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authorJames Smart <jsmart2021@gmail.com>2019-05-14 14:58:03 -0700
committerChristoph Hellwig <hch@lst.de>2019-06-21 11:08:37 +0200
commit150d71f725fd2f5a0015b7fa8df0816a207d4e4b (patch)
tree80db7dabdc58740ce4de567cf791b92d68adcf2f /include/linux/nvme-fc-driver.h
parent9d09dd8d7626b9124ce4bc081aabcb0590173b27 (diff)
nvmet-fc: add transport discovery change event callback support
This patch adds support for the nvmet discovery_change transport op. In turn, the transport adds it's own LLDD api callback discovery_event op to request the LLDD to generate an RSCN for the discovery change. Signed-off-by: James Smart <jsmart2021@gmail.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Arun Easi <aeasi@marvell.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'include/linux/nvme-fc-driver.h')
-rw-r--r--include/linux/nvme-fc-driver.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/nvme-fc-driver.h b/include/linux/nvme-fc-driver.h
index c48e96436f56..98d904961b33 100644
--- a/include/linux/nvme-fc-driver.h
+++ b/include/linux/nvme-fc-driver.h
@@ -791,6 +791,11 @@ struct nvmet_fc_target_port {
* nvmefc_tgt_fcp_req.
* Entrypoint is Optional.
*
+ * @discovery_event: Called by the transport to generate an RSCN
+ * change notifications to NVME initiators. The RSCN notifications
+ * should cause the initiator to rescan the discovery controller
+ * on the targetport.
+ *
* @max_hw_queues: indicates the maximum number of hw queues the LLDD
* supports for cpu affinitization.
* Value is Mandatory. Must be at least 1.
@@ -832,6 +837,7 @@ struct nvmet_fc_target_template {
struct nvmefc_tgt_fcp_req *fcpreq);
void (*defer_rcv)(struct nvmet_fc_target_port *tgtport,
struct nvmefc_tgt_fcp_req *fcpreq);
+ void (*discovery_event)(struct nvmet_fc_target_port *tgtport);
u32 max_hw_queues;
u16 max_sgl_segments;