* the applicable eth_hw_addr_set() and const hw_addr changes
* various code cleanups/refactorings
* stack usage reductions across the wireless stack
* some unstructured find_ie() -> structured find_element()
changes
* a few more pieces of multi-BSSID support
* some 6 GHz regulatory support
* 6 GHz support in hwsim, for testing userspace code
* Light Communications (LC, 802.11bb) early band definitions
to be able to add a first driver soon
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Merge tag 'mac80211-next-for-net-next-2021-10-21' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Johannes Berg says:
====================
Quite a few changes:
* the applicable eth_hw_addr_set() and const hw_addr changes
* various code cleanups/refactorings
* stack usage reductions across the wireless stack
* some unstructured find_ie() -> structured find_element()
changes
* a few more pieces of multi-BSSID support
* some 6 GHz regulatory support
* 6 GHz support in hwsim, for testing userspace code
* Light Communications (LC, 802.11bb) early band definitions
to be able to add a first driver soon
* tag 'mac80211-next-for-net-next-2021-10-21' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next: (35 commits)
cfg80211: fix kernel-doc for MBSSID EMA
mac80211: Prevent AP probing during suspend
nl80211: Add LC placeholder band definition to nl80211_band
...
====================
Link: https://lore.kernel.org/r/20211021154953.134849-1-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Commit 406f42fa0d ("net-next: When a bond have a massive amount
of VLANs...") introduced a rbtree for faster Ethernet address look
up. To maintain netdev->dev_addr in this tree we need to make all
the writes to it got through appropriate helpers.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/r/20211018235021.1279697-12-kuba@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Thomas explained in https://lore.kernel.org/r/87mtoeb4hb.ffs@tglx
that our handling of the hrtimer here is wrong: If the timer fires
late (e.g. due to vCPU scheduling, as reported by Dmitry/syzbot)
then it tries to actually rearm the timer at the next deadline,
which might be in the past already:
1 2 3 N N+1
| | | ... | |
^ intended to fire here (1)
^ next deadline here (2)
^ actually fired here
The next time it fires, it's later, but will still try to schedule
for the next deadline (now 3), etc. until it catches up with N,
but that might take a long time, causing stalls etc.
Now, all of this is simulation, so we just have to fix it, but
note that the behaviour is wrong even per spec, since there's no
value then in sending all those beacons unaligned - they should be
aligned to the TBTT (1, 2, 3, ... in the picture), and if we're a
bit (or a lot) late, then just resume at that point.
Therefore, change the code to use hrtimer_forward_now() which will
ensure that the next firing of the timer would be at N+1 (in the
picture), i.e. the next interval point after the current time.
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Reported-by: syzbot+0e964fad69a9c462bc1e@syzkaller.appspotmail.com
Fixes: 01e59e467e ("mac80211_hwsim: hrtimer beacon")
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20210915112936.544f383472eb.I3f9712009027aa09244b65399bf18bf482a8c4f1@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Syzbot reports that we may be able to get into a situation where
mac80211 has pending ACK frames on shutdown with hwsim. It appears
that the reason for this is that syzbot uses the wmediumd hooks to
intercept/injection frames, and may shut down hwsim, removing the
radio(s), while frames are pending in the air simulation.
Clean out the pending queue when the interface is stopped, after
this the frames can't be reported back to mac80211 properly anyway.
Reported-by: syzbot+a063bbf0b15737362592@syzkaller.appspotmail.com
Link: https://lore.kernel.org/r/20210517170429.b0f85ab0eda1.Ie42a6ec6b940c971f3441286aeaaae2fe368e29a@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
spinlock can be initialized automatically with DEFINE_SPINLOCK()
rather than explicitly calling spin_lock_init().
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Guobin Huang <huangguobin4@huawei.com>
Link: https://lore.kernel.org/r/1616839160-6654-1-git-send-email-huangguobin4@huawei.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Bulk of the genetlink users can use smaller ops, move them.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Advertise S1G Capabilities and channels to mac80211.
Requires a few fixups to account for missing
sband->bitrates, and a custom regulatory db to actually
enable the S1G channels.
Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
Link: https://lore.kernel.org/r/20200922022818.15855-18-thomas@adapt-ip.com
[small code cleanup]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
S1G beacons are different from normal management beacons, so write
the timestamp to the correct location there.
Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
Link: https://lore.kernel.org/r/20200922022818.15855-17-thomas@adapt-ip.com
[rewrite commit message that was not useful after patch reordering]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We want to reuse the functions and structs for other counters such as BSS
color change. Rename them to more generic names.
Signed-off-by: John Crispin <john@phrozen.org>
Link: https://lore.kernel.org/r/20200811080107.3615705-2-john@phrozen.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* hwsim improvements from Jouni and myself, to be able to
test more scenarios easily
* some more HE (802.11ax) support
* some initial S1G (sub 1 GHz) work for fractional MHz channels
* some (action) frame registration updates to help DPP support
* along with other various improvements/fixes
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Merge tag 'mac80211-next-for-net-next-2020-04-25' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Johannes Berg says:
====================
One batch of changes, containing:
* hwsim improvements from Jouni and myself, to be able to
test more scenarios easily
* some more HE (802.11ax) support
* some initial S1G (sub 1 GHz) work for fractional MHz channels
* some (action) frame registration updates to help DPP support
* along with other various improvements/fixes
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
mac80211 takes care of rate control for the Beacon frames, so all
mac80211_hwsim needs to do here is advertise support for this.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Link: https://lore.kernel.org/r/20200425155713.25687-5-jouni@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
While mac80211_hwsim does not need this to configure RX filters, it is
convenient to have this enabled for testing purposes.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Link: https://lore.kernel.org/r/20200425155713.25687-3-jouni@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This is actually true because there's no functional beacon distribution
and lets us get active scanning working - without it, mac80211 doesn't
respond to probe requests.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200326150855.554d1199b309.Id86fd36e3d88d2a75d6e0c6618fd93ce8fe84065@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Currently, wmediumd requires each used MAC address to be configured
as a station in the virtual air, but that doesn't make sense as any
station could have multiple MAC addresses, and even have randomized
ones in scanning, etc.
Add some code here to tell wmediumd of used MAC addresses, binding
them to the hardware address. Combined with a wmediumd patch that
makes it track the addresses this allows configuring just the radio
address (42:00:00:00:nn:00 unless the radio was manually created)
in wmediumd as a station, and all addresses that the station uses
are added/removed dynamically.
Tested with random scan, which without this and the corresponding
wmediumd change doesn't get anything through as the sender doesn't
exist as far as wmediumd is concerned (it's random).
Link: https://lore.kernel.org/r/20200323162358.b397b1a1acef.Ice0536e34e5d96c51f97c374ea8af9551347c7e8@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
syzbot reports a warning:
precision 33020 too large
WARNING: CPU: 0 PID: 9618 at lib/vsprintf.c:2471 set_precision+0x150/0x180 lib/vsprintf.c:2471
vsnprintf+0xa7b/0x19a0 lib/vsprintf.c:2547
kvasprintf+0xb2/0x170 lib/kasprintf.c:22
kasprintf+0xbb/0xf0 lib/kasprintf.c:59
hwsim_del_radio_nl+0x63a/0x7e0 drivers/net/wireless/mac80211_hwsim.c:3625
genl_family_rcv_msg_doit net/netlink/genetlink.c:672 [inline]
...
entry_SYSCALL_64_after_hwframe+0x49/0xbe
Thus it seems that kasprintf() with "%.*s" format can not be used for
duplicating a string with arbitrary length. Replace it with kstrndup().
Note that later this string is limited to NL80211_WIPHY_NAME_MAXLEN == 64,
but the code is simpler this way.
Reported-by: syzbot+6693adf1698864d21734@syzkaller.appspotmail.com
Reported-by: syzbot+a4aee3f42d7584d76761@syzkaller.appspotmail.com
Cc: stable@kernel.org
Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
Link: https://lore.kernel.org/r/20200410123257.14559-1-tuomas.tynkkynen@iki.fi
[johannes: add note about length limit]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This allows communication with external entities.
It also required fixing up the netlink policy, since NLA_UNSPEC
attributes are no longer accepted.
Signed-off-by: Erel Geron <erelx.geron@intel.com>
[port to backports, inline the ID, use 29 as the ID as requested,
drop != NULL checks, reduce ifdefs]
Link: https://lore.kernel.org/r/20200305143212.c6e4c87d225b.I7ce60bf143e863dcdf0fb8040aab7168ba549b99@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Now that there is support for BIGTK configuration and AP/STA
functionality for using BIP with Beacon frames, indicate support for the
Beacon protection functionality.
Johannes: move this to hwsim, since it's not clear that all drivers
using mac80211 will do this correctly - lots of them modify the
beacon before transmission e.g. to update the TIM element, and that
would obviously break the signature.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Link: https://lore.kernel.org/r/20200222132548.20835-7-jouni@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Advertise the correct flags to mac80211 to indicate PS
trigger frames and frame buffering should be handled by
mac80211. This means mac80211_hwsim will now also have to
release buffered multicast frames after a (DTIM) beacon.
Leave STA power save disabled by default since it causes
several p2p, scanning, and rrm hostap tests to fail.
Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
Link: https://lore.kernel.org/r/20200114055940.18502-2-thomas@adapt-ip.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This is too low, at least ETSI regulatory domain would
allow 36 dBm on 5 GHz in (some? most?) cases. But there's
no reason hwsim should have a limit at all, so remove it.
See also
https://lore.kernel.org/r/20191108152013.13418-1-ramonreisfontes@gmail.com
Change-Id: I6edf81d2e82bc8ce7baa40bfc0f210b7b56ef275
Reported-by: Ramon Fontes <ramonreisfontes@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
It is more clear to use DEFINE_DEBUGFS_ATTRIBUTE to define debugfs file
operation rather than DEFINE_SIMPLE_ATTRIBUTE.
It is detected with the help of coccinelle.
Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Link: https://lore.kernel.org/r/1572404462-45462-1-git-send-email-zhongjiang@huawei.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* minstrel improvements from Felix
* a TX aggregation simplification
* some additional capabilities for hwsim
* minor cleanups & docs updates
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Merge tag 'mac80211-next-for-net-next-2019-10-11' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Johannes Berg says:
====================
A few more small things, nothing really stands out:
* minstrel improvements from Felix
* a TX aggregation simplification
* some additional capabilities for hwsim
* minor cleanups & docs updates
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
If dev_alloc_name fails, hwsim_mon's memory allocated in alloc_netdev
needs to be freed.
Change goto command in dev_alloc_name failure to out_free_mon in
order to perform free_netdev.
Signed-off-by: Michael Vassernis <michael.vassernis@tandemg.com>
Link: https://lore.kernel.org/r/20191003073049.3760-1-michael.vassernis@tandemg.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There really is no need to make drivers call the
ieee80211_start_tx_ba_cb_irqsafe() function and then
schedule the worker if all we want is to set a bit.
Add a new return value (that was previously considered
invalid) to indicate that the driver is immediately
ready for the session, and make drivers use it. The
only drivers that remain different are the Intel ones
as they need to negotiate more with the firmware.
Link: https://lore.kernel.org/r/1570007543-I152912660131cbab2e5d80b4218238c20f8a06e5@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
commit 174e23810c
("sk_buff: drop all skb extensions on free and skb scrubbing") made napi
recycle always drop skb extensions. The additional skb_ext_del() that is
performed via nf_reset on napi skb recycle is not needed anymore.
Most nf_reset() calls in the stack are there so queued skb won't block
'rmmod nf_conntrack' indefinitely.
This removes the skb_ext_del from nf_reset, and renames it to a more
fitting nf_reset_ct().
In a few selected places, add a call to skb_ext_reset to make sure that
no active extensions remain.
I am submitting this for "net", because we're still early in the release
cycle. The patch applies to net-next too, but I think the rename causes
needless divergence between those trees.
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Some features of 802.11ax without central organizing (AP) STA can also be
used in mesh mode. hwsim can be used to assist initial development of these
features without having access to HW.
Signed-off-by: Sven Eckelmann <seckelmann@datto.com>
Link: https://lore.kernel.org/r/20190813063657.7544-1-sven@narfation.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In hwsim_dump_radio_nl(), when genlmsg_put() on line 3617 fails, hdr is
assigned to NULL. Then hdr is used on lines 3622 and 3623:
genl_dump_check_consistent(cb, hdr);
genlmsg_end(skb, hdr);
Thus, possible null-pointer dereferences may occur.
To fix these bugs, hdr is used here when it is not NULL.
This bug is found by a static analysis tool STCheck written by us.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Link: https://lore.kernel.org/r/20190729082332.28895-1-baijiaju1990@gmail.com
[put braces on all branches]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Prepare hwsim Extended Key ID support for a mac80211 API change.
The mac80211 flag IEEE80211_HW_EXT_KEY_ID_NATIVE is being replaced by
NL80211_EXT_FEATURE_EXT_KEY_ID which only must be set by drivers when
they support HW crypto.
This reverts commit cfe7007a9b ("mac80211_hwsim: Extended Key ID support").
Signed-off-by: Alexander Wetzel <alexander@wetzel-home.de>
Link: https://lore.kernel.org/r/20190629195015.19680-1-alexander@wetzel-home.de
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This low level driver can find it useful to get the vif
when a remain on channel session is cancelled.
iwlwifi will need this soon.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Link: https://lore.kernel.org/r/20190723180001.5828-1-emmanuel.grumbach@intel.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This function name should be 'mac80211_hwsim_he_capab()' (s wand w
switched) to be consistent with the rest of the file.
Fix and use it.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/20190725191328.18010-1-christophe.jaillet@wanadoo.fr
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Pull networking updates from David Miller:
"Some highlights from this development cycle:
1) Big refactoring of ipv6 route and neigh handling to support
nexthop objects configurable as units from userspace. From David
Ahern.
2) Convert explored_states in BPF verifier into a hash table,
significantly decreased state held for programs with bpf2bpf
calls, from Alexei Starovoitov.
3) Implement bpf_send_signal() helper, from Yonghong Song.
4) Various classifier enhancements to mvpp2 driver, from Maxime
Chevallier.
5) Add aRFS support to hns3 driver, from Jian Shen.
6) Fix use after free in inet frags by allocating fqdirs dynamically
and reworking how rhashtable dismantle occurs, from Eric Dumazet.
7) Add act_ctinfo packet classifier action, from Kevin
Darbyshire-Bryant.
8) Add TFO key backup infrastructure, from Jason Baron.
9) Remove several old and unused ISDN drivers, from Arnd Bergmann.
10) Add devlink notifications for flash update status to mlxsw driver,
from Jiri Pirko.
11) Lots of kTLS offload infrastructure fixes, from Jakub Kicinski.
12) Add support for mv88e6250 DSA chips, from Rasmus Villemoes.
13) Various enhancements to ipv6 flow label handling, from Eric
Dumazet and Willem de Bruijn.
14) Support TLS offload in nfp driver, from Jakub Kicinski, Dirk van
der Merwe, and others.
15) Various improvements to axienet driver including converting it to
phylink, from Robert Hancock.
16) Add PTP support to sja1105 DSA driver, from Vladimir Oltean.
17) Add mqprio qdisc offload support to dpaa2-eth, from Ioana
Radulescu.
18) Add devlink health reporting to mlx5, from Moshe Shemesh.
19) Convert stmmac over to phylink, from Jose Abreu.
20) Add PTP PHC (Physical Hardware Clock) support to mlxsw, from
Shalom Toledo.
21) Add nftables SYNPROXY support, from Fernando Fernandez Mancera.
22) Convert tcp_fastopen over to use SipHash, from Ard Biesheuvel.
23) Track spill/fill of constants in BPF verifier, from Alexei
Starovoitov.
24) Support bounded loops in BPF, from Alexei Starovoitov.
25) Various page_pool API fixes and improvements, from Jesper Dangaard
Brouer.
26) Just like ipv4, support ref-countless ipv6 route handling. From
Wei Wang.
27) Support VLAN offloading in aquantia driver, from Igor Russkikh.
28) Add AF_XDP zero-copy support to mlx5, from Maxim Mikityanskiy.
29) Add flower GRE encap/decap support to nfp driver, from Pieter
Jansen van Vuuren.
30) Protect against stack overflow when using act_mirred, from John
Hurley.
31) Allow devmap map lookups from eBPF, from Toke Høiland-Jørgensen.
32) Use page_pool API in netsec driver, Ilias Apalodimas.
33) Add Google gve network driver, from Catherine Sullivan.
34) More indirect call avoidance, from Paolo Abeni.
35) Add kTLS TX HW offload support to mlx5, from Tariq Toukan.
36) Add XDP_REDIRECT support to bnxt_en, from Andy Gospodarek.
37) Add MPLS manipulation actions to TC, from John Hurley.
38) Add sending a packet to connection tracking from TC actions, and
then allow flower classifier matching on conntrack state. From
Paul Blakey.
39) Netfilter hw offload support, from Pablo Neira Ayuso"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2080 commits)
net/mlx5e: Return in default case statement in tx_post_resync_params
mlx5: Return -EINVAL when WARN_ON_ONCE triggers in mlx5e_tls_resync().
net: dsa: add support for BRIDGE_MROUTER attribute
pkt_sched: Include const.h
net: netsec: remove static declaration for netsec_set_tx_de()
net: netsec: remove superfluous if statement
netfilter: nf_tables: add hardware offload support
net: flow_offload: rename tc_cls_flower_offload to flow_cls_offload
net: flow_offload: add flow_block_cb_is_busy() and use it
net: sched: remove tcf block API
drivers: net: use flow block API
net: sched: use flow block API
net: flow_offload: add flow_block_cb_{priv, incref, decref}()
net: flow_offload: add list handling functions
net: flow_offload: add flow_block_cb_alloc() and flow_block_cb_free()
net: flow_offload: rename TCF_BLOCK_BINDER_TYPE_* to FLOW_BLOCK_BINDER_TYPE_*
net: flow_offload: rename TC_BLOCK_{UN}BIND to FLOW_BLOCK_{UN}BIND
net: flow_offload: add flow_block_cb_setup_simple()
net: hisilicon: Add an tx_desc to adapt HI13X1_GMAC
net: hisilicon: Add an rx_desc to adapt HI13X1_GMAC
...
This makes boot uniformly boottime and tai uniformly clocktai, to
address the remaining oversights.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lkml.kernel.org/r/20190621203249.3909-2-Jason@zx2c4.com
Colin Ian King