net/mlx5e: Derive Striding RQ size from MTU
In Striding RQ, each WQE serves multiple packets (hence called Multi-Packet WQE, MPWQE). The size of a MPWQE is constant (currently 256KB). Upon a ringparam set operation, we calculate the number of MPWQEs per RQ. For this, first it is needed to determine the number of packets that can reside within a single MPWQE. In this patch we use the actual MTU size instead of ETH_DATA_LEN for this calculation. This implies that a change in MTU might require a change in Striding RQ ring size. In addition, this obsoletes some WQEs-to-packets translation functions and helps delete ~60 LOC. Signed-off-by: NTariq Toukan <tariqt@mellanox.com> Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
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