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    rxrpc: Use MSG_WAITALL to tell sendmsg() to temporarily ignore signals · bc5e3a54
    David Howells 提交于
    Make AF_RXRPC accept MSG_WAITALL as a flag to sendmsg() to tell it to
    ignore signals whilst loading up the message queue, provided progress is
    being made in emptying the queue at the other side.
    
    Progress is defined as the base of the transmit window having being
    advanced within 2 RTT periods.  If the period is exceeded with no progress,
    sendmsg() will return anyway, indicating how much data has been copied, if
    any.
    
    Once the supplied buffer is entirely decanted, the sendmsg() will return.
    Signed-off-by: NDavid Howells <dhowells@redhat.com>
    bc5e3a54
sendmsg.c 20.4 KB