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path: root/drivers/net/netconsole.c
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Diffstat (limited to 'drivers/net/netconsole.c')
-rw-r--r--drivers/net/netconsole.c55
1 files changed, 27 insertions, 28 deletions
diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c
index 69233f6aa05c..f1c2a2defd70 100644
--- a/drivers/net/netconsole.c
+++ b/drivers/net/netconsole.c
@@ -35,35 +35,32 @@
****************************************************************/
#include <linux/mm.h>
-#include <linux/tty.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/console.h>
-#include <linux/tty_driver.h>
#include <linux/moduleparam.h>
#include <linux/string.h>
-#include <linux/sysrq.h>
-#include <linux/smp.h>
#include <linux/netpoll.h>
MODULE_AUTHOR("Maintainer: Matt Mackall <mpm@selenic.com>");
MODULE_DESCRIPTION("Console driver for network interfaces");
MODULE_LICENSE("GPL");
-static char config[256];
-module_param_string(netconsole, config, 256, 0);
+#define MAX_PARAM_LENGTH 256
+#define MAX_PRINT_CHUNK 1000
+
+static char config[MAX_PARAM_LENGTH];
+module_param_string(netconsole, config, MAX_PARAM_LENGTH, 0);
MODULE_PARM_DESC(netconsole, " netconsole=[src-port]@[src-ip]/[dev],[tgt-port]@<tgt-ip>/[tgt-macaddr]\n");
static struct netpoll np = {
- .name = "netconsole",
- .dev_name = "eth0",
- .local_port = 6665,
- .remote_port = 6666,
- .remote_mac = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
+ .name = "netconsole",
+ .dev_name = "eth0",
+ .local_port = 6665,
+ .remote_port = 6666,
+ .remote_mac = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
};
-static int configured = 0;
-
-#define MAX_PRINT_CHUNK 1000
+static int configured;
static void write_msg(struct console *con, const char *msg, unsigned int len)
{
@@ -75,7 +72,7 @@ static void write_msg(struct console *con, const char *msg, unsigned int len)
local_irq_save(flags);
- for(left = len; left; ) {
+ for (left = len; left;) {
frag = min(left, MAX_PRINT_CHUNK);
netpoll_send_udp(&np, msg, frag);
msg += frag;
@@ -86,12 +83,12 @@ static void write_msg(struct console *con, const char *msg, unsigned int len)
}
static struct console netconsole = {
- .name = "netcon",
- .flags = CON_ENABLED | CON_PRINTBUFFER,
- .write = write_msg
+ .name = "netcon",
+ .flags = CON_ENABLED | CON_PRINTBUFFER,
+ .write = write_msg,
};
-static int option_setup(char *opt)
+static int __init option_setup(char *opt)
{
configured = !netpoll_parse_options(&np, opt);
return 1;
@@ -99,28 +96,30 @@ static int option_setup(char *opt)
__setup("netconsole=", option_setup);
-static int init_netconsole(void)
+static int __init init_netconsole(void)
{
- int err;
+ int err = 0;
- if(strlen(config))
+ if (strnlen(config, MAX_PARAM_LENGTH))
option_setup(config);
- if(!configured) {
- printk("netconsole: not configured, aborting\n");
- return 0;
+ if (!configured) {
+ printk(KERN_INFO "netconsole: not configured, aborting\n");
+ goto out;
}
err = netpoll_setup(&np);
if (err)
- return err;
+ goto out;
register_console(&netconsole);
printk(KERN_INFO "netconsole: network logging started\n");
- return 0;
+
+out:
+ return err;
}
-static void cleanup_netconsole(void)
+static void __exit cleanup_netconsole(void)
{
unregister_console(&netconsole);
netpoll_cleanup(&np);