VMware Driver SoftwareNetXtreme User Guide
Broadcom
®
October 2020 • 2CS57XX-CDUM518 Page 22
Note that the NIC # above does not correspond to the vmnic<#>. The NIC number is the system vmnic probe
order number. Optimally, the number of NetQueues matches the number of CPUs on the machine.
Driver Parameters
Several optional parameters can be supplied as a command line argument to the vmkload_mod command.
These parameters can also be set via the esxcfg-module command. See the man page for more information.
Driver Defaults
Driver Messages
The following are the most common sample messages that may be logged in the file /var/log/messages. Use
dmesg -n <level> to control the level at which messages will appear on the console. Most systems are set to
level 6 by default. To see all messages, set the level higher.
Driver Sign On
tg3.c:v3.118g (Jan 4, 2012)
NIC Detected
Table 4: VMware Driver Defaults
Parameter Default Value
Speed Autonegotiation with all speeds advertised
Flow Control Autonegotiation with rx and tx advertised
MTU 1500 (range 46–9000)
Rx Ring Size 200 (range 0–511). Some chips are fixed at 64.
Rx Jumbo Ring Size 100 (range 0–255). Not all chips support the jumbo ring and some chips that
support jumbo frames do not use the jumbo ring.
Tx Ring Size 511 (range (MAX_SKB_FRAGS+1) – 511). MAX_SKB_FRAGS varies on
different kernels and different architectures. On a 2.6 kernel for x86,
MAX_SKB_FRAGS is 18.
Coalesce RX Microseconds 20 (range 0–1023)
Coalesce RX Microseconds
irq
20 (range 0–255)
Coalesce rx frames 5 (range 0–1023)
Coalesce rx frames irq 5 (range 0–255)
Coalesce TX Microseconds 72 (range 0–1023)
Coalesce tx usecs irq 20 (range 0–255)
Coalesce tx frames 53 (range 0–1023)
Coalesce tx frames irq 5 (range 0–255)
Coalesce stats usecs 1000000 (approx. 1 sec.). Some coalescing parameters are not used or have
different defaults on some chips.
MSI Enabled (if supported by the chip and passed the interrupt test).
WoL Disabled
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