[PATCH 0/2] net/cxgbe: fix packed Rx handling and flow port scoping

[Abdulrahman Alshawi <ashawi@wirefilter.com>]

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This series fixes two correctness issues in the cxgbe PMD that can cause
traffic loss on Chelsio T6 adapters, especially when rte_flow QUEUE
rules concentrate ingress on a small set of RX queues. 

Patch 1 fixes packed Rx response handling. The current PMD assumes every
response descriptor starts a new Free List buffer by requiring
F_RSPD_NEWBUF on each response. That assumption does not always hold for
packed ingress responses. Under sustained small-packet traffic to a
single ingress queue, the FL/IQ state goes out of sync and the affected
Rx path stops making forward progress. 

Patch 2 scopes rte_flow rules to the ingress port they were created on.
Chelsio filters are programmed in adapter-wide tables, and the PMD
already supports the iport field in the hardware filter spec. However,
the flow parser never fills it for normal per-port rules, so a rule
created on one port can also match traffic arriving on sibling ports of
the same adapter. 

Both issues reproduce with stock testpmd on T62100-LP-CR. The per-patch
commit messages include the details and reproducers. 

Abdulrahman Alshawi (2):
net/cxgbe: fix Rx handling for packed responses
net/cxgbe: restrict rte_flow rules to ingress port 

.mailmap | 1 +
drivers/net/cxgbe/base/adapter.h | 1 +
drivers/net/cxgbe/cxgbe_flow.c | 19 +++++
drivers/net/cxgbe/sge.c | 122 ++++++++++++++++++++++++-------
4 files changed, 118 insertions(+), 25 deletions(-) 

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2.39.5   
 

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