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| author | Miquel Raynal <miquel.raynal@bootlin.com> | 2023-01-03 17:56:44 +0100 |
|---|---|---|
| committer | Stefan Schmidt <stefan@datenfreihafen.org> | 2023-01-03 19:48:43 +0100 |
| commit | 57588c71177f0bfc08509c2c3a9bfe32850c0786 (patch) | |
| tree | d381093fc255c71da0f2acddcd0eb20dd0c8a9f4 /net/mac802154/cfg.c | |
| parent | mac802154: Add MLME Tx locked helpers (diff) | |
| download | linux-57588c71177f0bfc08509c2c3a9bfe32850c0786.tar.xz linux-57588c71177f0bfc08509c2c3a9bfe32850c0786.zip | |
mac802154: Handle passive scanning
Implement the core hooks in order to provide the softMAC layer support
for passive scans. Scans are requested by the user and can be aborted.
Changing channels manually is prohibited during scans.
The implementation uses a workqueue triggered at a certain interval
depending on the symbol duration for the current channel and the
duration order provided. More advanced drivers with internal scheduling
capabilities might require additional care but there is none mainline
yet.
Received beacons during a passive scan are processed in a work queue and
their result forwarded to the upper layer.
Active scanning is not supported yet.
Co-developed-by: David Girault <david.girault@qorvo.com>
Signed-off-by: David Girault <david.girault@qorvo.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Alexander Aring <aahringo@redhat.com>
Link: https://lore.kernel.org/r/20230103165644.432209-7-miquel.raynal@bootlin.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Diffstat (limited to 'net/mac802154/cfg.c')
| -rw-r--r-- | net/mac802154/cfg.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/net/mac802154/cfg.c b/net/mac802154/cfg.c index 469d6e8dd2dd..187cebcaf233 100644 --- a/net/mac802154/cfg.c +++ b/net/mac802154/cfg.c @@ -114,6 +114,10 @@ ieee802154_set_channel(struct wpan_phy *wpan_phy, u8 page, u8 channel) wpan_phy->current_channel == channel) return 0; + /* Refuse to change channels during a scanning operation */ + if (mac802154_is_scanning(local)) + return -EBUSY; + ret = drv_set_channel(local, page, channel); if (!ret) { wpan_phy->current_page = page; @@ -261,6 +265,31 @@ ieee802154_set_ackreq_default(struct wpan_phy *wpan_phy, return 0; } +static int mac802154_trigger_scan(struct wpan_phy *wpan_phy, + struct cfg802154_scan_request *request) +{ + struct ieee802154_sub_if_data *sdata; + + sdata = IEEE802154_WPAN_DEV_TO_SUB_IF(request->wpan_dev); + + ASSERT_RTNL(); + + return mac802154_trigger_scan_locked(sdata, request); +} + +static int mac802154_abort_scan(struct wpan_phy *wpan_phy, + struct wpan_dev *wpan_dev) +{ + struct ieee802154_local *local = wpan_phy_priv(wpan_phy); + struct ieee802154_sub_if_data *sdata; + + sdata = IEEE802154_WPAN_DEV_TO_SUB_IF(wpan_dev); + + ASSERT_RTNL(); + + return mac802154_abort_scan_locked(local, sdata); +} + #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL static void ieee802154_get_llsec_table(struct wpan_phy *wpan_phy, @@ -468,6 +497,8 @@ const struct cfg802154_ops mac802154_config_ops = { .set_max_frame_retries = ieee802154_set_max_frame_retries, .set_lbt_mode = ieee802154_set_lbt_mode, .set_ackreq_default = ieee802154_set_ackreq_default, + .trigger_scan = mac802154_trigger_scan, + .abort_scan = mac802154_abort_scan, #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL .get_llsec_table = ieee802154_get_llsec_table, .lock_llsec_table = ieee802154_lock_llsec_table, |