diff options
Diffstat (limited to 'net/dsa/user.c')
-rw-r--r-- | net/dsa/user.c | 36 |
1 files changed, 8 insertions, 28 deletions
diff --git a/net/dsa/user.c b/net/dsa/user.c index d438884a4eb0..b15e71cc342c 100644 --- a/net/dsa/user.c +++ b/net/dsa/user.c @@ -920,30 +920,6 @@ netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev) } EXPORT_SYMBOL_GPL(dsa_enqueue_skb); -static int dsa_realloc_skb(struct sk_buff *skb, struct net_device *dev) -{ - int needed_headroom = dev->needed_headroom; - int needed_tailroom = dev->needed_tailroom; - - /* For tail taggers, we need to pad short frames ourselves, to ensure - * that the tail tag does not fail at its role of being at the end of - * the packet, once the conduit interface pads the frame. Account for - * that pad length here, and pad later. - */ - if (unlikely(needed_tailroom && skb->len < ETH_ZLEN)) - needed_tailroom += ETH_ZLEN - skb->len; - /* skb_headroom() returns unsigned int... */ - needed_headroom = max_t(int, needed_headroom - skb_headroom(skb), 0); - needed_tailroom = max_t(int, needed_tailroom - skb_tailroom(skb), 0); - - if (likely(!needed_headroom && !needed_tailroom && !skb_cloned(skb))) - /* No reallocation needed, yay! */ - return 0; - - return pskb_expand_head(skb, needed_headroom, needed_tailroom, - GFP_ATOMIC); -} - static netdev_tx_t dsa_user_xmit(struct sk_buff *skb, struct net_device *dev) { struct dsa_user_priv *p = netdev_priv(dev); @@ -956,13 +932,14 @@ static netdev_tx_t dsa_user_xmit(struct sk_buff *skb, struct net_device *dev) /* Handle tx timestamp if any */ dsa_skb_tx_timestamp(p, skb); - if (dsa_realloc_skb(skb, dev)) { + if (skb_ensure_writable_head_tail(skb, dev)) { dev_kfree_skb_any(skb); return NETDEV_TX_OK; } /* needed_tailroom should still be 'warm' in the cache line from - * dsa_realloc_skb(), which has also ensured that padding is safe. + * skb_ensure_writable_head_tail(), which has also ensured that + * padding is safe. */ if (dev->needed_tailroom) eth_skb_pad(skb); @@ -2829,13 +2806,14 @@ EXPORT_SYMBOL_GPL(dsa_user_dev_check); static int dsa_user_changeupper(struct net_device *dev, struct netdev_notifier_changeupper_info *info) { - struct dsa_port *dp = dsa_user_to_port(dev); struct netlink_ext_ack *extack; int err = NOTIFY_DONE; + struct dsa_port *dp; if (!dsa_user_dev_check(dev)) return err; + dp = dsa_user_to_port(dev); extack = netdev_notifier_info_to_extack(&info->info); if (netif_is_bridge_master(info->upper_dev)) { @@ -2888,11 +2866,13 @@ static int dsa_user_changeupper(struct net_device *dev, static int dsa_user_prechangeupper(struct net_device *dev, struct netdev_notifier_changeupper_info *info) { - struct dsa_port *dp = dsa_user_to_port(dev); + struct dsa_port *dp; if (!dsa_user_dev_check(dev)) return NOTIFY_DONE; + dp = dsa_user_to_port(dev); + if (netif_is_bridge_master(info->upper_dev) && !info->linking) dsa_port_pre_bridge_leave(dp, info->upper_dev); else if (netif_is_lag_master(info->upper_dev) && !info->linking) |