我也犯了同样的错误。这为我修复了它：
write_lock_bh(&packet_sklist_lock); sk_del_node_init(sk); write_unlock_bh(&packet_sklist_lock); // Unhook packet receive handler. if (po->running) { dev_remove_pack(&po->prot_hook);//就是这句!!把packet_type从链表中删除 po->running = 0; po->num = 0; __sock_put(sk); }...
ring = mmap(NULL, total_size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); mmap申请total_size大小的内存,返回指向缓冲区的指针。 第一个参数:指定共享缓冲区的起始地址,如果是NULL,内核将选择创建映射的地址。 第二个参数:指定共享缓冲区的总大小。 第三个参数:PROT_READ|PROT_WRITE第三个参数表示映射空...
retval = poll(&pfd, 1, timeout); 先检查状态值,然后再对frame进行轮循,这样就可以避免竞争条件了(如果status已经是TP_STATUS_USER了,也就是说在调用poll前已经有了一个报文到达。这个时候再调用poll,并且之后不再有新报文到达的话,那么之前的那个报文就无法读取了,这就是所谓的竞争条件)。 在libpcap-1.0.0...
}/* parent - read from child, multiplex and send out to fd#1 */packet_write(1,"ACK\n"); packet_flush(1);while(1) {structpollfdpfd[2];intstatus; pfd[0].fd = cld.out; pfd[0].events = POLLIN; pfd[1].fd = cld.err;
[capture] poll() ---> to wait for incoming packets [shutdown] close() ---> destruction...
void packet_write_poll(void); void packet_write_wait(void); int packet_have_data_to_write(void); int packet_not_very_much_data_to_write(void); int packet_connection_is_on_socket(void); int packet_connection_is_ipv4(void); int packet_remaining(void); void packet_send_ignore(int); voi...
[264]. In the implementation of Fast Messages over Myrinet, this presented the choice between copying messages to kernel memory to use the DMA mechanism versus memory-mapped writes across the I/O bus to the interface. Pakin, Lauria, and Chien [264] argue that asymmetry in the manner in ...
NdisDprAcquireReadWriteLock 함수 NdisDprAcquireSpinLock 매크로 NdisDprReleaseReadWriteLock 함수 NdisDprReleaseSpinLock 매크로 NdisEnumerateFilterModules 함수 NdisEqualMemory 매크로 NdisEqualString 매크로 NdisEqualUnicodeString 매크로 NdisFCancelDirectOidRequest 함수 ...
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