diff options
Diffstat (limited to 'net/mac80211/util.c')
| -rw-r--r-- | net/mac80211/util.c | 159 |
1 files changed, 127 insertions, 32 deletions
diff --git a/net/mac80211/util.c b/net/mac80211/util.c index d02fbfec3783..88efda7c9f8a 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -1095,6 +1095,21 @@ u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, if (elen >= sizeof(*elems->max_idle_period_ie)) elems->max_idle_period_ie = (void *)pos; break; + case WLAN_EID_EXTENSION: + if (pos[0] == WLAN_EID_EXT_HE_MU_EDCA && + elen >= (sizeof(*elems->mu_edca_param_set) + 1)) { + elems->mu_edca_param_set = (void *)&pos[1]; + } else if (pos[0] == WLAN_EID_EXT_HE_CAPABILITY) { + elems->he_cap = (void *)&pos[1]; + elems->he_cap_len = elen - 1; + } else if (pos[0] == WLAN_EID_EXT_HE_OPERATION && + elen >= sizeof(*elems->he_operation) && + elen >= ieee80211_he_oper_size(&pos[1])) { + elems->he_operation = (void *)&pos[1]; + } else if (pos[0] == WLAN_EID_EXT_UORA && elen >= 1) { + elems->uora_element = (void *)&pos[1]; + } + break; default: break; } @@ -1353,9 +1368,10 @@ static int ieee80211_build_preq_ies_band(struct ieee80211_local *local, enum nl80211_band band, u32 rate_mask, struct cfg80211_chan_def *chandef, - size_t *offset) + size_t *offset, u32 flags) { struct ieee80211_supported_band *sband; + const struct ieee80211_sta_he_cap *he_cap; u8 *pos = buffer, *end = buffer + buffer_len; size_t noffset; int supp_rates_len, i; @@ -1433,6 +1449,9 @@ static int ieee80211_build_preq_ies_band(struct ieee80211_local *local, chandef->chan->center_freq); } + if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT) + goto done; + /* insert custom IEs that go before HT */ if (ie && ie_len) { static const u8 before_ht[] = { @@ -1460,11 +1479,6 @@ static int ieee80211_build_preq_ies_band(struct ieee80211_local *local, sband->ht_cap.cap); } - /* - * If adding more here, adjust code in main.c - * that calculates local->scan_ies_len. - */ - /* insert custom IEs that go before VHT */ if (ie && ie_len) { static const u8 before_vht[] = { @@ -1507,9 +1521,43 @@ static int ieee80211_build_preq_ies_band(struct ieee80211_local *local, sband->vht_cap.cap); } + /* insert custom IEs that go before HE */ + if (ie && ie_len) { + static const u8 before_he[] = { + /* + * no need to list the ones split off before VHT + * or generated here + */ + WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS, + WLAN_EID_AP_CSN, + /* TODO: add 11ah/11aj/11ak elements */ + }; + noffset = ieee80211_ie_split(ie, ie_len, + before_he, ARRAY_SIZE(before_he), + *offset); + if (end - pos < noffset - *offset) + goto out_err; + memcpy(pos, ie + *offset, noffset - *offset); + pos += noffset - *offset; + *offset = noffset; + } + + he_cap = ieee80211_get_he_sta_cap(sband); + if (he_cap) { + pos = ieee80211_ie_build_he_cap(pos, he_cap, end); + if (!pos) + goto out_err; + } + + /* + * If adding more here, adjust code in main.c + * that calculates local->scan_ies_len. + */ + return pos - buffer; out_err: WARN_ONCE(1, "not enough space for preq IEs\n"); + done: return pos - buffer; } @@ -1518,7 +1566,8 @@ int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, struct ieee80211_scan_ies *ie_desc, const u8 *ie, size_t ie_len, u8 bands_used, u32 *rate_masks, - struct cfg80211_chan_def *chandef) + struct cfg80211_chan_def *chandef, + u32 flags) { size_t pos = 0, old_pos = 0, custom_ie_offset = 0; int i; @@ -1533,7 +1582,8 @@ int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, ie, ie_len, i, rate_masks[i], chandef, - &custom_ie_offset); + &custom_ie_offset, + flags); ie_desc->ies[i] = buffer + old_pos; ie_desc->len[i] = pos - old_pos; old_pos = pos; @@ -1561,7 +1611,7 @@ struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, struct ieee80211_channel *chan, const u8 *ssid, size_t ssid_len, const u8 *ie, size_t ie_len, - bool directed) + u32 flags) { struct ieee80211_local *local = sdata->local; struct cfg80211_chan_def chandef; @@ -1577,7 +1627,7 @@ struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, * badly-behaved APs don't respond when this parameter is included. */ chandef.width = sdata->vif.bss_conf.chandef.width; - if (directed) + if (flags & IEEE80211_PROBE_FLAG_DIRECTED) chandef.chan = NULL; else chandef.chan = chan; @@ -1591,7 +1641,7 @@ struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb), skb_tailroom(skb), &dummy_ie_desc, ie, ie_len, BIT(chan->band), - rate_masks, &chandef); + rate_masks, &chandef, flags); skb_put(skb, ies_len); if (dst) { @@ -1605,27 +1655,6 @@ struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, return skb; } -void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, - const u8 *src, const u8 *dst, - const u8 *ssid, size_t ssid_len, - const u8 *ie, size_t ie_len, - u32 ratemask, bool directed, u32 tx_flags, - struct ieee80211_channel *channel, bool scan) -{ - struct sk_buff *skb; - - skb = ieee80211_build_probe_req(sdata, src, dst, ratemask, channel, - ssid, ssid_len, - ie, ie_len, directed); - if (skb) { - IEEE80211_SKB_CB(skb)->flags |= tx_flags; - if (scan) - ieee80211_tx_skb_tid_band(sdata, skb, 7, channel->band); - else - ieee80211_tx_skb(sdata, skb); - } -} - u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, struct ieee802_11_elems *elems, enum nl80211_band band, u32 *basic_rates) @@ -2413,6 +2442,72 @@ u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, return pos; } +u8 *ieee80211_ie_build_he_cap(u8 *pos, + const struct ieee80211_sta_he_cap *he_cap, + u8 *end) +{ + u8 n; + u8 ie_len; + u8 *orig_pos = pos; + + /* Make sure we have place for the IE */ + /* + * TODO: the 1 added is because this temporarily is under the EXTENSION + * IE. Get rid of it when it moves. + */ + if (!he_cap) + return orig_pos; + + n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem); + ie_len = 2 + 1 + + sizeof(he_cap->he_cap_elem) + n + + ieee80211_he_ppe_size(he_cap->ppe_thres[0], + he_cap->he_cap_elem.phy_cap_info); + + if ((end - pos) < ie_len) + return orig_pos; + + *pos++ = WLAN_EID_EXTENSION; + pos++; /* We'll set the size later below */ + *pos++ = WLAN_EID_EXT_HE_CAPABILITY; + + /* Fixed data */ + memcpy(pos, &he_cap->he_cap_elem, sizeof(he_cap->he_cap_elem)); + pos += sizeof(he_cap->he_cap_elem); + + memcpy(pos, &he_cap->he_mcs_nss_supp, n); + pos += n; + + /* Check if PPE Threshold should be present */ + if ((he_cap->he_cap_elem.phy_cap_info[6] & + IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0) + goto end; + + /* + * Calculate how many PPET16/PPET8 pairs are to come. Algorithm: + * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK) + */ + n = hweight8(he_cap->ppe_thres[0] & + IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK); + n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >> + IEEE80211_PPE_THRES_NSS_POS)); + + /* + * Each pair is 6 bits, and we need to add the 7 "header" bits to the + * total size. + */ + n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7; + n = DIV_ROUND_UP(n, 8); + + /* Copy PPE Thresholds */ + memcpy(pos, &he_cap->ppe_thres, n); + pos += n; + +end: + orig_pos[1] = (pos - orig_pos) - 2; + return pos; +} + u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, const struct cfg80211_chan_def *chandef, u16 prot_mode, bool rifs_mode) |