BMC/Intel-BMC/linux.git/drivers/net/wireless/mediatek, branch dev-4.17

mt76: add rcu locking around tx scheduling

2018-08-03T05:47:57+00:00

[ Upstream commit 1d868b70e06a2319fdda46cc46ec7c6762557543 ] Fixes a reported lockdep error in mac80211: [ 179.867321] ============================= [ 179.871510] WARNING: suspicious RCU usage [ 179.875528] 4.14.32 #0 Not tainted [ 179.878924] ----------------------------- [ 179.882981] backports-2017-11-01/net/mac80211/tx.c:594 suspicious rcu_dereference_check() usage! [ 179.891785] [ 179.891785] other info that might help us debug this: [ 179.891785] [ 179.899824] [ 179.899824] rcu_scheduler_active = 2, debug_locks = 1 [ 179.906343] 2 locks held by ksoftirqd/0/7: [ 179.910479] #0: (&(&q->lock)->rlock){+.-.}, at: [<86b207a4>] mt76_dma_tx_cleanup+0x64/0x354 [mt76] [ 179.919734] #1: (&(&fq->lock)->rlock){+.-.}, at: [<87238410>] ieee80211_tx_dequeue+0x54/0xc3c [mac80211] [ 179.929890] [ 179.929890] stack backtrace: [ 179.934257] CPU: 0 PID: 7 Comm: ksoftirqd/0 Not tainted 4.14.32 #0 [ 179.940421] Stack : 00000000 00000000 00000000 00000000 80e0fce2 00000036 00000000 00000000 [ 179.948864] 87c3d24c 80696377 8061039c 00000000 00000007 00000001 87c5db78 6534689d [ 179.957306] 00000000 00000000 80e10000 87c5da74 00000001 0000015a 00000007 00000000 [ 179.965748] 00000000 806a0000 000e4171 00000000 00000000 00000000 ffffffff 00000001 [ 179.974189] 806c0000 8692b240 86b000d0 87316fe4 00000001 802c9a68 00000000 80700000 [ 179.982632] ... [ 179.985104] Call Trace: [ 179.987582] [<80010a48>] show_stack+0x58/0x100 [ 179.992040] [<804c2c58>] dump_stack+0xe8/0x170 [ 179.996868] [<87234a04>] ieee80211_tx_h_select_key+0xa8/0x5b8 [mac80211] [ 180.004299] [<87238d44>] ieee80211_tx_dequeue+0x988/0xc3c [mac80211] [ 180.011048] [<86b230dc>] mt76_txq_schedule+0x110/0x3a4 [mt76] [ 180.016821] [<86b209d0>] mt76_dma_tx_cleanup+0x290/0x354 [mt76] [ 180.022777] [<86be2e60>] mt7603_tx_tasklet+0x40/0x6c [mt7603e] [ 180.028637] [<80037058>] tasklet_action+0x110/0x1ec [ 180.033532] [<804e1dac>] __do_softirq+0x164/0x35c [ 180.038235] [<80037174>] run_ksoftirqd+0x40/0x84 [ 180.042870] [<800580c8>] smpboot_thread_fn+0x1a8/0x1d8 [ 180.048023] [<800542e8>] kthread+0x130/0x144 [ 180.052297] [<8000b1f8>] ret_from_kernel_thread+0x14/0x1c Signed-off-by: Felix Fietkau Signed-off-by: Kalle Valo Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

mt76x2: fix avg_rssi estimation

2018-08-03T05:47:56+00:00

[ Upstream commit c990affd5abce1f338ac52539e092dad04647fb6 ] Add leftover filter coefficients in IIR rssi estimation Fixes: 7bc04215a66b ("mt76: add driver code for MT76x2e") Signed-off-by: Lorenzo Bianconi Acked-by: Felix Fietkau Signed-off-by: Kalle Valo Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

mt76x2: apply coverage class on slot time too

2018-08-03T05:47:46+00:00

[ Upstream commit 0d45d3fe42efc76b6c4f5a62f8d110c7a2e6f83f ] According to 802.11-2007 17.3.8.6 (slot time), the slot time should be increased by 3 us * coverage class. Taking into account coverage class in slot time configuration allows to increase by an order of magnitude the throughput on a 4Km link in a noisy environment Tested-by: Luca Bisti Tested-by: Gaetano Catalli Signed-off-by: Lorenzo Bianconi Acked-by: Felix Fietkau Signed-off-by: Kalle Valo Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

Merge tag 'driver-core-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2018-04-05T02:41:45+00:00

Pull driver core updates from Greg KH: "Here is the "big" set of driver core patches for 4.17-rc1. There's really not much here, just a bunch of firmware code refactoring from Luis as he attempts to wrangle that codebase into something that is managable, along with a bunch of userspace tests for it. Other than that, a handful of small bugfixes and reverts of things that didn't work out. Full details are in the shortlog, it's not all that much. All of these have been in linux-next for a while with no reported issues" * tag 'driver-core-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (30 commits) drivers: base: remove check for callback in coredump_store() mt7601u: use firmware_request_cache() to address cache on reboot firmware: add firmware_request_cache() to help with cache on reboot firmware: fix typo on pr_info_once() when ignore_sysfs_fallback is used firmware: explicitly include vmalloc.h firmware: ensure the firmware cache is not used on incompatible calls test_firmware: modify custom fallback tests to use unique files firmware: add helper to check to see if fw cache is setup firmware: fix checking for return values for fw_add_devm_name() rename: _request_firmware_load() fw_load_sysfs_fallback() test_firmware: test three firmware kernel configs using a proc knob test_firmware: expand on library with shared helpers firmware: enable to force disable the fallback mechanism at run time firmware: enable run time change of forcing fallback loader firmware: move firmware loader into its own directory firmware: split firmware fallback functionality into its own file firmware: move loading timeout under struct firmware_fallback_config firmware: use helpers for setting up a temporary cache timeout firmware: simplify CONFIG_FW_LOADER_USER_HELPER_FALLBACK further drivers: base: add description for .coredump() callback ...

Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

2018-04-01T03:33:04+00:00

Daniel Borkmann says: ==================== pull-request: bpf-next 2018-03-31 The following pull-request contains BPF updates for your *net-next* tree. The main changes are: 1) Add raw BPF tracepoint API in order to have a BPF program type that can access kernel internal arguments of the tracepoints in their raw form similar to kprobes based BPF programs. This infrastructure also adds a new BPF_RAW_TRACEPOINT_OPEN command to BPF syscall which returns an anon-inode backed fd for the tracepoint object that allows for automatic detach of the BPF program resp. unregistering of the tracepoint probe on fd release, from Alexei. 2) Add new BPF cgroup hooks at bind() and connect() entry in order to allow BPF programs to reject, inspect or modify user space passed struct sockaddr, and as well a hook at post bind time once the port has been allocated. They are used in FB's container management engine for implementing policy, replacing fragile LD_PRELOAD wrapper intercepting bind() and connect() calls that only works in limited scenarios like glibc based apps but not for other runtimes in containerized applications, from Andrey. 3) BPF_F_INGRESS flag support has been added to sockmap programs for their redirect helper call bringing it in line with cls_bpf based programs. Support is added for both variants of sockmap programs, meaning for tx ULP hooks as well as recv skb hooks, from John. 4) Various improvements on BPF side for the nfp driver, besides others this work adds BPF map update and delete helper call support from the datapath, JITing of 32 and 64 bit XADD instructions as well as offload support of bpf_get_prandom_u32() call. Initial implementation of nfp packet cache has been tackled that optimizes memory access (see merge commit for further details), from Jakub and Jiong. 5) Removal of struct bpf_verifier_env argument from the print_bpf_insn() API has been done in order to prepare to use print_bpf_insn() soon out of perf tool directly. This makes the print_bpf_insn() API more generic and pushes the env into private data. bpftool is adjusted as well with the print_bpf_insn() argument removal, from Jiri. 6) Couple of cleanups and prep work for the upcoming BTF (BPF Type Format). The latter will reuse the current BPF verifier log as well, thus bpf_verifier_log() is further generalized, from Martin. 7) For bpf_getsockopt() and bpf_setsockopt() helpers, IPv4 IP_TOS read and write support has been added in similar fashion to existing IPv6 IPV6_TCLASS socket option we already have, from Nikita. 8) Fixes in recent sockmap scatterlist API usage, which did not use sg_init_table() for initialization thus triggering a BUG_ON() in scatterlist API when CONFIG_DEBUG_SG was enabled. This adds and uses a small helper sg_init_marker() to properly handle the affected cases, from Prashant. 9) Let the BPF core follow IDR code convention and therefore use the idr_preload() and idr_preload_end() helpers, which would also help idr_alloc_cyclic() under GFP_ATOMIC to better succeed under memory pressure, from Shaohua. 10) Last but not least, a spelling fix in an error message for the BPF cookie UID helper under BPF sample code, from Colin. ==================== Signed-off-by: David S. Miller

net/mediatek: disambiguate mt76 vs mt7601u trace events

2018-03-28T20:55:18+00:00

two trace events defined with the same name and both unused. They conflict in allyesconfig build. Rename one of them. Signed-off-by: Alexei Starovoitov Signed-off-by: Daniel Borkmann

mt76x2: fix warning in ieee80211_get_key_rx_seq()

2018-03-27T09:12:35+00:00

Fall back to software encryption for hw unsupported ciphers in order to fix the following warning in ieee80211_get_key_rx_seq routine: WARNING: CPU: 1 PID: 1277 at backports-2017-11-01/net/mac80211/key.c: 1010 mt76_wcid_key_setup+0x6c/0x138 [mt76] CPU: 1 PID: 1277 Comm: hostapd Tainted: G W 4.9.86 #0 Stack : 00000000 00000000 80527b4a 00000042 80523824 00000000 00000000 80520000 8fd79a9c 804bbda7 80454c84 00000001 000004fd 80523824 8f7e4ba0 8eceda12 00000010 8006af94 00000001 80520000 804c1f04 804c1f08 80459890 8ec999b4 00000003 800a7840 8f7e4ba0 8eceda12 8121de20 00000000 00000001 00c999b4 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 ... Call Trace: [<8000f52c>] show_stack+0x70/0x8c [<801d8d04>] dump_stack+0x94/0xd0 [<8002bcd4>] __warn+0x110/0x118 [<8002bd70>] warn_slowpath_null+0x1c/0x2c [<8f0415cc>] mt76_wcid_key_setup+0x6c/0x138 [mt76] [<8f1311b4>] mt76x2_dma_cleanup+0xa38/0x1048 [mt76x2e] Fixes: 30ce7f4456ae ("mt76: validate rx CCMP PN") Signed-off-by: Lorenzo Bianconi Acked-by: Felix Fietkau Signed-off-by: Kalle Valo

mt76x2: fix possible NULL pointer dereferencing in mt76x2_tx()

2018-03-27T09:10:30+00:00

Fix a theoretical NULL pointer dereferencing in mt76x2_tx routine that can occurs for injected frames in a monitor vif since vif pointer could be NULL for that interfaces Fixes: 23405236460b ("mt76: fix transmission of encrypted mgmt frames") Signed-off-by: Lorenzo Bianconi Acked-by: Felix Fietkau Signed-off-by: Kalle Valo

mt76: use mt76_poll_msec routine in mt76pci_load_firmware()

2018-03-27T09:10:02+00:00

Use mt76_poll_msec() in mt76pci_load_firmware to check if the firmware has been started instead of explicitly poll MCU running register Signed-off-by: Lorenzo Bianconi Signed-off-by: Kalle Valo

wireless: Use octal not symbolic permissions

2018-03-27T08:01:13+00:00

Prefer the direct use of octal for permissions. Done with checkpatch -f --types=SYMBOLIC_PERMS --fix-inplace and some typing. Miscellanea: o Whitespace neatening around these conversions. Signed-off-by: Joe Perches Signed-off-by: Kalle Valo