diff options
Diffstat (limited to 'net/mac802154/scan.c')
| -rw-r--r-- | net/mac802154/scan.c | 68 |
1 files changed, 62 insertions, 6 deletions
diff --git a/net/mac802154/scan.c b/net/mac802154/scan.c index 5c191bedd72c..d9658f2c4ae6 100644 --- a/net/mac802154/scan.c +++ b/net/mac802154/scan.c @@ -18,8 +18,12 @@ #define IEEE802154_BEACON_MHR_SZ 13 #define IEEE802154_BEACON_PL_SZ 4 +#define IEEE802154_MAC_CMD_MHR_SZ 23 +#define IEEE802154_MAC_CMD_PL_SZ 1 #define IEEE802154_BEACON_SKB_SZ (IEEE802154_BEACON_MHR_SZ + \ IEEE802154_BEACON_PL_SZ) +#define IEEE802154_MAC_CMD_SKB_SZ (IEEE802154_MAC_CMD_MHR_SZ + \ + IEEE802154_MAC_CMD_PL_SZ) /* mac802154_scan_cleanup_locked() must be called upon scan completion or abort. * - Completions are asynchronous, not locked by the rtnl and decided by the @@ -131,6 +135,42 @@ static int mac802154_scan_find_next_chan(struct ieee802154_local *local, return 0; } +static int mac802154_scan_prepare_beacon_req(struct ieee802154_local *local) +{ + memset(&local->scan_beacon_req, 0, sizeof(local->scan_beacon_req)); + local->scan_beacon_req.mhr.fc.type = IEEE802154_FC_TYPE_MAC_CMD; + local->scan_beacon_req.mhr.fc.dest_addr_mode = IEEE802154_SHORT_ADDRESSING; + local->scan_beacon_req.mhr.fc.version = IEEE802154_2003_STD; + local->scan_beacon_req.mhr.fc.source_addr_mode = IEEE802154_NO_ADDRESSING; + local->scan_beacon_req.mhr.dest.mode = IEEE802154_ADDR_SHORT; + local->scan_beacon_req.mhr.dest.pan_id = cpu_to_le16(IEEE802154_PANID_BROADCAST); + local->scan_beacon_req.mhr.dest.short_addr = cpu_to_le16(IEEE802154_ADDR_BROADCAST); + local->scan_beacon_req.mac_pl.cmd_id = IEEE802154_CMD_BEACON_REQ; + + return 0; +} + +static int mac802154_transmit_beacon_req(struct ieee802154_local *local, + struct ieee802154_sub_if_data *sdata) +{ + struct sk_buff *skb; + int ret; + + skb = alloc_skb(IEEE802154_MAC_CMD_SKB_SZ, GFP_KERNEL); + if (!skb) + return -ENOBUFS; + + skb->dev = sdata->dev; + + ret = ieee802154_mac_cmd_push(skb, &local->scan_beacon_req, NULL, 0); + if (ret) { + kfree_skb(skb); + return ret; + } + + return ieee802154_mlme_tx(local, sdata, skb); +} + void mac802154_scan_worker(struct work_struct *work) { struct ieee802154_local *local = @@ -206,6 +246,13 @@ void mac802154_scan_worker(struct work_struct *work) goto end_scan; } + if (scan_req->type == NL802154_SCAN_ACTIVE) { + ret = mac802154_transmit_beacon_req(local, sdata); + if (ret) + dev_err(&sdata->dev->dev, + "Error when transmitting beacon request (%d)\n", ret); + } + ieee802154_configure_durations(wpan_phy, page, channel); scan_duration = mac802154_scan_get_channel_time(scan_req_duration, wpan_phy->symbol_duration); @@ -231,8 +278,8 @@ int mac802154_trigger_scan_locked(struct ieee802154_sub_if_data *sdata, if (mac802154_is_scanning(local)) return -EBUSY; - /* TODO: support other scanning type */ - if (request->type != NL802154_SCAN_PASSIVE) + if (request->type != NL802154_SCAN_PASSIVE && + request->type != NL802154_SCAN_ACTIVE) return -EOPNOTSUPP; /* Store scanning parameters */ @@ -247,6 +294,8 @@ int mac802154_trigger_scan_locked(struct ieee802154_sub_if_data *sdata, local->scan_page = request->page; local->scan_channel = -1; set_bit(IEEE802154_IS_SCANNING, &local->ongoing); + if (request->type == NL802154_SCAN_ACTIVE) + mac802154_scan_prepare_beacon_req(local); nl802154_scan_started(request->wpan_phy, request->wpan_dev); @@ -354,6 +403,7 @@ void mac802154_beacon_worker(struct work_struct *work) struct cfg802154_beacon_request *beacon_req; struct ieee802154_sub_if_data *sdata; struct wpan_dev *wpan_dev; + u8 interval; int ret; rcu_read_lock(); @@ -374,6 +424,7 @@ void mac802154_beacon_worker(struct work_struct *work) } wpan_dev = beacon_req->wpan_dev; + interval = beacon_req->interval; rcu_read_unlock(); @@ -383,8 +434,9 @@ void mac802154_beacon_worker(struct work_struct *work) dev_err(&sdata->dev->dev, "Beacon could not be transmitted (%d)\n", ret); - queue_delayed_work(local->mac_wq, &local->beacon_work, - local->beacon_interval); + if (interval < IEEE802154_ACTIVE_SCAN_DURATION) + queue_delayed_work(local->mac_wq, &local->beacon_work, + local->beacon_interval); } int mac802154_stop_beacons_locked(struct ieee802154_local *local, @@ -439,13 +491,17 @@ int mac802154_send_beacons_locked(struct ieee802154_sub_if_data *sdata, local->beacon.mhr.source.pan_id = request->wpan_dev->pan_id; local->beacon.mhr.source.extended_addr = request->wpan_dev->extended_addr; local->beacon.mac_pl.beacon_order = request->interval; - local->beacon.mac_pl.superframe_order = request->interval; + if (request->interval <= IEEE802154_MAX_SCAN_DURATION) + local->beacon.mac_pl.superframe_order = request->interval; local->beacon.mac_pl.final_cap_slot = 0xf; local->beacon.mac_pl.battery_life_ext = 0; - /* TODO: Fill this field depending on the coordinator capacity */ + /* TODO: Fill this field with the coordinator situation in the network */ local->beacon.mac_pl.pan_coordinator = 1; local->beacon.mac_pl.assoc_permit = 1; + if (request->interval == IEEE802154_ACTIVE_SCAN_DURATION) + return 0; + /* Start the beacon work */ local->beacon_interval = mac802154_scan_get_channel_time(request->interval, |