Jens Axboe aa1fa28fc7
io_uring: add support for recvmsg() ...
This is done through IORING_OP_RECVMSG. This opcode uses the same
sqe->msg_flags that IORING_OP_SENDMSG added, and we pass in the
msghdr struct in the sqe->addr field as well.
We use MSG_DONTWAIT to force an inline fast path if recvmsg() doesn't
block, and punt to async execution if it would have.
Acked-by: David S. Miller <davem@davemloft.net >
Signed-off-by: Jens Axboe <axboe@kernel.dk >
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