On 8/14/24 11:08, Feng zhou wrote:
From: Feng Zhou <zhoufeng.zf@xxxxxxxxxxxxx>
Cannot attach when an upper device already has a program, This
restriction is only for bond's slave devices, and should not be
accidentally injured for devices like eth0 and vxlan0.
Signed-off-by: Feng Zhou <zhoufeng.zf@xxxxxxxxxxxxx>
---
net/core/dev.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/net/core/dev.c b/net/core/dev.c
index 6ea1d20676fb..e1f87662376a 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -9501,10 +9501,12 @@ static int dev_xdp_attach(struct net_device *dev, struct netlink_ext_ack *extack
}
/* don't allow if an upper device already has a program */
- netdev_for_each_upper_dev_rcu(dev, upper, iter) {
- if (dev_xdp_prog_count(upper) > 0) {
- NL_SET_ERR_MSG(extack, "Cannot attach when an upper device already has a program");
- return -EEXIST;
+ if (netif_is_bond_slave(dev)) {
I think we want to consider even team port devices.
Thanks,
Paolo
