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wifi: ieee80211: add definitions for multi-link element

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Add the definitions necessary to build and parse some of the
multi-link element, the per-STA profile isn't fully included.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2022-05-31 14:03:38 +02:00
parent 9ecff10e82
commit 0f48b8b88a
1 changed files with 222 additions and 0 deletions
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222
include/linux/ieee80211.h
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@ -4379,4 +4379,226 @@ enum ieee80211_range_params_max_total_ltf {
/* multi-link device */
#define IEEE80211_MLD_MAX_NUM_LINKS 15
#define IEEE80211_ML_CONTROL_TYPE 0x0007
#define IEEE80211_ML_CONTROL_TYPE_BASIC 0
#define IEEE80211_ML_CONTROL_TYPE_PREQ 1
#define IEEE80211_ML_CONTROL_TYPE_RECONF 2
#define IEEE80211_ML_CONTROL_TYPE_TDLS 3
#define IEEE80211_ML_CONTROL_TYPE_PRIO_ACCESS 4
#define IEEE80211_ML_CONTROL_PRESENCE_MASK 0xfff0
struct ieee80211_multi_link_elem {
__le16 control;
u8 variable[];
} __packed;
#define IEEE80211_MLC_BASIC_PRES_LINK_ID 0x0010
#define IEEE80211_MLC_BASIC_PRES_BSS_PARAM_CH_CNT 0x0020
#define IEEE80211_MLC_BASIC_PRES_MED_SYNC_DELAY 0x0040
#define IEEE80211_MLC_BASIC_PRES_EML_CAPA 0x0080
#define IEEE80211_MLC_BASIC_PRES_MLD_CAPA_OP 0x0100
#define IEEE80211_MLC_BASIC_PRES_MLD_ID 0x0200
#define IEEE80211_MED_SYNC_DELAY_DURATION 0x00ff
#define IEEE80211_MED_SYNC_DELAY_SYNC_OFDM_ED_THRESH 0x0f00
#define IEEE80211_MED_SYNC_DELAY_SYNC_MAX_NUM_TXOPS 0xf000
#define IEEE80211_EML_CAP_EMLSR_SUPP 0x0001
#define IEEE80211_EML_CAP_EMLSR_PADDING_DELAY 0x000e
#define IEEE80211_EML_CAP_EMLSR_PADDING_DELAY_0US 0
#define IEEE80211_EML_CAP_EMLSR_PADDING_DELAY_32US 1
#define IEEE80211_EML_CAP_EMLSR_PADDING_DELAY_64US 2
#define IEEE80211_EML_CAP_EMLSR_PADDING_DELAY_128US 3
#define IEEE80211_EML_CAP_EMLSR_PADDING_DELAY_256US 4
#define IEEE80211_EML_CAP_EMLSR_TRANSITION_DELAY 0x0070
#define IEEE80211_EML_CAP_EMLSR_TRANSITION_DELAY_0US 0
#define IEEE80211_EML_CAP_EMLSR_TRANSITION_DELAY_16US 1
#define IEEE80211_EML_CAP_EMLSR_TRANSITION_DELAY_32US 2
#define IEEE80211_EML_CAP_EMLSR_TRANSITION_DELAY_64US 3
#define IEEE80211_EML_CAP_EMLSR_TRANSITION_DELAY_128US 4
#define IEEE80211_EML_CAP_EMLSR_TRANSITION_DELAY_256US 5
#define IEEE80211_EML_CAP_EMLMR_SUPPORT 0x0080
#define IEEE80211_EML_CAP_EMLMR_DELAY 0x0700
#define IEEE80211_EML_CAP_EMLMR_DELAY_0US 0
#define IEEE80211_EML_CAP_EMLMR_DELAY_32US 1
#define IEEE80211_EML_CAP_EMLMR_DELAY_64US 2
#define IEEE80211_EML_CAP_EMLMR_DELAY_128US 3
#define IEEE80211_EML_CAP_EMLMR_DELAY_256US 4
#define IEEE80211_EML_CAP_TRANSITION_TIMEOUT 0x7800
#define IEEE80211_EML_CAP_TRANSITION_TIMEOUT_0 0
#define IEEE80211_EML_CAP_TRANSITION_TIMEOUT_128US 1
#define IEEE80211_EML_CAP_TRANSITION_TIMEOUT_256US 2
#define IEEE80211_EML_CAP_TRANSITION_TIMEOUT_512US 3
#define IEEE80211_EML_CAP_TRANSITION_TIMEOUT_1TU 4
#define IEEE80211_EML_CAP_TRANSITION_TIMEOUT_2TU 5
#define IEEE80211_EML_CAP_TRANSITION_TIMEOUT_4TU 6
#define IEEE80211_EML_CAP_TRANSITION_TIMEOUT_8TU 7
#define IEEE80211_EML_CAP_TRANSITION_TIMEOUT_16TU 8
#define IEEE80211_EML_CAP_TRANSITION_TIMEOUT_32TU 9
#define IEEE80211_EML_CAP_TRANSITION_TIMEOUT_64TU 10
#define IEEE80211_EML_CAP_TRANSITION_TIMEOUT_128TU 11
#define IEEE80211_MLD_CAP_OP_MAX_SIMUL_LINKS 0x000f
#define IEEE80211_MLD_CAP_OP_SRS_SUPPORT 0x0010
#define IEEE80211_MLD_CAP_OP_TID_TO_LINK_MAP_NEG_SUPP 0x0060
#define IEEE80211_MLD_CAP_OP_FREQ_SEP_TYPE_IND 0x0f80
#define IEEE80211_MLD_CAP_OP_AAR_SUPPORT 0x1000
struct ieee80211_mle_basic_common_info {
u8 len;
u8 mld_mac_addr[ETH_ALEN];
u8 variable[];
} __packed;
#define IEEE80211_MLC_PREQ_PRES_MLD_ID 0x0010
struct ieee80211_mle_preq_common_info {
u8 len;
u8 variable[];
} __packed;
#define IEEE80211_MLC_RECONF_PRES_MLD_MAC_ADDR 0x0010
/* no fixed fields in RECONF */
struct ieee80211_mle_tdls_common_info {
u8 len;
u8 ap_mld_mac_addr[ETH_ALEN];
} __packed;
#define IEEE80211_MLC_PRIO_ACCESS_PRES_AP_MLD_MAC_ADDR 0x0010
/* no fixed fields in PRIO_ACCESS */
/**
* ieee80211_mle_common_size - check multi-link element common size
* @data: multi-link element, must already be checked for size using
* ieee80211_mle_size_ok()
*/
static inline u8 ieee80211_mle_common_size(const u8 *data)
{
const struct ieee80211_multi_link_elem *mle = (const void *)data;
u16 control = le16_to_cpu(mle->control);
u8 common = 0;
switch (u16_get_bits(control, IEEE80211_ML_CONTROL_TYPE)) {
case IEEE80211_ML_CONTROL_TYPE_BASIC:
common += sizeof(struct ieee80211_mle_basic_common_info);
break;
case IEEE80211_ML_CONTROL_TYPE_PREQ:
common += sizeof(struct ieee80211_mle_preq_common_info);
break;
case IEEE80211_ML_CONTROL_TYPE_RECONF:
if (control & IEEE80211_MLC_RECONF_PRES_MLD_MAC_ADDR)
common += ETH_ALEN;
return common;
case IEEE80211_ML_CONTROL_TYPE_TDLS:
common += sizeof(struct ieee80211_mle_tdls_common_info);
break;
case IEEE80211_ML_CONTROL_TYPE_PRIO_ACCESS:
if (control & IEEE80211_MLC_PRIO_ACCESS_PRES_AP_MLD_MAC_ADDR)
common += ETH_ALEN;
return common;
default:
WARN_ON(1);
return 0;
}
return common + mle->variable[0];
}
/**
* ieee80211_mle_size_ok - validate multi-link element size
* @data: pointer to the element data
* @len: length of the containing element
*/
static inline bool ieee80211_mle_size_ok(const u8 *data, u8 len)
{
const struct ieee80211_multi_link_elem *mle = (const void *)data;
u8 fixed = sizeof(*mle);
u8 common = 0;
bool check_common_len = false;
u16 control;
if (len < fixed)
return false;
control = le16_to_cpu(mle->control);
switch (u16_get_bits(control, IEEE80211_ML_CONTROL_TYPE)) {
case IEEE80211_ML_CONTROL_TYPE_BASIC:
common += sizeof(struct ieee80211_mle_basic_common_info);
check_common_len = true;
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;
if (control & IEEE80211_MLC_BASIC_PRES_MLD_CAPA_OP)
common += 2;
if (control & IEEE80211_MLC_BASIC_PRES_MLD_ID)
common += 1;
break;
case IEEE80211_ML_CONTROL_TYPE_PREQ:
common += sizeof(struct ieee80211_mle_preq_common_info);
if (control & IEEE80211_MLC_PREQ_PRES_MLD_ID)
common += 1;
check_common_len = true;
break;
case IEEE80211_ML_CONTROL_TYPE_RECONF:
if (control & IEEE80211_MLC_RECONF_PRES_MLD_MAC_ADDR)
common += ETH_ALEN;
break;
case IEEE80211_ML_CONTROL_TYPE_TDLS:
common += sizeof(struct ieee80211_mle_tdls_common_info);
check_common_len = true;
break;
case IEEE80211_ML_CONTROL_TYPE_PRIO_ACCESS:
if (control & IEEE80211_MLC_PRIO_ACCESS_PRES_AP_MLD_MAC_ADDR)
common += ETH_ALEN;
break;
default:
/* we don't know this type */
return true;
}
if (len < fixed + common)
return false;
if (!check_common_len)
return true;
/* if present, common length is the first octet there */
return mle->variable[0] >= common;
}
enum ieee80211_mle_subelems {
IEEE80211_MLE_SUBELEM_PER_STA_PROFILE = 0,
};
#define IEEE80211_MLE_STA_CONTROL_LINK_ID 0x000f
#define IEEE80211_MLE_STA_CONTROL_COMPLETE_PROFILE 0x0010
#define IEEE80211_MLE_STA_CONTROL_STA_MAC_ADDR_PRESENT 0x0020
#define IEEE80211_MLE_STA_CONTROL_BEACON_INT_PRESENT 0x0040
#define IEEE80211_MLE_STA_CONTROL_TSF_OFFS_PRESENT 0x0080
#define IEEE80211_MLE_STA_CONTROL_DTIM_INFO_PRESENT 0x0100
#define IEEE80211_MLE_STA_CONTROL_NSTR_LINK_PAIR_PRESENT 0x0200
#define IEEE80211_MLE_STA_CONTROL_NSTR_BITMAP_SIZE 0x0400
#define IEEE80211_MLE_STA_CONTROL_BSS_PARAM_CHANGE_CNT_PRESENT 0x0800
struct ieee80211_mle_per_sta_profile {
__le16 control;
u8 sta_info_len;
u8 variable[];
} __packed;
#define for_each_mle_subelement(_elem, _data, _len) \
if (ieee80211_mle_size_ok(_data, _len)) \
for_each_element(_elem, \
_data + ieee80211_mle_common_size(_data),\
_len - ieee80211_mle_common_size(_data))
#endif /* LINUX_IEEE80211_H */