Thank you for the confirmation!
Best regards, Yasu From: "Xing, Beilei" <[email protected]> Subject: RE: ETH_RSS_IP only does not seem to balance traffic Date: Fri, 14 Jan 2022 01:44:45 +0000 Message-ID: <dm6pr11mb3098e698bc0a31ae3aba9099f7...@dm6pr11mb3098.namprd11.prod.outlook.com> > > >> -----Original Message----- >> From: Richardson, Bruce <[email protected]> >> Sent: Thursday, January 13, 2022 11:06 PM >> To: Yasuhiro Ohara <[email protected]> >> Cc: [email protected]; Xing, Beilei <[email protected]> >> Subject: Re: ETH_RSS_IP only does not seem to balance traffic >> >> On Thu, Jan 13, 2022 at 12:52:04AM +0900, Yasuhiro Ohara wrote: >> > >> > Hi, >> > >> > My system developper friend recently ran into a problem where l3fwd >> > does not appear to receive balanced traffic on Intel XL710, but it is >> > resolved when the attached patch is applied. >> > >> > - .rss_hf = ETH_RSS_IP, >> > + .rss_hf = ETH_RSS_IP | ETH_RSS_TCP | ETH_RSS_UDP, >> > >> > IIRC I ran into a similar problem 3 or 4 years back, but didn't report >> > then because I believed I was doing something silly. >> > But since my friend is an experienced engineer, I feel like it may be >> > better (for the community) to ask this in the list. >> > >> > We are using dpdk-stable-18.11.6 and igb_uio. >> > >> > What are we doing wrong? >> > >> > If it is not a FAQ, I can test it again with more recent stable, and >> > will report the details. >> > >> For XL710 NICs, I believe that ETH_RSS_IP load balances only IP frames that >> do >> not have TCP or UDP headers also. Adding i40e driver maintainer on CC to >> comment further. > > Yes, Bruce is right. For XL710, ETH_RSS_IP doesn't cover TCP and UDP packets. > >> >> /Bruce >
