1 files changed, 42 insertions, 0 deletions

diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index 5d6313d972fc..0400e590b6a2 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -78,6 +78,46 @@ static inline int ip_vs_addr_equal(int af, const union nf_inet_addr *a,
 #include <linux/net.h>
 
 extern int ip_vs_get_debug_level(void);
+
+static inline const char *ip_vs_dbg_addr(int af, char *buf, size_t buf_len,
+                                         const union nf_inet_addr *addr,
+                                         int *idx)
+{
+        int len;
+#ifdef CONFIG_IP_VS_IPV6
+        if (af == AF_INET6)
+                len = snprintf(&buf[*idx], buf_len - *idx, "[" NIP6_FMT "]",
+                               NIP6(addr->in6)) + 1;
+        else
+#endif
+                len = snprintf(&buf[*idx], buf_len - *idx, NIPQUAD_FMT,
+                               NIPQUAD(addr->ip)) + 1;
+
+        *idx += len;
+        BUG_ON(*idx > buf_len + 1);
+        return &buf[*idx - len];
+}
+
+#define IP_VS_DBG_BUF(level, msg...)                    \
+    do {                                                \
+            char ip_vs_dbg_buf[160];                    \
+            int ip_vs_dbg_idx = 0;                      \
+            if (level <= ip_vs_get_debug_level())       \
+                    printk(KERN_DEBUG "IPVS: " msg);    \
+    } while (0)
+#define IP_VS_ERR_BUF(msg...)                           \
+    do {                                                \
+            char ip_vs_dbg_buf[160];                    \
+            int ip_vs_dbg_idx = 0;                      \
+            printk(KERN_ERR "IPVS: " msg);              \
+    } while (0)
+
+/* Only use from within IP_VS_DBG_BUF() or IP_VS_ERR_BUF macros */
+#define IP_VS_DBG_ADDR(af, addr)                        \
+    ip_vs_dbg_addr(af, ip_vs_dbg_buf,                   \
+                   sizeof(ip_vs_dbg_buf), addr,         \
+                   &ip_vs_dbg_idx)
+
 #define IP_VS_DBG(level, msg...)                        \
     do {                                                \
             if (level <= ip_vs_get_debug_level())       \
@@ -100,6 +140,8 @@ extern int ip_vs_get_debug_level(void);
                 pp->debug_packet(pp, skb, ofs, msg);    \
     } while (0)
 #else   /* NO DEBUGGING at ALL */
+#define IP_VS_DBG_BUF(level, msg...)  do {} while (0)
+#define IP_VS_ERR_BUF(msg...)  do {} while (0)
 #define IP_VS_DBG(level, msg...)  do {} while (0)
 #define IP_VS_DBG_RL(msg...)  do {} while (0)
 #define IP_VS_DBG_PKT(level, pp, skb, ofs, msg)         do {} while (0)