kernel/linux.git/net/wireless/nl80211.c, branch linux-5.17.y

nl80211: don't hold RTNL in color change request

2022-06-09T08:25:46+00:00

[ Upstream commit 1b550a0bebfc0b69d6ec08fe6eb58953a8aec48a ] It's not necessary to hold the RTNL across color change requests, since all the inner locking needs only the wiphy mutex which we already hold as well. Fixes: 0d2ab3aea50b ("nl80211: add support for BSS coloring") Link: https://lore.kernel.org/r/20220414140402.32e03e8c261b.I5e7dc6bc563a129b938c43298da6bb4e812400a5@changeid Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin

nl80211: show SSID for P2P_GO interfaces

2022-06-09T08:25:39+00:00

[ Upstream commit a75971bc2b8453630e9f85e0beaa4da8db8277a3 ] There's no real reason not to send the SSID to userspace when it requests information about P2P_GO, it is, in that respect, exactly the same as AP interfaces. Fix that. Fixes: 44905265bc15 ("nl80211: don't expose wdev->ssid for most interfaces") Signed-off-by: Johannes Berg Link: https://lore.kernel.org/r/20220318134656.14354ae223f0.Ia25e85a512281b92e1645d4160766a4b1a471597@changeid Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin

nl80211: fix locking in nl80211_set_tx_bitrate_mask()

2022-05-25T07:59:14+00:00

[ Upstream commit f971e1887fdb3ab500c9bebf4b98f62d49a20655 ] This accesses the wdev's chandef etc., so cannot safely be used without holding the lock. Signed-off-by: Johannes Berg Link: https://lore.kernel.org/r/20220506102136.06b7205419e6.I2a87c05fbd8bc5e565e84d190d4cfd2e92695a90@changeid Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin

nl80211: validate S1G channel width

2022-05-25T07:59:13+00:00

[ Upstream commit 5d087aa759eb82b8208411913f6c2158bd85abc0 ] Validate the S1G channel width input by user to ensure it matches that of the requested channel Signed-off-by: Kieran Frewen Signed-off-by: Bassem Dawood Link: https://lore.kernel.org/r/20220420041321.3788789-2-kieran.frewen@morsemicro.com Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin

nl80211: correctly check NL80211_ATTR_REG_ALPHA2 size

2022-04-20T07:36:26+00:00

commit 6624bb34b4eb19f715db9908cca00122748765d7 upstream. We need this to be at least two bytes, so we can access alpha2[0] and alpha2[1]. It may be three in case some userspace used NUL-termination since it was NLA_STRING (and we also push it out with NUL-termination). Cc: stable@vger.kernel.org Reported-by: Lee Jones Link: https://lore.kernel.org/r/20220411114201.fd4a31f06541.Ie7ff4be2cf348d8cc28ed0d626fc54becf7ea799@changeid Signed-off-by: Johannes Berg Signed-off-by: Greg Kroah-Hartman

nl80211: Update bss channel on channel switch for P2P_CLIENT

2022-03-02T21:37:05+00:00

The wdev channel information is updated post channel switch only for the station mode and not for the other modes. Due to this, the P2P client still points to the old value though it moved to the new channel when the channel change is induced from the P2P GO. Update the bss channel after CSA channel switch completion for P2P client interface as well. Signed-off-by: Sreeramya Soratkal Link: https://lore.kernel.org/r/1646114600-31479-1-git-send-email-quic_ssramya@quicinc.com Signed-off-by: Johannes Berg

nl80211: Handle nla_memdup failures in handle_nan_filter

2022-03-01T10:15:08+00:00

As there's potential for failure of the nla_memdup(), check the return value. Fixes: a442b761b24b ("cfg80211: add add_nan_func / del_nan_func") Signed-off-by: Jiasheng Jiang Link: https://lore.kernel.org/r/20220301100020.3801187-1-jiasheng@iscas.ac.cn Signed-off-by: Johannes Berg

nl80211: Add support to set AP settings flags with single attribute

2021-12-20T09:41:26+00:00

In previous method each AP settings flag is represented by a top-level flag attribute and conversion to enum cfg80211_ap_settings_flags had to be done before sending them to driver. This commit is to make it easier to define new AP settings flags and sending them to driver. This commit also deprecate sending of %NL80211_ATTR_EXTERNAL_AUTH_SUPPORT in %NL80211_CMD_START_AP. But to maintain backwards compatibility checks for %NL80211_ATTR_EXTERNAL_AUTH_SUPPORT in %NL80211_CMD_START_AP when %NL80211_ATTR_AP_SETTINGS_FLAGS not present in %NL80211_CMD_START_AP. Signed-off-by: Veerendranath Jakkam Link: https://lore.kernel.org/r/1637911519-21306-1-git-send-email-vjakkam@codeaurora.org Signed-off-by: Johannes Berg

cfg80211: rename offchannel_chain structs to background_chain to avoid confusion with ETSI standard

2021-12-20T09:37:36+00:00

ETSI standard defines "Offchannel CAC" as: "Off-Channel CAC is performed by a number of non-continuous checks spread over a period in time. This period, which is required to determine the presence of radar signals, is defined as the Off-Channel CAC Time.. Minimum Off-Channel CAC Time 6 minutes and Maximum Off-Channel CAC Time 4 hours..". mac80211 implementation refers to a dedicated hw chain used for continuous radar monitoring. Rename offchannel_* references to background_* in order to avoid confusion with ETSI standard. Signed-off-by: Lorenzo Bianconi Link: https://lore.kernel.org/r/4204cc1d648d76b44557981713231e030a3bd991.1638190762.git.lorenzo@kernel.org Signed-off-by: Johannes Berg

cfg80211: Add support for notifying association comeback

2021-12-20T09:37:03+00:00

Thought the underline driver MLME can handle association temporal rejection with comeback, it is still useful to notify this to user space, as user space might want to handle the temporal rejection differently. For example, in case the comeback time is too long, user space can deauthenticate immediately and try to associate with a different AP. Signed-off-by: Ilan Peer Signed-off-by: Luca Coelho Link: https://lore.kernel.org/r/iwlwifi.20211129152938.2467809e8cb3.I45574185b582666bc78eef0c29a4c36b478e5382@changeid Signed-off-by: Johannes Berg