From: Keiichi KII <[email protected]>
This patch contains the following changes.
To add port dynamically, create "add" element in /sys/class/misc/netconsole.
ex)
1. echo "eth0" > /sys/clas/misc/netconsole/add
then the port is added with the default settings.
2. echo "@/eth0,@192.168.0.1/" > /sys/class/misc/netconsole/add
then the port is added with the settings sending kernel messages
to 192.168.0.1 using eth0 device.
-+- /sys/class/misc/
|-+- netconsole/
|--- add [-w-------] If you write parameter(network interface name
| or one config parameter of netconsole), The
| port related its config is added
|--- port1/
|--- port2/
...
Signed-off-by: Keiichi KII <[email protected]>
---
--- linux-2.6.19/drivers/net/netconsole.c 2006-12-06 14:37:26.874827500 +0900
+++ enhanced-netconsole/drivers/net/netconsole.c.add 2006-12-06
13:33:05.661516750 +0900
@@ -321,6 +321,50 @@ static struct miscdevice netcon_miscdev
.name = "netconsole",
};
+static ssize_t set_netconmisc_add(struct class_device *cdev, const char *buf,
+ size_t count)
+{
+ char *target;
+ char *target_param;
+
+ target_param = (char*)kmalloc(count+1, GFP_ATOMIC);
+ if (!target_param) {
+ printk(KERN_INFO "netconsole: kmalloc() failed!\n");
+ return -ENOMEM;
+ }
+
+ strcpy(target_param, buf);
+ if (target_param[count - 1] == '\n') {
+ target_param[count - 1] = '\0';
+ }
+
+ if (dev_get_by_name(target_param)) {
+ printk(KERN_INFO "netconsole: device name = [%s]\n",
+ target_param);
+ target = (char*)kmalloc(MAX_CONFIG_LENGTH+1, GFP_ATOMIC);
+ if (!target) {
+ printk(KERN_INFO "netconsole: kmalloc() failed!\n");
+ kfree(target_param);
+ return -ENOMEM;
+ }
+ sprintf(target,"@/%s,@/", target_param);
+ add_netcon_dev(target);
+ kfree(target);
+ } else {
+ printk(KERN_INFO "netconsole: config = [%s]\n", target_param);
+ add_netcon_dev(target_param);
+ }
+ kfree(target_param);
+
+ return count;
+}
+
+static CLASS_DEVICE_ATTR(add, S_IWUSR, NULL, set_netconmisc_add);
+
+static struct class_device_attribute *netcon_misc_attr[] = {
+ &class_device_attr_add,
+};
+
static struct netpoll np = {
.name = "netconsole",
.dev_name = "eth0",
@@ -446,6 +490,7 @@ static int __init init_netconsole(void)
{
char *p;
char *tmp = config;
+ int i = 0;
if (misc_register(&netcon_miscdev)) {
printk(KERN_INFO
@@ -456,6 +501,11 @@ static int __init init_netconsole(void)
}
register_console(&netconsole);
+ for(i=0; i < ARRAY_SIZE(netcon_misc_attr); i++) {
+ class_device_create_file(netcon_miscdev.class,
+ netcon_misc_attr[i]);
+ }
+
if(!strlen(config)) {
printk(KERN_INFO "netconsole: not configured\n");
return 0;
--
Keiichi KII
NEC Corporation OSS Promotion Center
E-mail: [email protected]
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