• Fan Du's avatar
    ipv4: Create probe timer for tcp PMTU as per RFC4821 · 05cbc0db
    Fan Du authored
    As per RFC4821 7.3.  Selecting Probe Size, a probe timer should
    be armed once probing has converged. Once this timer expired,
    probing again to take advantage of any path PMTU change. The
    recommended probing interval is 10 minutes per RFC1981. Probing
    interval could be sysctled by sysctl_tcp_probe_interval.
    
    Eric Dumazet suggested to implement pseudo timer based on 32bits
    jiffies tcp_time_stamp instead of using classic timer for such
    rare event.
    Signed-off-by: default avatarFan Du <fan.du@intel.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    05cbc0db
tcp.h 53 KB