From db1312dd95488b5e6ff362ff66fcf953a46b1821 Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Mon, 27 Jun 2022 11:52:05 +0200 Subject: nvmet: implement basic In-Band Authentication Implement NVMe-oF In-Band authentication according to NVMe TPAR 8006. This patch adds three additional configfs entries 'dhchap_key', 'dhchap_ctrl_key', and 'dhchap_hash' to the 'host' configfs directory. The 'dhchap_key' and 'dhchap_ctrl_key' entries need to be in the ASCII format as specified in NVMe Base Specification v2.0 section 8.13.5.8 'Secret representation'. 'dhchap_hash' defaults to 'hmac(sha256)', and can be written to to switch to a different HMAC algorithm. Signed-off-by: Hannes Reinecke Reviewed-by: Sagi Grimberg Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe --- drivers/nvme/target/core.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'drivers/nvme/target/core.c') diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c index 527a88617813..a1345790005f 100644 --- a/drivers/nvme/target/core.c +++ b/drivers/nvme/target/core.c @@ -795,6 +795,7 @@ void nvmet_sq_destroy(struct nvmet_sq *sq) wait_for_completion(&sq->confirm_done); wait_for_completion(&sq->free_done); percpu_ref_exit(&sq->ref); + nvmet_auth_sq_free(sq); if (ctrl) { /* @@ -871,6 +872,9 @@ static u16 nvmet_parse_io_cmd(struct nvmet_req *req) if (nvme_is_fabrics(cmd)) return nvmet_parse_fabrics_io_cmd(req); + if (unlikely(!nvmet_check_auth_status(req))) + return NVME_SC_AUTH_REQUIRED | NVME_SC_DNR; + ret = nvmet_check_ctrl_status(req); if (unlikely(ret)) return ret; @@ -1275,6 +1279,11 @@ u16 nvmet_check_ctrl_status(struct nvmet_req *req) req->cmd->common.opcode, req->sq->qid); return NVME_SC_CMD_SEQ_ERROR | NVME_SC_DNR; } + + if (unlikely(!nvmet_check_auth_status(req))) { + pr_warn("qid %d not authenticated\n", req->sq->qid); + return NVME_SC_AUTH_REQUIRED | NVME_SC_DNR; + } return 0; } @@ -1471,6 +1480,8 @@ static void nvmet_ctrl_free(struct kref *ref) flush_work(&ctrl->async_event_work); cancel_work_sync(&ctrl->fatal_err_work); + nvmet_destroy_auth(ctrl); + ida_free(&cntlid_ida, ctrl->cntlid); nvmet_async_events_free(ctrl); -- cgit v1.2.3