[Xorp-hackers] HEADS UP: FEA Click configuration changes

[Pavlin Radoslavov]

Important only for those who use XORP + Click.

Recently there have been few improvements to the FEA Click support.
The major change is that now the FEA supports the enabling of both
kernel-level and user-level Click (which is perfectly legitimate).

As a result of that change, now the XORP FEA/Click configuration
syntax is slightly different from the example that was sent to the
mailing list about a week ago.

OLD CONFIG:
fea {
    ...
    click {
	...
	click-config-generator-file: "/path/to/config_generator"
    }
    ...
}

NEW CONFIG:
fea {
    ...
    click {
	...
	kernel-click {
	    ...
	    kernel-click-config-generator-file: "/path/to/kernel_config_generator"
	}
	user-click {
	    ...
	    user-click-config-generator-file: "/path/to/user_config_generator"
	}
    }
    ....
}


For completness, below I am including an example with the new
syntax. The example is available also from
xorp/rtrmgr/config.boot.sample

Regards,
Pavlin


/*
 * XORP Click FEA configuration example
 */
fea {
    enable-unicast-forwarding4: true
    /* enable-unicast-forwarding6: true */

    click {
	enabled: true

	/*
	 * Note: If both kernel-click and user-click are enabled, then
	 * typically kernel-click-config-generator-file and
	 * user-click-config-generator-file should point to different
	 * generator files. Otherwise, a single common generator
	 * wouldn't know whether to generate configuration for kernel-level
	 * Click or for user-level Click.
	 */
	kernel-click {
	    enabled: false
	    install-on-startup:	true
	    kernel-click-modules: "/path/to/proclikefs.o:/path/to/click.o"
	    /* XXX: On FreeBSD we need only module click.ko */
	    /* kernel-click-modules: "/path/to/click.ko" */
	    mount-directory: "/click"
	    kernel-click-config-generator-file: "/user/local/xorp/fea/xorp_fea_click_config_generator"
	}

	user-click {
	    enabled: true
	    command-file: "/usr/local/bin/click"
	    /*
	     * Note: don't add "-p <port>" as an extra argument, because it
	     * will conflict with the FEA's addition of the same argument.
	     */
	    command-extra-arguments: "-R"
	    command-execute-on-startup: true
	    control-address: 127.0.0.1
	    control-socket-port: 13000
	    startup-config-file: "/dev/null"
	    user-click-config-generator-file: "/user/local/xorp/fea/xorp_fea_click_config_generator"
	}
    }
}