The opening comment mark '/**' is used for highlighting the beginning of
kernel-doc comments.
There are some files in drivers/net/wireless/rsi which follow this syntax
in their file headers, i.e. start with '/**' like comments, which causes
unexpected warnings from kernel-doc.
E.g., running scripts/kernel-doc -none on drivers/net/wireless/rsi/rsi_coex.h
causes this warning:
"warning: wrong kernel-doc identifier on line:
* Copyright (c) 2018 Redpine Signals Inc."
Similarly for other files too.
Provide a simple fix by replacing such occurrences with general comment
format, i.e., "/*", to prevent kernel-doc from parsing it.
Signed-off-by: Aditya Srivastava <yashsri421@gmail.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210315173259.8757-1-yashsri421@gmail.com
Currently, if the user changes the pause settings, the default settings
will be restored after an interface down/up cycle, and also when
resuming from suspend. This doesn't seem to provide the best user
experience. Change this to keep user settings, and just ensure that in
jumbo mode pause is disabled.
Small drawback: When switching back mtu from jumbo to non-jumbo then
pause remains disabled (but user can enable it using ethtool).
I think that's a not too common scenario and acceptable.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
- keep the ZC code, drop the code related to reinit
net/bridge/netfilter/ebtables.c
- fix build after move to net_generic
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
gcc-11 with KASAN on 32-bit arm produces a warning about a function
that needs a lot of stack space:
drivers/net/wireless/cisco/airo.c: In function 'setup_card.constprop':
drivers/net/wireless/cisco/airo.c:3960:1: error: the frame size of 1512 bytes is larger than 1400 bytes [-Werror=frame-larger-than=]
Most of this is from a single large structure that could be dynamically
allocated or moved into the per-device structure. However, as the callers
all seem to have a fairly well bounded call chain, the easiest change
is to pull out the part of the function that needs the large variables
into a separate function and mark that as noinline_for_stack. This does
not reduce the total stack usage, but it gets rid of the warning and
requires minimal changes otherwise.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210323131634.2669455-1-arnd@kernel.org
gcc complains about undefined behavior in calling snprintf()
with the same buffer as input and output:
drivers/net/wireless/ti/wl18xx/debugfs.c: In function 'diversity_num_of_packets_per_ant_read':
drivers/net/wireless/ti/wl18xx/../wlcore/debugfs.h:86:3: error: 'snprintf' argument 4 overlaps destination object 'buf' [-Werror=restrict]
86 | snprintf(buf, sizeof(buf), "%s[%d] = %d\n", \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
87 | buf, i, stats->sub.name[i]); \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/wireless/ti/wl18xx/debugfs.c:24:2: note: in expansion of macro 'DEBUGFS_FWSTATS_FILE_ARRAY'
24 | DEBUGFS_FWSTATS_FILE_ARRAY(a, b, c, wl18xx_acx_statistics)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/wireless/ti/wl18xx/debugfs.c:159:1: note: in expansion of macro 'WL18XX_DEBUGFS_FWSTATS_FILE_ARRAY'
159 | WL18XX_DEBUGFS_FWSTATS_FILE_ARRAY(diversity, num_of_packets_per_ant,
There are probably other ways of handling the debugfs file, without
using on-stack buffers, but a simple workaround here is to remember the
current position in the buffer and just keep printing in there.
Fixes: bcca1bbdd4 ("wlcore: add debugfs macro to help print fw statistics arrays")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210323125723.1961432-1-arnd@kernel.org
Building without mesh supports shows a couple of warnings with
'make W=1':
drivers/net/wireless/marvell/libertas/main.c: In function 'lbs_start_card':
drivers/net/wireless/marvell/libertas/main.c:1068:37: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body]
1068 | lbs_start_mesh(priv);
Change the macros to use the usual "do { } while (0)" instead to shut up
the warnings and make the code a litte more robust.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210322104343.948660-4-arnd@kernel.org
If the loop fails, the "while(trials--) {" loop will exit with "trials"
set to -1. The test for that expects it to end with "trials" set to 0
so the warning message will not be printed.
Fix this by changing from a post-op to a pre-op. This does mean that
we only make 99 attempts instead of 100 but that's okay.
Fixes: f135a1571a ("wilc1000: Support chip sleep over SPI")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Ajay Singh <ajay.kathat@microchip.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/YFS5gx/gi70zlIaO@mwanda
Linux network drivers normally disallow changing the MAC address when
the interface is up. This driver has been different in that it allows
to change the MAC address *only* when it's up. This patch brings
wilc1000 behavior more in line with other network drivers. We could
have replaced wilc_set_mac_addr() with eth_mac_addr() but that would
break existing documentation on how to change the MAC address.
Likewise, return -EADDRNOTAVAIL (not -EINVAL) when the specified MAC
address is invalid or unavailable.
Signed-off-by: David Mosberger-Tang <davidm@egauge.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210303194846.1823596-1-davidm@egauge.net
The driver so far has always disabled CRC protection. This means any
data corruption that occurrs during the SPI transfers could go
undetected. This patch adds module parameters enable_crc7 and
enable_crc16 to selectively turn on CRC7 (for command transfers) and
CRC16 (for data transfers), respectively.
The default configuration remains unchanged, with both CRC7 and CRC16
off.
The performance impact of CRC was measured by running ttcp -t four
times in a row on a SAMA5 device:
CRC7 CRC16 Throughput: Standard deviation:
---- ----- ----------- -------------------
off off 1720 +/- 48 KB/s
on off 1658 +/- 58 KB/s
on on 1579 +/- 84 KB/s
Signed-off-by: David Mosberger-Tang <davidm@egauge.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210227172818.1711071-4-davidm@egauge.net
For CMD_SINGLE_READ and CMD_INTERNAL_READ, WILC may insert one or more
zero bytes between the command response and the DATA Start tag (0xf3).
This behavior appears to be undocumented in "ATWILC1000 USER GUIDE"
(https://tinyurl.com/4hhshdts) but we have observed 1-4 zero bytes
when the SPI bus operates at 48MHz and none when it operates at 1MHz.
This code is derived from the equivalent code of the wilc driver in
the linux-at91 repository.
Signed-off-by: David Mosberger-Tang <davidm@egauge.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210227172818.1711071-1-davidm@egauge.net
There are a few reasons not to dump SSIDs as-is in kernel logs:
1) they're not guaranteed to be any particular text encoding (UTF-8,
ASCII, ...) in general
2) it's somewhat redundant; the BSSID should be enough to uniquely
identify the AP/STA to which we're connecting
3) BSSIDs have an easily-recognized format, whereas SSIDs do not (they
are free-form)
4) other common drivers (e.g., everything based on mac80211) get along
just fine by only including BSSIDs when logging state transitions
Additional notes on reason #3: this is important for the
privacy-conscious, especially when providing tools that convey
kernel logs on behalf of a user -- e.g., when reporting bugs. So for
example, it's easy to automatically filter logs for MAC addresses, but
it's much harder to filter SSIDs out of unstructured text.
Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210225024454.4106485-1-briannorris@chromium.org
The signal strength of 5G is quite low, so user can't connect to an AP far
away. New parameters with new format and its parser are updated by the commit
84d26fda52 ("rtlwifi: Update 8821ae new phy parameters and its parser."), but
some parameters are missing. Use this commit to update to the novel parameters
that use new format.
Fixes: 84d26fda52 ("rtlwifi: Update 8821ae new phy parameters and its parser")
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Tested-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210219052607.7323-1-pkshih@realtek.com
Pull networking fixes from Jakub Kicinski:
"Networking fixes for 5.12-rc8, including fixes from netfilter, and
bpf. BPF verifier changes stand out, otherwise things have slowed
down.
Current release - regressions:
- gro: ensure frag0 meets IP header alignment
- Revert "net: stmmac: re-init rx buffers when mac resume back"
- ethernet: macb: fix the restore of cmp registers
Previous releases - regressions:
- ixgbe: Fix NULL pointer dereference in ethtool loopback test
- ixgbe: fix unbalanced device enable/disable in suspend/resume
- phy: marvell: fix detection of PHY on Topaz switches
- make tcp_allowed_congestion_control readonly in non-init netns
- xen-netback: Check for hotplug-status existence before watching
Previous releases - always broken:
- bpf: mitigate a speculative oob read of up to map value size by
tightening the masking window
- sctp: fix race condition in sctp_destroy_sock
- sit, ip6_tunnel: Unregister catch-all devices
- netfilter: nftables: clone set element expression template
- netfilter: flowtable: fix NAT IPv6 offload mangling
- net: geneve: check skb is large enough for IPv4/IPv6 header
- netlink: don't call ->netlink_bind with table lock held"
* tag 'net-5.12-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (52 commits)
netlink: don't call ->netlink_bind with table lock held
MAINTAINERS: update my email
bpf: Update selftests to reflect new error states
bpf: Tighten speculative pointer arithmetic mask
bpf: Move sanitize_val_alu out of op switch
bpf: Refactor and streamline bounds check into helper
bpf: Improve verifier error messages for users
bpf: Rework ptr_limit into alu_limit and add common error path
bpf: Ensure off_reg has no mixed signed bounds for all types
bpf: Move off_reg into sanitize_ptr_alu
bpf: Use correct permission flag for mixed signed bounds arithmetic
ch_ktls: do not send snd_una update to TCB in middle
ch_ktls: tcb close causes tls connection failure
ch_ktls: fix device connection close
ch_ktls: Fix kernel panic
i40e: fix the panic when running bpf in xdpdrv mode
net/mlx5e: fix ingress_ifindex check in mlx5e_flower_parse_meta
net/mlx5e: Fix setting of RS FEC mode
net/mlx5: Fix setting of devlink traps in switchdev mode
Revert "net: stmmac: re-init rx buffers when mac resume back"
...
Pull libnvdimm fixes from Dan Williams:
"The largest change is for a regression that landed during -rc1 for
block-device read-only handling. Vaibhav found a new use for the
ability (originally introduced by virtio_pmem) to call back to the
platform to flush data, but also found an original bug in that
implementation. Lastly, Arnd cleans up some compile warnings in dax.
This has all appeared in -next with no reported issues.
Summary:
- Fix a regression of read-only handling in the pmem driver
- Fix a compile warning
- Fix support for platform cache flush commands on powerpc/papr"
* tag 'libnvdimm-fixes-for-5.12-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
libnvdimm/region: Fix nvdimm_has_flush() to handle ND_REGION_ASYNC
libnvdimm: Notify disk drivers to revalidate region read-only
dax: avoid -Wempty-body warnings
Pull CXL memory class fixes from Dan Williams:
"A collection of fixes for the CXL memory class driver introduced in
this release cycle.
The driver was primarily developed on a work-in-progress QEMU
emulation of the interface and we have since found a couple places
where it hid spec compliance bugs in the driver, or had a spec
implementation bug itself.
The biggest change here is replacing a percpu_ref with an rwsem to
cleanup a couple bugs in the error unwind path during ioctl device
init. Lastly there were some minor cleanups to not export the
power-management sysfs-ABI for the ioctl device, use the proper sysfs
helper for emitting values, and prevent subtle bugs as new
administration commands are added to the supported list.
The bulk of it has appeared in -next save for the top commit which was
found today and validated on a fixed-up QEMU model.
Summary:
- Fix support for CXL memory devices with registers offset from the
BAR base.
- Fix the reporting of device capacity.
- Fix the driver commands list definition to be disconnected from the
UAPI command list.
- Replace percpu_ref with rwsem to fix initialization error path.
- Fix leaks in the driver initialization error path.
- Drop the power/ directory from CXL device sysfs.
- Use the recommended sysfs helper for attribute 'show'
implementations"
* tag 'cxl-fixes-for-5.12-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl:
cxl/mem: Fix memory device capacity probing
cxl/mem: Fix register block offset calculation
cxl/mem: Force array size of mem_commands[] to CXL_MEM_COMMAND_ID_MAX
cxl/mem: Disable cxl device power management
cxl/mem: Do not rely on device_add() side effects for dev_set_name() failures
cxl/mem: Fix synchronization mechanism for device removal vs ioctl operations
cxl/mem: Use sysfs_emit() for attribute show routines
iwlwifi patches for v5.13
* Add support for new FTM FW APIs;
* Some CSA fixes;
* Support for new HW family and other HW detection fixes;
* Robustness improvement in the HW detection code;
* One fix in PMF;
* Some new regulatory features;
* Support for passive scan in 6GHz;
* Some improvements in the sync queue implementation;
* Support for new devices;
* Support for a new FW API command version;
* Some locking fixes;
* Bump the FW API version support for AX devices;
* Some other small fixes, clean-ups and improvements.
# gpg: Signature made Wed 14 Apr 2021 12:33:29 PM EEST using RSA key ID 1A3CC5FA
# gpg: Good signature from "Luciano Roth Coelho (Luca) <luca@coelho.fi>"
# gpg: aka "Luciano Roth Coelho (Intel) <luciano.coelho@intel.com>"
mt76 patches for 5.13
* code cleanup
* mt7915/mt7615 decap offload support
* driver fixes
* mt7613 eeprom support
* MCU code unification
* threaded NAPI support
* new device IDs
* mt7921 device reset support
* rx timestamp support
# gpg: Signature made Tue 13 Apr 2021 12:11:25 AM EEST using DSA key ID 02A76EF5
# gpg: Good signature from "Felix Fietkau <nbd@nbd.name>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 75D1 1A7D 91A7 710F 4900 42EF D77D 141D 02A7 6EF5
Mat Martineau says:
====================
mptcp: Fixes and tracepoints from the mptcp tree
Here's one more batch of changes that we've tested out in the MPTCP tree.
Patch 1 makes the MPTCP KUnit config symbol more consistent with other
subsystems.
Patch 2 fixes a couple of format specifiers in pr_debug()s
Patches 3-7 add four helpful tracepoints for MPTCP.
Patch 8 is a one-line refactor to use an available helper macro.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Some of the sequence numbers are printed as the negative ones in the debug
log:
[ 46.250932] MPTCP: DSS
[ 46.250940] MPTCP: data_fin=0 dsn64=0 use_map=0 ack64=1 use_ack=1
[ 46.250948] MPTCP: data_ack=2344892449471675613
[ 46.251012] MPTCP: msk=000000006e157e3f status=10
[ 46.251023] MPTCP: msk=000000006e157e3f snd_data_fin_enable=0 pending=0 snd_nxt=2344892449471700189 write_seq=2344892449471700189
[ 46.251343] MPTCP: msk=00000000ec44a129 ssk=00000000f7abd481 sending dfrag at seq=-1658937016627538668 len=100 already sent=0
[ 46.251360] MPTCP: data_seq=16787807057082012948 subflow_seq=1 data_len=100 dsn64=1
This patch used the format specifier %u instead of %d for the unsigned int
values to fix it.
Fixes: d9ca1de8c0 ("mptcp: move page frag allocation in mptcp_sendmsg()")
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vladimir Oltean says:
====================
Fixups for XDP on NXP ENETC
After some more XDP testing on the NXP LS1028A, this is a set of 10 bug
fixes, simplifications and tweaks, ranging from addressing Toke's feedback
(the network stack can run concurrently with XDP on the same TX rings)
to fixing some OOM conditions seen under TX congestion.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Described in fd5736bf9f ("enetc: Workaround for MDIO register access
issue") is a workaround for a hardware bug that requires a register
access of the MDIO controller to never happen concurrently with a
register access of a port PF. To avoid that, a mutual exclusion scheme
with rwlocks was implemented - the port PF accessors are the 'read'
side, and the MDIO accessors are the 'write' side.
When we do XDP_REDIRECT between two ENETC interfaces, all is fine
because the MDIO lock is already taken from the NAPI poll loop.
But when the ingress interface is not ENETC, just the egress is, the
MDIO lock is not taken, so we might access the port PF registers
concurrently with MDIO, which will make the link flap due to wrong
values returned from the PHY.
To avoid this, let's just slap an enetc_lock_mdio/enetc_unlock_mdio at
the beginning and ending of enetc_xdp_xmit. The fact that the MDIO lock
is designed as a rwlock is important here, because the read side is
reentrant (that is one of the main reasons why we chose it). Usually,
the way we benefit of its reentrancy is by running the data path
concurrently on both CPUs, but in this case, we benefit from the
reentrancy by taking the lock even when the lock is already taken
(and that's the situation where ENETC is both the ingress and the egress
interface for XDP_REDIRECT, which was fine before and still is fine now).
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
If the TX ring is congested, enetc_xdp_tx() returns false for the
current XDP frame (represented as an array of software BDs).
This array of software TX BDs is constructed in enetc_rx_swbd_to_xdp_tx_swbd
from software BDs freshly cleaned from the RX ring. The issue is that we
scrub the RX software BDs too soon, more precisely before we know that
we can enqueue the TX BDs successfully into the TX ring.
If we can't enqueue them (and enetc_xdp_tx returns false), we call
enetc_xdp_drop which attempts to recycle the buffers held by the RX
software BDs. But because we scrubbed those RX BDs already, two things
happen:
(a) we leak their memory
(b) we populate the RX software BD ring with an all-zero rx_swbd
structure, which makes the buffer refill path allocate more memory.
enetc_refill_rx_ring
-> if (unlikely(!rx_swbd->page))
-> enetc_new_page
That is a recipe for fast OOM.
Fixes: 7ed2bc8007 ("net: enetc: add support for XDP_TX")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When the XDP program returns an invalid action, we should free the RX
buffer.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
