[Intel-wired-lan] [next PATCH S4 07/11] i40e: add num_vectors checker in iwarp handler
Alice Michael
alice.michael at intel.com
Fri Mar 29 22:08:36 UTC 2019
From: Sergey Nemov <sergey.nemov at intel.com>
Field num_vectors from struct virtchnl_iwarp_qvlist_info should not be
larger than num_msix_vectors_vf in the hw struct. The iwarp uses the
same set of vectors as the LAN VF driver.
Signed-off-by: Sergey Nemov <sergey.nemov at intel.com>
---
drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
index 00345bbf68ec..25490cfb06fc 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -442,6 +442,16 @@ static int i40e_config_iwarp_qvlist(struct i40e_vf *vf,
u32 next_q_idx, next_q_type;
u32 msix_vf, size;
+ msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
+
+ if (qvlist_info->num_vectors > msix_vf) {
+ dev_warn(&pf->pdev->dev,
+ "Incorrect number of iwarp vectors %u. Maximum %u allowed.\n",
+ qvlist_info->num_vectors,
+ msix_vf);
+ goto err;
+ }
+
size = sizeof(struct virtchnl_iwarp_qvlist_info) +
(sizeof(struct virtchnl_iwarp_qv_info) *
(qvlist_info->num_vectors - 1));
--
2.19.2
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