[SCSI] cnic: Add new Broadcom CNIC driver.

The CNIC driver controls BNX2 hardware rings and resources used by
iSCSI.  Most hardware resources for iSCSI are separate from those
used for ethernet networking.

iSCSI uses a separate MAC address and IP address.  The CNIC driver
creates a UIO interface to handle the non-offloaded packets such as
ARP, etc in userspace.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 214a92d1ef75..f3c4a3b910bb 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -2264,6 +2264,17 @@ config BNX2
           To compile this driver as a module, choose M here: the module
           will be called bnx2.  This is recommended.
 
+config CNIC
+        tristate "Broadcom CNIC support"
+        depends on BNX2
+        depends on UIO
+        help
+          This driver supports offload features of Broadcom NetXtremeII
+          gigabit Ethernet cards.
+
+          To compile this driver as a module, choose M here: the module
+          will be called cnic.  This is recommended.
+
 config SPIDER_NET
         tristate "Spider Gigabit Ethernet driver"
         depends on PCI && (PPC_IBM_CELL_BLADE || PPC_CELLEB)