For broadcast frames, every interface might have to process it and
therefore the link_id cannot be determined in the driver.
In mac80211, when the frame is about to be forwarded to each interface,
we can use the member "freq" in struct ieee80211_rx_status to determine
the "link_id" for each interface.
Signed-off-by: Michael-CY Lee <michael-cy.lee@xxxxxxxxxxxx>
Reviewed-by: Money Wang <money.wang@xxxxxxxxxxxx>
---
v2:
- use frequency instead of band
---
net/mac80211/rx.c | 23 ++++++++++++++++++++++-
1 file changed, 22 insertions(+), 1 deletion(-)
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index b414c9e6e61b..2ac8ccb838ff 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -5106,8 +5106,29 @@ static bool ieee80211_rx_for_interface(struct ieee80211_rx_data *rx,
struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
sta = sta_info_get_bss(rx->sdata, hdr->addr2);
- if (status->link_valid)
+ if (status->link_valid) {
link_id = status->link_id;
+ } else if (ieee80211_vif_is_mld(&rx->sdata->vif) &&
+ status->freq) {
+ struct ieee80211_link_data *link;
+ struct ieee80211_chanctx_conf *conf;
+ int i;
+
+ for_each_valid_link(&rx->sdata->wdev, i) {
+ link = rcu_dereference(rx->sdata->link[i]);
+ if (!link || !link->conf)
+ continue;
+
+ conf = rcu_dereference(link->conf->chanctx_conf);
+ if (!conf || !conf->def.chan)
+ continue;
+
+ if (status->freq == conf->def.chan->center_freq) {
+ link_id = i;
+ break;
+ }
+ }
+ }
}
if (!ieee80211_rx_data_set_sta(rx, sta, link_id))
--
2.25.1
