diff options
author | 2015-12-11 16:45:59 -0500 | |
---|---|---|
committer | 2015-12-23 10:08:15 -0500 | |
commit | 366849966f20a3d996a2160778861e348cc6a7c6 (patch) | |
tree | 8de8fe5e8a1a8e0249496b338d484ef572dc95b4 /fs/nfsd/nfssvc.c | |
parent | sunrpc: Add a function to close temporary transports immediately (diff) | |
download | linux-366849966f20a3d996a2160778861e348cc6a7c6.tar.gz linux-366849966f20a3d996a2160778861e348cc6a7c6.tar.bz2 linux-366849966f20a3d996a2160778861e348cc6a7c6.zip |
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: Scott Mayhew <smayhew@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd/nfssvc.c')
-rw-r--r-- | fs/nfsd/nfssvc.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c index ad4e2377dd63..3779a5fbeb42 100644 --- a/fs/nfsd/nfssvc.c +++ b/fs/nfsd/nfssvc.c @@ -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; } |