[PATCH 5.15 076/148] net: bonding: Share lacpdu_mcast_addr definition

Greg Kroah-Hartman
2022-09-26T11:17:38Z

From: Benjamin Poirier <bpoirier@nvidia.com>

[ Upstream commit 1d9a143ee3408349700f44a9197b7ae0e4faae5d ]

There are already a few definitions of arrays containing
MULTICAST_LACPDU_ADDR and the next patch will add one more use. These all
contain the same constant data so define one common instance for all
bonding code.

Signed-off-by: Benjamin Poirier <bpoirier@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: 86247aba599e ("net: bonding: Unsync device addresses on ndo_stop")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/bonding/bond_3ad.c | 5 +++--
drivers/net/bonding/bond_main.c | 16 ++++------------
include/net/bond_3ad.h | 2 --
include/net/bonding.h | 3 +++
4 files changed, 10 insertions(+), 16 deletions(-)

diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c
index 1f0120cbe9e8..8ad095c19f27 100644
--- a/drivers/net/bonding/bond_3ad.c
+++ b/drivers/net/bonding/bond_3ad.c
@@ -87,8 +87,9 @@ static const u8 null_mac_addr[ETH_ALEN + 2] __long_aligned = {
static u16 ad_ticks_per_sec;
static const int ad_delta_in_ticks = (AD_TIMER_INTERVAL * HZ) / 1000;

-static const u8 lacpdu_mcast_addr[ETH_ALEN + 2] __long_aligned =
- MULTICAST_LACPDU_ADDR;
+const u8 lacpdu_mcast_addr[ETH_ALEN + 2] __long_aligned = {
+ 0x01, 0x80, 0xC2, 0x00, 0x00, 0x02
+};

/* ================= main 802.3ad protocol functions ================== */
static int ad_lacpdu_send(struct port *port);
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index cd0d7b24f014..afeb213d02fc 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -862,12 +862,8 @@ static void bond_hw_addr_flush(struct net_device *bond_dev,
dev_uc_unsync(slave_dev, bond_dev);
dev_mc_unsync(slave_dev, bond_dev);

- if (BOND_MODE(bond) == BOND_MODE_8023AD) {
- /* del lacpdu mc addr from mc list */
- u8 lacpdu_multicast[ETH_ALEN] = MULTICAST_LACPDU_ADDR;
-
- dev_mc_del(slave_dev, lacpdu_multicast);
- }
+ if (BOND_MODE(bond) == BOND_MODE_8023AD)
+ dev_mc_del(slave_dev, lacpdu_mcast_addr);
}

/*--------------------------- Active slave change ---------------------------*/
@@ -2139,12 +2135,8 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev,
dev_uc_sync_multiple(slave_dev, bond_dev);
netif_addr_unlock_bh(bond_dev);

- if (BOND_MODE(bond) == BOND_MODE_8023AD) {
- /* add lacpdu mc addr to mc list */
- u8 lacpdu_multicast[ETH_ALEN] = MULTICAST_LACPDU_ADDR;
-
- dev_mc_add(slave_dev, lacpdu_multicast);
- }
+ if (BOND_MODE(bond) == BOND_MODE_8023AD)
+ dev_mc_add(slave_dev, lacpdu_mcast_addr);
}

bond->slave_cnt++;
diff --git a/include/net/bond_3ad.h b/include/net/bond_3ad.h
index 184105d68294..f2273bd5a4c5 100644
--- a/include/net/bond_3ad.h
+++ b/include/net/bond_3ad.h
@@ -15,8 +15,6 @@
#define PKT_TYPE_LACPDU cpu_to_be16(ETH_P_SLOW)
#define AD_TIMER_INTERVAL 100 /*msec*/

-#define MULTICAST_LACPDU_ADDR {0x01, 0x80, 0xC2, 0x00, 0x00, 0x02}
-
#define AD_LACP_SLOW 0
#define AD_LACP_FAST 1

diff --git a/include/net/bonding.h b/include/net/bonding.h
index 15e083e18f75..8c18c6b01634 100644
--- a/include/net/bonding.h
+++ b/include/net/bonding.h
@@ -757,6 +757,9 @@ extern struct rtnl_link_ops bond_link_ops;
/* exported from bond_sysfs_slave.c */
extern const struct sysfs_ops slave_sysfs_ops;

+/* exported from bond_3ad.c */
+extern const u8 lacpdu_mcast_addr[];
+
static inline netdev_tx_t bond_tx_drop(struct net_device *dev, struct sk_buff *skb)
{
atomic_long_inc(&dev->tx_dropped);
--
2.35.1