dev: new device driver infra
Type: feature
Change-Id: I20c56e0d3103624407f18365c2bc1273dea5c199
Signed-off-by: Damjan Marion <damarion@cisco.com>
diff --git a/src/vnet/dev/handlers.c b/src/vnet/dev/handlers.c
new file mode 100644
index 0000000..7e7347e
--- /dev/null
+++ b/src/vnet/dev/handlers.c
@@ -0,0 +1,225 @@
+/* SPDX-License-Identifier: Apache-2.0
+ * Copyright (c) 2023 Cisco Systems, Inc.
+ */
+
+#include <vnet/vnet.h>
+#include <vnet/ethernet/ethernet.h>
+#include <vnet/dev/dev.h>
+#include <vnet/dev/counters.h>
+#include <vnet/dev/log.h>
+#include <vnet/flow/flow.h>
+
+VLIB_REGISTER_LOG_CLASS (dev_log, static) = {
+ .class_name = "dev",
+ .subclass_name = "handler",
+};
+
+clib_error_t *
+vnet_dev_port_set_max_frame_size (vnet_main_t *vnm, vnet_hw_interface_t *hw,
+ u32 frame_size)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ vnet_dev_port_t *p = vnet_dev_get_port_from_dev_instance (hw->dev_instance);
+ vnet_dev_rv_t rv;
+
+ vnet_dev_port_cfg_change_req_t req = {
+ .type = VNET_DEV_PORT_CFG_MAX_FRAME_SIZE,
+ .max_frame_size = frame_size,
+ };
+
+ log_debug (p->dev, "size %u", frame_size);
+
+ rv = vnet_dev_port_cfg_change_req_validate (vm, p, &req);
+ if (rv == VNET_DEV_ERR_NO_CHANGE)
+ return 0;
+
+ if (rv != VNET_DEV_OK)
+ return vnet_dev_port_err (vm, p, rv,
+ "new max frame size is not valid for port");
+
+ if ((rv = vnet_dev_process_port_cfg_change_req (vm, p, &req)) != VNET_DEV_OK)
+ return vnet_dev_port_err (vm, p, rv,
+ "device failed to change max frame size");
+
+ return 0;
+}
+
+u32
+vnet_dev_port_eth_flag_change (vnet_main_t *vnm, vnet_hw_interface_t *hw,
+ u32 flags)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ vnet_dev_port_t *p = vnet_dev_get_port_from_dev_instance (hw->dev_instance);
+ vnet_dev_rv_t rv;
+
+ vnet_dev_port_cfg_change_req_t req = {
+ .type = VNET_DEV_PORT_CFG_PROMISC_MODE,
+ };
+
+ switch (flags)
+ {
+ case ETHERNET_INTERFACE_FLAG_DEFAULT_L3:
+ log_debug (p->dev, "promisc off");
+ break;
+ case ETHERNET_INTERFACE_FLAG_ACCEPT_ALL:
+ log_debug (p->dev, "promisc on");
+ req.promisc = 1;
+ break;
+ default:
+ return ~0;
+ }
+
+ rv = vnet_dev_port_cfg_change_req_validate (vm, p, &req);
+ if (rv == VNET_DEV_ERR_NO_CHANGE)
+ return 0;
+
+ if (rv != VNET_DEV_OK)
+ return ~0;
+
+ rv = vnet_dev_process_port_cfg_change_req (vm, p, &req);
+ if (rv == VNET_DEV_OK || rv == VNET_DEV_ERR_NO_CHANGE)
+ return 0;
+ return ~0;
+}
+
+clib_error_t *
+vnet_dev_port_mac_change (vnet_hw_interface_t *hi, const u8 *old,
+ const u8 *new)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ vnet_dev_port_t *p = vnet_dev_get_port_from_dev_instance (hi->dev_instance);
+ vnet_dev_rv_t rv;
+
+ vnet_dev_port_cfg_change_req_t req = {
+ .type = VNET_DEV_PORT_CFG_CHANGE_PRIMARY_HW_ADDR,
+ };
+
+ vnet_dev_set_hw_addr_eth_mac (&req.addr, new);
+
+ log_debug (p->dev, "new mac %U", format_vnet_dev_hw_addr, &req.addr);
+
+ rv = vnet_dev_port_cfg_change_req_validate (vm, p, &req);
+ if (rv == VNET_DEV_ERR_NO_CHANGE)
+ return 0;
+
+ if (rv != VNET_DEV_OK)
+ return vnet_dev_port_err (vm, p, rv, "hw address is not valid for port");
+
+ if ((rv = vnet_dev_process_port_cfg_change_req (vm, p, &req)) != VNET_DEV_OK)
+ return vnet_dev_port_err (vm, p, rv, "device failed to change hw address");
+
+ return 0;
+}
+
+clib_error_t *
+vnet_dev_add_del_mac_address (vnet_hw_interface_t *hi, const u8 *address,
+ u8 is_add)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ vnet_dev_port_t *p = vnet_dev_get_port_from_dev_instance (hi->dev_instance);
+ vnet_dev_rv_t rv;
+
+ vnet_dev_port_cfg_change_req_t req = {
+ .type = is_add ? VNET_DEV_PORT_CFG_ADD_SECONDARY_HW_ADDR :
+ VNET_DEV_PORT_CFG_REMOVE_SECONDARY_HW_ADDR,
+ };
+
+ vnet_dev_set_hw_addr_eth_mac (&req.addr, address);
+
+ log_debug (p->dev, "received (addr %U is_add %u", format_vnet_dev_hw_addr,
+ &req.addr, is_add);
+
+ rv = vnet_dev_port_cfg_change_req_validate (vm, p, &req);
+ if (rv != VNET_DEV_OK)
+ return vnet_dev_port_err (vm, p, rv,
+ "provided secondary hw addresses cannot "
+ "be added/removed");
+
+ if ((rv = vnet_dev_process_port_cfg_change_req (vm, p, &req)) != VNET_DEV_OK)
+ return vnet_dev_port_err (
+ vm, p, rv, "device failed to add/remove secondary hw address");
+
+ return 0;
+}
+
+int
+vnet_dev_flow_ops_fn (vnet_main_t *vnm, vnet_flow_dev_op_t op,
+ u32 dev_instance, u32 flow_index, uword *private_data)
+{
+ vnet_dev_port_t *p = vnet_dev_get_port_from_dev_instance (dev_instance);
+ log_warn (p->dev, "unsupported request for flow_ops received");
+ return VNET_FLOW_ERROR_NOT_SUPPORTED;
+}
+
+clib_error_t *
+vnet_dev_interface_set_rss_queues (vnet_main_t *vnm, vnet_hw_interface_t *hi,
+ clib_bitmap_t *bitmap)
+{
+ vnet_dev_port_t *p = vnet_dev_get_port_from_dev_instance (hi->dev_instance);
+ log_warn (p->dev, "unsupported request for flow_ops received");
+ return vnet_error (VNET_ERR_UNSUPPORTED, "not implemented");
+}
+
+void
+vnet_dev_clear_hw_interface_counters (u32 instance)
+{
+ vnet_dev_port_t *port = vnet_dev_get_port_from_dev_instance (instance);
+ vlib_main_t *vm = vlib_get_main ();
+
+ vnet_dev_process_call_port_op_no_rv (vm, port, vnet_dev_port_clear_counters);
+}
+
+clib_error_t *
+vnet_dev_rx_mode_change_fn (vnet_main_t *vnm, u32 hw_if_index, u32 qid,
+ vnet_hw_if_rx_mode mode)
+{
+ return clib_error_return (0, "not supported");
+}
+
+void
+vnet_dev_set_interface_next_node (vnet_main_t *vnm, u32 hw_if_index,
+ u32 node_index)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
+ vnet_dev_port_t *port =
+ vnet_dev_get_port_from_dev_instance (hw->dev_instance);
+ int runtime_update = 0;
+
+ if (node_index == ~0)
+ {
+ port->intf.redirect_to_node_next_index = 0;
+ if (port->intf.feature_arc == 0)
+ {
+ port->intf.rx_next_index =
+ vnet_dev_default_next_index_by_port_type[port->attr.type];
+ runtime_update = 1;
+ }
+ port->intf.redirect_to_node = 0;
+ }
+ else
+ {
+ u16 next_index = vlib_node_add_next (vlib_get_main (),
+ port_rx_eth_node.index, node_index);
+ port->intf.redirect_to_node_next_index = next_index;
+ if (port->intf.feature_arc == 0)
+ {
+ port->intf.rx_next_index = next_index;
+ runtime_update = 1;
+ }
+ port->intf.redirect_to_node = 1;
+ }
+ port->intf.rx_next_index =
+ node_index == ~0 ?
+ vnet_dev_default_next_index_by_port_type[port->attr.type] :
+ node_index;
+
+ if (runtime_update)
+ {
+ foreach_vnet_dev_port_rx_queue (rxq, port)
+ vnet_dev_rx_queue_rt_request (
+ vm, rxq, (vnet_dev_rx_queue_rt_req_t){ .update_next_index = 1 });
+ log_debug (port->dev, "runtime update requested due to chgange in "
+ "reditect-to-next configuration");
+ }
+}