Commit c8c7c075 authored by Nayan Kumar's avatar Nayan Kumar Committed by Leon Romanovsky
Browse files

RDMA/irdma: Make resource distribution algorithm more QP oriented 

Adapt the resource distribution algorithm in irdma_cfg_fpm_val to be more
QP oriented. If the configuration is too big for the available memory,
trim the MR and PBLE's first before trimming the QPs. This also avoids
having to double QPs requested as input to algorithm for GEN1 devices.

Link: https://lore.kernel.org/r/20220705230815.265-5-shiraz.saleem@intel.com


Signed-off-by: default avatarNayan Kumar <nayan.kumar@intel.com>
Signed-off-by: default avatarShiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
parent 36a26d12

drivers/infiniband/hw/irdma/ctrl.c

+5 −3
Original line number Diff line number Diff line
@@ -4872,10 +4872,12 @@ int irdma_cfg_fpm_val(struct irdma_sc_dev *dev, u32 qp_count) 


		sd_diff = sd_needed - hmc_fpm_misc->max_sds;

		if (sd_diff > 128) {

			if (qpwanted > 128 && sd_diff > 144)

			if (!(loop_count % 2) && qpwanted > 128) {

				qpwanted /= 2;

			} else {

				mrwanted /= 2;

				pblewanted /= 2;

			}

			continue;

		}

		if (dev->cqp->hmc_profile != IRDMA_HMC_PROFILE_FAVOR_VF &&

drivers/infiniband/hw/irdma/hw.c

+1 −4
Original line number Diff line number Diff line
@@ -1512,9 +1512,6 @@ static int irdma_hmc_setup(struct irdma_pci_f *rf) 
	int status;

	u32 qpcnt;



	if (rf->rdma_ver == IRDMA_GEN_1)

		qpcnt = rsrc_limits_table[rf->limits_sel].qplimit * 2;

	else

	qpcnt = rsrc_limits_table[rf->limits_sel].qplimit;



	rf->sd_type = IRDMA_SD_TYPE_DIRECT;