This file only feeds a debugfs file that isn't very useful, so remove
it. If necessary, we can add other ways to get this information, for
example in the NL80211_CMD_PROBE_CLIENT response.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The function is void and static, so just ifdef its contents
instead of duplicating the declaration.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Printing "N/A mBi" is strange - print just "N/A" instead.
Also add a missing opening parenthesis.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Instead of having a lot of places that free ignored requests
and then return REG_REQ_OK, make reg_process_hint() process
REG_REQ_IGNORE by freeing the request, and let functions it
calls return that instead of freeing.
This also fixes a leak when a second (different) country IE
hint was ignored.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This function can only deal with treatment values OK and ALREADY_SET
so make the callees not return anything else and warn if they do.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If there's a built-in regulatory database, there may be little point
in also calling out to CRDA and failing if the system is configured
that way. Allow removing CRDA support to save ~1K kernel size.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When the functions reg_set_rd_driver() and reg_set_rd_country_ie()
return with an error, the calling function already restores data
by calling restore_regulatory_settings(), so there's no need to
also schedule a timeout (which would lead to other side effects
such as indicating CRDA failed, which clearly isn't true.) Remove
the scheduling.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Instead of searching the built-in database only in the worker,
search it directly and return an error if the entry cannot be
found (or memory cannot be allocated.) This means that builtin
database queries no longer rely on the timeout.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The new name is more appropriate since in the case of a built-in
database it may not really rely on CRDA.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The function reg_call_crda() can't actually validly return
REG_REQ_IGNORE as it does now when calling CRDA fails since
that return value isn't handled properly. Fix that.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
That file contains just a single function, which itself is just a
single statement to call a different function. Remove it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There's only a single caller of this function, so it can
be moved to the same file and made static.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
As this API has never really seen any use and most drivers don't
ever use the value derived from it, remove it.
Change the only driver using it (rt2x00) to simply use the DTIM
period instead of the "max sleep" time.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If multiple scan plans were set for scheduled scan, do not restart
scheduled scan on reconfig because it is possible that some scan
plans were already completed and there is no need to run them all
over again. Instead, notify userspace that scheduled scan stopped
so it can configure new scan plans for scheduled scan.
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add the option to configure multiple 'scan plans' for scheduled scan.
Each 'scan plan' defines the number of scan cycles and the interval
between scans. The scan plans are executed in the order they were
configured. The last scan plan will always run infinitely and thus
defines only the interval between scans.
The maximum number of scan plans supported by the device and the
maximum number of iterations in a single scan plan are advertised
to userspace so it can configure the scan plans appropriately.
When scheduled scan results are received there is no way to know which
scan plan is being currently executed, so there is no way to know when
the next scan iteration will start. This is not a problem, however.
The scan start timestamp is only used for flushing old scan results,
and there is no difference between flushing all results received until
the end of the previous iteration or the start of the current one,
since no results will be received in between.
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
For location and connectivity services, userspace would often like
to know the time when the BSS was last seen. The current "last seen"
value is calculated in a way that makes it less useful, especially
if the system suspended in the meantime.
Add the ability for the driver to report a real CLOCK_BOOTTIME stamp
that can then be reported to userspace (if present).
Drivers wishing to use this must be converted to the new API to call
cfg80211_inform_bss_data() or cfg80211_inform_bss_frame_data(). They
need to ensure the reported value is accurate enough even when the
frame might have been buffered in the device (e.g. firmware.)
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
[modified to use struct, inlines]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This reverts commit 5c48f12017.
Some device drivers (ath10k) offload part of aggregation including AddBA/DelBA
negotiations to firmware. In such scenario, the PMF configuration of
the station needs to be provided to driver to enable encryption of
AddBA/DelBA action frames.
Signed-off-by: Tamizh chelvam <c_traja@qti.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Currently it's possible for someone to send a vlan range to the kernel
with the pvid flag set which will result in the pvid bouncing from a
vlan to vlan and isn't correct, it also introduces problems for hardware
where it doesn't make sense having more than 1 pvid. iproute2 already
enforces this, so let's enforce it on kernel-side as well.
Reported-by: Elad Raz <eladr@mellanox.com>
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix a smatch warning:
drivers/atm/iphase.c:1178 rx_pkt() warn: curly braces intended?
The code is correct, the indention is misleading. In case the allocation
of skb fails, we want to skip to the end.
Signed-off-by: Tillmann Heidsieck <theidsieck@leenox.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Smatch complains about returning hard coded error codes, silence this
warning.
drivers/atm/iphase.c:115 ia_enque_rtn_q() warn: returning -1 instead of -ENOMEM is sloppy
Signed-off-by: Tillmann Heidsieck <theidsieck@leenox.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch makes ip6_route_info_create return err pointer instead of
returning the rt pointer by reference as suggested by Dave
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch fix the building error reported by Jiri Pirko <jiri@resnulli.us>
drivers/net/ethernet/hisilicon/hns/hnae.h:465:2: error: unknown type
name 'phy_interface_t'
phy_interface_t phy_if;
^
the full build log is on https://lists.01.org/pipermail/kbuild-all.
Signed-off-by: huangdaode <huangdaode@hisilicon.com>
Signed-off-by: yankejian <yankejian@huawei.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
timewait or request sockets are small and do not contain sk->sk_tsflags
Without this fix, we might read garbage, and crash later in
__skb_complete_tx_timestamp()
-> sock_queue_err_skb()
(These pseudo sockets do not have an error queue either)
Fixes: ca6fb06518 ("tcp: attach SYNACK messages to request sockets instead of listener")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric W. Biederman says:
====================
net: Pass net into defragmentation
This is the next installment of my work to pass struct net through the
output path so the code does not need to guess how to figure out which
network namespace it is in, and ultimately routes can have output
devices in another network namespace.
In netfilter and af_packet we defragment packets in the output path,
and there is the usual amount of confusion about how to compute which
net we are processing the packets in. This patchset clears that
confusion up by explicitly passing in struct net in ip_defrag,
ip_check_defrag, and nf_ct_frag6_gather.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The function nf_ct_frag6_gather is called on both the input and the
output paths of the networking stack. In particular ipv6_defrag which
calls nf_ct_frag6_gather is called from both the the PRE_ROUTING chain
on input and the LOCAL_OUT chain on output.
The addition of a net parameter makes it explicit which network
namespace the packets are being reassembled in, and removes the need
for nf_ct_frag6_gather to guess.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The function ip_defrag is called on both the input and the output
paths of the networking stack. In particular conntrack when it is
tracking outbound packets from the local machine calls ip_defrag.
So add a struct net parameter and stop making ip_defrag guess which
network namespace it needs to defragment packets in.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
ip_call_ra_chain is called early in the forwarding chain from
ip_forward and ip_mr_input, which makes skb->dev the correct
expression to get the input network device and dev_net(skb->dev) a
correct expression for the network namespace the packet is being
processed in.
Compute the network namespace and store it in a variable to make the
code clearer.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Recent TCP listener patches exposed a prior af_packet bug :
match_fanout_group() blindly assumes it is always safe
to cast sk to a packet socket to compare fanout with af_packet_priv
But SYNACK packets can be sent while attached to request_sock, which
are smaller than a "struct sock".
We can read non existent memory and crash.
Fixes: c0de08d042 ("af_packet: don't emit packet on orig fanout group")
Fixes: ca6fb06518 ("tcp: attach SYNACK messages to request sockets instead of listener")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Cc: Eric Leblond <eric@regit.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
iwlwifi
* some debugfs improvements
* fix signedness in beacon statistics
* deinline some functions to reduce size when device tracing is enabled
* filter beacons out in AP mode when no stations are associated
* deprecate firmwares version -12
* fix a runtime PM vs. legacy suspend race
* one-liner fix for a ToF bug
* clean-ups in the rx code
* small debugging improvement
* fix WoWLAN with new firmware versions
* more clean-ups towards multiple RX queues;
* some rate scaling fixes and improvements;
* some time-of-flight fixes;
* other generic improvements and clean-ups;
brcmfmac
* rework code dealing with multiple interfaces
* allow logging firmware console using debug level
* support for BCM4350, BCM4365, and BCM4366 PCIE devices
* fixed for legacy P2P and P2P device handling
* correct set and get tx-power
ath9k
* add support for Outside Context of a BSS (OCB) mode
mwifiex
* add USB multichannel feature
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Merge tag 'wireless-drivers-next-for-davem-2015-10-09' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next
Kalle Valo says:
====================
Major changes:
iwlwifi
* some debugfs improvements
* fix signedness in beacon statistics
* deinline some functions to reduce size when device tracing is enabled
* filter beacons out in AP mode when no stations are associated
* deprecate firmwares version -12
* fix a runtime PM vs. legacy suspend race
* one-liner fix for a ToF bug
* clean-ups in the rx code
* small debugging improvement
* fix WoWLAN with new firmware versions
* more clean-ups towards multiple RX queues;
* some rate scaling fixes and improvements;
* some time-of-flight fixes;
* other generic improvements and clean-ups;
brcmfmac
* rework code dealing with multiple interfaces
* allow logging firmware console using debug level
* support for BCM4350, BCM4365, and BCM4366 PCIE devices
* fixed for legacy P2P and P2P device handling
* correct set and get tx-power
ath9k
* add support for Outside Context of a BSS (OCB) mode
mwifiex
* add USB multichannel feature
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch allows configuring how the source address of ICMP
redirect messages is selected; by default the old behaviour is
retained, while setting icmp_redirects_use_orig_daddr force the
usage of the destination address of the packet that caused the
redirect.
The new behaviour fits closely the RFC 5798 section 8.1.1, and fix the
following scenario:
Two machines are set up with VRRP to act as routers out of a subnet,
they have IPs x.x.x.1/24 and x.x.x.2/24, with VRRP holding on to
x.x.x.254/24.
If a host in said subnet needs to get an ICMP redirect from the VRRP
router, i.e. to reach a destination behind a different gateway, the
source IP in the ICMP redirect is chosen as the primary IP on the
interface that the packet arrived at, i.e. x.x.x.1 or x.x.x.2.
The host will then ignore said redirect, due to RFC 1122 section 3.2.2.2,
and will continue to use the wrong next-op.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Some drivers need to implement both switchdev vlan ops and
vid_add/kill ndos. For that to work in bridge code, we need to try
switchdev op first when adding/deleting vlan id.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In bnx2_init_board, missing free temp_stats_blk on error path when
some operations do failed. Just add the 'kfree' operation.
Signed-off-by: Wang Weidong <wangweidong1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet says:
====================
tcp: better smp listener behavior
As promised in last patch series, we implement a better SO_REUSEPORT
strategy, based on cpu hints if given by the application.
We also moved sk_refcnt out of the cache line containing the lookup
keys, as it was considerably slowing down smp operations because
of false sharing. This was simpler than converting listen sockets
to conventional RCU (to avoid sk_refcnt dirtying)
Could process 6.0 Mpps SYN instead of 4.2 Mpps on my test server.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Reducing tcp_timewait_sock from 280 bytes to 272 bytes
allows SLAB to pack 15 objects per page instead of 14 (on x86)
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
One 32bit hole is following skc_refcnt, use it.
skc_incoming_cpu can also be an union for request_sock rcv_wnd.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
sk->sk_refcnt is dirtied for every TCP/UDP incoming packet.
This is a performance issue if multiple cpus hit a common socket,
or multiple sockets are chained due to SO_REUSEPORT.
By moving sk_refcnt 8 bytes further, first 128 bytes of sockets
are mostly read. As they contain the lookup keys, this has
a considerable performance impact, as cpus can cache them.
These 8 bytes are not wasted, we use them as a place holder
for various fields, depending on the socket type.
Tested:
SYN flood hitting a 16 RX queues NIC.
TCP listener using 16 sockets and SO_REUSEPORT
and SO_INCOMING_CPU for proper siloing.
Could process 6.0 Mpps SYN instead of 4.2 Mpps
Kernel profile looked like :
11.68% [kernel] [k] sha_transform
6.51% [kernel] [k] __inet_lookup_listener
5.07% [kernel] [k] __inet_lookup_established
4.15% [kernel] [k] memcpy_erms
3.46% [kernel] [k] ipt_do_table
2.74% [kernel] [k] fib_table_lookup
2.54% [kernel] [k] tcp_make_synack
2.34% [kernel] [k] tcp_conn_request
2.05% [kernel] [k] __netif_receive_skb_core
2.03% [kernel] [k] kmem_cache_alloc
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
SO_INCOMING_CPU as added in commit 2c8c56e15d was a getsockopt() command
to fetch incoming cpu handling a particular TCP flow after accept()
This commits adds setsockopt() support and extends SO_REUSEPORT selection
logic : If a TCP listener or UDP socket has this option set, a packet is
delivered to this socket only if CPU handling the packet matches the specified
one.
This allows to build very efficient TCP servers, using one listener per
RX queue, as the associated TCP listener should only accept flows handled
in softirq by the same cpu.
This provides optimal NUMA behavior and keep cpu caches hot.
Note that __inet_lookup_listener() still has to iterate over the list of
all listeners. Following patch puts sk_refcnt in a different cache line
to let this iteration hit only shared and read mostly cache lines.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Edward Hyunkoo Jee <edjee@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
It's useful to allow users to set fwmark for an individual packet,
without changing the socket state. The function this patch adds in
sock layer can be used by the protocols that need such a feature.
Signed-off-by: Edward Hyunkoo Jee <edjee@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexei Starovoitov says:
====================
bpf: unprivileged
v1-v2:
- this set logically depends on cb patch
"bpf: fix cb access in socket filter programs":
http://patchwork.ozlabs.org/patch/527391/
which is must have to allow unprivileged programs.
Thanks Daniel for finding that issue.
- refactored sysctl to be similar to 'modules_disabled'
- dropped bpf_trace_printk
- split tests into separate patch and added more tests
based on discussion
v1 cover letter:
I think it is time to liberate eBPF from CAP_SYS_ADMIN.
As was discussed when eBPF was first introduced two years ago
the only piece missing in eBPF verifier is 'pointer leak detection'
to make it available to non-root users.
Patch 1 adds this pointer analysis.
The eBPF programs, obviously, need to see and operate on kernel addresses,
but with these extra checks they won't be able to pass these addresses
to user space.
Patch 2 adds accounting of kernel memory used by programs and maps.
It changes behavoir for existing root users, but I think it needs
to be done consistently for both root and non-root, since today
programs and maps are only limited by number of open FDs (RLIMIT_NOFILE).
Patch 2 accounts program's and map's kernel memory as RLIMIT_MEMLOCK.
Unprivileged eBPF is only meaningful for 'socket filter'-like programs.
eBPF programs for tracing and TC classifiers/actions will stay root only.
In parallel the bpf fuzzing effort is ongoing and so far
we've found only one verifier bug and that was already fixed.
The 'constant blinding' pass also being worked on.
It will obfuscate constant-like values that are part of eBPF ISA
to make jit spraying attacks even harder.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
