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author | Chuck Lever <chuck.lever@oracle.com> | 2016-03-04 11:28:36 -0500 |
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committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2016-03-14 14:56:04 -0400 |
commit | 552bf225281f96e7a02e1a1b874966fdb6b997e0 (patch) | |
tree | 6dc7f21bc30ff3e0e7ac1c9c2d465069ed9c612c /lib/flex_proportions.c | |
parent | 23826c7aeac7e333bfee6f10a3407a23c58b6147 (diff) | |
download | blackbird-op-linux-552bf225281f96e7a02e1a1b874966fdb6b997e0.tar.gz blackbird-op-linux-552bf225281f96e7a02e1a1b874966fdb6b997e0.zip |
xprtrdma: Use new CQ API for RPC-over-RDMA client receive CQs
Calling ib_poll_cq() to sort through WCs during a completion is a
common pattern amongst RDMA consumers. Since commit 14d3a3b2498e
("IB: add a proper completion queue abstraction"), WC sorting can
be handled by the IB core.
By converting to this new API, xprtrdma is made a better neighbor to
other RDMA consumers, as it allows the core to schedule the delivery
of completions more fairly amongst all active consumers.
Because each ib_cqe carries a pointer to a completion method, the
core can now post its own operations on a consumer's QP, and handle
the completions itself, without changes to the consumer.
xprtrdma's reply processing is already handled in a work queue, but
there is some initial order-dependent processing that is done in the
soft IRQ context before a work item is scheduled.
IB_POLL_SOFTIRQ is a direct replacement for the current xprtrdma
receive code path.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Devesh Sharma <devesh.sharma@broadcom.com>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'lib/flex_proportions.c')
0 files changed, 0 insertions, 0 deletions