IPOIB_CM_BUF_SIZE
IPOIB_CM_HEAD_SIZE = IPOIB_CM_BUF_SIZE % PAGE_SIZE,
IPOIB_CM_RX_SG = ALIGN(IPOIB_CM_BUF_SIZE, PAGE_SIZE) / PAGE_SIZE,
data.mtu = cpu_to_be32(IPOIB_CM_BUF_SIZE);
data.mtu = cpu_to_be32(IPOIB_CM_BUF_SIZE);