Date: Thu, 30 Nov 2023 00:38:19 GMT From: "Bjoern A. Zeeb" <bz@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 861bf0606a5b - stable/14 - LinuxKPI: 802.11: deal with scan_ie_len Message-ID: <202311300038.3AU0cJRr052076@gitrepo.freebsd.org>
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The branch stable/14 has been updated by bz: URL: https://cgit.FreeBSD.org/src/commit/?id=861bf0606a5b13ecc796c278c57b5e51830d68ba commit 861bf0606a5b13ecc796c278c57b5e51830d68ba Author: Bjoern A. Zeeb <bz@FreeBSD.org> AuthorDate: 2023-10-27 20:41:43 +0000 Commit: Bjoern A. Zeeb <bz@FreeBSD.org> CommitDate: 2023-11-30 00:36:57 +0000 LinuxKPI: 802.11: deal with scan_ie_len We only need to reserve the extra space for DSSS if NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES is set, so add the conditional. Also add checks in case scan_ie_len will grow beyond the maximum. Given this is currently unlikely, leave the cleanup for later as some other restructuring should be done first. Sponsored by: The FreeBSD Foundation Reviewed by: cc Differential Revision: https://reviews.freebsd.org/D42425 (cherry picked from commit 78ca45df310563ca46448a124674e0542aab2e31) --- sys/compat/linuxkpi/common/src/linux_80211.c | 22 ++++++++++++++++------ 1 file changed, 16 insertions(+), 6 deletions(-) diff --git a/sys/compat/linuxkpi/common/src/linux_80211.c b/sys/compat/linuxkpi/common/src/linux_80211.c index aba7e0e961a6..ffda3c5693cd 100644 --- a/sys/compat/linuxkpi/common/src/linux_80211.c +++ b/sys/compat/linuxkpi/common/src/linux_80211.c @@ -3919,20 +3919,30 @@ linuxkpi_ieee80211_ifattach(struct ieee80211_hw *hw) lhw->scan_ie_len = 2 + IEEE80211_RATE_SIZE; if (lhw->max_rates > IEEE80211_RATE_SIZE) lhw->scan_ie_len += 2 + (lhw->max_rates - IEEE80211_RATE_SIZE); - /* - * net80211 does not seem to support the DSSS Parameter Set but some of - * the drivers insert it so calculate the extra fixed space in. - */ - lhw->scan_ie_len += 2 + 1; + + if (hw->wiphy->features & NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) { + /* + * net80211 does not seem to support the DSSS Parameter Set but + * some of the drivers insert it so calculate the extra fixed + * space in. + */ + lhw->scan_ie_len += 2 + 1; + } /* Reduce the max_scan_ie_len "left" by the amount we consume already. */ - if (hw->wiphy->max_scan_ie_len > 0) + if (hw->wiphy->max_scan_ie_len > 0) { + if (lhw->scan_ie_len > hw->wiphy->max_scan_ie_len) + goto err; hw->wiphy->max_scan_ie_len -= lhw->scan_ie_len; + } if (bootverbose) ieee80211_announce(ic); return (0); +err: + IMPROVE("TODO FIXME CLEANUP"); + return (-EAGAIN); } void
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