diff options
Diffstat (limited to 'drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c')
| -rw-r--r-- | drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c new file mode 100644 index 000000000000..f273cab0da10 --- /dev/null +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c @@ -0,0 +1,242 @@ +/* + * Copyright (c) 2016 Broadcom + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +#include <linux/netdevice.h> +#include <net/cfg80211.h> + +#include "core.h" +#include "debug.h" +#include "fwil.h" +#include "fwil_types.h" +#include "cfg80211.h" +#include "pno.h" + +#define BRCMF_PNO_VERSION 2 +#define BRCMF_PNO_REPEAT 4 +#define BRCMF_PNO_FREQ_EXPO_MAX 3 +#define BRCMF_PNO_IMMEDIATE_SCAN_BIT 3 +#define BRCMF_PNO_ENABLE_BD_SCAN_BIT 5 +#define BRCMF_PNO_ENABLE_ADAPTSCAN_BIT 6 +#define BRCMF_PNO_REPORT_SEPARATELY_BIT 11 +#define BRCMF_PNO_SCAN_INCOMPLETE 0 +#define BRCMF_PNO_WPA_AUTH_ANY 0xFFFFFFFF +#define BRCMF_PNO_HIDDEN_BIT 2 +#define BRCMF_PNO_SCHED_SCAN_PERIOD 30 + +static int brcmf_pno_channel_config(struct brcmf_if *ifp, + struct brcmf_pno_config_le *cfg) +{ + cfg->reporttype = 0; + cfg->flags = 0; + + return brcmf_fil_iovar_data_set(ifp, "pfn_cfg", cfg, sizeof(*cfg)); +} + +static int brcmf_pno_config(struct brcmf_if *ifp, u32 scan_freq, + u32 mscan, u32 bestn) +{ + struct brcmf_pno_param_le pfn_param; + u16 flags; + u32 pfnmem; + s32 err; + + memset(&pfn_param, 0, sizeof(pfn_param)); + pfn_param.version = cpu_to_le32(BRCMF_PNO_VERSION); + + /* set extra pno params */ + flags = BIT(BRCMF_PNO_IMMEDIATE_SCAN_BIT) | + BIT(BRCMF_PNO_REPORT_SEPARATELY_BIT) | + BIT(BRCMF_PNO_ENABLE_ADAPTSCAN_BIT); + pfn_param.repeat = BRCMF_PNO_REPEAT; + 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) { + pfnmem = bestn; + + /* set bestn in firmware */ + err = brcmf_fil_iovar_int_set(ifp, "pfnmem", pfnmem); + if (err < 0) { + brcmf_err("failed to set pfnmem\n"); + goto exit; + } + /* get max mscan which the firmware supports */ + err = brcmf_fil_iovar_int_get(ifp, "pfnmem", &pfnmem); + if (err < 0) { + brcmf_err("failed to get pfnmem\n"); + goto exit; + } + mscan = min_t(u32, mscan, pfnmem); + pfn_param.mscan = mscan; + pfn_param.bestn = bestn; + flags |= BIT(BRCMF_PNO_ENABLE_BD_SCAN_BIT); + brcmf_dbg(INFO, "mscan=%d, bestn=%d\n", mscan, bestn); + } + + pfn_param.flags = cpu_to_le16(flags); + err = brcmf_fil_iovar_data_set(ifp, "pfn_set", &pfn_param, + sizeof(pfn_param)); + if (err) + brcmf_err("pfn_set failed, err=%d\n", err); + +exit: + return err; +} + +static int brcmf_pno_set_random(struct brcmf_if *ifp, u8 *mac_addr, + u8 *mac_mask) +{ + struct brcmf_pno_macaddr_le pfn_mac; + int err, i; + + pfn_mac.version = BRCMF_PFN_MACADDR_CFG_VER; + pfn_mac.flags = BRCMF_PFN_MAC_OUI_ONLY | BRCMF_PFN_SET_MAC_UNASSOC; + + memcpy(pfn_mac.mac, mac_addr, ETH_ALEN); + for (i = 0; i < ETH_ALEN; i++) { + pfn_mac.mac[i] &= mac_mask[i]; + pfn_mac.mac[i] |= get_random_int() & ~(mac_mask[i]); + } + /* Clear multi bit */ + pfn_mac.mac[0] &= 0xFE; + /* Set locally administered */ + pfn_mac.mac[0] |= 0x02; + + err = brcmf_fil_iovar_data_set(ifp, "pfn_macaddr", &pfn_mac, + sizeof(pfn_mac)); + if (err) + brcmf_err("pfn_macaddr failed, err=%d\n", err); + + return err; +} + +static int brcmf_pno_add_ssid(struct brcmf_if *ifp, struct cfg80211_ssid *ssid, + bool active) +{ + struct brcmf_pno_net_param_le pfn; + + pfn.auth = cpu_to_le32(WLAN_AUTH_OPEN); + pfn.wpa_auth = cpu_to_le32(BRCMF_PNO_WPA_AUTH_ANY); + pfn.wsec = cpu_to_le32(0); + pfn.infra = cpu_to_le32(1); + if (active) + pfn.flags = cpu_to_le32(1 << BRCMF_PNO_HIDDEN_BIT); + pfn.ssid.SSID_len = cpu_to_le32(ssid->ssid_len); + memcpy(pfn.ssid.SSID, ssid->ssid, ssid->ssid_len); + return brcmf_fil_iovar_data_set(ifp, "pfn_add", &pfn, sizeof(pfn)); +} + +static bool brcmf_is_ssid_active(struct cfg80211_ssid *ssid, + struct cfg80211_sched_scan_request *req) +{ + int i; + + if (!ssid || !req->ssids || !req->n_ssids) + return false; + + for (i = 0; i < req->n_ssids; i++) { + if (ssid->ssid_len == req->ssids[i].ssid_len) { + if (!strncmp(ssid->ssid, req->ssids[i].ssid, + ssid->ssid_len)) + return true; + } + } + return false; +} + +int brcmf_pno_clean(struct brcmf_if *ifp) +{ + int ret; + + /* Disable pfn */ + ret = brcmf_fil_iovar_int_set(ifp, "pfn", 0); + if (ret == 0) { + /* clear pfn */ + ret = brcmf_fil_iovar_data_set(ifp, "pfnclear", NULL, 0); + } + if (ret < 0) + brcmf_err("failed code %d\n", ret); + + return ret; +} + +int brcmf_pno_start_sched_scan(struct brcmf_if *ifp, + struct cfg80211_sched_scan_request *req) +{ + struct brcmu_d11inf *d11inf; + struct brcmf_pno_config_le pno_cfg; + struct cfg80211_ssid *ssid; + u16 chan; + int i, ret; + + /* clean up everything */ + ret = brcmf_pno_clean(ifp); + if (ret < 0) { + brcmf_err("failed error=%d\n", ret); + return ret; + } + + /* 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; + } + + /* configure channels to use */ + d11inf = &ifp->drvr->config->d11inf; + for (i = 0; i < req->n_channels; i++) { + chan = req->channels[i]->hw_value; + pno_cfg.channel_list[i] = cpu_to_le16(chan); + } + if (req->n_channels) { + pno_cfg.channel_num = cpu_to_le32(req->n_channels); + brcmf_pno_channel_config(ifp, &pno_cfg); + } + + /* 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; + } + + 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); + } + /* Enable the PNO */ + ret = brcmf_fil_iovar_int_set(ifp, "pfn", 1); + if (ret < 0) + brcmf_err("PNO enable failed!! ret=%d\n", ret); + + return ret; +} + |