bnxt_en: Handle no aggregation ring gracefully.
The current code assumes that we will always have at least 2 rx rings, 1 will be used as an aggregation ring for TPA and jumbo page placements. However, it is possible, especially on a VF, that there is only 1 rx ring available. In this scenario, the current code will fail to initialize. To handle it, we need to properly set up only 1 ring without aggregation. Set a new flag BNXT_FLAG_NO_AGG_RINGS for this condition and add logic to set up the chip to place RX data linearly into a single buffer per packet. Signed-off-by: NMichael Chan <michael.chan@broadcom.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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