From 30240fc76a57e37a4bb42976ff7162b5e45e6117 Mon Sep 17 00:00:00 2001 From: Juuso Oikarinen Date: Thu, 18 Feb 2010 13:25:38 +0200 Subject: [PATCH] wl1271: Add SSID configuration for JOIN in ad-hoc This patch adds code to extract the SSID from the beacon template used for ad-hoc. The mac80211 currently does not provide the SSID, so this is a workaround for that, for now. Signed-off-by: Juuso Oikarinen Reviewed-by: Luciano Coelho Signed-off-by: John W. Linville --- drivers/net/wireless/wl12xx/wl1271_event.c | 10 ++++- drivers/net/wireless/wl12xx/wl1271_main.c | 69 +++++++++++++++++++----------- 2 files changed, 51 insertions(+), 28 deletions(-) diff --git a/drivers/net/wireless/wl12xx/wl1271_event.c b/drivers/net/wireless/wl12xx/wl1271_event.c index cecbae2..2803e70 100644 --- a/drivers/net/wireless/wl12xx/wl1271_event.c +++ b/drivers/net/wireless/wl12xx/wl1271_event.c @@ -92,7 +92,12 @@ static int wl1271_event_ps_report(struct wl1271 *wl, true); } else { wl1271_error("PSM entry failed, giving up.\n"); - /* make sure the firmware goes into active mode */ + /* FIXME: this may need to be reconsidered. for now it + is not possible to indicate to the mac80211 + afterwards that PSM entry failed. To maximize + functionality (receiving data and remaining + associated) make sure that we are in sync with the + AP in regard of PSM mode. */ ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE, false); wl->psm_entry_retry = 0; @@ -124,7 +129,8 @@ static int wl1271_event_ps_report(struct wl1271 *wl, break; } - /* make sure the firmware goes to active mode */ + /* make sure the firmware goes to active mode - the frame to + be sent next will indicate to the AP, that we are active. */ ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE, false); break; diff --git a/drivers/net/wireless/wl12xx/wl1271_main.c b/drivers/net/wireless/wl12xx/wl1271_main.c index 8b46b70..a3742c8 100644 --- a/drivers/net/wireless/wl12xx/wl1271_main.c +++ b/drivers/net/wireless/wl12xx/wl1271_main.c @@ -1549,6 +1549,23 @@ out: return ret; } +static void wl1271_ssid_set(struct wl1271 *wl, struct sk_buff *beacon) +{ + u8 *ptr = beacon->data + + offsetof(struct ieee80211_mgmt, u.beacon.variable); + + /* find the location of the ssid in the beacon */ + while (ptr < beacon->data + beacon->len) { + if (ptr[0] == WLAN_EID_SSID) { + wl->ssid_len = ptr[1]; + memcpy(wl->ssid, ptr+2, wl->ssid_len); + return; + } + ptr += ptr[1]; + } + wl1271_error("ad-hoc beacon template has no SSID!\n"); +} + static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_bss_conf *bss_conf, @@ -1566,40 +1583,17 @@ static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw, if (ret < 0) goto out; - if ((changed & BSS_CHANGED_BSSID) && - /* - * Now we know the correct bssid, so we send a new join command - * and enable the BSSID filter - */ - memcmp(wl->bssid, bss_conf->bssid, ETH_ALEN)) { - wl->rx_config |= CFG_BSSID_FILTER_EN; - memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN); - ret = wl1271_cmd_build_null_data(wl); - if (ret < 0) { - wl1271_warning("cmd buld null data failed %d", - ret); - goto out_sleep; - } - ret = wl1271_cmd_join(wl); - if (ret < 0) { - wl1271_warning("cmd join failed %d", ret); - goto out_sleep; - } - set_bit(WL1271_FLAG_JOINED, &wl->flags); - } - if (wl->bss_type == BSS_TYPE_IBSS) { /* FIXME: This implements rudimentary ad-hoc support - proper templates are on the wish list and notification on when they change. This patch will update the templates - on every call to this function. Also, the firmware will not - answer to probe-requests as it does not have the proper - SSID set in the JOIN command. The probe-response template - is set nevertheless, as the FW will ASSERT without it */ + on every call to this function. */ struct sk_buff *beacon = ieee80211_beacon_get(hw, vif); if (beacon) { struct ieee80211_hdr *hdr; + + wl1271_ssid_set(wl, beacon); ret = wl1271_cmd_template_set(wl, CMD_TEMPL_BEACON, beacon->data, beacon->len); @@ -1624,6 +1618,29 @@ static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw, } } + if ((changed & BSS_CHANGED_BSSID) && + /* + * Now we know the correct bssid, so we send a new join command + * and enable the BSSID filter + */ + memcmp(wl->bssid, bss_conf->bssid, ETH_ALEN)) { + wl->rx_config |= CFG_BSSID_FILTER_EN; + memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN); + ret = wl1271_cmd_build_null_data(wl); + if (ret < 0) { + wl1271_warning("cmd buld null data failed %d", + ret); + goto out_sleep; + } + + ret = wl1271_cmd_join(wl); + if (ret < 0) { + wl1271_warning("cmd join failed %d", ret); + goto out_sleep; + } + set_bit(WL1271_FLAG_JOINED, &wl->flags); + } + if (changed & BSS_CHANGED_ASSOC) { if (bss_conf->assoc) { wl->aid = bss_conf->aid; -- 2.7.4