netdev - [PATCH net-next v7 2/2] macsec: dump IFLA_MACSEC_OFFLOAD attribute as part of macsec dump

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Message-ID: <20230109085557.10633-3-ehakim@nvidia.com>
Date:   Mon, 9 Jan 2023 10:55:57 +0200
From:   <ehakim@...dia.com>
To:     <netdev@...r.kernel.org>
CC:     <raeds@...dia.com>, <davem@...emloft.net>, <edumazet@...gle.com>,
        <kuba@...nel.org>, <pabeni@...hat.com>, <sd@...asysnail.net>,
        <atenart@...nel.org>, Emeel Hakim <ehakim@...dia.com>
Subject: [PATCH net-next v7 2/2] macsec: dump IFLA_MACSEC_OFFLOAD attribute as part of macsec dump

From: Emeel Hakim <ehakim@...dia.com>

Support dumping offload netlink attribute in macsec's device
attributes dump.
Change macsec_get_size to consider the offload attribute in
the calculations of the required room for dumping the device
netlink attributes.

Signed-off-by: Emeel Hakim <ehakim@...dia.com>
---
V1 -> V2: Update commit message
 drivers/net/macsec.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c
index 687d4480b7b3..18dabb4840cb 100644
--- a/drivers/net/macsec.c
+++ b/drivers/net/macsec.c
@@ -4241,16 +4241,22 @@ static size_t macsec_get_size(const struct net_device *dev)
 		nla_total_size(1) + /* IFLA_MACSEC_SCB */
 		nla_total_size(1) + /* IFLA_MACSEC_REPLAY_PROTECT */
 		nla_total_size(1) + /* IFLA_MACSEC_VALIDATION */
+		nla_total_size(1) + /* IFLA_MACSEC_OFFLOAD */
 		0;
 }
 
 static int macsec_fill_info(struct sk_buff *skb,
 			    const struct net_device *dev)
 {
-	struct macsec_secy *secy = &macsec_priv(dev)->secy;
-	struct macsec_tx_sc *tx_sc = &secy->tx_sc;
+	struct macsec_tx_sc *tx_sc;
+	struct macsec_dev *macsec;
+	struct macsec_secy *secy;
 	u64 csid;
 
+	macsec = macsec_priv(dev);
+	secy = &macsec->secy;
+	tx_sc = &secy->tx_sc;
+
 	switch (secy->key_len) {
 	case MACSEC_GCM_AES_128_SAK_LEN:
 		csid = secy->xpn ? MACSEC_CIPHER_ID_GCM_AES_XPN_128 : MACSEC_DEFAULT_CIPHER_ID;
@@ -4275,6 +4281,7 @@ static int macsec_fill_info(struct sk_buff *skb,
 	    nla_put_u8(skb, IFLA_MACSEC_SCB, tx_sc->scb) ||
 	    nla_put_u8(skb, IFLA_MACSEC_REPLAY_PROTECT, secy->replay_protect) ||
 	    nla_put_u8(skb, IFLA_MACSEC_VALIDATION, secy->validate_frames) ||
+	    nla_put_u8(skb, IFLA_MACSEC_OFFLOAD, macsec->offload) ||
 	    0)
 		goto nla_put_failure;
 
-- 
2.21.3