c496291c5a
We currently only have one app callback for vNIC creation and destruction. This is insufficient, because some actions have to be taken before netdev is registered, after it's registered and after it's unregistered. Old callbacks were really corresponding to alloc/free actions. Rename them and add proper init/clean. Apps using representors will be able to use new callbacks to manage lifetime of upper devices. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
147 lines
3.5 KiB
C
147 lines
3.5 KiB
C
/*
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* Copyright (C) 2017 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/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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static const struct nfp_app_type *apps[] = {
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&app_nic,
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&app_bpf,
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#ifdef CONFIG_NFP_APP_FLOWER
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&app_flower,
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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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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_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 = rcu_dereference_protected(app->reprs[type],
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lockdep_is_held(&app->pf->lock));
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if (reprs && old) {
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old = ERR_PTR(-EBUSY);
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goto exit_unlock;
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}
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rcu_assign_pointer(app->reprs[type], reprs);
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exit_unlock:
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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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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(apps); i++)
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if (apps[i]->id == id)
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break;
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if (i == ARRAY_SIZE(apps)) {
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nfp_err(pf->cpp, "failed to find app with ID 0x%02hhx\n", id);
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return ERR_PTR(-EINVAL);
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}
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if (WARN_ON(!apps[i]->name || !apps[i]->vnic_alloc))
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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[i];
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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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