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Merge tag 'v6.18-rc4-smb-server-fixes' of git://git.samba.org/ksmbd

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Pull smb server fixes from Steve French:

 - More safely detect RDMA capable devices correctly

* tag 'v6.18-rc4-smb-server-fixes' of git://git.samba.org/ksmbd:
  ksmbd: detect RDMA capable netdevs include IPoIB
  ksmbd: detect RDMA capable lower devices when bridge and vlan netdev is used
This commit is contained in:
Linus Torvalds
2025-11-07 07:39:57 -08:00
parent 4a0c9b3391 e6187655ac
commit cff0a1be08
1 changed files with 23 additions and 1 deletions
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24
fs/smb/server/transport_rdma.c
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@@ -2606,7 +2606,7 @@ void ksmbd_rdma_destroy(void)
}
}
bool ksmbd_rdma_capable_netdev(struct net_device *netdev)
static bool ksmbd_find_rdma_capable_netdev(struct net_device *netdev)
{
struct smb_direct_device *smb_dev;
int i;
@@ -2648,6 +2648,28 @@ bool ksmbd_rdma_capable_netdev(struct net_device *netdev)
return rdma_capable;
}
bool ksmbd_rdma_capable_netdev(struct net_device *netdev)
{
struct net_device *lower_dev;
struct list_head *iter;
if (ksmbd_find_rdma_capable_netdev(netdev))
return true;
/* check if netdev is bridge or VLAN */
if (netif_is_bridge_master(netdev) ||
netdev->priv_flags & IFF_802_1Q_VLAN)
netdev_for_each_lower_dev(netdev, lower_dev, iter)
if (ksmbd_find_rdma_capable_netdev(lower_dev))
return true;
/* check if netdev is IPoIB safely without layer violation */
if (netdev->type == ARPHRD_INFINIBAND)
return true;
return false;
}
static const struct ksmbd_transport_ops ksmbd_smb_direct_transport_ops = {
.prepare = smb_direct_prepare,
.disconnect = smb_direct_disconnect,