Re: [PATCH net-next] bnxt_en: Fix logic of forward the VF MAC address to PF in bnxt_vf_validate_set_mac
On Tue, Jul 24, 2018 at 9:01 AM, Vasundhara Volam wrote: > On Tue, Jul 24, 2018 at 1:01 PM, Michael Chan > wrote: >> >> On Mon, Jul 23, 2018 at 10:24 PM, YueHaibing 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 >> > --- >> > 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. > Yes Michael, you are right. Also, the plain else condition is to cover > a special case to allow VF to modify > it's own MAC when PF has not assigned a valid MAC address and HWRM > spec code > 0x10202. We should combine the "else if" and "else" below into a plain else and add some comments to explain the conditions. >> >> > - } 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 >> > >> >
Re: [PATCH net-next] bnxt_en: Fix logic of forward the VF MAC address to PF in bnxt_vf_validate_set_mac
On 2018/7/25 5:48, Michael Chan wrote: > On Tue, Jul 24, 2018 at 9:01 AM, Vasundhara Volam > wrote: >> On Tue, Jul 24, 2018 at 1:01 PM, Michael Chan >> wrote: >>> >>> On Mon, Jul 23, 2018 at 10:24 PM, YueHaibing 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 --- 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. >> Yes Michael, you are right. Also, the plain else condition is to cover >> a special case to allow VF to modify >> it's own MAC when PF has not assigned a valid MAC address and HWRM >> spec code > 0x10202. > > We should combine the "else if" and "else" below into a plain else and > add some comments to explain the conditions. Thank you for clarification. I will send a new patch for this. > >>> - } 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 > > . >