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Tue, 21 Sep 2021 13:26:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 smtp.codeaurora.org F1B19C4338F Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=codeaurora.org From: Kalle Valo To: Jouni Malinen Cc: ath11k@lists.infradead.org, linux-wireless@vger.kernel.org, Seevalamuthu Mariappan , Miles Hu , Vasanthakumar Thiagarajan Subject: Re: [PATCH 2/3] ath11k: add separate APIs for monitor mode References: <20210721162053.46290-1-jouni@codeaurora.org> <20210721162053.46290-3-jouni@codeaurora.org> Date: Tue, 21 Sep 2021 16:26:17 +0300 In-Reply-To: <20210721162053.46290-3-jouni@codeaurora.org> (Jouni Malinen's message of "Wed, 21 Jul 2021 19:20:52 +0300") Message-ID: <877dfaukjq.fsf@codeaurora.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Jouni Malinen writes: > From: Seevalamuthu Mariappan > > Add separate APIs for monitor_vdev_create/monitor_vdev_delete > and monitor_vdev_start/monitor_vdev_stop. > > Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.4.0.1-01725-QCAHKSWPL_SILICONZ-1 > > Co-developed-by: Miles Hu > Signed-off-by: Miles Hu > Co-developed-by: Vasanthakumar Thiagarajan > Signed-off-by: Vasanthakumar Thiagarajan > Signed-off-by: Seevalamuthu Mariappan > Signed-off-by: Jouni Malinen > --- > drivers/net/wireless/ath/ath11k/core.h | 5 +- > drivers/net/wireless/ath/ath11k/mac.c | 313 ++++++++++++++++++++++++- > 2 files changed, 312 insertions(+), 6 deletions(-) > > diff --git a/drivers/net/wireless/ath/ath11k/core.h b/drivers/net/wireless/ath/ath11k/core.h > index 6a6cabdd3e30..3cddab695031 100644 > --- a/drivers/net/wireless/ath/ath11k/core.h > +++ b/drivers/net/wireless/ath/ath11k/core.h > @@ -488,7 +488,8 @@ struct ath11k { > u32 chan_tx_pwr; > u32 num_stations; > u32 max_num_stations; > - bool monitor_present; > + bool monitor_conf_enabled; > + bool monitor_started; > /* To synchronize concurrent synchronous mac80211 callback operations, > * concurrent debugfs configuration and concurrent FW statistics events. > */ > @@ -563,6 +564,7 @@ struct ath11k { > struct ath11k_per_peer_tx_stats cached_stats; > u32 last_ppdu_id; > u32 cached_ppdu_id; > + int monitor_vdev_id; > #ifdef CONFIG_ATH11K_DEBUGFS > struct ath11k_debug debug; > #endif > @@ -571,6 +573,7 @@ struct ath11k { > #endif > bool dfs_block_radar_events; > struct ath11k_thermal thermal; > + bool monitor_vdev_created; > }; > > struct ath11k_band_cap { > diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c > index 3fd9a79801cb..e446817ac8b0 100644 > --- a/drivers/net/wireless/ath/ath11k/mac.c > +++ b/drivers/net/wireless/ath/ath11k/mac.c > @@ -745,14 +745,314 @@ static inline int ath11k_mac_vdev_setup_sync(struct ath11k *ar) > return ar->last_wmi_vdev_start_status ? -EINVAL : 0; > } > > -static int ath11k_mac_op_config(struct ieee80211_hw *hw, u32 changed) > +static void > +ath11k_mac_get_any_chandef_iter(struct ieee80211_hw *hw, > + struct ieee80211_chanctx_conf *conf, > + void *data) > { > - /* mac80211 requires this op to be present and that's why > - * there's an empty function, this can be extended when > - * required. > - */ > + struct cfg80211_chan_def **def = data; > + > + *def = &conf->def; > +} > + > +static int ath11k_mac_monitor_vdev_start(struct ath11k *ar, int vdev_id, > + struct cfg80211_chan_def *chandef) > +{ > + struct ieee80211_channel *channel; > + struct wmi_vdev_start_req_arg arg = {}; > + int ret; > + > + lockdep_assert_held(&ar->conf_mutex); > + > + channel = chandef->chan; > + > + arg.vdev_id = vdev_id; > + arg.channel.freq = channel->center_freq; > + arg.channel.band_center_freq1 = chandef->center_freq1; > + arg.channel.band_center_freq2 = chandef->center_freq2; > + > + arg.channel.mode = ath11k_phymodes[chandef->chan->band][chandef->width]; > + arg.channel.chan_radar = > + !!(channel->flags & IEEE80211_CHAN_RADAR); > + > + arg.channel.min_power = 0; > + arg.channel.max_power = channel->max_power * 2; > + arg.channel.max_reg_power = channel->max_reg_power * 2; > + arg.channel.max_antenna_gain = channel->max_antenna_gain * 2; > + > + arg.pref_tx_streams = ar->num_tx_chains; > + arg.pref_rx_streams = ar->num_rx_chains; > + > + arg.channel.passive = !!(chandef->chan->flags & IEEE80211_CHAN_NO_IR); > + > + reinit_completion(&ar->vdev_setup_done); > + reinit_completion(&ar->vdev_delete_done); > > + ret = ath11k_wmi_vdev_start(ar, &arg, false); > + if (ret) { > + ath11k_warn(ar->ab, "failed to request monitor vdev %i start: %d\n", > + vdev_id, ret); > + return ret; > + } > + ret = ath11k_mac_vdev_setup_sync(ar); > + if (ret) { > + ath11k_warn(ar->ab, "failed to synchronize setup for monitor vdev %i start: %d\n", > + vdev_id, ret); > + return ret; > + } > + ret = ath11k_wmi_vdev_up(ar, vdev_id, 0, ar->mac_addr); > + if (ret) { > + ath11k_warn(ar->ab, "failed to put up monitor vdev %i: %d\n", > + vdev_id, ret); > + goto vdev_stop; > + } > + ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "mac monitor vdev %i started\n", > + vdev_id); > return 0; > + > +vdev_stop: > + reinit_completion(&ar->vdev_setup_done); > + > + ret = ath11k_wmi_vdev_stop(ar, vdev_id); > + if (ret) { > + ath11k_warn(ar->ab, "failed to stop monitor vdev %i after start failure: %d\n", > + vdev_id, ret); > + return ret; > + } > + > + ret = ath11k_mac_vdev_setup_sync(ar); > + if (ret) > + ath11k_warn(ar->ab, "failed to synchronize setup for vdev %i stop: %d\n", > + vdev_id, ret); I added return ret here for consistency.. > + return ret; I don't thinks this is right, in an error path (vdev_stop label) we return 0? I changed this to -EIO. > +static int ath11k_mac_monitor_vdev_stop(struct ath11k *ar) > +{ > + int ret; > + > + lockdep_assert_held(&ar->conf_mutex); > + > + reinit_completion(&ar->vdev_setup_done); > + > + ret = ath11k_wmi_vdev_stop(ar, ar->monitor_vdev_id); > + if (ret) > + ath11k_warn(ar->ab, "failed to request monitor vdev %i stop: %d\n", > + ar->monitor_vdev_id, ret); > + > + ret = ath11k_mac_vdev_setup_sync(ar); > + if (ret) > + ath11k_warn(ar->ab, "failed to synchronize monitor vdev %i stop: %d\n", > + ar->monitor_vdev_id, ret); > + > + ret = ath11k_wmi_vdev_down(ar, ar->monitor_vdev_id); > + if (ret) > + ath11k_warn(ar->ab, "failed to put down monitor vdev %i: %d\n", > + ar->monitor_vdev_id, ret); > + > + ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "mac monitor vdev %i stopped\n", > + ar->monitor_vdev_id); > + return ret; > +} I was not sure what's the idea of error path handling here, we print warnings but still continue the normal execution. I changed this so that we bail out in the first error and if everything goes well we return 0. -- https://patchwork.kernel.org/project/linux-wireless/list/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches