• Xin Long's avatar
    sctp: change to save MSG_MORE flag into assoc · f9ba3501
    Xin Long authored
    David Laight noticed the support for MSG_MORE with datamsg->force_delay
    didn't really work as we expected, as the first msg with MSG_MORE set
    would always block the following chunks' dequeuing.
    
    This Patch is to rewrite it by saving the MSG_MORE flag into assoc as
    David Laight suggested.
    
    asoc->force_delay is used to save MSG_MORE flag before a msg is sent.
    All chunks in queue would not be sent out if asoc->force_delay is set
    by the msg with MSG_MORE flag, until a new msg without MSG_MORE flag
    clears asoc->force_delay.
    
    Note that this change would not affect the flush is generated by other
    triggers, like asoc->state != ESTABLISHED, queue size > pmtu etc.
    
    v1->v2:
      Not clear asoc->force_delay after sending the msg with MSG_MORE flag.
    
    Fixes: 4ea0c32f ("sctp: add support for MSG_MORE")
    Signed-off-by: default avatarXin Long <lucien.xin@gmail.com>
    Acked-by: default avatarDavid Laight <david.laight@aculab.com>
    Acked-by: default avatarMarcelo Ricardo Leitner <marcelo.leitner@gmail.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    f9ba3501
structs.h 62.1 KB