00001 /* Packet transmission scheduler. 00002 * 00003 */ 00004 00005 #ifndef _SCHEDULER_H 00006 #define _SCHEDULER_H 00007 00008 #define TCP_MAX_QUEUES (2*TCP_MAX_CONN) 00009 #define TCP_PACKET_TIMEOUT 5000 /* Timeout in miliseconds. */ 00010 #define DRR_QUANTUM 365 /* 1460/4, so high priority queues 00011 can send straight away. */ 00012 00013 /* Queue sizes in packets. */ 00014 enum { 00015 QUEUE_SIZE_HI_PRI = 256, 00016 QUEUE_SIZE_TCP = 50, 00017 QUEUE_SIZE_LOW_PRI = 1024 00018 }; 00019 00020 /* Queue weights for different priorities. */ 00021 enum { 00022 QUEUE_WEIGHT_HIGH = 6, 00023 QUEUE_WEIGHT_NORMAL = 2, 00024 QUEUE_WEIGHT_LOW = 1 00025 }; 00026 00027 void init_sched(); 00028 int alloc_tcp_queue(unsigned weight); 00029 int close_tcp_queue(int queue_num); 00030 int reset_tcp_queue(int queue_num); 00031 void cleanup_sched(); 00032 void mh_ack_rcvd(unsigned ack_seq, int queue_num); 00033 int queue_tcp(Tpacket_data *pd, int queue_num); 00034 int queue_hipri(Tpacket_data *pd); 00035 int queue_lowpri(Tpacket_data *pd); 00036 void scheduler (void *ptr); 00037 00038 #endif /* _SCHEDULER_H */
1.4.2