IPoIB TX NAPI
Status from this message: Thanks, applied (in lieu of the original patch set that I already
Get series with b4
b4 am [email protected]Versions newest first
Changes in v1 from the cover letter
* Rebase to latest for-next, commit 894b82c427d0 ("Merge branch 'timer_setup' into for-next")
Patches in v1 Applied
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/3 | IB/ipoib: Get rid of the tx_outstanding variable in all modesdrivers/ drivers/ drivers/ | +10 | 0 replies | |
| 2/3 | IB/ipoib: Use NAPI in UD/TX flowsdrivers/ drivers/ drivers/ +2 more | +136 | 0 replies | |
| 3/3 | IB/ipoib: Change number of TX wqe to 64drivers/ | +1 | 0 replies |
Reviews trailers per patch
All 3 patches have a Reviewed-by or Acked-by.
| Patch | Alex Vesker |
|---|---|
| 1/3 | R-b |
| 2/3 | R-b |
| 3/3 | R-b |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.
Cover letter [PATCH rdma-next v1 0/3] IPoIB TX NAPI
Changelog from v0:
* Rebase to latest for-next, commit 894b82c427d0 ("Merge branch 'timer_setup' into for-next")
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Quoted 1 line
From Erez Shitrit <erezsh-VPRAkNaXOzVWk0Htik3J/[email protected]>
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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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