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Message-Id: <20231005180636.672791-3-radu-nicolae.pirea@oss.nxp.com> Date: Thu, 5 Oct 2023 21:06:34 +0300 From: "Radu Pirea (NXP OSS)" <radu-nicolae.pirea@....nxp.com> To: linux-kernel@...r.kernel.org, netdev@...r.kernel.org, linux-rdma@...r.kernel.org Cc: sgoutham@...vell.com, gakula@...vell.com, sbhatta@...vell.com, hkelam@...vell.com, davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com, borisp@...dia.com, saeedm@...dia.com, leon@...nel.org, sd@...asysnail.net, andrew@...n.ch, hkallweit1@...il.com, linux@...linux.org.uk, richardcochran@...il.com, sebastian.tobuschat@....nxp.com, phaddad@...dia.com, ehakim@...dia.com, raeds@...dia.com, atenart@...nel.org, "Radu Pirea (NXP OSS)" <radu-nicolae.pirea@....nxp.com> Subject: [PATCH net v7 2/4] octeontx2-pf: mcs: update PN only when update_pn is true 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: c54ffc73601c ("octeontx2-pf: mcs: Introduce MACSEC hardware offloading") Signed-off-by: Radu Pirea (NXP OSS) <radu-nicolae.pirea@....nxp.com> --- Changes in v7: - fixed update_pn check in cn10k_mdo_upd_txsa Changes in v6: - patch added in v6 .../ethernet/marvell/octeontx2/nic/cn10k_macsec.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/cn10k_macsec.c b/drivers/net/ethernet/marvell/octeontx2/nic/cn10k_macsec.c index 59b138214af2..6cc7a78968fc 100644 --- a/drivers/net/ethernet/marvell/octeontx2/nic/cn10k_macsec.c +++ b/drivers/net/ethernet/marvell/octeontx2/nic/cn10k_macsec.c @@ -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) -- 2.34.1
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