Dell Broadcom NetXtreme Family of Adapters Broadcom NetXtreme II Network Adapt - Page 36

Linux Driver Software: Broadcom NetXtreme II Network Adapter User Guide Set the multi_mode parameter to 2 as shown below to differentiate the traffic according to the VLAN PRI value. insmod bnx2x.ko multi_mode=2 pri_map=0x11110000 qs_per_cos=0x404 or modprobe bnx2x multi_mode=2 pri_map=0x11110000 qs_per_cos=0x404 Set the multi_mode parameter to 4 as shown below to differentiate the traffic according to the IP DSCP value. insmod bnx2x.ko multi_mode=4 pri_map=0x22221100 qs_per_cos=0x10101 cos_min_rate=0x30201 or modprobe bnx2x multi_mode=4 pri_map=0x22221100 qs_per_cos=0x10101 cos_min_rate=0x30201 bnx2i Driver Optional parameters en_tcp_dack, error_mask1, and error_mask2 can be supplied as command line arguments to the insmod or modprobe command for bnx2i. error_mask1 and error_mask2 "Config FW iSCSI Error Mask #", use to configure certain iSCSI protocol violation to be treated either as a warning or a fatal error. All fatal iSCSI protocol violations will result in session recovery (ERL 0). These are bit masks. Defaults: All violations will be treated as errors. CAUTION! Do not use error_mask if you are not sure about the consequences. These values are to be discussed with Broadcom development team on a case-by-case basis. This is just a mechanism to work around iSCSI implementation issues on the target side and without proper knowledge of iSCSI protocol details, users are advised not to experiment with these parameters. en_tcp_dack "Enable TCP Delayed ACK", enables/disables TCP delayed ACK feature on offloaded iSCSI connections. Defaults: TCP delayed ACK is ENABLED. For example: insmod bnx2i.ko en_tcp_dack=0 or modprobe bnx2i en_tcp_dack=0 time_stamps "Enable TCP TimeStamps", enables/disables TCP time stamp feature on offloaded iSCSI connections. Defaults: TCP time stamp option is DISABLED. For example: insmod bnx2i.ko time_stamps=1 or modprobe bnx2i time_stamps=1 sq_size "Configure SQ size", used to choose send queue size for offloaded connections and SQ size determines the maximum SCSI commands that can be queued. SQ size also has a bearing on the number of connections that can be offloaded; as QP size increases, the number of connections supported will decrease. With the default values, the BCM5708 adapter can offload 28 connections. Defaults: 128 Range: 32 to 128 Note that Broadcom validation is limited to a power of 2; for example, 32, 64, 128. rq_size file:///T|/htdocs/NETWORK/BroadCom/71921/NetXtremeII/en/linux.htm[9/26/2012 3:28:46 PM]