1. 18 Jun, 2008 1 commit
    • Bernard Pidoux's avatar
      rose: improving AX25 routing frames via ROSE network · fe2c802a
      Bernard Pidoux authored
      ROSE network is organized through nodes connected via hamradio or Internet.
      AX25 packet radio frames sent to a remote ROSE address destination are routed
      through these nodes.
      
      Without the present patch, automatic routing mechanism did not work optimally
      due to an improper parameter checking.
      
      rose_get_neigh() function is called either by rose_connect() or by
      rose_route_frame().
      
      In the case of a call from rose_connect(), f0 timer is checked to find if a connection
      is already pending. In that case it returns the address of the neighbour, or returns a NULL otherwise.
      
      When called by rose_route_frame() the purpose was to route a packet AX25 frame
      through an adjacent node given a destination rose address.
      However, in that case, t0 timer checked does not indicate if the adjacent node
      is actually connected even if the timer is not null. Thus, for each frame sent, the
      function often tried to start a new connexion even if the adjacent node was already connected.
      
      The patch adds a "new" parameter that is true when the function is called by
      rose route_frame().
      This instructs rose_get_neigh() to check node parameter "restarted". 
      If restarted is true it means that the route to the destination address is opened via a neighbour
      node already connected.
      If "restarted" is false the function returns a NULL.
      In that case the calling function will initiate a new connection as before.
      
      This results in a fast routing of frames, from nodes to nodes, until
      destination is reached, as originaly specified by ROSE protocole.
      Signed-off-by: default avatarBernard Pidoux <f6bvp@amsat.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      fe2c802a
  2. 17 Jun, 2008 39 commits