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i40e: add num_vectors checker in iwarp handler

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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@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Sergey Nemov 2019-03-29 15:08:36 -07:00 • committed by Jeff Kirsher
commit 7015ca3df9
1 changed files with 10 additions and 0 deletions
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10
drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
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@ -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));