Shaul Triebitz [Fri, 31 Jan 2020 11:12:57 +0000 (13:12 +0200)]
mac80211: parse also the RSNXE IE
Parse also the RSN Extension IE when parsing the rest of the IEs.
It will be used in a later patch.
Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/20200131111300.891737-21-luca@coelho.fi
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Zvika Yehudai [Mon, 3 Feb 2020 08:08:23 +0000 (10:08 +0200)]
ieee80211: fix 'the' doubling in comments
Remove redundant 'the' where 'the the' was written.
Signed-off-by: Zvika Yehudai <zvikayeh@gmail.com>
Link: https://lore.kernel.org/r/20200203080823.24949-1-zvikayeh@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Thomas Pedersen [Tue, 14 Jan 2020 05:59:40 +0000 (21:59 -0800)]
mac80211: add ieee80211_is_any_nullfunc()
commit
08a5bdde3812 ("mac80211: consider QoS Null frames for STA_NULLFUNC_ACKED")
Fixed a bug where we failed to take into account a
nullfunc frame can be either non-QoS or QoS. It turns out
there is at least one more bug in
ieee80211_sta_tx_notify(), introduced in
commit
7b6ddeaf27ec ("mac80211: use QoS NDP for AP probing"),
where we forgot to check for the QoS variant and so
assumed the QoS nullfunc frame never went out
Fix this by adding a helper ieee80211_is_any_nullfunc()
which consolidates the check for non-QoS and QoS nullfunc
frames. Replace existing compound conditionals and add a
couple more missing checks for QoS variant.
Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
Link: https://lore.kernel.org/r/20200114055940.18502-3-thomas@adapt-ip.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
John Crispin [Fri, 6 Dec 2019 14:31:03 +0000 (15:31 +0100)]
trivial: mac80211: fix indentation
Signed-off-by: John Crispin <john@phrozen.org>
Link: https://lore.kernel.org/r/20191206143103.3645-1-john@phrozen.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
John Crispin [Mon, 29 Jul 2019 10:45:12 +0000 (12:45 +0200)]
mac80211: add support for the ADDBA extension element
HE allows peers to negotiate the aggregation fragmentation level to be used
during transmission. The level can be 1-3. The Ext element is added behind
the ADDBA request inside the action frame. The responder will then reply
with the same level or a lower one if the requested one is not supported.
This patch only handles the negotiation part as the ADDBA frames get passed
to the ATH11k firmware, which does the rest of the magic for us aswell as
generating the requests.
Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
Link: https://lore.kernel.org/r/20190729104512.27615-1-john@phrozen.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
John Crispin [Mon, 29 Jul 2019 10:23:41 +0000 (12:23 +0200)]
mac80211: fix ieee80211_he_oper_size() comment
Johannes mentioned that the comment should not reference mac80211 as other
subsystems might call the helper.
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20190729102342.8659-1-john@phrozen.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
John Crispin [Tue, 18 Jun 2019 06:19:14 +0000 (08:19 +0200)]
mac80211: HE: add Spatial Reuse element parsing support
Add support to mac80211 for parsing SPR elements as per
P802.11ax_D4.0 section 9.4.2.241.
Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
Link: https://lore.kernel.org/r/20190618061915.7102-2-john@phrozen.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
John Crispin [Sat, 13 Jul 2019 16:36:41 +0000 (18:36 +0200)]
mac80211: add support for parsing ADDBA_EXT IEs
ADDBA_EXT IEs can be used to negotiate the BA fragmentation level.
Signed-off-by: John Crispin <john@phrozen.org>
Link: https://lore.kernel.org/r/20190713163642.18491-2-john@phrozen.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Thomas Gleixner [Tue, 4 Jun 2019 08:11:33 +0000 (10:11 +0200)]
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
Based on 2 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation #
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 4122 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Ilan Peer [Wed, 29 May 2019 12:25:33 +0000 (15:25 +0300)]
ieee80211: Add a missing extended capability flag definition
Add the "OBSS Narrow Bandwidth RU In OFDMA Tolerance Support" flag
definition to the definitions of the flags covered by the Extended
Capability IE.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Chung-Hsien Hsu [Thu, 9 May 2019 09:49:06 +0000 (09:49 +0000)]
nl80211: add support for SAE authentication offload
Let drivers advertise support for station-mode SAE authentication
offload with a new NL80211_EXT_FEATURE_SAE_OFFLOAD flag.
Signed-off-by: Chung-Hsien Hsu <stanley.hsu@cypress.com>
Signed-off-by: Chi-Hsien Lin <chi-hsien.lin@cypress.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Liad Kaufman [Fri, 15 Mar 2019 15:39:07 +0000 (17:39 +0200)]
ieee80211: update HE IEs to D4.0 spec
Update the out-dated comments as well, and have them point to
the correct sections in the D4.0 spec.
Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Sara Sharon [Fri, 15 Mar 2019 15:39:03 +0000 (17:39 +0200)]
cfg80211: support non-inheritance element
Subelement profile may specify element IDs it doesn't inherit
from the management frame. Support it.
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Liad Kaufman [Wed, 6 Feb 2019 11:17:20 +0000 (13:17 +0200)]
mac80211: update HE IEs to D3.3
Update element names and new fields according to D3.3 of
the HE spec.
Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Sara Sharon [Wed, 6 Feb 2019 11:17:09 +0000 (13:17 +0200)]
mac80211: support max channel switch time element
2018 REVmd of the spec introduces the max channel switch time
element which is optionally included in beacons/probes when there
is a channel switch / extended channel switch element.
The value represents the maximum delay between the time the AP
transmitted the last beacon in current channel and the expected
time of the first beacon in the new channel, in TU.
Parse the value and pass it to the driver.
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Johannes Berg [Wed, 5 Dec 2018 10:33:34 +0000 (11:33 +0100)]
iwlwifi: mvm: support FTM initiator
Add support for FTM initiator, i.e. peer measurements with FTM
if the firmware supports FTM.
Additionally, add two defines we depend on in
include/linux/ieee80211.h.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Jouni Malinen [Mon, 11 Feb 2019 14:29:04 +0000 (16:29 +0200)]
cfg80211: Use const more consistently in for_each_element macros
Enforce the first argument to be a correct type of a pointer to struct
element and avoid unnecessary typecasts from const to non-const pointers
(the change in validate_ie_attr() is needed to make this part work). In
addition, avoid signed/unsigned comparison within for_each_element() and
mark struct element packed just in case.
Signed-off-by: Jouni Malinen <j@w1.fi>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Johannes Berg [Fri, 8 Feb 2019 16:56:33 +0000 (17:56 +0100)]
ieee80211: fix for_each_element_extid()
The data/datalen argument names cannot be used as those
are also the struct element names, fix that.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Sara Sharon [Wed, 16 Jan 2019 21:03:25 +0000 (23:03 +0200)]
mac80211: indicate support for multiple BSSID
Set multi-bssid support flags according to driver support.
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Sara Sharon [Wed, 16 Jan 2019 16:22:56 +0000 (18:22 +0200)]
mac80211: support multi-bssid
Add support for multi-bssid.
This includes:
- Parsing multi-bssid element
- Overriding DTIM values
- Taking into account in various places the inner BSSID instead of
transmitter BSSID
- Save aside some multi-bssid properties needed by drivers
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Johannes Berg [Thu, 7 Feb 2019 20:44:41 +0000 (21:44 +0100)]
cfg80211: add and use strongly typed element iteration macros
Rather than always iterating elements from frames with pure
u8 pointers, add a type "struct element" that encapsulates
the id/datalen/data format of them.
Then, add the element iteration macros
* for_each_element
* for_each_element_id
* for_each_element_extid
which take, as their first 'argument', such a structure and
iterate through a given u8 array interpreting it as elements.
While at it and since we'll need it, also add
* for_each_subelement
* for_each_subelement_id
* for_each_subelement_extid
which instead of taking data/length just take an outer element
and use its data/datalen.
Also add for_each_element_completed() to determine if any of
the loops above completed, i.e. it was able to parse all of
the elements successfully and no data remained.
Use for_each_element_id() in cfg80211_find_ie_match() as the
first user of this.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Shaul Triebitz [Sat, 15 Dec 2018 09:03:05 +0000 (11:03 +0200)]
mac80211: update HE operation fields to D3.0
HE Operation element has changed in 11ax D3.0. Update the fields
accordingly.
Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Emmanuel Grumbach [Sat, 15 Dec 2018 09:03:03 +0000 (11:03 +0200)]
ieee80211: add bits for TWT in Extended Capabilities IE
These bits are defined in ieee802.11ax to advertise support
for TWT in addition to the bits in the HE IE.
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>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Bob Copeland [Thu, 25 Oct 2018 19:48:53 +0000 (15:48 -0400)]
{nl,mac}80211: report gate connectivity in station info
Capture the current state of gate connectivity from the mesh
formation field in mesh config whenever we receive a beacon,
and report that via GET_STATION. This allows applications
doing mesh peering in userspace to make peering decisions
based on peers' current upstream connectivity.
Signed-off-by: Bob Copeland <bobcopeland@fb.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Chaitanya T K [Sat, 6 Oct 2018 17:34:59 +0000 (19:34 +0200)]
mac80211: minstrel: Enable STBC and LDPC for VHT Rates
If peer support reception of STBC and LDPC, enable them for better
performance.
Signed-off-by: Chaitanya TK <chaitanya.mgit@gmail.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Shaul Triebitz [Wed, 5 Sep 2018 05:06:08 +0000 (08:06 +0300)]
wireless: align to draft 11ax D3.0
Align to new 11ax draft D3.0. Change/add new MAC and PHY capabilities
and update drivers' 11ax capabilities and mac80211's debugfs
accordingly.
Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Johannes Berg [Fri, 31 Aug 2018 08:31:16 +0000 (11:31 +0300)]
ieee80211: add new VHT capability fields/parsing
IEEE 802.11-2016 extended the VHT capability fields to allow
indicating the number of spatial streams depending on the
actually used bandwidth, add support for decoding this.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Sara Sharon [Fri, 31 Aug 2018 08:31:09 +0000 (11:31 +0300)]
ieee80211: remove redundant leading zeroes
The defines of IEEE80211_HE_OPERATION_VHT_OPER_INFO and
IEEE80211_HE_OPERATION_MULTI_BSSID_AP have leading zeroes
that makes the number look like it is bigger than 32 bit.
This is misleading, remove it.
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Johannes Berg [Mon, 18 Jun 2018 20:39:29 +0000 (22:39 +0200)]
ieee80211: bump IEEE80211_MAX_AMPDU_BUF to support HE
Bump the IEEE80211_MAX_AMPDU_BUF size to 0x100 for HE support
and - for now - use IEEE80211_MAX_AMPDU_BUF_HT everywhere.
This is derived from my internal patch, parts of which Luca
had sent upstream.
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Luca Coelho [Sat, 9 Jun 2018 06:14:42 +0000 (09:14 +0300)]
cfg80211: Add support for HE
Add support for the HE in cfg80211 and also add userspace API to
nl80211 to send rate information out, conforming with P802.11ax_D2.0.
Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Ido Yariv <idox.yariv@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
[added missing DIV_ROUND_UP + hweight from the linux kernel]
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Sara Sharon [Mon, 19 Feb 2018 12:48:40 +0000 (14:48 +0200)]
mac80211: add get TID helper
Extracting the TID from the QOS header is common enough
to justify helper.
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Srinivas Dasari [Tue, 6 Feb 2018 14:19:35 +0000 (19:49 +0530)]
ieee80211: Increase PMK maximum length to 64 bytes
Increase the PMK maximum length to 64 bytes to accommodate
the key length used in DPP with the NIST P-521 and
Brainpool 512 curves.
Signed-off-by: Srinivas Dasari <dasaris@codeaurora.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Christian Lamparter [Fri, 5 Feb 2021 10:38:29 +0000 (11:38 +0100)]
carl9170 firmware: refresh ch9.h
This patch refreshes the upstream linux ch9.h header definitions.
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Christian Lamparter [Fri, 5 Feb 2021 09:24:38 +0000 (10:24 +0100)]
carl9170 firmware: prepare header update
This patch brings the shared firmware headers in line with the carl9170
linux kernel driver.
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Thomas Gleixner [Wed, 29 May 2019 23:57:40 +0000 (16:57 -0700)]
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 325
Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license this
program is distributed in the hope that it will be useful but
without any warranty without even the implied warranty of
merchantability or fitness for a particular purpose see the gnu
general public license for more details you should have received a
copy of the gnu general public license along with this program see
the file copying if not see http www gnu org licenses
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 1 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Armijn Hemel <armijn@tjaldur.nl>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190530000435.742096485@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Arnd Bergmann [Thu, 4 Feb 2021 16:29:17 +0000 (17:29 +0100)]
carl9170: fix struct alignment conflict
Multiple structures in the carl9170 driver have alignment
impossible alignment constraints that gcc warns about when
building with 'make W=1':
include/shared/fwcmd.h:243:2: warning: alignment 1 of 'union <anonymous>' is less than 4 [-Wpacked-not-aligned]
include/shared/wlan.h:373:1: warning: alignment 1 of 'struct ar9170_rx_frame_single' is less than 2 [-Wpacked-not-aligned]
In the carl9170_cmd structure, multiple members that have an explicit
alignment requirement of four bytes are added into a union with explicit
byte alignment, but this in turn is part of a structure that also has
four-byte alignment.
In the wlan.h header, multiple structures contain a ieee80211_hdr member
that is required to be two-byte aligned to avoid alignmnet faults when
processing network headers, but all members are forced to be byte-aligned
using the __packed tag at the end of the struct definition.
In both cases, leaving out the packing does not change the internal
layout of the structure but changes the alignment constraint of the
structure itself.
Change all affected structures to only apply packing where it does
not violate the alignment requirement of the contained structure.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Gustavo A. R. Silva [Thu, 7 May 2020 15:19:21 +0000 (10:19 -0500)]
carl9170: Replace zero-length array with flexible-array
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
Also, notice that, dynamic memory allocations won't be affected by
this change:
"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]
sizeof(flexible-array-member) triggers a warning because flexible array
members have incomplete type[1]. There are some instances of code in
which the sizeof operator is being incorrectly/erroneously applied to
zero-length arrays and the result is zero. Such instances may be hiding
some bugs. So, this work (flexible-array member conversions) will also
help to get completely rid of those sorts of issues.
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit
76497732932f ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200507151921.GA5083@embeddedor
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Christian Lamparter [Fri, 24 Jul 2020 22:47:12 +0000 (00:47 +0200)]
carl9170 toolchain: update to gcc 10.2.0
This patch also removes some of SHA256SUMS' old entries.
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Christian Lamparter [Sat, 9 May 2020 20:33:20 +0000 (22:33 +0200)]
carl9170 toolchain: update to gcc 10.1.0
This patch also removes some of SHA256SUMS' old entries.
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Christian Lamparter [Fri, 20 Mar 2020 19:27:34 +0000 (20:27 +0100)]
carl9170 toolchain: update to gcc 9.3.0
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Thomas Hebb [Mon, 9 Dec 2019 08:19:17 +0000 (00:19 -0800)]
kconfig: don't crash on NULL expressions in expr_eq()
NULL expressions are taken to always be true, as implemented by the
expr_is_yes() macro and by several other functions in expr.c. As such,
they ought to be valid inputs to expr_eq(), which compares two
expressions.
Signed-off-by: Thomas Hebb <tommyhebb@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Laura Abbott [Mon, 4 Nov 2019 22:10:08 +0000 (17:10 -0500)]
kconfig: Add option to get the full help text with listnewconfig
make listnewconfig will list the individual options that need to be set.
This is useful but there's no easy way to get the help text associated
with the options at the same time. Introduce a new targe
'make helpnewconfig' which lists the full help text of all the
new options as well. This makes it easier to automatically generate
changes that are easy for humans to review. This command also adds
markers between each option for easier parsing.
Signed-off-by: Laura Abbott <labbott@redhat.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Sun, 25 Aug 2019 17:28:33 +0000 (02:28 +0900)]
kconfig: split util.c out of parser.y
util.c exists both in scripts/kconfig/ and scripts/kconfig/lxdialog.
Prior to commit
54b8ae66ae1a ("kbuild: change *FLAGS_<basetarget>.o
to take the path relative to $(obj)"), Kbuild could not pass different
flags to source files with the same basename. Now that this issue
was solved, you can split util.c out of parser.y and compile them
independently of each other.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Christian Lamparter [Sat, 1 Feb 2020 17:54:28 +0000 (18:54 +0100)]
carl9170 toolchain: update binutils, newlib and gmp
This patch updates three toolchain sources:
binutils - 2.34
newlib - 3.3.0
gmp - 6.2.0
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Christian Lamparter [Sat, 26 Oct 2019 16:29:18 +0000 (18:29 +0200)]
carl9170 toolchain: update to binutils 2.33.1
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Christian Lamparter [Fri, 27 Sep 2019 20:49:51 +0000 (22:49 +0200)]
carl9170: config: update CMakeFiles
- parser and lexer were renamed from the previous generic zconf.*.*
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
M. Vefa Bicakci [Sat, 3 Aug 2019 10:02:12 +0000 (06:02 -0400)]
kconfig: Clear "written" flag to avoid data loss
Prior to this commit, starting nconfig, xconfig or gconfig, and saving
the .config file more than once caused data loss, where a .config file
that contained only comments would be written to disk starting from the
second save operation.
This bug manifests itself because the SYMBOL_WRITTEN flag is never
cleared after the first call to conf_write, and subsequent calls to
conf_write then skip all of the configuration symbols due to the
SYMBOL_WRITTEN flag being set.
This commit resolves this issue by clearing the SYMBOL_WRITTEN flag
from all symbols before conf_write returns.
Fixes: 8e2442a5f86e ("kconfig: fix missing choice values in auto.conf")
Cc: linux-stable <stable@vger.kernel.org> # 4.19+
Signed-off-by: M. Vefa Bicakci <m.v.b@runbox.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Fri, 12 Jul 2019 06:07:09 +0000 (15:07 +0900)]
kconfig: fix missing choice values in auto.conf
Since commit
00c864f8903d ("kconfig: allow all config targets to write
auto.conf if missing"), Kconfig creates include/config/auto.conf in the
defconfig stage when it is missing.
Joonas Kylmälä reported incorrect auto.conf generation under some
circumstances.
To reproduce it, apply the following diff:
| --- a/arch/arm/configs/imx_v6_v7_defconfig
| +++ b/arch/arm/configs/imx_v6_v7_defconfig
| @@ -345,14 +345,7 @@ CONFIG_USB_CONFIGFS_F_MIDI=y
| CONFIG_USB_CONFIGFS_F_HID=y
| CONFIG_USB_CONFIGFS_F_UVC=y
| CONFIG_USB_CONFIGFS_F_PRINTER=y
| -CONFIG_USB_ZERO=m
| -CONFIG_USB_AUDIO=m
| -CONFIG_USB_ETH=m
| -CONFIG_USB_G_NCM=m
| -CONFIG_USB_GADGETFS=m
| -CONFIG_USB_FUNCTIONFS=m
| -CONFIG_USB_MASS_STORAGE=m
| -CONFIG_USB_G_SERIAL=m
| +CONFIG_USB_FUNCTIONFS=y
| CONFIG_MMC=y
| CONFIG_MMC_SDHCI=y
| CONFIG_MMC_SDHCI_PLTFM=y
And then, run:
$ make ARCH=arm mrproper imx_v6_v7_defconfig
You will see CONFIG_USB_FUNCTIONFS=y is correctly contained in the
.config, but not in the auto.conf.
Please note drivers/usb/gadget/legacy/Kconfig is included from a choice
block in drivers/usb/gadget/Kconfig. So USB_FUNCTIONFS is a choice value.
This is probably a similar situation described in commit
beaaddb62540
("kconfig: tests: test defconfig when two choices interact").
When sym_calc_choice() is called, the choice symbol forgets the
SYMBOL_DEF_USER unless all of its choice values are explicitly set by
the user.
The choice symbol is given just one chance to recall it because
set_all_choice_values() is called if SYMBOL_NEED_SET_CHOICE_VALUES
is set.
When sym_calc_choice() is called again, the choice symbol forgets it
forever, since SYMBOL_NEED_SET_CHOICE_VALUES is a one-time aid.
Hence, we cannot call sym_clear_all_valid() again and again.
It is crazy to repeat set and unset of internal flags. However, we
cannot simply get rid of "sym->flags &= flags | ~SYMBOL_DEF_USER;"
Doing so would re-introduce the problem solved by commit
5d09598d488f
("kconfig: fix new choices being skipped upon config update").
To work around the issue, conf_write_autoconf() stopped calling
sym_clear_all_valid().
conf_write() must be changed accordingly. Currently, it clears
SYMBOL_WRITE after the symbol is written into the .config file. This
is needed to prevent it from writing the same symbol multiple times in
case the symbol is declared in two or more locations. I added the new
flag SYMBOL_WRITTEN, to track the symbols that have been written.
Anyway, this is a cheesy workaround in order to suppress the issue
as far as defconfig is concerned.
Handling of choices is totally broken. sym_clear_all_valid() is called
every time a user touches a symbol from the GUI interface. To reproduce
it, just add a new symbol drivers/usb/gadget/legacy/Kconfig, then touch
around unrelated symbols from menuconfig. USB_FUNCTIONFS will disappear
from the .config file.
I added the Fixes tag since it is more fatal than before. But, this
has been broken since long long time before, and still it is.
We should take a closer look to fix this correctly somehow.
Fixes: 00c864f8903d ("kconfig: allow all config targets to write auto.conf if missing")
Cc: linux-stable <stable@vger.kernel.org> # 4.19+
Reported-by: Joonas Kylmälä <joonas.kylmala@iki.fi>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Tested-by: Joonas Kylmälä <joonas.kylmala@iki.fi>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Thu, 11 Jul 2019 07:33:17 +0000 (16:33 +0900)]
kconfig: remove meaningless if-conditional in conf_read()
sym_is_choice(sym) has already been checked by previous if-block:
if (sym_is_choice(sym) || (sym->flags & SYMBOL_NO_WRITE))
continue;
Hence, the following code is redundant, and the comment is misleading:
if (!sym_is_choice(sym))
continue;
/* fall through */
It always takes 'continue', never falls though.
Clean up the dead code.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Marco Ammon [Thu, 4 Jul 2019 10:50:41 +0000 (12:50 +0200)]
kconfig: Fix spelling of sym_is_changable
There is a spelling mistake in "changable", it is corrected to
"changeable" and all call sites are updated accordingly.
Signed-off-by: Marco Ammon <marco.ammon@fau.de>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Mauro Carvalho Chehab [Wed, 12 Jun 2019 17:52:48 +0000 (14:52 -0300)]
docs: kbuild: convert docs to ReST and rename to *.rst
The kbuild documentation clearly shows that the documents
there are written at different times: some use markdown,
some use their own peculiar logic to split sections.
Convert everything to ReST without affecting too much
the author's style and avoiding adding uneeded markups.
The conversion is actually:
- add blank lines and identation in order to identify paragraphs;
- fix tables markups;
- add some lists markups;
- mark literal blocks;
- adjust title markups.
At its new index.rst, let's add a :orphan: while this is not linked to
the main index.rst file, in order to avoid build warnings.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Mon, 27 May 2019 14:37:23 +0000 (23:37 +0900)]
kconfig: add static qualifier to expand_string()
Now expand_string() is only used in preprocess.c
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Mon, 27 May 2019 14:37:22 +0000 (23:37 +0900)]
kconfig: require the argument of --defconfig
Currently, the argument for --defconfig is optional. If the argument
is not passed, the hard-coded default arch/$(ARCH)/defconfig is used.
It no longer happens in Linux since the last users of the default are
gone by the following commits:
- Commit
f3e20ad67b4c ("s390: move arch/s390/defconfig to
arch/s390/configs/defconfig")
- Commit
986a13769c4b ("alpha: move arch/alpha/defconfig to
arch/alpha/configs/defconfig")
I want to kill the Linux-specific directory path embedded in the
Kconfig binary.
The --savedefconfig (reverse operation of --defconfig) requires an
argument, so it should not hurt to do likewise for --defconfig.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Alexander Popov [Fri, 17 May 2019 19:42:22 +0000 (22:42 +0300)]
kconfig: Terminate menu blocks with a comment in the generated config
Currently menu blocks start with a pretty header but end with nothing in
the generated config. So next config options stick together with the
options from the menu block.
Let's terminate menu blocks in the generated config with a comment and
a newline if needed. Example:
...
CONFIG_BPF_STREAM_PARSER=y
CONFIG_NET_FLOW_LIMIT=y
#
# Network testing
#
CONFIG_NET_PKTGEN=y
CONFIG_NET_DROP_MONITOR=y
# end of Network testing
# end of Networking options
CONFIG_HAMRADIO=y
...
Signed-off-by: Alexander Popov <alex.popov@linux.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Sun, 12 May 2019 16:00:53 +0000 (01:00 +0900)]
kconfig: make conf_get_autoconfig_name() static
This is only used in confdata.c
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Jacob Garber [Fri, 10 May 2019 19:28:52 +0000 (13:28 -0600)]
kconfig: use snprintf for formatting pathnames
Valid pathnames will never exceed PATH_MAX, but these file names
are unsanitized and can cause buffer overflow if set incorrectly.
Use snprintf to avoid this. This was flagged during a Coverity scan
of the coreboot project, which also uses kconfig for its build system.
Signed-off-by: Jacob Garber <jgarber1@ualberta.ca>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Fri, 10 May 2019 16:56:48 +0000 (01:56 +0900)]
kconfig: remove useless NULL pointer check in conf_write_dep()
conf_write_dep() has just one caller:
conf_write_dep("include/config/auto.conf.cmd");
"name" always points to a valid string.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Fri, 10 May 2019 16:56:01 +0000 (01:56 +0900)]
kconfig: make parent directories for the saved .config as needed
With menuconfig / nconfig, users can input any file path from the
"Save" menu, but it fails if the parent directory does not exist.
Why not create the parent directory automatically. I think this is
a user-friendly behavior.
I changed the error messages in menuconfig / nconfig.
"Nonexistent directory" is no longer the most likely reason of the
failure. Perhaps, the user specified the existing directory, or
attempted to write to the location without write permission.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Fri, 10 May 2019 06:12:05 +0000 (15:12 +0900)]
kconfig: do not write .config if the content is the same
Kconfig updates the .config when it exits even if its content is
exactly the same as before. Since its timestamp becomes newer than
that of other build artifacts, additional processing is invoked,
which is annoying.
- syncconfig is invoked to update include/config/auto.conf, etc.
- kernel/configs.o is recompiled if CONFIG_IKCONFIG is enabled,
then vmlinux is relinked as well.
If the .config is not changed at all, we do not have to even
touch it. Just bail out showing "No change to .config".
$ make allmodconfig
config/conf --allmodconfig Kconfig
#
# configuration written to .config
#
$ make allmodconfig
config/conf --allmodconfig Kconfig
#
# No change to .config
#
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Fri, 10 May 2019 06:12:04 +0000 (15:12 +0900)]
kconfig: do not accept a directory for configuration output
Currently, conf_write() can be called with a directory name instead
of a file name. As far as I see, this can happen for menuconfig,
nconfig, gconfig.
If it is given with a directory path, conf_write() kindly appends
getenv("KCONFIG_CONFIG"), but this ends up with hacky dir/basename
handling, and screwed up in corner-cases like "what if KCONFIG_CONFIG
is an absolute path?" as discussed before:
https://patchwork.kernel.org/patch/
9910037/
Since conf_write() is already messed up, I'd say "do not do it".
Please pass a file path all the time. If a directory path is specified
for the configuration output, conf_write() will simply error out.
Now that the tmp file is created in the same directory as the .config,
the previously reported "what if KCONFIG_CONFIG points to a different
file system?" has been solved.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Nicolas Porcel <nicolasporcel06@gmail.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Fri, 22 Feb 2019 07:40:11 +0000 (16:40 +0900)]
kbuild: move ".config not found!" message from Kconfig to Makefile
If you run "make" in a pristine source tree, currently Kbuild will
start to build Kconfig to let it show the error message.
It would be more straightforward to check it in Makefile and let
it fail immediately.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Thu, 24 Jan 2019 10:47:30 +0000 (19:47 +0900)]
kconfig: rename zconf.y to parser.y
Use a more logical name.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Thu, 24 Jan 2019 10:47:29 +0000 (19:47 +0900)]
kconfig: rename zconf.l to lexer.l
Use a more logical name.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Christian Lamparter [Sun, 18 Aug 2019 19:17:06 +0000 (21:17 +0200)]
carl9170 toolchain: update to gcc 9.2.0
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Christian Lamparter [Sun, 5 May 2019 09:17:45 +0000 (11:17 +0200)]
carl9170 toolchain: update to gcc 9.1.0
gcc will now be warning about conflicting alignments
when a pointer from a packed structure is in play.
the include headers will likely need further fixes, but
we can wait until the linux kernel folks know how they
want to deal with ieee80211.h.
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Christian Lamparter [Mon, 4 Mar 2019 11:50:12 +0000 (12:50 +0100)]
carl9170: fix printf.c file permission
This was set to executable.
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Christian Lamparter [Mon, 4 Mar 2019 11:53:02 +0000 (12:53 +0100)]
carl9170 firmware: config: fix missing lkc_proto.h update
Commit:
2396dc74a1e0 ("kconfig: allow all config targets to write auto.conf if missing")
included a hunk for lkc_proto.h that was dropped.
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Christian Lamparter [Mon, 4 Mar 2019 11:21:31 +0000 (12:21 +0100)]
carl9170: config: re-add config.cmake
This patch re-adds the custom config.cmake support that was
removed by the cleanup patch.
Reported-by: Jason Self <j@jxself.org>
Fixes: 786134321b6e ("carl9170: config: fix patching errors and update CMakeFiles")
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Christian Lamparter [Sun, 24 Feb 2019 20:45:48 +0000 (21:45 +0100)]
carl9170 toolchain: update to gcc 8.3.0
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Fri, 21 Dec 2018 06:23:02 +0000 (15:23 +0900)]
kconfig: remove unused "file" field of yylval union
This has never been used.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Fri, 21 Dec 2018 08:33:05 +0000 (17:33 +0900)]
kconfig: split the lexer out of zconf.y
Compile zconf.lex.c independently of the other files.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Christian Lamparter [Sun, 10 Feb 2019 21:53:14 +0000 (22:53 +0100)]
carl9170: config: fix patching errors and update CMakeFiles
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Fri, 21 Dec 2018 08:33:04 +0000 (17:33 +0900)]
kconfig: split some C files out of zconf.y
I want to compile each C file independently instead of including all
of them from zconf.y.
Split out confdata.c, expr.c, symbol.c, and preprocess.c .
These are low-hanging fruits.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Tue, 18 Dec 2018 12:13:35 +0000 (21:13 +0900)]
kconfig: convert to SPDX License Identifier
All files in lxdialog/ are licensed under GPL-2.0+, and the rest are
under GPL-2.0. I added GPL-2.0 tags to test scripts in tests/.
Documentation/process/license-rules.rst does not suggest anything
about the flex/bison files. Because flex does not accept the C++
comment style at the very top of a file, I used the C style for
zconf.l, and so for zconf.y for consistency.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Tue, 11 Dec 2018 11:01:10 +0000 (20:01 +0900)]
kconfig: remove keyword lookup table entirely
Commit
7a88488bbc23 ("[PATCH] kconfig: use gperf for kconfig keywords")
introduced gperf for the keyword lookup.
Then, commit
bb3290d91695 ("Remove gperf usage from toolchain") killed
the gperf use. As a result, the linear keyword search was left behind.
If we do not use gperf, there is no reason to have the separate table
of the keywords. Move all keywords back to the lexer.
I also refactored the lexer to remove the COMMAND and PARAM states.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Tue, 11 Dec 2018 11:01:09 +0000 (20:01 +0900)]
kconfig: update current_pos in the second lexer
To simplify the generated lexer, let the hand-made lexer update the
file name and line number for the parser.
I tested this with DEBUG_PARSE, and confirmed the same file names
and line numbers were dumped.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Tue, 11 Dec 2018 11:01:08 +0000 (20:01 +0900)]
kconfig: switch to ASSIGN_VAL state in the second lexer
To simplify the generated lexer, switch to the ASSIGN_VAL state in
the hand-made lexer.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Tue, 11 Dec 2018 11:01:07 +0000 (20:01 +0900)]
kconfig: stop associating kconf_id with yylval
The lexer has conventionally associated kconf_id data with yylval
to carry additional information to the parser.
No token is relying on this any more.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Tue, 11 Dec 2018 11:01:06 +0000 (20:01 +0900)]
kconfig: refactor end token rules
T_ENDMENU, T_ENDCHOICE, T_ENDIF are the last users of kconf_id
associated with yylval. Refactor them to not use it.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Tue, 11 Dec 2018 11:01:05 +0000 (20:01 +0900)]
kconfig: stop supporting '.' and '/' in unquoted words
In my understanding, special characters such as '.' and '/' are
supported in unquoted words to use bare file paths in the "source"
statement.
With the previous commit surrounding all file paths with double
quotes, we can drop this.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Tue, 11 Dec 2018 11:01:02 +0000 (20:01 +0900)]
kconfig: use T_WORD instead of T_VARIABLE for variables
There is no grammatical ambiguity by using T_WORD for variables.
The parser can distinguish variables from symbols from the context.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Tue, 11 Dec 2018 11:01:01 +0000 (20:01 +0900)]
kconfig: use specific tokens instead of T_ASSIGN for assignments
Currently, the lexer returns T_ASSIGN for all of =, :=, and +=
associating yylval with the flavor.
I want to make the generated lexer as simple as possible. So, the
lexer should convert keywords to tokens without thinking about the
meaning.
= -> T_EQUAL
:= -> T_COLON_EQUAL
+= -> T_PLUS_EQUAL
Unfortunately, Kconfig uses = instead of == for the equal operator.
So, the same token T_EQUAL is used for assignment and comparison.
The parser can still distinguish them from the context.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Tue, 11 Dec 2018 11:01:00 +0000 (20:01 +0900)]
kconfig: refactor scanning and parsing "option" properties
For the keywords "modules", "defconfig_list", and "allnoconfig_y",
the lexer should pass specific tokens instead of generic T_WORD.
This simplifies both the lexer and the parser.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Tue, 11 Dec 2018 11:00:59 +0000 (20:00 +0900)]
kconfig: use distinct tokens for type and default properties
This commit removes kconf_id::stype to prepare for the entire
removal of kconf_id.c
To simplify the lexer, I want keywords straight-mapped to tokens.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Tue, 11 Dec 2018 11:00:58 +0000 (20:00 +0900)]
kconfig: remove redundant token defines
These are already defined as %left.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Tue, 11 Dec 2018 11:00:57 +0000 (20:00 +0900)]
kconfig: rename depends_list to comment_option_list
Now the comment_stmt is the only user of depends_list. Rename it to
comment_option_list
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Tue, 11 Dec 2018 11:00:56 +0000 (20:00 +0900)]
kconfig: loosen the order of "visible" and "depends on" in menu entry
Currently, "visible" and "depends on", if defined in a menu entry,
must appear in that order.
The real example is in drivers/media/tuners/Kconfig:
menu "Customize TV tuners"
visible if <expr1>
depends on <expr2>
... is fine, but you cannot change the property order like this:
menu "Customize TV tuners"
depends on <expr2>
visible if <expr1>
Kconfig does not require a specific order of properties. In this case,
menu_add_visibility(() and menu_add_dep() are orthogonal.
Loosen this unreasonable restriction.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Tue, 11 Dec 2018 11:00:55 +0000 (20:00 +0900)]
kconfig: remove redundant menu_block rule
The code block surrounded by "menu" ... "endmenu" is stmt_list.
Remove the redundant menu_block symbol entirely.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Tue, 11 Dec 2018 11:00:54 +0000 (20:00 +0900)]
kconfig: remove redundant if_block rule
The code block surrounded by "if" ... "endif" is stmt_list.
Remove the redundant if_block symbol entirely.
Remove "stmt_list: stmt_list end" rule as well since it would
obviously cause conflicts.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Tue, 11 Dec 2018 11:00:53 +0000 (20:00 +0900)]
kconfig: remove grammatically ambiguous option_error
This commit decreases 6 shift/reduce conflicts, and finally achieves
conflict-free parser.
Since Kconfig has no terminator for a config block, detecting the end
of config_stmt is not easy.
For example, there are two ways for handling the error in the following
code:
1 config FOO
2 =
[A] Print "unknown option" error, assuming the line 2 is a part of
config_option_list
[B] Print "invalid statement", assuming the line 1 is reduced into
a config_stmt by itself
Bison actually chooses [A] because it performs the shift rather than
the reduction where both are possible.
However, there is no reason to choose one over the other.
Let's remove the option_error, and let it fall back to [B].
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Tue, 11 Dec 2018 11:00:52 +0000 (20:00 +0900)]
kconfig: remove grammatically ambiguous "unexpected option" diagnostic
This commit decreases 15 shift/reduce conflicts.
The location of this error recovery is ambiguous.
For example, there are two ways to interpret the following code:
1 config FOO
2 bool "foo"
[A] Both lines are reduced together into a config_stmt.
[B] The only line 1 is reduced into a config_stmt, and the line 2
matches to "option_name error T_EOL"
Of course, we expect [A], but [B] could be grammatically possible.
Kconfig has no terminator for a config block. So, we cannot detect its
end until we see a non-property keyword. People often insert a blank
line between two config blocks, but it is just a coding convention.
Blank lines are actually allowed anywhere in Kconfig files.
The real error is when a property keyword appears right after "endif",
"endchoice", "endmenu", "source", "comment", or variable assignment.
Instead of fixing the grammatical ambiguity, I chose to simply remove
this error recovery.
The difference is
unexpected option "bool"
... is turned into a more generic message:
invalid statement
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Tue, 11 Dec 2018 11:00:51 +0000 (20:00 +0900)]
kconfig: warn no new line at end of file
It would be nice to warn if a new line is missing at end of file.
We could do this by checkpatch.pl for arbitrary files, but new line
is rather essential as a statement terminator in Kconfig.
The warning message looks like this:
kernel/Kconfig.preempt:60:warning: no new line at end of file
Currently, kernel/Kconfig.preempt is the only file with no new line
at end of file. Fix it.
I know there are some false negative cases. For example, no warning
is displayed when the last line contains some whitespaces/comments,
but no new line. Yet, this commit works well for most cases.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Tue, 11 Dec 2018 11:00:50 +0000 (20:00 +0900)]
kconfig: clean up EOF handling in the lexer
A new file should always start in the INITIAL state.
When the lexer bumps into EOF, the lexer must get back to the INITIAL
state anyway. Remove the redundant <<EOF>> pattern in the PARAM state.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Tue, 11 Dec 2018 11:00:49 +0000 (20:00 +0900)]
kconfig: fix ambiguous grammar in terms of new lines
This commit decreases 8 shift/reduce conflicts.
A certain amount of grammatical ambiguity comes from how to reduce
excessive T_EOL tokens.
Let's take a look at the example code below:
1 config A
2 bool "a"
3
4 depends on B
5
6 config B
7 def_bool y
The line 3 is melt into "config_option_list", but the line 5 can be
either a part of "config_option_list" or "common_stmt" by itself.
Currently, the lexer converts '\n' to T_EOL verbatim. In Kconfig,
a new line works as a statement terminator, but new lines in empty
lines are not critical since empty lines (or lines that contain only
whitespaces/comments) are just no-op.
If the lexer simply discards no-op lines, the parser will not be
bothered by excessive T_EOL tokens.
Of course, this means we are shifting the complexity from the parser
to the lexer, but it is much easier than tackling on shift/reduce
conflicts.
I introduced the second stage lexer to tweak the behavior.
Discard T_EOL if the previous token is T_EOL or T_HELPTEXT.
Two T_EOL tokens in a row is meaningless. T_HELPTEXT is a special
token that is reduced without T_EOL.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Tue, 11 Dec 2018 11:00:48 +0000 (20:00 +0900)]
kconfig: refactor pattern matching in STRING state
Here, similar matching patters are duplicated in order to look ahead
the '\n' character. If the next character is '\n', the lexer returns
T_WORD_QUOTE because it must be prepared to return T_EOL at the next
match.
Use unput('\n') trick to reduce the code duplication.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Tue, 11 Dec 2018 11:00:47 +0000 (20:00 +0900)]
kconfig: remove unneeded pattern matching to whitespaces
Whitespaces are consumed in the COMMAND state anyway.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Tue, 11 Dec 2018 11:00:46 +0000 (20:00 +0900)]
kconfig: require T_EOL to reduce visible statement
All line-oriented statements should be reduced when seeing a T_EOL
token. I guess missing T_EOL for the "visible" statement is just a
mistake. This commit decreases one shift/reduce conflict.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Tue, 11 Dec 2018 11:00:45 +0000 (20:00 +0900)]
kconfig: fix memory leak when EOF is encountered in quotation
An unterminated string literal followed by new line is passed to the
parser (with "multi-line strings not supported" warning shown), then
handled properly there.
On the other hand, an unterminated string literal at end of file is
never passed to the parser, then results in memory leak.
[Test Code]
----------(Kconfig begin)----------
source "Kconfig.inc"
config A
bool "a"
-----------(Kconfig end)-----------
--------(Kconfig.inc begin)--------
config B
bool "b\No new line at end of file
---------(Kconfig.inc end)---------
[Summary from Valgrind]
Before the fix:
LEAK SUMMARY:
definitely lost: 16 bytes in 1 blocks
...
After the fix:
LEAK SUMMARY:
definitely lost: 0 bytes in 0 blocks
...
Eliminate the memory leak path by handling this case. Of course, such
a Kconfig file is wrong already, so I will add an error message later.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Tue, 11 Dec 2018 11:00:44 +0000 (20:00 +0900)]
kconfig: fix file name and line number of warn_ignored_character()
Currently, warn_ignore_character() displays invalid file name and
line number.
The lexer should use current_file->name and yylineno, while the parser
should use zconf_curname() and zconf_lineno().
This difference comes from that the lexer is always going ahead
of the parser. The parser needs to look ahead one token to make a
shift/reduce decision, so the lexer is requested to scan more text
from the input file.
This commit fixes the warning message from warn_ignored_character().
[Test Code]
----(Kconfig begin)----
/
-----(Kconfig end)-----
[Output]
Before the fix:
<none>:0:warning: ignoring unsupported character '/'
After the fix:
Kconfig:1:warning: ignoring unsupported character '/'
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Masahiro Yamada [Fri, 30 Nov 2018 09:15:52 +0000 (18:15 +0900)]
kconfig: remove k_invalid from expr_parse_string() return type
The only possibility of k_invalid being returned was when
expr_parse_sting() parsed S_OTHER type symbol. This actually never
happened, and this is even clearer since S_OTHER has gone.
Clean up unreachable code.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>