This change adds support for multi-scheduled scan in the driver. It currently relies on g-scan support in firmware and will set struct wiphy::max_sched_scan_reqs accordingly. This is limited to 16 concurrent requests.
The firmware currently has a limit of 64 channels that can be configured for all requests in total regardless whether there are duplicates. So if a request uses 35 channels there are 29 channels left for another request. When user-space does not specify any channels cfg80211 will add all channels defined by the wiphy instance to the request, which makes reaching the limit rather easy for dual-band devices. Reviewed-by: Hante Meuleman <hante.meule...@broadcom.com> Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesbe...@broadcom.com> Reviewed-by: Franky Lin <franky....@broadcom.com> Signed-off-by: Arend van Spriel <arend.vanspr...@broadcom.com> --- .../broadcom/brcm80211/brcmfmac/cfg80211.c | 67 +++- .../broadcom/brcm80211/brcmfmac/cfg80211.h | 6 +- .../wireless/broadcom/brcm80211/brcmfmac/core.c | 1 + .../wireless/broadcom/brcm80211/brcmfmac/debug.h | 2 + .../broadcom/brcm80211/brcmfmac/fwil_types.h | 32 +- .../net/wireless/broadcom/brcm80211/brcmfmac/pno.c | 398 ++++++++++++++++++--- .../net/wireless/broadcom/brcm80211/brcmfmac/pno.h | 47 ++- 7 files changed, 464 insertions(+), 89 deletions(-) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c index 6585411..151bba1 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c @@ -719,6 +719,8 @@ s32 brcmf_notify_escan_complete(struct brcmf_cfg80211_info *cfg, { struct brcmf_scan_params_le params_le; struct cfg80211_scan_request *scan_request; + u64 reqid; + u32 bucket; s32 err = 0; brcmf_dbg(SCAN, "Enter\n"); @@ -749,7 +751,7 @@ s32 brcmf_notify_escan_complete(struct brcmf_cfg80211_info *cfg, err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_SCAN, ¶ms_le, sizeof(params_le)); if (err) - brcmf_err("Scan abort failed\n"); + brcmf_err("Scan abort failed\n"); } brcmf_scan_config_mpc(ifp, 1); @@ -758,11 +760,21 @@ s32 brcmf_notify_escan_complete(struct brcmf_cfg80211_info *cfg, * e-scan can be initiated internally * which takes precedence. */ - if (cfg->internal_escan) { - brcmf_dbg(SCAN, "scheduled scan completed\n"); - cfg->internal_escan = false; - if (!aborted) - cfg80211_sched_scan_results(cfg_to_wiphy(cfg), 0); + if (cfg->int_escan_map) { + brcmf_dbg(SCAN, "scheduled scan completed (%x)\n", + cfg->int_escan_map); + while (cfg->int_escan_map) { + bucket = __ffs(cfg->int_escan_map); + cfg->int_escan_map &= ~BIT(bucket); + reqid = brcmf_pno_find_reqid_by_bucket(cfg->pno, + bucket); + if (!aborted) { + brcmf_dbg(SCAN, "report results: reqid=%llu\n", + reqid); + cfg80211_sched_scan_results(cfg_to_wiphy(cfg), + reqid); + } + } } else if (scan_request) { struct cfg80211_scan_info info = { .aborted = aborted, @@ -1011,7 +1023,7 @@ static void brcmf_escan_prep(struct brcmf_cfg80211_info *cfg, if (!ssid_le.SSID_len) brcmf_dbg(SCAN, "%d: Broadcast scan\n", i); else - brcmf_dbg(SCAN, "%d: scan for %s size =%d\n", + brcmf_dbg(SCAN, "%d: scan for %.32s size=%d\n", i, ssid_le.SSID, ssid_le.SSID_len); memcpy(ptr, &ssid_le, sizeof(ssid_le)); ptr += sizeof(ssid_le); @@ -3011,7 +3023,7 @@ void brcmf_abort_scanning(struct brcmf_cfg80211_info *cfg) struct escan_info *escan = &cfg->escan_info; set_bit(BRCMF_SCAN_STATUS_ABORT, &cfg->scan_status); - if (cfg->internal_escan || cfg->scan_request) { + if (cfg->int_escan_map || cfg->scan_request) { escan->escan_state = WL_ESCAN_STATE_IDLE; brcmf_notify_escan_complete(cfg, escan->ifp, true, true); } @@ -3034,7 +3046,7 @@ static void brcmf_escan_timeout(unsigned long data) struct brcmf_cfg80211_info *cfg = (struct brcmf_cfg80211_info *)data; - if (cfg->internal_escan || cfg->scan_request) { + if (cfg->int_escan_map || cfg->scan_request) { brcmf_err("timer expired\n"); schedule_work(&cfg->escan_timeout_work); } @@ -3120,7 +3132,7 @@ static void brcmf_escan_timeout(unsigned long data) if (brcmf_p2p_scan_finding_common_channel(cfg, bss_info_le)) goto exit; - if (!cfg->internal_escan && !cfg->scan_request) { + if (!cfg->int_escan_map && !cfg->scan_request) { brcmf_dbg(SCAN, "result without cfg80211 request\n"); goto exit; } @@ -3166,7 +3178,7 @@ static void brcmf_escan_timeout(unsigned long data) cfg->escan_info.escan_state = WL_ESCAN_STATE_IDLE; if (brcmf_p2p_scan_finding_common_channel(cfg, NULL)) goto exit; - if (cfg->internal_escan || cfg->scan_request) { + if (cfg->int_escan_map || cfg->scan_request) { brcmf_inform_bss(cfg); aborted = status != BRCMF_E_STATUS_SUCCESS; brcmf_notify_escan_complete(cfg, ifp, aborted, false); @@ -3236,17 +3248,21 @@ static int brcmf_internal_escan_add_info(struct cfg80211_scan_request *req, return 0; } -static int brcmf_start_internal_escan(struct brcmf_if *ifp, +static int brcmf_start_internal_escan(struct brcmf_if *ifp, u32 fwmap, struct cfg80211_scan_request *request) { struct brcmf_cfg80211_info *cfg = ifp->drvr->config; int err; if (test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status)) { + if (cfg->int_escan_map) + brcmf_dbg(SCAN, "aborting internal scan: map=%u\n", + cfg->int_escan_map); /* Abort any on-going scan */ brcmf_abort_scanning(cfg); } + brcmf_dbg(SCAN, "start internal scan: map=%u\n", fwmap); set_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status); cfg->escan_info.run = brcmf_run_escan; err = brcmf_do_escan(ifp, request); @@ -3254,7 +3270,7 @@ static int brcmf_start_internal_escan(struct brcmf_if *ifp, clear_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status); return err; } - cfg->internal_escan = true; + cfg->int_escan_map = fwmap; return 0; } @@ -3296,6 +3312,7 @@ static int brcmf_start_internal_escan(struct brcmf_if *ifp, struct wiphy *wiphy = cfg_to_wiphy(cfg); int i, err = 0; struct brcmf_pno_scanresults_le *pfn_result; + u32 bucket_map; u32 result_count; u32 status; @@ -3333,6 +3350,7 @@ static int brcmf_start_internal_escan(struct brcmf_if *ifp, netinfo_start = brcmf_get_netinfo_array(pfn_result); + bucket_map = 0; for (i = 0; i < result_count; i++) { netinfo = &netinfo_start[i]; if (!netinfo) { @@ -3344,6 +3362,7 @@ static int brcmf_start_internal_escan(struct brcmf_if *ifp, brcmf_dbg(SCAN, "SSID:%.32s Channel:%d\n", netinfo->SSID, netinfo->channel); + bucket_map |= brcmf_pno_get_bucket_map(cfg->pno, netinfo); err = brcmf_internal_escan_add_info(request, netinfo->SSID, netinfo->SSID_len, @@ -3352,7 +3371,10 @@ static int brcmf_start_internal_escan(struct brcmf_if *ifp, goto out_err; } - err = brcmf_start_internal_escan(ifp, request); + if (!bucket_map) + goto free_req; + + err = brcmf_start_internal_escan(ifp, bucket_map, request); if (!err) goto free_req; @@ -3371,11 +3393,11 @@ static int brcmf_start_internal_escan(struct brcmf_if *ifp, struct brcmf_if *ifp = netdev_priv(ndev); struct brcmf_cfg80211_info *cfg = wiphy_priv(wiphy); - brcmf_dbg(SCAN, "Enter n_match_sets:%d n_ssids:%d\n", + brcmf_dbg(SCAN, "Enter: n_match_sets=%d n_ssids=%d\n", req->n_match_sets, req->n_ssids); if (test_bit(BRCMF_SCAN_STATUS_SUPPRESS, &cfg->scan_status)) { - brcmf_err("Scanning suppressed: status (%lu)\n", + brcmf_err("Scanning suppressed: status=%lu\n", cfg->scan_status); return -EAGAIN; } @@ -3396,8 +3418,8 @@ static int brcmf_cfg80211_sched_scan_stop(struct wiphy *wiphy, struct brcmf_if *ifp = netdev_priv(ndev); brcmf_dbg(SCAN, "enter\n"); - brcmf_pno_clean(ifp); - if (cfg->internal_escan) + brcmf_pno_stop_sched_scan(ifp, reqid); + if (cfg->int_escan_map) brcmf_notify_escan_complete(cfg, ifp, true, true); return 0; } @@ -6922,6 +6944,13 @@ struct brcmf_cfg80211_info *brcmf_cfg80211_attach(struct brcmf_pub *drvr, brcmf_p2p_detach(&cfg->p2p); goto wiphy_unreg_out; } + err = brcmf_pno_attach(cfg); + if (err) { + brcmf_err("PNO initialisation failed (%d)\n", err); + brcmf_btcoex_detach(cfg); + brcmf_p2p_detach(&cfg->p2p); + goto wiphy_unreg_out; + } if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_TDLS)) { err = brcmf_fil_iovar_int_set(ifp, "tdls_enable", 1); @@ -6954,6 +6983,7 @@ struct brcmf_cfg80211_info *brcmf_cfg80211_attach(struct brcmf_pub *drvr, return cfg; detach: + brcmf_pno_detach(cfg); brcmf_btcoex_detach(cfg); brcmf_p2p_detach(&cfg->p2p); wiphy_unreg_out: @@ -6973,6 +7003,7 @@ void brcmf_cfg80211_detach(struct brcmf_cfg80211_info *cfg) if (!cfg) return; + brcmf_pno_detach(cfg); brcmf_btcoex_detach(cfg); wiphy_unregister(cfg->wiphy); kfree(cfg->ops); diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h index a1c2e0a..12ff154 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h @@ -273,7 +273,7 @@ struct brcmf_cfg80211_wowl { * @pub: common driver information. * @channel: current channel. * @active_scan: current scan mode. - * @internal_escan: indicates internally initiated e-scan is running. + * @int_escan_map: bucket map for which internal e-scan is done. * @ibss_starter: indicates this sta is ibss starter. * @pwr_save: indicate whether dongle to support power save mode. * @dongle_up: indicate whether dongle up or not. @@ -289,6 +289,7 @@ struct brcmf_cfg80211_wowl { * @vif_cnt: number of vif instances. * @vif_event: vif event signalling. * @wowl: wowl related information. + * @pno: information of pno module. */ struct brcmf_cfg80211_info { struct wiphy *wiphy; @@ -305,7 +306,7 @@ struct brcmf_cfg80211_info { struct brcmf_pub *pub; u32 channel; bool active_scan; - bool internal_escan; + u32 int_escan_map; bool ibss_starter; bool pwr_save; bool dongle_up; @@ -322,6 +323,7 @@ struct brcmf_cfg80211_info { struct brcmu_d11inf d11inf; struct brcmf_assoclist_le assoclist; struct brcmf_cfg80211_wowl wowl; + struct brcmf_pno_info *pno; }; /** diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c index 24118ce..8c011cd 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c @@ -30,6 +30,7 @@ #include "debug.h" #include "fwil_types.h" #include "p2p.h" +#include "pno.h" #include "cfg80211.h" #include "fwil.h" #include "feature.h" diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/debug.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/debug.h index fe264a5..35919d9 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/debug.h +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/debug.h @@ -78,6 +78,7 @@ #define BRCMF_EVENT_ON() (brcmf_msg_level & BRCMF_EVENT_VAL) #define BRCMF_FIL_ON() (brcmf_msg_level & BRCMF_FIL_VAL) #define BRCMF_FWCON_ON() (brcmf_msg_level & BRCMF_FWCON_VAL) +#define BRCMF_SCAN_ON() (brcmf_msg_level & BRCMF_SCAN_VAL) #else /* defined(DEBUG) || defined(CONFIG_BRCM_TRACING) */ @@ -96,6 +97,7 @@ #define BRCMF_EVENT_ON() 0 #define BRCMF_FIL_ON() 0 #define BRCMF_FWCON_ON() 0 +#define BRCMF_SCAN_ON() 0 #endif /* defined(DEBUG) || defined(CONFIG_BRCM_TRACING) */ diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil_types.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil_types.h index 8c18fad..45aaae8 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil_types.h +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil_types.h @@ -835,15 +835,18 @@ struct brcmf_gtk_keyinfo_le { u8 replay_counter[BRCMF_RSN_REPLAY_LEN]; }; +#define BRCMF_PNO_REPORT_NO_BATCH BIT(2) + /** * struct brcmf_gscan_bucket_config - configuration data for channel bucket. * - * @bucket_end_index: !unknown! - * @bucket_freq_multiple: !unknown! - * @flag: !unknown! - * @reserved: !unknown! - * @repeat: !unknown! - * @max_freq_multiple: !unknown! + * @bucket_end_index: last channel index in @channel_list in + * @struct brcmf_pno_config_le. + * @bucket_freq_multiple: scan interval expressed in N * @scan_freq. + * @flag: channel bucket report flags. + * @reserved: for future use. + * @repeat: number of scan at interval for exponential scan. + * @max_freq_multiple: maximum scan interval for exponential scan. */ struct brcmf_gscan_bucket_config { u8 bucket_end_index; @@ -855,16 +858,19 @@ struct brcmf_gscan_bucket_config { }; /* version supported which must match firmware */ -#define BRCMF_GSCAN_CFG_VERSION 1 +#define BRCMF_GSCAN_CFG_VERSION 2 /** * enum brcmf_gscan_cfg_flags - bit values for gscan flags. * * @BRCMF_GSCAN_CFG_FLAGS_ALL_RESULTS: send probe responses/beacons to host. + * @BRCMF_GSCAN_CFG_ALL_BUCKETS_IN_1ST_SCAN: all buckets will be included in + * first scan cycle. * @BRCMF_GSCAN_CFG_FLAGS_CHANGE_ONLY: indicated only flags member is changed. */ enum brcmf_gscan_cfg_flags { BRCMF_GSCAN_CFG_FLAGS_ALL_RESULTS = BIT(0), + BRCMF_GSCAN_CFG_ALL_BUCKETS_IN_1ST_SCAN = BIT(3), BRCMF_GSCAN_CFG_FLAGS_CHANGE_ONLY = BIT(7), }; @@ -884,12 +890,12 @@ enum brcmf_gscan_cfg_flags { */ struct brcmf_gscan_config { __le16 version; - u8 flags; - u8 buffer_threshold; - u8 swc_nbssid_threshold; - u8 swc_rssi_window_size; - u8 count_of_channel_buckets; - u8 retry_threshold; + u8 flags; + u8 buffer_threshold; + u8 swc_nbssid_threshold; + u8 swc_rssi_window_size; + u8 count_of_channel_buckets; + u8 retry_threshold; __le16 lost_ap_window; struct brcmf_gscan_bucket_config bucket[1]; }; diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c index a473445..5ae0680 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c @@ -14,6 +14,7 @@ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include <linux/netdevice.h> +#include <linux/gcd.h> #include <net/cfg80211.h> #include "core.h" @@ -35,6 +36,59 @@ #define BRCMF_PNO_HIDDEN_BIT 2 #define BRCMF_PNO_SCHED_SCAN_PERIOD 30 +#define BRCMF_PNO_MAX_BUCKETS 16 +#define GSCAN_BATCH_NO_THR_SET 101 +#define GSCAN_RETRY_THRESHOLD 3 + +struct brcmf_pno_info { + int n_reqs; + struct cfg80211_sched_scan_request *reqs[BRCMF_PNO_MAX_BUCKETS]; +}; + +#define ifp_to_pno(_ifp) ((_ifp)->drvr->config->pno) + +static int brcmf_pno_store_request(struct brcmf_pno_info *pi, + struct cfg80211_sched_scan_request *req) +{ + if (WARN_ON(pi->n_reqs == BRCMF_PNO_MAX_BUCKETS)) { + brcmf_err("pno request storage full\n"); + return -ENOSPC; + } + brcmf_dbg(SCAN, "reqid=%llu\n", req->reqid); + pi->reqs[pi->n_reqs++] = req; + return 0; +} + +static int brcmf_pno_remove_request(struct brcmf_pno_info *pi, u64 reqid) +{ + int i; + + /* find request */ + for (i = 0; i < pi->n_reqs; i++) { + if (pi->reqs[i]->reqid == reqid) + break; + } + /* request not found */ + if (WARN_ON(i == pi->n_reqs)) { + brcmf_err("reqid not found\n"); + return -ENOENT; + } + + brcmf_dbg(SCAN, "reqid=%llu\n", reqid); + pi->n_reqs--; + + /* if last we are done */ + if (!pi->n_reqs || i == pi->n_reqs) + return 0; + + /* fill the gap with remaining requests */ + while (i <= pi->n_reqs - 1) { + pi->reqs[i] = pi->reqs[i + 1]; + i++; + } + return 0; +} + static int brcmf_pno_channel_config(struct brcmf_if *ifp, struct brcmf_pno_config_le *cfg) { @@ -63,10 +117,6 @@ static int brcmf_pno_config(struct brcmf_if *ifp, u32 scan_freq, pfn_param.exp = BRCMF_PNO_FREQ_EXPO_MAX; /* set up pno scan fr */ - if (scan_freq < BRCMF_PNO_SCHED_SCAN_MIN_PERIOD) { - brcmf_dbg(SCAN, "scan period too small, using minimum\n"); - scan_freq = BRCMF_PNO_SCHED_SCAN_MIN_PERIOD; - } pfn_param.scan_freq = cpu_to_le32(scan_freq); if (mscan) { @@ -101,12 +151,24 @@ static int brcmf_pno_config(struct brcmf_if *ifp, u32 scan_freq, return err; } -static int brcmf_pno_set_random(struct brcmf_if *ifp, u8 *mac_addr, - u8 *mac_mask) +static int brcmf_pno_set_random(struct brcmf_if *ifp, struct brcmf_pno_info *pi) { struct brcmf_pno_macaddr_le pfn_mac; + u8 *mac_addr; + u8 *mac_mask; int err, i; + for (i = 0; i < pi->n_reqs; i++) + if (pi->reqs[i]->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { + mac_addr = pi->reqs[i]->mac_addr; + mac_mask = pi->reqs[i]->mac_addr_mask; + break; + } + + /* no random mac requested */ + if (i == pi->n_reqs) + return 0; + pfn_mac.version = BRCMF_PFN_MACADDR_CFG_VER; pfn_mac.flags = BRCMF_PFN_MAC_OUI_ONLY | BRCMF_PFN_SET_MAC_UNASSOC; @@ -120,6 +182,8 @@ static int brcmf_pno_set_random(struct brcmf_if *ifp, u8 *mac_addr, /* Set locally administered */ pfn_mac.mac[0] |= 0x02; + brcmf_dbg(SCAN, "enabling random mac: reqid=%llu mac=%pM\n", + pi->reqs[i]->reqid, pfn_mac.mac); err = brcmf_fil_iovar_data_set(ifp, "pfn_macaddr", &pfn_mac, sizeof(pfn_mac)); if (err) @@ -163,7 +227,7 @@ static bool brcmf_is_ssid_active(struct cfg80211_ssid *ssid, return false; } -int brcmf_pno_clean(struct brcmf_if *ifp) +static int brcmf_pno_clean(struct brcmf_if *ifp) { int ret; @@ -179,73 +243,307 @@ int brcmf_pno_clean(struct brcmf_if *ifp) return ret; } -int brcmf_pno_start_sched_scan(struct brcmf_if *ifp, - struct cfg80211_sched_scan_request *req) +static int brcmf_pno_get_bucket_channels(struct cfg80211_sched_scan_request *r, + struct brcmf_pno_config_le *pno_cfg) { - struct brcmf_pno_config_le pno_cfg; - struct cfg80211_ssid *ssid; + u32 n_chan = le32_to_cpu(pno_cfg->channel_num); u16 chan; - int i, ret; + int i, err = 0; - /* clean up everything */ - ret = brcmf_pno_clean(ifp); - if (ret < 0) { - brcmf_err("failed error=%d\n", ret); - return ret; + for (i = 0; i < r->n_channels; i++) { + if (n_chan >= BRCMF_NUMCHANNELS) { + err = -ENOSPC; + goto done; + } + chan = r->channels[i]->hw_value; + brcmf_dbg(SCAN, "[%d] Chan : %u\n", n_chan, chan); + pno_cfg->channel_list[n_chan++] = cpu_to_le16(chan); } + /* return number of channels */ + err = n_chan; +done: + pno_cfg->channel_num = cpu_to_le32(n_chan); + return err; +} - /* configure pno */ - ret = brcmf_pno_config(ifp, req->scan_plans[0].interval, 0, 0); - if (ret < 0) - return ret; - - /* configure random mac */ - if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { - ret = brcmf_pno_set_random(ifp, req->mac_addr, - req->mac_addr_mask); - if (ret < 0) - return ret; +static int brcmf_pno_prep_fwconfig(struct brcmf_pno_info *pi, + struct brcmf_pno_config_le *pno_cfg, + struct brcmf_gscan_bucket_config **buckets, + u32 *scan_freq) +{ + struct cfg80211_sched_scan_request *sr; + struct brcmf_gscan_bucket_config *fw_buckets; + int i, err, chidx; + + brcmf_dbg(SCAN, "n_reqs=%d\n", pi->n_reqs); + if (WARN_ON(!pi->n_reqs)) + return -ENODATA; + + /* + * actual scan period is determined using gcd() for each + * scheduled scan period. + */ + *scan_freq = pi->reqs[0]->scan_plans[0].interval; + for (i = 1; i < pi->n_reqs; i++) { + sr = pi->reqs[i]; + *scan_freq = gcd(sr->scan_plans[0].interval, *scan_freq); + } + if (*scan_freq < BRCMF_PNO_SCHED_SCAN_MIN_PERIOD) { + brcmf_dbg(SCAN, "scan period too small, using minimum\n"); + *scan_freq = BRCMF_PNO_SCHED_SCAN_MIN_PERIOD; } - /* configure channels to use */ - for (i = 0; i < req->n_channels; i++) { - chan = req->channels[i]->hw_value; - pno_cfg.channel_list[i] = cpu_to_le16(chan); + *buckets = NULL; + fw_buckets = kcalloc(pi->n_reqs, sizeof(*fw_buckets), GFP_KERNEL); + if (!fw_buckets) + return -ENOMEM; + + memset(pno_cfg, 0, sizeof(*pno_cfg)); + for (i = 0; i < pi->n_reqs; i++) { + sr = pi->reqs[i]; + chidx = brcmf_pno_get_bucket_channels(sr, pno_cfg); + if (chidx < 0) { + err = chidx; + goto fail; + } + fw_buckets[i].bucket_end_index = chidx - 1; + fw_buckets[i].bucket_freq_multiple = + sr->scan_plans[0].interval / *scan_freq; + /* assure period is non-zero */ + if (!fw_buckets[i].bucket_freq_multiple) + fw_buckets[i].bucket_freq_multiple = 1; + fw_buckets[i].flag = BRCMF_PNO_REPORT_NO_BATCH; } - if (req->n_channels) { - pno_cfg.channel_num = cpu_to_le32(req->n_channels); - brcmf_pno_channel_config(ifp, &pno_cfg); + + if (BRCMF_SCAN_ON()) { + brcmf_err("base period=%u\n", *scan_freq); + for (i = 0; i < pi->n_reqs; i++) { + brcmf_err("[%d] period %u max %u repeat %u flag %x idx %u\n", + i, fw_buckets[i].bucket_freq_multiple, + le16_to_cpu(fw_buckets[i].max_freq_multiple), + fw_buckets[i].repeat, fw_buckets[i].flag, + fw_buckets[i].bucket_end_index); + } } + *buckets = fw_buckets; + return pi->n_reqs; - /* configure each match set */ - for (i = 0; i < req->n_match_sets; i++) { - ssid = &req->match_sets[i].ssid; - if (!ssid->ssid_len) { - brcmf_err("skip broadcast ssid\n"); - continue; +fail: + kfree(fw_buckets); + return err; +} + +static int brcmf_pno_config_ssids(struct brcmf_if *ifp, + struct brcmf_pno_info *pi) +{ + struct cfg80211_sched_scan_request *r; + struct cfg80211_match_set *ms; + bool active; + int i, j, err; + + for (i = 0; i < pi->n_reqs; i++) { + r = pi->reqs[i]; + + for (j = 0; j < r->n_match_sets; j++) { + ms = &r->match_sets[j]; + if (!ms->ssid.ssid_len) + continue; + active = brcmf_is_ssid_active(&ms->ssid, r); + brcmf_dbg(SCAN, "adding %.32s (active=%d)\n", + ms->ssid.ssid, active); + err = brcmf_pno_add_ssid(ifp, &ms->ssid, active); + if (err < 0) { + brcmf_err("adding failed: err=%d\n", err); + return err; + } } + } + return 0; +} + +static int brcmf_pno_config_sched_scans(struct brcmf_if *ifp) +{ + struct brcmf_pno_info *pi; + struct brcmf_gscan_config *gscan_cfg; + struct brcmf_gscan_bucket_config *buckets; + struct brcmf_pno_config_le pno_cfg; + size_t gsz; + u32 scan_freq; + int err, n_buckets; + + pi = ifp_to_pno(ifp); + n_buckets = brcmf_pno_prep_fwconfig(pi, &pno_cfg, &buckets, + &scan_freq); + if (n_buckets < 0) + return n_buckets; + + gsz = sizeof(*gscan_cfg) + (n_buckets - 1) * sizeof(*buckets); + gscan_cfg = kzalloc(gsz, GFP_KERNEL); + if (!gscan_cfg) { + err = -ENOMEM; + goto free_buckets; + } - ret = brcmf_pno_add_ssid(ifp, ssid, - brcmf_is_ssid_active(ssid, req)); - if (ret < 0) - brcmf_dbg(SCAN, ">>> PNO filter %s for ssid (%s)\n", - ret == 0 ? "set" : "failed", ssid->ssid); + /* clean up everything */ + err = brcmf_pno_clean(ifp); + if (err < 0) { + brcmf_err("failed error=%d\n", err); + goto free_gscan; } + + /* configure pno */ + err = brcmf_pno_config(ifp, scan_freq, 0, 0); + if (err < 0) + goto free_gscan; + + err = brcmf_pno_channel_config(ifp, &pno_cfg); + if (err < 0) + goto clean; + + gscan_cfg->version = cpu_to_le16(BRCMF_GSCAN_CFG_VERSION); + gscan_cfg->retry_threshold = GSCAN_RETRY_THRESHOLD; + gscan_cfg->buffer_threshold = GSCAN_BATCH_NO_THR_SET; + gscan_cfg->flags = BRCMF_GSCAN_CFG_ALL_BUCKETS_IN_1ST_SCAN; + + gscan_cfg->count_of_channel_buckets = n_buckets; + memcpy(&gscan_cfg->bucket[0], buckets, + n_buckets * sizeof(*buckets)); + + err = brcmf_fil_iovar_data_set(ifp, "pfn_gscan_cfg", gscan_cfg, gsz); + + if (err < 0) + goto clean; + + /* configure random mac */ + err = brcmf_pno_set_random(ifp, pi); + if (err < 0) + goto clean; + + err = brcmf_pno_config_ssids(ifp, pi); + if (err < 0) + goto clean; + /* Enable the PNO */ - ret = brcmf_fil_iovar_int_set(ifp, "pfn", 1); + err = brcmf_fil_iovar_int_set(ifp, "pfn", 1); + +clean: + if (err < 0) + brcmf_pno_clean(ifp); +free_gscan: + kfree(gscan_cfg); +free_buckets: + kfree(buckets); + return err; +} + +int brcmf_pno_start_sched_scan(struct brcmf_if *ifp, + struct cfg80211_sched_scan_request *req) +{ + struct brcmf_pno_info *pi; + int ret; + + brcmf_dbg(TRACE, "reqid=%llu\n", req->reqid); + + pi = ifp_to_pno(ifp); + ret = brcmf_pno_store_request(pi, req); if (ret < 0) - brcmf_err("PNO enable failed!! ret=%d\n", ret); + return ret; - return ret; + ret = brcmf_pno_config_sched_scans(ifp); + if (ret < 0) { + brcmf_pno_remove_request(pi, req->reqid); + if (pi->n_reqs) + (void)brcmf_pno_config_sched_scans(ifp); + return ret; + } + return 0; +} + +int brcmf_pno_stop_sched_scan(struct brcmf_if *ifp, u64 reqid) +{ + struct brcmf_pno_info *pi; + int err; + + brcmf_dbg(TRACE, "reqid=%llu\n", reqid); + + pi = ifp_to_pno(ifp); + err = brcmf_pno_remove_request(pi, reqid); + if (err) + return err; + + brcmf_pno_clean(ifp); + + if (pi->n_reqs) + (void)brcmf_pno_config_sched_scans(ifp); + + return 0; +} + +int brcmf_pno_attach(struct brcmf_cfg80211_info *cfg) +{ + struct brcmf_pno_info *pi; + + brcmf_err("enter\n"); + pi = kzalloc(sizeof(*pi), GFP_KERNEL); + if (!pi) + return -ENOMEM; + + cfg->pno = pi; + return 0; +} + +void brcmf_pno_detach(struct brcmf_cfg80211_info *cfg) +{ + struct brcmf_pno_info *pi; + + brcmf_err("enter\n"); + pi = cfg->pno; + cfg->pno = NULL; + + WARN_ON(pi->n_reqs); + kfree(pi); } void brcmf_pno_wiphy_params(struct wiphy *wiphy, bool gscan) { /* scheduled scan settings */ - wiphy->max_sched_scan_reqs = gscan ? 2 : 1; + wiphy->max_sched_scan_reqs = gscan ? BRCMF_PNO_MAX_BUCKETS : 1; wiphy->max_sched_scan_ssids = BRCMF_PNO_MAX_PFN_COUNT; wiphy->max_match_sets = BRCMF_PNO_MAX_PFN_COUNT; wiphy->max_sched_scan_ie_len = BRCMF_SCAN_IE_LEN_MAX; wiphy->max_sched_scan_plan_interval = BRCMF_PNO_SCHED_SCAN_MAX_PERIOD; } +u64 brcmf_pno_find_reqid_by_bucket(struct brcmf_pno_info *pi, u32 bucket) +{ + /* bucket appears to be gone */ + if (bucket >= pi->n_reqs) + return 0; + + return pi->reqs[bucket]->reqid; +} + +u32 brcmf_pno_get_bucket_map(struct brcmf_pno_info *pi, + struct brcmf_pno_net_info_le *ni) +{ + struct cfg80211_sched_scan_request *req; + struct cfg80211_match_set *ms; + u32 bucket_map = 0; + int i, j; + + for (i = 0; i < pi->n_reqs; i++) { + req = pi->reqs[i]; + + if (!req->n_match_sets) + continue; + for (j = 0; j < req->n_match_sets; j++) { + ms = &req->match_sets[j]; + if (ms->ssid.ssid_len == ni->SSID_len && + !strncmp(ms->ssid.ssid, ni->SSID, ni->SSID_len)) { + bucket_map |= BIT(i); + break; + } + } + } + return bucket_map; +} diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.h index 07ec51f..cd9e35a 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.h +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.h @@ -21,12 +21,8 @@ #define BRCMF_PNO_SCHED_SCAN_MIN_PERIOD 10 #define BRCMF_PNO_SCHED_SCAN_MAX_PERIOD 508 -/** - * brcmf_pno_clean - disable and clear pno in firmware. - * - * @ifp: interface object used. - */ -int brcmf_pno_clean(struct brcmf_if *ifp); +/* forward declaration */ +struct brcmf_pno_info; /** * brcmf_pno_start_sched_scan - initiate scheduled scan on device. @@ -38,6 +34,14 @@ int brcmf_pno_start_sched_scan(struct brcmf_if *ifp, struct cfg80211_sched_scan_request *req); /** + * brcmf_pno_stop_sched_scan - terminate scheduled scan on device. + * + * @ifp: interface object used. + * @reqid: unique identifier of scan to be stopped. + */ +int brcmf_pno_stop_sched_scan(struct brcmf_if *ifp, u64 reqid); + +/** * brcmf_pno_wiphy_params - fill scheduled scan parameters in wiphy instance. * * @wiphy: wiphy instance to be used. @@ -45,4 +49,35 @@ int brcmf_pno_start_sched_scan(struct brcmf_if *ifp, */ void brcmf_pno_wiphy_params(struct wiphy *wiphy, bool gscan); +/** + * brcmf_pno_attach - allocate and attach module information. + * + * @cfg: cfg80211 context used. + */ +int brcmf_pno_attach(struct brcmf_cfg80211_info *cfg); + +/** + * brcmf_pno_detach - detach and free module information. + * + * @cfg: cfg80211 context used. + */ +void brcmf_pno_detach(struct brcmf_cfg80211_info *cfg); + +/** + * brcmf_pno_find_reqid_by_bucket - find request id for given bucket index. + * + * @pi: pno instance used. + * @bucket: index of firmware bucket. + */ +u64 brcmf_pno_find_reqid_by_bucket(struct brcmf_pno_info *pi, u32 bucket); + +/** + * brcmf_pno_get_bucket_map - determine bucket map for given netinfo. + * + * @pi: pno instance used. + * @netinfo: netinfo to compare with bucket configuration. + */ +u32 brcmf_pno_get_bucket_map(struct brcmf_pno_info *pi, + struct brcmf_pno_net_info_le *netinfo); + #endif /* _BRCMF_PNO_H */ -- 1.9.1