don't prebuffer all data when uploading

Signed-off-by: Petar Koretic <petar.koretic@sartura.hr>
pcap: lower limit to 1024K free space

Signed-off-by: Petar Koretic <petar.koretic@sartura.hr>
openwrt: add luci package

Signed-off-by: Petar Koretic <petar.koretic@sartura.hr>