netdev - [PATCH net 1/2] net: macsec: update SCI upon MAC address change.

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Date:   Tue, 10 Mar 2020 18:22:24 +0300
From:   Igor Russkikh <irusskikh@...vell.com>
To:     <netdev@...r.kernel.org>
CC:     Mark Starovoytov <mstarovoitov@...vell.com>,
        Sabrina Dubroca <sd@...asysnail.net>,
        Antoine Tenart <antoine.tenart@...tlin.com>,
        "Igor Russkikh" <irusskikh@...vell.com>,
        Dmitry Bogdanov <dbogdanov@...vell.com>
Subject: [PATCH net 1/2] net: macsec: update SCI upon MAC address change.

From: Dmitry Bogdanov <dbogdanov@...vell.com>

SCI should be updated, because it contains MAC in its first 6 octets.

Fixes: c09440f7dcb3 ("macsec: introduce IEEE 802.1AE driver")
Signed-off-by: Dmitry Bogdanov <dbogdanov@...vell.com>
Signed-off-by: Mark Starovoytov <mstarovoitov@...vell.com>
Signed-off-by: Igor Russkikh <irusskikh@...vell.com>
---
 drivers/net/macsec.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c
index 45bfd99f17fa..d8e1d9290c47 100644
--- a/drivers/net/macsec.c
+++ b/drivers/net/macsec.c
@@ -424,6 +424,11 @@ static struct macsec_eth_header *macsec_ethhdr(struct sk_buff *skb)
 	return (struct macsec_eth_header *)skb_mac_header(skb);
 }
 
+static sci_t dev_to_sci(struct net_device *dev, __be16 port)
+{
+	return make_sci(dev->dev_addr, port);
+}
+
 static void __macsec_pn_wrapped(struct macsec_secy *secy,
 				struct macsec_tx_sa *tx_sa)
 {
@@ -3268,6 +3273,7 @@ static int macsec_set_mac_address(struct net_device *dev, void *p)
 
 out:
 	ether_addr_copy(dev->dev_addr, addr->sa_data);
+	macsec->secy.sci = dev_to_sci(dev, MACSEC_PORT_ES);
 	return 0;
 }
 
@@ -3592,11 +3598,6 @@ static bool sci_exists(struct net_device *dev, sci_t sci)
 	return false;
 }
 
-static sci_t dev_to_sci(struct net_device *dev, __be16 port)
-{
-	return make_sci(dev->dev_addr, port);
-}
-
 static int macsec_add_dev(struct net_device *dev, sci_t sci, u8 icv_len)
 {
 	struct macsec_dev *macsec = macsec_priv(dev);
-- 
2.17.1