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[lwIP]
- rewrite fix to race condition crash this time in a correct and much more elegant manner svn path=/branches/GSoC_2011/TcpIpDriver/; revision=52730
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@ -587,8 +587,13 @@ void
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LibTCPShutdownCallback(void *arg)
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{
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struct shutdown_callback_msg *msg = arg;
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msg->Error = tcp_shutdown(msg->Pcb, msg->shut_rx, msg->shut_tx);
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if (msg->Pcb->state == ESTABLISHED || msg->Pcb->state == SYN_RCVD)
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{
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msg->Error = tcp_shutdown(msg->Pcb, msg->shut_rx, msg->shut_tx);
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}
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else
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msg->Error = ERR_OK;
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KeSetEvent(&msg->Event, IO_NO_INCREMENT, FALSE);
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}
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@ -599,7 +604,7 @@ LibTCPShutdown(struct tcp_pcb *pcb, const int shut_rx, const int shut_tx)
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struct shutdown_callback_msg *msg;
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err_t ret;
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DbgPrint("[lwIP, LibTCPShutdown] Called on pcb = 0x%x\n", pcb);
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DbgPrint("[lwIP, LibTCPShutdown] Called on pcb = 0x%x with rx = %d, tx = %d\n", pcb, shut_rx, shut_tx);
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if (!pcb)
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{
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@ -607,7 +612,7 @@ LibTCPShutdown(struct tcp_pcb *pcb, const int shut_rx, const int shut_tx)
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return ERR_CLSD;
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}
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DbgPrint("[lwIP, LibTCPClose] pcb->state = %s\n", tcp_state_str[pcb->state]);
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DbgPrint("[lwIP, LibTCPShutdown] pcb->state = %s\n", tcp_state_str[pcb->state]);
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msg = ExAllocatePool(NonPagedPool, sizeof(struct shutdown_callback_msg));
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if (msg)
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@ -658,19 +663,18 @@ LibTCPCloseCallback(void *arg)
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DbgPrint("[lwIP, LibTCPCloseCallback] Closing a listener\n");
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msg->Error = tcp_close(msg->Pcb);
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}
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else if (msg->Pcb->state != LAST_ACK && msg->Pcb->state != CLOSED)
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else
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{
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DbgPrint("[lwIP, LibTCPCloseCallback] Aborting a connection\n");
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tcp_abort(msg->Pcb);
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msg->Error = ERR_OK;
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}
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else
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msg->Error = ERR_OK;
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KeSetEvent(&msg->Event, IO_NO_INCREMENT, FALSE);
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}
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err_t
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//LibTCPClose(struct tcp_pcb *pcb, const int safe)
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LibTCPClose(struct tcp_pcb *pcb, const int safe)
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{
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err_t ret;
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@ -712,14 +716,12 @@ LibTCPClose(struct tcp_pcb *pcb, const int safe)
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DbgPrint("[lwIP, LibTCPClose] Closing a listener\n");
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ret = tcp_close(pcb);
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}
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else if (pcb->state != LAST_ACK && pcb->state != CLOSED)
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else
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{
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DbgPrint("[lwIP, LibTCPClose] Aborting a connection\n");
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tcp_abort(pcb);
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ret = ERR_OK;
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}
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else
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ret = ERR_OK;
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return ret;
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}
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