diff options
Diffstat (limited to 'drivers/net/ethernet/netronome/nfp/nfp_app.h')
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/nfp_app.h | 450 |
1 files changed, 450 insertions, 0 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_app.h b/drivers/net/ethernet/netronome/nfp/nfp_app.h new file mode 100644 index 000000000..dd56207df --- /dev/null +++ b/drivers/net/ethernet/netronome/nfp/nfp_app.h @@ -0,0 +1,450 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ +/* Copyright (C) 2017-2018 Netronome Systems, Inc. */ + +#ifndef _NFP_APP_H +#define _NFP_APP_H 1 + +#include <net/devlink.h> + +#include <trace/events/devlink.h> + +#include "nfp_net_repr.h" + +#define NFP_APP_CTRL_MTU_MAX U32_MAX + +struct bpf_prog; +struct net_device; +struct netdev_bpf; +struct netlink_ext_ack; +struct pci_dev; +struct sk_buff; +struct nfp_app; +struct nfp_cpp; +struct nfp_pf; +struct nfp_repr; +struct nfp_net; + +enum nfp_app_id { + NFP_APP_CORE_NIC = 0x1, + NFP_APP_BPF_NIC = 0x2, + NFP_APP_FLOWER_NIC = 0x3, + NFP_APP_ACTIVE_BUFFER_MGMT_NIC = 0x4, +}; + +extern const struct nfp_app_type app_nic; +extern const struct nfp_app_type app_bpf; +extern const struct nfp_app_type app_flower; +extern const struct nfp_app_type app_abm; + +/** + * struct nfp_app_type - application definition + * @id: application ID + * @name: application name + * @ctrl_cap_mask: ctrl vNIC capability mask, allows disabling features like + * IRQMOD which are on by default but counter-productive for + * control messages which are often latency-sensitive + * @ctrl_has_meta: control messages have prepend of type:5/port:CTRL + * + * Callbacks + * @init: perform basic app checks and init + * @clean: clean app state + * @extra_cap: extra capabilities string + * @ndo_init: vNIC and repr netdev .ndo_init + * @ndo_uninit: vNIC and repr netdev .ndo_unint + * @vnic_alloc: allocate vNICs (assign port types, etc.) + * @vnic_free: free up app's vNIC state + * @vnic_init: vNIC netdev was registered + * @vnic_clean: vNIC netdev about to be unregistered + * @repr_init: representor about to be registered + * @repr_preclean: representor about to unregistered, executed before app + * reference to the it is removed + * @repr_clean: representor about to be unregistered + * @repr_open: representor netdev open callback + * @repr_stop: representor netdev stop callback + * @check_mtu: MTU change request on a netdev (verify it is valid) + * @repr_change_mtu: MTU change request on repr (make and verify change) + * @port_get_stats: get extra ethtool statistics for a port + * @port_get_stats_count: get count of extra statistics for a port + * @port_get_stats_strings: get strings for extra statistics + * @start: start application logic + * @stop: stop application logic + * @netdev_event: Netdevice notifier event + * @ctrl_msg_rx: control message handler + * @ctrl_msg_rx_raw: handler for control messages from data queues + * @setup_tc: setup TC ndo + * @bpf: BPF ndo offload-related calls + * @xdp_offload: offload an XDP program + * @eswitch_mode_get: get SR-IOV eswitch mode + * @eswitch_mode_set: set SR-IOV eswitch mode + * @sriov_enable: app-specific sriov initialisation + * @sriov_disable: app-specific sriov clean-up + * @dev_get: get representor or internal port representing netdev + */ +struct nfp_app_type { + enum nfp_app_id id; + const char *name; + + u32 ctrl_cap_mask; + bool ctrl_has_meta; + + int (*init)(struct nfp_app *app); + void (*clean)(struct nfp_app *app); + + const char *(*extra_cap)(struct nfp_app *app, struct nfp_net *nn); + + int (*ndo_init)(struct nfp_app *app, struct net_device *netdev); + void (*ndo_uninit)(struct nfp_app *app, struct net_device *netdev); + + int (*vnic_alloc)(struct nfp_app *app, struct nfp_net *nn, + unsigned int id); + void (*vnic_free)(struct nfp_app *app, struct nfp_net *nn); + int (*vnic_init)(struct nfp_app *app, struct nfp_net *nn); + void (*vnic_clean)(struct nfp_app *app, struct nfp_net *nn); + + int (*repr_init)(struct nfp_app *app, struct net_device *netdev); + void (*repr_preclean)(struct nfp_app *app, struct net_device *netdev); + void (*repr_clean)(struct nfp_app *app, struct net_device *netdev); + + int (*repr_open)(struct nfp_app *app, struct nfp_repr *repr); + int (*repr_stop)(struct nfp_app *app, struct nfp_repr *repr); + + int (*check_mtu)(struct nfp_app *app, struct net_device *netdev, + int new_mtu); + int (*repr_change_mtu)(struct nfp_app *app, struct net_device *netdev, + int new_mtu); + + u64 *(*port_get_stats)(struct nfp_app *app, + struct nfp_port *port, u64 *data); + int (*port_get_stats_count)(struct nfp_app *app, struct nfp_port *port); + u8 *(*port_get_stats_strings)(struct nfp_app *app, + struct nfp_port *port, u8 *data); + + int (*start)(struct nfp_app *app); + void (*stop)(struct nfp_app *app); + + int (*netdev_event)(struct nfp_app *app, struct net_device *netdev, + unsigned long event, void *ptr); + + void (*ctrl_msg_rx)(struct nfp_app *app, struct sk_buff *skb); + void (*ctrl_msg_rx_raw)(struct nfp_app *app, const void *data, + unsigned int len); + + int (*setup_tc)(struct nfp_app *app, struct net_device *netdev, + enum tc_setup_type type, void *type_data); + int (*bpf)(struct nfp_app *app, struct nfp_net *nn, + struct netdev_bpf *xdp); + int (*xdp_offload)(struct nfp_app *app, struct nfp_net *nn, + struct bpf_prog *prog, + struct netlink_ext_ack *extack); + + int (*sriov_enable)(struct nfp_app *app, int num_vfs); + void (*sriov_disable)(struct nfp_app *app); + + enum devlink_eswitch_mode (*eswitch_mode_get)(struct nfp_app *app); + int (*eswitch_mode_set)(struct nfp_app *app, u16 mode); + struct net_device *(*dev_get)(struct nfp_app *app, u32 id, + bool *redir_egress); +}; + +/** + * struct nfp_app - NFP application container + * @pdev: backpointer to PCI device + * @pf: backpointer to NFP PF structure + * @cpp: pointer to the CPP handle + * @ctrl: pointer to ctrl vNIC struct + * @reprs: array of pointers to representors + * @type: pointer to const application ops and info + * @ctrl_mtu: MTU to set on the control vNIC (set in .init()) + * @netdev_nb: Netdevice notifier block + * @priv: app-specific priv data + */ +struct nfp_app { + struct pci_dev *pdev; + struct nfp_pf *pf; + struct nfp_cpp *cpp; + + struct nfp_net *ctrl; + struct nfp_reprs __rcu *reprs[NFP_REPR_TYPE_MAX + 1]; + + const struct nfp_app_type *type; + unsigned int ctrl_mtu; + + struct notifier_block netdev_nb; + + void *priv; +}; + +static inline void assert_nfp_app_locked(struct nfp_app *app) +{ + devl_assert_locked(priv_to_devlink(app->pf)); +} + +static inline bool nfp_app_is_locked(struct nfp_app *app) +{ + return devl_lock_is_held(priv_to_devlink(app->pf)); +} + +void nfp_check_rhashtable_empty(void *ptr, void *arg); +bool __nfp_ctrl_tx(struct nfp_net *nn, struct sk_buff *skb); +bool nfp_ctrl_tx(struct nfp_net *nn, struct sk_buff *skb); + +static inline int nfp_app_init(struct nfp_app *app) +{ + if (!app->type->init) + return 0; + return app->type->init(app); +} + +static inline void nfp_app_clean(struct nfp_app *app) +{ + if (app->type->clean) + app->type->clean(app); +} + +int nfp_app_ndo_init(struct net_device *netdev); +void nfp_app_ndo_uninit(struct net_device *netdev); + +static inline int nfp_app_vnic_alloc(struct nfp_app *app, struct nfp_net *nn, + unsigned int id) +{ + return app->type->vnic_alloc(app, nn, id); +} + +static inline void nfp_app_vnic_free(struct nfp_app *app, struct nfp_net *nn) +{ + if (app->type->vnic_free) + app->type->vnic_free(app, nn); +} + +static inline int nfp_app_vnic_init(struct nfp_app *app, struct nfp_net *nn) +{ + if (!app->type->vnic_init) + return 0; + return app->type->vnic_init(app, nn); +} + +static inline void nfp_app_vnic_clean(struct nfp_app *app, struct nfp_net *nn) +{ + if (app->type->vnic_clean) + app->type->vnic_clean(app, nn); +} + +static inline int nfp_app_repr_open(struct nfp_app *app, struct nfp_repr *repr) +{ + if (!app->type->repr_open) + return -EINVAL; + return app->type->repr_open(app, repr); +} + +static inline int nfp_app_repr_stop(struct nfp_app *app, struct nfp_repr *repr) +{ + if (!app->type->repr_stop) + return -EINVAL; + return app->type->repr_stop(app, repr); +} + +static inline int +nfp_app_repr_init(struct nfp_app *app, struct net_device *netdev) +{ + if (!app->type->repr_init) + return 0; + return app->type->repr_init(app, netdev); +} + +static inline void +nfp_app_repr_preclean(struct nfp_app *app, struct net_device *netdev) +{ + if (app->type->repr_preclean) + app->type->repr_preclean(app, netdev); +} + +static inline void +nfp_app_repr_clean(struct nfp_app *app, struct net_device *netdev) +{ + if (app->type->repr_clean) + app->type->repr_clean(app, netdev); +} + +static inline int +nfp_app_check_mtu(struct nfp_app *app, struct net_device *netdev, int new_mtu) +{ + if (!app || !app->type->check_mtu) + return 0; + return app->type->check_mtu(app, netdev, new_mtu); +} + +static inline int +nfp_app_repr_change_mtu(struct nfp_app *app, struct net_device *netdev, + int new_mtu) +{ + if (!app || !app->type->repr_change_mtu) + return 0; + return app->type->repr_change_mtu(app, netdev, new_mtu); +} + +static inline const char *nfp_app_name(struct nfp_app *app) +{ + if (!app) + return ""; + return app->type->name; +} + +static inline bool nfp_app_needs_ctrl_vnic(struct nfp_app *app) +{ + return app && app->type->ctrl_msg_rx; +} + +static inline bool nfp_app_ctrl_has_meta(struct nfp_app *app) +{ + return app->type->ctrl_has_meta; +} + +static inline bool nfp_app_ctrl_uses_data_vnics(struct nfp_app *app) +{ + return app && app->type->ctrl_msg_rx_raw; +} + +static inline const char *nfp_app_extra_cap(struct nfp_app *app, + struct nfp_net *nn) +{ + if (!app || !app->type->extra_cap) + return ""; + return app->type->extra_cap(app, nn); +} + +static inline bool nfp_app_has_tc(struct nfp_app *app) +{ + return app && app->type->setup_tc; +} + +static inline int nfp_app_setup_tc(struct nfp_app *app, + struct net_device *netdev, + enum tc_setup_type type, void *type_data) +{ + if (!app || !app->type->setup_tc) + return -EOPNOTSUPP; + return app->type->setup_tc(app, netdev, type, type_data); +} + +static inline int nfp_app_bpf(struct nfp_app *app, struct nfp_net *nn, + struct netdev_bpf *bpf) +{ + if (!app || !app->type->bpf) + return -EINVAL; + return app->type->bpf(app, nn, bpf); +} + +static inline int nfp_app_xdp_offload(struct nfp_app *app, struct nfp_net *nn, + struct bpf_prog *prog, + struct netlink_ext_ack *extack) +{ + if (!app || !app->type->xdp_offload) + return -EOPNOTSUPP; + return app->type->xdp_offload(app, nn, prog, extack); +} + +static inline bool __nfp_app_ctrl_tx(struct nfp_app *app, struct sk_buff *skb) +{ + trace_devlink_hwmsg(priv_to_devlink(app->pf), false, 0, + skb->data, skb->len); + + return __nfp_ctrl_tx(app->ctrl, skb); +} + +static inline bool nfp_app_ctrl_tx(struct nfp_app *app, struct sk_buff *skb) +{ + trace_devlink_hwmsg(priv_to_devlink(app->pf), false, 0, + skb->data, skb->len); + + return nfp_ctrl_tx(app->ctrl, skb); +} + +static inline void nfp_app_ctrl_rx(struct nfp_app *app, struct sk_buff *skb) +{ + trace_devlink_hwmsg(priv_to_devlink(app->pf), true, 0, + skb->data, skb->len); + + app->type->ctrl_msg_rx(app, skb); +} + +static inline void +nfp_app_ctrl_rx_raw(struct nfp_app *app, const void *data, unsigned int len) +{ + if (!app || !app->type->ctrl_msg_rx_raw) + return; + + trace_devlink_hwmsg(priv_to_devlink(app->pf), true, 0, data, len); + app->type->ctrl_msg_rx_raw(app, data, len); +} + +static inline int nfp_app_eswitch_mode_get(struct nfp_app *app, u16 *mode) +{ + if (!app->type->eswitch_mode_get) + return -EOPNOTSUPP; + + *mode = app->type->eswitch_mode_get(app); + + return 0; +} + +static inline int nfp_app_eswitch_mode_set(struct nfp_app *app, u16 mode) +{ + if (!app->type->eswitch_mode_set) + return -EOPNOTSUPP; + return app->type->eswitch_mode_set(app, mode); +} + +static inline int nfp_app_sriov_enable(struct nfp_app *app, int num_vfs) +{ + if (!app || !app->type->sriov_enable) + return -EOPNOTSUPP; + return app->type->sriov_enable(app, num_vfs); +} + +static inline void nfp_app_sriov_disable(struct nfp_app *app) +{ + if (app && app->type->sriov_disable) + app->type->sriov_disable(app); +} + +static inline +struct net_device *nfp_app_dev_get(struct nfp_app *app, u32 id, + bool *redir_egress) +{ + if (unlikely(!app || !app->type->dev_get)) + return NULL; + + return app->type->dev_get(app, id, redir_egress); +} + +struct nfp_app *nfp_app_from_netdev(struct net_device *netdev); + +u64 *nfp_app_port_get_stats(struct nfp_port *port, u64 *data); +int nfp_app_port_get_stats_count(struct nfp_port *port); +u8 *nfp_app_port_get_stats_strings(struct nfp_port *port, u8 *data); + +struct nfp_reprs * +nfp_reprs_get_locked(struct nfp_app *app, enum nfp_repr_type type); +struct nfp_reprs * +nfp_app_reprs_set(struct nfp_app *app, enum nfp_repr_type type, + struct nfp_reprs *reprs); + +const char *nfp_app_mip_name(struct nfp_app *app); +struct sk_buff * +nfp_app_ctrl_msg_alloc(struct nfp_app *app, unsigned int size, gfp_t priority); + +struct nfp_app *nfp_app_alloc(struct nfp_pf *pf, enum nfp_app_id id); +void nfp_app_free(struct nfp_app *app); +int nfp_app_start(struct nfp_app *app, struct nfp_net *ctrl); +void nfp_app_stop(struct nfp_app *app); + +/* Callbacks shared between apps */ + +int nfp_app_nic_vnic_alloc(struct nfp_app *app, struct nfp_net *nn, + unsigned int id); +int nfp_app_nic_vnic_init_phy_port(struct nfp_pf *pf, struct nfp_app *app, + struct nfp_net *nn, unsigned int id); + +struct devlink_port *nfp_devlink_get_devlink_port(struct net_device *netdev); + +#endif |