[PATCH] hostapd: Fix rnr ie length when no need to report bss

[Allen Ye]

From: "Allen.Ye" <allen.ye at mediatek.com>

Fix rnr ie length when no need to report bss. If we don't have content in
TBTT then don't need to change the length of the ie (*size_offset).

Signed-off-by: Allen.Ye <allen.ye at mediatek.com>
Signed-off-by: Michael Lee <michael-cy.lee at mediatek.com>
Signed-off-by: Money Wang <Money.Wang at mediatek.com>
---
 src/ap/ieee802_11.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/ap/ieee802_11.c b/src/ap/ieee802_11.c
index aa02fc624..5de63c279 100644
--- a/src/ap/ieee802_11.c
+++ b/src/ap/ieee802_11.c
@@ -7484,8 +7484,10 @@ static u8 * hostapd_eid_rnr_iface(struct hostapd_data *hapd,
 		}
 
 		start = i;
-		*tbtt_count_pos = RNR_TBTT_INFO_COUNT(tbtt_count - 1);
-		*size_offset = (eid - size_offset) - 1;
+		if (tbtt_count != 0) {
+			*tbtt_count_pos = RNR_TBTT_INFO_COUNT(tbtt_count - 1);
+			*size_offset = (eid - size_offset) - 1;
+		}
 	}
 
 	if (tbtt_count == 0)
-- 
2.18.0