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authorIlia K <mail4ilia@gmail.com>2009-09-16 05:53:07 +0000
committerDavid S. Miller <davem@davemloft.net>2009-10-07 00:48:41 -0700
commitee5e81f00051b5c373c8de16e3604fd6d3be699e (patch)
treef10ed0120d1669cf903752c3595fbb4b213795f5 /net/ipv6/Kconfig
parent7bb5fdc2fb021e32703ed1ff0269876bde1fa962 (diff)
downloadop-kernel-dev-ee5e81f00051b5c373c8de16e3604fd6d3be699e.zip
op-kernel-dev-ee5e81f00051b5c373c8de16e3604fd6d3be699e.tar.gz
add vif using local interface index instead of IP
When routing daemon wants to enable forwarding of multicast traffic it performs something like: struct vifctl vc = { .vifc_vifi = 1, .vifc_flags = 0, .vifc_threshold = 1, .vifc_rate_limit = 0, .vifc_lcl_addr = ip, /* <--- ip address of physical interface, e.g. eth0 */ .vifc_rmt_addr.s_addr = htonl(INADDR_ANY), }; setsockopt(fd, IPPROTO_IP, MRT_ADD_VIF, &vc, sizeof(vc)); This leads (in the kernel) to calling vif_add() function call which search the (physical) device using assigned IP address: dev = ip_dev_find(net, vifc->vifc_lcl_addr.s_addr); The current API (struct vifctl) does not allow to specify an interface other way than using it's IP, and if there are more than a single interface with specified IP only the first one will be found. The attached patch (against 2.6.30.4) allows to specify an interface by its index, instead of IP address: struct vifctl vc = { .vifc_vifi = 1, .vifc_flags = VIFF_USE_IFINDEX, /* NEW */ .vifc_threshold = 1, .vifc_rate_limit = 0, .vifc_lcl_ifindex = if_nametoindex("eth0"), /* NEW */ .vifc_rmt_addr.s_addr = htonl(INADDR_ANY), }; setsockopt(fd, IPPROTO_IP, MRT_ADD_VIF, &vc, sizeof(vc)); Signed-off-by: Ilia K. <mail4ilia@gmail.com> === modified file 'include/linux/mroute.h' Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/Kconfig')
0 files changed, 0 insertions, 0 deletions
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