1 /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
2 /* Copyright (C) 2017-2018 Netronome Systems, Inc. */
7 #include <net/devlink.h>
9 #include <trace/events/devlink.h>
11 #include "nfp_net_repr.h"
13 #define NFP_APP_CTRL_MTU_MAX U32_MAX
18 struct netlink_ext_ack;
29 NFP_APP_CORE_NIC = 0x1,
30 NFP_APP_BPF_NIC = 0x2,
31 NFP_APP_FLOWER_NIC = 0x3,
32 NFP_APP_ACTIVE_BUFFER_MGMT_NIC = 0x4,
35 extern const struct nfp_app_type app_nic;
36 extern const struct nfp_app_type app_bpf;
37 extern const struct nfp_app_type app_flower;
38 extern const struct nfp_app_type app_abm;
41 * struct nfp_app_type - application definition
43 * @name: application name
44 * @ctrl_cap_mask: ctrl vNIC capability mask, allows disabling features like
45 * IRQMOD which are on by default but counter-productive for
46 * control messages which are often latency-sensitive
47 * @ctrl_has_meta: control messages have prepend of type:5/port:CTRL
50 * @init: perform basic app checks and init
51 * @clean: clean app state
52 * @extra_cap: extra capabilities string
53 * @ndo_init: vNIC and repr netdev .ndo_init
54 * @ndo_uninit: vNIC and repr netdev .ndo_unint
55 * @vnic_alloc: allocate vNICs (assign port types, etc.)
56 * @vnic_free: free up app's vNIC state
57 * @vnic_init: vNIC netdev was registered
58 * @vnic_clean: vNIC netdev about to be unregistered
59 * @repr_init: representor about to be registered
60 * @repr_preclean: representor about to unregistered, executed before app
61 * reference to the it is removed
62 * @repr_clean: representor about to be unregistered
63 * @repr_open: representor netdev open callback
64 * @repr_stop: representor netdev stop callback
65 * @check_mtu: MTU change request on a netdev (verify it is valid)
66 * @repr_change_mtu: MTU change request on repr (make and verify change)
67 * @port_get_stats: get extra ethtool statistics for a port
68 * @port_get_stats_count: get count of extra statistics for a port
69 * @port_get_stats_strings: get strings for extra statistics
70 * @start: start application logic
71 * @stop: stop application logic
72 * @netdev_event: Netdevice notifier event
73 * @ctrl_msg_rx: control message handler
74 * @ctrl_msg_rx_raw: handler for control messages from data queues
75 * @setup_tc: setup TC ndo
76 * @bpf: BPF ndo offload-related calls
77 * @xdp_offload: offload an XDP program
78 * @eswitch_mode_get: get SR-IOV eswitch mode
79 * @eswitch_mode_set: set SR-IOV eswitch mode (under pf->lock)
80 * @sriov_enable: app-specific sriov initialisation
81 * @sriov_disable: app-specific sriov clean-up
82 * @repr_get: get representor netdev
91 int (*init)(struct nfp_app *app);
92 void (*clean)(struct nfp_app *app);
94 const char *(*extra_cap)(struct nfp_app *app, struct nfp_net *nn);
96 int (*ndo_init)(struct nfp_app *app, struct net_device *netdev);
97 void (*ndo_uninit)(struct nfp_app *app, struct net_device *netdev);
99 int (*vnic_alloc)(struct nfp_app *app, struct nfp_net *nn,
101 void (*vnic_free)(struct nfp_app *app, struct nfp_net *nn);
102 int (*vnic_init)(struct nfp_app *app, struct nfp_net *nn);
103 void (*vnic_clean)(struct nfp_app *app, struct nfp_net *nn);
105 int (*repr_init)(struct nfp_app *app, struct net_device *netdev);
106 void (*repr_preclean)(struct nfp_app *app, struct net_device *netdev);
107 void (*repr_clean)(struct nfp_app *app, struct net_device *netdev);
109 int (*repr_open)(struct nfp_app *app, struct nfp_repr *repr);
110 int (*repr_stop)(struct nfp_app *app, struct nfp_repr *repr);
112 int (*check_mtu)(struct nfp_app *app, struct net_device *netdev,
114 int (*repr_change_mtu)(struct nfp_app *app, struct net_device *netdev,
117 u64 *(*port_get_stats)(struct nfp_app *app,
118 struct nfp_port *port, u64 *data);
119 int (*port_get_stats_count)(struct nfp_app *app, struct nfp_port *port);
120 u8 *(*port_get_stats_strings)(struct nfp_app *app,
121 struct nfp_port *port, u8 *data);
123 int (*start)(struct nfp_app *app);
124 void (*stop)(struct nfp_app *app);
126 int (*netdev_event)(struct nfp_app *app, struct net_device *netdev,
127 unsigned long event, void *ptr);
129 void (*ctrl_msg_rx)(struct nfp_app *app, struct sk_buff *skb);
130 void (*ctrl_msg_rx_raw)(struct nfp_app *app, const void *data,
133 int (*setup_tc)(struct nfp_app *app, struct net_device *netdev,
134 enum tc_setup_type type, void *type_data);
135 int (*bpf)(struct nfp_app *app, struct nfp_net *nn,
136 struct netdev_bpf *xdp);
137 int (*xdp_offload)(struct nfp_app *app, struct nfp_net *nn,
138 struct bpf_prog *prog,
139 struct netlink_ext_ack *extack);
141 int (*sriov_enable)(struct nfp_app *app, int num_vfs);
142 void (*sriov_disable)(struct nfp_app *app);
144 enum devlink_eswitch_mode (*eswitch_mode_get)(struct nfp_app *app);
145 int (*eswitch_mode_set)(struct nfp_app *app, u16 mode);
146 struct net_device *(*repr_get)(struct nfp_app *app, u32 id);
150 * struct nfp_app - NFP application container
151 * @pdev: backpointer to PCI device
152 * @pf: backpointer to NFP PF structure
153 * @cpp: pointer to the CPP handle
154 * @ctrl: pointer to ctrl vNIC struct
155 * @reprs: array of pointers to representors
156 * @type: pointer to const application ops and info
157 * @ctrl_mtu: MTU to set on the control vNIC (set in .init())
158 * @netdev_nb: Netdevice notifier block
159 * @priv: app-specific priv data
162 struct pci_dev *pdev;
166 struct nfp_net *ctrl;
167 struct nfp_reprs __rcu *reprs[NFP_REPR_TYPE_MAX + 1];
169 const struct nfp_app_type *type;
170 unsigned int ctrl_mtu;
172 struct notifier_block netdev_nb;
177 void nfp_check_rhashtable_empty(void *ptr, void *arg);
178 bool __nfp_ctrl_tx(struct nfp_net *nn, struct sk_buff *skb);
179 bool nfp_ctrl_tx(struct nfp_net *nn, struct sk_buff *skb);
181 static inline int nfp_app_init(struct nfp_app *app)
183 if (!app->type->init)
185 return app->type->init(app);
188 static inline void nfp_app_clean(struct nfp_app *app)
190 if (app->type->clean)
191 app->type->clean(app);
194 int nfp_app_ndo_init(struct net_device *netdev);
195 void nfp_app_ndo_uninit(struct net_device *netdev);
197 static inline int nfp_app_vnic_alloc(struct nfp_app *app, struct nfp_net *nn,
200 return app->type->vnic_alloc(app, nn, id);
203 static inline void nfp_app_vnic_free(struct nfp_app *app, struct nfp_net *nn)
205 if (app->type->vnic_free)
206 app->type->vnic_free(app, nn);
209 static inline int nfp_app_vnic_init(struct nfp_app *app, struct nfp_net *nn)
211 if (!app->type->vnic_init)
213 return app->type->vnic_init(app, nn);
216 static inline void nfp_app_vnic_clean(struct nfp_app *app, struct nfp_net *nn)
218 if (app->type->vnic_clean)
219 app->type->vnic_clean(app, nn);
222 static inline int nfp_app_repr_open(struct nfp_app *app, struct nfp_repr *repr)
224 if (!app->type->repr_open)
226 return app->type->repr_open(app, repr);
229 static inline int nfp_app_repr_stop(struct nfp_app *app, struct nfp_repr *repr)
231 if (!app->type->repr_stop)
233 return app->type->repr_stop(app, repr);
237 nfp_app_repr_init(struct nfp_app *app, struct net_device *netdev)
239 if (!app->type->repr_init)
241 return app->type->repr_init(app, netdev);
245 nfp_app_repr_preclean(struct nfp_app *app, struct net_device *netdev)
247 if (app->type->repr_preclean)
248 app->type->repr_preclean(app, netdev);
252 nfp_app_repr_clean(struct nfp_app *app, struct net_device *netdev)
254 if (app->type->repr_clean)
255 app->type->repr_clean(app, netdev);
259 nfp_app_check_mtu(struct nfp_app *app, struct net_device *netdev, int new_mtu)
261 if (!app || !app->type->check_mtu)
263 return app->type->check_mtu(app, netdev, new_mtu);
267 nfp_app_repr_change_mtu(struct nfp_app *app, struct net_device *netdev,
270 if (!app || !app->type->repr_change_mtu)
272 return app->type->repr_change_mtu(app, netdev, new_mtu);
275 static inline const char *nfp_app_name(struct nfp_app *app)
279 return app->type->name;
282 static inline bool nfp_app_needs_ctrl_vnic(struct nfp_app *app)
284 return app && app->type->ctrl_msg_rx;
287 static inline bool nfp_app_ctrl_has_meta(struct nfp_app *app)
289 return app->type->ctrl_has_meta;
292 static inline bool nfp_app_ctrl_uses_data_vnics(struct nfp_app *app)
294 return app && app->type->ctrl_msg_rx_raw;
297 static inline const char *nfp_app_extra_cap(struct nfp_app *app,
300 if (!app || !app->type->extra_cap)
302 return app->type->extra_cap(app, nn);
305 static inline bool nfp_app_has_tc(struct nfp_app *app)
307 return app && app->type->setup_tc;
310 static inline int nfp_app_setup_tc(struct nfp_app *app,
311 struct net_device *netdev,
312 enum tc_setup_type type, void *type_data)
314 if (!app || !app->type->setup_tc)
316 return app->type->setup_tc(app, netdev, type, type_data);
319 static inline int nfp_app_bpf(struct nfp_app *app, struct nfp_net *nn,
320 struct netdev_bpf *bpf)
322 if (!app || !app->type->bpf)
324 return app->type->bpf(app, nn, bpf);
327 static inline int nfp_app_xdp_offload(struct nfp_app *app, struct nfp_net *nn,
328 struct bpf_prog *prog,
329 struct netlink_ext_ack *extack)
331 if (!app || !app->type->xdp_offload)
333 return app->type->xdp_offload(app, nn, prog, extack);
336 static inline bool __nfp_app_ctrl_tx(struct nfp_app *app, struct sk_buff *skb)
338 trace_devlink_hwmsg(priv_to_devlink(app->pf), false, 0,
339 skb->data, skb->len);
341 return __nfp_ctrl_tx(app->ctrl, skb);
344 static inline bool nfp_app_ctrl_tx(struct nfp_app *app, struct sk_buff *skb)
346 trace_devlink_hwmsg(priv_to_devlink(app->pf), false, 0,
347 skb->data, skb->len);
349 return nfp_ctrl_tx(app->ctrl, skb);
352 static inline void nfp_app_ctrl_rx(struct nfp_app *app, struct sk_buff *skb)
354 trace_devlink_hwmsg(priv_to_devlink(app->pf), true, 0,
355 skb->data, skb->len);
357 app->type->ctrl_msg_rx(app, skb);
361 nfp_app_ctrl_rx_raw(struct nfp_app *app, const void *data, unsigned int len)
363 if (!app || !app->type->ctrl_msg_rx_raw)
366 trace_devlink_hwmsg(priv_to_devlink(app->pf), true, 0, data, len);
367 app->type->ctrl_msg_rx_raw(app, data, len);
370 static inline int nfp_app_eswitch_mode_get(struct nfp_app *app, u16 *mode)
372 if (!app->type->eswitch_mode_get)
375 *mode = app->type->eswitch_mode_get(app);
380 static inline int nfp_app_eswitch_mode_set(struct nfp_app *app, u16 mode)
382 if (!app->type->eswitch_mode_set)
384 return app->type->eswitch_mode_set(app, mode);
387 static inline int nfp_app_sriov_enable(struct nfp_app *app, int num_vfs)
389 if (!app || !app->type->sriov_enable)
391 return app->type->sriov_enable(app, num_vfs);
394 static inline void nfp_app_sriov_disable(struct nfp_app *app)
396 if (app && app->type->sriov_disable)
397 app->type->sriov_disable(app);
400 static inline struct net_device *nfp_app_repr_get(struct nfp_app *app, u32 id)
402 if (unlikely(!app || !app->type->repr_get))
405 return app->type->repr_get(app, id);
408 struct nfp_app *nfp_app_from_netdev(struct net_device *netdev);
410 u64 *nfp_app_port_get_stats(struct nfp_port *port, u64 *data);
411 int nfp_app_port_get_stats_count(struct nfp_port *port);
412 u8 *nfp_app_port_get_stats_strings(struct nfp_port *port, u8 *data);
415 nfp_reprs_get_locked(struct nfp_app *app, enum nfp_repr_type type);
417 nfp_app_reprs_set(struct nfp_app *app, enum nfp_repr_type type,
418 struct nfp_reprs *reprs);
420 const char *nfp_app_mip_name(struct nfp_app *app);
422 nfp_app_ctrl_msg_alloc(struct nfp_app *app, unsigned int size, gfp_t priority);
424 struct nfp_app *nfp_app_alloc(struct nfp_pf *pf, enum nfp_app_id id);
425 void nfp_app_free(struct nfp_app *app);
426 int nfp_app_start(struct nfp_app *app, struct nfp_net *ctrl);
427 void nfp_app_stop(struct nfp_app *app);
429 /* Callbacks shared between apps */
431 int nfp_app_nic_vnic_alloc(struct nfp_app *app, struct nfp_net *nn,
433 int nfp_app_nic_vnic_init_phy_port(struct nfp_pf *pf, struct nfp_app *app,
434 struct nfp_net *nn, unsigned int id);
436 struct devlink *nfp_devlink_get_devlink(struct net_device *netdev);