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Commit 1a371ea1 authored by Shannon Nelson's avatar Shannon Nelson Committed by David S. Miller
Browse files

ionic: Add netdev-event handling 



When the netdev gets a new name from userland, pass that name
down to the NIC for internal tracking.

Signed-off-by: default avatarShannon Nelson <snelson@pensando.io>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0f3154e6

drivers/net/ethernet/pensando/ionic/ionic.h

+2 −0
Original line number Diff line number Diff line
@@ -44,6 +44,8 @@ struct ionic { 
	DECLARE_BITMAP(lifbits, IONIC_LIFS_MAX);

	unsigned int nintrs;

	DECLARE_BITMAP(intrs, IONIC_INTR_CTRL_REGS_MAX);

	struct work_struct nb_work;

	struct notifier_block nb;

};



struct ionic_admin_ctx {

drivers/net/ethernet/pensando/ionic/ionic_lif.c

+62 −0
Original line number Diff line number Diff line
@@ -1955,10 +1955,66 @@ int ionic_lifs_init(struct ionic *ionic) 
	return 0;

}



static void ionic_lif_notify_work(struct work_struct *ws)

{

}



static void ionic_lif_set_netdev_info(struct ionic_lif *lif)

{

	struct ionic_admin_ctx ctx = {

		.work = COMPLETION_INITIALIZER_ONSTACK(ctx.work),

		.cmd.lif_setattr = {

			.opcode = IONIC_CMD_LIF_SETATTR,

			.index = cpu_to_le16(lif->index),

			.attr = IONIC_LIF_ATTR_NAME,

		},

	};



	strlcpy(ctx.cmd.lif_setattr.name, lif->netdev->name,

		sizeof(ctx.cmd.lif_setattr.name));



	ionic_adminq_post_wait(lif, &ctx);

}



static struct ionic_lif *ionic_netdev_lif(struct net_device *netdev)

{

	if (!netdev || netdev->netdev_ops->ndo_start_xmit != ionic_start_xmit)

		return NULL;



	return netdev_priv(netdev);

}



static int ionic_lif_notify(struct notifier_block *nb,

			    unsigned long event, void *info)

{

	struct net_device *ndev = netdev_notifier_info_to_dev(info);

	struct ionic *ionic = container_of(nb, struct ionic, nb);

	struct ionic_lif *lif = ionic_netdev_lif(ndev);



	if (!lif || lif->ionic != ionic)

		return NOTIFY_DONE;



	switch (event) {

	case NETDEV_CHANGENAME:

		ionic_lif_set_netdev_info(lif);

		break;

	}



	return NOTIFY_DONE;

}



int ionic_lifs_register(struct ionic *ionic)

{

	int err;



	INIT_WORK(&ionic->nb_work, ionic_lif_notify_work);



	ionic->nb.notifier_call = ionic_lif_notify;



	err = register_netdevice_notifier(&ionic->nb);

	if (err)

		ionic->nb.notifier_call = NULL;



	/* only register LIF0 for now */

	err = register_netdev(ionic->master_lif->netdev);

	if (err) {
@@ -1974,6 +2030,12 @@ int ionic_lifs_register(struct ionic *ionic) 


void ionic_lifs_unregister(struct ionic *ionic)

{

	if (ionic->nb.notifier_call) {

		unregister_netdevice_notifier(&ionic->nb);

		cancel_work_sync(&ionic->nb_work);

		ionic->nb.notifier_call = NULL;

	}



	/* There is only one lif ever registered in the

	 * current model, so don't bother searching the

	 * ionic->lif for candidates to unregister