esxcfg-nics -l
Output will be something like this:
Name PCI Driver Link Speed Duplex MAC Address MTU Description
vmnic0 0000:01:00.00 igb Down 0Mbps Half bc:30:5b:ee:b3:c8 1500 Intel Corporation I350 Gigabit Network Connection
vmnic1 0000:01:00.01 igb Down 0Mbps Half bc:30:5b:ee:b3:c9 1500 Intel Corporation I350 Gigabit Network Connection
vmnic2 0000:01:00.02 igb Down 0Mbps Half bc:30:5b:ee:b3:ca 1500 Intel Corporation I350 Gigabit Network Connection
vmnic3 0000:01:00.03 igb Down 0Mbps Half bc:30:5b:ee:b3:cb 1500 Intel Corporation I350 Gigabit Network Connection
To view driver and firmware versions for a particular NIC run this:
ethtool -i vmnic4
Output will be similar to this:
driver: ixgbe
version: 3.14.3iov
firmware-version: 0x8000042f
bus-info: 0000:03:00.0