bnxt_en: Reallocate RX completion ring for TPH support

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In order to program the correct Steering Tag during an IRQ affinity
change, we need to free/re-allocate the RX completion ring during
queue_restart.  If TPH is enabled, call FW to free the Rx completion
ring and clear the ring entries in queue_stop().  Re-allocate it in
queue_start() if TPH is enabled.  Note that TPH mode is not enabled
in this patch and will be enabled later in the patch series.

While modifying bnxt_queue_start(), remove the unnecessary zeroing of
rxr->rx_next_cons.  It gets overwritten by the clone in
bnxt_queue_start().  Remove the rx_reset counter increment since
restart is not reset.  Add comment to clarify that the ring
allocations in queue_start should never fail.

Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20250213011240.1640031-9-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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This commit is contained in:

Somnath Kotur 2025-02-12 17:12:36 -08:00 • committed by Jakub Kicinski

parent 4c8e612c9a

commit 6b6bf60fc9

2 changed files with 34 additions and 6 deletions

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38

drivers/net/ethernet/broadcom/bnxt/bnxt.c

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2

drivers/net/ethernet/broadcom/bnxt/bnxt.h

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