309         TxPacket *packet = &sTxPacketPool[index];  in InitPacketQueue()  local
311         packet->mNext     = sFreeTxPacketHead;  in InitPacketQueue()
312         sFreeTxPacketHead = packet;  in InitPacketQueue()
320         TxPacket *packet = sTxPacketQueueTail->mNext; // tail->mNext is the head of the list.  in SendQueuedPackets()  local
322 …if (SendPacket(packet->mBuffer, packet->mLength, &packet->mDestSockAddr) == OT_ERROR_INVALID_STATE)  in SendQueuedPackets()
331         if (packet == sTxPacketQueueTail)  in SendQueuedPackets()
337             sTxPacketQueueTail->mNext = packet->mNext;  in SendQueuedPackets()
342         packet->mNext     = sFreeTxPacketHead;  in SendQueuedPackets()
343         sFreeTxPacketHead = packet;  in SendQueuedPackets()
349     TxPacket *packet;  in EnqueuePacket()  local
355     packet            = sFreeTxPacketHead;  in EnqueuePacket()
358     memcpy(packet->mBuffer, aBuffer, aLength);  in EnqueuePacket()
359     packet->mLength       = aLength;  in EnqueuePacket()
360     packet->mDestSockAddr = *aDestSockAddr;  in EnqueuePacket()
366         packet->mNext      = packet;  in EnqueuePacket()
367         sTxPacketQueueTail = packet;  in EnqueuePacket()
371         packet->mNext             = sTxPacketQueueTail->mNext;  in EnqueuePacket()
372         sTxPacketQueueTail->mNext = packet;  in EnqueuePacket()
373         sTxPacketQueueTail        = packet;  in EnqueuePacket()