Most likely the last -next pull request for v6.13. Most changes are in
Realtek and Qualcomm drivers, otherwise not really anything
noteworthy.
Major changes:
mac80211
* EHT 1024 aggregation size for transmissions
ath12k
* switch to using wiphy_lock() and remove ar->conf_mutex
* firmware coredump collection support
* add debugfs support for a multitude of statistics
ath11k
* dt: document WCN6855 hardware inputs
ath9k
* remove include/linux/ath9k_platform.h
ath5k
* Arcadyan ARV45XX AR2417 & Gigaset SX76[23] AR241[34]A support
rtw88:
* 8821au and 8812au USB adapters support
rtw89
* thermal protection
* firmware secure boot for WiFi 6 chip
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Merge tag 'wireless-next-2024-11-13' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next
Kalle Valo says:
====================
wireless-next patches for v6.13
Most likely the last -next pull request for v6.13. Most changes are in
Realtek and Qualcomm drivers, otherwise not really anything
noteworthy.
Major changes:
mac80211
* EHT 1024 aggregation size for transmissions
ath12k
* switch to using wiphy_lock() and remove ar->conf_mutex
* firmware coredump collection support
* add debugfs support for a multitude of statistics
ath11k
* dt: document WCN6855 hardware inputs
ath9k
* remove include/linux/ath9k_platform.h
ath5k
* Arcadyan ARV45XX AR2417 & Gigaset SX76[23] AR241[34]A support
rtw88:
* 8821au and 8812au USB adapters support
rtw89
* thermal protection
* firmware secure boot for WiFi 6 chip
* tag 'wireless-next-2024-11-13' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (154 commits)
Revert "wifi: iwlegacy: do not skip frames with bad FCS"
wifi: mac80211: pass MBSSID config by reference
wifi: mac80211: Support EHT 1024 aggregation size in TX
net: rfkill: gpio: Add check for clk_enable()
wifi: brcmfmac: Fix oops due to NULL pointer dereference in brcmf_sdiod_sglist_rw()
wifi: Switch back to struct platform_driver::remove()
wifi: ipw2x00: libipw_rx_any(): fix bad alignment
wifi: brcmfmac: release 'root' node in all execution paths
wifi: iwlwifi: mvm: don't call power_update_mac in fast suspend
wifi: iwlwifi: s/IWL_MVM_INVALID_STA/IWL_INVALID_STA
wifi: iwlwifi: bump minimum API version in BZ/SC to 92
wifi: iwlwifi: move IWL_LMAC_*_INDEX to fw/api/context.h
wifi: iwlwifi: be less noisy if the NIC is dead in S3
wifi: iwlwifi: mvm: tell iwlmei when we finished suspending
wifi: iwlwifi: allow fast resume on ax200
wifi: iwlwifi: mvm: support new initiator and responder command version
wifi: iwlwifi: mvm: use wiphy locked debugfs for low-latency
wifi: iwlwifi: mvm: MLO scan upon channel condition degradation
wifi: iwlwifi: mvm: support new versions of the wowlan APIs
wifi: iwlwifi: mvm: allow always calling iwl_mvm_get_bss_vif()
...
====================
Link: https://patch.msgid.link/20241113172918.A8A11C4CEC3@smtp.kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Commit 0f6deac3a0 ("net: page_pool: add page allocation stats for
two fast page allocate path") added increments for "fast path"
allocation to page frag alloc. It mentions performance degradation
analysis but the details are unclear. Could be that the author
was simply surprised by the alloc stats not matching packet count.
In my experience the key metric for page pool is the recycling rate.
Page return stats, however, count returned _pages_ not frags.
This makes it impossible to calculate recycling rate for drivers
using the frag API. Here is example output of the page-pool
YNL sample for a driver allocating 1200B frags (4k pages)
with nearly perfect recycling:
$ ./page-pool
eth0[2] page pools: 32 (zombies: 0)
refs: 291648 bytes: 1194590208 (refs: 0 bytes: 0)
recycling: 33.3% (alloc: 4557:2256365862 recycle: 200476245:551541893)
The recycling rate is reported as 33.3% because we give out
4096 // 1200 = 3 frags for every recycled page.
Effectively revert the aforementioned commit. This also aligns
with the stats we would see for drivers which do the fragmentation
themselves, although that's not a strong reason in itself.
On the (very unlikely) path where we can reuse the current page
let's bump the "cached" stat. The fact that we don't put the page
in the cache is just an optimization.
Acked-by: Jesper Dangaard Brouer <hawk@kernel.org>
Reviewed-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Link: https://patch.msgid.link/20241109023303.3366500-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In 'mptcp_reset_tout_timer', promote 'probe_timestamp' to unsigned long
to avoid possible integer overflow. Compile tested only.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Signed-off-by: Dmitry Kandybka <d.kandybka@gmail.com>
Link: https://patch.msgid.link/20241107103657.1560536-1-d.kandybka@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Support EHT 1024 aggregation size in TX
The 1024 agg size for RX is supported but not for TX.
This patch adds this support and refactors common parsing logics for
addbaext in both process_addba_resp and process_addba_req into a
function.
Reviewed-by: Shayne Chen <shayne.chen@mediatek.com>
Reviewed-by: Money Wang <money.wang@mediatek.com>
Co-developed-by: Peter Chiu <chui-hao.chiu@mediatek.com>
Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com>
Signed-off-by: MeiChia Chiu <MeiChia.Chiu@mediatek.com>
Link: https://patch.msgid.link/20241112083846.32063-1-MeiChia.Chiu@mediatek.com
[pass elems/len instead of mgmt/len/is_req]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We run into an exhaustion problem with the kernel-allocated filter IDs.
Our allocation problem can be fixed on the user space side,
but the error message in this case was quite misleading:
"Filter with specified priority/protocol not found" (EINVAL)
Specifically when we can't allocate a _new_ ID because filter with
lowest ID already _exists_, saying "filter not found", is confusing.
Kernel allocates IDs in range of 0xc0000 -> 0x8000, giving out ID one
lower than lowest existing in that range. The error message makes sense
when tcf_chain_tp_find() gets called for GET and DEL but for NEW we
need to provide more specific error messages for all three cases:
- user wants the ID to be auto-allocated but filter with ID 0x8000
already exists
- filter already exists and can be replaced, but user asked
for a protocol change
- filter doesn't exist
Caller of tcf_chain_tp_insert_unique() doesn't set extack today,
so don't bother plumbing it in.
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Link: https://patch.msgid.link/20241108010254.2995438-1-kuba@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Introduce a fault injection mechanism to force skb reallocation. The
primary goal is to catch bugs related to pointer invalidation after
potential skb reallocation.
The fault injection mechanism aims to identify scenarios where callers
retain pointers to various headers in the skb but fail to reload these
pointers after calling a function that may reallocate the data. This
type of bug can lead to memory corruption or crashes if the old,
now-invalid pointers are used.
By forcing reallocation through fault injection, we can stress-test code
paths and ensure proper pointer management after potential skb
reallocations.
Add a hook for fault injection in the following functions:
* pskb_trim_rcsum()
* pskb_may_pull_reason()
* pskb_trim()
As the other fault injection mechanism, protect it under a debug Kconfig
called CONFIG_FAIL_SKB_REALLOC.
This patch was *heavily* inspired by Jakub's proposal from:
https://lore.kernel.org/all/20240719174140.47a868e6@kernel.org/
CC: Akinobu Mita <akinobu.mita@gmail.com>
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Guillaume Nault <gnault@redhat.com>
Link: https://patch.msgid.link/20241107-fault_v6-v6-1-1b82cb6ecacd@debian.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
In this commit, we make ip_route_use_hint() return drop reasons. The
drop reasons that we return are similar to what we do in
ip_route_input_slow(), and no drop reasons are added in this commit.
Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
In this commit, we make ip_mkroute_input() and __mkroute_input() return
drop reasons.
The drop reason "SKB_DROP_REASON_ARP_PVLAN_DISABLE" is introduced for
the case: the packet which is not IP is forwarded to the in_dev, and
the proxy_arp_pvlan is not enabled.
Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
In this commit, we make ip_route_input() return skb drop reasons that come
from ip_route_input_noref().
Meanwhile, adjust all the call to it.
Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
In this commit, we make ip_route_input_noref() return drop reasons, which
come from ip_route_input_rcu().
We need adjust the callers of ip_route_input_noref() to make sure the
return value of ip_route_input_noref() is used properly.
The errno that ip_route_input_noref() returns comes from ip_route_input
and bpf_lwt_input_reroute in the origin logic, and we make them return
-EINVAL on error instead. In the following patch, we will make
ip_route_input() returns drop reasons too.
Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
In this commit, we make ip_route_input_rcu() return drop reasons, which
come from ip_route_input_mc() and ip_route_input_slow().
The only caller of ip_route_input_rcu() is ip_route_input_noref(). We
adjust it by making it return -EINVAL on error and ignore the reasons that
ip_route_input_rcu() returns. In the following patch, we will make
ip_route_input_noref() returns the drop reasons.
Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
In this commit, we make ip_route_input_slow() return skb drop reasons,
and following new skb drop reasons are added:
SKB_DROP_REASON_IP_INVALID_DEST
The only caller of ip_route_input_slow() is ip_route_input_rcu(), and we
adjust it by making it return -EINVAL on error.
Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Make ip_mc_validate_source() return drop reason, and adjust the call of
it in ip_route_input_mc().
Another caller of it is ip_rcv_finish_core->udp_v4_early_demux, and the
errno is not checked in detail, so we don't do more adjustment for it.
The drop reason "SKB_DROP_REASON_IP_LOCALNET" is added in this commit.
Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Make ip_route_input_mc() return drop reason, and adjust the call of it
in ip_route_input_rcu().
Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
In this commit, we make fib_validate_source() and __fib_validate_source()
return -reason instead of errno on error.
The return value of fib_validate_source can be -errno, 0, and 1. It's hard
to make fib_validate_source() return drop reasons directly.
The fib_validate_source() will return 1 if the scope of the source(revert)
route is HOST. And the __mkroute_input() will mark the skb with
IPSKB_DOREDIRECT in this case (combine with some other conditions). And
then, a REDIRECT ICMP will be sent in ip_forward() if this flag exists. We
can't pass this information to __mkroute_input if we make
fib_validate_source() return drop reasons.
Therefore, we introduce the wrapper fib_validate_source_reason() for
fib_validate_source(), which will return the drop reasons on error.
In the origin logic, LINUX_MIB_IPRPFILTER will be counted if
fib_validate_source() return -EXDEV. And now, we need to adjust it by
checking "reason == SKB_DROP_REASON_IP_RPFILTER". However, this will take
effect only after the patch "net: ip: make ip_route_input_noref() return
drop reasons", as we can't pass the drop reasons from
fib_validate_source() to ip_rcv_finish_core() in this patch.
Following new drop reasons are added in this patch:
SKB_DROP_REASON_IP_LOCAL_SOURCE
SKB_DROP_REASON_IP_INVALID_SOURCE
Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Check number of paths by fib_info_num_path(),
and update_or_create_fnhe() for every path.
Problem is that pmtu is cached only for the oif
that has received icmp message "need to frag",
other oifs will still try to use "default" iface mtu.
An example topology showing the problem:
| host1
+---------+
| dummy0 | 10.179.20.18/32 mtu9000
+---------+
+-----------+----------------+
+---------+ +---------+
| ens17f0 | 10.179.2.141/31 | ens17f1 | 10.179.2.13/31
+---------+ +---------+
| (all here have mtu 9000) |
+------+ +------+
| ro1 | 10.179.2.140/31 | ro2 | 10.179.2.12/31
+------+ +------+
| |
---------+------------+-------------------+------
|
+-----+
| ro3 | 10.10.10.10 mtu1500
+-----+
|
========================================
some networks
========================================
|
+-----+
| eth0| 10.10.30.30 mtu9000
+-----+
| host2
host1 have enabled multipath and
sysctl net.ipv4.fib_multipath_hash_policy = 1:
default proto static src 10.179.20.18
nexthop via 10.179.2.12 dev ens17f1 weight 1
nexthop via 10.179.2.140 dev ens17f0 weight 1
When host1 tries to do pmtud from 10.179.20.18/32 to host2,
host1 receives at ens17f1 iface an icmp packet from ro3 that ro3 mtu=1500.
And host1 caches it in nexthop exceptions cache.
Problem is that it is cached only for the iface that has received icmp,
and there is no way that ro3 will send icmp msg to host1 via another path.
Host1 now have this routes to host2:
ip r g 10.10.30.30 sport 30000 dport 443
10.10.30.30 via 10.179.2.12 dev ens17f1 src 10.179.20.18 uid 0
cache expires 521sec mtu 1500
ip r g 10.10.30.30 sport 30033 dport 443
10.10.30.30 via 10.179.2.140 dev ens17f0 src 10.179.20.18 uid 0
cache
So when host1 tries again to reach host2 with mtu>1500,
if packet flow is lucky enough to be hashed with oif=ens17f1 its ok,
if oif=ens17f0 it blackholes and still gets icmp msgs from ro3 to ens17f1,
until lucky day when ro3 will send it through another flow to ens17f0.
Signed-off-by: Vladimir Vdovin <deliran@verdict.gg>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20241108093427.317942-1-deliran@verdict.gg
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The napi_suspend_irqs routine bootstraps irq suspension by elongating
the defer timeout to irq_suspend_timeout.
The napi_resume_irqs routine effectively cancels irq suspension by
forcing the napi to be scheduled immediately.
Signed-off-by: Martin Karsten <mkarsten@uwaterloo.ca>
Co-developed-by: Joe Damato <jdamato@fastly.com>
Signed-off-by: Joe Damato <jdamato@fastly.com>
Tested-by: Joe Damato <jdamato@fastly.com>
Tested-by: Martin Karsten <mkarsten@uwaterloo.ca>
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Reviewed-by: Sridhar Samudrala <sridhar.samudrala@intel.com>
Link: https://patch.msgid.link/20241109050245.191288-3-jdamato@fastly.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add a per-NAPI IRQ suspension parameter, which can be get/set with
netdev-genl.
This patch doesn't change any behavior but prepares the code for other
changes in the following commits which use irq_suspend_timeout as a
timeout for IRQ suspension.
Signed-off-by: Martin Karsten <mkarsten@uwaterloo.ca>
Co-developed-by: Joe Damato <jdamato@fastly.com>
Signed-off-by: Joe Damato <jdamato@fastly.com>
Tested-by: Joe Damato <jdamato@fastly.com>
Tested-by: Martin Karsten <mkarsten@uwaterloo.ca>
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Reviewed-by: Sridhar Samudrala <sridhar.samudrala@intel.com>
Link: https://patch.msgid.link/20241109050245.191288-2-jdamato@fastly.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Currently, rtnl_setlink() and rtnl_dellink() cannot be fully converted
to per-netns RTNL due to a lack of handling peer/lower/upper devices in
different netns.
For example, when we change a device in rtnl_setlink() and need to
propagate that to its upper devices, we want to avoid acquiring all netns
locks, for which we do not know the upper limit.
The same situation happens when we remove a device.
rtnl_dellink() could be transformed to remove a single device in the
requested netns and delegate other devices to per-netns work, and
rtnl_setlink() might be ?
Until we come up with a better idea, let's use a new flag
RTNL_FLAG_DOIT_PERNET_WIP for rtnl_dellink() and rtnl_setlink().
This will unblock converting RTNL users where such devices are not related.
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20241108004823.29419-11-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Now, we are ready to convert rtnl_newlink() to per-netns RTNL;
rtnl_link_ops is protected by SRCU and netns is prefetched in
rtnl_newlink().
Let's register rtnl_newlink() with RTNL_FLAG_DOIT_PERNET and
push RTNL down as rtnl_nets_lock().
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://patch.msgid.link/20241108004823.29419-10-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In ops->newlink(), veth, vxcan, and netkit call rtnl_link_get_net() with
a net pointer, which is the first argument of ->newlink().
rtnl_link_get_net() could return another netns based on IFLA_NET_NS_PID
and IFLA_NET_NS_FD in the peer device's attributes.
We want to get it and fill rtnl_nets->nets[] in advance in rtnl_newlink()
for per-netns RTNL.
All of the three get the peer netns in the same way:
1. Call rtnl_nla_parse_ifinfomsg()
2. Call ops->validate() (vxcan doesn't have)
3. Call rtnl_link_get_net_tb()
Let's add a new field peer_type to struct rtnl_link_ops and prefetch
netns in the peer ifla to add it to rtnl_nets in rtnl_newlink().
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://patch.msgid.link/20241108004823.29419-6-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
rtnl_newlink() needs to hold 3 per-netns RTNL: 2 for a new device
and 1 for its peer.
We will add rtnl_nets_lock() later, which performs the nested locking
based on struct rtnl_nets, which has an array of struct net pointers.
rtnl_nets_add() adds a net pointer to the array and sorts it so that
rtnl_nets_lock() can simply acquire per-netns RTNL from array[0] to [2].
Before calling rtnl_nets_add(), get_net() must be called for the net,
and rtnl_nets_destroy() will call put_net() for each.
Let's apply the helpers to rtnl_newlink().
When CONFIG_DEBUG_NET_SMALL_RTNL is disabled, we do not call
rtnl_net_lock() thus do not care about the array order, so
rtnl_net_cmp_locks() returns -1 so that the loop in rtnl_nets_add()
can be optimised to NOP.
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://patch.msgid.link/20241108004823.29419-5-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
link_ops is protected by link_ops_mutex and no longer needs RTNL,
so we have no reason to have __rtnl_link_register() separately.
Let's remove it and call rtnl_link_register() from ifb.ko and
dummy.ko.
Note that both modules' init() work on init_net only, so we need
not export pernet_ops_rwsem and can use rtnl_net_lock() there.
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://patch.msgid.link/20241108004823.29419-4-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
rtnl_link_unregister() holds RTNL and calls synchronize_srcu(),
but rtnl_newlink() will acquire SRCU frist and then RTNL.
Then, we need to unlink ops and call synchronize_srcu() outside
of RTNL to avoid the deadlock.
rtnl_link_unregister() rtnl_newlink()
---- ----
lock(rtnl_mutex);
lock(&ops->srcu);
lock(rtnl_mutex);
sync(&ops->srcu);
Let's move as such and add a mutex to protect link_ops.
Now, link_ops is protected by its dedicated mutex and
rtnl_link_register() no longer needs to hold RTNL.
While at it, we move the initialisation of ops->dellink and
ops->srcu out of the mutex scope.
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://patch.msgid.link/20241108004823.29419-3-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
rtnl_link_unregister() holds RTNL and calls __rtnl_link_unregister(),
where we call synchronize_srcu() to wait inflight RTM_NEWLINK requests
for per-netns RTNL.
We put synchronize_srcu() in __rtnl_link_unregister() due to ifb.ko
and dummy.ko.
However, rtnl_newlink() will acquire SRCU before RTNL later in this
series. Then, lockdep will detect the deadlock:
rtnl_link_unregister() rtnl_newlink()
---- ----
lock(rtnl_mutex);
lock(&ops->srcu);
lock(rtnl_mutex);
sync(&ops->srcu);
To avoid the problem, we must call synchronize_srcu() before RTNL in
rtnl_link_unregister().
As a preparation, let's remove __rtnl_link_unregister().
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://patch.msgid.link/20241108004823.29419-2-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This patch adds support for VLAN ctag based filtering at slave devices.
The slave ethernet device may be capable of filtering ethernet packets
based on VLAN ID. This requires that when the VLAN interface is created
over an HSR/PRP interface, it passes the VID information to the
associated slave ethernet devices so that it updates the hardware
filters to filter ethernet frames based on VID. This patch adds the
required functions to propagate the vid information to the slave
devices.
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://patch.msgid.link/20241106091710.3308519-3-danishanwar@ti.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add a tracepoint to rxrpc to trace the proposal of an abort. The abort is
performed asynchronously by the I/O thread.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: Simon Horman <horms@kernel.org>
cc: linux-afs@lists.infradead.org
Link: https://patch.msgid.link/726356.1730898045@warthog.procyon.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Soft lockups have been observed on a cluster of Linux-based edge routers
located in a highly dynamic environment. Using the `bird` service, these
routers continuously update BGP-advertised routes due to frequently
changing nexthop destinations, while also managing significant IPv6
traffic. The lockups occur during the traversal of the multipath
circular linked-list in the `fib6_select_path` function, particularly
while iterating through the siblings in the list. The issue typically
arises when the nodes of the linked list are unexpectedly deleted
concurrently on a different core—indicated by their 'next' and
'previous' elements pointing back to the node itself and their reference
count dropping to zero. This results in an infinite loop, leading to a
soft lockup that triggers a system panic via the watchdog timer.
Apply RCU primitives in the problematic code sections to resolve the
issue. Where necessary, update the references to fib6_siblings to
annotate or use the RCU APIs.
Include a test script that reproduces the issue. The script
periodically updates the routing table while generating a heavy load
of outgoing IPv6 traffic through multiple iperf3 clients. It
consistently induces infinite soft lockups within a couple of minutes.
Kernel log:
0 [ffffbd13003e8d30] machine_kexec at ffffffff8ceaf3eb
1 [ffffbd13003e8d90] __crash_kexec at ffffffff8d0120e3
2 [ffffbd13003e8e58] panic at ffffffff8cef65d4
3 [ffffbd13003e8ed8] watchdog_timer_fn at ffffffff8d05cb03
4 [ffffbd13003e8f08] __hrtimer_run_queues at ffffffff8cfec62f
5 [ffffbd13003e8f70] hrtimer_interrupt at ffffffff8cfed756
6 [ffffbd13003e8fd0] __sysvec_apic_timer_interrupt at ffffffff8cea01af
7 [ffffbd13003e8ff0] sysvec_apic_timer_interrupt at ffffffff8df1b83d
-- <IRQ stack> --
8 [ffffbd13003d3708] asm_sysvec_apic_timer_interrupt at ffffffff8e000ecb
[exception RIP: fib6_select_path+299]
RIP: ffffffff8ddafe7b RSP: ffffbd13003d37b8 RFLAGS: 00000287
RAX: ffff975850b43600 RBX: ffff975850b40200 RCX: 0000000000000000
RDX: 000000003fffffff RSI: 0000000051d383e4 RDI: ffff975850b43618
RBP: ffffbd13003d3800 R8: 0000000000000000 R9: ffff975850b40200
R10: 0000000000000000 R11: 0000000000000000 R12: ffffbd13003d3830
R13: ffff975850b436a8 R14: ffff975850b43600 R15: 0000000000000007
ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018
9 [ffffbd13003d3808] ip6_pol_route at ffffffff8ddb030c
10 [ffffbd13003d3888] ip6_pol_route_input at ffffffff8ddb068c
11 [ffffbd13003d3898] fib6_rule_lookup at ffffffff8ddf02b5
12 [ffffbd13003d3928] ip6_route_input at ffffffff8ddb0f47
13 [ffffbd13003d3a18] ip6_rcv_finish_core.constprop.0 at ffffffff8dd950d0
14 [ffffbd13003d3a30] ip6_list_rcv_finish.constprop.0 at ffffffff8dd96274
15 [ffffbd13003d3a98] ip6_sublist_rcv at ffffffff8dd96474
16 [ffffbd13003d3af8] ipv6_list_rcv at ffffffff8dd96615
17 [ffffbd13003d3b60] __netif_receive_skb_list_core at ffffffff8dc16fec
18 [ffffbd13003d3be0] netif_receive_skb_list_internal at ffffffff8dc176b3
19 [ffffbd13003d3c50] napi_gro_receive at ffffffff8dc565b9
20 [ffffbd13003d3c80] ice_receive_skb at ffffffffc087e4f5 [ice]
21 [ffffbd13003d3c90] ice_clean_rx_irq at ffffffffc0881b80 [ice]
22 [ffffbd13003d3d20] ice_napi_poll at ffffffffc088232f [ice]
23 [ffffbd13003d3d80] __napi_poll at ffffffff8dc18000
24 [ffffbd13003d3db8] net_rx_action at ffffffff8dc18581
25 [ffffbd13003d3e40] __do_softirq at ffffffff8df352e9
26 [ffffbd13003d3eb0] run_ksoftirqd at ffffffff8ceffe47
27 [ffffbd13003d3ec0] smpboot_thread_fn at ffffffff8cf36a30
28 [ffffbd13003d3ee8] kthread at ffffffff8cf2b39f
29 [ffffbd13003d3f28] ret_from_fork at ffffffff8ce5fa64
30 [ffffbd13003d3f50] ret_from_fork_asm at ffffffff8ce03cbb
Fixes: 66f5d6ce53 ("ipv6: replace rwlock with rcu and spinlock in fib6_table")
Reported-by: Adrian Oliver <kernel@aoliver.ca>
Signed-off-by: Omid Ehtemam-Haghighi <omid.ehtemamhaghighi@menlosecurity.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Ido Schimmel <idosch@idosch.org>
Cc: Kuniyuki Iwashima <kuniyu@amazon.com>
Cc: Simon Horman <horms@kernel.org>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://patch.msgid.link/20241106010236.1239299-1-omid.ehtemamhaghighi@menlosecurity.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Use appropriate frag_page API instead of caller accessing
'page_frag_cache' directly.
CC: Andrew Morton <akpm@linux-foundation.org>
CC: Linux-MM <linux-mm@kvack.org>
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Acked-by: Chuck Lever <chuck.lever@oracle.com>
Link: https://patch.msgid.link/20241028115343.3405838-5-linyunsheng@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Most of the original conversion is from the spatch below,
but I edited some and left out other instances that were
either buggy after conversion (where default values don't
fit into the type) or just looked strange.
@@
expression attr, def;
expression val;
identifier fn =~ "^nla_get_.*";
fresh identifier dfn = fn ## "_default";
@@
(
-if (attr)
- val = fn(attr);
-else
- val = def;
+val = dfn(attr, def);
|
-if (!attr)
- val = def;
-else
- val = fn(attr);
+val = dfn(attr, def);
|
-if (!attr)
- return def;
-return fn(attr);
+return dfn(attr, def);
|
-attr ? fn(attr) : def
+dfn(attr, def)
|
-!attr ? def : fn(attr)
+dfn(attr, def)
)
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: Toke Høiland-Jørgensen <toke@kernel.org>
Link: https://patch.msgid.link/20241108114145.0580b8684e7f.I740beeaa2f70ebfc19bfca1045a24d6151992790@changeid
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
It is currently impossible to delete individual FDB entries (as opposed
to flushing) that were added with a VLAN that no longer exists:
# ip link add name dummy1 up type dummy
# ip link add name br1 up type bridge vlan_filtering 1
# ip link set dev dummy1 master br1
# bridge fdb add 00:11:22:33:44:55 dev dummy1 master static vlan 1
# bridge vlan del vid 1 dev dummy1
# bridge fdb get 00:11:22:33:44:55 br br1 vlan 1
00:11:22:33:44:55 dev dummy1 vlan 1 master br1 static
# bridge fdb del 00:11:22:33:44:55 dev dummy1 master vlan 1
RTNETLINK answers: Invalid argument
# bridge fdb get 00:11:22:33:44:55 br br1 vlan 1
00:11:22:33:44:55 dev dummy1 vlan 1 master br1 static
This is in contrast to MDB entries that can be deleted after the VLAN
was deleted:
# bridge vlan add vid 10 dev dummy1
# bridge mdb add dev br1 port dummy1 grp 239.1.1.1 permanent vid 10
# bridge vlan del vid 10 dev dummy1
# bridge mdb get dev br1 grp 239.1.1.1 vid 10
dev br1 port dummy1 grp 239.1.1.1 permanent vid 10
# bridge mdb del dev br1 port dummy1 grp 239.1.1.1 permanent vid 10
# bridge mdb get dev br1 grp 239.1.1.1 vid 10
Error: bridge: MDB entry not found.
Align the two interfaces and allow user space to delete FDB entries that
were added with a VLAN that no longer exists:
# ip link add name dummy1 up type dummy
# ip link add name br1 up type bridge vlan_filtering 1
# ip link set dev dummy1 master br1
# bridge fdb add 00:11:22:33:44:55 dev dummy1 master static vlan 1
# bridge vlan del vid 1 dev dummy1
# bridge fdb get 00:11:22:33:44:55 br br1 vlan 1
00:11:22:33:44:55 dev dummy1 vlan 1 master br1 static
# bridge fdb del 00:11:22:33:44:55 dev dummy1 master vlan 1
# bridge fdb get 00:11:22:33:44:55 br br1 vlan 1
Error: Fdb entry not found.
Add a selftest to make sure this behavior does not regress:
# ./rtnetlink.sh -t kci_test_fdb_del
PASS: bridge fdb del
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Andy Roulin <aroulin@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://patch.msgid.link/20241105133954.350479-1-idosch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Create a mapping between a netdev and its neighoburs,
allowing for much cheaper flushes.
Signed-off-by: Gilad Naaman <gnaaman@drivenets.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://patch.msgid.link/20241107160444.2913124-7-gnaaman@drivenets.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Remove all usage of the bare neighbour::next pointer,
replacing them with neighbour::hash and its for_each macro.
Signed-off-by: Gilad Naaman <gnaaman@drivenets.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20241107160444.2913124-5-gnaaman@drivenets.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Convert seq_file-related neighbour functionality to use neighbour::hash
and the related for_each macro.
Signed-off-by: Gilad Naaman <gnaaman@drivenets.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20241107160444.2913124-4-gnaaman@drivenets.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add a doubly-linked node to neighbours, so that they
can be deleted without iterating the entire bucket they're in.
Signed-off-by: Gilad Naaman <gnaaman@drivenets.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20241107160444.2913124-2-gnaaman@drivenets.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When hvs is released, there is a possibility that vsk->trans may not
be initialized to NULL, which could lead to a dangling pointer.
This issue is resolved by initializing vsk->trans to NULL.
Signed-off-by: Hyunwoo Kim <v4bel@theori.io>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Link: https://patch.msgid.link/Zys4hCj61V+mQfX2@v4bel-B760M-AORUS-ELITE-AX
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The variable has already been assigned in the subflow_create_ctx(),
So we don't need to reassign this variable in the subflow_ulp_clone().
Signed-off-by: MoYuanhao <moyuanhao3676@163.com>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20241106071035.2591-1-moyuanhao3676@163.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
MCTP control protocol implementations are transport binding dependent.
Endpoint discovery is mandatory based on transport binding.
Message timing requirements are specified in each respective transport
binding specification.
However, we currently have no means to get this information from MCTP
links.
Add a IFLA_MCTP_PHYS_BINDING netlink link attribute, which represents
the transport type using the DMTF DSP0239-defined type numbers, returned
as part of RTM_GETLINK data.
We get an IFLA_MCTP_PHYS_BINDING attribute for each MCTP link, for
example:
- 0x00 (unspec) for loopback interface;
- 0x01 (SMBus/I2C) for mctpi2c%d interfaces; and
- 0x05 (serial) for mctpserial%d interfaces.
Signed-off-by: Khang Nguyen <khangng@os.amperecomputing.com>
Reviewed-by: Matt Johnston <matt@codeconstruct.com.au>
Link: https://patch.msgid.link/20241105071915.821871-1-khangng@os.amperecomputing.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Convert the "tos" parameter of ip_route_output() to dscp_t. This way
we'll have a dscp_t value directly available when .flowi4_tos will
eventually be converted to dscp_t.
All ip_route_output() callers but one set this "tos" parameter to 0 and
therefore don't need to be adapted to the new prototype.
Only br_nf_pre_routing_finish() needs conversion. It can just use
ip4h_dscp() to get the DSCP field from the IPv4 header.
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/0f10d031dd44c70aae9bc6e19391cb30d5c2fe71.1730928699.git.gnault@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Things are slowing down quite a bit, mostly driver fixes here.
No known ongoing investigations.
Current release - new code bugs:
- eth: ti: am65-cpsw:
- fix multi queue Rx on J7
- fix warning in am65_cpsw_nuss_remove_rx_chns()
Previous releases - regressions:
- mptcp: do not require admin perm to list endpoints, got missed
in a refactoring
- mptcp: use sock_kfree_s instead of kfree
Previous releases - always broken:
- sctp: properly validate chunk size in sctp_sf_ootb() fix OOB access
- virtio_net: make RSS interact properly with queue number
- can: mcp251xfd: mcp251xfd_get_tef_len(): fix length calculation
- can: mcp251xfd: mcp251xfd_ring_alloc(): fix coalescing configuration
when switching CAN modes
Misc:
- revert earlier hns3 fixes, they were ignoring IOMMU abstractions
and need to be reworked
- can: {cc770,sja1000}_isa: allow building on x86_64
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-6.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from can and netfilter.
Things are slowing down quite a bit, mostly driver fixes here. No
known ongoing investigations.
Current release - new code bugs:
- eth: ti: am65-cpsw:
- fix multi queue Rx on J7
- fix warning in am65_cpsw_nuss_remove_rx_chns()
Previous releases - regressions:
- mptcp: do not require admin perm to list endpoints, got missed in a
refactoring
- mptcp: use sock_kfree_s instead of kfree
Previous releases - always broken:
- sctp: properly validate chunk size in sctp_sf_ootb() fix OOB access
- virtio_net: make RSS interact properly with queue number
- can: mcp251xfd: mcp251xfd_get_tef_len(): fix length calculation
- can: mcp251xfd: mcp251xfd_ring_alloc(): fix coalescing
configuration when switching CAN modes
Misc:
- revert earlier hns3 fixes, they were ignoring IOMMU abstractions
and need to be reworked
- can: {cc770,sja1000}_isa: allow building on x86_64"
* tag 'net-6.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (42 commits)
drivers: net: ionic: add missed debugfs cleanup to ionic_probe() error path
net/smc: do not leave a dangling sk pointer in __smc_create()
rxrpc: Fix missing locking causing hanging calls
net/smc: Fix lookup of netdev by using ib_device_get_netdev()
net: arc: rockchip: fix emac mdio node support
net: arc: fix the device for dma_map_single/dma_unmap_single
virtio_net: Update rss when set queue
virtio_net: Sync rss config to device when virtnet_probe
virtio_net: Add hash_key_length check
virtio_net: Support dynamic rss indirection table size
netfilter: nf_tables: wait for rcu grace period on net_device removal
net: stmmac: Fix unbalanced IRQ wake disable warning on single irq case
net: vertexcom: mse102x: Fix possible double free of TX skb
mptcp: use sock_kfree_s instead of kfree
mptcp: no admin perm to list endpoints
net: phy: ti: add PHY_RST_AFTER_CLK_EN flag
net: ethernet: ti: am65-cpsw: fix warning in am65_cpsw_nuss_remove_rx_chns()
net: ethernet: ti: am65-cpsw: Fix multi queue Rx on J7
net: hns3: fix kernel crash when uninstalling driver
Revert "Merge branch 'there-are-some-bugfix-for-the-hns3-ethernet-driver'"
...
If a call gets aborted (e.g. because kafs saw a signal) between it being
queued for connection and the I/O thread picking up the call, the abort
will be prioritised over the connection and it will be removed from
local->new_client_calls by rxrpc_disconnect_client_call() without a lock
being held. This may cause other calls on the list to disappear if a race
occurs.
Fix this by taking the client_call_lock when removing a call from whatever
list its ->wait_link happens to be on.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: linux-afs@lists.infradead.org
Reported-by: Marc Dionne <marc.dionne@auristor.com>
Fixes: 9d35d880e0 ("rxrpc: Move client call connection to the I/O thread")
Link: https://patch.msgid.link/726660.1730898202@warthog.procyon.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The SMC-R variant of the SMC protocol used direct call to function
ib_device_ops.get_netdev() to lookup netdev. As we used mlx5 device
driver to run SMC-R, it failed to find a device, because in mlx5_ib the
internal net device management for retrieving net devices was replaced
by a common interface ib_device_get_netdev() in commit 8d159eb211
("RDMA/mlx5: Use IB set_netdev and get_netdev functions").
Since such direct accesses to the internal net device management is not
recommended at all, update the SMC-R code to use proper API
ib_device_get_netdev().
Fixes: 54903572c2 ("net/smc: allow pnetid-less configuration")
Reported-by: Aswin K <aswin@linux.ibm.com>
Reviewed-by: Gerd Bayer <gbayer@linux.ibm.com>
Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Dust Li <dust.li@linux.alibaba.com>
Reviewed-by: Wen Gu <guwen@linux.alibaba.com>
Reviewed-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Reviewed-by: D. Wythe <alibuda@linux.alibaba.com>
Signed-off-by: Wenjia Zhang <wenjia@linux.ibm.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Link: https://patch.msgid.link/20241106082612.57803-1-wenjia@linux.ibm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'nf-24-11-07' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf
Pablo Neira Ayuso says:
====================
Netfilter fix for net
The following series contains a Netfilter fix:
1) Wait for rcu grace period after netdevice removal is reported via event.
* tag 'nf-24-11-07' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
netfilter: nf_tables: wait for rcu grace period on net_device removal
====================
Link: https://patch.msgid.link/20241107113212.116634-1-pablo@netfilter.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
