nvmet-tcp: implement host_traddr()

Implement callback to display the host transport address.

Signed-off-by: Hannes Reinecke <hare@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>

diff --git a/drivers/nvme/target/tcp.c b/drivers/nvme/target/tcp.c
index d305d7162dde8410444b3ac707757965ce3da4c8..5bff0d5464d1c9d2f3c3ba286edd6c4a7084ce38 100644 (file)
--- a/drivers/nvme/target/tcp.c
+++ b/drivers/nvme/target/tcp.c
@@ -2167,6 +2167,19 @@ static void nvmet_tcp_disc_port_addr(struct nvmet_req *req,
        }
 }
 
+static ssize_t nvmet_tcp_host_port_addr(struct nvmet_ctrl *ctrl,
+                       char *traddr, size_t traddr_len)
+{
+       struct nvmet_sq *sq = ctrl->sqs[0];
+       struct nvmet_tcp_queue *queue =
+               container_of(sq, struct nvmet_tcp_queue, nvme_sq);
+
+       if (queue->sockaddr_peer.ss_family == AF_UNSPEC)
+               return -EINVAL;
+       return snprintf(traddr, traddr_len, "%pISc",
+                       (struct sockaddr *)&queue->sockaddr_peer);
+}
+
 static const struct nvmet_fabrics_ops nvmet_tcp_ops = {
        .owner                  = THIS_MODULE,
        .type                   = NVMF_TRTYPE_TCP,
@@ -2177,6 +2190,7 @@ static const struct nvmet_fabrics_ops nvmet_tcp_ops = {
        .delete_ctrl            = nvmet_tcp_delete_ctrl,
        .install_queue          = nvmet_tcp_install_queue,
        .disc_traddr            = nvmet_tcp_disc_port_addr,
+       .host_traddr            = nvmet_tcp_host_port_addr,
 };
 
 static int __init nvmet_tcp_init(void)