Add the ability to configure if an AP (and associated VLANs) will
do multicast-to-unicast conversion for ARP, IPv4 and IPv6 frames
(possibly within 802.1Q). If enabled, such frames are to be sent
to each station separately, with the DA replaced by their own MAC
address rather than the group address.
Note that this may break certain expectations of the receiver,
such as the ability to drop unicast IP packets received within
multicast L2 frames, or the ability to not send ICMP destination
unreachable messages for packets received in L2 multicast (which
is required, but the receiver can't tell the difference if this
new option is enabled.)
This also doesn't implement the 802.11 DMS (directed multicast
service).
Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
[fix disabling, add better documentation & commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The new nl80211 attributes can be used to provide KEK and nonces to
allow the driver to encrypt and decrypt FILS (Re)Association
Request/Response frames in station mode.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This defines authentication algorithms for FILS (IEEE 802.11ai).
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This adds defines and nl80211 extensions to allow FILS Authentication to
be implemented similarly to SAE. FILS does not need the special rules
for the Authentication transaction number and Status code fields, but it
does need to add non-IE fields. The previously used
NL80211_ATTR_SAE_DATA can be reused for this to avoid having to
duplicate that implementation. Rename that attribute to more generic
NL80211_ATTR_AUTH_DATA (with backwards compatibility define for
NL80211_SAE_DATA).
Also document the special rules related to the Authentication
transaction number and Status code fiels.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When we split the wiphy dump because it got too large, I added a
comment and asked that all new command advertising be done only
for userspace clients capable of receiving split data, in order
to not break older ones (which can't use the new commands anyway)
This mostly worked, and we haven't added many new commands, but
I occasionally get patches that modify the wrong place.
Make this easier to detect and understand by splitting out the
old commands to a separate function that makes it more clear it
should never be modified again.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Remove the pointless checking against interface combinations in
the initial basic beacon interval validation, that currently isn't
taking into account radar detection or channels properly. Instead,
just validate the basic range there, and then delay real checking
to the interface combination validation that drivers must do.
This means that drivers wanting to use the beacon_int_min_gcd will
now have to pass the new_beacon_int when validating the AP/mesh
start.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This can't really be supported right now, because the IBSS
interface may change its beacon interval at any time due to
joining another network; thus, there's already "support"
for different beacon intervals here, implicitly.
Until we figure out how we should handle this case (continue
to allow it to arbitrarily join? Join only if compatible?)
disallow advertising that different beacon intervals are
supported if IBSS is allowed.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This is needed for beacon interval validation; if we don't
store it, then new interfaces added won't validate that the
beacon interval is the same as existing ones. Fix this.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We shouldn't abort the iteration with an error when one of the
potential combinations can't accomodate the beacon interval
request, we should just skip that particular combination. Fix
the code to do so.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add a helper using wdev to check if interface is running. This
deals with both non-netdev and netdev interfaces. In struct
wireless_dev replace 'p2p_started' and 'nan_started' by
'is_running' as those are mutually exclusive anyway, and unify
all the code to use wdev_running().
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The old WDS 4-addr frame support is very limited, e.g.
* no encryption is possible on such links
* it cannot support rate/HT/VHT negotiation
* management APIs are very restricted
These make the WDS legacy mode useless in practice.
All of these are resolved by the 4-addr AP/client support,
so there's also no reason to improve WDS in the future.
Therefore, add a Kconfig option to disable legacy WDS.
This gives people an "emergency valve" while they migrate
to the better-supported 4-addr AP/client option; we plan
to remove it (and the associated cfg80211/mac80211 code,
which is the ultimate goal) in the future.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Allow vendor commands that require WIPHY_VENDOR_CMD_NEED_RUNNING flag
to be sent to NAN interface.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
On a disconnect request from userspace, cfg80211 currently calls
called rdev_disconnect() only in case that 'current_bss' was set,
i.e. connection had been established.
Change this to allow the userspace call to succeed and call the
driver's disconnect() method also while the connection attempt is
in progress, to be able to abort attempts.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
[change commit subject/message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
'limits' is malloced in cfg80211_iter_combinations() and should be freed
before leaving from the error handling cases, otherwise it will cause
memory leak.
Fixes: 0c317a02ca ("cfg80211: support virtual interfaces with different beacon intervals")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
To avoid unused variable warnings when CONFIG_PM isn't set,
add the appropriate ifdef to the policies that are only used
for WoWLAN, which can only be invoked when CONFIG_PM is set.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This was clearly intended to be used in the attribute parsing,
so do that instead of leaving the attribute policy unused.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit provides a mechanism for the host drivers to advertise the
support for different beacon intervals among the respective interface
combinations in a group, through NL80211_IFACE_COMB_BI_MIN_GCD (u32).
This value will be compared against GCD of all beaconing interfaces of
matching combinations.
If the driver doesn't advertise this value, the old behaviour where
all beacon intervals must be identical is retained.
If it is specified, then any beacon interval for an interface in the
interface combination as well as the GCD of all active beacon intervals
in the combination must be greater or equal to this value.
Signed-off-by: Purushottam Kushwaha <pkushwah@qti.qualcomm.com>
[change commit message, some variable names, small other things]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Move the growing parameter list to a structure for the interface
combination check and iteration functions in cfg80211 and mac80211
to make the code easier to understand.
Signed-off-by: Purushottam Kushwaha <pkushwah@qti.qualcomm.com>
[edit commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Resolve the merge conflict between Felix's/my and Toke's patches
coming into the tree through net and mac80211-next respectively.
Most of Felix's changes go away due to Toke's new infrastructure
work, my patch changes to "goto begin" (the label wasn't there
before) instead of returning NULL so flow control towards drivers
is preserved better.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Provide a function that reports NAN DE function termination. The function
may be terminated due to one of the following reasons: user request,
ttl expiration or failure.
If the NAN instance is tied to the owner, the notification will be
sent to the socket that started the NAN interface only
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Provide a function the driver can call to report a match.
This will send the event to the user space.
If the NAN instance is tied to the owner, the notifications will be
sent to the socket that started the NAN interface only.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Some NAN configuration paramaters may change during the operation of
the NAN device. For example, a user may want to update master preference
value when the device gets plugged/unplugged to the power.
Add API that allows to do so.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
A NAN function can be either publish, subscribe or follow
up. Make all the necessary verifications and just pass the
request to the driver.
Allow the user space application that starts NAN to
forbid any other socket to add or remove functions.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Ayala Beker <ayala.beker@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This allows user space to start/stop NAN interface.
A NAN interface is like P2P device in a few aspects: it
doesn't have a netdev associated to it.
Add the new interface type and prevent operations that
can't be executed on NAN interface like scan.
Define several attributes that may be configured by user space
when starting NAN functionality (master preference and dual
band operation)
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add support for drivers that implement static WEP internally, i.e.
expose connection keys to the driver in connect flow and don't
upload the keys after the connection.
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Jouni reported that during (repeated) wext_pmf test runs (from the
wpa_supplicant hwsim test suite) the kernel crashes. The reason is
that after the key is set, the wext code still unnecessarily stores
it into the key cache. Despite smatch pointing out an overflow, I
failed to identify the possibility for this in the code and missed
it during development of the earlier patch series.
In order to fix this, simply check that we never store anything but
WEP keys into the cache, adding a comment as to why that's enough.
Also, since the cache is still allocated early even if it won't be
used in many cases, add a comment explaining why - otherwise we'd
have to roll back key settings to the driver in case of allocation
failures, which is far more difficult.
Fixes: 89b706fb28 ("cfg80211: reduce connect key caching struct size")
Reported-by: Jouni Malinen <j@w1.fi>
Bisected-by: Jouni Malinen <j@w1.fi>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The previous commit added support for specifying the beacon rate
for AP mode. Add features checks to this, and extend it to also
support the rate configuration for mesh networks. For IBSS it's
not as simple due to joining etc., so that's not yet supported.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This allows an option to configure a single beacon tx rate for an AP.
Signed-off-by: Purushottam Kushwaha <pkushwah@qti.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* MU-MIMO sniffer support in mac80211
* a create_singlethread_workqueue() cleanup
* interface dump filtering that was documented but not implemented
* support for the new radiotap timestamp field
* send delBA in two unexpected conditions (as required by the spec)
* connect keys cleanups - allow only WEP with index 0-3
* per-station aggregation limit to work around broken APs
* debugfs improvement for the integrated codel algorithm
and various other small improvements and cleanups.
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Merge tag 'mac80211-next-for-davem-2016-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Johannes Berg says:
====================
This time we have various things - all across the board:
* MU-MIMO sniffer support in mac80211
* a create_singlethread_workqueue() cleanup
* interface dump filtering that was documented but not implemented
* support for the new radiotap timestamp field
* send delBA in two unexpected conditions (as required by the spec)
* connect keys cleanups - allow only WEP with index 0-3
* per-station aggregation limit to work around broken APs
* debugfs improvement for the integrated codel algorithm
and various other small improvements and cleanups.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
There are a few places where an IE that matches not only the EID, but
also other bytes inside the element, needs to be found. To simplify
that and reduce the amount of similar code, implement a new helper
function to match the EID and an extra array of bytes.
Additionally, simplify cfg80211_find_vendor_ie() by using the new
match function.
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
For an array, there's no need to use &array, so just use the
plain wiphy->addresses[i].addr here to silence smatch.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
A few instances were found where we didn't check them, add the
missing checks even though they'll probably never trigger as
the message should be large enough here.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If the message got full during nla_nest_start(), it can return
NULL. None of the cases here seem like that can really happen,
but check the return value nonetheless.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There's no point in allowing connect keys when one of them
isn't also configured as the TX key, it would just confuse
drivers and probably cause them to pick something for TX.
Disallow this confusing and erroneous configuration.
As wpa_supplicant will always send NL80211_ATTR_KEYS, even
when there are no keys inside, allow that and treat it as
though the attribute isn't present at all.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
After the previous patches, connect keys can only (correctly)
be used for storing static WEP keys. Therefore, remove all the
data for dealing with key index 4/5 and reduce the size of the
key material to the maximum for WEP keys.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Don't accept it if a key_idx < 0 snuck through, reject WEP keys with
key index 4 and 5 (which are used for IGTKs) and don't allow IGTKs
with key indices other than 4 and 5. This makes the key data match
expectations better.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When not connected, anything but WEP keys shouldn't be allowed to be
configured for later - only static WEP keys make sense at this point.
Change wext to reject anything else just like nl80211 does.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This was already documented that way in nl80211.h, but the
parsing code still accepted other key types. Change it to
really only accept WEP keys as documented.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Only key index 0-3 should be accepted, 4/5 are for IGTKs and
cannot be used as connect keys. Fix the range checking to not
allow such erroneous configurations.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Key index 4 can only be used for an IGTK, so the range checks
for shared key authentication should treat 4 as an error, fix
that in the code.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Due to an apparent copy/paste bug, the number of counters for the
beacon configuration were checked twice, instead of checking the
number of probe response counters. Fix this to check the number of
probe response counters before parsing those.
Cc: stable@vger.kernel.org
Fixes: 9a774c78e2 ("cfg80211: Support multiple CSA counters")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Conflicts:
drivers/net/ethernet/mediatek/mtk_eth_soc.c
drivers/net/ethernet/qlogic/qed/qed_dcbx.c
drivers/net/phy/Kconfig
All conflicts were cases of overlapping commits.
Signed-off-by: David S. Miller <davem@davemloft.net>
The workqueue "cfg80211_wq" is involved in cleanup, scan and event related
works. It queues multiple work items &rdev->event_work,
&rdev->dfs_update_channels_wk,
&wiphy_to_rdev(request->wiphy)->scan_done_wk,
&wiphy_to_rdev(wiphy)->sched_scan_results_wk, which require strict
execution ordering.
Hence, an ordered dedicated workqueue has been used.
Since it's a wireless driver, WQ_MEM_RECLAIM has been set to ensure
forward progress under memory pressure.
Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This patch allows GET_INTERFACE dumps to be filtered based on
NL80211_ATTR_WIPHY or NL80211_ATTR_WDEV. The documentation for
GET_INTERFACE mentions that this is possible:
"Request an interface's configuration; either a dump request on
a %NL80211_ATTR_WIPHY or ..."
However, this behavior has not been implemented until now.
Johannes: rewrite most of the patch:
* use nl80211_dump_wiphy_parse() to also allow passing an interface
to be able to dump its siblings
* fix locking (must hold rtnl around using nl80211_fam.attrbuf)
* make init self-contained instead of relying on other cb->args
Signed-off-by: Denis Kenzior <denkenz@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* revert a recent wext patch, which Ben Hutchings noticed was
wrong, and it turns out not to be necessary for any driver
* fix an infinite loop that can occur under certain conditions
in mac80211's TDLS code (depending on regulatory information)
* add a cfg80211_get_station() static inline when cfg80211 isn't
built, to allow other modules to not have to depend on it for it
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Merge tag 'mac80211-for-davem-2016-08-30' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
Johannes Berg says:
====================
Three little fixes:
* revert a recent wext patch, which Ben Hutchings noticed was
wrong, and it turns out not to be necessary for any driver
* fix an infinite loop that can occur under certain conditions
in mac80211's TDLS code (depending on regulatory information)
* add a cfg80211_get_station() static inline when cfg80211 isn't
built, to allow other modules to not have to depend on it for it
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Minor overlapping changes for both merge conflicts.
Resolution work done by Stephen Rothwell was used
as a reference.
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull networking fixes from David Miller:
1) Buffers powersave frame test is reversed in cfg80211, fix from Felix
Fietkau.
2) Remove bogus WARN_ON in openvswitch, from Jarno Rajahalme.
3) Fix some tg3 ethtool logic bugs, and one that would cause no
interrupts to be generated when rx-coalescing is set to 0. From
Satish Baddipadige and Siva Reddy Kallam.
4) QLCNIC mailbox corruption and napi budget handling fix from Manish
Chopra.
5) Fix fib_trie logic when walking the trie during /proc/net/route
output than can access a stale node pointer. From David Forster.
6) Several sctp_diag fixes from Phil Sutter.
7) PAUSE frame handling fixes in mlxsw driver from Ido Schimmel.
8) Checksum fixup fixes in bpf from Daniel Borkmann.
9) Memork leaks in nfnetlink, from Liping Zhang.
10) Use after free in rxrpc, from David Howells.
11) Use after free in new skb_array code of macvtap driver, from Jason
Wang.
12) Calipso resource leak, from Colin Ian King.
13) mediatek bug fixes (missing stats sync init, etc.) from Sean Wang.
14) Fix bpf non-linear packet write helpers, from Daniel Borkmann.
15) Fix lockdep splats in macsec, from Sabrina Dubroca.
16) hv_netvsc bug fixes from Vitaly Kuznetsov, mostly to do with VF
handling.
17) Various tc-action bug fixes, from CONG Wang.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (116 commits)
net_sched: allow flushing tc police actions
net_sched: unify the init logic for act_police
net_sched: convert tcf_exts from list to pointer array
net_sched: move tc offload macros to pkt_cls.h
net_sched: fix a typo in tc_for_each_action()
net_sched: remove an unnecessary list_del()
net_sched: remove the leftover cleanup_a()
mlxsw: spectrum: Allow packets to be trapped from any PG
mlxsw: spectrum: Unmap 802.1Q FID before destroying it
mlxsw: spectrum: Add missing rollbacks in error path
mlxsw: reg: Fix missing op field fill-up
mlxsw: spectrum: Trap loop-backed packets
mlxsw: spectrum: Add missing packet traps
mlxsw: spectrum: Mark port as active before registering it
mlxsw: spectrum: Create PVID vPort before registering netdevice
mlxsw: spectrum: Remove redundant errors from the code
mlxsw: spectrum: Don't return upon error in removal path
i40e: check for and deal with non-contiguous TCs
ixgbe: Re-enable ability to toggle VLAN filtering
ixgbe: Force VLNCTRL.VFE to be set in all VMDq paths
...
Different gcc versions appear to be treating enum with different
signedness, causing warnings with the out parameter one way or
the other.
Just use the correct type to avoid all that.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
