Function ulp_ctx_session_open

dpdk/drivers/net/bnxt/tf_ulp/bnxt_ulp.c:816–875

* Initialize an ULP session. * An ULP session will contain all the resources needed to support rte flow * offloads. A session is initialized as part of rte_eth_device start. * A single vswitch instance can have multiple uplinks which means * rte_eth_device start will be called for each of these devices. * ULP session manager will make sure that a single ULP session is only * initialized once

 * all opened ULP sessions.
 */
static int32_t
ulp_ctx_session_open(struct bnxt *bp,
		     struct bnxt_ulp_session_state *session)
{
	struct rte_eth_dev		*ethdev = bp->eth_dev;
	int32_t				rc = 0;
	struct tf_open_session_parms	params;
	struct tf_session_resources	*resources;
	uint32_t ulp_dev_id = BNXT_ULP_DEVICE_ID_LAST;
	uint8_t app_id;
	struct tf *tfp;

	memset(&params, 0, sizeof(params));

	rc = rte_eth_dev_get_name_by_port(ethdev->data->port_id,
					  params.ctrl_chan_name);
	if (rc) {
		BNXT_TF_DBG(ERR, "Invalid port %d, rc = %d\n",
			    ethdev->data->port_id, rc);
		return rc;
	}

	rc = bnxt_ulp_cntxt_app_id_get(bp->ulp_ctx, &app_id);
	if (rc) {
		BNXT_TF_DBG(ERR, "Unable to get the app id from ulp.\n");
		return -EINVAL;
	}

	rc = bnxt_ulp_cntxt_dev_id_get(bp->ulp_ctx, &ulp_dev_id);
	if (rc) {
		BNXT_TF_DBG(ERR, "Unable to get device id from ulp.\n");
		return rc;
	}

	params.device_type = bnxt_ulp_cntxt_convert_dev_id(ulp_dev_id);
	resources = &params.resources;
	rc = bnxt_ulp_tf_resources_get(bp->ulp_ctx,
				       BNXT_ULP_SESSION_TYPE_DEFAULT,
				       resources);
	if (rc)
		return rc;

	params.bp = bp;

	tfp = bnxt_ulp_bp_tfp_get(bp, BNXT_ULP_SESSION_TYPE_DEFAULT);
	rc = tf_open_session(tfp, &params);
	if (rc) {
		BNXT_TF_DBG(ERR, "Failed to open TF session - %s, rc = %d\n",
			    params.ctrl_chan_name, rc);
		return -EINVAL;
	}
	rc = bnxt_ulp_session_tfp_set(session,
				      BNXT_ULP_SESSION_TYPE_DEFAULT, tfp);
	if (rc) {
		BNXT_TF_DBG(ERR, "Failed to set TF session - %s, rc = %d\n",
			    params.ctrl_chan_name, rc);
		return -EINVAL;
	}