mirror of
https://github.com/FUjr/gl-infra-builder.git
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108 lines
3.1 KiB
Diff
108 lines
3.1 KiB
Diff
From bd9ced66371dbfc7d87d1362f62d7df80199c9d4 Mon Sep 17 00:00:00 2001
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From: Jianhui Zhao <jianhui.zhao@gl-inet.com>
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Date: Mon, 17 Apr 2023 16:31:59 +0800
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Subject: [PATCH] mac80211: support set dfs channel available via debugfs
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This is used to support dynamically switch to dfs channel.
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Signed-off-by: Jianhui Zhao <jianhui.zhao@gl-inet.com>
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---
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.../787-support-set-dfs-available.patch | 85 +++++++++++++++++++
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1 file changed, 85 insertions(+)
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create mode 100644 package/kernel/mac80211/patches/subsys/787-support-set-dfs-available.patch
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diff --git a/package/kernel/mac80211/patches/subsys/787-support-set-dfs-available.patch b/package/kernel/mac80211/patches/subsys/787-support-set-dfs-available.patch
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new file mode 100644
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index 0000000000..183e5142c4
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--- /dev/null
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+++ b/package/kernel/mac80211/patches/subsys/787-support-set-dfs-available.patch
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@@ -0,0 +1,85 @@
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+--- a/net/wireless/debugfs.c
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++++ b/net/wireless/debugfs.c
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+@@ -96,9 +96,76 @@ static const struct file_operations ht40
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+ .llseek = default_llseek,
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+ };
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+
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++static ssize_t set_dfs_available_write(struct file *file, const char __user *ptr,
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++ size_t len, loff_t *off)
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++{
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++ struct wiphy *wiphy = file->private_data;
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++ struct cfg80211_chan_def chandef = {};
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++ u32 freq, width, center_freq1;
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++ char buf[256] = "";
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++
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++ if (copy_from_user(buf, ptr, min(len, sizeof(buf) - 1)))
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++ return -EFAULT;
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++
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++ if (sscanf(buf, "%u %u %u", &freq, ¢er_freq1, &width) != 3)
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++ return -EINVAL;
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++
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++ dev_info(&wiphy->dev, "set dfs available: %u(%u) %d MHz\n", freq, center_freq1, width);
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++
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++ chandef.chan = ieee80211_get_channel(wiphy, freq);
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++ chandef.center_freq1 = center_freq1;
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++
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++ switch (width) {
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++ case 0:
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++ chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
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++ break;
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++ case 20:
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++ chandef.width = NL80211_CHAN_WIDTH_20;
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++ break;
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++ case 40:
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++ chandef.width = NL80211_CHAN_WIDTH_40;
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++ break;
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++ case 80:
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++ chandef.width = NL80211_CHAN_WIDTH_80;
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++ break;
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++ case 160:
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++ chandef.width = NL80211_CHAN_WIDTH_160;
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++ break;
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++ default:
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++ dev_err(&wiphy->dev, "invalid channel width\n");
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++ return -EINVAL;
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++ }
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++
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++ if (!cfg80211_chandef_valid(&chandef)) {
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++ dev_err(&wiphy->dev, "invalid channel definition\n");
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++ return -EINVAL;
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++ }
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++
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++ rtnl_lock();
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++ wiphy_lock(wiphy);
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++ __release(&wiphy->mtx);
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++
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++ cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_AVAILABLE);
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++
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++ __acquire(&wiphy->mtx);
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++ wiphy_unlock(wiphy);
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++ rtnl_unlock();
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++
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++ return len;
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++}
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++
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++static const struct file_operations set_dfs_available_ops = {
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++ .write = set_dfs_available_write,
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++ .open = simple_open,
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++ .llseek = noop_llseek,
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++};
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++
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+ #define DEBUGFS_ADD(name) \
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+ debugfs_create_file(#name, 0444, phyd, &rdev->wiphy, &name## _ops)
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+
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++#define DEBUGFS_ADD_MODE(name, mode) \
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++ debugfs_create_file(#name, mode, phyd, &rdev->wiphy, &name## _ops)
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++
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+ void cfg80211_debugfs_rdev_add(struct cfg80211_registered_device *rdev)
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+ {
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+ struct dentry *phyd = rdev->wiphy.debugfsdir;
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+@@ -108,4 +175,5 @@ void cfg80211_debugfs_rdev_add(struct cf
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+ DEBUGFS_ADD(short_retry_limit);
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+ DEBUGFS_ADD(long_retry_limit);
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+ DEBUGFS_ADD(ht40allow_map);
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++ DEBUGFS_ADD_MODE(set_dfs_available, 0200);
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+ }
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--
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2.34.1
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