[PATCH net-next v6] ipmr: ip6mr: Create new sockopt to clear mfc cache or vifs

From: Callum Sinclair
Date: Sun Feb 17 2019 - 16:08:09 EST


Created a way to clear the multicast forwarding cache on a socket
without having to either remove the entries manually using the delete
entry socket option or destroy and recreate the multicast socket.

Calling the socket option MRT_FLUSH will allow any combination of the
four flag options to be cleared.

MRT_FLUSH_MFC will clear all non static mfc entries and clear the unresolved cache
MRT_FLUSH_MFC_STATIC will clear all static mfc entries
MRT_FLUSH_VIFS will clear all non static interfaces
MRT_FLUSH_VIFS_STATIC will clear all static interfaces.

Callum Sinclair (1):
ipmr: ip6mr: Create new sockopt to clear mfc cache or vifs

include/uapi/linux/mroute.h | 9 ++++-
include/uapi/linux/mroute6.h | 9 ++++-
net/ipv4/ipmr.c | 75 +++++++++++++++++++++-------------
net/ipv6/ip6mr.c | 78 +++++++++++++++++++++++-------------
4 files changed, 115 insertions(+), 56 deletions(-)

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2.20.1