[SCSI] libiscsi: add helper to convert addr to string
This adds a helper to convert a addr struct to
a string. This will be used by the drivers in
the next patches.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
index da8b615..0c550d5 100644
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -3352,6 +3352,47 @@
}
EXPORT_SYMBOL_GPL(iscsi_session_get_param);
+int iscsi_conn_get_addr_param(struct sockaddr_storage *addr,
+ enum iscsi_param param, char *buf)
+{
+ struct sockaddr_in6 *sin6 = NULL;
+ struct sockaddr_in *sin = NULL;
+ int len;
+
+ switch (addr->ss_family) {
+ case AF_INET:
+ sin = (struct sockaddr_in *)addr;
+ break;
+ case AF_INET6:
+ sin6 = (struct sockaddr_in6 *)addr;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (param) {
+ case ISCSI_PARAM_CONN_ADDRESS:
+ case ISCSI_HOST_PARAM_IPADDRESS:
+ if (sin)
+ len = sprintf(buf, "%pI4\n", &sin->sin_addr.s_addr);
+ else
+ len = sprintf(buf, "%pI6\n", &sin6->sin6_addr);
+ break;
+ case ISCSI_PARAM_CONN_PORT:
+ if (sin)
+ len = sprintf(buf, "%hu\n", be16_to_cpu(sin->sin_port));
+ else
+ len = sprintf(buf, "%hu\n",
+ be16_to_cpu(sin6->sin6_port));
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return len;
+}
+EXPORT_SYMBOL_GPL(iscsi_conn_get_addr_param);
+
int iscsi_conn_get_param(struct iscsi_cls_conn *cls_conn,
enum iscsi_param param, char *buf)
{
@@ -3416,9 +3457,6 @@
case ISCSI_HOST_PARAM_INITIATOR_NAME:
len = sprintf(buf, "%s\n", ihost->initiatorname);
break;
- case ISCSI_HOST_PARAM_IPADDRESS:
- len = sprintf(buf, "%s\n", ihost->local_address);
- break;
default:
return -ENOSYS;
}