[golan] Use ETH_HLEN for inline header size

The driver does not correctly handle very short transmitted packets
such as EAPoL-Start where the entire DMA content lies within the
current send work queue entry inline header length of 18 bytes.

Fix by reducing the inline header length to the Ethernet frame header
length of 14 bytes.

Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/drivers/infiniband/golan.c

@@ -2502,7 +2502,7 @@ static mlx_status shomron_fill_eth_send_wqe ( struct ib_device *ibdev,
 	}
 
 #define SHOMRON_GENERATE_CQE 0x3
-#define SHOMRON_INLINE_HEADERS_SIZE 18
+#define SHOMRON_INLINE_HEADERS_SIZE ETH_HLEN
 #define SHOMRON_INLINE_HEADERS_OFFSET 32
 	MLX_FILL_2 ( &eth_wqe->ctrl, 0, opcode, FLEXBOOT_NODNIC_OPCODE_SEND,
 			wqe_index, wqe_index & 0xFFFF);