[dpdk-dev] [PATCH v1 1/1] doc: announce ethdev ABI change for rte_eth_dev_info.

[Thomas Monjalon]

22/11/2018 13:11, Ferruh Yigit:
> On 11/22/2018 12:09 PM, Ian Stokes wrote:
> > Maximum and minimum MTU values vary between hardware devices. In
> > hardware agnostic DPDK applications access to such information would
> > allow a more accurate way of validating and setting supported MTU values on
> > a per device basis rather than using a defined default for all devices.
> > 
> > The following solution was proposed:
> > 
> > http://mails.dpdk.org/archives/dev/2018-September/110959.html
> > 
> > This patch adds a depreciation notice for ``rte_eth_dev_info`` as new
> > members will be added to represent min and max MTU values. These can be
> > added to fit a hole in the existing structure for amd64 but not for 32 bit,
> > as such ABI change will occur as size of the structure will be impacted.
> > 
> > Signed-off-by: Ian Stokes <ian.stokes at intel.com>
> 
> Acked-by: Ferruh Yigit <ferruh.yigit at intel.com>

Acked-by: Thomas Monjalon <thomas at monjalon.net>

[...]
> > +* ethdev: Maximum and minimum MTU values vary between hardware devices. In
> > +  hardware agnostic DPDK applications access to such information would allow
> > +  a more accurate way of validating and setting supported MTU values on a per
> > +  device basis rather than using a defined default for all devices. To
> > +  resolve this, the following members will be added to ``rte_eth_dev_info``.
> > +  Note: these can be added to fit a hole in the existing structure for amd64
> > +  but not for 32 bit, as such ABI change will occur as size of the structure
> > +  will increase.
> > +
> > +  - Member ``uint16_t min_mtu`` the minimum MTU allowed.
> > +  - Member ``uint16_t max_mtu`` the maximum MTU allowed.
> > +