diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/mac80211/ieee80211_i.h | 8 | ||||
| -rw-r--r-- | net/mac80211/ieee80211_sta.c | 89 |
2 files changed, 94 insertions, 3 deletions
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index e2aed0b2d8be..982f99672994 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -89,6 +89,8 @@ struct ieee80211_sta_bss { size_t rsn_ie_len; u8 *wmm_ie; size_t wmm_ie_len; + u8 *ht_ie; + size_t ht_ie_len; #define IEEE80211_MAX_SUPP_RATES 32 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; size_t supp_rates_len; @@ -759,7 +761,11 @@ int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason); int ieee80211_sta_disassociate(struct net_device *dev, u16 reason); void ieee80211_erp_info_change_notify(struct net_device *dev, u8 changes); void ieee80211_reset_erp_info(struct net_device *dev); - +int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie, + struct ieee80211_ht_info *ht_info); +int ieee80211_ht_addt_info_ie_to_ht_bss_info( + struct ieee80211_ht_addt_info *ht_add_info_ie, + struct ieee80211_ht_bss_info *bss_info); /* ieee80211_iface.c */ int ieee80211_if_add(struct net_device *dev, const char *name, struct net_device **new_dev, int type); diff --git a/net/mac80211/ieee80211_sta.c b/net/mac80211/ieee80211_sta.c index 231a663ad914..1f47afeb925d 100644 --- a/net/mac80211/ieee80211_sta.c +++ b/net/mac80211/ieee80211_sta.c @@ -90,7 +90,8 @@ struct ieee802_11_elems { u8 *ext_supp_rates; u8 *wmm_info; u8 *wmm_param; - + u8 *ht_cap_elem; + u8 *ht_info_elem; /* length of them, respectively */ u8 ssid_len; u8 supp_rates_len; @@ -106,6 +107,8 @@ struct ieee802_11_elems { u8 ext_supp_rates_len; u8 wmm_info_len; u8 wmm_param_len; + u8 ht_cap_elem_len; + u8 ht_info_elem_len; }; static void ieee802_11_parse_elems(u8 *start, size_t len, @@ -190,6 +193,14 @@ static void ieee802_11_parse_elems(u8 *start, size_t len, elems->ext_supp_rates = pos; elems->ext_supp_rates_len = elen; break; + case WLAN_EID_HT_CAPABILITY: + elems->ht_cap_elem = pos; + elems->ht_cap_elem_len = elen; + break; + case WLAN_EID_HT_EXTRA_INFO: + elems->ht_info_elem = pos; + elems->ht_info_elem_len = elen; + break; default: break; } @@ -332,6 +343,51 @@ static void ieee80211_handle_erp_ie(struct net_device *dev, u8 erp_value) ieee80211_erp_info_change_notify(dev, changes); } +int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie, + struct ieee80211_ht_info *ht_info) +{ + + if (ht_info == NULL) + return -EINVAL; + + memset(ht_info, 0, sizeof(*ht_info)); + + if (ht_cap_ie) { + u8 ampdu_info = ht_cap_ie->ampdu_params_info; + + ht_info->ht_supported = 1; + ht_info->cap = le16_to_cpu(ht_cap_ie->cap_info); + ht_info->ampdu_factor = + ampdu_info & IEEE80211_HT_CAP_AMPDU_FACTOR; + ht_info->ampdu_density = + (ampdu_info & IEEE80211_HT_CAP_AMPDU_DENSITY) >> 2; + memcpy(ht_info->supp_mcs_set, ht_cap_ie->supp_mcs_set, 16); + } else + ht_info->ht_supported = 0; + + return 0; +} + +int ieee80211_ht_addt_info_ie_to_ht_bss_info( + struct ieee80211_ht_addt_info *ht_add_info_ie, + struct ieee80211_ht_bss_info *bss_info) +{ + if (bss_info == NULL) + return -EINVAL; + + memset(bss_info, 0, sizeof(*bss_info)); + + if (ht_add_info_ie) { + u16 op_mode; + op_mode = le16_to_cpu(ht_add_info_ie->operation_mode); + + bss_info->primary_channel = ht_add_info_ie->control_chan; + bss_info->bss_cap = ht_add_info_ie->ht_param; + bss_info->bss_op_mode = (u8)(op_mode & 0xff); + } + + return 0; +} static void ieee80211_sta_send_associnfo(struct net_device *dev, struct ieee80211_if_sta *ifsta) @@ -630,6 +686,19 @@ static void ieee80211_send_assoc(struct net_device *dev, *pos++ = 1; /* WME ver */ *pos++ = 0; } + /* wmm support is a must to HT */ + if (wmm && mode->ht_info.ht_supported) { + __le16 tmp = cpu_to_le16(mode->ht_info.cap); + pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2); + *pos++ = WLAN_EID_HT_CAPABILITY; + *pos++ = sizeof(struct ieee80211_ht_cap); + memset(pos, 0, sizeof(struct ieee80211_ht_cap)); + memcpy(pos, &tmp, sizeof(u16)); + pos += sizeof(u16); + *pos++ = (mode->ht_info.ampdu_factor | + (mode->ht_info.ampdu_density << 2)); + memcpy(pos, mode->ht_info.supp_mcs_set, 16); + } kfree(ifsta->assocreq_ies); ifsta->assocreq_ies_len = (skb->data + skb->len) - ies; @@ -1380,6 +1449,7 @@ static void ieee80211_rx_bss_free(struct ieee80211_sta_bss *bss) kfree(bss->wpa_ie); kfree(bss->rsn_ie); kfree(bss->wmm_ie); + kfree(bss->ht_ie); kfree(bss); } @@ -1637,7 +1707,22 @@ static void ieee80211_rx_bss_info(struct net_device *dev, bss->wmm_ie = NULL; bss->wmm_ie_len = 0; } - + if (elems.ht_cap_elem && + (!bss->ht_ie || bss->ht_ie_len != elems.ht_cap_elem_len || + memcmp(bss->ht_ie, elems.ht_cap_elem, elems.ht_cap_elem_len))) { + kfree(bss->ht_ie); + bss->ht_ie = kmalloc(elems.ht_cap_elem_len + 2, GFP_ATOMIC); + if (bss->ht_ie) { + memcpy(bss->ht_ie, elems.ht_cap_elem - 2, + elems.ht_cap_elem_len + 2); + bss->ht_ie_len = elems.ht_cap_elem_len + 2; + } else + bss->ht_ie_len = 0; + } else if (!elems.ht_cap_elem && bss->ht_ie) { + kfree(bss->ht_ie); + bss->ht_ie = NULL; + bss->ht_ie_len = 0; + } bss->hw_mode = rx_status->phymode; bss->freq = rx_status->freq; |