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