net/ionic: avoid OOB TX partner lookup for hwstamp RXQ

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The dedicated hardware timestamp RX queue is allocated with q->index
equal to lif->ionic->nrxqs_per_lif. The normal txqcqs array only
contains the regular queue pairs, so using that index to set rxq->partner
can read one entry past txqcqs[] and then write through the derived
pointer.
Only link RX/TX partners for normal queue-pair indexes. Leave the hwstamp
RX queue unpaired, and make the XDP_TX path abort cleanly if an RX queue
has no TX partner.

Fixes: 8eeed8373e ("ionic: Add XDP_TX support")
Reviewed-by: Si-Wei Liu <si-wei.liu@oracle.com>
Reviewed-by: Shannon Nelson <sln@onemain.com>
Cc: stable@vger.kernel.org
Signed-off-by: Anand Khoje <anand.a.khoje@oracle.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Brett Creeley <brett.creeley@amd.com>
Link: https://patch.msgid.link/20260813083705.454897-1-anand.a.khoje@oracle.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

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This commit is contained in:

Anand Khoje 2026-08-13 08:37:05 +00:00 • committed by Paolo Abeni

parent 47226bbdef

commit d92255b405

2 changed files with 21 additions and 3 deletions

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17

drivers/net/ethernet/pensando/ionic/ionic_lif.c

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7

drivers/net/ethernet/pensando/ionic/ionic_txrx.c

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