diff options
Diffstat (limited to 'net/mac80211/util.c')
| -rw-r--r-- | net/mac80211/util.c | 328 |
1 files changed, 295 insertions, 33 deletions
diff --git a/net/mac80211/util.c b/net/mac80211/util.c index d5230ecc784..9919892575f 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -20,6 +20,7 @@ #include <linux/etherdevice.h> #include <linux/if_arp.h> #include <linux/bitmap.h> +#include <linux/crc32.h> #include <net/net_namespace.h> #include <net/cfg80211.h> #include <net/rtnetlink.h> @@ -96,13 +97,13 @@ u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx) { - struct sk_buff *skb = tx->skb; + struct sk_buff *skb; struct ieee80211_hdr *hdr; - do { + skb_queue_walk(&tx->skbs, skb) { hdr = (struct ieee80211_hdr *) skb->data; hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); - } while ((skb = skb->next)); + } } int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, @@ -564,6 +565,172 @@ void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, } EXPORT_SYMBOL(ieee80211_queue_delayed_work); +u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, + struct ieee802_11_elems *elems, + u64 filter, u32 crc) +{ + size_t left = len; + u8 *pos = start; + bool calc_crc = filter != 0; + + memset(elems, 0, sizeof(*elems)); + elems->ie_start = start; + elems->total_len = len; + + while (left >= 2) { + u8 id, elen; + + id = *pos++; + elen = *pos++; + left -= 2; + + if (elen > left) + break; + + if (calc_crc && id < 64 && (filter & (1ULL << id))) + crc = crc32_be(crc, pos - 2, elen + 2); + + switch (id) { + case WLAN_EID_SSID: + elems->ssid = pos; + elems->ssid_len = elen; + break; + case WLAN_EID_SUPP_RATES: + elems->supp_rates = pos; + elems->supp_rates_len = elen; + break; + case WLAN_EID_FH_PARAMS: + elems->fh_params = pos; + elems->fh_params_len = elen; + break; + case WLAN_EID_DS_PARAMS: + elems->ds_params = pos; + elems->ds_params_len = elen; + break; + case WLAN_EID_CF_PARAMS: + elems->cf_params = pos; + elems->cf_params_len = elen; + break; + case WLAN_EID_TIM: + if (elen >= sizeof(struct ieee80211_tim_ie)) { + elems->tim = (void *)pos; + elems->tim_len = elen; + } + break; + case WLAN_EID_IBSS_PARAMS: + elems->ibss_params = pos; + elems->ibss_params_len = elen; + break; + case WLAN_EID_CHALLENGE: + elems->challenge = pos; + elems->challenge_len = elen; + break; + case WLAN_EID_VENDOR_SPECIFIC: + if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && + pos[2] == 0xf2) { + /* Microsoft OUI (00:50:F2) */ + + if (calc_crc) + crc = crc32_be(crc, pos - 2, elen + 2); + + if (pos[3] == 1) { + /* OUI Type 1 - WPA IE */ + elems->wpa = pos; + elems->wpa_len = elen; + } else if (elen >= 5 && pos[3] == 2) { + /* OUI Type 2 - WMM IE */ + if (pos[4] == 0) { + elems->wmm_info = pos; + elems->wmm_info_len = elen; + } else if (pos[4] == 1) { + elems->wmm_param = pos; + elems->wmm_param_len = elen; + } + } + } + break; + case WLAN_EID_RSN: + elems->rsn = pos; + elems->rsn_len = elen; + break; + case WLAN_EID_ERP_INFO: + elems->erp_info = pos; + elems->erp_info_len = elen; + break; + case WLAN_EID_EXT_SUPP_RATES: + elems->ext_supp_rates = pos; + elems->ext_supp_rates_len = elen; + break; + case WLAN_EID_HT_CAPABILITY: + if (elen >= sizeof(struct ieee80211_ht_cap)) + elems->ht_cap_elem = (void *)pos; + break; + case WLAN_EID_HT_INFORMATION: + if (elen >= sizeof(struct ieee80211_ht_info)) + elems->ht_info_elem = (void *)pos; + break; + case WLAN_EID_MESH_ID: + elems->mesh_id = pos; + elems->mesh_id_len = elen; + break; + case WLAN_EID_MESH_CONFIG: + if (elen >= sizeof(struct ieee80211_meshconf_ie)) + elems->mesh_config = (void *)pos; + break; + case WLAN_EID_PEER_MGMT: + elems->peering = pos; + elems->peering_len = elen; + break; + case WLAN_EID_PREQ: + elems->preq = pos; + elems->preq_len = elen; + break; + case WLAN_EID_PREP: + elems->prep = pos; + elems->prep_len = elen; + break; + case WLAN_EID_PERR: + elems->perr = pos; + elems->perr_len = elen; + break; + case WLAN_EID_RANN: + if (elen >= sizeof(struct ieee80211_rann_ie)) + elems->rann = (void *)pos; + break; + case WLAN_EID_CHANNEL_SWITCH: + elems->ch_switch_elem = pos; + elems->ch_switch_elem_len = elen; + break; + case WLAN_EID_QUIET: + if (!elems->quiet_elem) { + elems->quiet_elem = pos; + elems->quiet_elem_len = elen; + } + elems->num_of_quiet_elem++; + break; + case WLAN_EID_COUNTRY: + elems->country_elem = pos; + elems->country_elem_len = elen; + break; + case WLAN_EID_PWR_CONSTRAINT: + elems->pwr_constr_elem = pos; + elems->pwr_constr_elem_len = elen; + break; + case WLAN_EID_TIMEOUT_INTERVAL: + elems->timeout_int = pos; + elems->timeout_int_len = elen; + break; + default: + break; + } + + left -= elen; + pos += elen; + } + + return crc; +} + void ieee802_11_parse_elems(u8 *start, size_t len, struct ieee802_11_elems *elems) { @@ -812,23 +979,9 @@ int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, offset = noffset; } - if (sband->ht_cap.ht_supported) { - u16 cap = sband->ht_cap.cap; - __le16 tmp; - - *pos++ = WLAN_EID_HT_CAPABILITY; - *pos++ = sizeof(struct ieee80211_ht_cap); - memset(pos, 0, sizeof(struct ieee80211_ht_cap)); - tmp = cpu_to_le16(cap); - memcpy(pos, &tmp, sizeof(u16)); - pos += sizeof(u16); - *pos++ = sband->ht_cap.ampdu_factor | - (sband->ht_cap.ampdu_density << - IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); - memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs)); - pos += sizeof(sband->ht_cap.mcs); - pos += 2 + 4 + 1; /* ext info, BF cap, antsel */ - } + if (sband->ht_cap.ht_supported) + pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, + sband->ht_cap.cap); /* * If adding more here, adjust code in main.c @@ -989,16 +1142,6 @@ int ieee80211_reconfig(struct ieee80211_local *local) */ } #endif - - /* setup fragmentation threshold */ - drv_set_frag_threshold(local, hw->wiphy->frag_threshold); - - /* setup RTS threshold */ - drv_set_rts_threshold(local, hw->wiphy->rts_threshold); - - /* reset coverage class */ - drv_set_coverage_class(local, hw->wiphy->coverage_class); - /* everything else happens only if HW was up & running */ if (!local->open_count) goto wake_up; @@ -1017,6 +1160,15 @@ int ieee80211_reconfig(struct ieee80211_local *local) return res; } + /* setup fragmentation threshold */ + drv_set_frag_threshold(local, hw->wiphy->frag_threshold); + + /* setup RTS threshold */ + drv_set_rts_threshold(local, hw->wiphy->rts_threshold); + + /* reset coverage class */ + drv_set_coverage_class(local, hw->wiphy->coverage_class); + ieee80211_led_radio(local, true); ieee80211_mod_tpt_led_trig(local, IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); @@ -1026,7 +1178,7 @@ int ieee80211_reconfig(struct ieee80211_local *local) if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && sdata->vif.type != NL80211_IFTYPE_MONITOR && ieee80211_sdata_running(sdata)) - res = drv_add_interface(local, &sdata->vif); + res = drv_add_interface(local, sdata); } /* add STAs back */ @@ -1076,11 +1228,13 @@ int ieee80211_reconfig(struct ieee80211_local *local) BSS_CHANGED_BEACON_INT | BSS_CHANGED_BSSID | BSS_CHANGED_CQM | - BSS_CHANGED_QOS; + BSS_CHANGED_QOS | + BSS_CHANGED_IDLE; switch (sdata->vif.type) { case NL80211_IFTYPE_STATION: - changed |= BSS_CHANGED_ASSOC; + changed |= BSS_CHANGED_ASSOC | + BSS_CHANGED_ARP_FILTER; mutex_lock(&sdata->u.mgd.mtx); ieee80211_bss_info_change_notify(sdata, changed); mutex_unlock(&sdata->u.mgd.mtx); @@ -1090,6 +1244,10 @@ int ieee80211_reconfig(struct ieee80211_local *local) /* fall through */ case NL80211_IFTYPE_AP: changed |= BSS_CHANGED_SSID; + + if (sdata->vif.type == NL80211_IFTYPE_AP) + changed |= BSS_CHANGED_AP_PROBE_RESP; + /* fall through */ case NL80211_IFTYPE_MESH_POINT: changed |= BSS_CHANGED_BEACON | @@ -1111,6 +1269,8 @@ int ieee80211_reconfig(struct ieee80211_local *local) } } + ieee80211_recalc_ps(local, -1); + /* * Clear the WLAN_STA_BLOCK_BA flag so new aggregation * sessions can be established after a resume. @@ -1366,6 +1526,108 @@ void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif) } EXPORT_SYMBOL(ieee80211_disable_rssi_reports); +u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, + u16 cap) +{ + __le16 tmp; + + *pos++ = WLAN_EID_HT_CAPABILITY; + *pos++ = sizeof(struct ieee80211_ht_cap); + memset(pos, 0, sizeof(struct ieee80211_ht_cap)); + + /* capability flags */ + tmp = cpu_to_le16(cap); + memcpy(pos, &tmp, sizeof(u16)); + pos += sizeof(u16); + + /* AMPDU parameters */ + *pos++ = ht_cap->ampdu_factor | + (ht_cap->ampdu_density << + IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); + + /* MCS set */ + memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); + pos += sizeof(ht_cap->mcs); + + /* extended capabilities */ + pos += sizeof(__le16); + + /* BF capabilities */ + pos += sizeof(__le32); + + /* antenna selection */ + pos += sizeof(u8); + + return pos; +} + +u8 *ieee80211_ie_build_ht_info(u8 *pos, + struct ieee80211_sta_ht_cap *ht_cap, + struct ieee80211_channel *channel, + enum nl80211_channel_type channel_type) +{ + struct ieee80211_ht_info *ht_info; + /* Build HT Information */ + *pos++ = WLAN_EID_HT_INFORMATION; + *pos++ = sizeof(struct ieee80211_ht_info); + ht_info = (struct ieee80211_ht_info *)pos; + ht_info->control_chan = + ieee80211_frequency_to_channel(channel->center_freq); + switch (channel_type) { + case NL80211_CHAN_HT40MINUS: + ht_info->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; + break; + case NL80211_CHAN_HT40PLUS: + ht_info->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; + break; + case NL80211_CHAN_HT20: + default: + ht_info->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; + break; + } + if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) + ht_info->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; + + /* + * Note: According to 802.11n-2009 9.13.3.1, HT Protection field and + * RIFS Mode are reserved in IBSS mode, therefore keep them at 0 + */ + ht_info->operation_mode = 0x0000; + ht_info->stbc_param = 0x0000; + + /* It seems that Basic MCS set and Supported MCS set + are identical for the first 10 bytes */ + memset(&ht_info->basic_set, 0, 16); + memcpy(&ht_info->basic_set, &ht_cap->mcs, 10); + + return pos + sizeof(struct ieee80211_ht_info); +} + +enum nl80211_channel_type +ieee80211_ht_info_to_channel_type(struct ieee80211_ht_info *ht_info) +{ + enum nl80211_channel_type channel_type; + + if (!ht_info) + return NL80211_CHAN_NO_HT; + + switch (ht_info->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { + case IEEE80211_HT_PARAM_CHA_SEC_NONE: + channel_type = NL80211_CHAN_HT20; + break; + case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: + channel_type = NL80211_CHAN_HT40PLUS; + break; + case IEEE80211_HT_PARAM_CHA_SEC_BELOW: + channel_type = NL80211_CHAN_HT40MINUS; + break; + default: + channel_type = NL80211_CHAN_NO_HT; + } + + return channel_type; +} + int ieee80211_add_srates_ie(struct ieee80211_vif *vif, struct sk_buff *skb) { struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); |