forked from Minki/linux
brcmfmac: Add support for scheduled scan mac randomization
Scheduled scan be requested to use mac randomization. This patch checks the flags and enables the randomization if desired. Reviewed-by: Arend Van Spriel <arend@broadcom.com> Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com> Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com> Signed-off-by: Hante Meuleman <meuleman@broadcom.com> Signed-off-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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@ -3544,9 +3544,14 @@ static int brcmf_dev_pno_clean(struct net_device *ndev)
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return ret;
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}
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static int brcmf_dev_pno_config(struct net_device *ndev)
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static int brcmf_dev_pno_config(struct brcmf_if *ifp,
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struct cfg80211_sched_scan_request *request)
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{
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struct brcmf_pno_param_le pfn_param;
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struct brcmf_pno_macaddr_le pfn_mac;
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s32 err;
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u8 *mac_mask;
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int i;
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memset(&pfn_param, 0, sizeof(pfn_param));
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pfn_param.version = cpu_to_le32(BRCMF_PNO_VERSION);
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@ -3559,8 +3564,37 @@ static int brcmf_dev_pno_config(struct net_device *ndev)
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/* set up pno scan fr */
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pfn_param.scan_freq = cpu_to_le32(BRCMF_PNO_TIME);
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return brcmf_fil_iovar_data_set(netdev_priv(ndev), "pfn_set",
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&pfn_param, sizeof(pfn_param));
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err = brcmf_fil_iovar_data_set(ifp, "pfn_set", &pfn_param,
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sizeof(pfn_param));
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if (err) {
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brcmf_err("pfn_set failed, err=%d\n", err);
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return err;
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}
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/* Find out if mac randomization should be turned on */
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if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR))
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return 0;
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pfn_mac.version = BRCMF_PFN_MACADDR_CFG_VER;
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pfn_mac.flags = BRCMF_PFN_MAC_OUI_ONLY | BRCMF_PFN_SET_MAC_UNASSOC;
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memcpy(pfn_mac.mac, request->mac_addr, ETH_ALEN);
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mac_mask = request->mac_addr_mask;
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for (i = 0; i < ETH_ALEN; i++) {
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pfn_mac.mac[i] &= mac_mask[i];
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pfn_mac.mac[i] |= get_random_int() & ~(mac_mask[i]);
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}
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/* Clear multi bit */
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pfn_mac.mac[0] &= 0xFE;
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/* Set locally administered */
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pfn_mac.mac[0] |= 0x02;
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err = brcmf_fil_iovar_data_set(ifp, "pfn_macaddr", &pfn_mac,
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sizeof(pfn_mac));
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if (err)
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brcmf_err("pfn_macaddr failed, err=%d\n", err);
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return err;
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}
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static int
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@ -3614,11 +3648,8 @@ brcmf_cfg80211_sched_scan_start(struct wiphy *wiphy,
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}
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/* configure pno */
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ret = brcmf_dev_pno_config(ndev);
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if (ret < 0) {
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brcmf_err("PNO setup failed!! ret=%d\n", ret);
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if (brcmf_dev_pno_config(ifp, request))
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return -EINVAL;
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}
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/* configure each match set */
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for (i = 0; i < request->n_match_sets; i++) {
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@ -6455,6 +6486,15 @@ struct brcmf_cfg80211_info *brcmf_cfg80211_attach(struct brcmf_pub *drvr,
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goto wiphy_unreg_out;
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}
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/* Fill in some of the advertised nl80211 supported features */
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if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_SCAN_RANDOM_MAC)) {
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wiphy->features |= NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
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#ifdef CONFIG_PM
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if (wiphy->wowlan->flags & WIPHY_WOWLAN_NET_DETECT)
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wiphy->features |= NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
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#endif
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}
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return cfg;
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wiphy_unreg_out:
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@ -18,10 +18,12 @@
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#include <linux/module.h>
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#include <brcm_hw_ids.h>
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#include <brcmu_wifi.h>
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#include "core.h"
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#include "bus.h"
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#include "debug.h"
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#include "fwil.h"
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#include "fwil_types.h"
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#include "feature.h"
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@ -129,6 +131,8 @@ static void brcmf_feat_iovar_int_set(struct brcmf_if *ifp,
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void brcmf_feat_attach(struct brcmf_pub *drvr)
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{
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struct brcmf_if *ifp = brcmf_get_ifp(drvr, 0);
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struct brcmf_pno_macaddr_le pfn_mac;
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s32 err;
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brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_MCHAN, "mchan");
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brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_PNO, "pfn");
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@ -140,6 +144,12 @@ void brcmf_feat_attach(struct brcmf_pub *drvr)
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brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_RSDB, "rsdb_mode");
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brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_TDLS, "tdls_enable");
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pfn_mac.version = BRCMF_PFN_MACADDR_CFG_VER;
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err = brcmf_fil_iovar_data_get(ifp, "pfn_macaddr", &pfn_mac,
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sizeof(pfn_mac));
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if (!err)
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ifp->drvr->feat_flags |= BIT(BRCMF_FEAT_SCAN_RANDOM_MAC);
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if (brcmf_feature_disable) {
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brcmf_dbg(INFO, "Features: 0x%02x, disable: 0x%02x\n",
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ifp->drvr->feat_flags, brcmf_feature_disable);
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@ -26,6 +26,7 @@
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* P2P: peer-to-peer
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* RSDB: Real Simultaneous Dual Band
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* TDLS: Tunneled Direct Link Setup
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* SCAN_RANDOM_MAC: Random MAC during (net detect) scheduled scan.
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*/
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#define BRCMF_FEAT_LIST \
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BRCMF_FEAT_DEF(MBSS) \
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@ -34,7 +35,8 @@
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BRCMF_FEAT_DEF(WOWL) \
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BRCMF_FEAT_DEF(P2P) \
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BRCMF_FEAT_DEF(RSDB) \
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BRCMF_FEAT_DEF(TDLS)
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BRCMF_FEAT_DEF(TDLS) \
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BRCMF_FEAT_DEF(SCAN_RANDOM_MAC)
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/*
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* Quirks:
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@ -128,6 +128,10 @@
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#define BRCMF_MAXPMKID 16 /* max # PMKID cache entries */
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#define BRCMF_PFN_MACADDR_CFG_VER 1
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#define BRCMF_PFN_MAC_OUI_ONLY BIT(0)
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#define BRCMF_PFN_SET_MAC_UNASSOC BIT(1)
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/* join preference types for join_pref iovar */
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enum brcmf_join_pref_types {
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BRCMF_JOIN_PREF_RSSI = 1,
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@ -751,6 +755,19 @@ struct brcmf_pno_scanresults_le {
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__le32 count;
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};
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/**
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* struct brcmf_pno_macaddr_le - to configure PNO macaddr randomization.
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*
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* @version: PNO version identifier.
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* @flags: Flags defining how mac addrss should be used.
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* @mac: MAC address.
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*/
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struct brcmf_pno_macaddr_le {
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u8 version;
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u8 flags;
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u8 mac[ETH_ALEN];
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};
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/**
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* struct brcmf_pktcnt_le - packet counters.
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*
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