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rtl_lps_enter() and rtl_lps_leave() are using in_interrupt() to detect
whether it is safe to acquire a mutex or if it is required to defer to a
workqueue.
The usage of in_interrupt() in drivers is phased out and Linus clearly
requested that code which changes behaviour depending on context should
either be seperated or the context be conveyed in an argument passed by the
caller, which usually knows the context.
in_interrupt() also is only partially correct because it fails to chose the
correct code path when just preemption or interrupts are disabled.
Add an argument 'may_block' to both functions and adjust the callers to
pass the context information.
The following call chains were analyzed to be safe to block:
rtl_watchdog_wq_callback()
rlf_lps_leave/enter()
rtl_op_suspend()
rtl_lps_leave()
rtl_op_bss_info_changed()
rtl_lps_leave()
rtl_op_sw_scan_start()
rtl_lps_leave()
The following call chains were analyzed to be unsafe to block:
_rtl_pci_interrupt()
_rtl_pci_rx_interrupt()
rtl_lps_leave()
_rtl_pci_interrupt()
_rtl_pci_rx_interrupt()
rtl_is_special_data()
rtl_lps_leave()
_rtl_pci_interrupt()
_rtl_pci_rx_interrupt()
rtl_is_special_data()
setup_special_tx()
rtl_lps_leave()
_rtl_pci_interrupt()
_rtl_pci_tx_isr
rtl_lps_leave()
halbtc_leave_lps()
rtl_lps_leave()
This leaves four callers of rtl_lps_enter/leave() where the analyzis
stopped dead in the maze of several nested pointer based callchains and
lack of rtlwifi hardware to debug this via tracing:
halbtc_leave_lps(), halbtc_enter_lps(), halbtc_normal_lps(),
halbtc_pre_normal_lps()
These four have been cautionally marked to be unable to block which is the
safe option, but the rtwifi wizards should be able to clarify that.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The usage of in_interrupt() in drivers in is phased out.
rtl_dbg() a printk based debug aid is using in_interrupt() in the
underlying C function _rtl_dbg_out() which is almost identical to
_rtl_dbg_print(). The only difference is the printout of in_interrupt().
The decoding of in_interrupt() as hexvalue is non-trivial and aside of
being phased out for driver usage the return value is just by chance the
masked preempt count value and not a boolean.
These home brewn printk debug aids are tedious to work with and provide
only minimal context. They should be replaced by trace_printk() or a debug
tracepoint which automatically records all context information.
To make progress on the in_interrupt() cleanup, make rtl_dbg() use
_rtl_dbg_print() and remove _rtl_dbg_out().
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
INIT_DELAYED_WORK() takes two arguments: A pointer to the delayed work and
a function reference for the callback.
The rtl code casts all function references to (void *) because the
callbacks in use are not matching the required function signature. That's
error prone and bad pratice.
Some of the callback functions are also global, but only used in a single
file.
Clean the mess up by:
- Adding the proper arguments to the callback functions and using them in
the container_of() constructs correctly which removes the hideous
container_of_dwork_rtl() macro as well.
- Removing the type cast at the initializers
- Making the unnecessary global functions static
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This addresses the following coccinelle warning:
drivers/net/wireless/realtek/rtlwifi/rtl8723be/dm.c:1155:27-47: WARNING:
Comparison of 0/1 to bool variable
drivers/net/wireless/realtek/rtlwifi/rtl8723be/dm.c:1156:3-23: WARNING:
Assignment of 0/1 to bool variable
drivers/net/wireless/realtek/rtlwifi/rtl8723be/dm.c:1159:3-23: WARNING:
Assignment of 0/1 to bool variable
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200919074437.3459305-1-yanaijie@huawei.com
This addresses the following coccinelle warning:
drivers/net/wireless/realtek/rtlwifi/rtl8821ae/dm.c:2680:27-47: WARNING:
Comparison of 0/1 to bool variable
drivers/net/wireless/realtek/rtlwifi/rtl8821ae/dm.c:2683:3-23: WARNING:
Assignment of 0/1 to bool variable
drivers/net/wireless/realtek/rtlwifi/rtl8821ae/dm.c:2686:3-23: WARNING:
Assignment of 0/1 to bool variable
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200919074428.3459234-1-yanaijie@huawei.com
This addresses the following coccinelle warning:
drivers/net/wireless/realtek/rtlwifi/rtl8192ee/dm.c:721:27-47:
WARNING: Comparison of 0/1 to bool variable
drivers/net/wireless/realtek/rtlwifi/rtl8192ee/dm.c:722:3-23: WARNING:
Assignment of 0/1 to bool variable
drivers/net/wireless/realtek/rtlwifi/rtl8192ee/dm.c:725:2-22: WARNING:
Assignment of 0/1 to bool variable
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200919074412.3459163-1-yanaijie@huawei.com
Fixes coccicheck warning:
drivers/net/wireless/realtek/rtlwifi/rtl8192de/hw.c:566:14-20: WARNING: Comparison to bool
drivers/net/wireless/realtek/rtlwifi/rtl8192de/hw.c:572:13-19: WARNING: Comparison to bool
drivers/net/wireless/realtek/rtlwifi/rtl8192de/hw.c:581:14-20: WARNING: Comparison to bool
drivers/net/wireless/realtek/rtlwifi/rtl8192de/hw.c:587:13-19: WARNING: Comparison to bool
Signed-off-by: Zheng Bin <zhengbin13@huawei.com>
Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200918102505.16036-9-zhengbin13@huawei.com
Fixes coccicheck warning:
drivers/net/wireless/realtek/rtlwifi/rtl8192ce/hw.c:616:14-20: WARNING: Comparison to bool
drivers/net/wireless/realtek/rtlwifi/rtl8192ce/hw.c:621:13-19: WARNING: Comparison to bool
drivers/net/wireless/realtek/rtlwifi/rtl8192ce/hw.c:626:14-20: WARNING: Comparison to bool
drivers/net/wireless/realtek/rtlwifi/rtl8192ce/hw.c:631:13-19: WARNING: Comparison to bool
Signed-off-by: Zheng Bin <zhengbin13@huawei.com>
Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200918102505.16036-8-zhengbin13@huawei.com
Fixes coccicheck warning:
drivers/net/wireless/realtek/rtlwifi/rtl8192cu/mac.c:161:14-17: WARNING: Comparison to bool
drivers/net/wireless/realtek/rtlwifi/rtl8192cu/mac.c:168:13-16: WARNING: Comparison to bool
drivers/net/wireless/realtek/rtlwifi/rtl8192cu/mac.c:179:14-17: WARNING: Comparison to bool
drivers/net/wireless/realtek/rtlwifi/rtl8192cu/mac.c:186:13-16: WARNING: Comparison to bool
Signed-off-by: Zheng Bin <zhengbin13@huawei.com>
Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200918102505.16036-4-zhengbin13@huawei.com
Fixes coccicheck warning:
drivers/net/wireless/realtek/rtlwifi/rtl8723ae/phy.c:191:5-13: WARNING: Comparison to bool
drivers/net/wireless/realtek/rtlwifi/rtl8723ae/phy.c:205:5-13: WARNING: Comparison to bool
drivers/net/wireless/realtek/rtlwifi/rtl8723ae/phy.c:211:5-13: WARNING: Comparison to bool
drivers/net/wireless/realtek/rtlwifi/rtl8723ae/phy.c:625:5-30: WARNING: Comparison to bool
Signed-off-by: Zheng Bin <zhengbin13@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200910141642.127006-4-zhengbin13@huawei.com
Fixes coccicheck warning:
drivers/net/wireless/realtek/rtlwifi/rtl8188ee/hw.c:777:14-20: WARNING: Comparison to bool
drivers/net/wireless/realtek/rtlwifi/rtl8188ee/hw.c:782:13-19: WARNING: Comparison to bool
drivers/net/wireless/realtek/rtlwifi/rtl8188ee/hw.c:787:14-20: WARNING: Comparison to bool
drivers/net/wireless/realtek/rtlwifi/rtl8188ee/hw.c:792:13-19: WARNING: Comparison to bool
drivers/net/wireless/realtek/rtlwifi/rtl8188ee/hw.c:871:6-33: WARNING: Comparison to bool
drivers/net/wireless/realtek/rtlwifi/rtl8188ee/hw.c:1070:5-13: WARNING: Comparison to bool
Signed-off-by: Zheng Bin <zhengbin13@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200910135917.143723-4-zhengbin13@huawei.com
Pull networking updates from David Miller:
1) Support 6Ghz band in ath11k driver, from Rajkumar Manoharan.
2) Support UDP segmentation in code TSO code, from Eric Dumazet.
3) Allow flashing different flash images in cxgb4 driver, from Vishal
Kulkarni.
4) Add drop frames counter and flow status to tc flower offloading,
from Po Liu.
5) Support n-tuple filters in cxgb4, from Vishal Kulkarni.
6) Various new indirect call avoidance, from Eric Dumazet and Brian
Vazquez.
7) Fix BPF verifier failures on 32-bit pointer arithmetic, from
Yonghong Song.
8) Support querying and setting hardware address of a port function via
devlink, use this in mlx5, from Parav Pandit.
9) Support hw ipsec offload on bonding slaves, from Jarod Wilson.
10) Switch qca8k driver over to phylink, from Jonathan McDowell.
11) In bpftool, show list of processes holding BPF FD references to
maps, programs, links, and btf objects. From Andrii Nakryiko.
12) Several conversions over to generic power management, from Vaibhav
Gupta.
13) Add support for SO_KEEPALIVE et al. to bpf_setsockopt(), from Dmitry
Yakunin.
14) Various https url conversions, from Alexander A. Klimov.
15) Timestamping and PHC support for mscc PHY driver, from Antoine
Tenart.
16) Support bpf iterating over tcp and udp sockets, from Yonghong Song.
17) Support 5GBASE-T i40e NICs, from Aleksandr Loktionov.
18) Add kTLS RX HW offload support to mlx5e, from Tariq Toukan.
19) Fix the ->ndo_start_xmit() return type to be netdev_tx_t in several
drivers. From Luc Van Oostenryck.
20) XDP support for xen-netfront, from Denis Kirjanov.
21) Support receive buffer autotuning in MPTCP, from Florian Westphal.
22) Support EF100 chip in sfc driver, from Edward Cree.
23) Add XDP support to mvpp2 driver, from Matteo Croce.
24) Support MPTCP in sock_diag, from Paolo Abeni.
25) Commonize UDP tunnel offloading code by creating udp_tunnel_nic
infrastructure, from Jakub Kicinski.
26) Several pci_ --> dma_ API conversions, from Christophe JAILLET.
27) Add FLOW_ACTION_POLICE support to mlxsw, from Ido Schimmel.
28) Add SK_LOOKUP bpf program type, from Jakub Sitnicki.
29) Refactor a lot of networking socket option handling code in order to
avoid set_fs() calls, from Christoph Hellwig.
30) Add rfc4884 support to icmp code, from Willem de Bruijn.
31) Support TBF offload in dpaa2-eth driver, from Ioana Ciornei.
32) Support XDP_REDIRECT in qede driver, from Alexander Lobakin.
33) Support PCI relaxed ordering in mlx5 driver, from Aya Levin.
34) Support TCP syncookies in MPTCP, from Flowian Westphal.
35) Fix several tricky cases of PMTU handling wrt. briding, from Stefano
Brivio.
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2056 commits)
net: thunderx: initialize VF's mailbox mutex before first usage
usb: hso: remove bogus check for EINPROGRESS
usb: hso: no complaint about kmalloc failure
hso: fix bailout in error case of probe
ip_tunnel_core: Fix build for archs without _HAVE_ARCH_IPV6_CSUM
selftests/net: relax cpu affinity requirement in msg_zerocopy test
mptcp: be careful on subflow creation
selftests: rtnetlink: make kci_test_encap() return sub-test result
selftests: rtnetlink: correct the final return value for the test
net: dsa: sja1105: use detected device id instead of DT one on mismatch
tipc: set ub->ifindex for local ipv6 address
ipv6: add ipv6_dev_find()
net: openvswitch: silence suspicious RCU usage warning
Revert "vxlan: fix tos value before xmit"
ptp: only allow phase values lower than 1 period
farsync: switch from 'pci_' to 'dma_' API
wan: wanxl: switch from 'pci_' to 'dma_' API
hv_netvsc: do not use VF device if link is down
dpaa2-eth: Fix passing zero to 'PTR_ERR' warning
net: macb: Properly handle phylink on at91sam9x
...
