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Diffstat (limited to 'net/core/dev.c')
-rw-r--r--net/core/dev.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index 8f4dead64284..7818d7f6295e 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -161,6 +161,7 @@
#include <linux/phy_link_topology.h>
#include "dev.h"
+#include "devmem.h"
#include "net-sysfs.h"
static DEFINE_SPINLOCK(ptype_lock);
@@ -9367,6 +9368,11 @@ int dev_xdp_propagate(struct net_device *dev, struct netdev_bpf *bpf)
if (!dev->netdev_ops->ndo_bpf)
return -EOPNOTSUPP;
+ if (dev_get_min_mp_channel_count(dev)) {
+ NL_SET_ERR_MSG(bpf->extack, "unable to propagate XDP to device using memory provider");
+ return -EBUSY;
+ }
+
return dev->netdev_ops->ndo_bpf(dev, bpf);
}
EXPORT_SYMBOL_GPL(dev_xdp_propagate);
@@ -9399,6 +9405,11 @@ static int dev_xdp_install(struct net_device *dev, enum bpf_xdp_mode mode,
struct netdev_bpf xdp;
int err;
+ if (dev_get_min_mp_channel_count(dev)) {
+ NL_SET_ERR_MSG(extack, "unable to install XDP to device using memory provider");
+ return -EBUSY;
+ }
+
memset(&xdp, 0, sizeof(xdp));
xdp.command = mode == XDP_MODE_HW ? XDP_SETUP_PROG_HW : XDP_SETUP_PROG;
xdp.extack = extack;
@@ -9823,6 +9834,20 @@ err_out:
return err;
}
+u32 dev_get_min_mp_channel_count(const struct net_device *dev)
+{
+ int i;
+
+ ASSERT_RTNL();
+
+ for (i = dev->real_num_rx_queues - 1; i >= 0; i--)
+ if (dev->_rx[i].mp_params.mp_priv)
+ /* The channel count is the idx plus 1. */
+ return i + 1;
+
+ return 0;
+}
+
/**
* dev_index_reserve() - allocate an ifindex in a namespace
* @net: the applicable net namespace
@@ -11359,6 +11384,7 @@ void unregister_netdevice_many_notify(struct list_head *head,
dev_tcx_uninstall(dev);
dev_xdp_uninstall(dev);
bpf_dev_bound_netdev_unregister(dev);
+ dev_dmabuf_uninstall(dev);
netdev_offload_xstats_disable_all(dev);