Symbol: __packet_rcv_has_room
net/packet/af_packet.c
1308
ret = __packet_rcv_has_room(po, skb);
net/packet/af_packet.c
1320
__packet_rcv_has_room(po, NULL) == ROOM_NORMAL)
net/packet/af_packet.c
2279
if (__packet_rcv_has_room(po, skb) == ROOM_NONE) {