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

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Message-Id: <20190217210752.20914-1-callum.sinclair@alliedtelesis.co.nz>
Date:   Mon, 18 Feb 2019 10:07:51 +1300
From:   Callum Sinclair <callum.sinclair@...iedtelesis.co.nz>
To:     davem@...emloft.net, kuznet@....inr.ac.ru, yoshfuji@...ux-ipv6.org,
        nikolay@...ulusnetworks.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     nicolas.dichtel@...nd.com,
        Callum Sinclair <callum.sinclair@...iedtelesis.co.nz>
Subject: [PATCH net-next v6] ipmr: ip6mr: Create new sockopt to clear mfc cache or vifs

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(-)

-- 
2.20.1