From: Keiichi KII [EMAIL PROTECTED]
This patch contains the following changes.
create a sysfs entry for netconsole in /sys/class/misc.
This entry has elements related to netconsole as follows.
You can change configuration of netconsole(writable attributes such as IP
address, port number and so on) and check current configuration of netconsole.
-+- /sys/class/misc/
|-+- netconsole/
|-+- port1/
| |--- id [r--r--r--] unique port id
| |--- remove [-w---] if you write something to remove,
| | this port is removed.
| |--- dev_name[r--r--r--] network interface name
| |--- local_ip[rw-r--r--] source IP to use, writable
| |--- local_port [rw-r--r--] source port number for UDP packets, writable
| |--- local_mac [r--r--r--] source MAC address
| |--- remote_ip [rw-r--r--] port number for logging agent, writable
| |--- remote_port [rw-r--r--] IP address for logging agent, writable
| remote_mac [rw-r--r--] MAC address for logging agent, writable
|--- port2/
|--- port3/
...
Signed-off-by: Keiichi KII [EMAIL PROTECTED]
Signed-off-by: Takayoshi Kochi [EMAIL PROTECTED]
---
[changes]
1. use ETH_ALEN from if_ether.h.
2. remove initialization for static variable.
3. follow the kernel coding style.
--- linux-mm/drivers/net/netconsole.c 2006-12-26 14:19:01.441854500 +0900
+++ enhanced-netconsole/drivers/net/netconsole.c.sysfs 2006-12-25
16:44:49.520912750 +0900
@@ -45,6 +45,8 @@
#include linux/sysrq.h
#include linux/smp.h
#include linux/netpoll.h
+#include linux/miscdevice.h
+#include linux/inet.h
MODULE_AUTHOR(Maintainer: Matt Mackall [EMAIL PROTECTED]);
MODULE_DESCRIPTION(Console driver for network interfaces);
@@ -56,18 +58,231 @@ MODULE_PARM_DESC(netconsole, netconsol
struct netconsole_target {
struct list_head list;
+ struct kobject obj;
int id;
struct netpoll np;
};
+#define MAX_PRINT_CHUNK 1000
+#define CONFIG_SEPARATOR ;
+
+struct target_attr {
+ struct attribute attr;
+ ssize_t (*show)(struct netconsole_target*, char*);
+ ssize_t (*store)(struct netconsole_target*, const char*,
+size_t count);
+};
+
static int add_target(char* target_config);
+static void setup_target_sysfs(struct netconsole_target *nt);
static void cleanup_netconsole(void);
static void delete_target(struct netconsole_target *nt);
+static int miscdev_configured;
+
static LIST_HEAD(target_list);
static DEFINE_SPINLOCK(target_list_lock);
+static ssize_t show_id(struct netconsole_target *nt, char *buf)
+{
+ return sprintf(buf, %d\n, nt-id);
+}
+
+static ssize_t show_dev_name(struct netconsole_target *nt, char *buf)
+{
+ return sprintf(buf, %s\n, nt-np.dev_name);
+}
+
+static ssize_t show_local_port(struct netconsole_target *nt, char *buf)
+{
+ return sprintf(buf, %d\n, nt-np.local_port);
+}
+
+static ssize_t show_remote_port(struct netconsole_target *nt, char *buf)
+{
+ return sprintf(buf, %d\n, nt-np.remote_port);
+}
+
+static ssize_t show_local_ip(struct netconsole_target *nt, char *buf)
+{
+ return sprintf(buf, %d.%d.%d.%d\n, HIPQUAD(nt-np.local_ip));
+}
+
+static ssize_t show_remote_ip(struct netconsole_target *nt, char *buf)
+{
+ return sprintf(buf, %d.%d.%d.%d\n, HIPQUAD(nt-np.remote_ip));
+}
+
+static ssize_t show_local_mac(struct netconsole_target *nt, char *buf)
+{
+ return sprintf(buf, %02x:%02x:%02x:%02x:%02x:%02x\n,
+ nt-np.local_mac[0], nt-np.local_mac[1],
+ nt-np.local_mac[2], nt-np.local_mac[3],
+ nt-np.local_mac[4], nt-np.local_mac[5]);
+}
+
+static ssize_t show_remote_mac(struct netconsole_target *nt, char *buf)
+{
+ return sprintf(buf, %02x:%02x:%02x:%02x:%02x:%02x\n,
+ nt-np.remote_mac[0], nt-np.remote_mac[1],
+ nt-np.remote_mac[2], nt-np.remote_mac[3],
+ nt-np.remote_mac[4], nt-np.remote_mac[5]);
+}
+
+static ssize_t store_local_port(struct netconsole_target *nt, const char *buf,
+ size_t count)
+{
+ spin_lock(target_list_lock);
+ nt-np.local_port = simple_strtol(buf, NULL, 10);
+ spin_unlock(target_list_lock);
+
+ return count;
+}
+
+static ssize_t store_remote_port(struct netconsole_target *nt, const char *buf,
+ size_t count)
+{
+ spin_lock(target_list_lock);
+ nt-np.remote_port = simple_strtol(buf, NULL, 10);
+ spin_unlock(target_list_lock);
+
+ return count;
+}
+
+static ssize_t store_local_ip(struct netconsole_target *nt, const char *buf,
+ size_t count)
+{
+ spin_lock(target_list_lock);
+ nt-np.local_ip = ntohl(in_aton(buf));
+ spin_unlock(target_list_lock);
+
+ return count;
+}
+
+static ssize_t store_remote_ip(struct netconsole_target *nt, const char *buf,
+
