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SubjectRe: [PATCH net-next] bnxt_en: Fix logic of forward the VF MAC address to PF in bnxt_vf_validate_set_mac
On Mon, Jul 23, 2018 at 10:24 PM, YueHaibing <yuehaibing@huawei.com> wrote:
> Based on the comments,req->l2addr must match the VF MAC address
> if firmware spec >= 1.2.2, mac_ok can be true.
>
> Signed-off-by: YueHaibing <yuehaibing@huawei.com>
> ---
> drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c | 7 ++-----
> 1 file changed, 2 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
> index a649108..7925964 100644
> --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
> +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
> @@ -954,12 +954,9 @@ static int bnxt_vf_validate_set_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
> if (ether_addr_equal((const u8 *)req->l2_addr, vf->mac_addr))
> mac_ok = true;
> } else if (is_valid_ether_addr(vf->vf_mac_addr)) {
> - if (ether_addr_equal((const u8 *)req->l2_addr, vf->vf_mac_addr))
> + if (ether_addr_equal((const u8 *)req->l2_addr, vf->vf_mac_addr) &&
> + bp->hwrm_spec_code >= 0x10202)
> mac_ok = true;

I'm not sure if this is correct. If firmware spec < 0x10202, the VF
MAC address is not forwarded to the PF and so it doesn't have to match
and mac_ok should still be true. I think we are missing that
condition with this patch.

I need to let my colleague Vasundhara comment on this. She is more
familiar with this logic.

> - } else if (bp->hwrm_spec_code < 0x10202) {
> - mac_ok = true;
> - } else {
> - mac_ok = true;
> }
> if (mac_ok)
> return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
> --
> 2.7.0
>
>

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