Thomas, Ferruh, Andrew (Ethernet API Maintainers), A command line option was recently added to set which speed a vNIC reports when the link is up. This makes sense for Spanning Tree and other protocols which depend on link speed.
However, I suspect that this workaround rarely reflects the physical truth, and suggest that the application should handle it instead. In other words... Instead of faking it in the virtual Ethernet drivers, I suggest that rte_ethdev.h defines a special speed value for vNICs which really don't have a physical link speed: #define ETH_SPEED_NUM_NONE 0 /**< Not defined */ +#define ETH_SPEED_NUM_UNKNOWN 1 /**< Unknown (virtual device) */ #define ETH_SPEED_NUM_10M 10 /**< 10 Mbps */ Alternatively, we could expand the meaning of ETH_SPEED_NUM_NONE: -#define ETH_SPEED_NUM_NONE 0 /**< Not defined */ +#define ETH_SPEED_NUM_NONE 0 /**< Not defined or unknown (virtual device) */ The special value could also be used in cases like this: http://inbox.dpdk.org/dev/am0pr0502mb401907ade7cea27dc642df35d2...@am0pr0502mb4019.eurprd05.prod.outlook.com/T/#t Med venlig hilsen / kind regards - Morten Brørup
