[SCSI] bnx2i: Added host param ISCSI_HOST_PARAM_IPADDRESS

This sysfs attribute is proven to be useful during pivot_root.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Eddie Wai <eddie.wai@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Acked-by: Anil Veerabhadrappa <anilgv@broadcom.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 22 insertions, 1 deletions

diff --git a/drivers/scsi/bnx2i/bnx2i_iscsi.c b/drivers/scsi/bnx2i/bnx2i_iscsi.c
index c66c5a45aa27..a46ccc380ab1 100644
--- a/drivers/scsi/bnx2i/bnx2i_iscsi.c
+++ b/drivers/scsi/bnx2i/bnx2i_iscsi.c
@@ -1500,6 +1500,26 @@ static int bnx2i_host_get_param(struct Scsi_Host *shost,
         case ISCSI_HOST_PARAM_NETDEV_NAME:
                 len = sprintf(buf, "%s\n", hba->netdev->name);
                 break;
+        case ISCSI_HOST_PARAM_IPADDRESS: {
+                struct list_head *active_list = &hba->ep_active_list;
+
+                read_lock_bh(&hba->ep_rdwr_lock);
+                if (!list_empty(&hba->ep_active_list)) {
+                        struct bnx2i_endpoint *bnx2i_ep;
+                        struct cnic_sock *csk;
+
+                        bnx2i_ep = list_first_entry(active_list,
+                                                    struct bnx2i_endpoint,
+                                                    link);
+                        csk = bnx2i_ep->cm_sk;
+                        if (test_bit(SK_F_IPV6, &csk->flags))
+                                len = sprintf(buf, "%pI6\n", csk->src_ip);
+                        else
+                                len = sprintf(buf, "%pI4\n", csk->src_ip);
+                }
+                read_unlock_bh(&hba->ep_rdwr_lock);
+                break;
+        }
         default:
                 return iscsi_host_get_param(shost, param, buf);
         }
@@ -2131,7 +2151,8 @@ struct iscsi_transport bnx2i_iscsi_transport = {
                                   ISCSI_LU_RESET_TMO | ISCSI_TGT_RESET_TMO |
                                   ISCSI_PING_TMO | ISCSI_RECV_TMO |
                                   ISCSI_IFACE_NAME | ISCSI_INITIATOR_NAME,
-        .host_param_mask        = ISCSI_HOST_HWADDRESS | ISCSI_HOST_NETDEV_NAME,
+        .host_param_mask        = ISCSI_HOST_HWADDRESS | ISCSI_HOST_IPADDRESS |
+                                  ISCSI_HOST_NETDEV_NAME,
         .create_session         = bnx2i_session_create,
         .destroy_session        = bnx2i_session_destroy,
         .create_conn            = bnx2i_conn_create,