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| author |   James Smart <jsmart2021@gmail.com> | 2019-05-14 14:58:03 -0700 |
|---|---|---|
| committer |   Christoph Hellwig <hch@lst.de> | 2019-06-21 11:08:37 +0200 |
| commit | 150d71f725fd2f5a0015b7fa8df0816a207d4e4b (patch) | |
| tree | 80db7dabdc58740ce4de567cf791b92d68adcf2f | |
| parent | nvmet: add transport discovery change op (diff) | |
| download | wireguard-linux-150d71f725fd2f5a0015b7fa8df0816a207d4e4b.tar.xz wireguard-linux-150d71f725fd2f5a0015b7fa8df0816a207d4e4b.zip | |
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>
| -rw-r--r-- | drivers/nvme/target/fc.c | 11 | ||||
| -rw-r--r-- | include/linux/nvme-fc-driver.h | 6 |
2 files changed, 17 insertions, 0 deletions
diff --git a/drivers/nvme/target/fc.c b/drivers/nvme/target/fc.c index 508661af0f50..1f252c9a953a 100644 --- a/drivers/nvme/target/fc.c +++ b/drivers/nvme/target/fc.c @@ -2549,6 +2549,16 @@ nvmet_fc_remove_port(struct nvmet_port *port) kfree(pe); } +static void +nvmet_fc_discovery_chg(struct nvmet_port *port) +{ + struct nvmet_fc_port_entry *pe = port->priv; + struct nvmet_fc_tgtport *tgtport = pe->tgtport; + + if (tgtport && tgtport->ops->discovery_event) + tgtport->ops->discovery_event(&tgtport->fc_target_port); +} + static const struct nvmet_fabrics_ops nvmet_fc_tgt_fcp_ops = { .owner = THIS_MODULE, .type = NVMF_TRTYPE_FC, @@ -2557,6 +2567,7 @@ static const struct nvmet_fabrics_ops nvmet_fc_tgt_fcp_ops = { .remove_port = nvmet_fc_remove_port, .queue_response = nvmet_fc_fcp_nvme_cmd_done, .delete_ctrl = nvmet_fc_delete_ctrl, + .discovery_chg = nvmet_fc_discovery_chg, }; static int __init nvmet_fc_init_module(void) 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; |