netpoll: add IPv6 support

[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / net / netconsole.c

diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c
index 998fa02..37add21 100644 (file)
--- a/drivers/net/netconsole.c
+++ b/drivers/net/netconsole.c
@@ -269,13 +269,17 @@ static ssize_t show_remote_port(struct netconsole_target *nt, char *buf)
 
 static ssize_t show_local_ip(struct netconsole_target *nt, char *buf)
 {
-       if (!nt->np.ipv6)
+       if (nt->np.ipv6)
+               return snprintf(buf, PAGE_SIZE, "%pI6c\n", &nt->np.local_ip.in6);
+       else
                return snprintf(buf, PAGE_SIZE, "%pI4\n", &nt->np.local_ip);
 }
 
 static ssize_t show_remote_ip(struct netconsole_target *nt, char *buf)
 {
-       if (!nt->np.ipv6)
+       if (nt->np.ipv6)
+               return snprintf(buf, PAGE_SIZE, "%pI6c\n", &nt->np.remote_ip.in6);
+       else
                return snprintf(buf, PAGE_SIZE, "%pI4\n", &nt->np.remote_ip);
 }
 
@@ -412,8 +416,22 @@ static ssize_t store_local_ip(struct netconsole_target *nt,
                return -EINVAL;
        }
 
-       if (!strnchr(buf, count, ':'))
-               nt->np.local_ip.ip = in_aton(buf);
+       if (strnchr(buf, count, ':')) {
+               const char *end;
+               if (in6_pton(buf, count, nt->np.local_ip.in6.s6_addr, -1, &end) > 0) {
+                       if (*end && *end != '\n') {
+                               printk(KERN_ERR "netconsole: invalid IPv6 address at: <%c>\n", *end);
+                               return -EINVAL;
+                       }
+                       nt->np.ipv6 = true;
+               } else
+                       return -EINVAL;
+       } else {
+               if (!nt->np.ipv6) {
+                       nt->np.local_ip.ip = in_aton(buf);
+               } else
+                       return -EINVAL;
+       }
 
        return strnlen(buf, count);
 }
@@ -429,8 +447,22 @@ static ssize_t store_remote_ip(struct netconsole_target *nt,
                return -EINVAL;
        }
 
-       if (!strnchr(buf, count, ':'))
-               nt->np.remote_ip.ip = in_aton(buf);
+       if (strnchr(buf, count, ':')) {
+               const char *end;
+               if (in6_pton(buf, count, nt->np.remote_ip.in6.s6_addr, -1, &end) > 0) {
+                       if (*end && *end != '\n') {
+                               printk(KERN_ERR "netconsole: invalid IPv6 address at: <%c>\n", *end);
+                               return -EINVAL;
+                       }
+                       nt->np.ipv6 = true;
+               } else
+                       return -EINVAL;
+       } else {
+               if (!nt->np.ipv6) {
+                       nt->np.remote_ip.ip = in_aton(buf);
+               } else
+                       return -EINVAL;
+       }
 
        return strnlen(buf, count);
 }