Oh, I just found the subject is incorrect. We want to receive the NS message, not NA message on backup slaves.
Thanks Hangbin On Wed, Feb 05, 2025 at 08:03:35AM +0000, Hangbin Liu wrote:
In order to receive the neighbor solicitation messages on the backup slave, we should add the NS target's corresponding MAC address. But the target in bonding is a unicast addresses. We can't use it directly. Instead, we should convert it to a Solicited-Node Multicast Address first and then convert the multicast address to the right MAC address.
Fixes: 8eb36164d1a6 ("bonding: add ns target multicast address to slave device") Signed-off-by: Hangbin Liu liuhangbin@gmail.com
drivers/net/bonding/bond_options.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/net/bonding/bond_options.c b/drivers/net/bonding/bond_options.c index 327b6ecdc77e..63cf209dcdc9 100644 --- a/drivers/net/bonding/bond_options.c +++ b/drivers/net/bonding/bond_options.c @@ -1246,6 +1246,7 @@ static void slave_set_ns_maddrs(struct bonding *bond, struct slave *slave, bool { struct in6_addr *targets = bond->params.ns_targets; char slot_maddr[MAX_ADDR_LEN];
- struct in6_addr mcaddr; int i;
if (!slave_can_set_ns_maddr(bond, slave)) @@ -1255,7 +1256,8 @@ static void slave_set_ns_maddrs(struct bonding *bond, struct slave *slave, bool if (ipv6_addr_any(&targets[i])) break;
if (!ndisc_mc_map(&targets[i], slot_maddr, slave->dev, 0)) {
addrconf_addr_solict_mult(&targets[i], &mcaddr);if (!ndisc_mc_map(&mcaddr, slot_maddr, slave->dev, 0)) { if (add) dev_mc_add(slave->dev, slot_maddr); else-- 2.39.5 (Apple Git-154)