aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--drivers/net/e1000/e1000_main.c40
1 files changed, 24 insertions, 16 deletions
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index 73f3a85fd238..62ef267b3d64 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -2628,29 +2628,34 @@ static unsigned int e1000_update_itr(struct e1000_adapter *adapter,
2628 if (packets == 0) 2628 if (packets == 0)
2629 goto update_itr_done; 2629 goto update_itr_done;
2630 2630
2631
2632 switch (itr_setting) { 2631 switch (itr_setting) {
2633 case lowest_latency: 2632 case lowest_latency:
2634 if ((packets < 5) && (bytes > 512)) 2633 /* jumbo frames get bulk treatment*/
2634 if (bytes/packets > 8000)
2635 retval = bulk_latency;
2636 else if ((packets < 5) && (bytes > 512))
2635 retval = low_latency; 2637 retval = low_latency;
2636 break; 2638 break;
2637 case low_latency: /* 50 usec aka 20000 ints/s */ 2639 case low_latency: /* 50 usec aka 20000 ints/s */
2638 if (bytes > 10000) { 2640 if (bytes > 10000) {
2639 if ((packets < 10) || 2641 /* jumbo frames need bulk latency setting */
2640 ((bytes/packets) > 1200)) 2642 if (bytes/packets > 8000)
2643 retval = bulk_latency;
2644 else if ((packets < 10) || ((bytes/packets) > 1200))
2641 retval = bulk_latency; 2645 retval = bulk_latency;
2642 else if ((packets > 35)) 2646 else if ((packets > 35))
2643 retval = lowest_latency; 2647 retval = lowest_latency;
2644 } else if (packets <= 2 && bytes < 512) 2648 } else if (bytes/packets > 2000)
2649 retval = bulk_latency;
2650 else if (packets <= 2 && bytes < 512)
2645 retval = lowest_latency; 2651 retval = lowest_latency;
2646 break; 2652 break;
2647 case bulk_latency: /* 250 usec aka 4000 ints/s */ 2653 case bulk_latency: /* 250 usec aka 4000 ints/s */
2648 if (bytes > 25000) { 2654 if (bytes > 25000) {
2649 if (packets > 35) 2655 if (packets > 35)
2650 retval = low_latency; 2656 retval = low_latency;
2651 } else { 2657 } else if (bytes < 6000) {
2652 if (bytes < 6000) 2658 retval = low_latency;
2653 retval = low_latency;
2654 } 2659 }
2655 break; 2660 break;
2656 } 2661 }
@@ -2679,17 +2684,20 @@ static void e1000_set_itr(struct e1000_adapter *adapter)
2679 adapter->tx_itr, 2684 adapter->tx_itr,
2680 adapter->total_tx_packets, 2685 adapter->total_tx_packets,
2681 adapter->total_tx_bytes); 2686 adapter->total_tx_bytes);
2687 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2688 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
2689 adapter->tx_itr = low_latency;
2690
2682 adapter->rx_itr = e1000_update_itr(adapter, 2691 adapter->rx_itr = e1000_update_itr(adapter,
2683 adapter->rx_itr, 2692 adapter->rx_itr,
2684 adapter->total_rx_packets, 2693 adapter->total_rx_packets,
2685 adapter->total_rx_bytes); 2694 adapter->total_rx_bytes);
2695 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2696 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
2697 adapter->rx_itr = low_latency;
2686 2698
2687 current_itr = max(adapter->rx_itr, adapter->tx_itr); 2699 current_itr = max(adapter->rx_itr, adapter->tx_itr);
2688 2700
2689 /* conservative mode eliminates the lowest_latency setting */
2690 if (current_itr == lowest_latency && (adapter->itr_setting == 3))
2691 current_itr = low_latency;
2692
2693 switch (current_itr) { 2701 switch (current_itr) {
2694 /* counts and packets in update_itr are dependent on these numbers */ 2702 /* counts and packets in update_itr are dependent on these numbers */
2695 case lowest_latency: 2703 case lowest_latency:
@@ -3868,11 +3876,11 @@ e1000_clean_tx_irq(struct e1000_adapter *adapter,
3868 cleaned = (i == eop); 3876 cleaned = (i == eop);
3869 3877
3870 if (cleaned) { 3878 if (cleaned) {
3871 /* this packet count is wrong for TSO but has a 3879 struct sk_buff *skb = buffer_info->skb;
3872 * tendency to make dynamic ITR change more 3880 unsigned int segs = skb_shinfo(skb)->gso_segs;
3873 * towards bulk */ 3881 total_tx_packets += segs;
3874 total_tx_packets++; 3882 total_tx_packets++;
3875 total_tx_bytes += buffer_info->skb->len; 3883 total_tx_bytes += skb->len;
3876 } 3884 }
3877 e1000_unmap_and_free_tx_resource(adapter, buffer_info); 3885 e1000_unmap_and_free_tx_resource(adapter, buffer_info);
3878 tx_desc->upper.data = 0; 3886 tx_desc->upper.data = 0;