From: Wright Feng <wright.feng@xxxxxxxxxxx> The firmware does not respond ARP request and causes ping failure with following steps: 1. Bring up interface ifconfig wlan0 up or start wpa_supplicant 2. Set the IP address ifconfig wlan0 192.168.100.10 3. Bring down interface or ifconfig wlan0 down or kill wpa_supplicant 4. Bring up interface again and set the same IP address 5. Connect to AP(192.168.100.1) and ping to AP will be failed. FMAC clears arp_hostip when bringing down the interface, but not set it back if setting the same IP address. We are able to see the IP address in interface info(inconfig wlan0) but the ping still cannot work because the firmware ARP offload does not respond the ARP request. Because of that, we remove "arp_hostip_clear" from function "brcmf_netdev_stop" Signed-off-by: Wright Feng <wright.feng@xxxxxxxxxxx> Signed-off-by: Chi-Hsien Lin <chi-hsien.lin@xxxxxxxxxxx> Reviewed-by: Franky Lin <franky.lin@xxxxxxxxxxxx> --- drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c index 436f501be937..c88655acc78c 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c @@ -579,9 +579,6 @@ static int brcmf_netdev_stop(struct net_device *ndev) brcmf_cfg80211_down(ndev); - if (ifp->drvr->bus_if->state == BRCMF_BUS_UP) - brcmf_fil_iovar_data_set(ifp, "arp_hostip_clear", NULL, 0); - brcmf_net_setcarrier(ifp, false); return 0; -- 2.1.0
