Move DATA transmission into the call processor work item. In a future patch, this will be called from the I/O thread rather than being itsown work item. This will allow DATA transmission to be driven directly by incoming ACKs, pokes and timers as those are processed. The Tx queue is also split: The queue of packets prepared by sendmsg is now places in call->tx_sendmsg and the packet dispatcher decants the packets into call->tx_buffer as space becomes available in the transmission window. This allows sendmsg to run ahead of the available space to try and prevent an underflow in transmission.
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| @@ -183,6 +183,7 @@ · 182 unmodified lines | |||
| 183 | EM(rxrpc_call_queue_requeue, "QUE requeue ") \ | 183 | EM(rxrpc_call_queue_requeue, "QUE requeue ") \ |
| 184 | EM(rxrpc_call_queue_resend, "QUE resend ") \ | 184 | EM(rxrpc_call_queue_resend, "QUE resend ") \ |
| 185 | EM(rxrpc_call_queue_timer, "QUE timer ") \ | 185 | EM(rxrpc_call_queue_timer, "QUE timer ") \ |
| 186 | EM(rxrpc_call_queue_tx_data, "QUE tx-data ") \ | ||
| 186 | EM(rxrpc_call_see_accept, "SEE accept ") \ | 187 | EM(rxrpc_call_see_accept, "SEE accept ") \ |
| 187 | EM(rxrpc_call_see_activate_client, "SEE act-clnt") \ | 188 | EM(rxrpc_call_see_activate_client, "SEE act-clnt") \ |
| 188 | EM(rxrpc_call_see_connect_failed, "SEE con-fail") \ | 189 | EM(rxrpc_call_see_connect_failed, "SEE con-fail") \ |
| @@ -738,6 +739,7 @@ TRACE_EVENT(rxrpc_txqueue, · 549 unmodified lines | |||
| 738 | __field(rxrpc_seq_t, acks_hard_ack ) | 739 | __field(rxrpc_seq_t, acks_hard_ack ) |
| 739 | __field(rxrpc_seq_t, tx_bottom ) | 740 | __field(rxrpc_seq_t, tx_bottom ) |
| 740 | __field(rxrpc_seq_t, tx_top ) | 741 | __field(rxrpc_seq_t, tx_top ) |
| 742 | __field(rxrpc_seq_t, tx_prepared ) | ||
| 741 | __field(int, tx_winsize ) | 743 | __field(int, tx_winsize ) |
| 742 | ), | 744 | ), |
| 743 | 745 | ||
| @@ -747,16 +749,18 @@ TRACE_EVENT(rxrpc_txqueue, · 3 unmodified lines | |||
| 747 | __entry->acks_hard_ack = call->acks_hard_ack; | 749 | __entry->acks_hard_ack = call->acks_hard_ack; |
| 748 | __entry->tx_bottom = call->tx_bottom; | 750 | __entry->tx_bottom = call->tx_bottom; |
| 749 | __entry->tx_top = call->tx_top; | 751 | __entry->tx_top = call->tx_top; |
| 752 | __entry->tx_prepared = call->tx_prepared; | ||
| 750 | __entry->tx_winsize = call->tx_winsize; | 753 | __entry->tx_winsize = call->tx_winsize; |
| 751 | ), | 754 | ), |
| 752 | 755 | ||
| 753 | TP_printk("c=%08x %s f=%08x h=%08x n=%u/%u/%u", | 756 | TP_printk("c=%08x %s f=%08x h=%08x n=%u/%u/%u/%u", |
| 754 | __entry->call, | 757 | __entry->call, |
| 755 | __print_symbolic(__entry->why, rxrpc_txqueue_traces), | 758 | __print_symbolic(__entry->why, rxrpc_txqueue_traces), |
| 756 | __entry->tx_bottom, | 759 | __entry->tx_bottom, |
| 757 | __entry->acks_hard_ack, | 760 | __entry->acks_hard_ack, |
| 758 | __entry->tx_top - __entry->tx_bottom, | 761 | __entry->tx_top - __entry->tx_bottom, |
| 759 | __entry->tx_top - __entry->acks_hard_ack, | 762 | __entry->tx_top - __entry->acks_hard_ack, |
| 763 | __entry->tx_prepared - __entry->tx_bottom, | ||
| 760 | __entry->tx_winsize) | 764 | __entry->tx_winsize) |
| 761 | ); | 765 | ); |
| 762 | 766 | ||