Get statistic from proc

include/dev.h

@@ -49,4 +49,7 @@ extern struct gtp5g_dev *gtp5g_find_dev(struct net *, int, int);
 extern int dev_hashtable_new(struct gtp5g_dev *, int);
 extern void gtp5g_hashtable_free(struct gtp5g_dev *);
 
+extern char *get_dev_name(void);
+extern void set_dev_name(char *);
+
 #endif // __GTP5G_DEV_H__

src/gtpu/dev.c

@@ -13,6 +13,18 @@
 #include "pktinfo.h"
 #include "log.h"
 
+char *device_name = NULL;
+
+char *get_dev_name()
+{
+    return device_name;
+}
+
+void set_dev_name(char *val)
+{
+    device_name = val;
+}
+
 struct gtp5g_dev *gtp5g_find_dev(struct net *src_net, int ifindex, int netnsfd)
 {
     struct gtp5g_dev *gtp = NULL;

src/gtpu/link.c

@@ -66,6 +66,10 @@ static int gtp5g_newlink(struct net *src_net, struct net_device *dev,
     u32 fd1;
     int hashsize, err;
 
+    if (dev != NULL && dev->name != NULL) {
+        set_dev_name(dev->name);
+    }
+
     gtp = netdev_priv(dev);
 
     if (!data[IFLA_GTP5G_FD1]) {

src/proc.c

@@ -9,6 +9,7 @@
 #include "far.h"
 
 #include "util.h"
+#include "dev.h"
 
 struct list_head proc_gtp5g_dev;
 struct proc_gtp5g_pdr {
@@ -96,6 +97,7 @@ struct proc_dir_entry *proc_gtp5g_qer = NULL;
 struct proc_dir_entry *proc_gtp5g_urr = NULL;
 struct proc_dir_entry *proc_gtp5g_qos = NULL;
 struct proc_dir_entry *proc_gtp5g_seq = NULL;
+struct proc_dir_entry *proc_gtp5g_statistic = NULL;
 struct proc_gtp5g_pdr proc_pdr;
 struct proc_gtp5g_far proc_far;
 struct proc_gtp5g_qer proc_qer;
@@ -344,6 +346,39 @@ static ssize_t proc_seq_write(struct file *filp, const char __user *buffer,
     return -1;
 }
 
+static int gtp5g_statistic_read(struct seq_file *s, void *v)
+{
+    u8 found = 0;
+    struct gtp5g_dev *gtp;
+
+
+    GTP5G_TRC(NULL, "gtp5g_statistic_read");
+
+    list_for_each_entry_rcu(gtp, &proc_gtp5g_dev, proc_list) {
+        if (strcmp(get_dev_name(), netdev_name(gtp->dev)) == 0) {
+            found = 1;
+            break;
+        }
+    }
+    if (!found) {
+        GTP5G_ERR(NULL, "Given dev: %s not exists\n", get_dev_name());
+        return -1;
+    }
+
+    seq_printf(s, "Statistic: \n");
+    seq_printf(s, "\t RX UL(bytes) : %llu\n", (u64)atomic_read(&gtp->rx.ul_byte));
+    seq_printf(s, "\t TX UL(bytes) : %llu\n", (u64)atomic_read(&gtp->tx.ul_byte));
+    seq_printf(s, "\t RX DL(bytes) : %llu\n", (u64)atomic_read(&gtp->rx.dl_byte));
+    seq_printf(s, "\t TX DL(bytes) : %llu\n", (u64)atomic_read(&gtp->tx.dl_byte));
+
+    seq_printf(s, "\t RX UL(packets) : %llu\n", (u64)atomic_read(&gtp->rx.ul_pkt));
+    seq_printf(s, "\t TX UL(packets) : %llu\n", (u64)atomic_read(&gtp->tx.ul_pkt));
+    seq_printf(s, "\t RX DL(packets) : %llu\n", (u64)atomic_read(&gtp->rx.dl_pkt));
+    seq_printf(s, "\t TX DL(packets) : %llu\n", (u64)atomic_read(&gtp->tx.dl_pkt));
+
+    return 0;
+}
+
 static ssize_t proc_pdr_write(struct file *filp, const char __user *buffer,
     size_t len, loff_t *dptr)
 {
@@ -628,6 +663,11 @@ static int proc_seq_read(struct inode *inode, struct file *file)
     return single_open(file, gtp5g_seq_read, NULL);
 }
 
+static int proc_statistic_read(struct inode *inode, struct file *file)
+{
+    return single_open(file, gtp5g_statistic_read, NULL);
+}
+
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 6, 0)
 static const struct proc_ops proc_gtp5g_dbg_ops = {
     .proc_open = proc_dbg_read,
@@ -761,6 +801,23 @@ static const struct file_operations proc_gtp5g_seq_ops = {
 };
 #endif
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 6, 0)
+static const struct proc_ops proc_gtp5g_statistic_ops = {
+    .proc_open = proc_statistic_read,
+    .proc_read = seq_read,
+    .proc_lseek = seq_lseek,
+    .proc_release = single_release,
+};
+#else
+static const struct file_operations proc_gtp5g_statistic_ops = {
+    .owner      = THIS_MODULE,
+    .open       = proc_statistic_read,
+    .read       = seq_read,
+    .llseek     = seq_lseek,
+    .release    = single_release,
+};
+#endif
+
 int create_proc(void)
 {
     proc_gtp5g = proc_mkdir("gtp5g", NULL);
@@ -817,8 +874,17 @@ int create_proc(void)
         goto remove_qos_proc;
     }
 
+    proc_gtp5g_statistic = proc_create("statistic", (S_IFREG | S_IRUGO | S_IWUGO),
+        proc_gtp5g, &proc_gtp5g_statistic_ops);
+    if (!proc_gtp5g_statistic) {
+        GTP5G_ERR(NULL, "Failed to create /proc/gtp5g/statistic\n");
+        goto remove_statistic_proc;
+    }
+
     return 0;
 
+    remove_statistic_proc:
+        remove_proc_entry("statistic", proc_gtp5g);
     remove_qos_proc:
         remove_proc_entry("qos", proc_gtp5g);
     remove_urr_proc:
@@ -838,6 +904,7 @@ int create_proc(void)
 
 void remove_proc()
 {
+    remove_proc_entry("statistic", proc_gtp5g);
     remove_proc_entry("qos", proc_gtp5g);
     remove_proc_entry("seq", proc_gtp5g);
     remove_proc_entry("urr", proc_gtp5g);