kernel/linux.git/net/wireless/chan.c, branch v5.10.257

cfg80211: only allow S1G channels on S1G band

2020-10-08T08:41:24+00:00

As discovered by syzbot, cfg80211 was accepting S1G channel widths on non-S1G bands. Add a check for this, and consolidate the 1MHz frequency check as it ends up being a subset of the others. Reported-by: syzbot+92715a0eccd6c881bc32@syzkaller.appspotmail.com Fixes: 11b34737b18a ("nl80211: support setting S1G channels") Signed-off-by: Thomas Pedersen Link: https://lore.kernel.org/r/20201005165122.17583-1-thomas@adapt-ip.com Signed-off-by: Johannes Berg

nl80211: support setting S1G channels

2020-09-18T10:31:17+00:00

S1G channels have a single width defined per frequency, so derive it from the channel flags with ieee80211_s1g_channel_width(). Also support setting an S1G channel where control frequency may differ from operating, and add some basic validation to ensure the control channel is with the operating. Signed-off-by: Thomas Pedersen Link: https://lore.kernel.org/r/20200908190323.15814-6-thomas@adapt-ip.com Signed-off-by: Johannes Berg

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2020-09-04T01:50:48+00:00

Pull networking fixes from David Miller: 1) Use netif_rx_ni() when necessary in batman-adv stack, from Jussi Kivilinna. 2) Fix loss of RTT samples in rxrpc, from David Howells. 3) Memory leak in hns_nic_dev_probe(), from Dignhao Liu. 4) ravb module cannot be unloaded, fix from Yuusuke Ashizuka. 5) We disable BH for too lokng in sctp_get_port_local(), add a cond_resched() here as well, from Xin Long. 6) Fix memory leak in st95hf_in_send_cmd, from Dinghao Liu. 7) Out of bound access in bpf_raw_tp_link_fill_link_info(), from Yonghong Song. 8) Missing of_node_put() in mt7530 DSA driver, from Sumera Priyadarsini. 9) Fix crash in bnxt_fw_reset_task(), from Michael Chan. 10) Fix geneve tunnel checksumming bug in hns3, from Yi Li. 11) Memory leak in rxkad_verify_response, from Dinghao Liu. 12) In tipc, don't use smp_processor_id() in preemptible context. From Tuong Lien. 13) Fix signedness issue in mlx4 memory allocation, from Shung-Hsi Yu. 14) Missing clk_disable_prepare() in gemini driver, from Dan Carpenter. 15) Fix ABI mismatch between driver and firmware in nfp, from Louis Peens. * git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (110 commits) net/smc: fix sock refcounting in case of termination net/smc: reset sndbuf_desc if freed net/smc: set rx_off for SMCR explicitly net/smc: fix toleration of fake add_link messages tg3: Fix soft lockup when tg3_reset_task() fails. doc: net: dsa: Fix typo in config code sample net: dp83867: Fix WoL SecureOn password nfp: flower: fix ABI mismatch between driver and firmware tipc: fix shutdown() of connectionless socket ipv6: Fix sysctl max for fib_multipath_hash_policy drivers/net/wan/hdlc: Change the default of hard_header_len to 0 net: gemini: Fix another missing clk_disable_unprepare() in probe net: bcmgenet: fix mask check in bcmgenet_validate_flow() amd-xgbe: Add support for new port mode net: usb: dm9601: Add USB ID of Keenetic Plus DSL vhost: fix typo in error message net: ethernet: mlx4: Fix memory allocation in mlx4_buddy_init() pktgen: fix error message with wrong function name net: ethernet: ti: am65-cpsw: fix rmii 100Mbit link mode cxgb4: fix thermal zone device registration ...

wireless: fix wrong 160/80+80 MHz setting

2020-08-27T08:46:53+00:00

Fix cfg80211_chandef_usable(): consider IEEE80211_VHT_CAP_EXT_NSS_BW when verifying 160/80+80 MHz. Based on: "Table 9-272 — Setting of the Supported Channel Width Set subfield and Extended NSS BW Support subfield at a STA transmitting the VHT Capabilities Information field" From "Draft P802.11REVmd_D3.0.pdf" Signed-off-by: Aviad Brikman Signed-off-by: Shay Bar Link: https://lore.kernel.org/r/20200826143139.25976-1-shay.bar@celeno.com [reformat the code a bit and use u32_get_bits()] Signed-off-by: Johannes Berg

treewide: Use fallthrough pseudo-keyword

2020-08-23T22:36:59+00:00

Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva

nl80211: S1G band and channel definitions

2020-07-31T07:24:13+00:00

Gives drivers the definitions needed to advertise support for S1G bands. Signed-off-by: Thomas Pedersen Link: https://lore.kernel.org/r/20200602062247.23212-1-thomas@adapt-ip.com Link: https://lore.kernel.org/r/20200731055636.795173-1-thomas@adapt-ip.com Signed-off-by: Johannes Berg

cfg80211: treat 6 GHz channels as valid regardless of capability

2020-05-31T09:27:08+00:00

If a 6 GHz channel exists, then we can probably safely assume that the device actually supports it, and then it should support most bandwidths. This will probably need to be extended to check the interface type and then dig into the HE capabilities for that though, to have the correct bandwidth check. Link: https://lore.kernel.org/r/20200528213443.d4864ef52e92.I82f09b2b14a56413ce20376d09967fe954a033eb@changeid Signed-off-by: Johannes Berg

cfg80211: reject channels/chandefs with KHz offset >= 1000

2020-04-24T10:38:20+00:00

This should be covered by the next MHz, make sure that the numbers are always normalized. Signed-off-by: Johannes Berg Link: https://lore.kernel.org/r/20200424120103.12b91ecf75f9.I4bf499d58404283bbfacb517d614a816763bccf2@changeid Signed-off-by: Johannes Berg

cfg80211: express channels with a KHz component

2020-04-24T10:33:43+00:00

Some bands (S1G) define channels centered on a non-integer MHz. Give ieee80211_channel and cfg80211_chan_def a freq_offset component where the final frequency can be expressed as: MHZ_TO_KHZ(chan->center_freq) + chan->freq_offset; Also provide some helper functions to do the frequency conversion and test for equality. Retain the existing interface to frequency and channel conversion helpers, and expose new ones which handle frequencies in units of KHz. Some internal functions (net/wireless/chan.c) pass around a frequency value. Convert these to units of KHz. mesh, ibss, wext, etc. are currently ignored. Signed-off-by: Thomas Pedersen Link: https://lore.kernel.org/r/20200402011810.22947-3-thomas@adapt-ip.com Signed-off-by: Johannes Berg

nl80211: Disallow setting of HT for channel 14

2019-10-30T09:07:22+00:00

This patch disables setting of HT20 and more for channel 14 because the channel is only for IEEE 802.11b. The patch for net/wireless/util.c was unit-tested. The patch for net/wireless/chan.c was tested with iw command. Before this patch. $ sudo iw dev set channel 14 HT20 $ After this patch. $ sudo iw dev set channel 14 HT20 kernel reports: invalid channel definition command failed: Invalid argument (-22) $ Signed-off-by: Masashi Honma Link: https://lore.kernel.org/r/20191021075045.2719-1-masashi.honma@gmail.com [clean up the code, use != instead of equivalent >] Signed-off-by: Johannes Berg