[SCSI] bfa: Add support for IO throttling at port level
Add capability to limit the number of exchanges on a port to
avoid queue-full conditions from the target side.
Signed-off-by: Sudarsana Reddy Kalluru <skalluru@brocade.com>
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/bfa/bfa_core.c b/drivers/scsi/bfa/bfa_core.c
index 837879d..eb29628 100644
--- a/drivers/scsi/bfa/bfa_core.c
+++ b/drivers/scsi/bfa/bfa_core.c
@@ -983,7 +983,8 @@
cfg_info->single_msix_vec = 1;
cfg_info->endian_sig = BFI_IOC_ENDIAN_SIG;
cfg_info->num_cqs = cfg->fwcfg.num_cqs;
- cfg_info->num_ioim_reqs = cpu_to_be16(cfg->fwcfg.num_ioim_reqs);
+ cfg_info->num_ioim_reqs = cpu_to_be16(bfa_fcpim_get_throttle_cfg(bfa,
+ cfg->fwcfg.num_ioim_reqs));
cfg_info->num_fwtio_reqs = cpu_to_be16(cfg->fwcfg.num_fwtio_reqs);
bfa_dma_be_addr_set(cfg_info->cfgrsp_addr, iocfc->cfgrsp_dma.pa);
@@ -1245,10 +1246,14 @@
static void
bfa_iocfc_res_recfg(struct bfa_s *bfa, struct bfa_iocfc_fwcfg_s *fwcfg)
{
+ struct bfa_iocfc_s *iocfc = &bfa->iocfc;
+ struct bfi_iocfc_cfg_s *cfg_info = iocfc->cfginfo;
+
bfa_fcxp_res_recfg(bfa, fwcfg->num_fcxp_reqs);
bfa_uf_res_recfg(bfa, fwcfg->num_uf_bufs);
bfa_rport_res_recfg(bfa, fwcfg->num_rports);
- bfa_fcp_res_recfg(bfa, fwcfg->num_ioim_reqs);
+ bfa_fcp_res_recfg(bfa, cpu_to_be16(cfg_info->num_ioim_reqs),
+ fwcfg->num_ioim_reqs);
bfa_tskim_res_recfg(bfa, fwcfg->num_tskim_reqs);
}