+void nvmet_execute_auth_send(struct nvmet_req *req)
+{
+ struct nvmet_ctrl *ctrl = req->sq->ctrl;
+ struct nvmf_auth_dhchap_success2_data *data;
+ void *d;
+ u32 tl;
+ u16 status = 0;
+
+ if (req->cmd->auth_send.secp != NVME_AUTH_DHCHAP_PROTOCOL_IDENTIFIER) {
+ status = NVME_SC_INVALID_FIELD | NVME_SC_DNR;
+ req->error_loc =
+ offsetof(struct nvmf_auth_send_command, secp);
+ goto done;
+ }
+ if (req->cmd->auth_send.spsp0 != 0x01) {
+ status = NVME_SC_INVALID_FIELD | NVME_SC_DNR;
+ req->error_loc =
+ offsetof(struct nvmf_auth_send_command, spsp0);
+ goto done;
+ }
+ if (req->cmd->auth_send.spsp1 != 0x01) {
+ status = NVME_SC_INVALID_FIELD | NVME_SC_DNR;
+ req->error_loc =
+ offsetof(struct nvmf_auth_send_command, spsp1);
+ goto done;
+ }
+ tl = le32_to_cpu(req->cmd->auth_send.tl);
+ if (!tl) {
+ status = NVME_SC_INVALID_FIELD | NVME_SC_DNR;
+ req->error_loc =
+ offsetof(struct nvmf_auth_send_command, tl);
+ goto done;
+ }
+ if (!nvmet_check_transfer_len(req, tl)) {
+ pr_debug("%s: transfer length mismatch (%u)\n", __func__, tl);
+ return;
+ }
+
+ d = kmalloc(tl, GFP_KERNEL);
+ if (!d) {
+ status = NVME_SC_INTERNAL;
+ goto done;
+ }
+
+ status = nvmet_copy_from_sgl(req, 0, d, tl);
+ if (status) {
+ kfree(d);
+ goto done;
+ }
+
+ data = d;
+ pr_debug("%s: ctrl %d qid %d type %d id %d step %x\n", __func__,
+ ctrl->cntlid, req->sq->qid, data->auth_type, data->auth_id,
+ req->sq->dhchap_step);
+ if (data->auth_type != NVME_AUTH_COMMON_MESSAGES &&
+ data->auth_type != NVME_AUTH_DHCHAP_MESSAGES)
+ goto done_failure1;
+ if (data->auth_type == NVME_AUTH_COMMON_MESSAGES) {
+ if (data->auth_id == NVME_AUTH_DHCHAP_MESSAGE_NEGOTIATE) {
+ /* Restart negotiation */
+ pr_debug("%s: ctrl %d qid %d reset negotiation\n", __func__,
+ ctrl->cntlid, req->sq->qid);
This is the point where you need to reset also auth config as this may
have changed and the host will not create a new controller but rather
re-authenticate on the existing controller.
i.e.
+ if (!req->sq->qid) {
+ nvmet_destroy_auth(ctrl);
+ if (nvmet_setup_auth(ctrl) < 0) {
+ pr_err("Failed to setup
re-authentication\n");
+ goto done_failure1;
+ }
+ }
+ req->sq->dhchap_step = NVME_AUTH_DHCHAP_MESSAGE_NEGOTIATE;
+ } else if (data->auth_id != req->sq->dhchap_step)
+ goto done_failure1;
+ /* Validate negotiation parameters */
+ status = nvmet_auth_negotiate(req, d);/
