| Message ID | 20210106144208.1935-2-liew.s.piaw@gmail.com (mailing list archive) |
|---|---|
| State | Accepted |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | bcm63xx_enet: major makeover of driver | expand |
| Context | Check | Description |
|---|---|---|
| netdev/cover_letter | success | Link |
| netdev/fixes_present | success | Link |
| netdev/patch_count | success | Link |
| netdev/tree_selection | success | Clearly marked for net-next |
| netdev/subject_prefix | success | Link |
| netdev/cc_maintainers | warning | 4 maintainers not CCed: kuba@kernel.org davem@davemloft.net tangbin@cmss.chinamobile.com leon@kernel.org |
| netdev/source_inline | success | Was 0 now: 0 |
| netdev/verify_signedoff | success | Link |
| netdev/module_param | success | Was 0 now: 0 |
| netdev/build_32bit | success | Errors and warnings before: 0 this patch: 0 |
| netdev/kdoc | success | Errors and warnings before: 0 this patch: 0 |
| netdev/verify_fixes | success | Link |
| netdev/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 25 lines checked |
| netdev/build_allmodconfig_warn | success | Errors and warnings before: 0 this patch: 0 |
| netdev/header_inline | success | Link |
| netdev/stable | success | Stable not CCed |
On 1/6/21 6:42 AM, Sieng Piaw Liew wrote: > Use netif_receive_skb_list to batch process rx skb. > Tested on BCM6328 320 MHz using iperf3 -M 512, increasing performance > by 12.5%. > > Before: > [ ID] Interval Transfer Bandwidth Retr > [ 4] 0.00-30.00 sec 120 MBytes 33.7 Mbits/sec 277 sender > [ 4] 0.00-30.00 sec 120 MBytes 33.5 Mbits/sec receiver > > After: > [ ID] Interval Transfer Bandwidth Retr > [ 4] 0.00-30.00 sec 136 MBytes 37.9 Mbits/sec 203 sender > [ 4] 0.00-30.00 sec 135 MBytes 37.7 Mbits/sec receiver > > Signed-off-by: Sieng Piaw Liew <liew.s.piaw@gmail.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com>
diff --git a/drivers/net/ethernet/broadcom/bcm63xx_enet.c b/drivers/net/ethernet/broadcom/bcm63xx_enet.c index 916824cca3fd..b82b7805c36a 100644 --- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c +++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c @@ -297,10 +297,12 @@ static void bcm_enet_refill_rx_timer(struct timer_list *t) static int bcm_enet_receive_queue(struct net_device *dev, int budget) { struct bcm_enet_priv *priv; + struct list_head rx_list; struct device *kdev; int processed; priv = netdev_priv(dev); + INIT_LIST_HEAD(&rx_list); kdev = &priv->pdev->dev; processed = 0; @@ -391,10 +393,12 @@ static int bcm_enet_receive_queue(struct net_device *dev, int budget) skb->protocol = eth_type_trans(skb, dev); dev->stats.rx_packets++; dev->stats.rx_bytes += len; - netif_receive_skb(skb); + list_add_tail(&skb->list, &rx_list); } while (--budget > 0); + netif_receive_skb_list(&rx_list); + if (processed || !priv->rx_desc_count) { bcm_enet_refill_rx(dev);
Use netif_receive_skb_list to batch process rx skb. Tested on BCM6328 320 MHz using iperf3 -M 512, increasing performance by 12.5%. Before: [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-30.00 sec 120 MBytes 33.7 Mbits/sec 277 sender [ 4] 0.00-30.00 sec 120 MBytes 33.5 Mbits/sec receiver After: [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-30.00 sec 136 MBytes 37.9 Mbits/sec 203 sender [ 4] 0.00-30.00 sec 135 MBytes 37.7 Mbits/sec receiver Signed-off-by: Sieng Piaw Liew <liew.s.piaw@gmail.com> --- drivers/net/ethernet/broadcom/bcm63xx_enet.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)