Users Guide

8–VMware Driver Software
Driver Parameters
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qfle3f_autodiscovery
The qfle3f_autodiscovery parameter controls auto-FCoE discovery during
system boot. Set to 0 (default) to disable auto-FCoE discovery. Set to 1 to
enable auto-FCoE discovery.
qfle3f_create vmkMgmt_Entry
The qfle3f_createvmkMgmt_Entry parameter creates the vmkMgmt
interface. Set to 0 if the vmkMgmt interface will not be used. Set to 1 (default)
to create the vmkMgmt interface.
Driver Defaults
The following sections list the defaults for the Ethernet drivers.
bnx2
Defaults for the bnx2 VMware ESXi driver are listed in Table 8-3.
Table 8-3. bnx2 Driver Defaults
Parameter Default
Speed Autonegotiation with all speeds advertised
Flow Control Autonegotiation with Rx and Tx advertised
MTU 1500 (range 46–9000)
Rx Ring Size 255 (range 0–4080)
Rx Jumbo Ring Size 0 (range 0–16320) automatically adjusted by the driver
based on MTU and Rx Ring Size
Tx Ring Size 255 (range (MAX_SKB_FRAGS+1) – 255)
MAX_SKB_FRAGS varies on different kernels and differ-
ent architectures. On a 2.6/3.x kernel for x86,
MAX_SKB_FRAGS is 18.
Number of RSS Channels Varies depending on the number of CPUs (range 1–8).
Number of TSS Channels Varies depending on the number of CPUs (range 1–8).
Coalesce Rx μsecs 18 (range 0–1023)
Coalesce Rx μsecs IRQ 18 (range 0–1023)
Coalesce Rx frames 12 (range 0–255)
Coalesce Rx frames IRQ 2 (range 0–255)
Coalesce Tx μsecs 80 (range 0–1023)
Coalesce Tx μsecs IRQ 18 (range 0–1023)