diff options
author | Arend van Spriel <arend@broadcom.com> | 2016-03-02 19:37:18 (GMT) |
---|---|---|
committer | Johannes Berg <johannes.berg@intel.com> | 2016-04-05 08:56:34 (GMT) |
commit | 38de03d2a28925b489c11546804e2f5418cc17a4 (patch) | |
tree | dd54c49467ce3993f5e916862de528df873e984b /include/uapi | |
parent | f59374eb427fb1377fdb7b8b3691c48e0c77a3c4 (diff) | |
download | linux-38de03d2a28925b489c11546804e2f5418cc17a4.tar.xz |
nl80211: add feature for BSS selection support
Introducing a new feature that the driver can use to
indicate the driver/firmware supports configuration of BSS
selection criteria upon CONNECT command. This can be useful
when multiple BSS-es are found belonging to the same ESS,
ie. Infra-BSS with same SSID. The criteria can then be used to
offload selection of a preferred BSS.
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Lei Zhang <leizh@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
[move wiphy support check into parse_bss_select()]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'include/uapi')
-rw-r--r-- | include/uapi/linux/nl80211.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h index 23bf066..b2a8d8c 100644 --- a/include/uapi/linux/nl80211.h +++ b/include/uapi/linux/nl80211.h @@ -1797,6 +1797,12 @@ enum nl80211_commands { * in a PBSS. Specified in %NL80211_CMD_CONNECT to request * connecting to a PCP, and in %NL80211_CMD_START_AP to start * a PCP instead of AP. Relevant for DMG networks only. + * @NL80211_ATTR_BSS_SELECT: nested attribute for driver supporting the + * BSS selection feature. When used with %NL80211_CMD_GET_WIPHY it contains + * attributes according &enum nl80211_bss_select_attr to indicate what + * BSS selection behaviours are supported. When used with %NL80211_CMD_CONNECT + * it contains the behaviour-specific attribute containing the parameters for + * BSS selection to be done by driver and/or firmware. * * @NUM_NL80211_ATTR: total number of nl80211_attrs available * @NL80211_ATTR_MAX: highest attribute number currently defined @@ -2174,6 +2180,8 @@ enum nl80211_attrs { NL80211_ATTR_PBSS, + NL80211_ATTR_BSS_SELECT, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, @@ -4667,4 +4675,48 @@ enum nl80211_sched_scan_plan { __NL80211_SCHED_SCAN_PLAN_AFTER_LAST - 1 }; +/** + * struct nl80211_bss_select_rssi_adjust - RSSI adjustment parameters. + * + * @band: band of BSS that must match for RSSI value adjustment. + * @delta: value used to adjust the RSSI value of matching BSS. + */ +struct nl80211_bss_select_rssi_adjust { + __u8 band; + __s8 delta; +} __attribute__((packed)); + +/** + * enum nl80211_bss_select_attr - attributes for bss selection. + * + * @__NL80211_BSS_SELECT_ATTR_INVALID: reserved. + * @NL80211_BSS_SELECT_ATTR_RSSI: Flag indicating only RSSI-based BSS selection + * is requested. + * @NL80211_BSS_SELECT_ATTR_BAND_PREF: attribute indicating BSS + * selection should be done such that the specified band is preferred. + * When there are multiple BSS-es in the preferred band, the driver + * shall use RSSI-based BSS selection as a second step. The value of + * this attribute is according to &enum nl80211_band (u32). + * @NL80211_BSS_SELECT_ATTR_RSSI_ADJUST: When present the RSSI level for + * BSS-es in the specified band is to be adjusted before doing + * RSSI-based BSS selection. The attribute value is a packed structure + * value as specified by &struct nl80211_bss_select_rssi_adjust. + * @NL80211_BSS_SELECT_ATTR_MAX: highest bss select attribute number. + * @__NL80211_BSS_SELECT_ATTR_AFTER_LAST: internal use. + * + * One and only one of these attributes are found within %NL80211_ATTR_BSS_SELECT + * for %NL80211_CMD_CONNECT. It specifies the required BSS selection behaviour + * which the driver shall use. + */ +enum nl80211_bss_select_attr { + __NL80211_BSS_SELECT_ATTR_INVALID, + NL80211_BSS_SELECT_ATTR_RSSI, + NL80211_BSS_SELECT_ATTR_BAND_PREF, + NL80211_BSS_SELECT_ATTR_RSSI_ADJUST, + + /* keep last */ + __NL80211_BSS_SELECT_ATTR_AFTER_LAST, + NL80211_BSS_SELECT_ATTR_MAX = __NL80211_BSS_SELECT_ATTR_AFTER_LAST - 1 +}; + #endif /* __LINUX_NL80211_H */ |