diff options
Diffstat (limited to 'net/mac80211/util.c')
| -rw-r--r-- | net/mac80211/util.c | 124 |
1 files changed, 121 insertions, 3 deletions
diff --git a/net/mac80211/util.c b/net/mac80211/util.c index aefb9d5b9620..592a18171f95 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -300,9 +300,6 @@ void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue) if (!sdata->dev) continue; - if (test_bit(SDATA_STATE_OFFCHANNEL, &sdata->state)) - continue; - if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE && local->queue_stop_reasons[sdata->vif.cab_queue] != 0) continue; @@ -743,6 +740,7 @@ u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, case WLAN_EID_TIMEOUT_INTERVAL: case WLAN_EID_SECONDARY_CHANNEL_OFFSET: case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: + case WLAN_EID_CHAN_SWITCH_PARAM: /* * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible * that if the content gets bigger it might be needed more than once @@ -908,6 +906,14 @@ u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, } elems->sec_chan_offs = (void *)pos; break; + case WLAN_EID_CHAN_SWITCH_PARAM: + if (elen != + sizeof(*elems->mesh_chansw_params_ie)) { + elem_parse_failed = true; + break; + } + elems->mesh_chansw_params_ie = (void *)pos; + break; case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: if (!action || elen != sizeof(*elems->wide_bw_chansw_ie)) { @@ -2354,3 +2360,115 @@ u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c) return ret; } + +/* + * Returns true if smps_mode_new is strictly more restrictive than + * smps_mode_old. + */ +bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, + enum ieee80211_smps_mode smps_mode_new) +{ + if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC || + smps_mode_new == IEEE80211_SMPS_AUTOMATIC)) + return false; + + switch (smps_mode_old) { + case IEEE80211_SMPS_STATIC: + return false; + case IEEE80211_SMPS_DYNAMIC: + return smps_mode_new == IEEE80211_SMPS_STATIC; + case IEEE80211_SMPS_OFF: + return smps_mode_new != IEEE80211_SMPS_OFF; + default: + WARN_ON(1); + } + + return false; +} + +int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, + struct cfg80211_csa_settings *csa_settings) +{ + struct sk_buff *skb; + struct ieee80211_mgmt *mgmt; + struct ieee80211_local *local = sdata->local; + int freq; + int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.chan_switch) + + sizeof(mgmt->u.action.u.chan_switch); + u8 *pos; + + if (sdata->vif.type != NL80211_IFTYPE_ADHOC && + sdata->vif.type != NL80211_IFTYPE_MESH_POINT) + return -EOPNOTSUPP; + + skb = dev_alloc_skb(local->tx_headroom + hdr_len + + 5 + /* channel switch announcement element */ + 3 + /* secondary channel offset element */ + 8); /* mesh channel switch parameters element */ + if (!skb) + return -ENOMEM; + + skb_reserve(skb, local->tx_headroom); + mgmt = (struct ieee80211_mgmt *)skb_put(skb, hdr_len); + memset(mgmt, 0, hdr_len); + mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | + IEEE80211_STYPE_ACTION); + + eth_broadcast_addr(mgmt->da); + memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); + if (ieee80211_vif_is_mesh(&sdata->vif)) { + memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); + } else { + struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; + memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); + } + mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; + mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH; + pos = skb_put(skb, 5); + *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */ + *pos++ = 3; /* IE length */ + *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */ + freq = csa_settings->chandef.chan->center_freq; + *pos++ = ieee80211_frequency_to_channel(freq); /* channel */ + *pos++ = csa_settings->count; /* count */ + + if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) { + enum nl80211_channel_type ch_type; + + skb_put(skb, 3); + *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */ + *pos++ = 1; /* IE length */ + ch_type = cfg80211_get_chandef_type(&csa_settings->chandef); + if (ch_type == NL80211_CHAN_HT40PLUS) + *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; + else + *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW; + } + + if (ieee80211_vif_is_mesh(&sdata->vif)) { + struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; + __le16 pre_value; + + skb_put(skb, 8); + *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */ + *pos++ = 6; /* IE length */ + *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */ + *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */ + *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR; + *pos++ |= csa_settings->block_tx ? + WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00; + put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */ + pos += 2; + if (!ifmsh->pre_value) + ifmsh->pre_value = 1; + else + ifmsh->pre_value++; + pre_value = cpu_to_le16(ifmsh->pre_value); + memcpy(pos, &pre_value, 2); /* Precedence Value */ + pos += 2; + ifmsh->chsw_init = true; + } + + ieee80211_tx_skb(sdata, skb); + return 0; +} |