diff options
| -rw-r--r-- | include/linux/ieee80211.h | 64 | ||||
| -rw-r--r-- | net/mac80211/ieee80211_i.h | 2 | ||||
| -rw-r--r-- | net/mac80211/mlme.c | 16 |
3 files changed, 81 insertions, 1 deletions
diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index fa679613c562..15c4e12b6fc7 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -4690,6 +4690,34 @@ static inline u8 ieee80211_mle_common_size(const u8 *data) } /** + * ieee80211_mle_get_bss_param_ch_cnt - returns the BSS parameter change count + * @mle: the basic multi link element + * + * The element is assumed to be of the correct type (BASIC) and big enough, + * this must be checked using ieee80211_mle_type_ok(). + * + * If the BSS parameter change count value can't be found (the presence bit + * for it is clear), 0 will be returned. + */ +static inline u8 +ieee80211_mle_get_bss_param_ch_cnt(const struct ieee80211_multi_link_elem *mle) +{ + u16 control = le16_to_cpu(mle->control); + const u8 *common = mle->variable; + + /* common points now at the beginning of ieee80211_mle_basic_common_info */ + common += sizeof(struct ieee80211_mle_basic_common_info); + + if (!(control & IEEE80211_MLC_BASIC_PRES_BSS_PARAM_CH_CNT)) + return 0; + + if (control & IEEE80211_MLC_BASIC_PRES_LINK_ID) + common += 1; + + return *common; +} + +/** * ieee80211_mle_get_eml_sync_delay - returns the medium sync delay * @data: pointer to the multi link EHT IE * @@ -4902,6 +4930,42 @@ static inline bool ieee80211_mle_basic_sta_prof_size_ok(const u8 *data, fixed + prof->sta_info_len <= len; } +/** + * ieee80211_mle_basic_sta_prof_bss_param_ch_cnt - get per-STA profile BSS + * parameter change count + * @prof: the per-STA profile, having been checked with + * ieee80211_mle_basic_sta_prof_size_ok() for the correct length + * + * Return: The BSS parameter change count value if present, 0 otherwise. + */ +static inline u8 +ieee80211_mle_basic_sta_prof_bss_param_ch_cnt(const struct ieee80211_mle_per_sta_profile *prof) +{ + u16 control = le16_to_cpu(prof->control); + const u8 *pos = prof->variable; + + if (!(control & IEEE80211_MLE_STA_CONTROL_BSS_PARAM_CHANGE_CNT_PRESENT)) + return 0; + + if (control & IEEE80211_MLE_STA_CONTROL_STA_MAC_ADDR_PRESENT) + pos += 6; + if (control & IEEE80211_MLE_STA_CONTROL_BEACON_INT_PRESENT) + pos += 2; + if (control & IEEE80211_MLE_STA_CONTROL_TSF_OFFS_PRESENT) + pos += 8; + if (control & IEEE80211_MLE_STA_CONTROL_DTIM_INFO_PRESENT) + pos += 2; + if (control & IEEE80211_MLE_STA_CONTROL_COMPLETE_PROFILE && + control & IEEE80211_MLE_STA_CONTROL_NSTR_BITMAP_SIZE) { + if (control & IEEE80211_MLE_STA_CONTROL_NSTR_BITMAP_SIZE) + pos += 2; + else + pos += 1; + } + + return *pos; +} + #define IEEE80211_MLE_STA_RECONF_CONTROL_LINK_ID 0x000f #define IEEE80211_MLE_STA_RECONF_CONTROL_COMPLETE_PROFILE 0x0010 #define IEEE80211_MLE_STA_RECONF_CONTROL_STA_MAC_ADDR_PRESENT 0x0020 diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 2f7665998da0..91633a0b723e 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -951,6 +951,8 @@ struct ieee80211_link_data_managed { int wmm_last_param_set; int mu_edca_last_param_set; + u8 bss_param_ch_cnt; + struct cfg80211_bss *bss; }; diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index cf15089e95f1..f93eb38ae0b8 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -4018,6 +4018,8 @@ static bool ieee80211_assoc_config_link(struct ieee80211_link_data *link, const struct cfg80211_bss_ies *bss_ies = NULL; struct ieee80211_supported_band *sband; struct ieee802_11_elems *elems; + const __le16 prof_bss_param_ch_present = + cpu_to_le16(IEEE80211_MLE_STA_CONTROL_BSS_PARAM_CHANGE_CNT_PRESENT); u16 capab_info; bool ret; @@ -4033,7 +4035,17 @@ static bool ieee80211_assoc_config_link(struct ieee80211_link_data *link, * successful, so set the status directly to success */ assoc_data->link[link_id].status = WLAN_STATUS_SUCCESS; - } else if (!elems->prof) { + if (elems->ml_basic) { + if (!(elems->ml_basic->control & + cpu_to_le16(IEEE80211_MLC_BASIC_PRES_BSS_PARAM_CH_CNT))) { + ret = false; + goto out; + } + link->u.mgd.bss_param_ch_cnt = + ieee80211_mle_get_bss_param_ch_cnt(elems->ml_basic); + } + } else if (!elems->prof || + !(elems->prof->control & prof_bss_param_ch_present)) { ret = false; goto out; } else { @@ -4046,6 +4058,8 @@ static bool ieee80211_assoc_config_link(struct ieee80211_link_data *link, */ capab_info = get_unaligned_le16(ptr); assoc_data->link[link_id].status = get_unaligned_le16(ptr + 2); + link->u.mgd.bss_param_ch_cnt = + ieee80211_mle_basic_sta_prof_bss_param_ch_cnt(elems->prof); if (assoc_data->link[link_id].status != WLAN_STATUS_SUCCESS) { link_info(link, "association response status code=%u\n", |