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-rw-r--r--net/core/dev.c131
1 files changed, 116 insertions, 15 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index 1b5a4410be0e..f409406254dd 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1184,7 +1184,21 @@ int dev_change_name(struct net_device *dev, const char *newname)
BUG_ON(!dev_net(dev));
net = dev_net(dev);
- if (dev->flags & IFF_UP)
+
+ /* Some auto-enslaved devices e.g. failover slaves are
+ * special, as userspace might rename the device after
+ * the interface had been brought up and running since
+ * the point kernel initiated auto-enslavement. Allow
+ * live name change even when these slave devices are
+ * up and running.
+ *
+ * Typically, users of these auto-enslaving devices
+ * don't actually care about slave name change, as
+ * they are supposed to operate on master interface
+ * directly.
+ */
+ if (dev->flags & IFF_UP &&
+ likely(!(dev->priv_flags & IFF_LIVE_RENAME_OK)))
return -EBUSY;
write_seqcount_begin(&devnet_rename_seq);
@@ -1821,7 +1835,7 @@ EXPORT_SYMBOL_GPL(net_dec_egress_queue);
#endif
static DEFINE_STATIC_KEY_FALSE(netstamp_needed_key);
-#ifdef HAVE_JUMP_LABEL
+#ifdef CONFIG_JUMP_LABEL
static atomic_t netstamp_needed_deferred;
static atomic_t netstamp_wanted;
static void netstamp_clear(struct work_struct *work)
@@ -1840,7 +1854,7 @@ static DECLARE_WORK(netstamp_work, netstamp_clear);
void net_enable_timestamp(void)
{
-#ifdef HAVE_JUMP_LABEL
+#ifdef CONFIG_JUMP_LABEL
int wanted;
while (1) {
@@ -1860,7 +1874,7 @@ EXPORT_SYMBOL(net_enable_timestamp);
void net_disable_timestamp(void)
{
-#ifdef HAVE_JUMP_LABEL
+#ifdef CONFIG_JUMP_LABEL
int wanted;
while (1) {
@@ -3421,7 +3435,7 @@ static void qdisc_pkt_len_init(struct sk_buff *skb)
/* To get more precise estimation of bytes sent on wire,
* we add to pkt_len the headers size of all segments
*/
- if (shinfo->gso_size) {
+ if (shinfo->gso_size && skb_transport_header_was_set(skb)) {
unsigned int hdr_len;
u16 gso_segs = shinfo->gso_segs;
@@ -5014,8 +5028,10 @@ static inline void __netif_receive_skb_list_ptype(struct list_head *head,
if (pt_prev->list_func != NULL)
pt_prev->list_func(head, pt_prev, orig_dev);
else
- list_for_each_entry_safe(skb, next, head, list)
+ list_for_each_entry_safe(skb, next, head, list) {
+ skb_list_del_init(skb);
pt_prev->func(skb, skb->dev, pt_prev, orig_dev);
+ }
}
static void __netif_receive_skb_list_core(struct list_head *head, bool pfmemalloc)
@@ -7878,6 +7894,63 @@ int dev_get_phys_port_name(struct net_device *dev,
EXPORT_SYMBOL(dev_get_phys_port_name);
/**
+ * dev_get_port_parent_id - Get the device's port parent identifier
+ * @dev: network device
+ * @ppid: pointer to a storage for the port's parent identifier
+ * @recurse: allow/disallow recursion to lower devices
+ *
+ * Get the devices's port parent identifier
+ */
+int dev_get_port_parent_id(struct net_device *dev,
+ struct netdev_phys_item_id *ppid,
+ bool recurse)
+{
+ const struct net_device_ops *ops = dev->netdev_ops;
+ struct netdev_phys_item_id first = { };
+ struct net_device *lower_dev;
+ struct list_head *iter;
+ int err = -EOPNOTSUPP;
+
+ if (ops->ndo_get_port_parent_id)
+ return ops->ndo_get_port_parent_id(dev, ppid);
+
+ if (!recurse)
+ return err;
+
+ netdev_for_each_lower_dev(dev, lower_dev, iter) {
+ err = dev_get_port_parent_id(lower_dev, ppid, recurse);
+ if (err)
+ break;
+ if (!first.id_len)
+ first = *ppid;
+ else if (memcmp(&first, ppid, sizeof(*ppid)))
+ return -ENODATA;
+ }
+
+ return err;
+}
+EXPORT_SYMBOL(dev_get_port_parent_id);
+
+/**
+ * netdev_port_same_parent_id - Indicate if two network devices have
+ * the same port parent identifier
+ * @a: first network device
+ * @b: second network device
+ */
+bool netdev_port_same_parent_id(struct net_device *a, struct net_device *b)
+{
+ struct netdev_phys_item_id a_id = { };
+ struct netdev_phys_item_id b_id = { };
+
+ if (dev_get_port_parent_id(a, &a_id, true) ||
+ dev_get_port_parent_id(b, &b_id, true))
+ return false;
+
+ return netdev_phys_item_id_same(&a_id, &b_id);
+}
+EXPORT_SYMBOL(netdev_port_same_parent_id);
+
+/**
* dev_change_proto_down - update protocol port state information
* @dev: device
* @proto_down: new value
@@ -7897,6 +7970,25 @@ int dev_change_proto_down(struct net_device *dev, bool proto_down)
}
EXPORT_SYMBOL(dev_change_proto_down);
+/**
+ * dev_change_proto_down_generic - generic implementation for
+ * ndo_change_proto_down that sets carrier according to
+ * proto_down.
+ *
+ * @dev: device
+ * @proto_down: new value
+ */
+int dev_change_proto_down_generic(struct net_device *dev, bool proto_down)
+{
+ if (proto_down)
+ netif_carrier_off(dev);
+ else
+ netif_carrier_on(dev);
+ dev->proto_down = proto_down;
+ return 0;
+}
+EXPORT_SYMBOL(dev_change_proto_down_generic);
+
u32 __dev_xdp_query(struct net_device *dev, bpf_op_t bpf_op,
enum bpf_netdev_command cmd)
{
@@ -7976,35 +8068,41 @@ int dev_change_xdp_fd(struct net_device *dev, struct netlink_ext_ack *extack,
enum bpf_netdev_command query;
struct bpf_prog *prog = NULL;
bpf_op_t bpf_op, bpf_chk;
+ bool offload;
int err;
ASSERT_RTNL();
- query = flags & XDP_FLAGS_HW_MODE ? XDP_QUERY_PROG_HW : XDP_QUERY_PROG;
+ offload = flags & XDP_FLAGS_HW_MODE;
+ query = offload ? XDP_QUERY_PROG_HW : XDP_QUERY_PROG;
bpf_op = bpf_chk = ops->ndo_bpf;
- if (!bpf_op && (flags & (XDP_FLAGS_DRV_MODE | XDP_FLAGS_HW_MODE)))
+ if (!bpf_op && (flags & (XDP_FLAGS_DRV_MODE | XDP_FLAGS_HW_MODE))) {
+ NL_SET_ERR_MSG(extack, "underlying driver does not support XDP in native mode");
return -EOPNOTSUPP;
+ }
if (!bpf_op || (flags & XDP_FLAGS_SKB_MODE))
bpf_op = generic_xdp_install;
if (bpf_op == bpf_chk)
bpf_chk = generic_xdp_install;
if (fd >= 0) {
- if (__dev_xdp_query(dev, bpf_chk, XDP_QUERY_PROG) ||
- __dev_xdp_query(dev, bpf_chk, XDP_QUERY_PROG_HW))
+ if (!offload && __dev_xdp_query(dev, bpf_chk, XDP_QUERY_PROG)) {
+ NL_SET_ERR_MSG(extack, "native and generic XDP can't be active at the same time");
return -EEXIST;
+ }
if ((flags & XDP_FLAGS_UPDATE_IF_NOEXIST) &&
- __dev_xdp_query(dev, bpf_op, query))
+ __dev_xdp_query(dev, bpf_op, query)) {
+ NL_SET_ERR_MSG(extack, "XDP program already attached");
return -EBUSY;
+ }
prog = bpf_prog_get_type_dev(fd, BPF_PROG_TYPE_XDP,
bpf_op == ops->ndo_bpf);
if (IS_ERR(prog))
return PTR_ERR(prog);
- if (!(flags & XDP_FLAGS_HW_MODE) &&
- bpf_prog_is_dev_bound(prog->aux)) {
+ if (!offload && bpf_prog_is_dev_bound(prog->aux)) {
NL_SET_ERR_MSG(extack, "using device-bound program without HW_MODE flag is not supported");
bpf_prog_put(prog);
return -EINVAL;
@@ -8152,7 +8250,7 @@ static netdev_features_t netdev_sync_upper_features(struct net_device *lower,
netdev_features_t feature;
int feature_bit;
- for_each_netdev_feature(&upper_disables, feature_bit) {
+ for_each_netdev_feature(upper_disables, feature_bit) {
feature = __NETIF_F_BIT(feature_bit);
if (!(upper->wanted_features & feature)
&& (features & feature)) {
@@ -8172,7 +8270,7 @@ static void netdev_sync_lower_features(struct net_device *upper,
netdev_features_t feature;
int feature_bit;
- for_each_netdev_feature(&upper_disables, feature_bit) {
+ for_each_netdev_feature(upper_disables, feature_bit) {
feature = __NETIF_F_BIT(feature_bit);
if (!(features & feature) && (lower->features & feature)) {
netdev_dbg(upper, "Disabling feature %pNF on lower dev %s.\n",
@@ -8712,6 +8810,9 @@ int init_dummy_netdev(struct net_device *dev)
set_bit(__LINK_STATE_PRESENT, &dev->state);
set_bit(__LINK_STATE_START, &dev->state);
+ /* napi_busy_loop stats accounting wants this */
+ dev_net_set(dev, &init_net);
+
/* Note : We dont allocate pcpu_refcnt for dummy devices,
* because users of this 'device' dont need to change
* its refcount.
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2025-05-02 17:16:33 +0200