RDMA/irdma: Fix memory leak of PBLE objects

On rmmod of irdma, the PBLE object memory is not being freed. PBLE object
memory are not statically pre-allocated at function initialization time
unlike other HMC objects. PBLEs objects and the Segment Descriptors (SD)
for it can be dynamically allocated during scale up and SD's remain
allocated till function deinitialization.

Fix this leak by adding IRDMA_HMC_IW_PBLE to the iw_hmc_obj_types[] table
and skip pbles in irdma_create_hmc_obj but not in irdma_del_hmc_objects().

Fixes: 44d9e52977a1 ("RDMA/irdma: Implement device initialization definitions")
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Link: https://lore.kernel.org/r/20230315145231.931-3-shiraz.saleem@intel.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>

diff --git a/drivers/infiniband/hw/irdma/hw.c b/drivers/infiniband/hw/irdma/hw.c
index 2e1e2bad04011a42e4e025eb46774d2feaf7307b..43dfa4761f0698e5530ae403dcc68a9cff85a9cf 100644 (file)
--- a/drivers/infiniband/hw/irdma/hw.c
+++ b/drivers/infiniband/hw/irdma/hw.c
@@ -41,6 +41,7 @@ static enum irdma_hmc_rsrc_type iw_hmc_obj_types[] = {
        IRDMA_HMC_IW_XFFL,
        IRDMA_HMC_IW_Q1,
        IRDMA_HMC_IW_Q1FL,
+       IRDMA_HMC_IW_PBLE,
        IRDMA_HMC_IW_TIMER,
        IRDMA_HMC_IW_FSIMC,
        IRDMA_HMC_IW_FSIAV,
@@ -827,6 +828,8 @@ static int irdma_create_hmc_objs(struct irdma_pci_f *rf, bool privileged,
        info.entry_type = rf->sd_type;
 
        for (i = 0; i < IW_HMC_OBJ_TYPE_NUM; i++) {
+               if (iw_hmc_obj_types[i] == IRDMA_HMC_IW_PBLE)
+                       continue;
                if (dev->hmc_info->hmc_obj[iw_hmc_obj_types[i]].cnt) {
                        info.rsrc_type = iw_hmc_obj_types[i];
                        info.count = dev->hmc_info->hmc_obj[info.rsrc_type].cnt;