> -----Original Message----- > From: Joe Perches [mailto:joe@xxxxxxxxxxx] > Sent: Sunday, May 10, 2015 10:58 PM > To: KY Srinivasan > Cc: davem@xxxxxxxxxxxxx; netdev@xxxxxxxxxxxxxxx; linux- > kernel@xxxxxxxxxxxxxxx; devel@xxxxxxxxxxxxxxxxxxxxxx; olaf@xxxxxxxxx; > apw@xxxxxxxxxxxxx; jasowang@xxxxxxxxxx > Subject: Re: [PATCH V5 1/1] hv_netvsc: Use the xmit_more skb flag to > optimize signaling the host > > On Sun, 2015-05-10 at 21:08 -0700, K. Y. Srinivasan wrote: > > Based on the information given to this driver (via the xmit_more skb flag), > > we can defer signaling the host if more packets are on the way. This will > help > > make the host more efficient since it can potentially process a larger batch > of > > packets. Implement this optimization. > > trivia: > > I think that indirecting > VMBUS_DATA_PACKET_FLAG_COMPLETTION_REQUESTED > into a non-const temporary isn't very useful. > > Whenever overly long identifiers like VMBUS_<FOO> is used, > I think that it'd be better to use it directly and ignore > 80 column warnings. Thanks Joe; if Dave agrees, I can send v6 of this patch out. Regards, K. Y > > Same with the "sizeof(struct nvsp_message)" on two lines. > > > diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c > [] > > @@ -743,6 +743,8 @@ static inline int netvsc_send_pkt( > > u64 req_id; > > int ret; > > struct hv_page_buffer *pgbuf; > > + u32 vmbus_flags = > VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED; > > + u32 ring_avail = hv_ringbuf_avail_percent(&out_channel- > >outbound); > [] > > @@ -769,30 +771,41 @@ static inline int netvsc_send_pkt( > [] > > + ret = vmbus_sendpacket_pagebuffer_ctl(out_channel, > > + pgbuf, > > + packet->page_buf_cnt, > > + &nvmsg, > > + sizeof(struct > > + nvsp_message), > > + req_id, > > + vmbus_flags, > > + !packet->xmit_more); > > [] > > > netif_tx_stop_queue(netdev_get_tx_queue( > > ndev, q_idx)); > > This could be on one line too. > _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
