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OpenCloudOS-Kernel
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nfp: register a notifier handler in a central location for the device 

Code interested in networking events registers its own notifier
handlers.  Create one device-wide notifier instance.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski 2018-11-06 17:07:33 -08:00 committed by David S. Miller
parent 659bb404eb
commit 3e33359040
2 changed files with 57 additions and 15 deletions
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47
drivers/net/ethernet/netronome/nfp/nfp_app.c
View File

@ -136,6 +136,53 @@ nfp_app_reprs_set(struct nfp_app *app, enum nfp_repr_type type,
return old;
}
static int
nfp_app_netdev_event(struct notifier_block *nb, unsigned long event, void *ptr)
{
struct net_device *netdev;
struct nfp_app *app;
netdev = netdev_notifier_info_to_dev(ptr);
app = container_of(nb, struct nfp_app, netdev_nb);
if (app->type->netdev_event)
return app->type->netdev_event(app, netdev, event, ptr);
return NOTIFY_DONE;
}
int nfp_app_start(struct nfp_app *app, struct nfp_net *ctrl)
{
int err;
app->ctrl = ctrl;
if (app->type->start) {
err = app->type->start(app);
if (err)
return err;
}
app->netdev_nb.notifier_call = nfp_app_netdev_event;
err = register_netdevice_notifier(&app->netdev_nb);
if (err)
goto err_app_stop;
return 0;
err_app_stop:
if (app->type->stop)
app->type->stop(app);
return err;
}
void nfp_app_stop(struct nfp_app *app)
{
unregister_netdevice_notifier(&app->netdev_nb);
if (app->type->stop)
app->type->stop(app);
}
struct nfp_app *nfp_app_alloc(struct nfp_pf *pf, enum nfp_app_id id)
{
struct nfp_app *app;

25
drivers/net/ethernet/netronome/nfp/nfp_app.h
View File

@ -69,6 +69,7 @@ extern const struct nfp_app_type app_abm;
* @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
@ -122,6 +123,9 @@ struct nfp_app_type {
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);
@ -151,6 +155,7 @@ struct nfp_app_type {
* @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 {
@ -163,6 +168,9 @@ struct nfp_app {
const struct nfp_app_type *type;
unsigned int ctrl_mtu;
struct notifier_block netdev_nb;
void *priv;
};
@ -264,21 +272,6 @@ nfp_app_repr_change_mtu(struct nfp_app *app, struct net_device *netdev,
return app->type->repr_change_mtu(app, netdev, new_mtu);
}
static inline int nfp_app_start(struct nfp_app *app, struct nfp_net *ctrl)
{
app->ctrl = ctrl;
if (!app->type->start)
return 0;
return app->type->start(app);
}
static inline void nfp_app_stop(struct nfp_app *app)
{
if (!app->type->stop)
return;
app->type->stop(app);
}
static inline const char *nfp_app_name(struct nfp_app *app)
{
if (!app)
@ -430,6 +423,8 @@ 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 */