diff options
| author | Rémi Denis-Courmont <remi.denis-courmont@nokia.com> | 2009-09-09 00:00:05 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-09-11 12:55:06 -0700 |
| commit | f5bb1c558405aaac41b08b2ea71137db9db46e72 (patch) | |
| tree | deeabf046d4d18675bf85360a3059eb4f29f8d62 | |
| parent | 998ec759ef2fc9c60319815c72b2b699ab939733 (diff) | |
Phonet: back-end for autoconfigured addresses
In some cases, the network device driver knows what layer-3 address the
device should have. This adds support for the Phonet stack to
automatically request from the driver and add that address to the
network device.
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/linux/phonet.h | 17 | ||||
| -rw-r--r-- | net/phonet/pn_dev.c | 26 |
2 files changed, 42 insertions, 1 deletions
diff --git a/include/linux/phonet.h b/include/linux/phonet.h index ee5e3c9e2bc..82b45d16e50 100644 --- a/include/linux/phonet.h +++ b/include/linux/phonet.h @@ -170,4 +170,21 @@ static inline __u8 pn_sockaddr_get_resource(const struct sockaddr_pn *spn) return spn->spn_resource; } +/* Phonet device ioctl requests */ +#ifdef __KERNEL__ +#define SIOCPNGAUTOCONF (SIOCDEVPRIVATE + 0) + +struct if_phonet_autoconf { + uint8_t device; +}; + +struct if_phonet_req { + char ifr_phonet_name[16]; + union { + struct if_phonet_autoconf ifru_phonet_autoconf; + } ifr_ifru; +}; +#define ifr_phonet_autoconf ifr_ifru.ifru_phonet_autoconf +#endif /* __KERNEL__ */ + #endif diff --git a/net/phonet/pn_dev.c b/net/phonet/pn_dev.c index 5ae4c01e838..2f65dcaed2f 100644 --- a/net/phonet/pn_dev.c +++ b/net/phonet/pn_dev.c @@ -28,6 +28,7 @@ #include <linux/netdevice.h> #include <linux/phonet.h> #include <linux/proc_fs.h> +#include <linux/if_arp.h> #include <net/sock.h> #include <net/netns/generic.h> #include <net/phonet/pn_dev.h> @@ -195,14 +196,37 @@ found: return err; } +/* automatically configure a Phonet device, if supported */ +static int phonet_device_autoconf(struct net_device *dev) +{ + struct if_phonet_req req; + int ret; + + if (!dev->netdev_ops->ndo_do_ioctl) + return -EOPNOTSUPP; + + ret = dev->netdev_ops->ndo_do_ioctl(dev, (struct ifreq *)&req, + SIOCPNGAUTOCONF); + if (ret < 0) + return ret; + return phonet_address_add(dev, req.ifr_phonet_autoconf.device); +} + /* notify Phonet of device events */ static int phonet_device_notify(struct notifier_block *me, unsigned long what, void *arg) { struct net_device *dev = arg; - if (what == NETDEV_UNREGISTER) + switch (what) { + case NETDEV_REGISTER: + if (dev->type == ARPHRD_PHONET) + phonet_device_autoconf(dev); + break; + case NETDEV_UNREGISTER: phonet_device_destroy(dev); + break; + } return 0; } |