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e112373fd6
Since IPoIB connected mode does not NETIF_F_SG, we only have one DMA mapping per send, so we don't need a mapping[] array. Define a new struct with a single u64 mapping member and use it for the CM tx_ring. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>