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From: Thomas Monjalon <thomas.monjalon@6wind.com>
To: "Ouyang, Changchun" <changchun.ouyang@intel.com>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH 2/2] virtio: allow running w/o vlan filtering
Date: Wed, 29 Jul 2015 14:56:45 +0200
Message-ID: <205454145.ebl7zG6qks@xps13> (raw)
In-Reply-To: <20150306082436.43415409@urahara>

Back on this old patch, it seems justified but nobody agreed.

--- a/lib/librte_pmd_virtio/virtio_ethdev.c
+++ b/lib/librte_pmd_virtio/virtio_ethdev.c
@@ -1288,7 +1288,6 @@ virtio_dev_configure(struct rte_eth_dev *dev)
            && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
                PMD_DRV_LOG(NOTICE,
                            "vlan filtering not available on this host");
-               return -ENOTSUP;
        }

2015-03-06 08:24, Stephen Hemminger:
> "Ouyang, Changchun" <changchun.ouyang@intel.com> wrote:
> > > From: Stephen Hemminger
> > > Vlan filtering is an option, and not a requirement.
> > > If host does not support filtering then it can be done in software.
> > 
> > The question is that guest only send command, no real action to do the vlan filter. 
> > So if both host and guest have no real action for vlan filter, who will do it? 
> 
> The virtio driver has features.
> Guest can not send commands to host where feature bit not enabled.
> Application can call filter_set and check if filter worked or not.
> 
> Our code already had to do MAC and VLAN validation of incoming packets
> therefore if hardware can't do vlan match, there is no problem.
> I would expect other applications would do the same thing.
> 
> Failing during configuration is bad. DPDK API should never force
> application to play "guess the working configuration" with the device
> driver or do string match on "which device is this anyway"

  reply	other threads:[~2015-07-29 12:58 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-06  0:45 [dpdk-dev] [PATCH 0/2] virtio: bugfixes Stephen Hemminger
2015-03-06  0:45 ` [dpdk-dev] [PATCH 1/2] virtio: initialize iopl when device is initialized Stephen Hemminger
2015-03-06  3:41   ` Ouyang, Changchun
2015-03-06 16:20     ` Stephen Hemminger
2015-03-06 16:33       ` David Marchand
2015-03-06 16:55         ` Stephen Hemminger
2015-03-06 22:04           ` David Marchand
2015-03-06 23:43             ` Stephen Hemminger
2015-03-07  6:53               ` David Marchand
2015-03-09 11:05       ` David Marchand
2015-03-09 14:56         ` [dpdk-dev] [PATCH 0/2] fix virtio interrupt handling David Marchand
2015-03-09 14:56           ` [dpdk-dev] [PATCH 1/2] eal/linux: move plugin load to very start of eal init David Marchand
2015-03-09 15:21             ` Neil Horman
     [not found]               ` <CALwxeUs4hPbYDPBUfz9u2AoiCoj_wwTsAyj=_1xxzuT6LLW6nw@mail.gmail.com>
2015-03-10 10:55                 ` Neil Horman
2015-10-14  0:05                   ` Stephen Hemminger
2015-10-14  9:55                     ` David Marchand
2015-03-09 14:56           ` [dpdk-dev] [PATCH 2/2] virtio: change io privilege level as early as possible David Marchand
2015-03-10 13:14             ` Neil Horman
2015-09-29 19:25               ` Stephen Hemminger
2015-09-30  8:28                 ` David Marchand
2015-09-30 14:52                   ` Neil Horman
2015-09-30 15:37                     ` Thomas Monjalon
2015-09-30 17:26                       ` Stephen Hemminger
2015-10-01 11:25                       ` Neil Horman
2015-10-12 20:08                         ` Stephen Hemminger
2015-10-14  0:07                         ` Stephen Hemminger
2015-10-14  8:00                           ` David Marchand
2015-10-14  9:49                             ` David Marchand
2015-10-14  9:50                               ` [dpdk-dev] [PATCH] eal: move interrupt init after device init David Marchand
2015-10-14 11:32                                 ` David Marchand
2015-10-20 21:22                                   ` Thomas Monjalon
2015-07-29 17:26       ` [dpdk-dev] [PATCH 1/2] virtio: initialize iopl when device is initialized Thomas Monjalon
2015-03-06  0:45 ` [dpdk-dev] [PATCH 2/2] virtio: allow running w/o vlan filtering Stephen Hemminger
2015-03-06  3:39   ` Ouyang, Changchun
2015-03-06 16:24     ` Stephen Hemminger
2015-07-29 12:56       ` Thomas Monjalon [this message]
2015-07-30  1:23         ` Ouyang, Changchun
2015-08-04 12:51         ` Vincent JARDIN
2015-08-05  1:01           ` Ouyang, Changchun
2015-08-05  1:22             ` Stephen Hemminger
2015-08-05 10:49             ` Vincent JARDIN
2015-10-21 13:58               ` Thomas Monjalon
2017-02-15  8:38                 ` Thomas Monjalon

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