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From 909c1b9835ecc9c115980e9827a9313c17dab22b Mon Sep 17 00:00:00 2001
Message-Id: <909c1b9835ecc9c115980e9827a9313c17dab22b.1488376601.git.dcaratti@redhat.com>
From: Sabrina Dubroca <sd@queasysnail.net>
Date: Tue, 20 Sep 2016 09:43:07 +0200
Subject: [PATCH] mka: Pass full structures down to macsec drivers' transmit SA
 ops

Clean up the driver interface by passing pointers to struct transmit_sa
down the stack to the {create,enable,disable}_transmit_sa ops, instead
of passing the individual properties of the SA.

Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
---
 src/drivers/driver.h            | 20 ++++++--------------
 src/drivers/driver_macsec_qca.c | 39 +++++++++++++++++++++++----------------
 src/pae/ieee802_1x_kay.h        |  7 +++----
 src/pae/ieee802_1x_secy_ops.c   |  8 +++-----
 wpa_supplicant/driver_i.h       | 16 ++++++----------
 wpa_supplicant/wpas_kay.c       | 15 ++++++---------
 6 files changed, 47 insertions(+), 58 deletions(-)

diff --git a/src/drivers/driver.h b/src/drivers/driver.h
index 2c7ce6c..bb2d1d2 100644
--- a/src/drivers/driver.h
+++ b/src/drivers/driver.h
@@ -3448,34 +3448,26 @@ struct wpa_driver_ops {
 	/**
 	 * create_transmit_sa - create secure association for transmit
 	 * @priv: private driver interface data from init()
-	 * @channel: secure channel index
-	 * @an: association number
-	 * @next_pn: the packet number used as next transmit packet
-	 * @confidentiality: True if the SA is to provide confidentiality
-	 *                   as well as integrity
-	 * @sak: the secure association key
+	 * @sa: secure association
 	 * Returns: 0 on success, -1 on failure
 	 */
-	int (*create_transmit_sa)(void *priv, u32 channel, u8 an, u32 next_pn,
-				  Boolean confidentiality, const u8 *sak);
+	int (*create_transmit_sa)(void *priv, struct transmit_sa *sa);
 
 	/**
 	 * enable_transmit_sa - enable SA for transmit
 	 * @priv: private driver interface data from init()
-	 * @channel: secure channel
-	 * @an: association number
+	 * @sa: secure association
 	 * Returns: 0 on success, -1 on failure
 	 */
-	int (*enable_transmit_sa)(void *priv, u32 channel, u8 an);
+	int (*enable_transmit_sa)(void *priv, struct transmit_sa *sa);
 
 	/**
 	 * disable_transmit_sa - disable SA for transmit
 	 * @priv: private driver interface data from init()
-	 * @channel: secure channel
-	 * @an: association number
+	 * @sa: secure association
 	 * Returns: 0 on success, -1 on failure
 	 */
-	int (*disable_transmit_sa)(void *priv, u32 channel, u8 an);
+	int (*disable_transmit_sa)(void *priv, struct transmit_sa *sa);
 #endif /* CONFIG_MACSEC */
 
 	/**
diff --git a/src/drivers/driver_macsec_qca.c b/src/drivers/driver_macsec_qca.c
index 95f1e27..9bfc9a4 100644
--- a/src/drivers/driver_macsec_qca.c
+++ b/src/drivers/driver_macsec_qca.c
@@ -794,19 +794,18 @@ static int macsec_qca_delete_transmit_sc(void *priv, u32 channel)
 }
 
 
-static int macsec_qca_create_transmit_sa(void *priv, u32 channel, u8 an,
-					 u32 next_pn, Boolean confidentiality,
-					 const u8 *sak)
+static int macsec_qca_create_transmit_sa(void *priv, struct transmit_sa *sa)
 {
 	struct macsec_qca_data *drv = priv;
 	int ret = 0;
 	u8 tci = 0;
 	fal_tx_sak_t tx_sak;
 	int i;
+	u32 channel = sa->sc->channel;
 
 	wpa_printf(MSG_DEBUG,
 		   "%s: channel=%d, an=%d, next_pn=0x%x, confidentiality=%d",
-		   __func__, channel, an, next_pn, confidentiality);
+		   __func__, channel, sa->an, sa->next_pn, sa->confidentiality);
 
 	if (drv->always_include_sci)
 		tci |= TCI_SC;
@@ -815,45 +814,53 @@ static int macsec_qca_create_transmit_sa(void *priv, u32 channel, u8 an,
 	else if (drv->use_scb)
 		tci |= TCI_SCB;
 
-	if (confidentiality)
+	if (sa->confidentiality)
 		tci |= TCI_E | TCI_C;
 
 	os_memset(&tx_sak, 0, sizeof(tx_sak));
 	for (i = 0; i < 16; i++)
-		tx_sak.sak[i] = sak[15 - i];
+		tx_sak.sak[i] = sa->pkey->key[15 - i];
 
-	ret += nss_macsec_secy_tx_sa_next_pn_set(drv->secy_id, channel, an,
-						 next_pn);
-	ret += nss_macsec_secy_tx_sak_set(drv->secy_id, channel, an, &tx_sak);
+	ret += nss_macsec_secy_tx_sa_next_pn_set(drv->secy_id, channel, sa->an,
+						 sa->next_pn);
+	ret += nss_macsec_secy_tx_sak_set(drv->secy_id, channel, sa->an,
+					  &tx_sak);
 	ret += nss_macsec_secy_tx_sc_tci_7_2_set(drv->secy_id, channel,
 						 (tci >> 2));
-	ret += nss_macsec_secy_tx_sc_an_set(drv->secy_id, channel, an);
+	ret += nss_macsec_secy_tx_sc_an_set(drv->secy_id, channel, sa->an);
 
 	return ret;
 }
 
 
-static int macsec_qca_enable_transmit_sa(void *priv, u32 channel, u8 an)
+static int macsec_qca_enable_transmit_sa(void *priv, struct transmit_sa *sa)
 {
 	struct macsec_qca_data *drv = priv;
 	int ret = 0;
+	u32 channel = sa->sc->channel;
 
-	wpa_printf(MSG_DEBUG, "%s: channel=%d, an=%d", __func__, channel, an);
 
-	ret += nss_macsec_secy_tx_sa_en_set(drv->secy_id, channel, an, TRUE);
+	wpa_printf(MSG_DEBUG, "%s: channel=%d, an=%d", __func__, channel,
+		   sa->an);
+
+	ret += nss_macsec_secy_tx_sa_en_set(drv->secy_id, channel, sa->an,
+					    TRUE);
 
 	return ret;
 }
 
 
-static int macsec_qca_disable_transmit_sa(void *priv, u32 channel, u8 an)
+static int macsec_qca_disable_transmit_sa(void *priv, struct transmit_sa *sa)
 {
 	struct macsec_qca_data *drv = priv;
 	int ret = 0;
+	u32 channel = sa->sc->channel;
 
-	wpa_printf(MSG_DEBUG, "%s: channel=%d, an=%d", __func__, channel, an);
+	wpa_printf(MSG_DEBUG, "%s: channel=%d, an=%d", __func__, channel,
+		   sa->an);
 
-	ret += nss_macsec_secy_tx_sa_en_set(drv->secy_id, channel, an, FALSE);
+	ret += nss_macsec_secy_tx_sa_en_set(drv->secy_id, channel, sa->an,
+					    FALSE);
 
 	return ret;
 }
diff --git a/src/pae/ieee802_1x_kay.h b/src/pae/ieee802_1x_kay.h
index a747b11..36a7bd6 100644
--- a/src/pae/ieee802_1x_kay.h
+++ b/src/pae/ieee802_1x_kay.h
@@ -160,10 +160,9 @@ struct ieee802_1x_kay_ctx {
 				  const struct ieee802_1x_mka_sci *sci,
 				  enum confidentiality_offset co);
 	int (*delete_transmit_sc)(void *ctx, u32 channel);
-	int (*create_transmit_sa)(void *ctx, u32 channel, u8 an, u32 next_pn,
-				  Boolean confidentiality, const u8 *sak);
-	int (*enable_transmit_sa)(void *ctx, u32 channel, u8 an);
-	int (*disable_transmit_sa)(void *ctx, u32 channel, u8 an);
+	int (*create_transmit_sa)(void *ctx, struct transmit_sa *sa);
+	int (*enable_transmit_sa)(void *ctx, struct transmit_sa *sa);
+	int (*disable_transmit_sa)(void *ctx, struct transmit_sa *sa);
 };
 
 struct ieee802_1x_kay {
diff --git a/src/pae/ieee802_1x_secy_ops.c b/src/pae/ieee802_1x_secy_ops.c
index d05e00f..8c31ca9 100644
--- a/src/pae/ieee802_1x_secy_ops.c
+++ b/src/pae/ieee802_1x_secy_ops.c
@@ -382,9 +382,7 @@ int secy_create_transmit_sa(struct ieee802_1x_kay *kay,
 		return -1;
 	}
 
-	return ops->create_transmit_sa(ops->ctx, txsa->sc->channel, txsa->an,
-					txsa->next_pn, txsa->confidentiality,
-					txsa->pkey->key);
+	return ops->create_transmit_sa(ops->ctx, txsa);
 }
 
 
@@ -407,7 +405,7 @@ int secy_enable_transmit_sa(struct ieee802_1x_kay *kay,
 
 	txsa->enable_transmit = TRUE;
 
-	return ops->enable_transmit_sa(ops->ctx, txsa->sc->channel, txsa->an);
+	return ops->enable_transmit_sa(ops->ctx, txsa);
 }
 
 
@@ -430,7 +428,7 @@ int secy_disable_transmit_sa(struct ieee802_1x_kay *kay,
 
 	txsa->enable_transmit = FALSE;
 
-	return ops->disable_transmit_sa(ops->ctx, txsa->sc->channel, txsa->an);
+	return ops->disable_transmit_sa(ops->ctx, txsa);
 }
 
 
diff --git a/wpa_supplicant/driver_i.h b/wpa_supplicant/driver_i.h
index 639bb83..e2c2bd7 100644
--- a/wpa_supplicant/driver_i.h
+++ b/wpa_supplicant/driver_i.h
@@ -857,31 +857,27 @@ static inline int wpa_drv_delete_transmit_sc(struct wpa_supplicant *wpa_s,
 }
 
 static inline int wpa_drv_create_transmit_sa(struct wpa_supplicant *wpa_s,
-					     u32 channel, u8 an,
-					     u32 next_pn,
-					     Boolean confidentiality,
-					     const u8 *sak)
+					     struct transmit_sa *sa)
 {
 	if (!wpa_s->driver->create_transmit_sa)
 		return -1;
-	return wpa_s->driver->create_transmit_sa(wpa_s->drv_priv, channel, an,
-						 next_pn, confidentiality, sak);
+	return wpa_s->driver->create_transmit_sa(wpa_s->drv_priv, sa);
 }
 
 static inline int wpa_drv_enable_transmit_sa(struct wpa_supplicant *wpa_s,
-					     u32 channel, u8 an)
+					     struct transmit_sa *sa)
 {
 	if (!wpa_s->driver->enable_transmit_sa)
 		return -1;
-	return wpa_s->driver->enable_transmit_sa(wpa_s->drv_priv, channel, an);
+	return wpa_s->driver->enable_transmit_sa(wpa_s->drv_priv, sa);
 }
 
 static inline int wpa_drv_disable_transmit_sa(struct wpa_supplicant *wpa_s,
-					      u32 channel, u8 an)
+					      struct transmit_sa *sa)
 {
 	if (!wpa_s->driver->disable_transmit_sa)
 		return -1;
-	return wpa_s->driver->disable_transmit_sa(wpa_s->drv_priv, channel, an);
+	return wpa_s->driver->disable_transmit_sa(wpa_s->drv_priv, sa);
 }
 #endif /* CONFIG_MACSEC */
 
diff --git a/wpa_supplicant/wpas_kay.c b/wpa_supplicant/wpas_kay.c
index 306d9f1..4b74112 100644
--- a/wpa_supplicant/wpas_kay.c
+++ b/wpa_supplicant/wpas_kay.c
@@ -159,24 +159,21 @@ static int wpas_delete_transmit_sc(void *wpa_s, u32 channel)
 }
 
 
-static int wpas_create_transmit_sa(void *wpa_s, u32 channel, u8 an,
-				   u32 next_pn, Boolean confidentiality,
-				   const u8 *sak)
+static int wpas_create_transmit_sa(void *wpa_s, struct transmit_sa *sa)
 {
-	return wpa_drv_create_transmit_sa(wpa_s, channel, an, next_pn,
-					  confidentiality, sak);
+	return wpa_drv_create_transmit_sa(wpa_s, sa);
 }
 
 
-static int wpas_enable_transmit_sa(void *wpa_s, u32 channel, u8 an)
+static int wpas_enable_transmit_sa(void *wpa_s, struct transmit_sa *sa)
 {
-	return wpa_drv_enable_transmit_sa(wpa_s, channel, an);
+	return wpa_drv_enable_transmit_sa(wpa_s, sa);
 }
 
 
-static int wpas_disable_transmit_sa(void *wpa_s, u32 channel, u8 an)
+static int wpas_disable_transmit_sa(void *wpa_s, struct transmit_sa *sa)
 {
-	return wpa_drv_disable_transmit_sa(wpa_s, channel, an);
+	return wpa_drv_disable_transmit_sa(wpa_s, sa);
 }
 
 
-- 
2.7.4