22:22 +0200)]
dpaa2-eth: Update dpni_get_single_step_cfg command

dpni_get_single_step_cfg is an MC firmware command used for
retrieving the contents of SINGLE_STEP 1588 register available
in a DPMAC.

This patch adds a new version of this command that returns as an extra
argument the physical base address of the aforementioned register.
The address will be used to directly modify the contents of the
SINGLE_STEP register instead of invoking the MC command
dpni_set_single_step_cgf. The former approach introduced huge delays on
the TX datapath when one step PTP events were transmitted. This led to low
throughput and high latencies observed in the PTP correction field.

Signed-off-by: Radu Bulie <radu-andrei.bulie@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: get rid of rtnl_lock_unregistering()
Eric Dumazet [Fri, 18 Feb 2022 17:58:56 +0000 (09:58 -0800)]
net: get rid of rtnl_lock_unregistering()

After recent patches, and in particular commits
 faab39f63c1f ("net: allow out-of-order netdev unregistration") and
 e5f80fcf869a ("ipv6: give an IPv6 dev to blackhole_netdev")
we no longer need the barrier implemented in rtnl_lock_unregistering().

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: prestera: flower: fix destroy tmpl in chain
Volodymyr Mytnyk [Fri, 18 Feb 2022 09:39:49 +0000 (11:39 +0200)]
net: prestera: flower: fix destroy tmpl in chain

Fix flower destroy template callback to release template
only for specific tc chain instead of all chain tempaltes.

The issue was intruduced by previous commit that introduced
multi-chain support.

Fixes: fa5d824ce5dd ("net: prestera: acl: add multi-chain support offload")
Signed-off-by: Volodymyr Mytnyk <vmytnyk@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agobridge: switch br_net_exit to batch mode
Eric Dumazet [Fri, 18 Feb 2022 07:01:50 +0000 (23:01 -0800)]
bridge: switch br_net_exit to batch mode

cleanup_net() is competing with other rtnl users.

Instead of calling br_net_exit() for each netns,
call br_net_exit_batch() once.

This gives cleanup_net() ability to group more devices
and call unregister_netdevice_many() only once for all bridge devices.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Roopa Prabhu <roopa@nvidia.com>
Cc: Nikolay Aleksandrov <razor@blackwall.org>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoMerge branch 'mctp-i2c'
David S. Miller [Sat, 19 Feb 2022 16:18:50 +0000 (16:18 +0000)]
Merge branch 'mctp-i2c'

Matt Johnston says:

====================
MCTP I2C driver

This patch series adds a netdev driver providing MCTP transport over
I2C.

I think I've addressed all the points raised in v5. It now has
mctp_i2c_unregister() to run things in the correct order, waiting for
the worker thread and I2C rx to complete.

Cheers,
Matt

--

v6:
 - Changed netdev register/unregister/free to avoid races. Ensure that
   netif functions are not used by irq handler/threads after unregister.
 - Fix incoming I2C hwaddr that was previously incorrect (left
   shifted 1 bit)
 - Add a check that byte_count wire header matches the length received
 - Renamed I2C driver to mctp-i2c-interface
 - Removed __func__ from print messages, added missing newlines
 - Removed sysfs mctp_current_mux file which was used for debug
 - Renamed curr_lock to sel_lock
 - Tidied comment formatting
 - Fix newline in Kconfig
v5:
 - Fix incorrect format string
v4:
 - Switch to __i2c_transfer() rather than __i2c_smbus_xfer(), drop 255 byte
   smbus patches
 - Use wait_event_idle() for the sleeping TX thread
 - Use dev_addr_set()
v3:
 - Added Reviewed-bys for npcm7xx
 - Resend with net-next open
v2:
 - Simpler Kconfig condition for i2c-mux dependency, from Randy Dunlap
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agomctp i2c: MCTP I2C binding driver
Matt Johnston [Fri, 18 Feb 2022 05:51:06 +0000 (13:51 +0800)]
mctp i2c: MCTP I2C binding driver

Provides MCTP network transport over an I2C bus, as specified in
DMTF DSP0237. All messages between nodes are sent as SMBus Block Writes.

Each I2C bus to be used for MCTP is flagged in devicetree by a
'mctp-controller' property on the bus node. Each flagged bus gets a
mctpi2cX net device created based on the bus number. A
'mctp-i2c-controller' I2C client needs to be added under the adapter. In
an I2C mux situation the mctp-i2c-controller node must be attached only
to the root I2C bus. The I2C client will handle incoming I2C slave block
write data for subordinate busses as well as its own bus.

In configurations without devicetree a driver instance can be attached
to a bus using the I2C slave new_device mechanism.

The MCTP core will hold/release the MCTP I2C device while responses
are pending (a 6 second timeout or once a socket is closed, response
received etc). While held the MCTP I2C driver will lock the I2C bus so
that the correct I2C mux remains selected while responses are received.

(Ideally we would just lock the mux to keep the current bus selected for
the response rather than a full I2C bus lock, but that isn't exposed in
the I2C mux API)

Signed-off-by: Matt Johnston <matt@codeconstruct.com.au>
Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Reviewed-by: Wolfram Sang <wsa@kernel.org> # I2C transport parts
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agodt-bindings: net: New binding mctp-i2c-controller
Matt Johnston [Fri, 18 Feb 2022 05:51:05 +0000 (13:51 +0800)]
dt-bindings: net: New binding mctp-i2c-controller

Used to define a local endpoint to communicate with MCTP peripherals
attached to an I2C bus. This I2C endpoint can communicate with remote
MCTP devices on the I2C bus.

In the example I2C topology below (matching the second yaml example) we
have MCTP devices on busses i2c1 and i2c6. MCTP-supporting busses are
indicated by the 'mctp-controller' DT property on an I2C bus node.

A mctp-i2c-controller I2C client DT node is placed at the top of the
mux topology, since only the root I2C adapter will support I2C slave
functionality.
                                               .-------.
                                               |eeprom |
    .------------.     .------.               /'-------'
    | adapter    |     | mux  --@0,i2c5------'
    | i2c1       ----.*|      --@1,i2c6--.--.
    |............|    \'------'           \  \  .........
    | mctp-i2c-  |     \                   \  \ .mctpB  .
    | controller |      \                   \  '.0x30   .
    |            |       \  .........        \  '.......'
    | 0x50       |        \ .mctpA  .         \ .........
    '------------'         '.0x1d   .          '.mctpC  .
                            '.......'          '.0x31   .
                                                '.......'
(mctpX boxes above are remote MCTP devices not included in the DT at
present, they can be hotplugged/probed at runtime. A DT binding for
specific fixed MCTP devices could be added later if required)

Signed-off-by: Matt Johnston <matt@codeconstruct.com.au>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: ip6mr: add support for passing full packet on wrong mif
Mobashshera Rasool [Thu, 17 Feb 2022 07:46:40 +0000 (07:46 +0000)]
net: ip6mr: add support for passing full packet on wrong mif

This patch adds support for MRT6MSG_WRMIFWHOLE which is used to pass
full packet and real vif id when the incoming interface is wrong.
While the RP and FHR are setting up state we need to be sending the
registers encapsulated with all the data inside otherwise we lose it.
The RP then decapsulates it and forwards it to the interested parties.
Currently with WRONGMIF we can only be sending empty register packets
and will lose that data.
This behaviour can be enabled by using MRT_PIM with
val == MRT6MSG_WRMIFWHOLE. This doesn't prevent MRT6MSG_WRONGMIF from
happening, it happens in addition to it, also it is controlled by the same
throttling parameters as WRONGMIF (i.e. 1 packet per 3 seconds currently).
Both messages are generated to keep backwards compatibily and avoid
breaking someone who was enabling MRT_PIM with val == 4, since any
positive val is accepted and treated the same.

Signed-off-by: Mobashshera Rasool <mobash.rasool.linux@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoi40e: remove dead stores on XSK hotpath
Alexander Lobakin [Fri, 18 Feb 2022 21:50:33 +0000 (13:50 -0800)]
i40e: remove dead stores on XSK hotpath

The 'if (ntu == rx_ring->count)' block in i40e_alloc_rx_buffers_zc()
was previously residing in the loop, but after introducing the
batched interface it is used only to wrap-around the NTU descriptor,
thus no more need to assign 'xdp'.

'cleaned_count' in i40e_clean_rx_irq_zc() was previously being
incremented in the loop, but after commit f12738b6ec06
("i40e: remove unnecessary cleaned_count updates") it gets
assigned only once after it, so the initialization can be dropped.

Fixes: 6aab0bb0c5cd ("i40e: Use the xsk batched rx allocation interface")
Fixes: f12738b6ec06 ("i40e: remove unnecessary cleaned_count updates")
Signed-off-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Acked-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>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoMerge branch 'add-checks-for-incoming-packet-addresses'
Jakub Kicinski [Sat, 19 Feb 2022 05:24:32 +0000 (21:24 -0800)]
Merge branch 'add-checks-for-incoming-packet-addresses'

Jeremy Kerr says:

====================
Add checks for incoming packet addresses

This series adds a couple of checks for valid addresses on incoming MCTP
packets. We introduce a couple of helpers in 1/2, and use them in the
ingress path in 2/2.
====================

Link: https://lore.kernel.org/r/20220218042554.564787-1-jk@codeconstruct.com.au
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agomctp: add address validity checking for packet receive
Jeremy Kerr [Fri, 18 Feb 2022 04:25:54 +0000 (12:25 +0800)]
mctp: add address validity checking for packet receive

This change adds some basic sanity checks for the source and dest
headers of packets on initial receive.

Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agomctp: replace mctp_address_ok with more fine-grained helpers
Jeremy Kerr [Fri, 18 Feb 2022 04:25:53 +0000 (12:25 +0800)]
mctp: replace mctp_address_ok with more fine-grained helpers

Currently, we have mctp_address_ok(), which checks if an EID is in the
"valid" range of 8-254 inclusive. However, 0 and 255 may also be valid
addresses, depending on context. 0 is the NULL EID, which may be set
when physical addressing is used. 255 is valid as a destination address
for broadcasts.

This change renames mctp_address_ok to mctp_address_unicast, and adds
similar helpers for broadcast and null EIDs, which will be used in an
upcoming commit.

Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: Add new protocol attribute to IP addresses
Jacques de Laval [Thu, 17 Feb 2022 15:02:02 +0000 (16:02 +0100)]
net: Add new protocol attribute to IP addresses

This patch adds a new protocol attribute to IPv4 and IPv6 addresses.
Inspiration was taken from the protocol attribute of routes. User space
applications like iproute2 can set/get the protocol with the Netlink API.

The attribute is stored as an 8-bit unsigned integer.

The protocol attribute is set by kernel for these categories:

- IPv4 and IPv6 loopback addresses
- IPv6 addresses generated from router announcements
- IPv6 link local addresses

User space may pass custom protocols, not defined by the kernel.

Grouping addresses on their origin is useful in scenarios where you want
to distinguish between addresses based on who added them, e.g. kernel
vs. user space.

Tagging addresses with a string label is an existing feature that could be
used as a solution. Unfortunately the max length of a label is
15 characters, and for compatibility reasons the label must be prefixed
with the name of the device followed by a colon. Since device names also
have a max length of 15 characters, only -1 characters is guaranteed to be
available for any origin tag, which is not that much.

A reference implementation of user space setting and getting protocols
is available for iproute2:

https://github.com/westermo/iproute2/commit/9a6ea18bd79f47f293e5edc7780f315ea42ff540

Signed-off-by: Jacques de Laval <Jacques.De.Laval@westermo.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20220217150202.80802-1-Jacques.De.Laval@westermo.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoMerge branch 'ionic-driver-updates'
Jakub Kicinski [Sat, 19 Feb 2022 04:37:17 +0000 (20:37 -0800)]
Merge branch 'ionic-driver-updates'

Shannon Nelson says:

====================
ionic: driver updates

These are a couple of checkpatch cleanup patches, a bug fix,
and something to alleviate memory pressure in tight places.
====================

Link: https://lore.kernel.org/r/20220217220252.52293-1-snelson@pensando.io
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoionic: clean up comments and whitespace
Shannon Nelson [Thu, 17 Feb 2022 22:02:52 +0000 (14:02 -0800)]
ionic: clean up comments and whitespace

Fix up some checkpatch complaints that have crept in:
doubled words words, mispellled words, doubled lines.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoionic: prefer strscpy over strlcpy
Shannon Nelson [Thu, 17 Feb 2022 22:02:51 +0000 (14:02 -0800)]
ionic: prefer strscpy over strlcpy

Replace strlcpy with strscpy to clean up a checkpatch complaint.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoionic: Use vzalloc for large per-queue related buffers
Brett Creeley [Thu, 17 Feb 2022 22:02:50 +0000 (14:02 -0800)]
ionic: Use vzalloc for large per-queue related buffers

Use vzalloc for per-queue info structs that don't need any
DMA mapping to help relieve memory pressure found when used
in our limited SOC environment.

Signed-off-by: Brett Creeley <brett@pensando.io>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoionic: catch transition back to RUNNING with fw_generation 0
Shannon Nelson [Thu, 17 Feb 2022 22:02:49 +0000 (14:02 -0800)]
ionic: catch transition back to RUNNING with fw_generation 0

In some graceful updates that get initially triggered by the
RESET event, especially with older firmware, the fw_generation
bits don't change but the fw_status is seen to go to 0 then back
to 1.  However, the driver didn't perform the restart, remained
waiting for fw_generation to change, and got left in limbo.

This is because the clearing of idev->fw_status_ready to 0
didn't happen correctly as it was buried in the transition
trigger: since the transition down was triggered not here
but in the RESET event handler, the clear to 0 didn't happen,
so the transition back to 1 wasn't detected.

Fix this particular case by bringing the setting of
idev->fw_status_ready back out to where it was before.

Fixes: 398d1e37f960 ("ionic: add FW_STOPPING state")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: avoid quadratic behavior in netdev_wait_allrefs_any()
Eric Dumazet [Fri, 18 Feb 2022 06:54:30 +0000 (22:54 -0800)]
net: avoid quadratic behavior in netdev_wait_allrefs_any()

If the list of devices has N elements, netdev_wait_allrefs_any()
is called N times, and linkwatch_forget_dev() is called N*(N-1)/2 times.

Fix this by calling linkwatch_forget_dev() only once per device.

Fixes: faab39f63c1f ("net: allow out-of-order netdev unregistration")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20220218065430.2613262-1-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoipv6: annotate some data-races around sk->sk_prot
Eric Dumazet [Thu, 17 Feb 2022 23:48:41 +0000 (15:48 -0800)]
ipv6: annotate some data-races around sk->sk_prot

IPv6 has this hack changing sk->sk_prot when an IPv6 socket
is 'converted' to an IPv4 one with IPV6_ADDRFORM option.

This operation is only performed for TCP and UDP, knowing
their 'struct proto' for the two network families are populated
in the same way, and can not disappear while a reader
might use and dereference sk->sk_prot.

If we think about it all reads of sk->sk_prot while
either socket lock or RTNL is not acquired should be using READ_ONCE().

Also note that other layers like MPTCP, XFRM, CHELSIO_TLS also
write over sk->sk_prot.

BUG: KCSAN: data-race in inet6_recvmsg / ipv6_setsockopt

write to 0xffff8881386f7aa8 of 8 bytes by task 26932 on cpu 0:
 do_ipv6_setsockopt net/ipv6/ipv6_sockglue.c:492 [inline]
 ipv6_setsockopt+0x3758/0x3910 net/ipv6/ipv6_sockglue.c:1019
 udpv6_setsockopt+0x85/0x90 net/ipv6/udp.c:1649
 sock_common_setsockopt+0x5d/0x70 net/core/sock.c:3489
 __sys_setsockopt+0x209/0x2a0 net/socket.c:2180
 __do_sys_setsockopt net/socket.c:2191 [inline]
 __se_sys_setsockopt net/socket.c:2188 [inline]
 __x64_sys_setsockopt+0x62/0x70 net/socket.c:2188
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff8881386f7aa8 of 8 bytes by task 26911 on cpu 1:
 inet6_recvmsg+0x7a/0x210 net/ipv6/af_inet6.c:659
 ____sys_recvmsg+0x16c/0x320
 ___sys_recvmsg net/socket.c:2674 [inline]
 do_recvmmsg+0x3f5/0xae0 net/socket.c:2768
 __sys_recvmmsg net/socket.c:2847 [inline]
 __do_sys_recvmmsg net/socket.c:2870 [inline]
 __se_sys_recvmmsg net/socket.c:2863 [inline]
 __x64_sys_recvmmsg+0xde/0x160 net/socket.c:2863
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0xffffffff85e0e980 -> 0xffffffff85e01580

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 26911 Comm: syz-executor.3 Not tainted 5.17.0-rc2-syzkaller-00316-g0457e5153e0e-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011

Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet/ibmvnic: Cleanup workaround doing an EOI after partition migration
Cédric Le Goater [Fri, 18 Feb 2022 08:07:08 +0000 (09:07 +0100)]
net/ibmvnic: Cleanup workaround doing an EOI after partition migration

There were a fair amount of changes to workaround a firmware bug leaving
a pending interrupt after migration of the ibmvnic device :

commit 2df5c60e198c ("net/ibmvnic: Ignore H_FUNCTION return from H_EOI
            to tolerate XIVE mode")
commit 284f87d2f387 ("Revert "net/ibmvnic: Fix EOI when running in
            XIVE mode"")
commit 11d49ce9f794 ("net/ibmvnic: Fix EOI when running in XIVE mode.")
commit f23e0643cd0b ("ibmvnic: Clear pending interrupt after device reset")

Here is the final one taking into account the XIVE interrupt mode.

Cc: Sukadev Bhattiprolu <sukadev@linux.ibm.com>
Cc: Dany Madden <drt@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoteaming: deliver link-local packets with the link they arrive on
jeffreyji [Thu, 17 Feb 2022 21:23:12 +0000 (21:23 +0000)]
teaming: deliver link-local packets with the link they arrive on

skb is ignored if team port is disabled. We want the skb to be delivered
if it's an link layer packet.

Issue is already fixed for bonding in
commit b89f04c61efe ("bonding: deliver link-local packets with skb->dev set to link that packets arrived on")

changelog:

v2: change LLDP -> link layer in comments/commit descrip, comment format

Signed-off-by: jeffreyji <jeffreyji@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoMerge branch 'qca8k-phylink'
David S. Miller [Fri, 18 Feb 2022 11:28:33 +0000 (11:28 +0000)]
Merge branch 'qca8k-phylink'

Russell King says:

====================
net: dsa: qca8k: convert to phylink_pcs and mark as non-legacy

This series adds support into DSA for the mac_select_pcs method, and
converts qca8k to make use of this, eventually marking qca8k as non-
legacy.

Patch 1 adds DSA support for mac_select_pcs.
Patch 2 and patch 3 moves code around in qca8k to make patch 4 more
readable.
Patch 4 does a simple conversion to phylink_pcs.
Patch 5 moves the serdes configuration to phylink_pcs.
Patch 6 marks qca8k as non-legacy.

v2: fix dsa_phylink_mac_select_pcs() formatting and double-blank line
in patch 5
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: dsa: qca8k: mark as non-legacy
Russell King (Oracle) [Thu, 17 Feb 2022 18:31:01 +0000 (18:31 +0000)]
net: dsa: qca8k: mark as non-legacy

The qca8k driver does not make use of the speed, duplex, pause or
advertisement in its phylink_mac_config() implementation, so it can be
marked as a non-legacy driver.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: dsa: qca8k: move pcs configuration
Russell King (Oracle) [Thu, 17 Feb 2022 18:30:56 +0000 (18:30 +0000)]
net: dsa: qca8k: move pcs configuration

Move the PCS configuration to qca8k_pcs_config().

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: dsa: qca8k: convert to use phylink_pcs
Russell King (Oracle) [Thu, 17 Feb 2022 18:30:51 +0000 (18:30 +0000)]
net: dsa: qca8k: convert to use phylink_pcs

Convert the qca8k driver to use the phylink_pcs support to talk to the
SGMII PCS.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: dsa: qca8k: move qca8k_phylink_mac_link_state()
Russell King (Oracle) [Thu, 17 Feb 2022 18:30:45 +0000 (18:30 +0000)]
net: dsa: qca8k: move qca8k_phylink_mac_link_state()

Move qca8k_phylink_mac_link_state() to separate the code movement from
code changes.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: dsa: qca8k: move qca8k_setup()
Russell King (Oracle) [Thu, 17 Feb 2022 18:30:40 +0000 (18:30 +0000)]
net: dsa: qca8k: move qca8k_setup()

Move qca8k_setup() to be later in the file to avoid needing prototypes
for called functions.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: dsa: add support for phylink mac_select_pcs()
Russell King (Oracle) [Thu, 17 Feb 2022 18:30:35 +0000 (18:30 +0000)]
net: dsa: add support for phylink mac_select_pcs()

Add DSA support for the phylink mac_select_pcs() method so DSA drivers
can return provide phylink with the appropriate PCS for the PHY
interface mode.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: ethernet: xilinx: cleanup comments
Tom Rix [Thu, 17 Feb 2022 16:05:18 +0000 (08:05 -0800)]
net: ethernet: xilinx: cleanup comments

Remove the second 'the'.
Replacements:
endiannes to endianness
areconnected to are connected
Mamagement to Management
undoccumented to undocumented
Xilink to Xilinx
strucutre to structure

Change kernel-doc comment style to c style for
/* Management ...

Signed-off-by: Tom Rix <trix@redhat.com>
Reviewed-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: gro: Fix a 'directive in macro's argument list' sparse warning
Gal Pressman [Thu, 17 Feb 2022 08:07:55 +0000 (10:07 +0200)]
net: gro: Fix a 'directive in macro's argument list' sparse warning

Following the cited commit, sparse started complaining about:
../include/net/gro.h:58:1: warning: directive in macro's argument list
../include/net/gro.h:59:1: warning: directive in macro's argument list

Fix that by moving the defines out of the struct_group() macro.

Fixes: de5a1f3ce4c8 ("net: gro: minor optimization for dev_gro_receive()")
Reviewed-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Signed-off-by: Gal Pressman <gal@nvidia.com>
Acked-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agos390/qeth: Remove redundant 'flush_workqueue()' calls
Xu Wang [Wed, 16 Feb 2022 07:51:55 +0000 (07:51 +0000)]
s390/qeth: Remove redundant 'flush_workqueue()' calls

'destroy_workqueue()' already drains the queue before destroying it, so
there is no need to flush it explicitly.

Remove the redundant 'flush_workqueue()' calls.

Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Acked-by: Alexandra Winter <wintera@linux.ibm.com>
Link: https://lore.kernel.org/r/20220216075155.940-1-vulab@iscas.ac.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: dsa: delete unused exported symbols for ethtool PHY stats
Vladimir Oltean [Wed, 16 Feb 2022 19:37:26 +0000 (21:37 +0200)]
net: dsa: delete unused exported symbols for ethtool PHY stats

Introduced in commit cf963573039a ("net: dsa: Allow providing PHY
statistics from CPU port"), it appears these were never used.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20220216193726.2926320-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: add sanity check in proto_register()
Eric Dumazet [Wed, 16 Feb 2022 17:18:01 +0000 (09:18 -0800)]
net: add sanity check in proto_register()

prot->memory_allocated should only be set if prot->sysctl_mem
is also set.

This is a followup of commit 25206111512d ("crypto: af_alg - get
rid of alg_memory_allocated").

Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20220216171801.3604366-1-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: ll_temac: Use GFP_KERNEL instead of GFP_ATOMIC when possible
Christophe JAILLET [Wed, 16 Feb 2022 20:16:16 +0000 (21:16 +0100)]
net: ll_temac: Use GFP_KERNEL instead of GFP_ATOMIC when possible

XTE_MAX_JUMBO_FRAME_SIZE is over 9000 bytes and the default value for
'rx_bd_num' is RX_BD_NUM_DEFAULT (i.e. 1024)

So this loop allocates more than 9 Mo of memory.

Previous memory allocations in this function already use GFP_KERNEL, so
use __netdev_alloc_skb_ip_align() and an explicit GFP_KERNEL instead of a
implicit GFP_ATOMIC.

This gives more opportunities of successful allocation.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/694abd65418b2b3974106a82d758e3474c65ae8f.1645042560.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: nixge: Use GFP_KERNEL instead of GFP_ATOMIC when possible
Christophe JAILLET [Wed, 16 Feb 2022 20:38:11 +0000 (21:38 +0100)]
net: nixge: Use GFP_KERNEL instead of GFP_ATOMIC when possible

NIXGE_MAX_JUMBO_FRAME_SIZE is over 9000 bytes and RX_BD_NUM 128.

So this loop allocates more than 1 Mo of memory.

Previous memory allocations in this function already use GFP_KERNEL, so
use __netdev_alloc_skb_ip_align() and an explicit GFP_KERNEL instead of a
implicit GFP_ATOMIC.

This gives more opportunities of successful allocation.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/28d2c8e05951ad02a57eb48333672947c8bb4f81.1645043881.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoMerge branch 'mptcp-selftest-fine-tuning-and-cleanup'
Jakub Kicinski [Fri, 18 Feb 2022 04:00:02 +0000 (20:00 -0800)]
Merge branch 'mptcp-selftest-fine-tuning-and-cleanup'

Mat Martineau says:

====================
mptcp: Selftest fine-tuning and cleanup

Patch 1 adjusts the mptcp selftest timeout to account for slow machines
running debug builds.

Patch 2 simplifies one test function.

Patches 3-6 do some cleanup, like deleting unused variables and avoiding
extra work when only printing usage information.

Patch 7 improves the checksum tests by utilizing existing checksum MIBs.
====================

Link: https://lore.kernel.org/r/20220218030311.367536-1-mathew.j.martineau@linux.intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoselftests: mptcp: add csum mib check for mptcp_connect
Geliang Tang [Fri, 18 Feb 2022 03:03:11 +0000 (19:03 -0800)]
selftests: mptcp: add csum mib check for mptcp_connect

This patch added the data checksum error mib counters check for the
script mptcp_connect.sh when the data checksum is enabled.

In do_transfer(), got the mib counters twice, before and after running
the mptcp_connect commands. The latter minus the former is the actual
number of the data checksum mib counter.

The output looks like this:

ns1 MPTCP -> ns2 (dead:beef:1::2:10007) MPTCP   (duration    86ms) [ OK ]
ns1 MPTCP -> ns2 (10.0.2.1:10008      ) MPTCP   (duration    66ms) [ FAIL ]
server got 1 data checksum error[s]

Fixes: 94d66ba1d8e48 ("selftests: mptcp: enable checksum in mptcp_connect.sh")
Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/255
Signed-off-by: Geliang Tang <geliang.tang@suse.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoselftests: mptcp: join: check for tools only if needed
Matthieu Baerts [Fri, 18 Feb 2022 03:03:10 +0000 (19:03 -0800)]
selftests: mptcp: join: check for tools only if needed

To allow showing the 'help' menu even if these tools are not available.

While at it, also avoid launching the command then checking $?. Instead,
the check is directly done in the 'if'.

Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoselftests: mptcp: join: create tmp files only if needed
Matthieu Baerts [Fri, 18 Feb 2022 03:03:09 +0000 (19:03 -0800)]
selftests: mptcp: join: create tmp files only if needed

These tmp files will only be created when a test will be launched.

This avoid 'dd' output when '-h' is used for example.

While at it, also avoid creating netns that will be removed when
starting the first test.

Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoselftests: mptcp: join: remove unused vars
Matthieu Baerts [Fri, 18 Feb 2022 03:03:08 +0000 (19:03 -0800)]
selftests: mptcp: join: remove unused vars

Shellcheck found that these variables were set but never used.

Note that rndh is no longer prefixed with '0-' but it doesn't change
anything.

Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoselftests: mptcp: join: exit after usage()
Matthieu Baerts [Fri, 18 Feb 2022 03:03:07 +0000 (19:03 -0800)]
selftests: mptcp: join: exit after usage()

With an error if it is an unknown option.

Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoselftests: mptcp: simplify pm_nl_change_endpoint
Geliang Tang [Fri, 18 Feb 2022 03:03:06 +0000 (19:03 -0800)]
selftests: mptcp: simplify pm_nl_change_endpoint

This patch simplified pm_nl_change_endpoint(), using id-based address
lookups only. And dropped the fragile way of parsing 'addr' and 'id'
from the output of pm_nl_show_endpoints().

Signed-off-by: Geliang Tang <geliang.tang@suse.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoselftests: mptcp: increase timeout to 20 minutes
Matthieu Baerts [Fri, 18 Feb 2022 03:03:05 +0000 (19:03 -0800)]
selftests: mptcp: increase timeout to 20 minutes

With the increase number of tests, one CI instance, using a debug kernel
config and not recent hardware, takes around 10 minutes to execute the
slowest MPTCP test: mptcp_join.sh.

Even if most CIs don't take that long to execute these tests --
typically max 10 minutes to run all selftests -- it will help some of
them if the timeout is increased.

The timeout could be disabled but it is always good to have an extra
safeguard, just in case.

Please note that on slow public CIs with kernel debug settings, it has
been observed it can easily take up to 45 minutes to execute all tests
in this very slow environment with other jobs running in parallel.
The slowest test, mptcp_join.sh takes ~30 minutes in this case.

In such environments, the selftests timeout set in the 'settings' file
is disabled because this environment is known as being exceptionnally
slow. It has been decided not to take such exceptional environments into
account and set the timeout to 20min.

Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoMerge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Jakub Kicinski [Fri, 18 Feb 2022 01:23:51 +0000 (17:23 -0800)]
Merge https://git./linux/kernel/git/bpf/bpf-next

Daniel Borkmann says:

====================
bpf-next 2022-02-17

We've added 29 non-merge commits during the last 8 day(s) which contain
a total of 34 files changed, 1502 insertions(+), 524 deletions(-).

The main changes are:

1) Add BTFGen support to bpftool which allows to use CO-RE in kernels without
   BTF info, from Mauricio Vásquez, Rafael David Tinoco, Lorenzo Fontana and
   Leonardo Di Donato. (Details: https://lpc.events/event/11/contributions/948/)

2) Prepare light skeleton to be used in both kernel module and user space
   and convert bpf_preload.ko to use light skeleton, from Alexei Starovoitov.

3) Rework bpftool's versioning scheme and align with libbpf's version number;
   also add linked libbpf version info to "bpftool version", from Quentin Monnet.

4) Add minimal C++ specific additions to bpftool's skeleton codegen to
   facilitate use of C skeletons in C++ applications, from Andrii Nakryiko.

5) Add BPF verifier sanity check whether relative offset on kfunc calls overflows
   desc->imm and reject the BPF program if the case, from Hou Tao.

6) Fix libbpf to use a dynamically allocated buffer for netlink messages to
   avoid receiving truncated messages on some archs, from Toke Høiland-Jørgensen.

7) Various follow-up fixes to the JIT bpf_prog_pack allocator, from Song Liu.

8) Various BPF selftest and vmtest.sh fixes, from Yucong Sun.

9) Fix bpftool pretty print handling on dumping map keys/values when no BTF
   is available, from Jiri Olsa and Yinjun Zhang.

10) Extend XDP frags selftest to check for invalid length, from Lorenzo Bianconi.

* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (29 commits)
  bpf: bpf_prog_pack: Set proper size before freeing ro_header
  selftests/bpf: Fix crash in core_reloc when bpftool btfgen fails
  selftests/bpf: Fix vmtest.sh to launch smp vm.
  libbpf: Fix memleak in libbpf_netlink_recv()
  bpftool: Fix C++ additions to skeleton
  bpftool: Fix pretty print dump for maps without BTF loaded
  selftests/bpf: Test "bpftool gen min_core_btf"
  bpftool: Gen min_core_btf explanation and examples
  bpftool: Implement btfgen_get_btf()
  bpftool: Implement "gen min_core_btf" logic
  bpftool: Add gen min_core_btf command
  libbpf: Expose bpf_core_{add,free}_cands() to bpftool
  libbpf: Split bpf_core_apply_relo()
  bpf: Reject kfunc calls that overflow insn->imm
  selftests/bpf: Add Skeleton templated wrapper as an example
  bpftool: Add C++-specific open/load/etc skeleton wrappers
  selftests/bpf: Fix GCC11 compiler warnings in -O2 mode
  bpftool: Fix the error when lookup in no-btf maps
  libbpf: Use dynamically allocated buffer when receiving netlink messages
  libbpf: Fix libbpf.map inheritance chain for LIBBPF_0.7.0
  ...
====================

Link: https://lore.kernel.org/r/20220217232027.29831-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agobpf: bpf_prog_pack: Set proper size before freeing ro_header
Song Liu [Thu, 17 Feb 2022 18:30:01 +0000 (10:30 -0800)]
bpf: bpf_prog_pack: Set proper size before freeing ro_header

bpf_prog_pack_free() uses header->size to decide whether the header
should be freed with module_memfree() or the bpf_prog_pack logic.
However, in kvmalloc() failure path of bpf_jit_binary_pack_alloc(),
header->size is not set yet. As a result, bpf_prog_pack_free() may treat
a slice of a pack as a standalone kvmalloc'd header and call
module_memfree() on the whole pack. This in turn causes use-after-free by
other users of the pack.

Fix this by setting ro_header->size before freeing ro_header.

Fixes: 33c9805860e5 ("bpf: Introduce bpf_jit_binary_pack_[alloc|finalize|free]")
Reported-by: syzbot+2f649ec6d2eea1495a8f@syzkaller.appspotmail.com
Reported-by: syzbot+ecb1e7e51c52f68f7481@syzkaller.appspotmail.com
Reported-by: syzbot+87f65c75f4a72db05445@syzkaller.appspotmail.com
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20220217183001.1876034-1-song@kernel.org
2 years agoMerge branch 'prestera-route-offloading'
David S. Miller [Thu, 17 Feb 2022 20:45:31 +0000 (20:45 +0000)]
Merge branch 'prestera-route-offloading'

Yevhen Orlov says:

====================
net: marvell: prestera: add basic routes offloading

Add support for blackhole and local routes for Marvell Prestera driver.
Subscribe on fib notifications and handle add/del.

Add features:
 - Support route adding.
   e.g.: "ip route add blackhole 7.7.1.1/24"
   e.g.: "ip route add local 9.9.9.9 dev sw1p30"
 - Support "rt_trap", "rt_offload", "rt_offload_failed" flags
 - Handle case, when route in "local" table overlaps route in "main" table
   example:
        ip ro add blackhole 7.7.7.7
        ip ro add local 7.7.7.7 dev sw1p30
        # blackhole route will be deoffloaded. rt_offload flag disappeared

Limitations:
 - Only "blackhole" and "local" routes supported. "nexthop" routes is TRAP
   for now and will be implemented soon.
 - Only "local" and "main" tables supported
====================

Co-developed-by: Taras Chornyi <tchornyi@marvell.com>
Signed-off-by: Taras Chornyi <tchornyi@marvell.com>
Co-developed-by: Oleksandr Mazur <oleksandr.mazur@plvision.eu>
Signed-off-by: Oleksandr Mazur <oleksandr.mazur@plvision.eu>
Signed-off-by: Yevhen Orlov <yevhen.orlov@plvision.eu>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: marvell: prestera: handle fib notifications
Yevhen Orlov [Wed, 16 Feb 2022 01:05:57 +0000 (03:05 +0200)]
net: marvell: prestera: handle fib notifications

For now we support only TRAP or DROP, so we can offload only "local" or
"blackhole" routes.
Nexthop routes is TRAP for now. Will be implemented soon.

Co-developed-by: Taras Chornyi <tchornyi@marvell.com>
Signed-off-by: Taras Chornyi <tchornyi@marvell.com>
Co-developed-by: Oleksandr Mazur <oleksandr.mazur@plvision.eu>
Signed-off-by: Oleksandr Mazur <oleksandr.mazur@plvision.eu>
Signed-off-by: Yevhen Orlov <yevhen.orlov@plvision.eu>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: marvell: prestera: add hardware router objects accounting for lpm
Yevhen Orlov [Wed, 16 Feb 2022 01:05:56 +0000 (03:05 +0200)]
net: marvell: prestera: add hardware router objects accounting for lpm

Add new router_hw object "fib_node". For now it support only DROP and
TRAP mode.

Co-developed-by: Taras Chornyi <tchornyi@marvell.com>
Signed-off-by: Taras Chornyi <tchornyi@marvell.com>
Co-developed-by: Oleksandr Mazur <oleksandr.mazur@plvision.eu>
Signed-off-by: Oleksandr Mazur <oleksandr.mazur@plvision.eu>
Signed-off-by: Yevhen Orlov <yevhen.orlov@plvision.eu>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: marvell: prestera: Add router LPM ABI
Yevhen Orlov [Wed, 16 Feb 2022 01:05:55 +0000 (03:05 +0200)]
net: marvell: prestera: Add router LPM ABI

Add functions to create/delete lpm entry in hw.
prestera_hw_lpm_add() take index of allocated virtual router.
Also it takes grp_id, which is index of allocated nexthop group.
ABI to create nexthop group will be added soon.

Co-developed-by: Taras Chornyi <tchornyi@marvell.com>
Signed-off-by: Taras Chornyi <tchornyi@marvell.com>
Co-developed-by: Oleksandr Mazur <oleksandr.mazur@plvision.eu>
Signed-off-by: Oleksandr Mazur <oleksandr.mazur@plvision.eu>
Signed-off-by: Yevhen Orlov <yevhen.orlov@plvision.eu>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Jakub Kicinski [Thu, 17 Feb 2022 20:22:28 +0000 (12:22 -0800)]
Merge git://git./linux/kernel/git/netdev/net

Fast path bpf marge for some -next work.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoMerge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Jakub Kicinski [Thu, 17 Feb 2022 20:01:54 +0000 (12:01 -0800)]
Merge https://git./linux/kernel/git/bpf/bpf

Alexei Starovoitov says:

====================
pull-request: bpf 2022-02-17

We've added 8 non-merge commits during the last 7 day(s) which contain
a total of 8 files changed, 119 insertions(+), 15 deletions(-).

The main changes are:

1) Add schedule points in map batch ops, from Eric.

2) Fix bpf_msg_push_data with len 0, from Felix.

3) Fix crash due to incorrect copy_map_value, from Kumar.

4) Fix crash due to out of bounds access into reg2btf_ids, from Kumar.

5) Fix a bpf_timer initialization issue with clang, from Yonghong.

* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
  bpf: Add schedule points in batch ops
  bpf: Fix crash due to out of bounds access into reg2btf_ids.
  selftests: bpf: Check bpf_msg_push_data return value
  bpf: Fix a bpf_timer initialization issue
  bpf: Emit bpf_timer in vmlinux BTF
  selftests/bpf: Add test for bpf_timer overwriting crash
  bpf: Fix crash due to incorrect copy_map_value
  bpf: Do not try bpf_msg_push_data with len 0
====================

Link: https://lore.kernel.org/r/20220217190000.37925-1-alexei.starovoitov@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Jakub Kicinski [Thu, 17 Feb 2022 19:44:20 +0000 (11:44 -0800)]
Merge git://git./linux/kernel/git/netdev/net

No conflicts.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoMerge tag 'net-5.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Linus Torvalds [Thu, 17 Feb 2022 19:33:59 +0000 (11:33 -0800)]
Merge tag 'net-5.17-rc5' of git://git./linux/kernel/git/netdev/net

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

  Current release - regressions:

   - dsa: lantiq_gswip: fix use after free in gswip_remove()

   - smc: avoid overwriting the copies of clcsock callback functions

  Current release - new code bugs:

   - iwlwifi:
      - fix use-after-free when no FW is present
      - mei: fix the pskb_may_pull check in ipv4
      - mei: retry mapping the shared area
      - mvm: don't feed the hardware RFKILL into iwlmei

  Previous releases - regressions:

   - ipv6: mcast: use rcu-safe version of ipv6_get_lladdr()

   - tipc: fix wrong publisher node address in link publications

   - iwlwifi: mvm: don't send SAR GEO command for 3160 devices, avoid FW
     assertion

   - bgmac: make idm and nicpm resource optional again

   - atl1c: fix tx timeout after link flap

  Previous releases - always broken:

   - vsock: remove vsock from connected table when connect is
     interrupted by a signal

   - ping: change destination interface checks to match raw sockets

   - crypto: af_alg - get rid of alg_memory_allocated to avoid confusing
     semantics (and null-deref) after SO_RESERVE_MEM was added

   - ipv6: make exclusive flowlabel checks per-netns

   - bonding: force carrier update when releasing slave

   - sched: limit TC_ACT_REPEAT loops

   - bridge: multicast: notify switchdev driver whenever MC processing
     gets disabled because of max entries reached

   - wifi: brcmfmac: fix crash in brcm_alt_fw_path when WLAN not found

   - iwlwifi: fix locking when "HW not ready"

   - phy: mediatek: remove PHY mode check on MT7531

   - dsa: mv88e6xxx: flush switchdev FDB workqueue before removing VLAN

   - dsa: lan9303:
      - fix polarity of reset during probe
      - fix accelerated VLAN handling"

* tag 'net-5.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (65 commits)
  bonding: force carrier update when releasing slave
  nfp: flower: netdev offload check for ip6gretap
  ipv6: fix data-race in fib6_info_hw_flags_set / fib6_purge_rt
  ipv4: fix data races in fib_alias_hw_flags_set
  net: dsa: lan9303: add VLAN IDs to master device
  net: dsa: lan9303: handle hwaccel VLAN tags
  vsock: remove vsock from connected table when connect is interrupted by a signal
  Revert "net: ethernet: bgmac: Use devm_platform_ioremap_resource_byname"
  ping: fix the dif and sdif check in ping_lookup
  net: usb: cdc_mbim: avoid altsetting toggling for Telit FN990
  net: sched: limit TC_ACT_REPEAT loops
  tipc: fix wrong notification node addresses
  net: dsa: lantiq_gswip: fix use after free in gswip_remove()
  ipv6: per-netns exclusive flowlabel checks
  net: bridge: multicast: notify switchdev driver whenever MC processing gets disabled
  CDC-NCM: avoid overflow in sanity checking
  mctp: fix use after free
  net: mscc: ocelot: fix use-after-free in ocelot_vlan_del()
  bonding: fix data-races around agg_select_timer
  dpaa2-eth: Initialize mutex used in one step timestamping path
  ...

2 years agoselftests/bpf: Fix crash in core_reloc when bpftool btfgen fails
Yucong Sun [Thu, 17 Feb 2022 18:02:10 +0000 (10:02 -0800)]
selftests/bpf: Fix crash in core_reloc when bpftool btfgen fails

Avoid unnecessary goto cleanup, as there is nothing to clean up.

Signed-off-by: Yucong Sun <fallentree@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220217180210.2981502-1-fallentree@fb.com
2 years agoselftests/bpf: Fix vmtest.sh to launch smp vm.
Yucong Sun [Thu, 17 Feb 2022 15:52:12 +0000 (07:52 -0800)]
selftests/bpf: Fix vmtest.sh to launch smp vm.

Fix typo in vmtest.sh to make sure it launch proper vm with 8 cpus.

Signed-off-by: Yucong Sun <fallentree@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220217155212.2309672-1-fallentree@fb.com
2 years agobonding: force carrier update when releasing slave
Zhang Changzhong [Wed, 16 Feb 2022 14:18:08 +0000 (22:18 +0800)]
bonding: force carrier update when releasing slave

In __bond_release_one(), bond_set_carrier() is only called when bond
device has no slave. Therefore, if we remove the up slave from a master
with two slaves and keep the down slave, the master will remain up.

Fix this by moving bond_set_carrier() out of if (!bond_has_slaves(bond))
statement.

Reproducer:
$ insmod bonding.ko mode=0 miimon=100 max_bonds=2
$ ifconfig bond0 up
$ ifenslave bond0 eth0 eth1
$ ifconfig eth0 down
$ ifenslave -d bond0 eth1
$ cat /proc/net/bonding/bond0

Fixes: ff59c4563a8d ("[PATCH] bonding: support carrier state for master")
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Acked-by: Jay Vosburgh <jay.vosburgh@canonical.com>
Link: https://lore.kernel.org/r/1645021088-38370-1-git-send-email-zhangchangzhong@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agobpf: Add schedule points in batch ops
Eric Dumazet [Thu, 17 Feb 2022 18:19:02 +0000 (10:19 -0800)]
bpf: Add schedule points in batch ops

syzbot reported various soft lockups caused by bpf batch operations.

 INFO: task kworker/1:1:27 blocked for more than 140 seconds.
 INFO: task hung in rcu_barrier

Nothing prevents batch ops to process huge amount of data,
we need to add schedule points in them.

Note that maybe_wait_bpf_programs(map) calls from
generic_map_delete_batch() can be factorized by moving
the call after the loop.

This will be done later in -next tree once we get this fix merged,
unless there is strong opinion doing this optimization sooner.

Fixes: aa2e93b8e58e ("bpf: Add generic support for update and delete batch ops")
Fixes: cb4d03ab499d ("bpf: Add generic support for lookup batch op")
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: Stanislav Fomichev <sdf@google.com>
Acked-by: Brian Vazquez <brianvv@google.com>
Link: https://lore.kernel.org/bpf/20220217181902.808742-1-eric.dumazet@gmail.com
2 years agofs/file_table: fix adding missing kmemleak_not_leak()
Luis Chamberlain [Tue, 15 Feb 2022 02:08:28 +0000 (18:08 -0800)]
fs/file_table: fix adding missing kmemleak_not_leak()

Commit b42bc9a3c511 ("Fix regression due to "fs: move binfmt_misc sysctl
to its own file") fixed a regression, however it failed to add a
kmemleak_not_leak().

Fixes: b42bc9a3c511 ("Fix regression due to "fs: move binfmt_misc sysctl to its own file")
Reported-by: Tong Zhang <ztong0001@gmail.com>
Cc: Tong Zhang <ztong0001@gmail.com>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agoMerge tag 'perf-tools-fixes-for-v5.17-2022-02-17' of git://git.kernel.org/pub/scm...
Linus Torvalds [Thu, 17 Feb 2022 18:06:09 +0000 (10:06 -0800)]
Merge tag 'perf-tools-fixes-for-v5.17-2022-02-17' of git://git./linux/kernel/git/acme/linux

Pull perf tools fixes from Arnaldo Carvalho de Melo:

 - Fix corrupt inject files when only last branch option is enabled with
   ARM CoreSight ETM

 - Fix use-after-free for realloc(..., 0) in libsubcmd, found by gcc 12

 - Defer freeing string after possible strlen() on it in the BPF loader,
   found by gcc 12

 - Avoid early exit in 'perf trace' due SIGCHLD from non-workload
   processes

 - Fix arm64 perf_event_attr 'perf test's wrt --call-graph
   initialization

 - Fix libperf 32-bit build for 'perf test' wrt uint64_t printf

 - Fix perf_cpu_map__for_each_cpu macro in libperf, providing access to
   the CPU iterator

 - Sync linux/perf_event.h UAPI with the kernel sources

 - Update Jiri Olsa's email address in MAINTAINERS

* tag 'perf-tools-fixes-for-v5.17-2022-02-17' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
  perf bpf: Defer freeing string after possible strlen() on it
  perf test: Fix arm64 perf_event_attr tests wrt --call-graph initialization
  libsubcmd: Fix use-after-free for realloc(..., 0)
  libperf: Fix perf_cpu_map__for_each_cpu macro
  perf cs-etm: Fix corrupt inject files when only last branch option is enabled
  perf cs-etm: No-op refactor of synth opt usage
  libperf: Fix 32-bit build for tests uint64_t printf
  tools headers UAPI: Sync linux/perf_event.h with the kernel sources
  perf trace: Avoid early exit due SIGCHLD from non-workload processes
  MAINTAINERS: Update Jiri's email address

2 years agoMerge tag 'modules-5.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof...
Linus Torvalds [Thu, 17 Feb 2022 17:54:00 +0000 (09:54 -0800)]
Merge tag 'modules-5.17-rc5' of git://git./linux/kernel/git/mcgrof/linux

Pull module fix from Luis Chamberlain:
 "Fixes module decompression when CONFIG_SYSFS=n

  The only fix trickled down for v5.17-rc cycle so far is the fix for
  module decompression when CONFIG_SYSFS=n. This was reported through
  0-day"

* tag 'modules-5.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux:
  module: fix building with sysfs disabled

2 years agonfp: flower: netdev offload check for ip6gretap
Danie du Toit [Thu, 17 Feb 2022 12:48:20 +0000 (14:48 +0200)]
nfp: flower: netdev offload check for ip6gretap

IPv6 GRE tunnels are not being offloaded, this is caused by a missing
netdev offload check. The functionality of IPv6 GRE tunnel offloading
was previously added but this check was not included. Adding the
ip6gretap check allows IPv6 GRE tunnels to be offloaded correctly.

Fixes: f7536ffb0986 ("nfp: flower: Allow ipv6gretap interface for offloading")
Signed-off-by: Danie du Toit <danie.dutoit@corigine.com>
Signed-off-by: Louis Peens <louis.peens@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20220217124820.40436-1-louis.peens@corigine.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoipv6: fix data-race in fib6_info_hw_flags_set / fib6_purge_rt
Eric Dumazet [Wed, 16 Feb 2022 17:32:17 +0000 (09:32 -0800)]
ipv6: fix data-race in fib6_info_hw_flags_set / fib6_purge_rt

Because fib6_info_hw_flags_set() is called without any synchronization,
all accesses to gi6->offload, fi->trap and fi->offload_failed
need some basic protection like READ_ONCE()/WRITE_ONCE().

BUG: KCSAN: data-race in fib6_info_hw_flags_set / fib6_purge_rt

read to 0xffff8881087d5886 of 1 bytes by task 13953 on cpu 0:
 fib6_drop_pcpu_from net/ipv6/ip6_fib.c:1007 [inline]
 fib6_purge_rt+0x4f/0x580 net/ipv6/ip6_fib.c:1033
 fib6_del_route net/ipv6/ip6_fib.c:1983 [inline]
 fib6_del+0x696/0x890 net/ipv6/ip6_fib.c:2028
 __ip6_del_rt net/ipv6/route.c:3876 [inline]
 ip6_del_rt+0x83/0x140 net/ipv6/route.c:3891
 __ipv6_dev_ac_dec+0x2b5/0x370 net/ipv6/anycast.c:374
 ipv6_dev_ac_dec net/ipv6/anycast.c:387 [inline]
 __ipv6_sock_ac_close+0x141/0x200 net/ipv6/anycast.c:207
 ipv6_sock_ac_close+0x79/0x90 net/ipv6/anycast.c:220
 inet6_release+0x32/0x50 net/ipv6/af_inet6.c:476
 __sock_release net/socket.c:650 [inline]
 sock_close+0x6c/0x150 net/socket.c:1318
 __fput+0x295/0x520 fs/file_table.c:280
 ____fput+0x11/0x20 fs/file_table.c:313
 task_work_run+0x8e/0x110 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:175 [inline]
 exit_to_user_mode_prepare+0x160/0x190 kernel/entry/common.c:207
 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
 syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:300
 do_syscall_64+0x50/0xd0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae

write to 0xffff8881087d5886 of 1 bytes by task 1912 on cpu 1:
 fib6_info_hw_flags_set+0x155/0x3b0 net/ipv6/route.c:6230
 nsim_fib6_rt_hw_flags_set drivers/net/netdevsim/fib.c:668 [inline]
 nsim_fib6_rt_add drivers/net/netdevsim/fib.c:691 [inline]
 nsim_fib6_rt_insert drivers/net/netdevsim/fib.c:756 [inline]
 nsim_fib6_event drivers/net/netdevsim/fib.c:853 [inline]
 nsim_fib_event drivers/net/netdevsim/fib.c:886 [inline]
 nsim_fib_event_work+0x284f/0x2cf0 drivers/net/netdevsim/fib.c:1477
 process_one_work+0x3f6/0x960 kernel/workqueue.c:2307
 worker_thread+0x616/0xa70 kernel/workqueue.c:2454
 kthread+0x2c7/0x2e0 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30

value changed: 0x22 -> 0x2a

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 1912 Comm: kworker/1:3 Not tainted 5.16.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events nsim_fib_event_work

Fixes: 0c5fcf9e249e ("IPv6: Add "offload failed" indication to routes")
Fixes: bb3c4ab93e44 ("ipv6: Add "offload" and "trap" indications to routes")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Amit Cohen <amcohen@nvidia.com>
Cc: Ido Schimmel <idosch@nvidia.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Link: https://lore.kernel.org/r/20220216173217.3792411-2-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoipv4: fix data races in fib_alias_hw_flags_set
Eric Dumazet [Wed, 16 Feb 2022 17:32:16 +0000 (09:32 -0800)]
ipv4: fix data races in fib_alias_hw_flags_set

fib_alias_hw_flags_set() can be used by concurrent threads,
and is only RCU protected.

We need to annotate accesses to following fields of struct fib_alias:

    offload, trap, offload_failed

Because of READ_ONCE()WRITE_ONCE() limitations, make these
field u8.

BUG: KCSAN: data-race in fib_alias_hw_flags_set / fib_alias_hw_flags_set

read to 0xffff888134224a6a of 1 bytes by task 2013 on cpu 1:
 fib_alias_hw_flags_set+0x28a/0x470 net/ipv4/fib_trie.c:1050
 nsim_fib4_rt_hw_flags_set drivers/net/netdevsim/fib.c:350 [inline]
 nsim_fib4_rt_add drivers/net/netdevsim/fib.c:367 [inline]
 nsim_fib4_rt_insert drivers/net/netdevsim/fib.c:429 [inline]
 nsim_fib4_event drivers/net/netdevsim/fib.c:461 [inline]
 nsim_fib_event drivers/net/netdevsim/fib.c:881 [inline]
 nsim_fib_event_work+0x1852/0x2cf0 drivers/net/netdevsim/fib.c:1477
 process_one_work+0x3f6/0x960 kernel/workqueue.c:2307
 process_scheduled_works kernel/workqueue.c:2370 [inline]
 worker_thread+0x7df/0xa70 kernel/workqueue.c:2456
 kthread+0x1bf/0x1e0 kernel/kthread.c:377
 ret_from_fork+0x1f/0x30

write to 0xffff888134224a6a of 1 bytes by task 4872 on cpu 0:
 fib_alias_hw_flags_set+0x2d5/0x470 net/ipv4/fib_trie.c:1054
 nsim_fib4_rt_hw_flags_set drivers/net/netdevsim/fib.c:350 [inline]
 nsim_fib4_rt_add drivers/net/netdevsim/fib.c:367 [inline]
 nsim_fib4_rt_insert drivers/net/netdevsim/fib.c:429 [inline]
 nsim_fib4_event drivers/net/netdevsim/fib.c:461 [inline]
 nsim_fib_event drivers/net/netdevsim/fib.c:881 [inline]
 nsim_fib_event_work+0x1852/0x2cf0 drivers/net/netdevsim/fib.c:1477
 process_one_work+0x3f6/0x960 kernel/workqueue.c:2307
 process_scheduled_works kernel/workqueue.c:2370 [inline]
 worker_thread+0x7df/0xa70 kernel/workqueue.c:2456
 kthread+0x1bf/0x1e0 kernel/kthread.c:377
 ret_from_fork+0x1f/0x30

value changed: 0x00 -> 0x02

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 4872 Comm: kworker/0:0 Not tainted 5.17.0-rc3-syzkaller-00188-g1d41d2e82623-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events nsim_fib_event_work

Fixes: 90b93f1b31f8 ("ipv4: Add "offload" and "trap" indications to routes")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://lore.kernel.org/r/20220216173217.3792411-1-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: dsa: lan9303: add VLAN IDs to master device
Mans Rullgard [Wed, 16 Feb 2022 20:48:18 +0000 (20:48 +0000)]
net: dsa: lan9303: add VLAN IDs to master device

If the master device does VLAN filtering, the IDs used by the switch
must be added for any frames to be received.  Do this in the
port_enable() function, and remove them in port_disable().

Fixes: a1292595e006 ("net: dsa: add new DSA switch driver for the SMSC-LAN9303")
Signed-off-by: Mans Rullgard <mans@mansr.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20220216204818.28746-1-mans@mansr.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: dsa: lan9303: handle hwaccel VLAN tags
Mans Rullgard [Wed, 16 Feb 2022 12:46:34 +0000 (12:46 +0000)]
net: dsa: lan9303: handle hwaccel VLAN tags

Check for a hwaccel VLAN tag on rx and use it if present.  Otherwise,
use __skb_vlan_pop() like the other tag parsers do.  This fixes the case
where the VLAN tag has already been consumed by the master.

Fixes: a1292595e006 ("net: dsa: add new DSA switch driver for the SMSC-LAN9303")
Signed-off-by: Mans Rullgard <mans@mansr.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20220216124634.23123-1-mans@mansr.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agomm: don't try to NUMA-migrate COW pages that have other uses
Linus Torvalds [Thu, 17 Feb 2022 16:57:47 +0000 (08:57 -0800)]
mm: don't try to NUMA-migrate COW pages that have other uses

Oded Gabbay reports that enabling NUMA balancing causes corruption with
his Gaudi accelerator test load:

 "All the details are in the bug, but the bottom line is that somehow,
  this patch causes corruption when the numa balancing feature is
  enabled AND we don't use process affinity AND we use GUP to pin pages
  so our accelerator can DMA to/from system memory.

  Either disabling numa balancing, using process affinity to bind to
  specific numa-node or reverting this patch causes the bug to
  disappear"

and Oded bisected the issue to commit 09854ba94c6a ("mm: do_wp_page()
simplification").

Now, the NUMA balancing shouldn't actually be changing the writability
of a page, and as such shouldn't matter for COW.  But it appears it
does.  Suspicious.

However, regardless of that, the condition for enabling NUMA faults in
change_pte_range() is nonsensical.  It uses "page_mapcount(page)" to
decide if a COW page should be NUMA-protected or not, and that makes
absolutely no sense.

The number of mappings a page has is irrelevant: not only does GUP get a
reference to a page as in Oded's case, but the other mappings migth be
paged out and the only reference to them would be in the page count.

Since we should never try to NUMA-balance a page that we can't move
anyway due to other references, just fix the code to use 'page_count()'.
Oded confirms that that fixes his issue.

Now, this does imply that something in NUMA balancing ends up changing
page protections (other than the obvious one of making the page
inaccessible to get the NUMA faulting information).  Otherwise the COW
simplification wouldn't matter - since doing the GUP on the page would
make sure it's writable.

The cause of that permission change would be good to figure out too,
since it clearly results in spurious COW events - but fixing the
nonsensical test that just happened to work before is obviously the
CorrectThing(tm) to do regardless.

Fixes: 09854ba94c6a ("mm: do_wp_page() simplification")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=215616
Link: https://lore.kernel.org/all/CAFCwf10eNmwq2wD71xjUhqkvv5+_pJMR1nPug2RqNDcFT4H86Q@mail.gmail.com/
Reported-and-tested-by: Oded Gabbay <oded.gabbay@gmail.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Peter Xu <peterx@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agovsock: remove vsock from connected table when connect is interrupted by a signal
Seth Forshee [Thu, 17 Feb 2022 14:13:12 +0000 (08:13 -0600)]
vsock: remove vsock from connected table when connect is interrupted by a signal

vsock_connect() expects that the socket could already be in the
TCP_ESTABLISHED state when the connecting task wakes up with a signal
pending. If this happens the socket will be in the connected table, and
it is not removed when the socket state is reset. In this situation it's
common for the process to retry connect(), and if the connection is
successful the socket will be added to the connected table a second
time, corrupting the list.

Prevent this by calling vsock_remove_connected() if a signal is received
while waiting for a connection. This is harmless if the socket is not in
the connected table, and if it is in the table then removing it will
prevent list corruption from a double add.

Note for backporting: this patch requires d5afa82c977e ("vsock: correct
removal of socket from the list"), which is in all current stable trees
except 4.9.y.

Fixes: d021c344051a ("VSOCK: Introduce VM Sockets")
Signed-off-by: Seth Forshee <sforshee@digitalocean.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://lore.kernel.org/r/20220217141312.2297547-1-sforshee@digitalocean.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoRevert "net: ethernet: bgmac: Use devm_platform_ioremap_resource_byname"
Jonas Gorski [Wed, 16 Feb 2022 18:46:34 +0000 (10:46 -0800)]
Revert "net: ethernet: bgmac: Use devm_platform_ioremap_resource_byname"

This reverts commit 3710e80952cf2dc48257ac9f145b117b5f74e0a5.

Since idm_base and nicpm_base are still optional resources not present
on all platforms, this breaks the driver for everything except Northstar
2 (which has both).

The same change was already reverted once with 755f5738ff98 ("net:
broadcom: fix a mistake about ioremap resource").

So let's do it again.

Fixes: 3710e80952cf ("net: ethernet: bgmac: Use devm_platform_ioremap_resource_byname")
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
[florian: Added comments to explain the resources are optional]
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20220216184634.2032460-1-f.fainelli@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoipv6/addrconf: ensure addrconf_verify_rtnl() has completed
Eric Dumazet [Wed, 16 Feb 2022 18:20:37 +0000 (10:20 -0800)]
ipv6/addrconf: ensure addrconf_verify_rtnl() has completed

Before freeing the hash table in addrconf_exit_net(),
we need to make sure the work queue has completed,
or risk NULL dereference or UAF.

Thus, use cancel_delayed_work_sync() to enforce this.
We do not hold RTNL in addrconf_exit_net(), making this safe.

Fixes: 8805d13ff1b2 ("ipv6/addrconf: use one delayed work per netns")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20220216182037.3742-1-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: allow out-of-order netdev unregistration
Jakub Kicinski [Tue, 15 Feb 2022 22:53:10 +0000 (14:53 -0800)]
net: allow out-of-order netdev unregistration

Sprinkle for each loops to allow netdevices to be unregistered
out of order, as their refs are released.

This prevents problems caused by dependencies between netdevs
which want to release references in their ->priv_destructor.
See commit d6ff94afd90b ("vlan: move dev_put into vlan_dev_uninit")
for example.

Eric has removed the only known ordering requirement in
commit c002496babfd ("Merge branch 'ipv6-loopback'")
so let's try this and see if anything explodes...

Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Xin Long <lucien.xin@gmail.com>
Link: https://lore.kernel.org/r/20220215225310.3679266-2-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: transition netdev reg state earlier in run_todo
Jakub Kicinski [Tue, 15 Feb 2022 22:53:09 +0000 (14:53 -0800)]
net: transition netdev reg state earlier in run_todo

In prep for unregistering netdevs out of order move the netdev
state validation and change outside of the loop.

While at it modernize this code and use WARN() instead of
pr_err() + dump_stack().

Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Xin Long <lucien.xin@gmail.com>
Link: https://lore.kernel.org/r/20220215225310.3679266-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agolibbpf: Fix memleak in libbpf_netlink_recv()
Andrii Nakryiko [Thu, 17 Feb 2022 07:39:58 +0000 (23:39 -0800)]
libbpf: Fix memleak in libbpf_netlink_recv()

Ensure that libbpf_netlink_recv() frees dynamically allocated buffer in
all code paths.

Fixes: 9c3de619e13e ("libbpf: Use dynamically allocated buffer when receiving netlink messages")
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/bpf/20220217073958.276959-1-andrii@kernel.org
2 years agoping: fix the dif and sdif check in ping_lookup
Xin Long [Wed, 16 Feb 2022 05:20:52 +0000 (00:20 -0500)]
ping: fix the dif and sdif check in ping_lookup

When 'ping' changes to use PING socket instead of RAW socket by:

   # sysctl -w net.ipv4.ping_group_range="0 100"

There is another regression caused when matching sk_bound_dev_if
and dif, RAW socket is using inet_iif() while PING socket lookup
is using skb->dev->ifindex, the cmd below fails due to this:

  # ip link add dummy0 type dummy
  # ip link set dummy0 up
  # ip addr add 192.168.111.1/24 dev dummy0
  # ping -I dummy0 192.168.111.1 -c1

The issue was also reported on:

  https://github.com/iputils/iputils/issues/104

But fixed in iputils in a wrong way by not binding to device when
destination IP is on device, and it will cause some of kselftests
to fail, as Jianlin noticed.

This patch is to use inet(6)_iif and inet(6)_sdif to get dif and
sdif for PING socket, and keep consistent with RAW socket.

Fixes: c319b4d76b9e ("net: ipv4: add IPPROTO_ICMP socket kind")
Reported-by: Jianlin Shi <jishi@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: usb: cdc_mbim: avoid altsetting toggling for Telit FN990
Daniele Palmas [Tue, 15 Feb 2022 11:13:35 +0000 (12:13 +0100)]
net: usb: cdc_mbim: avoid altsetting toggling for Telit FN990

Add quirk CDC_MBIM_FLAG_AVOID_ALTSETTING_TOGGLE for Telit FN990
0x1071 composition in order to avoid bind error.

Signed-off-by: Daniele Palmas <dnlplm@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoMerge branch 'ping6-SOL_IPV6'
David S. Miller [Thu, 17 Feb 2022 14:22:10 +0000 (14:22 +0000)]
Merge branch 'ping6-SOL_IPV6'

Jakub Kicinski says:

====================
net: ping6: support setting basic SOL_IPV6 options via cmsg

Support for IPV6_HOPLIMIT, IPV6_TCLASS, IPV6_DONTFRAG on ICMPv6
sockets and associated tests. I have no immediate plans to
implement IPV6_FLOWINFO and all the extension header stuff.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoselftests: net: basic test for IPV6_2292*
Jakub Kicinski [Thu, 17 Feb 2022 01:21:20 +0000 (17:21 -0800)]
selftests: net: basic test for IPV6_2292*

Add a basic test to make sure ping sockets don't crash
with IPV6_2292* options.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoselftests: net: test IPV6_HOPLIMIT
Jakub Kicinski [Thu, 17 Feb 2022 01:21:19 +0000 (17:21 -0800)]
selftests: net: test IPV6_HOPLIMIT

Test setting IPV6_HOPLIMIT via setsockopt and cmsg
across socket types.

Output without the kernel support (this series):

  Case HOPLIMIT ICMP cmsg - packet data returned 1, expected 0
  Case HOPLIMIT ICMP diff - packet data returned 1, expected 0

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoselftests: net: test IPV6_TCLASS
Jakub Kicinski [Thu, 17 Feb 2022 01:21:18 +0000 (17:21 -0800)]
selftests: net: test IPV6_TCLASS

Test setting IPV6_TCLASS via setsockopt and cmsg
across socket types.

Output without the kernel support (this series):

  Case TCLASS ICMP cmsg - packet data returned 1, expected 0
  Case TCLASS ICMP cmsg - rejection returned 0, expected 1
  Case TCLASS ICMP diff - pass returned 1, expected 0
  Case TCLASS ICMP diff - packet data returned 1, expected 0
  Case TCLASS ICMP diff - rejection returned 0, expected 1

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoselftests: net: test IPV6_DONTFRAG
Jakub Kicinski [Thu, 17 Feb 2022 01:21:17 +0000 (17:21 -0800)]
selftests: net: test IPV6_DONTFRAG

Test setting IPV6_DONTFRAG via setsockopt and cmsg
across socket types.

Output without the kernel support (this series):

    Case DONTFRAG ICMP setsock returned 0, expected 1
    Case DONTFRAG ICMP cmsg returned 0, expected 1
    Case DONTFRAG ICMP both returned 0, expected 1
    Case DONTFRAG ICMP diff returned 0, expected 1
  FAIL - 4/24 cases failed

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: ping6: support setting basic SOL_IPV6 options via cmsg
Jakub Kicinski [Thu, 17 Feb 2022 01:21:16 +0000 (17:21 -0800)]
net: ping6: support setting basic SOL_IPV6 options via cmsg

Support setting IPV6_HOPLIMIT, IPV6_TCLASS, IPV6_DONTFRAG
during sendmsg via SOL_IPV6 cmsgs.

tclass and dontfrag are init'ed from struct ipv6_pinfo in
ipcm6_init_sk(), while hlimit is inited to -1, so we need
to handle it being populated via cmsg explicitly.

Leave extension headers and flowlabel unimplemented.
Those are slightly more laborious to test and users
seem to primarily care about IPV6_TCLASS.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoMerge branch 'switchdev-BRENTRY'
David S. Miller [Thu, 17 Feb 2022 14:17:10 +0000 (14:17 +0000)]
Merge branch 'switchdev-BRENTRY'

Vladimir Oltean says:

====================
kRemove BRENTRY checks from switchdev drivers

As discussed here:
https://patchwork.kernel.org/project/netdevbpf/patch/20220214233111.1586715-2-vladimir.oltean@nxp.com/#24738869

no switchdev driver makes use of VLAN port objects that lack the
BRIDGE_VLAN_INFO_BRENTRY flag. Notifying them in the first place rather
seems like an omission of commit 9c86ce2c1ae3 ("net: bridge: Notify
about bridge VLANs").

Since commit 3116ad0696dd ("net: bridge: vlan: don't notify to switchdev
master VLANs without BRENTRY flag") that was just merged, the bridge no
longer notifies switchdev upon creation of these VLANs, so we can remove
the checks from drivers.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: ti: cpsw: remove guards against !BRIDGE_VLAN_INFO_BRENTRY
Vladimir Oltean [Wed, 16 Feb 2022 16:47:52 +0000 (18:47 +0200)]
net: ti: cpsw: remove guards against !BRIDGE_VLAN_INFO_BRENTRY

Since commit 3116ad0696dd ("net: bridge: vlan: don't notify to switchdev
master VLANs without BRENTRY flag"), the bridge no longer emits
switchdev notifiers for VLANs that don't have the
BRIDGE_VLAN_INFO_BRENTRY flag, so these checks are dead code.
Remove them.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>