From: Thomas Monjalon <thomas.monjalon@6wind.com>
To: "Iremonger, Bernard" <bernard.iremonger@intel.com>
Cc: dev@dpdk.org, "Shah, Rahul R" <rahul.r.shah@intel.com>,
"Lu, Wenzhuo" <wenzhuo.lu@intel.com>,
"az5157@att.com" <az5157@att.com>,
"jerin.jacob@caviumnetworks.com" <jerin.jacob@caviumnetworks.com>
Subject: Re: [dpdk-dev] [PATCH v4 1/2] librte_ether: add internal callback functions
Date: Wed, 05 Oct 2016 19:19:40 +0200 [thread overview]
Message-ID: <3456767.oRusgI458o@xps13> (raw)
In-Reply-To: <8CEF83825BEC744B83065625E567D7C21A08F52C@IRSMSX108.ger.corp.intel.com>
2016-10-05 17:04, Iremonger, Bernard:
> > > --- a/lib/librte_ether/rte_ethdev.c
> > > +++ b/lib/librte_ether/rte_ethdev.c
> > > @@ -2510,6 +2510,20 @@ void
> > > _rte_eth_dev_callback_process(struct rte_eth_dev *dev,
> > > enum rte_eth_event_type event)
> > > {
> > > + return _rte_eth_dev_callback_process_generic(dev, event, NULL); }
> > > +
> > > +void
> > > +_rte_eth_dev_callback_process_vf(struct rte_eth_dev *dev,
> > > + enum rte_eth_event_type event, void *param) {
> > > + return _rte_eth_dev_callback_process_generic(dev, event, param);
> > }
> >
> > This function is just adding a parameter, compared to the legacy
> > _rte_eth_dev_callback_process.
> > Why calling it process_vf?
>
> The parameter is just being added for the VF event, the handling of the other events is unchanged.
>
> > And by the way, why not just replacing the legacy function?
> > As it is a driver interface, there is no ABI restriction.
>
> I thought there would be an ABI issue if the legacy function is replaced.
> The _rte_eth_dev_callback_process is exported in DPDK 2.2 and used in the following PMD's, lib and app:
>
> app/test/virtual_pmd
> drivers/net/e1000
> drivers/net/ixgbe
> drivers/net/mlx5
> drivers/net/vhost
> drivers/net/virtio
> lib/librte_ether
>
> Adding a parameter to _rte_eth_dev_callback_process() will impact all of the above.
> Will this cause an ABI issue?
No because ABI is for applications (Application Binary Interface).
Here you are just changing the driver interface. And we have no commitment
to maintain the compatibility of this interface for external drivers.
> > > --- a/lib/librte_ether/rte_ethdev.h
> > > +++ b/lib/librte_ether/rte_ethdev.h
> > > @@ -3026,6 +3026,7 @@ enum rte_eth_event_type {
> > > /**< queue state event (enabled/disabled)
> > */
> > > RTE_ETH_EVENT_INTR_RESET,
> > > /**< reset interrupt event, sent to VF on PF reset */
> > > + RTE_ETH_EVENT_VF_MBOX, /**< PF mailbox processing callback */
> > > RTE_ETH_EVENT_MAX /**< max value of this enum */
> > > };
> >
> > Either we choose to have a "generic" VF event well documented, or it is just
> > a specific event with a tip on where to find the doc.
> > Here we need at least to know how to handle the argument.
>
> It is a specific event for VF to PF messages, details on the function and arguments are in the rte_ethdev.h file.
No I think it is only explained in the ixgbe code.
next prev parent reply other threads:[~2016-10-05 17:19 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-30 15:45 [dpdk-dev] [PATCH v3 0/2] add callbacks for VF management Bernard Iremonger
2016-09-30 15:45 ` [dpdk-dev] [PATCH v3 1/2] librte_ether: add internal callback functions Bernard Iremonger
2016-10-02 9:12 ` Stephen Hemminger
2016-10-03 15:29 ` Iremonger, Bernard
2016-09-30 15:45 ` [dpdk-dev] [PATCH v3 2/2] net/ixgbe: add callback to user app on VF to PF mbox msg Bernard Iremonger
2016-10-04 14:52 ` [dpdk-dev] [PATCH v4 0/2] add callbacks for VF management Bernard Iremonger
2016-10-06 11:26 ` [dpdk-dev] [PATCH v5 00/13] modify callback " Bernard Iremonger
2016-10-06 16:48 ` [dpdk-dev] [PATCH v6 0/2] " Bernard Iremonger
2016-10-07 16:46 ` [dpdk-dev] [PATCH v7 " Bernard Iremonger
2016-10-07 22:52 ` Thomas Monjalon
2016-10-10 14:34 ` [dpdk-dev] [PATCH v8 " Bernard Iremonger
2016-10-14 0:07 ` Thomas Monjalon
2016-10-10 14:34 ` [dpdk-dev] [PATCH v8 1/2] librte_ether: modify internal callback function Bernard Iremonger
2016-10-10 14:34 ` [dpdk-dev] [PATCH v8 2/2] net/ixgbe: add callback to user app on VF to PF mbox msg Bernard Iremonger
2016-10-12 15:03 ` [dpdk-dev] [PATCH v8 0/2] add API's for VF management Bernard Iremonger
2016-10-12 17:54 ` [dpdk-dev] [PATCH v9 " Bernard Iremonger
2016-10-13 13:47 ` Bruce Richardson
2016-10-12 17:54 ` [dpdk-dev] [PATCH v9 1/2] net/ixgbe: " Bernard Iremonger
2016-10-12 17:54 ` [dpdk-dev] [PATCH v9 2/2] app/test_pmd: add tests for new API's Bernard Iremonger
2016-10-12 15:03 ` [dpdk-dev] [PATCH v8 1/2] net/ixgbe: add API's for VF management Bernard Iremonger
2016-10-12 15:03 ` [dpdk-dev] [PATCH v8 2/2] app/test_pmd: add tests for new API's Bernard Iremonger
2016-10-12 15:11 ` Thomas Monjalon
2016-10-12 15:27 ` Iremonger, Bernard
2016-10-12 15:36 ` Thomas Monjalon
2016-10-12 15:48 ` Iremonger, Bernard
2016-10-12 16:06 ` Thomas Monjalon
2016-10-12 16:21 ` Iremonger, Bernard
2016-10-12 16:31 ` Thomas Monjalon
2016-10-12 16:50 ` Iremonger, Bernard
2016-10-12 17:20 ` Iremonger, Bernard
2016-10-07 16:46 ` [dpdk-dev] [PATCH v7 1/2] librte_ether: modify internal callback function Bernard Iremonger
2016-10-07 16:46 ` [dpdk-dev] [PATCH v7 2/2] net/ixgbe: add callback to user app on VF to PF mbox msg Bernard Iremonger
2016-10-07 22:44 ` Thomas Monjalon
2016-10-10 14:31 ` Iremonger, Bernard
2016-10-06 16:48 ` [dpdk-dev] [PATCH v6 1/2] librte_ether: modify internal callback function Bernard Iremonger
2016-10-07 12:29 ` Thomas Monjalon
2016-10-07 16:57 ` Iremonger, Bernard
2016-10-06 16:48 ` [dpdk-dev] [PATCH v6 2/2] net/ixgbe: add callback to user app on VF to PF mbox msg Bernard Iremonger
2016-10-07 12:14 ` Thomas Monjalon
2016-10-07 12:19 ` Iremonger, Bernard
2016-10-06 11:26 ` [dpdk-dev] [PATCH v5 01/13] librte_ether: modify internal callback function Bernard Iremonger
2016-10-06 12:56 ` Thomas Monjalon
2016-10-06 14:33 ` Iremonger, Bernard
2016-10-06 14:56 ` Thomas Monjalon
2016-10-06 15:32 ` Iremonger, Bernard
2016-10-06 15:41 ` Thomas Monjalon
2016-10-06 15:45 ` Iremonger, Bernard
2016-10-06 11:26 ` [dpdk-dev] [PATCH v5 02/13] net/ixgbe: add callback to user app on VF to PF mbox msg Bernard Iremonger
2016-10-06 11:26 ` [dpdk-dev] [PATCH v5 03/13] app/test: add parameter to callback process function Bernard Iremonger
2016-10-06 11:26 ` [dpdk-dev] [PATCH v5 04/13] net/bonding: " Bernard Iremonger
2016-10-06 11:26 ` [dpdk-dev] [PATCH v5 05/13] net/e1000: " Bernard Iremonger
2016-10-06 11:26 ` [dpdk-dev] [PATCH v5 06/13] net/i40e: update call " Bernard Iremonger
2016-10-06 11:26 ` [dpdk-dev] [PATCH v5 07/13] net/mlx4: add parameter " Bernard Iremonger
2016-10-06 11:26 ` [dpdk-dev] [PATCH v5 08/13] net/mlx5: " Bernard Iremonger
2016-10-06 11:26 ` [dpdk-dev] [PATCH v5 09/13] net/nfp: " Bernard Iremonger
2016-10-06 11:26 ` [dpdk-dev] [PATCH v5 10/13] net/thunderx: " Bernard Iremonger
2016-10-06 11:26 ` [dpdk-dev] [PATCH v5 11/13] net/vhost: " Bernard Iremonger
2016-10-06 11:26 ` [dpdk-dev] [PATCH v5 12/13] net/virtio: " Bernard Iremonger
2016-10-06 11:26 ` [dpdk-dev] [PATCH v5 13/13] net/enic: " Bernard Iremonger
2016-10-04 14:52 ` [dpdk-dev] [PATCH v4 1/2] librte_ether: add internal callback functions Bernard Iremonger
2016-10-05 16:10 ` Thomas Monjalon
2016-10-05 17:04 ` Iremonger, Bernard
2016-10-05 17:19 ` Thomas Monjalon [this message]
2016-10-04 14:52 ` [dpdk-dev] [PATCH v4 2/2] net/ixgbe: add callback to user app on VF to PF mbox msg Bernard Iremonger
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