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octeontx2-pf: mcs: update PN only when update_pn is true

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When updating SA, update the PN only when the update_pn flag is true.
Otherwise, the PN will be reset to its previous value using the
following command and this should not happen:
$ ip macsec set macsec0 tx sa 0 on

Fixes: c54ffc7360 ("octeontx2-pf: mcs: Introduce MACSEC hardware offloading")
Signed-off-by: Radu Pirea (NXP OSS) <radu-nicolae.pirea@oss.nxp.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Radu Pirea (NXP OSS) 2023-10-05 21:06:34 +03:00 committed by Paolo Abeni
parent 0412cc846a
commit 4dcf38ae3c
1 changed files with 9 additions and 4 deletions
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13
drivers/net/ethernet/marvell/octeontx2/nic/cn10k_macsec.c
View file

@ -1357,10 +1357,12 @@ static int cn10k_mdo_upd_txsa(struct macsec_context *ctx)
if (netif_running(secy->netdev)) {
/* Keys cannot be changed after creation */
err = cn10k_write_tx_sa_pn(pfvf, txsc, sa_num,
sw_tx_sa->next_pn);
if (err)
return err;
if (ctx->sa.update_pn) {
err = cn10k_write_tx_sa_pn(pfvf, txsc, sa_num,
sw_tx_sa->next_pn);
if (err)
return err;
}
err = cn10k_mcs_link_tx_sa2sc(pfvf, secy, txsc,
sa_num, sw_tx_sa->active);
@ -1529,6 +1531,9 @@ static int cn10k_mdo_upd_rxsa(struct macsec_context *ctx)
if (err)
return err;
if (!ctx->sa.update_pn)
return 0;
err = cn10k_mcs_write_rx_sa_pn(pfvf, rxsc, sa_num,
rx_sa->next_pn);
if (err)