[PATCH] PATCH: i40e Improve trusted VF MAC addresses logging when limit is reached
From: David Hill <hidden>
Date: 2025-08-05 13:27:17
Subsystem:
intel ethernet drivers, networking drivers, the rest · Maintainers:
Tony Nguyen, Przemek Kitszel, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
When a VF reaches the limit introduced in this commit [1], the host reports
an error in the syslog but doesn't mention which VF reached its limit and
what the limit is actually is which makes troubleshooting of networking
issue a bit tedious. This commit simply improves this error reporting
by adding which VF number has reached a limit and what that limit is.
[1] commit cfb1d572c986 ("i40e: Add ensurance of MacVlan resources for every
trusted VF")
Signed-off-by: David Hill <redacted>
---
drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
index 9b8efdeafbcf..c66c8bbc3993 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c@@ -2932,13 +2932,14 @@ static inline int i40e_check_vf_permission(struct i40e_vf *vf, ++mac2add_cnt; } + int new_count = i40e_count_filters(vsi) + mac2add_cnt; + int max_macvlan = I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(pf->num_alloc_vfs, hw->num_ports); /* If this VF is not privileged, then we can't add more than a limited * number of addresses. Check to make sure that the additions do not * push us over the limit. */ if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) { - if ((i40e_count_filters(vsi) + mac2add_cnt) > - I40E_VC_MAX_MAC_ADDR_PER_VF) { + if ( new_count > I40E_VC_MAX_MAC_ADDR_PER_VF) { dev_err(&pf->pdev->dev, "Cannot add more MAC addresses, VF is not trusted, switch the VF to trusted to add more functionality\n"); return -EPERM;
@@ -2949,11 +2950,10 @@ static inline int i40e_check_vf_permission(struct i40e_vf *vf, * all VFs. */ } else { - if ((i40e_count_filters(vsi) + mac2add_cnt) > - I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(pf->num_alloc_vfs, - hw->num_ports)) { + if (new_count > max_macvlan) { dev_err(&pf->pdev->dev, - "Cannot add more MAC addresses, trusted VF exhausted it's resources\n"); + "Cannot add more MAC addresses, trusted VF %d uses (%d/%d) MAC addresses\n", + vf->vf_id, new_count, max_macvlan); return -EPERM; } }
--
2.50.1
--
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.