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cfg80211 has cfg80211_chandef_dfs_usable() function to know whether
at least one channel in the chandef is in usable state or not. Also,
cfg80211_chandef_dfs_cac_time() function is there which tells the CAC
time required for the given chandef.
Make these two functions visible to drivers by exporting their symbol
to global list of kernel symbols.
Lower level drivers can make use of these two functions to be aware
if CAC is required on the given chandef and for how long. For example
drivers which maintains the CAC state internally can make use of these.
Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com>
Reviewed-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20230912051857.2284-2-quic_adisi@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Currently the channel property updates are not propagated to
driver. This causes issues in the discovery of hidden SSIDs and
fails to connect to them.
This change defines a new wiphy flag which when enabled by vendor
driver, the reg_call_notifier callback will be trigger on beacon
hints. This ensures that the channel property changes are visible
to the vendor driver. The vendor changes the channels for active
scans. This fixes the discovery issue of hidden SSID.
Signed-off-by: Abhishek Kumar <kuabhs@chromium.org>
Link: https://lore.kernel.org/r/20230629035254.1.I059fe585f9f9e896c2d51028ef804d197c8c009e@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Currently regulatory update by driver is not allowed when the
wiphy->regd is already set and drivers_request->intersect is false.
During wiphy registration, some drivers (ath10k does this currently)
first register the world regulatory to cfg80211 using
wiphy_apply_custom_regulatory(). The driver then obtain the current
operating country and tries to update the correct regulatory to
cfg80211 using regulatory_hint().
But at this point, wiphy->regd is already set to world regulatory.
Also, since this is the first request from driver after the world
regulatory is set this will result in drivers_request->intersect
set to false. In this condition the driver request regulatory is not
allowed to update to cfg80211 in reg_set_rd_driver(). This restricts
the device operation to the world regulatory.
This driver request to update the regulatory with current operating
country is valid and should be updated to cfg80211. Hence allow
regulatory update by driver even if the wiphy->regd is already set
and driver_request->intersect is false.
Signed-off-by: Raj Kumar Bhagat <quic_rajkbhag@quicinc.com>
Reviewed-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20230421061312.13722-1-quic_rajkbhag@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Process FILS discovery and unsolicited broadcast probe response
transmission configurations in ieee80211_change_beacon().
Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com>
Reviewed-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20230727174100.11721-6-quic_alokad@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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FILS discovery and unsolicited broadcast probe response templates
need to be updated along with beacon templates in some cases such as
the channel switch operation. Add the missing implementation.
Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com>
Reviewed-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20230727174100.11721-5-quic_alokad@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Modify the prototype for change_beacon() in struct cfg80211_op to
accept cfg80211_ap_settings instead of cfg80211_beacon_data so that
it can process data in addition to beacons.
Modify the prototypes of ieee80211_change_beacon() and driver specific
functions accordingly.
Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com>
Reviewed-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20230727174100.11721-4-quic_alokad@quicinc.com
[while at it, remove pointless "if (info)" check in tracing that just
makes all the lines longer than they need be - it's never NULL]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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FILS discovery configuration gets updated only if the maximum interval
is set to a non-zero value, hence there is no way to reset this value
to 0 once set. Replace the check for interval with a new flag which is
set only if the configuration should be updated.
Add similar changes for the unsolicited broadcast probe response handling.
Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com>
Reviewed-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20230727174100.11721-3-quic_alokad@quicinc.com
[move NULL'ing to else branch to not have intermediate NULL visible]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Add a new flag 'update' which is set to true during start_ap()
if (and only if) one of the following two conditions are met:
- Userspace passed an empty nested attribute which indicates that
the feature should be disabled and templates deleted.
- Userspace passed all the parameters for the nested attribute.
Existing configuration will not be changed while the flag
remains false.
Add similar changes for unsolicited broadcast probe response
transmission.
Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com>
Reviewed-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20230727174100.11721-2-quic_alokad@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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clang with W=1 reports
net/wireless/lib80211_crypt_tkip.c:667:7: error: variable 'iv32'
set but not used [-Werror,-Wunused-but-set-variable]
u32 iv32 = tkey->tx_iv32;
^
This variable not used so remove it.
Then remove a similar iv16 variable.
Change the comment because the unmodified value is returned.
Signed-off-by: Tom Rix <trix@redhat.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20230517123310.873023-1-trix@redhat.com
[change commit log wrt. 'length', add comment in the code]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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We really cannot even get into this as we can't have
a BSS with a 5/10 MHz (scan) width, and therefore all
the code handling shifted rates cannot happen. Remove
it all, since it's broken anyway, at least with MLO.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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There really isn't any support for scanning at different
channel widths than 20 MHz since there's no way to set it.
Remove this support for now, if somebody wants to maintain
this whole thing later we can revisit how it should work.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Since 'sprintf()' returns the number of characters emitted, an
extra calls to 'strlen()' in 'ieee80211_bss()' may be dropped.
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Link: https://lore.kernel.org/r/20230912035522.15947-1-dmantipov@yandex.ru
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Since the changed field size was increased to u64, mesh_bss_info_changed
pulls invalid bits from the first 3 bytes of the mesh id, clears them, and
passes them on to ieee80211_link_info_change_notify, because
ifmsh->mbss_changed was not updated to match its size.
Fix this by turning into ifmsh->mbss_changed into an unsigned long array with
64 bit size.
Fixes: 15ddba5f4311 ("wifi: mac80211: consistently use u64 for BSS changes")
Reported-by: Thomas Hühn <thomas.huehn@hs-nordhausen.de>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20230913050134.53536-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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xfrm_gen_index() mutual exclusion uses net->xfrm.xfrm_policy_lock.
This means we must use a per-netns idx_generator variable,
instead of a static one.
Alternative would be to use an atomic variable.
syzbot reported:
BUG: KCSAN: data-race in xfrm_sk_policy_insert / xfrm_sk_policy_insert
write to 0xffffffff87005938 of 4 bytes by task 29466 on cpu 0:
xfrm_gen_index net/xfrm/xfrm_policy.c:1385 [inline]
xfrm_sk_policy_insert+0x262/0x640 net/xfrm/xfrm_policy.c:2347
xfrm_user_policy+0x413/0x540 net/xfrm/xfrm_state.c:2639
do_ipv6_setsockopt+0x1317/0x2ce0 net/ipv6/ipv6_sockglue.c:943
ipv6_setsockopt+0x57/0x130 net/ipv6/ipv6_sockglue.c:1012
rawv6_setsockopt+0x21e/0x410 net/ipv6/raw.c:1054
sock_common_setsockopt+0x61/0x70 net/core/sock.c:3697
__sys_setsockopt+0x1c9/0x230 net/socket.c:2263
__do_sys_setsockopt net/socket.c:2274 [inline]
__se_sys_setsockopt net/socket.c:2271 [inline]
__x64_sys_setsockopt+0x66/0x80 net/socket.c:2271
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
read to 0xffffffff87005938 of 4 bytes by task 29460 on cpu 1:
xfrm_sk_policy_insert+0x13e/0x640
xfrm_user_policy+0x413/0x540 net/xfrm/xfrm_state.c:2639
do_ipv6_setsockopt+0x1317/0x2ce0 net/ipv6/ipv6_sockglue.c:943
ipv6_setsockopt+0x57/0x130 net/ipv6/ipv6_sockglue.c:1012
rawv6_setsockopt+0x21e/0x410 net/ipv6/raw.c:1054
sock_common_setsockopt+0x61/0x70 net/core/sock.c:3697
__sys_setsockopt+0x1c9/0x230 net/socket.c:2263
__do_sys_setsockopt net/socket.c:2274 [inline]
__se_sys_setsockopt net/socket.c:2271 [inline]
__x64_sys_setsockopt+0x66/0x80 net/socket.c:2271
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
value changed: 0x00006ad8 -> 0x00006b18
Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 29460 Comm: syz-executor.1 Not tainted 6.5.0-rc5-syzkaller-00243-g9106536c1aa3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Fixes: 1121994c803f ("netns xfrm: policy insertion in netns")
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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Since bhash2 was introduced, the example below does not work as expected.
These two bind() should conflict, but the 2nd bind() now succeeds.
from socket import *
s1 = socket(AF_INET6, SOCK_STREAM)
s1.bind(('::ffff:127.0.0.1', 0))
s2 = socket(AF_INET, SOCK_STREAM)
s2.bind(('127.0.0.1', s1.getsockname()[1]))
During the 2nd bind() in inet_csk_get_port(), inet_bind2_bucket_find()
fails to find the 1st socket's tb2, so inet_bind2_bucket_create() allocates
a new tb2 for the 2nd socket. Then, we call inet_csk_bind_conflict() that
checks conflicts in the new tb2 by inet_bhash2_conflict(). However, the
new tb2 does not include the 1st socket, thus the bind() finally succeeds.
In this case, inet_bind2_bucket_match() must check if AF_INET6 tb2 has
the conflicting v4-mapped-v6 address so that inet_bind2_bucket_find()
returns the 1st socket's tb2.
Note that if we bind two sockets to 127.0.0.1 and then ::FFFF:127.0.0.1,
the 2nd bind() fails properly for the same reason mentinoed in the previous
commit.
Fixes: 28044fc1d495 ("net: Add a bhash2 table hashed by port and address")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: Andrei Vagin <avagin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Andrei Vagin reported bind() regression with strace logs.
If we bind() a TCPv6 socket to ::FFFF:0.0.0.0 and then bind() a TCPv4
socket to 127.0.0.1, the 2nd bind() should fail but now succeeds.
from socket import *
s1 = socket(AF_INET6, SOCK_STREAM)
s1.bind(('::ffff:0.0.0.0', 0))
s2 = socket(AF_INET, SOCK_STREAM)
s2.bind(('127.0.0.1', s1.getsockname()[1]))
During the 2nd bind(), if tb->family is AF_INET6 and sk->sk_family is
AF_INET in inet_bind2_bucket_match_addr_any(), we still need to check
if tb has the v4-mapped-v6 wildcard address.
The example above does not work after commit 5456262d2baa ("net: Fix
incorrect address comparison when searching for a bind2 bucket"), but
the blamed change is not the commit.
Before the commit, the leading zeros of ::FFFF:0.0.0.0 were treated
as 0.0.0.0, and the sequence above worked by chance. Technically, this
case has been broken since bhash2 was introduced.
Note that if we bind() two sockets to 127.0.0.1 and then ::FFFF:0.0.0.0,
the 2nd bind() fails properly because we fall back to using bhash to
detect conflicts for the v4-mapped-v6 address.
Fixes: 28044fc1d495 ("net: Add a bhash2 table hashed by port and address")
Reported-by: Andrei Vagin <avagin@google.com>
Closes: https://lore.kernel.org/netdev/ZPuYBOFC8zsK6r9T@google.com/
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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inet_bind2_bucket_match(_addr_any).
This is a prep patch to make the following patches cleaner that touch
inet_bind2_bucket_match() and inet_bind2_bucket_match_addr_any().
Both functions have duplicated comparison for netns, port, and l3mdev.
Let's factorise them.
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue
Tony Nguyen says:
====================
Intel Wired LAN Driver Updates 2023-09-11 (i40e, iavf)
This series contains updates to i40e and iavf drivers.
Andrii ensures all VSIs are cleaned up for remove in i40e.
Brett reworks logic for setting promiscuous mode that can, currently, cause
incorrect states on iavf.
---
v2:
- Remove redundant i40e_vsi_free_q_vectors() and kfree() calls (patch 1)
v1: https://lore.kernel.org/netdev/20230905180521.887861-1-anthony.l.nguyen@intel.com/
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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This idea came after a particular workload requested
the quickack attribute set on routes, and a performance
drop was noticed for large bulk transfers.
For high throughput flows, it is best to use one cpu
running the user thread issuing socket system calls,
and a separate cpu to process incoming packets from BH context.
(With TSO/GRO, bottleneck is usually the 'user' cpu)
Problem is the user thread can spend a lot of time while holding
the socket lock, forcing BH handler to queue most of incoming
packets in the socket backlog.
Whenever the user thread releases the socket lock, it must first
process all accumulated packets in the backlog, potentially
adding latency spikes. Due to flood mitigation, having too many
packets in the backlog increases chance of unexpected drops.
Backlog processing unfortunately shifts a fair amount of cpu cycles
from the BH cpu to the 'user' cpu, thus reducing max throughput.
This patch takes advantage of the backlog processing,
and the fact that ACK are mostly cumulative.
The idea is to detect we are in the backlog processing
and defer all eligible ACK into a single one,
sent from tcp_release_cb().
This saves cpu cycles on both sides, and network resources.
Performance of a single TCP flow on a 200Gbit NIC:
- Throughput is increased by 20% (100Gbit -> 120Gbit).
- Number of generated ACK per second shrinks from 240,000 to 40,000.
- Number of backlog drops per second shrinks from 230 to 0.
Benchmark context:
- Regular netperf TCP_STREAM (no zerocopy)
- Intel(R) Xeon(R) Platinum 8481C (Saphire Rapids)
- MAX_SKB_FRAGS = 17 (~60KB per GRO packet)
This feature is guarded by a new sysctl, and enabled by default:
/proc/sys/net/ipv4/tcp_backlog_ack_defer
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Dave Taht <dave.taht@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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__sk_flush_backlog() / sk_flush_backlog() are used
when TCP recvmsg()/sendmsg() process large chunks,
to not let packets in the backlog too long.
It makes sense to call tcp_release_cb() to also
process actions held in sk->sk_tsq_flags for smoother
scheduling.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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This partially reverts c3f9b01849ef ("tcp: tcp_release_cb()
should release socket ownership").
prequeue has been removed by Florian in commit e7942d0633c4
("tcp: remove prequeue support")
__tcp_checksum_complete_user() being gone, we no longer
have to release socket ownership in tcp_release_cb().
This is a prereq for third patch in the series
("net: call prot->release_cb() when processing backlog").
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Since commit 1202cdd66531("Remove DECnet support from kernel") has been
merged, all callers pass in the initial_ref value of 1 when they call
dst_alloc(). Therefore, remove initial_ref when the dst_alloc() is
declared and replace initial_ref with 1 in dst_alloc().
Also when all callers call dst_init(), the value of initial_ref is 1.
Therefore, remove the input parameter initial_ref of the dst_init() and
replace initial_ref with the value 1 in dst_init.
Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Link: https://lore.kernel.org/r/20230911125045.346390-1-shaozhengchao@huawei.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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I got the below warning when do fuzzing test:
BUG: KASAN: null-ptr-deref in scatterwalk_copychunks+0x320/0x470
Read of size 4 at addr 0000000000000008 by task kworker/u8:1/9
CPU: 0 PID: 9 Comm: kworker/u8:1 Tainted: G OE
Hardware name: linux,dummy-virt (DT)
Workqueue: pencrypt_parallel padata_parallel_worker
Call trace:
dump_backtrace+0x0/0x420
show_stack+0x34/0x44
dump_stack+0x1d0/0x248
__kasan_report+0x138/0x140
kasan_report+0x44/0x6c
__asan_load4+0x94/0xd0
scatterwalk_copychunks+0x320/0x470
skcipher_next_slow+0x14c/0x290
skcipher_walk_next+0x2fc/0x480
skcipher_walk_first+0x9c/0x110
skcipher_walk_aead_common+0x380/0x440
skcipher_walk_aead_encrypt+0x54/0x70
ccm_encrypt+0x13c/0x4d0
crypto_aead_encrypt+0x7c/0xfc
pcrypt_aead_enc+0x28/0x84
padata_parallel_worker+0xd0/0x2dc
process_one_work+0x49c/0xbdc
worker_thread+0x124/0x880
kthread+0x210/0x260
ret_from_fork+0x10/0x18
This is because the value of rec_seq of tls_crypto_info configured by the
user program is too large, for example, 0xffffffffffffff. In addition, TLS
is asynchronously accelerated. When tls_do_encryption() returns
-EINPROGRESS and sk->sk_err is set to EBADMSG due to rec_seq overflow,
skmsg is released before the asynchronous encryption process ends. As a
result, the UAF problem occurs during the asynchronous processing of the
encryption module.
If the operation is asynchronous and the encryption module returns
EINPROGRESS, do not free the record information.
Fixes: 635d93981786 ("net/tls: free record only on encryption error")
Signed-off-by: Liu Jian <liujian56@huawei.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Link: https://lore.kernel.org/r/20230909081434.2324940-1-liujian56@huawei.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Max Schulze reports crashes with brcmfmac. The reason seems
to be a race between userspace removing the CQM config and
the driver calling cfg80211_cqm_rssi_notify(), where if the
data is freed while cfg80211_cqm_rssi_notify() runs it will
crash since it assumes wdev->cqm_config is set. This can't
be fixed with a simple non-NULL check since there's nothing
we can do for locking easily, so use RCU instead to protect
the pointer, but that requires pulling the updates out into
an asynchronous worker so they can sleep and call back into
the driver.
Since we need to change the free anyway, also change it to
go back to the old settings if changing the settings fails.
Reported-and-tested-by: Max Schulze <max.schulze@online.de>
Closes: https://lore.kernel.org/r/ac96309a-8d8d-4435-36e6-6d152eb31876@online.de
Fixes: 4a4b8169501b ("cfg80211: Accept multiple RSSI thresholds for CQM")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Use the correct link ID and per-link puncturing data instead
of hardcoding link ID 0 and using deflink puncturing.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230827135854.0b6a211c8e75.I5724d32bb2dae440888efbc47334d8c115db9d50@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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When user space transmits a management frame it is expected to use
the MLD addresses if the connection is an MLD one. Thus, in case
the management Tx is using the MLD address and no channel is configured
off-channel should not be used (as one of the active links would be used).
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230827135854.73c8efce252f.Ie4b0a842debb24ef25c5e6cb2ad69b9f46bc4b2a@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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The code that sets up the assoc link will currently take the BSS
element data from the beacon only. This is correct for some of
the data, notably the timing and the "have_beacon", but all the
data about MBSSID and EHT really doesn't need to be taken from
there, and if the EHT puncturing is misconfigured on the AP but
we didn't receive a beacon yet, this causes us to connect but
immediately disconnect upon receiving the first beacon, rather
than connecting without EHT in the first place.
Change the code to take MBSSID and EHT data also from the probe
response, for a better picture of what the BSS capabilities are
and to avoid that EHT puncturing problem.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230827135854.3c7e52d49482.Iba6b672f6dc74b45bba26bc497e953e27da43ef9@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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To ease debugging, mostly in cases that authentication fails.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230827135854.9c08605e2691.I0032e9d6e01325862189e4a20b02ddbe8f2f5e75@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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During my refactoring I wanted to get rid of the switch,
but replaced it with the wrong calculation. Fix that.
Fixes: 175ad2ec89fe ("wifi: mac80211: limit A-MSDU subframes for client too")
Reported-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230827135854.51bf1b8b0adb.Iffbd337fdad2b86ae12f5a39c69fb82b517f7486@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Clean up the kernel-doc comments in reg.h.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230827135854.36d7b52da0f5.I85fbfb3095613f4a0512493cbbdda881dc31be2c@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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There are various kernel-doc issues here, fix them.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230827135854.7ce9761f9ebb.I0f44e76c518f72135cc855c809bfa7a5e977b894@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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This just causes kernel-doc to complain at this spot, but
isn't actually needed anyway, so remove it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230827135854.33a5591dfdeb.If4e7e1a1cb4c04f0afd83db7401c780404dca699@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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The sta info needs to be inserted before its links may be modified.
Add a few warnings to prevent accidental usage of these functions.
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230827135854.eeb43b3cc9e3.I5fd8236f70e64bf6268f33c883f7a878d963b83e@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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This function will be used by the kunit tests within cfg80211. As it
is generally useful, move it from mac80211 to cfg80211.
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230827135854.5af9391659f5.Ie534ed6591ba02be8572d4d7242394f29e3af04b@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Add a unit test for the parsing of a fragmented sta profile
sub-element inside a fragmented multi-link element.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230827135854.333bc75df13f.I0ddfeb6a88a4d89e7c7850e8ef45a4b19b5a061a@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Add a couple of tests for element defragmentation, to
see that the function works correctly.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230827135854.e2a5cead1816.I09f0edc19d162b54ee330991c728c1e9aa42ebf6@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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If a fragment is the last element, it's erroneously not
accepted. Fix that.
Fixes: f837a653a097 ("wifi: cfg80211: add element defragmentation helper")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230827135854.adca9fbd3317.I6b2df45eb71513f3e48efd196ae3cddec362dc1c@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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This allows to finalize the CSA per link.
In case the switch didn't work, tear down the MLD connection.
Also pass the ieee80211_bss_conf to post_channel_switch to let the
driver know which link completed the switch.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230828130311.3d3eacc88436.Ic2d14e2285aa1646216a56806cfd4a8d0054437c@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Many regulatories can have HE/EHT Operation as not permitted. In such
cases, AP should not be allowed to start if it is using a channel
having the no operation flag set. However, currently there is no such
check in place.
Fix this issue by validating such IEs sent during start AP against the
channel flags.
Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com>
Reviewed-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20230905064857.1503-1-quic_adisi@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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When connect to MLO AP with more than one link, and the assoc response of
AP is not success, then cfg80211_unhold_bss() is not called for all the
links' cfg80211_bss except the primary link which means the link used by
the latest successful association request. Thus the hold value of the
cfg80211_bss is not reset to 0 after the assoc fail, and then the
__cfg80211_unlink_bss() will not be called for the cfg80211_bss by
__cfg80211_bss_expire().
Then the AP always looks exist even the AP is shutdown or reconfigured
to another type, then it will lead error while connecting it again.
The detail info are as below.
When connect with muti-links AP, cfg80211_hold_bss() is called by
cfg80211_mlme_assoc() for each cfg80211_bss of all the links. When
assoc response from AP is not success(such as status_code==1), the
ieee80211_link_data of non-primary link(sdata->link[link_id]) is NULL
because ieee80211_assoc_success()->ieee80211_vif_update_links() is
not called for the links.
Then struct cfg80211_rx_assoc_resp resp in cfg80211_rx_assoc_resp() and
struct cfg80211_connect_resp_params cr in __cfg80211_connect_result()
will only have the data of the primary link, and finally function
cfg80211_connect_result_release_bsses() only call cfg80211_unhold_bss()
for the primary link. Then cfg80211_bss of the other links will never free
because its hold is always > 0 now.
Hence assign value for the bss and status from assoc_data since it is
valid for this case. Also assign value of addr from assoc_data when the
link is NULL because the addrs of assoc_data and link both represent the
local link addr and they are same value for success connection.
Fixes: 81151ce462e5 ("wifi: mac80211: support MLO authentication/association with one link")
Signed-off-by: Wen Gong <quic_wgong@quicinc.com>
Link: https://lore.kernel.org/r/20230825070055.28164-1-quic_wgong@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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In mesh_fast_tx_flush_addr() we already hold the lock, so
don't need additional hashtable RCU protection. Use the
rhashtable_lookup_fast() variant to avoid RCU protection
warnings.
Fixes: d5edb9ae8d56 ("wifi: mac80211: mesh fast xmit support")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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There were are a number of cases in mac80211 and iwlwifi (at
least) that used the sband->iftype_data pointer directly,
instead of using the accessors to find the right array entry
to use.
Make sparse warn when such a thing is done.
To not have a lot of casts, add two helper functions/macros
- ieee80211_set_sband_iftype_data()
- for_each_sband_iftype_data()
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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As previously reported by Alexander, whose commit 69403bad97aa
("wifi: mac80211: sdata can be NULL during AMPDU start") I'm
reverting as part of this commit, there's a race between station
destruction and aggregation setup, where the aggregation setup
can happen while the station is being removed and queue the work
after ieee80211_sta_tear_down_BA_sessions() has already run in
__sta_info_destroy_part1(), and thus the worker will run with a
now freed station. In his case, this manifested in a NULL sdata
pointer, but really there's no guarantee whatsoever.
The real issue seems to be that it's possible at all to have a
situation where this occurs - we want to stop the BA sessions
when doing _part1, but we cannot be sure, and WLAN_STA_BLOCK_BA
isn't necessarily effective since we don't know that the setup
isn't concurrently running and already got past the check.
Simply call ieee80211_sta_tear_down_BA_sessions() again in the
second part of station destruction, since at that point really
nothing else can hold a reference to the station any more.
Also revert the sdata checks since those are just misleading at
this point.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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We currently call ieee80211_txq_teardown_flows() as part
of ieee80211_remove_interfaces(), but that's not really
right in case of HW registration failures, specifically
rate control. Call it separately to fix that issue.
Reported-by: Zhengchao Shao <shaozhengchao@huawei.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Since we're now protecting everything with the wiphy mutex
(and were really using it for almost everything before),
there's no longer any real reason to have a separate wdev
mutex. It may feel better, but really has no value.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Drivers might plausibly want to have this, but also the
locking assertions will need it later.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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We now hold the wiphy mutex everywhere that we use or
needed the iflist_mtx, so we don't need this mutex any
more in mac80211. However, drivers may also iterate,
and in some cases (e.g. mt76) do so from high-priority
contexts. Thus, keep the mutex around but remove its
usage in mac80211 apart from those driver-visible parts
that are still needed.
Most of this change was done automatically with spatch,
with the parts that are still needed as described above
reverted manually.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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We now hold the wiphy mutex everywhere that we use or
needed the local->mtx, so we don't need this mutex any
more. Remove it.
Most of this change was done automatically with spatch.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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We now hold the wiphy mutex everywhere that we use or
needed the A-MPDU locking, so we don't need this mutex
any more. Remove it.
Most of this change was done automatically with spatch.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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We now hold the wiphy mutex everywhere that we use or
needed the chanctx_mtx, so we don't need this mutex any
more. Remove it.
Most of this change was done automatically with spatch.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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