• Allan Stephens's avatar
    tipc: Introduce node signature field in neighbor discovery message · fc0eea69
    Allan Stephens authored
    
    
    Adds support for the new "node signature" in neighbor discovery messages,
    which is a 16 bit identifier chosen randomly when TIPC is initialized.
    This field makes it possible for nodes receiving a neighbor discovery
    message to detect if multiple neighboring nodes are using the same network
    address (i.e. <Z.C.N>), even when the messages are arriving on different
    interfaces.
    
    This first phase of node signature support creates the signature,
    incorporates it into outgoing neighbor discovery messages, and tracks
    the signature used by valid neighbors. An upcoming patch builds on this
    foundation to implement the improved duplicate neighbor detection checking.
    
    Signed-off-by: default avatarAllan Stephens <allan.stephens@windriver.com>
    Signed-off-by: default avatarPaul Gortmaker <paul.gortmaker@windriver.com>
    fc0eea69