[ovs-dev] [PATCH V6 00/18] netdev datapath actions offload

Eli Britstein elibr at mellanox.com
Tue Jan 7 19:28:26 UTC 2020


On 1/7/2020 8:46 PM, Ilya Maximets wrote:
> On 19.12.2019 12:54, Eli Britstein wrote:
>> Currently, netdev datapath offload only accelerates the flow match
>> sequence by associating a mark per flow. This series introduces the full
>> offload of netdev datapath flows by having the HW also perform the flow
>> actions.
>>
>> This series adds HW offload for output, drop, set MAC, set IPv4, set
>> TCP/UDP ports and tunnel push actions using the DPDK rte_flow API.
>>
>> v1 Travis passed: https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftravis-ci.org%2Felibritstein%2FOVS%2Fbuilds%2F614511472&data=02%7C01%7Celibr%40mellanox.com%7Cfb80a09d7b9a4b5dc7da08d793a1fac6%7Ca652971c7d2e4d9ba6a4d149256f461b%7C0%7C0%7C637140196234511900&sdata=UqEGA9tXfFErL6KKI7P5X7Zvm0Krzq9KKTfvyL42T1Q%3D&reserved=0
>> v2 Travis passed: https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftravis-ci.org%2Felibritstein%2FOVS%2Fbuilds%2F619262148&data=02%7C01%7Celibr%40mellanox.com%7Cfb80a09d7b9a4b5dc7da08d793a1fac6%7Ca652971c7d2e4d9ba6a4d149256f461b%7C0%7C0%7C637140196234511900&sdata=mCB5n2eGbdhDBax7izO4UdIvdVhjZBgu6hOtF65EfCk%3D&reserved=0
>> v3 Travis passed: https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftravis-ci.org%2Felibritstein%2FOVS%2Fbuilds%2F622253870&data=02%7C01%7Celibr%40mellanox.com%7Cfb80a09d7b9a4b5dc7da08d793a1fac6%7Ca652971c7d2e4d9ba6a4d149256f461b%7C0%7C0%7C637140196234511900&sdata=UFfB8mkbOJkCMdk7QRa6CgXbHjlEGVPDx5KAx%2B%2FlLcI%3D&reserved=0
>> v4 Travis passed: https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftravis-ci.org%2Felibritstein%2FOVS%2Fbuilds%2F625654160&data=02%7C01%7Celibr%40mellanox.com%7Cfb80a09d7b9a4b5dc7da08d793a1fac6%7Ca652971c7d2e4d9ba6a4d149256f461b%7C0%7C0%7C637140196234511900&sdata=EkGoIBwCfTOb9d2EE5qDf9Akkbr6cK9JD%2BoUhK8kjrY%3D&reserved=0
>> v5 Travis passed: https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftravis-ci.org%2Felibritstein%2FOVS%2Fbuilds%2F626692202&data=02%7C01%7Celibr%40mellanox.com%7Cfb80a09d7b9a4b5dc7da08d793a1fac6%7Ca652971c7d2e4d9ba6a4d149256f461b%7C0%7C0%7C637140196234511900&sdata=4UXr57%2BFYhSo4Ujtc5L5F14TligA%2BTQCiM8O7WtheaE%3D&reserved=0
>> v6 Travis passed: https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftravis-ci.org%2Felibritstein%2FOVS%2Fbuilds%2F627132194&data=02%7C01%7Celibr%40mellanox.com%7Cfb80a09d7b9a4b5dc7da08d793a1fac6%7Ca652971c7d2e4d9ba6a4d149256f461b%7C0%7C0%7C637140196234511900&sdata=FvyoWaNsKKQR%2FDlM%2BjAWbberGIkKFi1076Z5lQOOmN4%3D&reserved=0
>>
>> v1-v2:
>> - fallback to mark/rss in case of any failure of action offload.
>> - dp_layer changed to "in_hw" in case the flow is offloaded.
>> - using netdev_ports_get instead of dp_netdev_lookup_port in stats reading.
>> - using flow_dump_next API instead of a new API.
>> - validity checks for last action of output and clone.
>> - count action should be done for drop as well.
>> - validity check for output action.
>> - added doc in Documentation/howto/dpdk.rst.
>> v2-v3:
>> - removed refactoring for netdev-offload-dpdk-flow.c file.
>> - dropped flush commits.
>> - dbg prints rate-limited, and outside lock.
>> - added validity check for output action - same flow_api handle for both netdevs.
>> - added a mutex to protect possible concurrent deletion/querying of a flow.
>> - statistics are collected using flow_get API.
>> - added more documentation in Documentation/howto/dpdk.rst.
>> v3-v4:
>> - debug prints moved to netdev-offload-dpdk.c.
>> - flow get returns full stats, not diff.
>> - removed additional fields from offload_info and dp_netdev_flow.
>> - read HW stats during dpif_netdev_flow_get as well as
>>    dpif_netdev_flow_dump_next.
>> - moved actions offload framework just before support commit.
>> - fixed memory leak in rewrite code.
>> - dropped clone commit - will be posted in next series.
>> v4-v5:
>> - statistics collecting changed to populate dp_layer and offloaded
>>    attributes. dp_layer changed to "dpdk" for fully offloaded by dpdk.
>> - display offloaded:partial for partially offloaded flows.
>> - support filter types "dpdk" and "partially-offloaded" in
>>    dpctl/dump-flows type=X.
>> - simplify code readability of rewrite commits.
>> v5-v6:
>> - debug prints improvement for partial offload installations. dbg prints
>>    for failed actions, warn for other failure.
>> - fixed memory leak in case retrieved dpdk port-id is invalid.
>>
>> Eli Britstein (17):
>>    netdev-offload-dpdk: Refactor flow patterns
>>    netdev-offload-dpdk: Refactor action items freeing scheme
>>    netdev-offload-dpdk: Dynamically allocate pattern items
>>    netdev-offload-dpdk: Improve HW offload flow debuggability
>>    netdev-dpdk: Introduce rte flow query function
>>    netdev-offload-dpdk: Return UFID-rte_flow entry in find method
>>    netdev-offload-dpdk: Framework for actions offload
>>    netdev-offload-dpdk: Implement flow get method
>>    dpctl: Support dump-flows filters "dpdk" and "partially-offloaded"
>>    dpif-netdev: Populate dpif class field in offload struct
>>    netdev-dpdk: Getter function for dpdk port id API
>>    netdev-offload: Introduce a function to validate same flow api handle
>>    netdev-offload-dpdk: Support offload of output action
>>    netdev-offload-dpdk: Support offload of drop action
>>    netdev-offload-dpdk: Support offload of set MAC actions
>>    netdev-offload-dpdk: Support offload of set IPv4 actions
>>    netdev-offload-dpdk: Support offload of set TCP/UDP ports actions
>>
>> Ophir Munk (1):
>>    dpif-netdev: Update offloaded flows statistics
>>
>>   Documentation/howto/dpdk.rst  |  21 +-
>>   NEWS                          |   5 +
>>   lib/dpctl.c                   |  97 +++--
>>   lib/dpctl.man                 |   2 +
>>   lib/dpif-netdev.c             |  81 +++-
>>   lib/netdev-dpdk.c             |  48 +++
>>   lib/netdev-dpdk.h             |   8 +
>>   lib/netdev-offload-dpdk.c     | 964 ++++++++++++++++++++++++++++++++----------
>>   lib/netdev-offload-provider.h |   1 +
>>   lib/netdev-offload.c          |  12 +
>>   10 files changed, 972 insertions(+), 267 deletions(-)
>>
> Hi.  I still didn't reach the actual code review, but I applied the series
> and tried to make some tests.  Few things:
> 1. Unfortunately, with this patch-set applied, "make check-offloads" doesn't
>     work at all.  I didn't investigate yet, but it seems that flow dumping is
>     not working as expected.
I see it doesn't work on master as well. I'll look for the offending commit.
> 2. patch-set needs a rebase on current master.
> 3. Since commit a13a0209750c ("userspace: Improved packet drop statistics.")
>     you need to add support for explicit drop action as I told previously
>     (OVS_ACTION_ATTR_DROP).
OK.
>
> You may start fixing/implementing this.  Meanwhile, I'll continue my review
> and investigation.
>
> Best regards, Ilya Maximets.


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