[PATCH v7 08/16] bus/dpaa: add DPAA cgrid cleanup support

[Hemant Agrawal]

From: Jun Yang <jun.yang at nxp.com>

Add qman_find_fq_by_cgid() to find frame queues associated with
a given CGID. This allows the driver to verify that all FQs
using a CGR are shut down before releasing the CGR ID, preventing
use-after-free of CGR resources.

Signed-off-by: Jun Yang <jun.yang at nxp.com>
Signed-off-by: Hemant Agrawal <hemant.agrawal at nxp.com>
---
 drivers/bus/dpaa/dpaa_bus_base_symbols.c | 1 +
 drivers/bus/dpaa/include/fsl_qman.h      | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/drivers/bus/dpaa/dpaa_bus_base_symbols.c b/drivers/bus/dpaa/dpaa_bus_base_symbols.c
index bb308e0d61..02b245cd50 100644
--- a/drivers/bus/dpaa/dpaa_bus_base_symbols.c
+++ b/drivers/bus/dpaa/dpaa_bus_base_symbols.c
@@ -56,6 +56,7 @@ RTE_EXPORT_INTERNAL_SYMBOL(qman_alloc_pool_range)
 RTE_EXPORT_INTERNAL_SYMBOL(qman_alloc_cgrid_range)
 RTE_EXPORT_INTERNAL_SYMBOL(qman_release_cgrid_range)
 RTE_EXPORT_INTERNAL_SYMBOL(dpaa_get_qm_channel_pool_num)
+RTE_EXPORT_INTERNAL_SYMBOL(qman_find_fq_by_cgrid)
 RTE_EXPORT_INTERNAL_SYMBOL(dpaa_intr_enable)
 RTE_EXPORT_INTERNAL_SYMBOL(dpaa_intr_disable)
 RTE_EXPORT_INTERNAL_SYMBOL(dpaa_get_ioctl_version_number)
diff --git a/drivers/bus/dpaa/include/fsl_qman.h b/drivers/bus/dpaa/include/fsl_qman.h
index bd46207232..20321ed355 100644
--- a/drivers/bus/dpaa/include/fsl_qman.h
+++ b/drivers/bus/dpaa/include/fsl_qman.h
@@ -1907,6 +1907,9 @@ static inline int qman_shutdown_fq_by_fqid(u32 fqid)
 	return qman_shutdown_fq(&fq);
 }
 
+__rte_internal
+int qman_find_fq_by_cgrid(u32 cgrid, u32 *fqid);
+
 /**
  * qman_reserve_fqid_range - Reserve the specified range of frame queue IDs
  * @fqid: the base FQID of the range to deallocate
-- 
2.25.1