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[60.242.93.14]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-139d91006bcsm15463687c88.13.2026.06.25.23.30.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 25 Jun 2026 23:30:34 -0700 (PDT) From: Lachlan Hodges To: johannes@sipsolutions.net Cc: arien.judge@morsemicro.com, dan.callaghan@morsemicro.com, ayman.grais@morsemicro.com, linux-wireless@vger.kernel.org, Lachlan Hodges , linux-kernel@vger.kernel.org Subject: [PATCH wireless-next v3 01/33] wifi: cfg80211: introduce helper to get S1G primary width Date: Fri, 26 Jun 2026 16:28:57 +1000 Message-ID: <20260626063014.1275235-2-lachlan.hodges@morsemicro.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260626063014.1275235-1-lachlan.hodges@morsemicro.com> References: <20260626063014.1275235-1-lachlan.hodges@morsemicro.com> Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This is needed for drivers and will be needed for mac80211/cfg80211 in the future so introduce a generic accessor to retrieve the chandefs S1G primary channel width. Signed-off-by: Lachlan Hodges --- include/net/cfg80211.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 8188ad200de5..a5d54d70d72b 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -1236,6 +1236,26 @@ ieee80211_chandef_max_power(struct cfg80211_chan_def *chandef) return chandef->chan->max_power; } +/** + * cfg80211_chandef_s1g_pri_width - return S1G primary width in MHz + * + * An S1G interface may have a primary channel width of either 1 + * or 2MHz depending on whether chandef::s1g_primary_2mhz is set. + * + * Note: There is _always_ a 1MHz primary subchannel, regardless + * of the primary width. So chandef::chan always points to this + * 1MHz primary channel. + * + * @chandef: the chandef to use + * + * Returns: width in MHz of the S1G primary channel in use + */ +static inline int +cfg80211_chandef_s1g_pri_width(struct cfg80211_chan_def *chandef) +{ + return chandef->s1g_primary_2mhz ? 2 : 1; +} + /** * cfg80211_any_usable_channels - check for usable channels * @wiphy: the wiphy to check for -- 2.43.0