Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 36684996 authored by Scott Mayhew's avatar Scott Mayhew Committed by J. Bruce Fields
Browse files

nfsd: Register callbacks on the inetaddr_chain and inet6addr_chain 



Register callbacks on inetaddr_chain and inet6addr_chain to trigger
cleanup of nfsd transport sockets when an ip address is deleted.

Signed-off-by: default avatarScott Mayhew <smayhew@redhat.com>
Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
parent c3d4879e

fs/nfsd/nfssvc.c

+68 −0
Original line number Diff line number Diff line
@@ -14,9 +14,13 @@ 


#include <linux/sunrpc/stats.h>

#include <linux/sunrpc/svcsock.h>

#include <linux/sunrpc/svc_xprt.h>

#include <linux/lockd/bind.h>

#include <linux/nfsacl.h>

#include <linux/seq_file.h>

#include <linux/inetdevice.h>

#include <net/addrconf.h>

#include <net/ipv6.h>

#include <net/net_namespace.h>

#include "nfsd.h"

#include "cache.h"
@@ -306,10 +310,70 @@ static void nfsd_shutdown_net(struct net *net) 
	nfsd_shutdown_generic();

}



static int nfsd_inetaddr_event(struct notifier_block *this, unsigned long event,

	void *ptr)

{

	struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;

	struct net_device *dev = ifa->ifa_dev->dev;

	struct net *net = dev_net(dev);

	struct nfsd_net *nn = net_generic(net, nfsd_net_id);

	struct sockaddr_in sin;



	if (event != NETDEV_DOWN)

		goto out;



	if (nn->nfsd_serv) {

		dprintk("nfsd_inetaddr_event: removed %pI4\n", &ifa->ifa_local);

		sin.sin_family = AF_INET;

		sin.sin_addr.s_addr = ifa->ifa_local;

		svc_age_temp_xprts_now(nn->nfsd_serv, (struct sockaddr *)&sin);

	}



out:

	return NOTIFY_DONE;

}



static struct notifier_block nfsd_inetaddr_notifier = {

	.notifier_call = nfsd_inetaddr_event,

};



#if IS_ENABLED(CONFIG_IPV6)

static int nfsd_inet6addr_event(struct notifier_block *this,

	unsigned long event, void *ptr)

{

	struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;

	struct net_device *dev = ifa->idev->dev;

	struct net *net = dev_net(dev);

	struct nfsd_net *nn = net_generic(net, nfsd_net_id);

	struct sockaddr_in6 sin6;



	if (event != NETDEV_DOWN)

		goto out;



	if (nn->nfsd_serv) {

		dprintk("nfsd_inet6addr_event: removed %pI6\n", &ifa->addr);

		sin6.sin6_family = AF_INET6;

		sin6.sin6_addr = ifa->addr;

		svc_age_temp_xprts_now(nn->nfsd_serv, (struct sockaddr *)&sin6);

	}



out:

	return NOTIFY_DONE;

}



static struct notifier_block nfsd_inet6addr_notifier = {

	.notifier_call = nfsd_inet6addr_event,

};

#endif



static void nfsd_last_thread(struct svc_serv *serv, struct net *net)

{

	struct nfsd_net *nn = net_generic(net, nfsd_net_id);



	unregister_inetaddr_notifier(&nfsd_inetaddr_notifier);

#if IS_ENABLED(CONFIG_IPV6)

	unregister_inet6addr_notifier(&nfsd_inet6addr_notifier);

#endif

	/*

	 * write_ports can create the server without actually starting

	 * any threads--if we get shut down before any threads are
@@ -425,6 +489,10 @@ int nfsd_create_serv(struct net *net) 
	}



	set_max_drc();

	register_inetaddr_notifier(&nfsd_inetaddr_notifier);

#if IS_ENABLED(CONFIG_IPV6)

	register_inet6addr_notifier(&nfsd_inet6addr_notifier);

#endif

	do_gettimeofday(&nn->nfssvc_boot);		/* record boot time */

	return 0;

}