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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | SEE ALSO | AUTHOR | COLOPHON |
UMAD_POLL(3) OpenIB Programmer´s Manual UMAD_POLL(3)
umad_poll - poll umad
#include <infiniband/umad.h>
int umad_poll(int portid, int timeout_ms);
umad_poll() waits up to timeout_ms milliseconds for a packet to be
received from the port specified by portid. Once a packet is ready
to be read, the function returns 0. After that the packet can be read
using umad_recv(). Otherwise, -ETIMEDOUT is returned. Note that
successfully polling a port does not guarantee that the subsequent
umad_recv() will be non blocking when several threads are using the
same port. Instead, use a timeout_ms parameter of zero to umad_recv()
to ensure a non-blocking read.
umad_poll() returns 0 on success, and a negative value on error as
follows:
-EINVAL invalid port handle or agentid
-ETIMEDOUT poll operation timed out
-EIO poll operation failed
umad_recv(3)
Hal Rosenstock <halr@voltaire.com>
This page is part of the rdma-core (RDMA Core Userspace Libraries and
Daemons) project. Information about the project can be found at
⟨https://github.com/linux-rdma/rdma-core⟩. If you have a bug report
for this manual page, send it to linux-rdma@vger.kernel.org. This
page was obtained from the project's upstream Git repository
⟨https://github.com/linux-rdma/rdma-core.git⟩ on 2020-08-13. (At
that time, the date of the most recent commit that was found in the
repository was 2020-08-05.) If you discover any rendering problems
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OpenIB October 23, 2007 UMAD_POLL(3)
Pages that refer to this page: umad_recv(3)