It seems the only way to get the current pci-e bus speed & width
in ixgbe (and probably many other NICs) is by parsing output
of lspci -vvv.
I'd personally find it easier if this info were available via
ethtool API.
Any opinions on adding this info? I was thinking something like:
struct ethtool_bus_speed {
u32 cur_speed; /* millions of transactions per sec, or Mhz for older PCI
busses */
u32 cur_width; /* bus width */
/* Maximum values supported by NIC */
u32 max_speed;
u32 max_width;
#define BELOW_OPTIMAL_SPEED 0x1 /* Set if NIC cannot run at max speed with
current bus settings */
u32 flags;
/* Plenty of space to grow, set to zero until defined */
u32 reserved[32];
};
This could also fit in the reserved space of the
struct ethtool_drvinfo if that were preferred (and
width and flags could be a u16 to save a bit of space
in that case).
Any opinions...or suggestions for other interesting bits to add?
Thanks,
Ben
--
Ben Greear <[email protected]>
Candela Technologies Inc http://www.candelatech.com
------------------------------------------------------------------------------
LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial
Remotely access PCs and mobile devices and provide instant support
Improve your efficiency, and focus on delivering more value-add services
Discover what IT Professionals Know. Rescue delivers
http://p.sf.net/sfu/logmein_12329d2d
_______________________________________________
E1000-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/e1000-devel
To learn more about Intel® Ethernet, visit
http://communities.intel.com/community/wired
