• Arnaldo Carvalho de Melo's avatar
    [TFRC]: New rx history code · b84a2189
    Arnaldo Carvalho de Melo authored
    Credit here goes to Gerrit Renker, that provided the initial implementation for
    this new codebase.
    
    I modified it just to try to make it closer to the existing API, renaming some
    functions, add namespacing and fix one bug where the tfrc_rx_hist_alloc was not
    freeing the allocated ring entries on the error path.
    
    Original changeset comment from Gerrit:
          -----------
    This provides a new, self-contained and generic RX history service for TFRC
    based protocols.
    
    Details:
     * new data structure, initialisation and cleanup routines;
     * allocation of dccp_rx_hist entries local to packet_history.c,
       as a service exported by the dccp_tfrc_lib module.
     * interface to automatically track highest-received seqno;
     * receiver-based RTT estimation (needed for instance by RFC 3448, 6.3.1);
     * a generic function to test for `data packets' as per  RFC 4340, sec. 7.7.
    Signed-off-by: default avatarGerrit Renker <gerrit@erg.abdn.ac.uk>
    Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    b84a2189
packet_history.c 9.65 KB