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  • linux-arm
  • linux-de
  • Repository
  • linux-de
  • net
  • bridge
  • br_sysfs_if.c
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  • Roopa Prabhu's avatar
    bridge: add new BR_NEIGH_SUPPRESS port flag to suppress arp and nd flood · 821f1b21
    Roopa Prabhu authored Oct 06, 2017
    This patch adds a new bridge port flag BR_NEIGH_SUPPRESS to
    suppress arp and nd flood on bridge ports. It implements
    rfc7432, section 10.
    https://tools.ietf.org/html/rfc7432#section-10
    
    
    for ethernet VPN deployments. It is similar to the existing
    BR_PROXYARP* flags but has a few semantic differences to conform
    to EVPN standard. Unlike the existing flags, this new flag suppresses
    flood of all neigh discovery packets (arp and nd) to tunnel ports.
    Supports both vlan filtering and non-vlan filtering bridges.
    
    In case of EVPN, it is mainly used to avoid flooding
    of arp and nd packets to tunnel ports like vxlan.
    
    This patch adds netlink and sysfs support to set this bridge port
    flag.
    
    Signed-off-by: default avatarRoopa Prabhu <roopa@cumulusnetworks.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    821f1b21