rsi: optimize virtual interfaces

Due to multiple calls of add interface routine, vif is getting duplicated
and at certain instance, we are out of vifs, causing the driver to behave
abnormal.

Fix: Every vif has a unique mac-id, when we got a vif with same mac-id as
the previous id's, we will override the respective vif.

Signed-off-by: Siva Rebbagondla <siva.rebbagondla@redpinesignals.com>
Signed-off-by: Sushant Kumar Mishra <sushant.mishra@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

diff --git a/drivers/net/wireless/rsi/rsi_91x_mac80211.c b/drivers/net/wireless/rsi/rsi_91x_mac80211.c
index 2ca7464b7fa370687d5917578312774ebf0dfebb..4e510cbe0a89f011d6f5af6db22846146702c1e8 100644 (file)
--- a/drivers/net/wireless/rsi/rsi_91x_mac80211.c
+++ b/drivers/net/wireless/rsi/rsi_91x_mac80211.c
@@ -416,7 +416,8 @@ static int rsi_mac80211_add_interface(struct ieee80211_hw *hw,
 
        /* Get free vap index */
        for (i = 0; i < RSI_MAX_VIFS; i++) {
-               if (!adapter->vifs[i]) {
+               if (!adapter->vifs[i] ||
+                   !memcmp(vif->addr, adapter->vifs[i]->addr, ETH_ALEN)) {
                        vap_idx = i;
                        break;
                }