diff options
Diffstat (limited to 'drivers/net/ethernet/netronome/nfp/nfp_app.c')
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/nfp_app.c | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_app.c b/drivers/net/ethernet/netronome/nfp/nfp_app.c new file mode 100644 index 000000000..8607d09ab --- /dev/null +++ b/drivers/net/ethernet/netronome/nfp/nfp_app.c @@ -0,0 +1,193 @@ +/* + * Copyright (C) 2017-2018 Netronome Systems, Inc. + * + * This software is dual licensed under the GNU General License Version 2, + * June 1991 as shown in the file COPYING in the top-level directory of this + * source tree or the BSD 2-Clause License provided below. You have the + * option to license this software under the complete terms of either license. + * + * The BSD 2-Clause License: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * 1. Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * 2. Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include <linux/bug.h> +#include <linux/lockdep.h> +#include <linux/rcupdate.h> +#include <linux/skbuff.h> +#include <linux/slab.h> + +#include "nfpcore/nfp_cpp.h" +#include "nfpcore/nfp_nffw.h" +#include "nfp_app.h" +#include "nfp_main.h" +#include "nfp_net.h" +#include "nfp_net_repr.h" +#include "nfp_port.h" + +static const struct nfp_app_type *apps[] = { + [NFP_APP_CORE_NIC] = &app_nic, +#ifdef CONFIG_BPF_SYSCALL + [NFP_APP_BPF_NIC] = &app_bpf, +#else + [NFP_APP_BPF_NIC] = &app_nic, +#endif +#ifdef CONFIG_NFP_APP_FLOWER + [NFP_APP_FLOWER_NIC] = &app_flower, +#endif +#ifdef CONFIG_NFP_APP_ABM_NIC + [NFP_APP_ACTIVE_BUFFER_MGMT_NIC] = &app_abm, +#endif +}; + +struct nfp_app *nfp_app_from_netdev(struct net_device *netdev) +{ + if (nfp_netdev_is_nfp_net(netdev)) { + struct nfp_net *nn = netdev_priv(netdev); + + return nn->app; + } + + if (nfp_netdev_is_nfp_repr(netdev)) { + struct nfp_repr *repr = netdev_priv(netdev); + + return repr->app; + } + + WARN(1, "Unknown netdev type for nfp_app\n"); + + return NULL; +} + +const char *nfp_app_mip_name(struct nfp_app *app) +{ + if (!app || !app->pf->mip) + return ""; + return nfp_mip_name(app->pf->mip); +} + +int nfp_app_ndo_init(struct net_device *netdev) +{ + struct nfp_app *app = nfp_app_from_netdev(netdev); + + if (!app || !app->type->ndo_init) + return 0; + return app->type->ndo_init(app, netdev); +} + +void nfp_app_ndo_uninit(struct net_device *netdev) +{ + struct nfp_app *app = nfp_app_from_netdev(netdev); + + if (app && app->type->ndo_uninit) + app->type->ndo_uninit(app, netdev); +} + +u64 *nfp_app_port_get_stats(struct nfp_port *port, u64 *data) +{ + if (!port || !port->app || !port->app->type->port_get_stats) + return data; + return port->app->type->port_get_stats(port->app, port, data); +} + +int nfp_app_port_get_stats_count(struct nfp_port *port) +{ + if (!port || !port->app || !port->app->type->port_get_stats_count) + return 0; + return port->app->type->port_get_stats_count(port->app, port); +} + +u8 *nfp_app_port_get_stats_strings(struct nfp_port *port, u8 *data) +{ + if (!port || !port->app || !port->app->type->port_get_stats_strings) + return data; + return port->app->type->port_get_stats_strings(port->app, port, data); +} + +struct sk_buff * +nfp_app_ctrl_msg_alloc(struct nfp_app *app, unsigned int size, gfp_t priority) +{ + struct sk_buff *skb; + + if (nfp_app_ctrl_has_meta(app)) + size += 8; + + skb = alloc_skb(size, priority); + if (!skb) + return NULL; + + if (nfp_app_ctrl_has_meta(app)) + skb_reserve(skb, 8); + + return skb; +} + +struct nfp_reprs * +nfp_reprs_get_locked(struct nfp_app *app, enum nfp_repr_type type) +{ + return rcu_dereference_protected(app->reprs[type], + lockdep_is_held(&app->pf->lock)); +} + +struct nfp_reprs * +nfp_app_reprs_set(struct nfp_app *app, enum nfp_repr_type type, + struct nfp_reprs *reprs) +{ + struct nfp_reprs *old; + + old = nfp_reprs_get_locked(app, type); + rcu_assign_pointer(app->reprs[type], reprs); + + return old; +} + +struct nfp_app *nfp_app_alloc(struct nfp_pf *pf, enum nfp_app_id id) +{ + struct nfp_app *app; + + if (id >= ARRAY_SIZE(apps) || !apps[id]) { + nfp_err(pf->cpp, "unknown FW app ID 0x%02hhx, driver too old or support for FW not built in\n", id); + return ERR_PTR(-EINVAL); + } + + if (WARN_ON(!apps[id]->name || !apps[id]->vnic_alloc)) + return ERR_PTR(-EINVAL); + if (WARN_ON(!apps[id]->ctrl_msg_rx && apps[id]->ctrl_msg_rx_raw)) + return ERR_PTR(-EINVAL); + + app = kzalloc(sizeof(*app), GFP_KERNEL); + if (!app) + return ERR_PTR(-ENOMEM); + + app->pf = pf; + app->cpp = pf->cpp; + app->pdev = pf->pdev; + app->type = apps[id]; + + return app; +} + +void nfp_app_free(struct nfp_app *app) +{ + kfree(app); +} |