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authorSagi Grimberg <sagi@grimberg.me>2018-10-18 17:40:40 -0700
committerChristoph Hellwig <hch@lst.de>2018-10-19 14:22:24 +0200
commitb7c7be6f6bd28ffea7f608ac2d806b8a4bdc82fe (patch)
treeeb4a21a9f531055161d0fc348633b38c15d7b664 /drivers/nvme
parentbb59b8e57493465fac8658bba103f7c4cc5d874a (diff)
downloadlinux-b7c7be6f6bd28ffea7f608ac2d806b8a4bdc82fe.tar.bz2
nvme-fabrics: move controller options matching to fabrics
IP transports will most likely use the same controller options matching when detecting a duplicate connect. Move it to fabrics. Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/nvme')
-rw-r--r--drivers/nvme/host/fabrics.c30
-rw-r--r--drivers/nvme/host/fabrics.h2
-rw-r--r--drivers/nvme/host/rdma.c35
3 files changed, 33 insertions, 34 deletions
diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c
index bcd09d3a44da..bd0969db6225 100644
--- a/drivers/nvme/host/fabrics.c
+++ b/drivers/nvme/host/fabrics.c
@@ -868,6 +868,36 @@ static int nvmf_check_required_opts(struct nvmf_ctrl_options *opts,
return 0;
}
+bool nvmf_ip_options_match(struct nvme_ctrl *ctrl,
+ struct nvmf_ctrl_options *opts)
+{
+ if (!nvmf_ctlr_matches_baseopts(ctrl, opts) ||
+ strcmp(opts->traddr, ctrl->opts->traddr) ||
+ strcmp(opts->trsvcid, ctrl->opts->trsvcid))
+ return false;
+
+ /*
+ * Checking the local address is rough. In most cases, none is specified
+ * and the host port is selected by the stack.
+ *
+ * Assume no match if:
+ * - local address is specified and address is not the same
+ * - local address is not specified but remote is, or vice versa
+ * (admin using specific host_traddr when it matters).
+ */
+ if ((opts->mask & NVMF_OPT_HOST_TRADDR) &&
+ (ctrl->opts->mask & NVMF_OPT_HOST_TRADDR)) {
+ if (strcmp(opts->host_traddr, ctrl->opts->host_traddr))
+ return false;
+ } else if ((opts->mask & NVMF_OPT_HOST_TRADDR) ||
+ (ctrl->opts->mask & NVMF_OPT_HOST_TRADDR)) {
+ return false;
+ }
+
+ return true;
+}
+EXPORT_SYMBOL_GPL(nvmf_ip_options_match);
+
static int nvmf_check_allowed_opts(struct nvmf_ctrl_options *opts,
unsigned int allowed_opts)
{
diff --git a/drivers/nvme/host/fabrics.h b/drivers/nvme/host/fabrics.h
index aa2fdb2a2e8f..6ea6275f332a 100644
--- a/drivers/nvme/host/fabrics.h
+++ b/drivers/nvme/host/fabrics.h
@@ -166,6 +166,8 @@ blk_status_t nvmf_fail_nonready_command(struct nvme_ctrl *ctrl,
struct request *rq);
bool __nvmf_check_ready(struct nvme_ctrl *ctrl, struct request *rq,
bool queue_live);
+bool nvmf_ip_options_match(struct nvme_ctrl *ctrl,
+ struct nvmf_ctrl_options *opts);
static inline bool nvmf_check_ready(struct nvme_ctrl *ctrl, struct request *rq,
bool queue_live)
diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index 03fff72b96f1..d181cafedc58 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -1856,39 +1856,6 @@ static const struct nvme_ctrl_ops nvme_rdma_ctrl_ops = {
.stop_ctrl = nvme_rdma_stop_ctrl,
};
-static inline bool
-__nvme_rdma_options_match(struct nvme_rdma_ctrl *ctrl,
- struct nvmf_ctrl_options *opts)
-{
- if (!nvmf_ctlr_matches_baseopts(&ctrl->ctrl, opts) ||
- strcmp(opts->traddr, ctrl->ctrl.opts->traddr) ||
- strcmp(opts->trsvcid, ctrl->ctrl.opts->trsvcid))
- return false;
-
- /*
- * checking the local address is rough. In most cases, one
- * is not specified and the host port is selected by the stack.
- *
- * Assume no match if:
- * local address is specified and address is not the same
- * local address is not specified but remote is, or vice versa
- * (admin using specific host_traddr when it matters).
- */
- if (opts->mask & NVMF_OPT_HOST_TRADDR &&
- ctrl->ctrl.opts->mask & NVMF_OPT_HOST_TRADDR) {
- if (strcmp(opts->host_traddr, ctrl->ctrl.opts->host_traddr))
- return false;
- } else if (opts->mask & NVMF_OPT_HOST_TRADDR ||
- ctrl->ctrl.opts->mask & NVMF_OPT_HOST_TRADDR)
- return false;
- /*
- * if neither controller had an host port specified, assume it's
- * a match as everything else matched.
- */
-
- return true;
-}
-
/*
* Fails a connection request if it matches an existing controller
* (association) with the same tuple:
@@ -1909,7 +1876,7 @@ nvme_rdma_existing_controller(struct nvmf_ctrl_options *opts)
mutex_lock(&nvme_rdma_ctrl_mutex);
list_for_each_entry(ctrl, &nvme_rdma_ctrl_list, list) {
- found = __nvme_rdma_options_match(ctrl, opts);
+ found = nvmf_ip_options_match(&ctrl->ctrl, opts);
if (found)
break;
}