6e5d01124f
hostapd calls pcap_next(3) to read the next packet off the wlan interface. pcap_next() returns a pointer to the packet header but does not indicate success or failure. Unfortunately this results in an infinite loop (100% CPU) when the wlan device disappears, i.e. when a USB wlan device is manually removed or a USB error results in the device removal. However pcap_next_ex(3) does return success or failure. To resolve this we use pcap_next_ex(), forcing hostapd to exit when the error is encountered. An error message is printed to syslog or stderr when debugging (-d flag) is enabled. Unfortunately wpa_printf() only works when debugging is enabled. PR: 253608 Reported by: Damjan Jovanovic <damjan.jov@gmail.com>, bz (privately) MFC after: 3 days |
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