On 2018/11/9 上午 03:19, Franky Lin wrote: > On Wed, Nov 7, 2018 at 7:48 PM Chi-Hsien Lin <[email protected]> > wrote: >> >> From: Wright Feng <[email protected]> >> >> 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" > > Shouldn't brcmf_inetaddr_changed get called when the interface up again? > > Thanks, > - Franky > The brcmf_inetaddr_changed only be called in inet_del_ifa and inet_insert_ifa. If the IP address is not changed when the interface up again, the brcmf_inetaddr_changed will not be called.
-Wright >> >> Signed-off-by: Wright Feng <[email protected]> >> Signed-off-by: Chi-Hsien Lin <[email protected]> >> --- >> drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c | 2 -- >> 1 file changed, 2 deletions(-) >> >> diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c >> b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c >> index b1f702faff4f..e1666cf3801c 100644 >> --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c >> +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c >> @@ -533,8 +533,6 @@ static int brcmf_netdev_stop(struct net_device *ndev) >> >> brcmf_cfg80211_down(ndev); >> >> - brcmf_fil_iovar_data_set(ifp, "arp_hostip_clear", NULL, 0); >> - >> brcmf_net_setcarrier(ifp, false); >> >> return 0; >> -- >> 2.1.0 >> > > > ---------- > > You're receiving this message because you're a member of the > brcm80211-dev-list group. >
