Return-path: Received: from mail-co1nam03on0052.outbound.protection.outlook.com ([104.47.40.52]:13344 "EHLO NAM03-CO1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751236AbdIBBpB (ORCPT ); Fri, 1 Sep 2017 21:45:01 -0400 From: igor.mitsyanko.os@quantenna.com To: linux-wireless@vger.kernel.org Cc: sergey.matyukevich.os@quantenna.com, avinashp@quantenna.com, johannes@sipsolutions.net Subject: [PATCH V2 3/9] qtnfmac: retrieve current channel info from EP Date: Fri, 1 Sep 2017 18:44:45 -0700 Message-Id: <20170902014451.17766-4-igor.mitsyanko.os@quantenna.com> (sfid-20170902_034519_784527_E555FD24) In-Reply-To: <20170902014451.17766-1-igor.mitsyanko.os@quantenna.com> References: <20170902014451.17766-1-igor.mitsyanko.os@quantenna.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-wireless-owner@vger.kernel.org List-ID: From: Igor Mitsyanko Do not try to cache current operational channel info in driver, this is a potential source of synchronization issues + driver does not really need that info. Introduce GET_CHANNEL command and process it appropriately. Signed-off-by: Igor Mitsyanko --- drivers/net/wireless/quantenna/qtnfmac/cfg80211.c | 35 +++++++++------------ drivers/net/wireless/quantenna/qtnfmac/commands.c | 38 +++++++++++++++++++++++ drivers/net/wireless/quantenna/qtnfmac/commands.h | 1 + drivers/net/wireless/quantenna/qtnfmac/qlink.h | 11 +++++++ 4 files changed, 64 insertions(+), 21 deletions(-) diff --git a/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c b/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c index 856fa6e..0ef1285 100644 --- a/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c +++ b/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c @@ -793,37 +793,30 @@ qtnf_get_channel(struct wiphy *wiphy, struct wireless_dev *wdev, struct qtnf_wmac *mac = wiphy_priv(wiphy); struct net_device *ndev = wdev->netdev; struct qtnf_vif *vif; + int ret; if (!ndev) return -ENODEV; vif = qtnf_netdev_get_priv(wdev->netdev); - switch (vif->wdev.iftype) { - case NL80211_IFTYPE_STATION: - if (vif->sta_state == QTNF_STA_DISCONNECTED) { - pr_warn("%s: STA disconnected\n", ndev->name); - return -ENODATA; - } - break; - case NL80211_IFTYPE_AP: - if (!(vif->bss_status & QTNF_STATE_AP_START)) { - pr_warn("%s: AP not started\n", ndev->name); - return -ENODATA; - } - break; - default: - pr_err("unsupported vif type (%d)\n", vif->wdev.iftype); - return -ENODATA; + ret = qtnf_cmd_get_channel(vif, chandef); + if (ret) { + pr_err("%s: failed to get channel: %d\n", ndev->name, ret); + goto out; } - if (!cfg80211_chandef_valid(&mac->chandef)) { - pr_err("invalid channel settings on %s\n", ndev->name); - return -ENODATA; + if (!cfg80211_chandef_valid(chandef)) { + pr_err("%s: bad chan freq1=%u freq2=%u bw=%u\n", ndev->name, + chandef->center_freq1, chandef->center_freq2, + chandef->width); + ret = -ENODATA; } - memcpy(chandef, &mac->chandef, sizeof(*chandef)); - return 0; + memcpy(&mac->chandef, chandef, sizeof(mac->chandef)); + +out: + return ret; } static int qtnf_channel_switch(struct wiphy *wiphy, struct net_device *dev, diff --git a/drivers/net/wireless/quantenna/qtnfmac/commands.c b/drivers/net/wireless/quantenna/qtnfmac/commands.c index 4206886..806b88b 100644 --- a/drivers/net/wireless/quantenna/qtnfmac/commands.c +++ b/drivers/net/wireless/quantenna/qtnfmac/commands.c @@ -2358,3 +2358,41 @@ int qtnf_cmd_send_chan_switch(struct qtnf_wmac *mac, qtnf_bus_unlock(mac->bus); return ret; } + +int qtnf_cmd_get_channel(struct qtnf_vif *vif, struct cfg80211_chan_def *chdef) +{ + struct qtnf_bus *bus = vif->mac->bus; + const struct qlink_resp_channel_get *resp; + struct sk_buff *cmd_skb; + struct sk_buff *resp_skb = NULL; + u16 res_code = QLINK_CMD_RESULT_OK; + int ret; + + cmd_skb = qtnf_cmd_alloc_new_cmdskb(vif->mac->macid, vif->vifid, + QLINK_CMD_CHAN_GET, + sizeof(struct qlink_cmd)); + if (unlikely(!cmd_skb)) + return -ENOMEM; + + qtnf_bus_lock(bus); + + ret = qtnf_cmd_send_with_reply(bus, cmd_skb, &resp_skb, &res_code, + sizeof(*resp), NULL); + + qtnf_bus_unlock(bus); + + if (unlikely(ret)) + goto out; + + if (unlikely(res_code != QLINK_CMD_RESULT_OK)) { + ret = -ENODATA; + goto out; + } + + resp = (const struct qlink_resp_channel_get *)resp_skb->data; + qlink_chandef_q2cfg(priv_to_wiphy(vif->mac), &resp->chan, chdef); + +out: + consume_skb(resp_skb); + return ret; +} diff --git a/drivers/net/wireless/quantenna/qtnfmac/commands.h b/drivers/net/wireless/quantenna/qtnfmac/commands.h index 783b203..e1bcb83 100644 --- a/drivers/net/wireless/quantenna/qtnfmac/commands.h +++ b/drivers/net/wireless/quantenna/qtnfmac/commands.h @@ -75,5 +75,6 @@ int qtnf_cmd_get_chan_stats(struct qtnf_wmac *mac, u16 channel, struct qtnf_chan_stats *stats); int qtnf_cmd_send_chan_switch(struct qtnf_wmac *mac, struct cfg80211_csa_settings *params); +int qtnf_cmd_get_channel(struct qtnf_vif *vif, struct cfg80211_chan_def *chdef); #endif /* QLINK_COMMANDS_H_ */ diff --git a/drivers/net/wireless/quantenna/qtnfmac/qlink.h b/drivers/net/wireless/quantenna/qtnfmac/qlink.h index 5936854..fb88f3e 100644 --- a/drivers/net/wireless/quantenna/qtnfmac/qlink.h +++ b/drivers/net/wireless/quantenna/qtnfmac/qlink.h @@ -169,6 +169,7 @@ enum qlink_cmd_type { QLINK_CMD_REG_NOTIFY = 0x0019, QLINK_CMD_CHANS_INFO_GET = 0x001A, QLINK_CMD_CHAN_SWITCH = 0x001B, + QLINK_CMD_CHAN_GET = 0x001C, QLINK_CMD_CONFIG_AP = 0x0020, QLINK_CMD_START_AP = 0x0021, QLINK_CMD_STOP_AP = 0x0022, @@ -694,6 +695,16 @@ struct qlink_resp_get_chan_stats { u8 info[0]; } __packed; +/** + * struct qlink_resp_channel_get - response for QLINK_CMD_CHAN_GET command + * + * @chan: definition of current operating channel. + */ +struct qlink_resp_channel_get { + struct qlink_resp rhdr; + struct qlink_chandef chan; +} __packed; + /* QLINK Events messages related definitions */ -- 2.9.5