[RFC net-next v4 6/7] net: phy: nxp-c45-tja11xx: add MACsec statistics
From: Radu Pirea (NXP OSS)
Date: Wed Sep 13 2023 - 09:32:42 EST
Add MACsec statistics callbacks.
The statistic registers must be set to 0 if the SC/SA is
deleted to read relevant values next time when the SC/SA is used.
Signed-off-by: Radu Pirea (NXP OSS) <radu-nicolae.pirea@xxxxxxxxxxx>
---
Changes in v4:
- Added nxp_c45_macsec_read32_64 function to read 32b counters into u64
variables.
- Added nxp_c45_macsec_read64 function to read 64b counters.
Changes in v3:
- reworked the implementation around struct nxp_c45_sa
- changed the way how OutOctetsEncrypted are propagated to the userspace
- changed the way how OutOctetsProtected are propagated to the userspace
- read and clear OutOctetsProtected
Changes in v2:
- split the patch from "net: phy: nxp-c45-tja11xx: add MACsec support"
drivers/net/phy/nxp-c45-tja11xx-macsec.c | 345 +++++++++++++++++++++++
1 file changed, 345 insertions(+)
diff --git a/drivers/net/phy/nxp-c45-tja11xx-macsec.c b/drivers/net/phy/nxp-c45-tja11xx-macsec.c
index fb7f1cb62a6e..3634b6cedf24 100644
--- a/drivers/net/phy/nxp-c45-tja11xx-macsec.c
+++ b/drivers/net/phy/nxp-c45-tja11xx-macsec.c
@@ -137,6 +137,35 @@
#define ADAPTER_EN BIT(6)
#define MACSEC_EN BIT(5)
+#define MACSEC_INOV1HS 0x0140
+#define MACSEC_INOV2HS 0x0144
+#define MACSEC_INOD1HS 0x0148
+#define MACSEC_INOD2HS 0x014C
+#define MACSEC_RXSCIPUS 0x0150
+#define MACSEC_RXSCIPDS 0x0154
+#define MACSEC_RXSCIPLS 0x0158
+#define MACSEC_RXAN0INUSS 0x0160
+#define MACSEC_RXAN0IPUSS 0x0170
+#define MACSEC_RXSA_A_IPOS 0x0194
+#define MACSEC_RXSA_A_IPIS 0x01B0
+#define MACSEC_RXSA_A_IPNVS 0x01B4
+#define MACSEC_RXSA_B_IPOS 0x01D4
+#define MACSEC_RXSA_B_IPIS 0x01F0
+#define MACSEC_RXSA_B_IPNVS 0x01F4
+#define MACSEC_OPUS 0x021C
+#define MACSEC_OPTLS 0x022C
+#define MACSEC_OOP1HS 0x0240
+#define MACSEC_OOP2HS 0x0244
+#define MACSEC_OOE1HS 0x0248
+#define MACSEC_OOE2HS 0x024C
+#define MACSEC_TXSA_A_OPPS 0x028C
+#define MACSEC_TXSA_A_OPES 0x0290
+#define MACSEC_TXSA_B_OPPS 0x02CC
+#define MACSEC_TXSA_B_OPES 0x02D0
+#define MACSEC_INPWTS 0x0630
+#define MACSEC_INPBTS 0x0638
+#define MACSEC_IPSNFS 0x063C
+
enum nxp_c45_sa_type {
TX_SA,
RX_SA,
@@ -175,6 +204,11 @@ struct nxp_c45_sa_regs {
u16 ka;
u16 ssci;
u16 salt;
+ u16 ipis;
+ u16 ipnvs;
+ u16 ipos;
+ u16 opps;
+ u16 opes;
};
static const struct nxp_c45_sa_regs rx_sa_a_regs = {
@@ -186,6 +220,9 @@ static const struct nxp_c45_sa_regs rx_sa_a_regs = {
.ka = MACSEC_RXSA_A_KA,
.ssci = MACSEC_RXSA_A_SSCI,
.salt = MACSEC_RXSA_A_SALT,
+ .ipis = MACSEC_RXSA_A_IPIS,
+ .ipnvs = MACSEC_RXSA_A_IPNVS,
+ .ipos = MACSEC_RXSA_A_IPOS,
};
static const struct nxp_c45_sa_regs rx_sa_b_regs = {
@@ -197,6 +234,9 @@ static const struct nxp_c45_sa_regs rx_sa_b_regs = {
.ka = MACSEC_RXSA_B_KA,
.ssci = MACSEC_RXSA_B_SSCI,
.salt = MACSEC_RXSA_B_SALT,
+ .ipis = MACSEC_RXSA_B_IPIS,
+ .ipnvs = MACSEC_RXSA_B_IPNVS,
+ .ipos = MACSEC_RXSA_B_IPOS,
};
static const struct nxp_c45_sa_regs tx_sa_a_regs = {
@@ -206,6 +246,8 @@ static const struct nxp_c45_sa_regs tx_sa_a_regs = {
.ka = MACSEC_TXSA_A_KA,
.ssci = MACSEC_TXSA_A_SSCI,
.salt = MACSEC_TXSA_A_SALT,
+ .opps = MACSEC_TXSA_A_OPPS,
+ .opes = MACSEC_TXSA_A_OPES,
};
static const struct nxp_c45_sa_regs tx_sa_b_regs = {
@@ -215,6 +257,8 @@ static const struct nxp_c45_sa_regs tx_sa_b_regs = {
.ka = MACSEC_TXSA_B_KA,
.ssci = MACSEC_TXSA_B_SSCI,
.salt = MACSEC_TXSA_B_SALT,
+ .opps = MACSEC_TXSA_B_OPPS,
+ .opes = MACSEC_TXSA_B_OPES,
};
static const
@@ -284,6 +328,26 @@ static int nxp_c45_macsec_read(struct phy_device *phydev, u16 addr, u32 *value)
return 0;
}
+static void nxp_c45_macsec_read32_64(struct phy_device *phydev, u16 addr,
+ u64 *value)
+{
+ u32 lvalue;
+
+ nxp_c45_macsec_read(phydev, addr, &lvalue);
+ *value = lvalue;
+}
+
+static void nxp_c45_macsec_read64(struct phy_device *phydev, u16 addr,
+ u64 *value)
+{
+ u32 lvalue;
+
+ nxp_c45_macsec_read(phydev, addr, &lvalue);
+ *value = (u64)lvalue << 32;
+ nxp_c45_macsec_read(phydev, addr + 4, &lvalue);
+ *value |= lvalue;
+}
+
static struct nxp_c45_secy *nxp_c45_find_secy(struct list_head *secy_list,
sci_t sci)
{
@@ -419,6 +483,41 @@ static void nxp_c45_sa_set_key(struct macsec_context *ctx,
nxp_c45_macsec_write(ctx->phydev, sa_regs->cs, MACSEC_SA_CS_A);
}
+static void nxp_c45_rx_sa_clear_stats(struct phy_device *phydev,
+ struct nxp_c45_sa *sa)
+{
+ nxp_c45_macsec_write(phydev, sa->regs->ipis, 0);
+ nxp_c45_macsec_write(phydev, sa->regs->ipnvs, 0);
+ nxp_c45_macsec_write(phydev, sa->regs->ipos, 0);
+
+ nxp_c45_macsec_write(phydev, MACSEC_RXAN0INUSS + sa->an * 4, 0);
+ nxp_c45_macsec_write(phydev, MACSEC_RXAN0IPUSS + sa->an * 4, 0);
+}
+
+static void nxp_c45_rx_sa_read_stats(struct phy_device *phydev,
+ struct nxp_c45_sa *sa,
+ struct macsec_rx_sa_stats *stats)
+{
+ nxp_c45_macsec_read(phydev, sa->regs->ipis, &stats->InPktsInvalid);
+ nxp_c45_macsec_read(phydev, sa->regs->ipnvs, &stats->InPktsNotValid);
+ nxp_c45_macsec_read(phydev, sa->regs->ipos, &stats->InPktsOK);
+}
+
+static void nxp_c45_tx_sa_clear_stats(struct phy_device *phydev,
+ struct nxp_c45_sa *sa)
+{
+ nxp_c45_macsec_write(phydev, sa->regs->opps, 0);
+ nxp_c45_macsec_write(phydev, sa->regs->opes, 0);
+}
+
+static void nxp_c45_tx_sa_read_stats(struct phy_device *phydev,
+ struct nxp_c45_sa *sa,
+ struct macsec_tx_sa_stats *stats)
+{
+ nxp_c45_macsec_read(phydev, sa->regs->opps, &stats->OutPktsProtected);
+ nxp_c45_macsec_read(phydev, sa->regs->opes, &stats->OutPktsEncrypted);
+}
+
static void nxp_c45_rx_sa_update(struct phy_device *phydev,
struct nxp_c45_sa *sa, bool en)
{
@@ -633,6 +732,23 @@ static void nxp_c45_tx_sc_update(struct phy_device *phydev,
nxp_c45_macsec_write(phydev, MACSEC_TXSC_CFG, cfg);
}
+static void nxp_c45_tx_sc_clear_stats(struct phy_device *phydev,
+ struct nxp_c45_secy *phy_secy)
+{
+ struct nxp_c45_sa *pos, *tmp;
+
+ list_for_each_entry_safe(pos, tmp, &phy_secy->sa_list, list)
+ if (pos->type == TX_SA)
+ nxp_c45_tx_sa_clear_stats(phydev, pos);
+
+ nxp_c45_macsec_write(phydev, MACSEC_OPUS, 0);
+ nxp_c45_macsec_write(phydev, MACSEC_OPTLS, 0);
+ nxp_c45_macsec_write(phydev, MACSEC_OOP1HS, 0);
+ nxp_c45_macsec_write(phydev, MACSEC_OOP2HS, 0);
+ nxp_c45_macsec_write(phydev, MACSEC_OOE1HS, 0);
+ nxp_c45_macsec_write(phydev, MACSEC_OOE2HS, 0);
+}
+
static void nxp_c45_set_rx_sc0_impl(struct phy_device *phydev,
bool enable)
{
@@ -722,6 +838,32 @@ static void nxp_c45_rx_sc_update(struct phy_device *phydev,
nxp_c45_macsec_write(phydev, MACSEC_RXSC_CFG, cfg);
}
+static void nxp_c45_rx_sc_clear_stats(struct phy_device *phydev,
+ struct nxp_c45_secy *phy_secy)
+{
+ struct nxp_c45_sa *pos, *tmp;
+ int i;
+
+ list_for_each_entry_safe(pos, tmp, &phy_secy->sa_list, list)
+ if (pos->type == RX_SA)
+ nxp_c45_rx_sa_clear_stats(phydev, pos);
+
+ nxp_c45_macsec_write(phydev, MACSEC_INOD1HS, 0);
+ nxp_c45_macsec_write(phydev, MACSEC_INOD2HS, 0);
+
+ nxp_c45_macsec_write(phydev, MACSEC_INOV1HS, 0);
+ nxp_c45_macsec_write(phydev, MACSEC_INOV2HS, 0);
+
+ nxp_c45_macsec_write(phydev, MACSEC_RXSCIPDS, 0);
+ nxp_c45_macsec_write(phydev, MACSEC_RXSCIPLS, 0);
+ nxp_c45_macsec_write(phydev, MACSEC_RXSCIPUS, 0);
+
+ for (i = 0; i < MACSEC_NUM_AN; i++) {
+ nxp_c45_macsec_write(phydev, MACSEC_RXAN0INUSS + i * 4, 0);
+ nxp_c45_macsec_write(phydev, MACSEC_RXAN0IPUSS + i * 4, 0);
+ }
+}
+
static void nxp_c45_rx_sc_del(struct phy_device *phydev,
struct nxp_c45_secy *phy_secy)
{
@@ -731,11 +873,20 @@ static void nxp_c45_rx_sc_del(struct phy_device *phydev,
nxp_c45_macsec_write(phydev, MACSEC_RPW, 0);
nxp_c45_set_sci(phydev, MACSEC_RXSC_SCI_1H, 0);
+ nxp_c45_rx_sc_clear_stats(phydev, phy_secy);
+
list_for_each_entry_safe(pos, tmp, &phy_secy->sa_list, list)
if (pos->type == RX_SA)
nxp_c45_rx_sa_update(phydev, pos, false);
}
+static void nxp_c45_clear_global_stats(struct phy_device *phydev)
+{
+ nxp_c45_macsec_write(phydev, MACSEC_INPBTS, 0);
+ nxp_c45_macsec_write(phydev, MACSEC_INPWTS, 0);
+ nxp_c45_macsec_write(phydev, MACSEC_IPSNFS, 0);
+}
+
static void nxp_c45_macsec_en(struct phy_device *phydev, bool en)
{
u32 reg;
@@ -932,6 +1083,7 @@ static int nxp_c45_mdo_del_secy(struct macsec_context *ctx)
nxp_c45_mdo_dev_stop(ctx);
nxp_c45_tx_sa_next(phy_secy, &next_sa, encoding_sa);
nxp_c45_tx_sa_update(phydev, &next_sa, false);
+ nxp_c45_tx_sc_clear_stats(phydev, phy_secy);
if (phy_secy->rx_sc)
nxp_c45_rx_sc_del(phydev, phy_secy);
@@ -945,6 +1097,9 @@ static int nxp_c45_mdo_del_secy(struct macsec_context *ctx)
clear_bit(phy_secy->secy_id, priv->macsec->tx_sc_bitmap);
nxp_c45_secy_free(phy_secy);
+ if (list_empty(&priv->macsec->secy_list))
+ nxp_c45_clear_global_stats(phydev);
+
return 0;
}
@@ -1102,6 +1257,7 @@ static int nxp_c45_mdo_del_rxsa(struct macsec_context *ctx)
nxp_c45_select_secy(phydev, phy_secy->secy_id);
nxp_c45_rx_sa_update(phydev, sa, false);
+ nxp_c45_rx_sa_clear_stats(phydev, sa);
nxp_c45_sa_free(sa);
@@ -1191,12 +1347,196 @@ static int nxp_c45_mdo_del_txsa(struct macsec_context *ctx)
nxp_c45_select_secy(phydev, phy_secy->secy_id);
if (ctx->secy->tx_sc.encoding_sa == sa->an)
nxp_c45_tx_sa_update(phydev, sa, false);
+ nxp_c45_tx_sa_clear_stats(phydev, sa);
nxp_c45_sa_free(sa);
return 0;
}
+static int nxp_c45_mdo_get_dev_stats(struct macsec_context *ctx)
+{
+ struct phy_device *phydev = ctx->phydev;
+ struct nxp_c45_phy *priv = phydev->priv;
+ struct macsec_dev_stats *dev_stats;
+ struct nxp_c45_secy *phy_secy;
+
+ phy_secy = nxp_c45_find_secy(&priv->macsec->secy_list, ctx->secy->sci);
+ if (IS_ERR(phy_secy))
+ return PTR_ERR(phy_secy);
+
+ dev_stats = ctx->stats.dev_stats;
+ nxp_c45_select_secy(phydev, phy_secy->secy_id);
+
+ nxp_c45_macsec_read32_64(phydev, MACSEC_OPUS,
+ &dev_stats->OutPktsUntagged);
+ nxp_c45_macsec_read32_64(phydev, MACSEC_OPTLS,
+ &dev_stats->OutPktsTooLong);
+ nxp_c45_macsec_read32_64(phydev, MACSEC_INPBTS,
+ &dev_stats->InPktsBadTag);
+
+ if (phy_secy->secy->validate_frames == MACSEC_VALIDATE_STRICT)
+ nxp_c45_macsec_read32_64(phydev, MACSEC_INPWTS,
+ &dev_stats->InPktsNoTag);
+ else
+ nxp_c45_macsec_read32_64(phydev, MACSEC_INPWTS,
+ &dev_stats->InPktsUntagged);
+
+ if (phy_secy->secy->validate_frames == MACSEC_VALIDATE_STRICT)
+ nxp_c45_macsec_read32_64(phydev, MACSEC_IPSNFS,
+ &dev_stats->InPktsNoSCI);
+ else
+ nxp_c45_macsec_read32_64(phydev, MACSEC_IPSNFS,
+ &dev_stats->InPktsUnknownSCI);
+
+ /* Always 0. */
+ dev_stats->InPktsOverrun = 0;
+
+ return 0;
+}
+
+static int nxp_c45_mdo_get_tx_sc_stats(struct macsec_context *ctx)
+{
+ struct phy_device *phydev = ctx->phydev;
+ struct nxp_c45_phy *priv = phydev->priv;
+ struct macsec_tx_sa_stats tx_sa_stats;
+ struct macsec_tx_sc_stats *stats;
+ struct nxp_c45_secy *phy_secy;
+ struct nxp_c45_sa *pos, *tmp;
+
+ phy_secy = nxp_c45_find_secy(&priv->macsec->secy_list, ctx->secy->sci);
+ if (IS_ERR(phy_secy))
+ return PTR_ERR(phy_secy);
+
+ stats = ctx->stats.tx_sc_stats;
+ nxp_c45_select_secy(phydev, phy_secy->secy_id);
+
+ nxp_c45_macsec_read64(phydev, MACSEC_OOE1HS,
+ &stats->OutOctetsEncrypted);
+ nxp_c45_macsec_read64(phydev, MACSEC_OOP1HS,
+ &stats->OutOctetsProtected);
+ list_for_each_entry_safe(pos, tmp, &phy_secy->sa_list, list) {
+ if (pos->type != TX_SA)
+ continue;
+
+ memset(&tx_sa_stats, 0, sizeof(tx_sa_stats));
+ nxp_c45_tx_sa_read_stats(phydev, pos, &tx_sa_stats);
+
+ stats->OutPktsEncrypted += tx_sa_stats.OutPktsEncrypted;
+ stats->OutPktsProtected += tx_sa_stats.OutPktsProtected;
+ }
+
+ return 0;
+}
+
+static int nxp_c45_mdo_get_tx_sa_stats(struct macsec_context *ctx)
+{
+ struct phy_device *phydev = ctx->phydev;
+ struct nxp_c45_phy *priv = phydev->priv;
+ struct macsec_tx_sa_stats *stats;
+ struct nxp_c45_secy *phy_secy;
+ u8 an = ctx->sa.assoc_num;
+ struct nxp_c45_sa *sa;
+
+ phy_secy = nxp_c45_find_secy(&priv->macsec->secy_list, ctx->secy->sci);
+ if (IS_ERR(phy_secy))
+ return PTR_ERR(phy_secy);
+
+ sa = nxp_c45_find_sa(&phy_secy->sa_list, TX_SA, an);
+ if (IS_ERR(sa))
+ return PTR_ERR(sa);
+
+ stats = ctx->stats.tx_sa_stats;
+ nxp_c45_select_secy(phydev, phy_secy->secy_id);
+ nxp_c45_tx_sa_read_stats(phydev, sa, stats);
+
+ return 0;
+}
+
+static int nxp_c45_mdo_get_rx_sc_stats(struct macsec_context *ctx)
+{
+ struct phy_device *phydev = ctx->phydev;
+ struct nxp_c45_phy *priv = phydev->priv;
+ struct macsec_rx_sa_stats rx_sa_stats;
+ struct macsec_rx_sc_stats *stats;
+ struct nxp_c45_secy *phy_secy;
+ struct nxp_c45_sa *pos, *tmp;
+ u32 reg = 0;
+ int i;
+
+ phy_secy = nxp_c45_find_secy(&priv->macsec->secy_list, ctx->secy->sci);
+ if (IS_ERR(phy_secy))
+ return PTR_ERR(phy_secy);
+
+ if (phy_secy->rx_sc != ctx->rx_sc)
+ return -EINVAL;
+
+ stats = ctx->stats.rx_sc_stats;
+ nxp_c45_select_secy(phydev, phy_secy->secy_id);
+
+ list_for_each_entry_safe(pos, tmp, &phy_secy->sa_list, list) {
+ if (pos->type != RX_SA)
+ continue;
+
+ memset(&rx_sa_stats, 0, sizeof(rx_sa_stats));
+ nxp_c45_rx_sa_read_stats(phydev, pos, &rx_sa_stats);
+
+ stats->InPktsInvalid += rx_sa_stats.InPktsInvalid;
+ stats->InPktsNotValid += rx_sa_stats.InPktsNotValid;
+ stats->InPktsOK += rx_sa_stats.InPktsOK;
+ }
+
+ for (i = 0; i < MACSEC_NUM_AN; i++) {
+ nxp_c45_macsec_read(phydev, MACSEC_RXAN0INUSS + i * 4, ®);
+ stats->InPktsNotUsingSA += reg;
+ nxp_c45_macsec_read(phydev, MACSEC_RXAN0IPUSS + i * 4, ®);
+ stats->InPktsUnusedSA += reg;
+ }
+
+ nxp_c45_macsec_read64(phydev, MACSEC_INOD1HS,
+ &stats->InOctetsDecrypted);
+ nxp_c45_macsec_read64(phydev, MACSEC_INOV1HS,
+ &stats->InOctetsValidated);
+
+ nxp_c45_macsec_read32_64(phydev, MACSEC_RXSCIPDS,
+ &stats->InPktsDelayed);
+ nxp_c45_macsec_read32_64(phydev, MACSEC_RXSCIPLS,
+ &stats->InPktsLate);
+ nxp_c45_macsec_read32_64(phydev, MACSEC_RXSCIPUS,
+ &stats->InPktsUnchecked);
+
+ return 0;
+}
+
+static int nxp_c45_mdo_get_rx_sa_stats(struct macsec_context *ctx)
+{
+ struct phy_device *phydev = ctx->phydev;
+ struct nxp_c45_phy *priv = phydev->priv;
+ struct macsec_rx_sa_stats *stats;
+ struct nxp_c45_secy *phy_secy;
+ u8 an = ctx->sa.assoc_num;
+ struct nxp_c45_sa *sa;
+
+ phy_secy = nxp_c45_find_secy(&priv->macsec->secy_list, ctx->secy->sci);
+ if (IS_ERR(phy_secy))
+ return PTR_ERR(phy_secy);
+
+ sa = nxp_c45_find_sa(&phy_secy->sa_list, RX_SA, an);
+ if (IS_ERR(sa))
+ return PTR_ERR(sa);
+
+ stats = ctx->stats.rx_sa_stats;
+ nxp_c45_select_secy(phydev, phy_secy->secy_id);
+
+ nxp_c45_rx_sa_read_stats(phydev, sa, stats);
+ nxp_c45_macsec_read(phydev, MACSEC_RXAN0INUSS + an * 4,
+ &stats->InPktsNotUsingSA);
+ nxp_c45_macsec_read(phydev, MACSEC_RXAN0IPUSS + an * 4,
+ &stats->InPktsUnusedSA);
+
+ return 0;
+}
+
static const struct macsec_ops nxp_c45_macsec_ops = {
.mdo_dev_open = nxp_c45_mdo_dev_open,
.mdo_dev_stop = nxp_c45_mdo_dev_stop,
@@ -1212,6 +1552,11 @@ static const struct macsec_ops nxp_c45_macsec_ops = {
.mdo_add_txsa = nxp_c45_mdo_add_txsa,
.mdo_upd_txsa = nxp_c45_mdo_upd_txsa,
.mdo_del_txsa = nxp_c45_mdo_del_txsa,
+ .mdo_get_dev_stats = nxp_c45_mdo_get_dev_stats,
+ .mdo_get_tx_sc_stats = nxp_c45_mdo_get_tx_sc_stats,
+ .mdo_get_tx_sa_stats = nxp_c45_mdo_get_tx_sa_stats,
+ .mdo_get_rx_sc_stats = nxp_c45_mdo_get_rx_sc_stats,
+ .mdo_get_rx_sa_stats = nxp_c45_mdo_get_rx_sa_stats,
};
int nxp_c45_macsec_config_init(struct phy_device *phydev)
--
2.34.1