diff --git a/hostapd/config_file.c b/hostapd/config_file.c index a157a74d3..6f525d921 100644 --- a/hostapd/config_file.c +++ b/hostapd/config_file.c @@ -2826,6 +2826,8 @@ static int hostapd_config_fill(struct hostapd_config *conf, line); return 1; } + } else if (os_strcmp(buf, "use_driver_iface_addr") == 0) { + conf->use_driver_iface_addr = atoi(pos); #ifdef CONFIG_IEEE80211W } else if (os_strcmp(buf, "ieee80211w") == 0) { bss->ieee80211w = atoi(pos); diff --git a/hostapd/hostapd.conf b/hostapd/hostapd.conf index 3d5c5e2c6..d943a43d1 100644 --- a/hostapd/hostapd.conf +++ b/hostapd/hostapd.conf @@ -1926,6 +1926,10 @@ own_ip_addr=127.0.0.1 # - is not the same as the MAC address of the radio # - is not the same as any other explicitly specified BSSID # +# Alternatively, the 'use_driver_iface_addr' parameter can be used to request +# hostapd to use the driver auto-generated interface address (e.g., to use the +# exact MAC addresses allocated to the device). +# # Not all drivers support multiple BSSes. The exact mechanism for determining # the driver capabilities is driver specific. With the current (i.e., a recent # kernel) drivers using nl80211, this information can be checked with "iw list" diff --git a/src/ap/ap_config.h b/src/ap/ap_config.h index f19cac6cf..2d07c67b3 100644 --- a/src/ap/ap_config.h +++ b/src/ap/ap_config.h @@ -665,6 +665,9 @@ struct hostapd_config { u8 vht_oper_centr_freq_seg0_idx; u8 vht_oper_centr_freq_seg1_idx; + /* Use driver-generated interface addresses when adding multiple BSSs */ + u8 use_driver_iface_addr; + #ifdef CONFIG_FST struct fst_iface_cfg fst_cfg; #endif /* CONFIG_FST */ diff --git a/src/ap/hostapd.c b/src/ap/hostapd.c index 9aaa9a6b3..55ca9e8f9 100644 --- a/src/ap/hostapd.c +++ b/src/ap/hostapd.c @@ -512,6 +512,9 @@ static int hostapd_validate_bssid_configuration(struct hostapd_iface *iface) if (hostapd_drv_none(hapd)) return 0; + if (iface->conf->use_driver_iface_addr) + return 0; + /* Generate BSSID mask that is large enough to cover the BSSIDs. */ /* Determine the bits necessary to cover the number of BSSIDs. */ @@ -905,12 +908,9 @@ static int hostapd_setup_bss(struct hostapd_data *hapd, int first) hapd->started = 1; if (!first || first == -1) { - if (is_zero_ether_addr(conf->bssid)) { - /* Allocate the next available BSSID. */ - do { - inc_byte_array(hapd->own_addr, ETH_ALEN); - } while (mac_in_conf(hapd->iconf, hapd->own_addr)); - } else { + u8 *addr = hapd->own_addr; + + if (!is_zero_ether_addr(conf->bssid)) { /* Allocate the configured BSSID. */ os_memcpy(hapd->own_addr, conf->bssid, ETH_ALEN); @@ -922,11 +922,18 @@ static int hostapd_setup_bss(struct hostapd_data *hapd, int first) "the radio", conf->iface); return -1; } + } else if (hapd->iconf->use_driver_iface_addr) { + addr = NULL; + } else { + /* Allocate the next available BSSID. */ + do { + inc_byte_array(hapd->own_addr, ETH_ALEN); + } while (mac_in_conf(hapd->iconf, hapd->own_addr)); } hapd->interface_added = 1; if (hostapd_if_add(hapd->iface->bss[0], WPA_IF_AP_BSS, - conf->iface, hapd->own_addr, hapd, + conf->iface, addr, hapd, &hapd->drv_priv, force_ifname, if_addr, conf->bridge[0] ? conf->bridge : NULL, first == -1)) { @@ -935,6 +942,9 @@ static int hostapd_setup_bss(struct hostapd_data *hapd, int first) hapd->interface_added = 0; return -1; } + + if (!addr) + os_memcpy(hapd->own_addr, if_addr, ETH_ALEN); } if (conf->wmm_enabled < 0)