diff options
Diffstat (limited to 'include/linux/ieee80211.h')
| -rw-r--r-- | include/linux/ieee80211.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index eafa70e5ba94..f0c068446c79 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -5025,6 +5025,43 @@ static inline u16 ieee80211_mle_get_eml_cap(const u8 *data) } /** + * ieee80211_mle_get_mld_capa_op - returns the MLD capabilities and operations. + * @data: pointer to the multi link EHT IE + * + * 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 MLD capabilities and operations field is not present, 0 will be + * returned. + */ +static inline u16 ieee80211_mle_get_mld_capa_op(const u8 *data) +{ + const struct ieee80211_multi_link_elem *mle = (const void *)data; + 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_MLD_CAPA_OP)) + return 0; + + if (control & IEEE80211_MLC_BASIC_PRES_LINK_ID) + common += 1; + if (control & IEEE80211_MLC_BASIC_PRES_BSS_PARAM_CH_CNT) + common += 1; + if (control & IEEE80211_MLC_BASIC_PRES_MED_SYNC_DELAY) + common += 2; + if (control & IEEE80211_MLC_BASIC_PRES_EML_CAPA) + common += 2; + + return get_unaligned_le16(common); +} + +/** * ieee80211_mle_size_ok - validate multi-link element size * @data: pointer to the element data * @len: length of the containing element |