Re: [RFC net-next v2 4/5] net: phy: nxp-c45-tja11xx: add MACsec statistics

[Radu Pirea (OSS)]

On 25.08.2023 16:41, Sabrina Dubroca wrote:
> 2023-08-24, 12:16:14 +0300, Radu Pirea (NXP OSS) wrote:
> > @@ -1323,8 +1469,10 @@ static int nxp_c45_mdo_del_txsa(struct macsec_context *ctx)
> >   
> >   	nxp_c45_select_secy(phydev, phy_secy->secy_id);
> >   
> > -	if (tx_sa->is_enabled)
> > +	if (tx_sa->is_enabled) {
> >   		nxp_c45_update_key_status(phydev, tx_sa);
> > +		nxp_c45_tx_sa_stats_clear(phydev, tx_sa);
>
> If the TXSA was already disabled (via mdo_upd_txsa), don't you need to
> clear the stats as well?

Yes, I will clear them.

> [...]
> > +static int nxp_c45_mdo_get_tx_sc_stats(struct macsec_context *ctx)
> > +{
> [...]
> > +	nxp_c45_macsec_read(phydev, MACSEC_OOE1HS, &reg);
> > +	stat = (u64)reg << 32;
> > +	nxp_c45_macsec_read(phydev, MACSEC_OOE2HS, &reg);
> > +	stat |= reg;
> > +	if (ctx->secy->tx_sc.encrypt)
> > +		tx_sc_stats->OutOctetsEncrypted = stat;
> > +	else
> > +		tx_sc_stats->OutOctetsEncrypted = 0;
> > +
> > +	if (ctx->secy->protect_frames)
> > +		tx_sc_stats->OutOctetsProtected = stat;
> > +	else
> > +		tx_sc_stats->OutOctetsProtected = 0;
>
> This doesn't look consistent with macsec_count_tx
> (drivers/net/macsec.c).

Actually OutOctetsProtected register is not read from the hardware.

--
Radu P.