diff options
Diffstat (limited to 'net/mac80211/util.c')
| -rw-r--r-- | net/mac80211/util.c | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 92ea1770461b..dee17e5cbb89 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -750,6 +750,27 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata) local->ops->conf_tx(local_to_hw(local), i, &qparam); } +void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, + const size_t supp_rates_len, + const u8 *supp_rates) +{ + struct ieee80211_local *local = sdata->local; + int i, have_higher_than_11mbit = 0; + + /* cf. IEEE 802.11 9.2.12 */ + for (i = 0; i < supp_rates_len; i++) + if ((supp_rates[i] & 0x7f) * 5 > 110) + have_higher_than_11mbit = 1; + + if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && + have_higher_than_11mbit) + sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; + else + sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; + + ieee80211_set_wmm_default(sdata); +} + void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, int encrypt) { @@ -816,3 +837,158 @@ u32 ieee80211_mandatory_rates(struct ieee80211_local *local, mandatory_rates |= BIT(i); return mandatory_rates; } + +void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, + u16 transaction, u16 auth_alg, + u8 *extra, size_t extra_len, + const u8 *bssid, int encrypt) +{ + struct ieee80211_local *local = sdata->local; + struct sk_buff *skb; + struct ieee80211_mgmt *mgmt; + const u8 *ie_auth = NULL; + int ie_auth_len = 0; + + if (sdata->vif.type == NL80211_IFTYPE_STATION) { + ie_auth_len = sdata->u.mgd.ie_auth_len; + ie_auth = sdata->u.mgd.ie_auth; + } + + skb = dev_alloc_skb(local->hw.extra_tx_headroom + + sizeof(*mgmt) + 6 + extra_len + ie_auth_len); + if (!skb) { + printk(KERN_DEBUG "%s: failed to allocate buffer for auth " + "frame\n", sdata->dev->name); + return; + } + skb_reserve(skb, local->hw.extra_tx_headroom); + + mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); + memset(mgmt, 0, 24 + 6); + mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | + IEEE80211_STYPE_AUTH); + if (encrypt) + mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); + memcpy(mgmt->da, bssid, ETH_ALEN); + memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); + memcpy(mgmt->bssid, bssid, ETH_ALEN); + mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); + mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); + mgmt->u.auth.status_code = cpu_to_le16(0); + if (extra) + memcpy(skb_put(skb, extra_len), extra, extra_len); + if (ie_auth) + memcpy(skb_put(skb, ie_auth_len), ie_auth, ie_auth_len); + + ieee80211_tx_skb(sdata, skb, encrypt); +} + +void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, + u8 *ssid, size_t ssid_len) +{ + struct ieee80211_local *local = sdata->local; + struct ieee80211_supported_band *sband; + struct sk_buff *skb; + struct ieee80211_mgmt *mgmt; + u8 *pos, *supp_rates, *esupp_rates = NULL, *extra_preq_ie = NULL; + int i, extra_preq_ie_len = 0; + + switch (sdata->vif.type) { + case NL80211_IFTYPE_STATION: + extra_preq_ie_len = sdata->u.mgd.ie_probereq_len; + extra_preq_ie = sdata->u.mgd.ie_probereq; + break; + default: + break; + } + + skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200 + + extra_preq_ie_len); + if (!skb) { + printk(KERN_DEBUG "%s: failed to allocate buffer for probe " + "request\n", sdata->dev->name); + return; + } + skb_reserve(skb, local->hw.extra_tx_headroom); + + mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); + memset(mgmt, 0, 24); + mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | + IEEE80211_STYPE_PROBE_REQ); + memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); + if (dst) { + memcpy(mgmt->da, dst, ETH_ALEN); + memcpy(mgmt->bssid, dst, ETH_ALEN); + } else { + memset(mgmt->da, 0xff, ETH_ALEN); + memset(mgmt->bssid, 0xff, ETH_ALEN); + } + pos = skb_put(skb, 2 + ssid_len); + *pos++ = WLAN_EID_SSID; + *pos++ = ssid_len; + memcpy(pos, ssid, ssid_len); + + supp_rates = skb_put(skb, 2); + supp_rates[0] = WLAN_EID_SUPP_RATES; + supp_rates[1] = 0; + sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; + + for (i = 0; i < sband->n_bitrates; i++) { + struct ieee80211_rate *rate = &sband->bitrates[i]; + if (esupp_rates) { + pos = skb_put(skb, 1); + esupp_rates[1]++; + } else if (supp_rates[1] == 8) { + esupp_rates = skb_put(skb, 3); + esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES; + esupp_rates[1] = 1; + pos = &esupp_rates[2]; + } else { + pos = skb_put(skb, 1); + supp_rates[1]++; + } + *pos = rate->bitrate / 5; + } + + if (extra_preq_ie) + memcpy(skb_put(skb, extra_preq_ie_len), extra_preq_ie, + extra_preq_ie_len); + + ieee80211_tx_skb(sdata, skb, 0); +} + +u32 ieee80211_sta_get_rates(struct ieee80211_local *local, + struct ieee802_11_elems *elems, + enum ieee80211_band band) +{ + struct ieee80211_supported_band *sband; + struct ieee80211_rate *bitrates; + size_t num_rates; + u32 supp_rates; + int i, j; + sband = local->hw.wiphy->bands[band]; + + if (!sband) { + WARN_ON(1); + sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; + } + + bitrates = sband->bitrates; + num_rates = sband->n_bitrates; + supp_rates = 0; + for (i = 0; i < elems->supp_rates_len + + elems->ext_supp_rates_len; i++) { + u8 rate = 0; + int own_rate; + if (i < elems->supp_rates_len) + rate = elems->supp_rates[i]; + else if (elems->ext_supp_rates) + rate = elems->ext_supp_rates + [i - elems->supp_rates_len]; + own_rate = 5 * (rate & 0x7f); + for (j = 0; j < num_rates; j++) + if (bitrates[j].bitrate == own_rate) + supp_rates |= BIT(j); + } + return supp_rates; +} |