add support for reporting the current portal (address/port) used
by a connection, which is needed when doing iscsi redirection.
Signed-off-by: Or Gerlitz <ogerl...@voltaire.com>
---
I followed the related flow in iscsi tcp, to support these
two params, feedback is wellcome
drivers/infiniband/ulp/iser/iscsi_iser.c | 32 ++++++++++++++++++++++++++++++-
1 file changed, 31 insertions(+), 1 deletion(-)
Index: b/drivers/infiniband/ulp/iser/iscsi_iser.c
===================================================================
--- a/drivers/infiniband/ulp/iser/iscsi_iser.c
+++ b/drivers/infiniband/ulp/iser/iscsi_iser.c
@@ -339,6 +339,7 @@ iscsi_iser_conn_bind(struct iscsi_cls_se
struct iser_conn *ib_conn;
struct iscsi_endpoint *ep;
int error;
+ struct sockaddr_in *dst_in;
error = iscsi_conn_bind(cls_session, cls_conn, is_leading);
if (error)
@@ -362,6 +363,9 @@ iscsi_iser_conn_bind(struct iscsi_cls_se
iser_conn = conn->dd_data;
ib_conn->iser_conn = iser_conn;
iser_conn->ib_conn = ib_conn;
+ dst_in = (struct sockaddr_in *)&ib_conn->cma_id->route.addr.dst_addr;
+ sprintf(conn->portal_address, "%pI4", &dst_in->sin_addr.s_addr);
+ conn->portal_port = ntohs(dst_in->sin_port);
iser_conn_get(ib_conn); /* ref iscsi/ib conn binding */
return 0;
}
@@ -507,6 +511,30 @@ iscsi_iser_set_param(struct iscsi_cls_co
return 0;
}
+static int iscsi_iser_conn_get_param(struct iscsi_cls_conn *cls_conn,
+ enum iscsi_param param, char *buf)
+{
+ struct iscsi_conn *conn = cls_conn->dd_data;
+ int len;
+
+ switch (param) {
+ case ISCSI_PARAM_CONN_PORT:
+ spin_lock_bh(&conn->session->lock);
+ len = sprintf(buf, "%hu\n", conn->portal_port);
+ spin_unlock_bh(&conn->session->lock);
+ break;
+ case ISCSI_PARAM_CONN_ADDRESS:
+ spin_lock_bh(&conn->session->lock);
+ len = sprintf(buf, "%s\n", conn->portal_address);
+ spin_unlock_bh(&conn->session->lock);
+ break;
+ default:
+ return iscsi_conn_get_param(cls_conn, param, buf);
+ }
+
+ return len;
+}
+
static void
iscsi_iser_conn_get_stats(struct iscsi_cls_conn *cls_conn, struct iscsi_stats
*stats)
{
@@ -637,6 +665,8 @@ static struct iscsi_transport iscsi_iser
ISCSI_MAX_BURST |
ISCSI_PDU_INORDER_EN |
ISCSI_DATASEQ_INORDER_EN |
+ ISCSI_CONN_PORT |
+ ISCSI_CONN_ADDRESS |
ISCSI_EXP_STATSN |
ISCSI_PERSISTENT_PORT |
ISCSI_PERSISTENT_ADDRESS |
@@ -658,7 +688,7 @@ static struct iscsi_transport iscsi_iser
.bind_conn = iscsi_iser_conn_bind,
.destroy_conn = iscsi_iser_conn_destroy,
.set_param = iscsi_iser_set_param,
- .get_conn_param = iscsi_conn_get_param,
+ .get_conn_param = iscsi_iser_conn_get_param,
.get_session_param = iscsi_session_get_param,
.start_conn = iscsi_iser_conn_start,
.stop_conn = iscsi_iser_conn_stop,
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