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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/net/netdevsim/netdevsim.h
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@@ -13,11 +13,14 @@
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  * THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
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  */
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+#include <linux/debugfs.h>
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 #include <linux/device.h>
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 #include <linux/kernel.h>
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 #include <linux/list.h>
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 #include <linux/netdevice.h>
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 #include <linux/u64_stats_sync.h>
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+#include <net/devlink.h>
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+#include <net/udp_tunnel.h>
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 #include <net/xdp.h>
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25
 
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 #define DRV_NAME	"netdevsim"
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@@ -26,28 +29,9 @@
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29
 
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 #define NSIM_EA(extack, msg)	NL_SET_ERR_MSG_MOD((extack), msg)
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31
 
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-struct bpf_prog;
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-struct bpf_offload_dev;
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-struct dentry;
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-struct nsim_vf_config;
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-
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-struct netdevsim_shared_dev {
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-	unsigned int refcnt;
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-	u32 switch_id;
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-
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-	struct dentry *ddir;
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-
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-	struct bpf_offload_dev *bpf_dev;
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-
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-	struct dentry *ddir_bpf_bound_progs;
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-	u32 prog_id_gen;
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-
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-	struct list_head bpf_bound_progs;
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-	struct list_head bpf_bound_maps;
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-};
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-
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 #define NSIM_IPSEC_MAX_SA_COUNT		33
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 #define NSIM_IPSEC_VALID		BIT(31)
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+#define NSIM_UDP_TUNNEL_N_PORTS		4
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35
 
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 struct nsim_sa {
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 	struct xfrm_state *xs;
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@@ -67,20 +51,23 @@
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 	u32 ok;
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 };
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53
 
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+struct nsim_ethtool {
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+	bool rx;
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+	bool tx;
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+	bool report_stats_rx;
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+	bool report_stats_tx;
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+};
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+
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 struct netdevsim {
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 	struct net_device *netdev;
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+	struct nsim_dev *nsim_dev;
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+	struct nsim_dev_port *nsim_dev_port;
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65
 
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 	u64 tx_packets;
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 	u64 tx_bytes;
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 	struct u64_stats_sync syncp;
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69
 
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-	struct device dev;
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-	struct netdevsim_shared_dev *sdev;
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-
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-	struct dentry *ddir;
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-
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-	unsigned int num_vfs;
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-	struct nsim_vf_config *vfconfigs;
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+	struct nsim_bus_dev *nsim_bus_dev;
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 	struct bpf_prog	*bpf_offloaded;
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 	u32 bpf_offloaded_id;
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@@ -88,22 +75,38 @@
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 	struct xdp_attachment_info xdp;
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 	struct xdp_attachment_info xdp_hw;
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-	bool bpf_bind_accept;
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-	u32 bpf_bind_verifier_delay;
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-
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 	bool bpf_tc_accept;
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 	bool bpf_tc_non_bound_accept;
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 	bool bpf_xdpdrv_accept;
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 	bool bpf_xdpoffload_accept;
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 	bool bpf_map_accept;
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-#if IS_ENABLED(CONFIG_NET_DEVLINK)
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-	struct devlink *devlink;
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-#endif
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 	struct nsim_ipsec ipsec;
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+	struct {
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+		u32 inject_error;
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+		u32 sleep;
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+		u32 __ports[2][NSIM_UDP_TUNNEL_N_PORTS];
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+		u32 (*ports)[NSIM_UDP_TUNNEL_N_PORTS];
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+		struct debugfs_u32_array dfs_ports[2];
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+	} udp_ports;
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+
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+	struct nsim_ethtool ethtool;
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 };
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+struct netdevsim *
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+nsim_create(struct nsim_dev *nsim_dev, struct nsim_dev_port *nsim_dev_port);
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+void nsim_destroy(struct netdevsim *ns);
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+
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+void nsim_ethtool_init(struct netdevsim *ns);
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+
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+void nsim_udp_tunnels_debugfs_create(struct nsim_dev *nsim_dev);
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+int nsim_udp_tunnels_info_create(struct nsim_dev *nsim_dev,
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+				 struct net_device *dev);
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+void nsim_udp_tunnels_info_destroy(struct net_device *dev);
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+
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 #ifdef CONFIG_BPF_SYSCALL
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+int nsim_bpf_dev_init(struct nsim_dev *nsim_dev);
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+void nsim_bpf_dev_exit(struct nsim_dev *nsim_dev);
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 int nsim_bpf_init(struct netdevsim *ns);
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 void nsim_bpf_uninit(struct netdevsim *ns);
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 int nsim_bpf(struct net_device *dev, struct netdev_bpf *bpf);
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@@ -111,6 +114,15 @@
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 int nsim_bpf_setup_tc_block_cb(enum tc_setup_type type,
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 			       void *type_data, void *cb_priv);
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 #else
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+
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+static inline int nsim_bpf_dev_init(struct nsim_dev *nsim_dev)
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+{
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+	return 0;
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+}
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+
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+static inline void nsim_bpf_dev_exit(struct nsim_dev *nsim_dev)
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+{
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+}
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 static inline int nsim_bpf_init(struct netdevsim *ns)
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 {
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 	return 0;
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@@ -122,7 +134,7 @@
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 static inline int nsim_bpf(struct net_device *dev, struct netdev_bpf *bpf)
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 {
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-	return bpf->command == XDP_QUERY_PROG ? 0 : -EOPNOTSUPP;
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+	return -EOPNOTSUPP;
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 }
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 static inline int nsim_bpf_disable_tc(struct netdevsim *ns)
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@@ -138,7 +150,6 @@
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 }
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 #endif
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-#if IS_ENABLED(CONFIG_NET_DEVLINK)
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 enum nsim_resource_id {
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 	NSIM_RESOURCE_NONE,   /* DEVLINK_RESOURCE_ID_PARENT_TOP */
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 	NSIM_RESOURCE_IPV4,
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@@ -149,36 +160,88 @@
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 	NSIM_RESOURCE_IPV6_FIB_RULES,
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 };
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-int nsim_devlink_setup(struct netdevsim *ns);
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-void nsim_devlink_teardown(struct netdevsim *ns);
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+struct nsim_dev_health {
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+	struct devlink_health_reporter *empty_reporter;
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+	struct devlink_health_reporter *dummy_reporter;
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+	struct dentry *ddir;
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+	char *recovered_break_msg;
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+	u32 binary_len;
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+	bool fail_recover;
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+};
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-int nsim_devlink_init(void);
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-void nsim_devlink_exit(void);
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+int nsim_dev_health_init(struct nsim_dev *nsim_dev, struct devlink *devlink);
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+void nsim_dev_health_exit(struct nsim_dev *nsim_dev);
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-int nsim_fib_init(void);
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-void nsim_fib_exit(void);
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-u64 nsim_fib_get_val(struct net *net, enum nsim_resource_id res_id, bool max);
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-int nsim_fib_set_max(struct net *net, enum nsim_resource_id res_id, u64 val,
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-		     struct netlink_ext_ack *extack);
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-#else
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-static inline int nsim_devlink_setup(struct netdevsim *ns)
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+struct nsim_dev_port {
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+	struct list_head list;
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+	struct devlink_port devlink_port;
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+	unsigned int port_index;
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+	struct dentry *ddir;
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+	struct netdevsim *ns;
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+};
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+
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+struct nsim_dev {
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+	struct nsim_bus_dev *nsim_bus_dev;
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+	struct nsim_fib_data *fib_data;
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+	struct nsim_trap_data *trap_data;
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+	struct dentry *ddir;
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+	struct dentry *ports_ddir;
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+	struct dentry *take_snapshot;
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+	struct bpf_offload_dev *bpf_dev;
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+	bool bpf_bind_accept;
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+	bool bpf_bind_verifier_accept;
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+	u32 bpf_bind_verifier_delay;
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+	struct dentry *ddir_bpf_bound_progs;
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+	u32 prog_id_gen;
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+	struct list_head bpf_bound_progs;
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+	struct list_head bpf_bound_maps;
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+	struct netdev_phys_item_id switch_id;
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+	struct list_head port_list;
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+	struct mutex port_list_lock; /* protects port list */
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+	bool fw_update_status;
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+	u32 fw_update_overwrite_mask;
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+	u32 max_macs;
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+	bool test1;
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+	bool dont_allow_reload;
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+	bool fail_reload;
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+	struct devlink_region *dummy_region;
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+	struct nsim_dev_health health;
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+	struct flow_action_cookie *fa_cookie;
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+	spinlock_t fa_cookie_lock; /* protects fa_cookie */
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+	bool fail_trap_group_set;
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+	bool fail_trap_policer_set;
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+	bool fail_trap_policer_counter_get;
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+	struct {
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+		struct udp_tunnel_nic_shared utn_shared;
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+		u32 __ports[2][NSIM_UDP_TUNNEL_N_PORTS];
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+		bool sync_all;
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+		bool open_only;
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+		bool ipv4_only;
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+		bool shared;
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+		bool static_iana_vxlan;
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+		u32 sleep;
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+	} udp_ports;
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+};
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+
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+static inline struct net *nsim_dev_net(struct nsim_dev *nsim_dev)
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 {
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-	return 0;
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+	return devlink_net(priv_to_devlink(nsim_dev));
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 }
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-static inline void nsim_devlink_teardown(struct netdevsim *ns)
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-{
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-}
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+int nsim_dev_init(void);
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+void nsim_dev_exit(void);
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+int nsim_dev_probe(struct nsim_bus_dev *nsim_bus_dev);
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+void nsim_dev_remove(struct nsim_bus_dev *nsim_bus_dev);
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+int nsim_dev_port_add(struct nsim_bus_dev *nsim_bus_dev,
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+		      unsigned int port_index);
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+int nsim_dev_port_del(struct nsim_bus_dev *nsim_bus_dev,
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+		      unsigned int port_index);
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-static inline int nsim_devlink_init(void)
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-{
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-	return 0;
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-}
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-
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-static inline void nsim_devlink_exit(void)
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-{
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-}
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-#endif
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+struct nsim_fib_data *nsim_fib_create(struct devlink *devlink,
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+				      struct netlink_ext_ack *extack);
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+void nsim_fib_destroy(struct devlink *devlink, struct nsim_fib_data *fib_data);
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+u64 nsim_fib_get_val(struct nsim_fib_data *fib_data,
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+		     enum nsim_resource_id res_id, bool max);
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 #if IS_ENABLED(CONFIG_XFRM_OFFLOAD)
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 void nsim_ipsec_init(struct netdevsim *ns);
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@@ -199,7 +262,32 @@
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 }
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 #endif
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-static inline struct netdevsim *to_nsim(struct device *ptr)
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-{
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-	return container_of(ptr, struct netdevsim, dev);
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-}
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+struct nsim_vf_config {
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+	int link_state;
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+	u16 min_tx_rate;
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+	u16 max_tx_rate;
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+	u16 vlan;
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+	__be16 vlan_proto;
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+	u16 qos;
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+	u8 vf_mac[ETH_ALEN];
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+	bool spoofchk_enabled;
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+	bool trusted;
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+	bool rss_query_enabled;
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+};
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+
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+struct nsim_bus_dev {
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+	struct device dev;
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+	struct list_head list;
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+	unsigned int port_count;
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+	struct net *initial_net; /* Purpose of this is to carry net pointer
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+				  * during the probe time only.
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+				  */
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+	unsigned int num_vfs;
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+	struct nsim_vf_config *vfconfigs;
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+	/* Lock for devlink->reload_enabled in netdevsim module */
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+	struct mutex nsim_bus_reload_lock;
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+	bool init;
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+};
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+
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+int nsim_bus_init(void);
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+void nsim_bus_exit(void);