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Check whether to skip a BSS in RNR with a shared helper

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The functions that determine the length of the RNR information and that
build the actual RNR need to use the same conditions for skipping BSSs.
Use a shared helper function for this to avoid having to maintain two
copies of the same implementation and the risking those getting out of
sync.

Signed-off-by: Jouni Malinen <quic_jouni@quicinc.com>
This commit is contained in:
Jouni Malinen 2024-04-20 18:11:55 +03:00 committed by Jouni Malinen
parent de1bfda64e
commit b3ad54e460
1 changed files with 41 additions and 55 deletions
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94
src/ap/ieee802_11.c
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@ -7255,6 +7255,41 @@ struct mbssid_ie_profiles {
u8 end;
};
static bool hostapd_skip_rnr(size_t i, struct mbssid_ie_profiles *skip_profiles,
bool ap_mld, u8 tbtt_info_len, bool mld_update,
struct hostapd_data *reporting_hapd,
struct hostapd_data *bss)
{
if (skip_profiles &&
i >= skip_profiles->start && i < skip_profiles->end)
return true;
/* No need to report if length is for normal TBTT and the BSS is
* affiliated with an AP MLD. MLD TBTT will include this. */
if (tbtt_info_len == RNR_TBTT_INFO_LEN && ap_mld)
return true;
/* No need to report if length is for MLD TBTT and the BSS is not
* affiliated with an aP MLD. Normal TBTT will include this. */
if (tbtt_info_len == RNR_TBTT_INFO_MLD_LEN && !ap_mld)
return true;
#ifdef CONFIG_IEEE80211BE
/* If building for co-location and they are ML partners, no need to
* include since the ML RNR will carry this. */
if (!mld_update && hostapd_is_ml_partner(reporting_hapd, bss))
return true;
/* If building for ML RNR and they are not ML partners, don't include.
*/
if (mld_update && !hostapd_is_ml_partner(reporting_hapd, bss))
return true;
#endif /* CONFIG_IEEE80211BE */
return false;
}
static size_t
hostapd_eid_rnr_iface_len(struct hostapd_data *hapd,
struct hostapd_data *reporting_hapd,
@ -7299,37 +7334,11 @@ repeat_rnr_len:
bss->conf->ignore_broadcast_ssid)
continue;
if (skip_profiles &&
i >= skip_profiles->start && i < skip_profiles->end)
if (hostapd_skip_rnr(i, skip_profiles, ap_mld,
tbtt_info_len, mld_update,
reporting_hapd, bss))
continue;
/* No need to report if length is for normal TBTT and
* the BSS is affiliated with an AP MLD. MLD TBTT will
* include this. */
if (tbtt_info_len == RNR_TBTT_INFO_LEN && ap_mld)
continue;
/* No need to report if length is for MLD TBTT and the
* BSS is not affiliated with an aP MLD. Normal TBTT
* will include this. */
if (tbtt_info_len == RNR_TBTT_INFO_MLD_LEN && !ap_mld)
continue;
#ifdef CONFIG_IEEE80211BE
/* If building for co-location and they are ML partners,
* no need to include since the ML RNR will carry this.
*/
if (!mld_update &&
hostapd_is_ml_partner(reporting_hapd, bss))
continue;
/* If building for ML RNR and they are not ML partners,
* don't include. */
if (mld_update &&
!hostapd_is_ml_partner(reporting_hapd, bss))
continue;
#endif /* CONFIG_IEEE80211BE */
if (len + tbtt_info_len > 255 ||
tbtt_count >= RNR_TBTT_INFO_COUNT_MAX)
break;
@ -7590,33 +7599,10 @@ static bool hostapd_eid_rnr_bss(struct hostapd_data *hapd,
bss == reporting_hapd || bss->conf->ignore_broadcast_ssid)
return false;
if (skip_profiles
&& i >= skip_profiles->start && i < skip_profiles->end)
if (hostapd_skip_rnr(i, skip_profiles, ap_mld, tbtt_info_len,
mld_update, reporting_hapd, bss))
return false;
/* No need to report if length is for normal TBTT and the BSS is
* affiliated with an AP MLD. MLD TBTT will include this. */
if (tbtt_info_len == RNR_TBTT_INFO_LEN && ap_mld)
return false;
/* No need to report if length is for MLD TBTT and the BSS is not
* affiliated with an AP MLD. Normal TBTT will include this. */
if (tbtt_info_len == RNR_TBTT_INFO_MLD_LEN && !ap_mld)
return false;
#ifdef CONFIG_IEEE80211BE
/* If building for co-location and they are ML partners, no need to
* include since the ML RNR will carry this. */
if (!mld_update && hostapd_is_ml_partner(reporting_hapd, bss))
return false;
/* If building for ML RNR and they are not ML partners,
* don't include.
*/
if (mld_update && !hostapd_is_ml_partner(reporting_hapd, bss))
return false;
#endif /* CONFIG_IEEE80211BE */
if (*len + RNR_TBTT_INFO_LEN > 255 ||
*tbtt_count >= RNR_TBTT_INFO_COUNT_MAX)
return true;