Merge branch 'net-use-dev_addr_set-in-hamradio-and-ip-tunnels'

Jakub Kicinski says: ==================== net: use dev_addr_set() in hamradio and ip tunnels Commit 406f42f ("net-next: When a bond have a massive amount of VLANs...") introduced a rbtree for faster Ethernet address look up. To maintain netdev->dev_addr in this tree we need to make all the writes to it got through appropriate helpers. ==================== Link: https://lore.kernel.org/r/20211012160634.4152690-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
mariux64 · Oct 13, 2021 · 400f17d · 400f17d
2 parents fe83fe7 + 5a1b7e1
commit 400f17d
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Showing 17 changed files with 26 additions and 28 deletions.
diff --git a/drivers/net/hamradio/6pack.c b/drivers/net/hamradio/6pack.c
@@ -288,7 +288,7 @@ static int sp_set_mac_address(struct net_device *dev, void *addr)
 
 	netif_tx_lock_bh(dev);
 	netif_addr_lock(dev);
-	memcpy(dev->dev_addr, &sa->sax25_call, AX25_ADDR_LEN);
+	__dev_addr_set(dev, &sa->sax25_call, AX25_ADDR_LEN);
 	netif_addr_unlock(dev);
 	netif_tx_unlock_bh(dev);
 
@@ -317,7 +317,7 @@ static void sp_setup(struct net_device *dev)
 
 	/* Only activated in AX.25 mode */
 	memcpy(dev->broadcast, &ax25_bcast, AX25_ADDR_LEN);
-	memcpy(dev->dev_addr, &ax25_defaddr, AX25_ADDR_LEN);
+	dev_addr_set(dev, (u8 *)&ax25_defaddr);
 
 	dev->flags		= 0;
 }
@@ -726,7 +726,7 @@ static int sixpack_ioctl(struct tty_struct *tty, struct file *file,
 			}
 
 			netif_tx_lock_bh(dev);
-			memcpy(dev->dev_addr, &addr, AX25_ADDR_LEN);
+			__dev_addr_set(dev, &addr, AX25_ADDR_LEN);
 			netif_tx_unlock_bh(dev);
 			err = 0;
 			break;

diff --git a/drivers/net/hamradio/baycom_epp.c b/drivers/net/hamradio/baycom_epp.c
@@ -1159,7 +1159,7 @@ static void baycom_probe(struct net_device *dev)
 	dev->mtu = AX25_DEF_PACLEN;        /* eth_mtu is the default */
 	dev->addr_len = AX25_ADDR_LEN;     /* sizeof an ax.25 address */
 	memcpy(dev->broadcast, &ax25_bcast, AX25_ADDR_LEN);
-	memcpy(dev->dev_addr, &null_ax25_address, AX25_ADDR_LEN);
+	dev_addr_set(dev, (u8 *)&null_ax25_address);
 	dev->tx_queue_len = 16;
 
 	/* New style flags */

diff --git a/drivers/net/hamradio/bpqether.c b/drivers/net/hamradio/bpqether.c
@@ -457,9 +457,6 @@ static void bpq_setup(struct net_device *dev)
 	dev->netdev_ops	     = &bpq_netdev_ops;
 	dev->needs_free_netdev = true;
 
-	memcpy(dev->broadcast, &ax25_bcast, AX25_ADDR_LEN);
-	memcpy(dev->dev_addr,  &ax25_defaddr, AX25_ADDR_LEN);
-
 	dev->flags      = 0;
 	dev->features	= NETIF_F_LLTX;	/* Allow recursion */
 
@@ -472,6 +469,8 @@ static void bpq_setup(struct net_device *dev)
 	dev->mtu             = AX25_DEF_PACLEN;
 	dev->addr_len        = AX25_ADDR_LEN;
 
+	memcpy(dev->broadcast, &ax25_bcast, AX25_ADDR_LEN);
+	dev_addr_set(dev, (u8 *)&ax25_defaddr);
 }
 
 /*

diff --git a/drivers/net/hamradio/dmascc.c b/drivers/net/hamradio/dmascc.c
@@ -426,7 +426,7 @@ static void __init dev_setup(struct net_device *dev)
 	dev->addr_len = AX25_ADDR_LEN;
 	dev->tx_queue_len = 64;
 	memcpy(dev->broadcast, &ax25_bcast, AX25_ADDR_LEN);
-	memcpy(dev->dev_addr, &ax25_defaddr, AX25_ADDR_LEN);
+	dev_addr_set(dev, (u8 *)&ax25_defaddr);
 }
 
 static const struct net_device_ops scc_netdev_ops = {

diff --git a/drivers/net/hamradio/hdlcdrv.c b/drivers/net/hamradio/hdlcdrv.c
@@ -675,7 +675,7 @@ static void hdlcdrv_setup(struct net_device *dev)
 	dev->mtu = AX25_DEF_PACLEN;        /* eth_mtu is the default */
 	dev->addr_len = AX25_ADDR_LEN;     /* sizeof an ax.25 address */
 	memcpy(dev->broadcast, &ax25_bcast, AX25_ADDR_LEN);
-	memcpy(dev->dev_addr, &ax25_defaddr, AX25_ADDR_LEN);
+	dev_addr_set(dev, (u8 *)&ax25_defaddr);
 	dev->tx_queue_len = 16;
 }
 

diff --git a/drivers/net/hamradio/mkiss.c b/drivers/net/hamradio/mkiss.c
@@ -344,7 +344,7 @@ static int ax_set_mac_address(struct net_device *dev, void *addr)
 
 	netif_tx_lock_bh(dev);
 	netif_addr_lock(dev);
-	memcpy(dev->dev_addr, &sa->sax25_call, AX25_ADDR_LEN);
+	__dev_addr_set(dev, &sa->sax25_call, AX25_ADDR_LEN);
 	netif_addr_unlock(dev);
 	netif_tx_unlock_bh(dev);
 
@@ -647,7 +647,7 @@ static void ax_setup(struct net_device *dev)
 
 
 	memcpy(dev->broadcast, &ax25_bcast, AX25_ADDR_LEN);
-	memcpy(dev->dev_addr,  &ax25_defaddr,  AX25_ADDR_LEN);
+	dev_addr_set(dev, (u8 *)&ax25_defaddr);
 
 	dev->flags      = IFF_BROADCAST | IFF_MULTICAST;
 }
@@ -850,7 +850,7 @@ static int mkiss_ioctl(struct tty_struct *tty, struct file *file,
 		}
 
 		netif_tx_lock_bh(dev);
-		memcpy(dev->dev_addr, addr, AX25_ADDR_LEN);
+		__dev_addr_set(dev, addr, AX25_ADDR_LEN);
 		netif_tx_unlock_bh(dev);
 
 		err = 0;

diff --git a/drivers/net/hamradio/scc.c b/drivers/net/hamradio/scc.c
@@ -1563,16 +1563,15 @@ static void scc_net_setup(struct net_device *dev)
 	dev->netdev_ops	     = &scc_netdev_ops;
 	dev->header_ops      = &ax25_header_ops;
 
-	memcpy(dev->broadcast, &ax25_bcast,  AX25_ADDR_LEN);
-	memcpy(dev->dev_addr,  &ax25_defaddr, AX25_ADDR_LEN);
-
 	dev->flags      = 0;
 
 	dev->type = ARPHRD_AX25;
 	dev->hard_header_len = AX25_MAX_HEADER_LEN + AX25_BPQ_HEADER_LEN;
 	dev->mtu = AX25_DEF_PACLEN;
 	dev->addr_len = AX25_ADDR_LEN;
 
+	memcpy(dev->broadcast, &ax25_bcast,  AX25_ADDR_LEN);
+	dev_addr_set(dev, (u8 *)&ax25_defaddr);
 }
 
 /* ----> open network device <---- */

diff --git a/drivers/net/hamradio/yam.c b/drivers/net/hamradio/yam.c
@@ -1107,7 +1107,7 @@ static void yam_setup(struct net_device *dev)
 	dev->mtu = AX25_MTU;
 	dev->addr_len = AX25_ADDR_LEN;
 	memcpy(dev->broadcast, &ax25_bcast, AX25_ADDR_LEN);
-	memcpy(dev->dev_addr, &ax25_defaddr, AX25_ADDR_LEN);
+	dev_addr_set(dev, (u8 *)&ax25_defaddr);
 }
 
 static int __init yam_init_driver(void)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
@@ -4643,7 +4643,7 @@ void __hw_addr_init(struct netdev_hw_addr_list *list);
 
 /* Functions used for device addresses handling */
 static inline void
-__dev_addr_set(struct net_device *dev, const u8 *addr, size_t len)
+__dev_addr_set(struct net_device *dev, const void *addr, size_t len)
 {
 	memcpy(dev->dev_addr, addr, len);
 }
@@ -4655,7 +4655,7 @@ static inline void dev_addr_set(struct net_device *dev, const u8 *addr)
 
 static inline void
 dev_addr_mod(struct net_device *dev, unsigned int offset,
-	     const u8 *addr, size_t len)
+	     const void *addr, size_t len)
 {
 	memcpy(&dev->dev_addr[offset], addr, len);
 }

diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
@@ -986,7 +986,7 @@ static int ipgre_tunnel_init(struct net_device *dev)
 
 	__gre_tunnel_init(dev);
 
-	memcpy(dev->dev_addr, &iph->saddr, 4);
+	__dev_addr_set(dev, &iph->saddr, 4);
 	memcpy(dev->broadcast, &iph->daddr, 4);
 
 	dev->flags		= IFF_NOARP;

diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
@@ -834,7 +834,7 @@ static void ip_tunnel_update(struct ip_tunnel_net *itn,
 	t->parms.i_key = p->i_key;
 	t->parms.o_key = p->o_key;
 	if (dev->type != ARPHRD_ETHER) {
-		memcpy(dev->dev_addr, &p->iph.saddr, 4);
+		__dev_addr_set(dev, &p->iph.saddr, 4);
 		memcpy(dev->broadcast, &p->iph.daddr, 4);
 	}
 	ip_tunnel_add(itn, t);

diff --git a/net/ipv4/ip_vti.c b/net/ipv4/ip_vti.c
@@ -425,7 +425,7 @@ static int vti_tunnel_init(struct net_device *dev)
 	struct ip_tunnel *tunnel = netdev_priv(dev);
 	struct iphdr *iph = &tunnel->parms.iph;
 
-	memcpy(dev->dev_addr, &iph->saddr, 4);
+	__dev_addr_set(dev, &iph->saddr, 4);
 	memcpy(dev->broadcast, &iph->daddr, 4);
 
 	dev->flags		= IFF_NOARP;

diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
@@ -380,7 +380,7 @@ static int ipip_tunnel_init(struct net_device *dev)
 {
 	struct ip_tunnel *tunnel = netdev_priv(dev);
 
-	memcpy(dev->dev_addr, &tunnel->parms.iph.saddr, 4);
+	__dev_addr_set(dev, &tunnel->parms.iph.saddr, 4);
 	memcpy(dev->broadcast, &tunnel->parms.iph.daddr, 4);
 
 	tunnel->tun_hlen = 0;

diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
@@ -1088,7 +1088,7 @@ static void ip6gre_tnl_link_config_common(struct ip6_tnl *t)
 	struct flowi6 *fl6 = &t->fl.u.ip6;
 
 	if (dev->type != ARPHRD_ETHER) {
-		memcpy(dev->dev_addr, &p->laddr, sizeof(struct in6_addr));
+		__dev_addr_set(dev, &p->laddr, sizeof(struct in6_addr));
 		memcpy(dev->broadcast, &p->raddr, sizeof(struct in6_addr));
 	}
 
@@ -1521,7 +1521,7 @@ static int ip6gre_tunnel_init(struct net_device *dev)
 	if (tunnel->parms.collect_md)
 		return 0;
 
-	memcpy(dev->dev_addr, &tunnel->parms.laddr, sizeof(struct in6_addr));
+	__dev_addr_set(dev, &tunnel->parms.laddr, sizeof(struct in6_addr));
 	memcpy(dev->broadcast, &tunnel->parms.raddr, sizeof(struct in6_addr));
 
 	if (ipv6_addr_any(&tunnel->parms.raddr))

diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
@@ -1449,7 +1449,7 @@ static void ip6_tnl_link_config(struct ip6_tnl *t)
 	unsigned int mtu;
 	int t_hlen;
 
-	memcpy(dev->dev_addr, &p->laddr, sizeof(struct in6_addr));
+	__dev_addr_set(dev, &p->laddr, sizeof(struct in6_addr));
 	memcpy(dev->broadcast, &p->raddr, sizeof(struct in6_addr));
 
 	/* Set up flowi template */

diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c
@@ -660,7 +660,7 @@ static void vti6_link_config(struct ip6_tnl *t, bool keep_mtu)
 	struct net_device *tdev = NULL;
 	int mtu;
 
-	memcpy(dev->dev_addr, &p->laddr, sizeof(struct in6_addr));
+	__dev_addr_set(dev, &p->laddr, sizeof(struct in6_addr));
 	memcpy(dev->broadcast, &p->raddr, sizeof(struct in6_addr));
 
 	p->flags &= ~(IP6_TNL_F_CAP_XMIT | IP6_TNL_F_CAP_RCV |

diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
@@ -204,7 +204,7 @@ static int ipip6_tunnel_create(struct net_device *dev)
 	struct sit_net *sitn = net_generic(net, sit_net_id);
 	int err;
 
-	memcpy(dev->dev_addr, &t->parms.iph.saddr, 4);
+	__dev_addr_set(dev, &t->parms.iph.saddr, 4);
 	memcpy(dev->broadcast, &t->parms.iph.daddr, 4);
 
 	if ((__force u16)t->parms.i_flags & SIT_ISATAP)
@@ -1149,7 +1149,7 @@ static void ipip6_tunnel_update(struct ip_tunnel *t, struct ip_tunnel_parm *p,
 	synchronize_net();
 	t->parms.iph.saddr = p->iph.saddr;
 	t->parms.iph.daddr = p->iph.daddr;
-	memcpy(t->dev->dev_addr, &p->iph.saddr, 4);
+	__dev_addr_set(t->dev, &p->iph.saddr, 4);
 	memcpy(t->dev->broadcast, &p->iph.daddr, 4);
 	ipip6_tunnel_link(sitn, t);
 	t->parms.iph.ttl = p->iph.ttl;