Only invoke cfg80211_bss_expire on the first nl80211_dump_scan invocation to avoid (likely) redundant processing.
Signed-off-by: Denis Kenzior <[email protected]> --- net/wireless/nl80211.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index ff28f8feeb09..7458cbcf00b2 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -7930,7 +7930,15 @@ static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb) wdev_lock(wdev); spin_lock_bh(&rdev->bss_lock); - cfg80211_bss_expire(rdev); + + /* + * dump_scan will be called multiple times to break up the scan results + * into multiple messages. It is unlikely that any more bss-es will be + * expired after the first call, so only call only call this on the + * first dump_scan invocation. + */ + if (start == 0) + cfg80211_bss_expire(rdev); cb->seq = rdev->bss_generation; -- 2.13.5
