view packages/io/eth/current/cdl/eth_drivers.cdl @ 292:918b1f4e9403

CDL for SG list size used by all drivers.
author gthomas
date Wed, 14 Aug 2002 13:20:13 +0000
parents bd1db6a90df9
children 48a2603f1291
line wrap: on
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# ====================================================================
#
#      eth_drivers.cdl
#
#      Ethernet drivers - platform independent support
#
# ====================================================================
#####ECOSGPLCOPYRIGHTBEGIN####
## -------------------------------------------
## This file is part of eCos, the Embedded Configurable Operating System.
## Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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## or inline functions from this file, or you compile this file and link it
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#####ECOSGPLCOPYRIGHTEND####
# ====================================================================
######DESCRIPTIONBEGIN####
#
# Author(s):      gthomas
# Original data:  gthomas
# Contributors:
# Date:           2000-01-25
#
#####DESCRIPTIONEND####
#
# ====================================================================

cdl_package CYGPKG_IO_ETH_DRIVERS {
    display       "Common ethernet support"
    include_dir   cyg/io/eth
    parent        CYGPKG_IO
    description   "Platform independent ethernet drivers"

    implements    CYGPKG_NET_DRIVER_FRAMEWORK

    cdl_interface     CYGINT_IO_ETH_MULTICAST {
        display   "Driver supports multicast addressing"
        description "
          This interface defines whether or not a driver can handle
          requests for multicast addressing."
    }

    cdl_component CYGDBG_IO_ETH_DRIVERS_DEBUG {
        display          "Support printing driver debug information"
        flavor           bool
        default_value    1
        description      "
           Selecting this option will include code to allow the driver to
           print lots of information on diagnostic output such as full
           packet dumps."

        cdl_option    CYGDBG_IO_ETH_DRIVERS_DEBUG_VERBOSITY {
            display       "Driver debug output verbosity"
            flavor        data
            default_value 0
            description   "
                The value of this option indicates the default verbosity
                level of debugging output. 0 means no debugging output
                is made by default. Higher values indicate higher verbosity.
                The verbosity level may also be changed at run time by
                changing the variable cyg_io_eth_net_debug."
        }
    }

    cdl_option CYGNUM_IO_ETH_DRIVERS_SG_LIST_SIZE {
      display       "Size of scatter-gather I/O lists"
      flavor        data
      default_value 32
      description   "
         A scatter-gather list is used to pass requests to/from
         the physical device driver.  This list can typically be
         small, as the data is normally already packed into reasonable
         chunks."
    }

    cdl_component CYGPKG_IO_ETH_DRIVERS_NET {
        display       "Support for standard eCos TCP/IP stack."
        flavor        bool
        active_if     CYGPKG_NET
        requires      CYGINT_ISO_STRING_STRFUNCS
        implements    CYGINT_IO_ETH_INT_SUPPORT_REQUIRED
        default_value 1
        compile       net/eth_drv.c

    	cdl_component CYGPKG_IO_ETH_DRIVERS_WARN_NO_MBUFS {
	    display	"Warn when there are no more mbufs"
	    flavor	bool
	    default_value 1
	    description "
	        Warnings about running out of mbufs are printed to the
	        diagnostic output channel via diag_printf() if this option
	        is enabled.  Mbufs are the network stack's basic dynamic
	        memory objects that hold all packets in transit; running
	        out is bad for performance but not fatal, not a crash.
                You might want to turn off the warnings to preserve realtime
                properties of the system even in extremis."
	}

	cdl_component CYGPKG_IO_ETH_DRIVERS_SIMULATED_FAILURES {
	    display		"Simulate network failures for testing"
	    flavor		bool
	    default_value	0
	    description	"
		This package contains a suite of simulated failure modes
		for the ethernet device layer, including dropping and/or
		corrupting received packets, dropping packets queued for
		transmission, and simulating a complete network break.
	        It requires the kernel as a source of time information."

	    cdl_option CYGPKG_IO_ETH_DRIVERS_SIMULATE_DROP_RX {
		display	"Drop incoming packets (percentage)"
		flavor	booldata
		legal_values 10 50 80
		default_value 10
	    }

	    cdl_option CYGPKG_IO_ETH_DRIVERS_SIMULATE_CORRUPT_RX {
		display	"Corrupt incoming packets (percentage)"
		flavor	booldata
		legal_values 10 50 80
		default_value 10
	    }

	    cdl_option CYGPKG_IO_ETH_DRIVERS_SIMULATE_DROP_TX {
		display	"Drop outgoing packets (percentage)"
		flavor	booldata
		legal_values 10 50 80
		default_value 10
	    }

	    cdl_option CYGPKG_IO_ETH_DRIVERS_SIMULATE_LINE_CUT {
		display	"Simulate a line cut from time to time"
		flavor	bool
		default_value 0
		description "
	    	This option causes the system to drop all packets for a
	    	short random period (10s of seconds), and then act
	    	normally for up to 4 times that long.  This simulates your
	    	sysadmin fiddling with plugs in the network switch
	    	cupboard."
	    }
	}
    }

    cdl_component CYGPKG_IO_ETH_DRIVERS_STAND_ALONE {
        display       "Support for stand-alone network stack."
        flavor        bool
        active_if     !CYGPKG_NET
        requires      CYGINT_ISO_STRING_MEMFUNCS 
        default_value 1
        compile       stand_alone/eth_drv.c

        cdl_option CYGSEM_IO_ETH_DRIVERS_PASS_PACKETS {
            display          "Pass packets to an alternate stack"
            flavor           bool
            default_value    { 0 != CYGPKG_REDBOOT_NETWORKING }
            description      "
                 Define this to allow packets seen by this layer to be
                 passed on to the previous logical layer, i.e. when
                 stand-alone processing replaces system (eCos) processing."
        }

        cdl_option CYGNUM_IO_ETH_DRIVERS_NUM_PKT {
            display          "Number of \[network\] buffers"
            flavor           data
            default_value    4
            legal_values     2 to 32
            description      "
               This option is used to allocate space to buffer incoming network
               packets.  These buffers are used to hold data until they can be
               logically processed by higher layers."
        }

        cdl_option CYGSEM_IO_ETH_DRIVERS_WARN {
            display          "Show driver warnings"
            active_if        CYGPKG_REDBOOT
            flavor           bool
            default_value    0
            description      "
               Selecting this option will allows the stand-alone ethernet driver
               to display warnings on the system console when incoming network
               packets are being discarded due to lack of buffer space."
        }
    }

    cdl_component CYGPKG_IO_ETH_DRIVERS_LWIP {
        display       "Support for lwIP network stack."
        flavor        bool
        requires      !CYGPKG_NET
        active_if     CYGPKG_NET_LWIP
        default_value 1
        implements    CYGINT_IO_ETH_INT_SUPPORT_REQUIRED
        compile       lwip/eth_drv.c
    }	

    cdl_interface CYGINT_IO_ETH_INT_SUPPORT_REQUIRED {
        display       "Interrupt support required"
        flavor        booldata
        description   "This interface is used to indicate to the low
                       level device drivers that interrupt driven operation
                       is required by higher layers."
    }

    cdl_component CYGPKG_IO_ETH_DRIVERS_OPTIONS {
        display "Common ethernet support build options"
        flavor  none
	no_define

        cdl_option CYGPKG_IO_ETH_DRIVERS_CFLAGS_ADD {
            display "Additional compiler flags"
            flavor  data
            no_define
            default_value { "-D_KERNEL -D__ECOS" }
            description   "
                This option modifies the set of compiler flags for
                building the common ethernet support package. These flags are used in addition
                to the set of global flags."
        }
    }
}

# EOF eth_drivers.cdl