From dc1f6bff6a9d6733a07b9b97905bc824c055e8f4 Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Thu, 3 May 2007 03:28:49 -0700 Subject: [AFS]: Replace rtnetlink client by direct dev_base walking Replace the large and complicated rtnetlink client by two simple functions for getting the MAC address for the first ethernet device and building a list of IPv4 addresses. Signed-off-by: Patrick McHardy Signed-off-by: David Howells Signed-off-by: David S. Miller --- fs/afs/netdevices.c | 54 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 fs/afs/netdevices.c (limited to 'fs/afs/netdevices.c') diff --git a/fs/afs/netdevices.c b/fs/afs/netdevices.c new file mode 100644 index 00000000000..2b3087357fa --- /dev/null +++ b/fs/afs/netdevices.c @@ -0,0 +1,54 @@ +/* AFS network device helpers + * + * Copyright (c) 2007 Patrick McHardy + */ + +#include +#include +#include +#include +#include +#include "internal.h" + +int afs_get_MAC_address(u8 mac[ETH_ALEN]) +{ + struct net_device *dev; + int ret = -ENODEV; + + rtnl_lock(); + dev = __dev_getfirstbyhwtype(ARPHRD_ETHER); + if (dev) { + memcpy(mac, dev->dev_addr, ETH_ALEN); + ret = 0; + } + rtnl_unlock(); + return ret; +} + +int afs_get_ipv4_interfaces(struct afs_interface *bufs, size_t maxbufs, + bool wantloopback) +{ + struct net_device *dev; + struct in_device *idev; + int n = 0; + + rtnl_lock(); + for (dev = dev_base; dev; dev = dev->next) { + if (dev->type == ARPHRD_LOOPBACK && !wantloopback) + continue; + idev = __in_dev_get_rtnl(dev); + if (!idev) + continue; + for_primary_ifa(idev) { + if (n == maxbufs) + goto out; + bufs[n].address.s_addr = ifa->ifa_address; + bufs[n].netmask.s_addr = ifa->ifa_mask; + bufs[n].mtu = dev->mtu; + n++; + } endfor_ifa(idev) + } +out: + rtnl_unlock(); + return n; +} -- cgit v1.2.3