iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

crypto: octeontx2 - By default allocate one CPT LF per CPT VF

Browse Source 
There are limited number CPT LFs (example 64 LFs on cn10k) and
these LFs are allocated/attached to CPT VF on its creation.
cptpf sysfs parameter "kvf_limits" defines number of CPT LFs
per CPT VF. Default "kvf_limits" is initialized to zero and if
kvf_limits is zero then number of LF allocated are equal to
online cpus in system.

For example on 24 core system, 24 CPT LFs will be attached per VF.
That means no CPT LF available when creating more than 2 CPT VFs
on system which have total 64 LFs. Although VFs gets created but
no LF attached to it.

There seems no reason to default allocate as many LFs as many
online cpus in system. This patch initializes "kvf_limits" to
one to limit one LF allocated per CPT VF. "kvf_limits" can
be changed in range of 1 to number-of-online-cpus via sysfs.

Signed-off-by: Bharat Bhushan <bbhushan2@marvell.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Bharat Bhushan 2023-11-29 21:11:33 +05:30 committed by Herbert Xu
parent a643212c9f
commit 040791041b
2 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/crypto/marvell/octeontx2/otx2_cptpf_main.c
View File

@ -797,6 +797,7 @@ static int otx2_cptpf_probe(struct pci_dev *pdev,
goto destroy_afpf_mbox;
cptpf->max_vfs = pci_sriov_get_totalvfs(pdev);
cptpf->kvf_limits = 1;
err = cn10k_cptpf_lmtst_init(cptpf);
if (err)

3
drivers/crypto/marvell/octeontx2/otx2_cptvf_main.c
View File

@ -277,8 +277,7 @@ static int cptvf_lf_init(struct otx2_cptvf_dev *cptvf)
if (ret)
return ret;
lfs_num = cptvf->lfs.kvf_limits ? cptvf->lfs.kvf_limits :
num_online_cpus();
lfs_num = cptvf->lfs.kvf_limits;
otx2_cptlf_set_dev_info(lfs, cptvf->pdev, cptvf->reg_base,
&cptvf->pfvf_mbox, cptvf->blkaddr);