Start XSK instance core

xsk_instance_start_core.c

/* If we have an IRQ and IRQ Core ID, we should ask the PAL to map the IRQ to
* the provided Core ID. */

if (xi->irq < UINT32_MAX && xi->irq_core_id < UINT32_MAX)
{
	/* Initially set all cores off */

	bl_pal_clear_coremap(&coremap);

	/* Then enable single selected core */

	bl_pal_set_coremap_by_cores(
	    teb, &coremap, BL_PAL_COREMAP_PHYSICAL, &xi->irq_core_id, 1);

	/* Ask the PAL if the affinity needs changing. */

	res = bl_pal_check_irq_affinity(teb, xi->irq, &coremap, &is_equal);
	if (res != BL_OK)
	{
		bl_log_error_t(
		    teb,
		    "Error checking affinity for XSK instance %s IRQ %u: %s",
		    xi->name,
		    xi->irq,
		    bl_error_get_last_msg(teb));
		return BL_ERR;
	}

	/* Finally activate the requested mapping if we need to */
	if (is_equal)
		bl_log_info_t(
		    teb,
		    "XSK instance %s IRQ %u already activated for core 0x%X",
		    xi->name,
		    xi->irq,
		    xi->irq_core_id);
	else
	{
		res = bl_pal_activate_irq_mapping(teb, xi->irq, &coremap);
		if (res != BL_OK)
		{
			bl_log_error_t(
			    teb,
			    "Error mapping XSK instance %s IRQ %u affinity to "
			    "core 0x%X: %s",
			    xi->name,
			    xi->irq,
			    xi->irq_core_id,
			    bl_error_get_last_msg(teb));
			return BL_ERR;
		}
	}
}