Changelog from v0:
* Rebase to latest for-next, commit 894b82c427d0 ("Merge branch 'timer_setup' into for-next")
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>From Erez Shitrit <erezsh@xxxxxxxxxxxx>
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It is very common in modern network devices to use NAPI in RX and TX,
in the UD/TX flows IPoIB uses a polling mechanism (not as it does in
the CM mode).
Except of the motivation to use the same mechanism for IPoIB as for
netdevices, there are number of issues in current polling mechanism:
* SKBs that are kept longer than they should be and there are applications
that warn about that (some firewalls for example).
* Statistics that are not updated to the real value. It blocks support
for time synchronization protocols over the IPoIB protocol, like PTP
and so on.
* The TX in CM mode already uses NAPI, there is no reason to keep two
different ways for TX one for UD and one for the CM.
The patches are available in the git repository at:
git.kernel.org/pub/scm/linux/kernel/git/leon/linux-rdma.git tags/rdma-next-2017-10-19
Thanks
---------------------------------------
Erez Shitrit (3):
IB/ipoib: Get rid of the tx_outstanding variable in all modes
IB/ipoib: Use NAPI in UD/TX flows
IB/ipoib: Change number of TX wqe to 64
drivers/infiniband/ulp/ipoib/ipoib.h | 14 ++--
drivers/infiniband/ulp/ipoib/ipoib_cm.c | 46 +++++-----
drivers/infiniband/ulp/ipoib/ipoib_ib.c | 129 +++++++++++++++++------------
drivers/infiniband/ulp/ipoib/ipoib_main.c | 24 ++++--
drivers/infiniband/ulp/ipoib/ipoib_verbs.c | 17 ++--
5 files changed, 143 insertions(+), 87 deletions(-)
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2.14.2
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