1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2 /* Copyright (C) 2017-2018 Netronome Systems, Inc. */ 3 4 #include <linux/bug.h> 5 #include <linux/lockdep.h> 6 #include <linux/rcupdate.h> 7 #include <linux/skbuff.h> 8 #include <linux/slab.h> 9 10 #include "nfpcore/nfp_cpp.h" 11 #include "nfpcore/nfp_nffw.h" 12 #include "nfp_app.h" 13 #include "nfp_main.h" 14 #include "nfp_net.h" 15 #include "nfp_net_repr.h" 16 #include "nfp_port.h" 17 18 static const struct nfp_app_type *apps[] = { 19 [NFP_APP_CORE_NIC] = &app_nic, 20 #ifdef CONFIG_BPF_SYSCALL 21 [NFP_APP_BPF_NIC] = &app_bpf, 22 #else 23 [NFP_APP_BPF_NIC] = &app_nic, 24 #endif 25 #ifdef CONFIG_NFP_APP_FLOWER 26 [NFP_APP_FLOWER_NIC] = &app_flower, 27 #endif 28 #ifdef CONFIG_NFP_APP_ABM_NIC 29 [NFP_APP_ACTIVE_BUFFER_MGMT_NIC] = &app_abm, 30 #endif 31 }; 32 33 void nfp_check_rhashtable_empty(void *ptr, void *arg) 34 { 35 WARN_ON_ONCE(1); 36 } 37 38 struct nfp_app *nfp_app_from_netdev(struct net_device *netdev) 39 { 40 if (nfp_netdev_is_nfp_net(netdev)) { 41 struct nfp_net *nn = netdev_priv(netdev); 42 43 return nn->app; 44 } 45 46 if (nfp_netdev_is_nfp_repr(netdev)) { 47 struct nfp_repr *repr = netdev_priv(netdev); 48 49 return repr->app; 50 } 51 52 WARN(1, "Unknown netdev type for nfp_app\n"); 53 54 return NULL; 55 } 56 57 const char *nfp_app_mip_name(struct nfp_app *app) 58 { 59 if (!app || !app->pf->mip) 60 return ""; 61 return nfp_mip_name(app->pf->mip); 62 } 63 64 int nfp_app_ndo_init(struct net_device *netdev) 65 { 66 struct nfp_app *app = nfp_app_from_netdev(netdev); 67 68 if (!app || !app->type->ndo_init) 69 return 0; 70 return app->type->ndo_init(app, netdev); 71 } 72 73 void nfp_app_ndo_uninit(struct net_device *netdev) 74 { 75 struct nfp_app *app = nfp_app_from_netdev(netdev); 76 77 if (app && app->type->ndo_uninit) 78 app->type->ndo_uninit(app, netdev); 79 } 80 81 u64 *nfp_app_port_get_stats(struct nfp_port *port, u64 *data) 82 { 83 if (!port || !port->app || !port->app->type->port_get_stats) 84 return data; 85 return port->app->type->port_get_stats(port->app, port, data); 86 } 87 88 int nfp_app_port_get_stats_count(struct nfp_port *port) 89 { 90 if (!port || !port->app || !port->app->type->port_get_stats_count) 91 return 0; 92 return port->app->type->port_get_stats_count(port->app, port); 93 } 94 95 u8 *nfp_app_port_get_stats_strings(struct nfp_port *port, u8 *data) 96 { 97 if (!port || !port->app || !port->app->type->port_get_stats_strings) 98 return data; 99 return port->app->type->port_get_stats_strings(port->app, port, data); 100 } 101 102 struct sk_buff * 103 nfp_app_ctrl_msg_alloc(struct nfp_app *app, unsigned int size, gfp_t priority) 104 { 105 struct sk_buff *skb; 106 107 if (nfp_app_ctrl_has_meta(app)) 108 size += 8; 109 110 skb = alloc_skb(size, priority); 111 if (!skb) 112 return NULL; 113 114 if (nfp_app_ctrl_has_meta(app)) 115 skb_reserve(skb, 8); 116 117 return skb; 118 } 119 120 struct nfp_reprs * 121 nfp_reprs_get_locked(struct nfp_app *app, enum nfp_repr_type type) 122 { 123 return rcu_dereference_protected(app->reprs[type], 124 lockdep_is_held(&app->pf->lock)); 125 } 126 127 struct nfp_reprs * 128 nfp_app_reprs_set(struct nfp_app *app, enum nfp_repr_type type, 129 struct nfp_reprs *reprs) 130 { 131 struct nfp_reprs *old; 132 133 old = nfp_reprs_get_locked(app, type); 134 rcu_assign_pointer(app->reprs[type], reprs); 135 136 return old; 137 } 138 139 struct nfp_app *nfp_app_alloc(struct nfp_pf *pf, enum nfp_app_id id) 140 { 141 struct nfp_app *app; 142 143 if (id >= ARRAY_SIZE(apps) || !apps[id]) { 144 nfp_err(pf->cpp, "unknown FW app ID 0x%02hhx, driver too old or support for FW not built in\n", id); 145 return ERR_PTR(-EINVAL); 146 } 147 148 if (WARN_ON(!apps[id]->name || !apps[id]->vnic_alloc)) 149 return ERR_PTR(-EINVAL); 150 if (WARN_ON(!apps[id]->ctrl_msg_rx && apps[id]->ctrl_msg_rx_raw)) 151 return ERR_PTR(-EINVAL); 152 153 app = kzalloc(sizeof(*app), GFP_KERNEL); 154 if (!app) 155 return ERR_PTR(-ENOMEM); 156 157 app->pf = pf; 158 app->cpp = pf->cpp; 159 app->pdev = pf->pdev; 160 app->type = apps[id]; 161 162 return app; 163 } 164 165 void nfp_app_free(struct nfp_app *app) 166 { 167 kfree(app); 168 } 169