Commit 8d158f47 authored by Jacob Moroni's avatar Jacob Moroni Committed by Leon Romanovsky
Browse files

RDMA/irdma: Fix SD index calculation 



In some cases, it is possible for pble_rsrc->next_fpm_addr to be
larger than u32, so remove the u32 cast to avoid unintentional
truncation.

This fixes the following error that can be observed when registering
massive memory regions:

[  447.227494] (NULL ib_device): cqp opcode = 0x1f maj_err_code = 0xffff min_err_code = 0x800c
[  447.227505] (NULL ib_device): [Update PE SDs Cmd Error][op_code=21] status=-5 waiting=1 completion_err=1 maj=0xffff min=0x800c

Fixes: e8c4dbc2 ("RDMA/irdma: Add PBLE resource manager")
Signed-off-by: default avatarJacob Moroni <jmoroni@google.com>
Link: https://patch.msgid.link/20250923190850.1022773-1-jmoroni@google.com


Acked-by: default avatarTatyana Nikolova <tatyana.e.nikolova@intel.com>
Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
parent 88de89f1

drivers/infiniband/hw/irdma/pble.c

+1 −1
Original line number Diff line number Diff line
@@ -71,7 +71,7 @@ int irdma_hmc_init_pble(struct irdma_sc_dev *dev, 
static void get_sd_pd_idx(struct irdma_hmc_pble_rsrc *pble_rsrc,

			  struct sd_pd_idx *idx)

{

	idx->sd_idx = (u32)pble_rsrc->next_fpm_addr / IRDMA_HMC_DIRECT_BP_SIZE;

	idx->sd_idx = pble_rsrc->next_fpm_addr / IRDMA_HMC_DIRECT_BP_SIZE;

	idx->pd_idx = (u32)(pble_rsrc->next_fpm_addr / IRDMA_HMC_PAGED_BP_SIZE);

	idx->rel_pd_idx = (idx->pd_idx % IRDMA_HMC_PD_CNT_IN_SD);

}