#include <linux/stat.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
+#include <linux/mutex.h>
#include <net/ip_vs.h>
/* ipvs application list head */
static LIST_HEAD(ip_vs_app_list);
-static DECLARE_MUTEX(__ip_vs_app_mutex);
+static DEFINE_MUTEX(__ip_vs_app_mutex);
/*
if (!pp->unregister_app)
return -EOPNOTSUPP;
- inc = kmalloc(sizeof(struct ip_vs_app), GFP_KERNEL);
+ inc = kmemdup(app, sizeof(*inc), GFP_KERNEL);
if (!inc)
return -ENOMEM;
- memcpy(inc, app, sizeof(*inc));
INIT_LIST_HEAD(&inc->p_list);
INIT_LIST_HEAD(&inc->incs_list);
inc->app = app;
{
int result;
- down(&__ip_vs_app_mutex);
+ mutex_lock(&__ip_vs_app_mutex);
result = ip_vs_app_inc_new(app, proto, port);
- up(&__ip_vs_app_mutex);
+ mutex_unlock(&__ip_vs_app_mutex);
return result;
}
/* increase the module use count */
ip_vs_use_count_inc();
- down(&__ip_vs_app_mutex);
+ mutex_lock(&__ip_vs_app_mutex);
list_add(&app->a_list, &ip_vs_app_list);
- up(&__ip_vs_app_mutex);
+ mutex_unlock(&__ip_vs_app_mutex);
return 0;
}
{
struct ip_vs_app *inc, *nxt;
- down(&__ip_vs_app_mutex);
+ mutex_lock(&__ip_vs_app_mutex);
list_for_each_entry_safe(inc, nxt, &app->incs_list, a_list) {
ip_vs_app_inc_release(inc);
list_del(&app->a_list);
- up(&__ip_vs_app_mutex);
+ mutex_unlock(&__ip_vs_app_mutex);
/* decrease the module use count */
ip_vs_use_count_dec();
struct ip_vs_app *app)
{
int diff;
- unsigned int tcp_offset = (*pskb)->nh.iph->ihl*4;
+ const unsigned int tcp_offset = ip_hdrlen(*pskb);
struct tcphdr *th;
__u32 seq;
if (!ip_vs_make_skb_writable(pskb, tcp_offset + sizeof(*th)))
return 0;
- th = (struct tcphdr *)((*pskb)->nh.raw + tcp_offset);
+ th = (struct tcphdr *)(skb_network_header(*pskb) + tcp_offset);
/*
* Remember seq number in case this pkt gets resized
struct ip_vs_app *app)
{
int diff;
- unsigned int tcp_offset = (*pskb)->nh.iph->ihl*4;
+ const unsigned int tcp_offset = ip_hdrlen(*pskb);
struct tcphdr *th;
__u32 seq;
if (!ip_vs_make_skb_writable(pskb, tcp_offset + sizeof(*th)))
return 0;
- th = (struct tcphdr *)((*pskb)->nh.raw + tcp_offset);
+ th = (struct tcphdr *)(skb_network_header(*pskb) + tcp_offset);
/*
* Remember seq number in case this pkt gets resized
static void *ip_vs_app_seq_start(struct seq_file *seq, loff_t *pos)
{
- down(&__ip_vs_app_mutex);
+ mutex_lock(&__ip_vs_app_mutex);
return *pos ? ip_vs_app_idx(*pos - 1) : SEQ_START_TOKEN;
}
static void ip_vs_app_seq_stop(struct seq_file *seq, void *v)
{
- up(&__ip_vs_app_mutex);
+ mutex_unlock(&__ip_vs_app_mutex);
}
static int ip_vs_app_seq_show(struct seq_file *seq, void *v)
return seq_open(file, &ip_vs_app_seq_ops);
}
-static struct file_operations ip_vs_app_fops = {
+static const struct file_operations ip_vs_app_fops = {
.owner = THIS_MODULE,
.open = ip_vs_app_open,
.read = seq_read,
int ip_vs_skb_replace(struct sk_buff *skb, gfp_t pri,
char *o_buf, int o_len, char *n_buf, int n_len)
{
- struct iphdr *iph;
int diff;
int o_offset;
int o_left;
skb_put(skb, diff);
memmove(skb->data + o_offset + n_len,
skb->data + o_offset + o_len, o_left);
- memcpy(skb->data + o_offset, n_buf, n_len);
+ skb_copy_to_linear_data_offset(skb, o_offset, n_buf, n_len);
}
/* must update the iph total length here */
- iph = skb->nh.iph;
- iph->tot_len = htons(skb->len);
+ ip_hdr(skb)->tot_len = htons(skb->len);
LeaveFunction(9);
return 0;