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Some layers such as SMP depend on getting notified about encryption
changes immediately as they only allow certain PDU to be transmitted
over an encrypted link which may cause SMP implementation to reject
valid PDUs received thus causing pairing to fail when it shouldn't.
Fixes: 7aca0ac4792e ("Bluetooth: Wait for HCI_OP_WRITE_AUTH_PAYLOAD_TO to complete")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
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In v6.7-rc1 sparse warns:
drivers/net/wireless/ath/ath11k/mac.c:4702:15: error: too long token expansion
drivers/net/wireless/ath/ath11k/mac.c:4702:15: error: too long token expansion
drivers/net/wireless/ath/ath11k/mac.c:8393:23: error: too long token expansion
drivers/net/wireless/ath/ath11k/mac.c:8393:23: error: too long token expansion
Workaround the warnings by refactoring the code to a new function, which also
reduces code duplication. And in the new function use max3() to make the code
more readable.
No functional changes, compile tested only.
Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://msgid.link/20231214161740.1582340-1-kvalo@kernel.org
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This reverts commit 1f1f7d548a00ebe50808cb1f580df9693e194a7c. The commit
caused bootup failure on QCN9274 hw2.0 platform. Incorrect hardcode DP
irq offset overwrite the CE irq, which caused the driver to miss the
mandatory bootup message from the firmware through the CE interrupt. This
occurs because the CE count differs between platforms. The revert has no
impact since the original change was based on an incorrect assumption.
Log:
ath12k_pci 0000:06:00.0: fw_version 0x1011001d fw_build_timestamp 2022-12-02 01:16 fw_build_id QC_IMAGE_VERSION_STRING=WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
ath12k_pci 0000:06:00.0: failed to receive control response completion, polling..
ath12k_pci 0000:06:00.0: Service connect timeout
ath12k_pci 0000:06:00.0: failed to connect to HTT: -110
ath12k_pci 0000:06:00.0: failed to start core: -110
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4
Signed-off-by: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://msgid.link/20231214053215.2087308-1-quic_periyasa@quicinc.com
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Rather than using svc_get() and svc_put() to hold a stable reference to
the nfsd_svc for netlink lookups, simply hold the mutex for the entire
time.
The "entire" time isn't very long, and the mutex is not often contented.
This makes way for us to remove the refcounts of svc, which is more
confusing than useful.
Reported-by: Jeff Layton <jlayton@kernel.org>
Closes: https://lore.kernel.org/linux-nfs/5d9bbb599569ce29f16e4e0eef6b291eda0f375b.camel@kernel.org/T/#u
Fixes: bd9d6a3efa97 ("NFSD: add rpc_status netlink support")
Signed-off-by: NeilBrown <neilb@suse.de>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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If write_ports_addfd or write_ports_addxprt fail, they call nfsd_put()
without calling nfsd_last_thread(). This leaves nn->nfsd_serv pointing
to a structure that has been freed.
So remove 'static' from nfsd_last_thread() and call it when the
nfsd_serv is about to be destroyed.
Fixes: ec52361df99b ("SUNRPC: stop using ->sv_nrthreads as a refcount")
Signed-off-by: NeilBrown <neilb@suse.de>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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As the ring buffer recording requires cmpxchg() to work, if the
architecture does not support cmpxchg in NMI, then do not do any recording
within an NMI.
Link: https://lore.kernel.org/linux-trace-kernel/20231213175403.6fc18540@gandalf.local.home
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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The rb_time_cmpxchg() on 32-bit architectures requires setting three
32-bit words to represent the 64-bit timestamp, with some salt for
synchronization. Those are: msb, top, and bottom
The issue is, the rb_time_cmpxchg() did not properly salt the msb portion,
and the msb that was written was stale.
Link: https://lore.kernel.org/linux-trace-kernel/20231215084114.20899342@rorschach.local.home
Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Fixes: f03f2abce4f39 ("ring-buffer: Have 32 bit time stamps use all 64 bits")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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In 'rt2x00queue_create_tx_descriptor()', there is no need to call
'ieee80211_get_rts_cts_rate()' while checking for RTS/CTS frame
since this function returns NULL or pointer to internal bitrate
table entry, and the return value is not actually used. Compile
tested only.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20231213051449.126963-1-dmantipov@yandex.ru
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The following race can cause rb_time_read() to observe a corrupted time
stamp:
rb_time_cmpxchg()
[...]
if (!rb_time_read_cmpxchg(&t->msb, msb, msb2))
return false;
if (!rb_time_read_cmpxchg(&t->top, top, top2))
return false;
<interrupted before updating bottom>
__rb_time_read()
[...]
do {
c = local_read(&t->cnt);
top = local_read(&t->top);
bottom = local_read(&t->bottom);
msb = local_read(&t->msb);
} while (c != local_read(&t->cnt));
*cnt = rb_time_cnt(top);
/* If top and msb counts don't match, this interrupted a write */
if (*cnt != rb_time_cnt(msb))
return false;
^ this check fails to catch that "bottom" is still not updated.
So the old "bottom" value is returned, which is wrong.
Fix this by checking that all three of msb, top, and bottom 2-bit cnt
values match.
The reason to favor checking all three fields over requiring a specific
update order for both rb_time_set() and rb_time_cmpxchg() is because
checking all three fields is more robust to handle partial failures of
rb_time_cmpxchg() when interrupted by nested rb_time_set().
Link: https://lore.kernel.org/lkml/20231211201324.652870-1-mathieu.desnoyers@efficios.com/
Link: https://lore.kernel.org/linux-trace-kernel/20231212193049.680122-1-mathieu.desnoyers@efficios.com
Fixes: f458a1453424e ("ring-buffer: Test last update in 32bit version of __rb_time_read()")
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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Mathieu Desnoyers pointed out an issue in the rb_time_cmpxchg() for 32 bit
architectures. That is:
static bool rb_time_cmpxchg(rb_time_t *t, u64 expect, u64 set)
{
unsigned long cnt, top, bottom, msb;
unsigned long cnt2, top2, bottom2, msb2;
u64 val;
/* The cmpxchg always fails if it interrupted an update */
if (!__rb_time_read(t, &val, &cnt2))
return false;
if (val != expect)
return false;
<<<< interrupted here!
cnt = local_read(&t->cnt);
The problem is that the synchronization counter in the rb_time_t is read
*after* the value of the timestamp is read. That means if an interrupt
were to come in between the value being read and the counter being read,
it can change the value and the counter and the interrupted process would
be clueless about it!
The counter needs to be read first and then the value. That way it is easy
to tell if the value is stale or not. If the counter hasn't been updated,
then the value is still good.
Link: https://lore.kernel.org/linux-trace-kernel/20231211201324.652870-1-mathieu.desnoyers@efficios.com/
Link: https://lore.kernel.org/linux-trace-kernel/20231212115301.7a9c9a64@gandalf.local.home
Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Fixes: 10464b4aa605e ("ring-buffer: Add rb_time_t 64 bit operations for speeding up 32 bit")
Reported-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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The new WiFi 7 chips change the design, so no need to disable/enable
BB/RF when core_start(). Keep the same logic for existing chips.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20231211083341.118047-7-pkshih@realtek.com
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To support MLO of WiFi 7, we should configure hardware as DBCC mode, and
notify this status to firmware.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20231211083341.118047-6-pkshih@realtek.com
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Many existing MAC access functions are used by WiFi 6 chips only, so add
suffix _ax to be clearer. Some are common and can be used by WiFi 7, so
export this kind of functions. This patch doesn't change logic at all.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20231211083341.118047-5-pkshih@realtek.com
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Before accessing CMAC and DMAC registers, we should ensure they have been
powered on, so add flag to determine the state. For old chips, we read
registers and check corresponding bit, but it takes extra cost to read.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20231211083341.118047-4-pkshih@realtek.com
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The power on/off functions are to turn on hardware function blocks and
to turn off them if we are going to stay in idle state.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20231211083341.118047-3-pkshih@realtek.com
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The XTAL SI is a serial interface to indirectly access registers of
analog hardware circuit. Since WiFi 7 chips use different registers, add
a ops to access them via common functions. This patch doesn't change logic
for existing chips.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20231211083341.118047-2-pkshih@realtek.com
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With formatted string loaded from firmware file, we can use the formatted
string ID and get corresponding string, and then use regular rtw89_debug()
to show the message if debug mask of RFK is enabled.
If the string ID doesn't present, fallback to print plain hexadecimal.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20231213005054.10568-7-pkshih@realtek.com
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RFK log events contains two types. One called RUN log is to reflect state
during RFK is running, and it replies on formatted string loaded from
firmware file, but print this type as plain hexadecimal only in this patch.
The other is REPORT log that reflects the final result of a RFK, and
each calibration has its own struct to carry many specific information.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20231213005054.10568-6-pkshih@realtek.com
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Trigger a RFK (RF calibration) in firmware by a H2C command, and in
progress it reports log and a result finally by C2H events. Firstly, add
prototype of the C2H event handlers to have a simple picture of framework.
The callers who trigger H2C will wait until a C2H event is received,
so we must process these C2H events in receiving process. Thus, mark this
kind of C2H events as atomic. Also, timestamp is also useful for
debugging, mark C2H events carrying RFK log as atomic as well.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20231213005054.10568-5-pkshih@realtek.com
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To debug RFK (RF calibration) in firmware, it sends log via firmware C2H
events to driver with string format ID and four arguments. Load formatted
string from firmware file, and the string ID can get back its string. Then,
use regular print format to show the message.
This firmware element layout looks like
+============================================+
| elm ID | elm size | version | |
+----------+----------+----------+-----------+
| | nr |rsvd |rfk_id|rsvd|
+--------------------------------------------+
| offset[] (__le16 * nr) |
| ... |
+--------------------------------------------+
| formatted string with null termintor (*nr) |
| ... |
+============================================+
* a firmware file can contains more than one elements with this element ID
named RTW89_FW_ELEMENT_ID_RFKLOG_FMT (19), because many RFK needs its
own formatted strings, so add 'rfk_id' to know it belongs to which RFK.
* the 'formatted string' just follow 'offset[]' without padding to align
32bits.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20231213005054.10568-4-pkshih@realtek.com
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8922AE has more than one hardware version, and they use different BB MCU
firmware, so occupy a byte from element priv[] to annotate version. Since
there are more than one firmware and only matched version is adopted,
return 1 to ignore not matched firmware.
+===========================================+
| elm ID | elm size | version | |
+----------+----------+----------+----------+
| | element_priv[] |
+-------------------------------------------+
change to |
v
+===========================================+
| elm ID | elm size | version | |
+----------+----------+----------+----------+
| | cv | element_rsvd[] |
+-------------------------------------------+
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20231213005054.10568-3-pkshih@realtek.com
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The TX power track tables are used to define compensation power reflected
to thermal value. Currently, we have 16 (2 * 4 * 2) tables made by
combinations of
{negative/positive thermal value, 2GHz/2GHz-CCK/5GHz/6GHz, path A/B}
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20231213005054.10568-2-pkshih@realtek.com
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When filtering is enabled, a temporary buffer is created to place the
content of the trace event output so that the filter logic can decide
from the trace event output if the trace event should be filtered out or
not. If it is to be filtered out, the content in the temporary buffer is
simply discarded, otherwise it is written into the trace buffer.
But if an interrupt were to come in while a previous event was using that
temporary buffer, the event written by the interrupt would actually go
into the ring buffer itself to prevent corrupting the data on the
temporary buffer. If the event is to be filtered out, the event in the
ring buffer is discarded, or if it fails to discard because another event
were to have already come in, it is turned into padding.
The update to the write_stamp in the rb_try_to_discard() happens after a
fix was made to force the next event after the discard to use an absolute
timestamp by setting the before_stamp to zero so it does not match the
write_stamp (which causes an event to use the absolute timestamp).
But there's an effort in rb_try_to_discard() to put back the write_stamp
to what it was before the event was added. But this is useless and
wasteful because nothing is going to be using that write_stamp for
calculations as it still will not match the before_stamp.
Remove this useless update, and in doing so, we remove another
cmpxchg64()!
Also update the comments to reflect this change as well as remove some
extra white space in another comment.
Link: https://lore.kernel.org/linux-trace-kernel/20231215081810.1f4f38fe@rorschach.local.home
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Vincent Donnefort <vdonnefort@google.com>
Fixes: b2dd797543cf ("ring-buffer: Force absolute timestamp on discard of event")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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If an update to an event is interrupted by another event between the time
the initial event allocated its buffer and where it wrote to the
write_stamp, the code try to reset the write stamp back to the what it had
just overwritten. It knows that it was overwritten via checking the
before_stamp, and if it didn't match what it wrote to the before_stamp
before it allocated its space, it knows it was overwritten.
To put back the write_stamp, it uses the before_stamp it read. The problem
here is that by writing the before_stamp to the write_stamp it makes the
two equal again, which means that the write_stamp can be considered valid
as the last timestamp written to the ring buffer. But this is not
necessarily true. The event that interrupted the event could have been
interrupted in a way that it was interrupted as well, and can end up
leaving with an invalid write_stamp. But if this happens and returns to
this context that uses the before_stamp to update the write_stamp again,
it can possibly incorrectly make it valid, causing later events to have in
correct time stamps.
As it is OK to leave this function with an invalid write_stamp (one that
doesn't match the before_stamp), there's no reason to try to make it valid
again in this case. If this race happens, then just leave with the invalid
write_stamp and the next event to come along will just add a absolute
timestamp and validate everything again.
Bonus points: This gets rid of another cmpxchg64!
Link: https://lore.kernel.org/linux-trace-kernel/20231214222921.193037a7@gandalf.local.home
Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Vincent Donnefort <vdonnefort@google.com>
Fixes: a389d86f7fd09 ("ring-buffer: Have nested events still record running time stamp")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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AP BSSID configuration is missing at AP start. Without this fix, FW returns
STA interface MAC address after first init. When hostapd restarts, it gets MAC
address from netdev before driver sets STA MAC to netdev again. Now MAC address
between hostapd and net interface are different causes STA cannot connect to
AP. After that MAC address of uap0 mlan0 become the same. And issue disappears
after following hostapd restart (another issue is AP/STA MAC address become the
same).
This patch fixes the issue cleanly.
Signed-off-by: David Lin <yu-hao.lin@nxp.com>
Fixes: 12190c5d80bd ("mwifiex: add cfg80211 start_ap and stop_ap handlers")
Cc: stable@vger.kernel.org
Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Tested-by: Rafael Beims <rafael.beims@toradex.com> # Verdin iMX8MP/SD8997 SD
Acked-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20231215005118.17031-1-yu-hao.lin@nxp.com
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For SDIO IW416, due to a bug, FW may return ready before complete full
initialization. Command timeout may occur at driver load after reboot.
Workaround by adding 100ms delay at checking FW status.
Signed-off-by: David Lin <yu-hao.lin@nxp.com>
Cc: stable@vger.kernel.org
Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Acked-by: Brian Norris <briannorris@chromium.org>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com> # Verdin AM62 (IW416)
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20231208234029.2197-1-yu-hao.lin@nxp.com
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rm the second include <linux/slab.h>
Signed-off-by: Wang Jinchao <wangjinchao@xfusion.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Jakub Kicinski says:
====================
netlink: specs: prep legacy specs for C code gen
Minor adjustments to some specs to make them ready for C code gen.
v2:
- fix MAINATINERS and subject of patch 3
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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We assume in handful of places that the name of the spec is
the same as the name of the family. We could fix that but
it seems like a fair assumption to make. Rename the MPTCP
spec instead.
Reviewed-by: Mat Martineau <martineau@kernel.org>
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Align the enum-names of OVS with what's actually in the uAPI.
Either correct the names, or mark the enum as empty because
the values are in fact #defines.
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Op's "attributes" list is a workaround for families with a single
attr set. We don't want to render a single huge request structure,
the same for each op since we know that most ops accept only a small
set of attributes. "Attributes" list lets us narrow down the attributes
to what op acctually pays attention to.
It doesn't make sense to put names of fixed headers in there.
They are not "attributes" and we can't really narrow down the struct
members.
Remove the fixed header fields from attrs for ovs families
in preparation for C codegen support.
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue
Tony Nguyen says:
====================
add v2 FW logging for ice driver
Paul Stillwell says:
Firmware (FW) log support was added to the ice driver, but that version is
no longer supported. There is a newer version of FW logging (v2) that
adds more control knobs to get the exact data out of the FW
for debugging.
The interface for FW logging is debugfs. This was chosen based on
discussions here:
https://lore.kernel.org/netdev/20230214180712.53fc8ba2@kernel.org/ and
https://lore.kernel.org/netdev/20231012164033.1069fb4b@kernel.org/
We talked about using devlink in a variety of ways, but none of those
options made any sense for the way the FW reports data. We briefly talked
about using ethtool, but that seemed to go by the wayside. Ultimately it
seems like using debugfs is the way to go so re-implement the code to use
that.
FW logging is across all the PFs on the device so restrict the commands to
only PF0.
If the device supports FW logging then a directory named 'fwlog' will be
created under '/sys/kernel/debug/ice/<pci_dev>'. A variety of files will be
created to manage the behavior of logging. The following files will be
created:
- modules/<module>
- nr_messages
- enable
- log_size
- data
where
modules/<module> is used to read/write the log level for a specific module
nr_messages is used to determine how many events should be in each message
sent to the driver
enable is used to start/stop FW logging. This is a boolean value so only 1
or 0 are permissible values
log_size is used to configure the amount of memory the driver uses for log
data
data is used to read/clear the log data
Generally there is a lot of data and dumping that data to syslog will
result in a loss of data. This causes problems when decoding the data and
the user doesn't know that data is missing until later. Instead of dumping
the FW log output to syslog use debugfs. This ensures that all the data the
driver has gets retrieved correctly.
The FW log data is binary data that the FW team decodes to determine what
happened in firmware. The binary blob is sent to Intel for decoding.
---
v6:
- use seq_printf() for outputting module info when reading from 'module' file
- replace code that created argc and argv for handling command line input
- removed checks in all the _read() and _write() functions to see if FW logging
is supported because the files will not exist if it is not supported
- removed warnings on allocation failures on debugfs file creation failures
- removed a newline between memory allocation and checking if the memory was
allocated
- fixed cases where we could just return the value from a function call
instead of saving the value in a variable
- moved the check for PFO in ice_fwlog_init() to an earlier patch
- reworked all of argument scanning in the _write() functions in ice_debugfs.c
to remove adding characters past the end of the buffer
v5: https://lore.kernel.org/netdev/20231205211251.2122874-1-anthony.l.nguyen@intel.com/
- changed the log level configuration from a single file for all modules to a
file per module.
- changed 'nr_buffs' to 'log_size' because users understand memory sizes
better than a number of buffers
- changed 'resolution' to 'nr_messages' to better reflect what it represents
- updated documentation to reflect these changes
- updated documentation to indicate that FW logging must be disabled to
clear the data. also clarified that any value written to the 'data' file will
clear the data
v4: https://lore.kernel.org/netdev/20231005170110.3221306-1-anthony.l.nguyen@intel.com/
- removed CONFIG_DEBUG_FS wrapper around code because the debugfs calls handle
this case already
- moved ice_debugfs_exit() call to remove unreachable code issue
- minor changes to documentation based on feedback
v3: https://lore.kernel.org/netdev/20230815165750.2789609-1-anthony.l.nguyen@intel.com/
- Adjust error path cleanup in ice_module_init() for unreachable code.
v2: https://lore.kernel.org/netdev/20230810170109.1963832-1-anthony.l.nguyen@intel.com/
- Rewrote code to use debugfs instead of devlink
v1: https://lore.kernel.org/netdev/20230209190702.3638688-1-anthony.l.nguyen@intel.com/
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Fix the extraction of num_csrows and num_chans. The extraction of the
num_rows is wrong. Instead of extracting using the FIELD_GET it is
calling FIELD_PREP.
The issue was masked as the default design has the rows as 0.
Fixes: 6f15b178cd63 ("EDAC/versal: Add a Xilinx Versal memory controller driver")
Closes: https://lore.kernel.org/all/60ca157e-6eff-d12c-9dc0-8aeab125edda@linux-m68k.org/
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20231215053352.8740-1-shubhrajyoti.datta@amd.com
|
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syzbot found an interesting netdev refcounting issue in
net/rose/af_rose.c, thanks to CONFIG_NET_DEV_REFCNT_TRACKER=y [1]
Problem is that rose_kill_by_device() can change rose->device
while other threads do not expect the pointer to be changed.
We have to first collect sockets in a temporary array,
then perform the changes while holding the socket
lock and rose_list_lock spinlock (in this order)
Change rose_release() to also acquire rose_list_lock
before releasing the netdev refcount.
[1]
[ 1185.055088][ T7889] ref_tracker: reference already released.
[ 1185.061476][ T7889] ref_tracker: allocated in:
[ 1185.066081][ T7889] rose_bind+0x4ab/0xd10
[ 1185.070446][ T7889] __sys_bind+0x1ec/0x220
[ 1185.074818][ T7889] __x64_sys_bind+0x72/0xb0
[ 1185.079356][ T7889] do_syscall_64+0x40/0x110
[ 1185.083897][ T7889] entry_SYSCALL_64_after_hwframe+0x63/0x6b
[ 1185.089835][ T7889] ref_tracker: freed in:
[ 1185.094088][ T7889] rose_release+0x2f5/0x570
[ 1185.098629][ T7889] __sock_release+0xae/0x260
[ 1185.103262][ T7889] sock_close+0x1c/0x20
[ 1185.107453][ T7889] __fput+0x270/0xbb0
[ 1185.111467][ T7889] task_work_run+0x14d/0x240
[ 1185.116085][ T7889] get_signal+0x106f/0x2790
[ 1185.120622][ T7889] arch_do_signal_or_restart+0x90/0x7f0
[ 1185.126205][ T7889] exit_to_user_mode_prepare+0x121/0x240
[ 1185.131846][ T7889] syscall_exit_to_user_mode+0x1e/0x60
[ 1185.137293][ T7889] do_syscall_64+0x4d/0x110
[ 1185.141783][ T7889] entry_SYSCALL_64_after_hwframe+0x63/0x6b
[ 1185.148085][ T7889] ------------[ cut here ]------------
WARNING: CPU: 1 PID: 7889 at lib/ref_tracker.c:255 ref_tracker_free+0x61a/0x810 lib/ref_tracker.c:255
Modules linked in:
CPU: 1 PID: 7889 Comm: syz-executor.2 Not tainted 6.7.0-rc4-syzkaller-00162-g65c95f78917e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:ref_tracker_free+0x61a/0x810 lib/ref_tracker.c:255
Code: 00 44 8b 6b 18 31 ff 44 89 ee e8 21 62 f5 fc 45 85 ed 0f 85 a6 00 00 00 e8 a3 66 f5 fc 48 8b 34 24 48 89 ef e8 27 5f f1 05 90 <0f> 0b 90 bb ea ff ff ff e9 52 fd ff ff e8 84 66 f5 fc 4c 8d 6d 44
RSP: 0018:ffffc90004917850 EFLAGS: 00010202
RAX: 0000000000000201 RBX: ffff88802618f4c0 RCX: 0000000000000000
RDX: 0000000000000202 RSI: ffffffff8accb920 RDI: 0000000000000001
RBP: ffff8880269ea5b8 R08: 0000000000000001 R09: fffffbfff23e35f6
R10: ffffffff91f1afb7 R11: 0000000000000001 R12: 1ffff92000922f0c
R13: 0000000005a2039b R14: ffff88802618f4d8 R15: 00000000ffffffff
FS: 00007f0a720ef6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f43a819d988 CR3: 0000000076c64000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
netdev_tracker_free include/linux/netdevice.h:4127 [inline]
netdev_put include/linux/netdevice.h:4144 [inline]
netdev_put include/linux/netdevice.h:4140 [inline]
rose_kill_by_device net/rose/af_rose.c:195 [inline]
rose_device_event+0x25d/0x330 net/rose/af_rose.c:218
notifier_call_chain+0xb6/0x3b0 kernel/notifier.c:93
call_netdevice_notifiers_info+0xbe/0x130 net/core/dev.c:1967
call_netdevice_notifiers_extack net/core/dev.c:2005 [inline]
call_netdevice_notifiers net/core/dev.c:2019 [inline]
__dev_notify_flags+0x1f5/0x2e0 net/core/dev.c:8646
dev_change_flags+0x122/0x170 net/core/dev.c:8682
dev_ifsioc+0x9ad/0x1090 net/core/dev_ioctl.c:529
dev_ioctl+0x224/0x1090 net/core/dev_ioctl.c:786
sock_do_ioctl+0x198/0x270 net/socket.c:1234
sock_ioctl+0x22e/0x6b0 net/socket.c:1339
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:871 [inline]
__se_sys_ioctl fs/ioctl.c:857 [inline]
__x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f0a7147cba9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f0a720ef0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f0a7159bf80 RCX: 00007f0a7147cba9
RDX: 0000000020000040 RSI: 0000000000008914 RDI: 0000000000000004
RBP: 00007f0a714c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f0a7159bf80 R15: 00007ffc8bb3a5f8
</TASK>
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Bernard Pidoux <f6bvp@free.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
When lockdep is enabled, the for_each_sibling_event(sibling, event)
macro checks that event->ctx->mutex is held. When creating a new group
leader event, we call perf_event_validate_size() on a partially
initialized event where event->ctx is NULL, and so when
for_each_sibling_event() attempts to check event->ctx->mutex, we get a
splat, as reported by Lucas De Marchi:
WARNING: CPU: 8 PID: 1471 at kernel/events/core.c:1950 __do_sys_perf_event_open+0xf37/0x1080
This only happens for a new event which is its own group_leader, and in
this case there cannot be any sibling events. Thus it's safe to skip the
check for siblings, which avoids having to make invasive and ugly
changes to for_each_sibling_event().
Avoid the splat by bailing out early when the new event is its own
group_leader.
Fixes: 382c27f4ed28f803 ("perf: Fix perf_event_validate_size()")
Closes: https://lore.kernel.org/lkml/20231214000620.3081018-1-lucas.demarchi@intel.com/
Closes: https://lore.kernel.org/lkml/ZXpm6gQ%2Fd59jGsuW@xpf.sh.intel.com/
Reported-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reported-by: Pengfei Xu <pengfei.xu@intel.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20231215112450.3972309-1-mark.rutland@arm.com
|
|
Tobias Waldekranz says:
====================
net: dsa: mv88e6xxx: Add "eth-mac" and "rmon" counter group support
The majority of the changes (2/8) are about refactoring the existing
ethtool statistics support to make it possible to read individual
counters, rather than the whole set.
4/8 tries to collect all information about a stat in a single place
using a mapper macro, which is then used to generate the original list
of stats, along with a matching enum. checkpatch is less than amused
with this construct, but prior art exists (__BPF_FUNC_MAPPER in
include/uapi/linux/bpf.h, for example).
To support the histogram counters from the "rmon" group, we have to
change mv88e6xxx's configuration of them. Instead of counting rx and
tx, we restrict them to rx-only. 6/8 has the details.
With that in place, adding the actual counter groups is pretty
straight forward (5,7/8).
Tie it all together with a selftest (8/8).
v3 -> v4:
- Return size_t from mv88e6xxx_stats_get_stats
- Spelling errors in commit message of 6/8
- Improve selftest:
- Report progress per-bucket
- Test both ports in the pair
- Increase MTU, if required
v2 -> v3:
- Added 6/8
- Added 8/8
v1 -> v2:
- Added 1/6
- Added 3/6
- Changed prototype of stats operation to reflect the fact that the
number of read stats are returned, no errors
- Moved comma into MV88E6XXX_HW_STAT_MAPPER definition
- Avoid the construction of mapping table iteration which relied on
struct layouts outside of mv88e6xxx's control
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Validate the operation of rx and tx histogram counters, if supported
by the interface, by sending batches of packets targeted for each
bucket.
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Report the applicable subset of an mv88e6xxx port's counters using
ethtool's standardized "rmon" counter group.
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Chips in this family only have one set of histogram counters, which
can be used to count ingressing and/or egressing traffic. mv88e6xxx
has, up until this point, kept the hardware default of counting both
directions.
In the mean time, standard counter group support has been added to
ethtool. Via that interface, drivers may report ingress-only and
egress-only histograms separately - but not combined.
In order for mv88e6xxx to maximize amount of diagnostic information
that can be exported via standard interfaces, we opt to limit the
histogram counters to ingress traffic only. Which will allow us to
export them via the standard "rmon" group in an upcoming commit.
The reason for choosing ingress-only over egress-only, is to be
compatible with RFC2819 (RMON MIB).
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Report the applicable subset of an mv88e6xxx port's counters using
ethtool's standardized "eth-mac" counter group.
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
With the upcoming standard counter group support, we are no longer
reading out the whole set of counters, but rather mapping a subset to
the requested group.
Therefore, create an enum with an ID for each stat, such that
mv88e6xxx_hw_stats[] can be subscripted with a human-readable ID
corresponding to the counter's name.
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
mv88e6xxx_get_stats, which collects stats from various sources,
expects all callees to return the number of stats read. If an error
occurs, 0 should be returned.
Prevent future mishaps of this kind by updating the return type to
reflect this contract.
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
This change contains no functional change. We simply push the hardware
specific stats logic to a function reading a single counter, rather
than the whole set.
This is a preparatory change for the upcoming standard ethtool
statistics support (i.e. "eth-mac", "eth-ctrl" etc.).
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
This is more consistent with the driver's general structure.
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Eric Dumazet says:
====================
net: optmem_max changes
optmem_max default value is too small for tx zerocopy workloads.
First patch increases default from 20KB to 128 KB,
which is the value we have used for seven years.
Second patch makes optmem_max sysctl per netns.
Last patch tweaks two tests accordingly.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
/proc/sys/net/core/optmem_max is now per netns, change two tests
that were saving/changing/restoring its value on the parent netns.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
optmem_max being used in tx zerocopy,
we want to be able to control it on a netns basis.
Following patch changes two tests.
Tested:
oqq130:~# cat /proc/sys/net/core/optmem_max
131072
oqq130:~# echo 1000000 >/proc/sys/net/core/optmem_max
oqq130:~# cat /proc/sys/net/core/optmem_max
1000000
oqq130:~# unshare -n
oqq130:~# cat /proc/sys/net/core/optmem_max
131072
oqq130:~# exit
logout
oqq130:~# cat /proc/sys/net/core/optmem_max
1000000
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
For many years, /proc/sys/net/core/optmem_max default value
on a 64bit kernel has been 20 KB.
Regular usage of TCP tx zerocopy needs a bit more.
Google has used 128KB as the default value for 7 years without
any problem.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Petr Machata says:
====================
mlxsw: CFF flood mode: NVE underlay configuration
Recently, support for CFF flood mode (for Compressed FID Flooding) was
added to the mlxsw driver. The most recent patchset has a detailed coverage
of what CFF is and what has changed and how:
https://lore.kernel.org/netdev/cover.1701183891.git.petrm@nvidia.com/
In CFF flood mode, each FID allocates a handful (in our implementation two
or three) consecutive PGT entries. One entry holds the flood vector for
unknown-UC traffic, one for MC, one for BC.
To determine how to look up flood vectors, the CFF flood mode uses a
concept of flood profiles, which are IDs that reference mappings from
traffic types to offsets. In the case of CFF flood mode, the offset in
question is applied to the PGT address configured at a FID. The same
mechanism is used by NVE underlay for flooding. Again the profile ID and
the traffic type determine the offset to apply, this time to KVD address
used to look up flooding entries. Since mlxsw configures NVE underlay flood
the same regardless of traffic type, only one offset was ever needed: the
zero, which is the default, and thus no explicit configuration was needed.
Now that CFF uses profiles as well, it would be better to configure the
profile used by NVE explicitly, to make the configuration visible in the
source code.
In this patchset, add the register support (in patch #1), add a new traffic
type to refer to "any traffic at all" (in patch #2) and finally configure
the NVE profile explicitly for FIDs (in patch #3).
So far, the implicitly configured flood profile was the ID 0. With this
patchset, it changes to 3, leaving the 0 free to allow us to spot missed
configuration.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
The NVE flood profile is used for determining of offset applied to KVD
address for NVE flood. We currently do not set it, leaving it at the
default value of 0. That is not an issue: all the traffic-type-to-offset
mappings (as configured by SFFP) default to offset of 0. This is what we
need anyway, as mlxsw only allocates a single KVD entry for NVE underlay.
The field is only relevant on Spectrum-2 and above. So to be fully
consistent, we should split the existing controlled ops to Spectrum-1 and
Spectrum>1 variants, with only the latter setting the field. But that seems
like a lot of overhead for a single field whose meaning is "everything is
the default". So instead pretend that the NVE flood profile does not exist
in the controlled flood mode, like we have so far, and only set it when
flood mode is CFF.
Setting this at all serves dual purpose. First, it is now clear which
profile belongs to NVE, because in the CFF mode, we have multiple users.
This should prevent bugs in flood profile management. Second, using
specifically non-zero value means there will be no valid uses of the
profile 0, which we can therefore use as a sentinel.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
