From: "Sriram Krishnan (srirakr2)" <srirakr2@cisco.com>
To: Haiyang Zhang <haiyangz@microsoft.com>,
David Miller <davem@davemloft.net>
Cc: KY Srinivasan <kys@microsoft.com>,
Stephen Hemminger <sthemmin@microsoft.com>,
"wei.liu@kernel.org" <wei.liu@kernel.org>,
"Malcolm Bumgardner (mbumgard)" <mbumgard@cisco.com>,
"Umesha G M (ugm)" <ugm@cisco.com>,
"Niranjan M M (nimm)" <nimm@cisco.com>,
"xe-linux-external(mailer list)" <xe-linux-external@cisco.com>,
"kuba@kernel.org" <kuba@kernel.org>,
"linux-hyperv@vger.kernel.org" <linux-hyperv@vger.kernel.org>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v3] net: hyperv: add support for vlans in netvsc driver
Date: Wed, 22 Jul 2020 10:44:43 +0000 [thread overview]
Message-ID: <D02BAA42-7BBB-4A65-AA1A-08A770219B8E@cisco.com> (raw)
In-Reply-To: <BL0PR2101MB0930B942CE2E4EB875EC38C2CA780@BL0PR2101MB0930.namprd21.prod.outlook.com>
On 22/07/20, 3:48 AM, "Haiyang Zhang" <haiyangz@microsoft.com> wrote:
> If you make this change, did you see any drop in a live test? The
> "packet->total_bytes" in struct hv_netvsc_packet is for book keeping
> only, which is used for stats info, and not visible by the host at all.
> I made this suggestion because the "regular" vlan packet length was
> counted by bytes without the VLAN_HLEN(4) -- the vlan tag is
> in the skb metadata, separately from the ethernet header. I want the
> statistical data for AF_PACKET mode consistent with the regular case.
> struct hv_netvsc_packet {
> /* Bookkeeping stuff */
> u8 cp_partial; /* partial copy into send buffer */
> u8 rmsg_size; /* RNDIS header and PPI size */
> u8 rmsg_pgcnt; /* page count of RNDIS header and PPI */
> u8 page_buf_cnt;
> u16 q_idx;
> u16 total_packets;
> u32 total_bytes;
> u32 send_buf_index;
> u32 total_data_buflen;
> };
> Thanks
> - Haiyang
Sorry my bad, found out that the drop was a testbed issue and not related to the change. Patch v5 contains the recommendation.
Thanks,
Sriram
prev parent reply other threads:[~2020-07-22 10:44 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-20 16:45 [PATCH v3] net: hyperv: add support for vlans in netvsc driver Sriram Krishnan
2020-07-20 17:34 ` Stephen Hemminger
2020-07-20 17:45 ` Haiyang Zhang
2020-07-20 17:51 ` Haiyang Zhang
2020-07-20 23:27 ` David Miller
2020-07-21 7:09 ` Sriram Krishnan (srirakr2)
2020-07-21 22:18 ` Haiyang Zhang
2020-07-22 10:44 ` Sriram Krishnan (srirakr2) [this message]
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