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-rw-r--r--net/core/dev.c22
1 files changed, 12 insertions, 10 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index 4ad1b78c9c77..b1b0c8d4d7df 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2420,7 +2420,7 @@ EXPORT_SYMBOL(netdev_rx_csum_fault);
2420 * 2. No high memory really exists on this machine. 2420 * 2. No high memory really exists on this machine.
2421 */ 2421 */
2422 2422
2423static int illegal_highdma(struct net_device *dev, struct sk_buff *skb) 2423static int illegal_highdma(const struct net_device *dev, struct sk_buff *skb)
2424{ 2424{
2425#ifdef CONFIG_HIGHMEM 2425#ifdef CONFIG_HIGHMEM
2426 int i; 2426 int i;
@@ -2495,34 +2495,36 @@ static int dev_gso_segment(struct sk_buff *skb, netdev_features_t features)
2495} 2495}
2496 2496
2497static netdev_features_t harmonize_features(struct sk_buff *skb, 2497static netdev_features_t harmonize_features(struct sk_buff *skb,
2498 netdev_features_t features) 2498 const struct net_device *dev,
2499 netdev_features_t features)
2499{ 2500{
2500 if (skb->ip_summed != CHECKSUM_NONE && 2501 if (skb->ip_summed != CHECKSUM_NONE &&
2501 !can_checksum_protocol(features, skb_network_protocol(skb))) { 2502 !can_checksum_protocol(features, skb_network_protocol(skb))) {
2502 features &= ~NETIF_F_ALL_CSUM; 2503 features &= ~NETIF_F_ALL_CSUM;
2503 } else if (illegal_highdma(skb->dev, skb)) { 2504 } else if (illegal_highdma(dev, skb)) {
2504 features &= ~NETIF_F_SG; 2505 features &= ~NETIF_F_SG;
2505 } 2506 }
2506 2507
2507 return features; 2508 return features;
2508} 2509}
2509 2510
2510netdev_features_t netif_skb_features(struct sk_buff *skb) 2511netdev_features_t netif_skb_dev_features(struct sk_buff *skb,
2512 const struct net_device *dev)
2511{ 2513{
2512 __be16 protocol = skb->protocol; 2514 __be16 protocol = skb->protocol;
2513 netdev_features_t features = skb->dev->features; 2515 netdev_features_t features = dev->features;
2514 2516
2515 if (skb_shinfo(skb)->gso_segs > skb->dev->gso_max_segs) 2517 if (skb_shinfo(skb)->gso_segs > dev->gso_max_segs)
2516 features &= ~NETIF_F_GSO_MASK; 2518 features &= ~NETIF_F_GSO_MASK;
2517 2519
2518 if (protocol == htons(ETH_P_8021Q) || protocol == htons(ETH_P_8021AD)) { 2520 if (protocol == htons(ETH_P_8021Q) || protocol == htons(ETH_P_8021AD)) {
2519 struct vlan_ethhdr *veh = (struct vlan_ethhdr *)skb->data; 2521 struct vlan_ethhdr *veh = (struct vlan_ethhdr *)skb->data;
2520 protocol = veh->h_vlan_encapsulated_proto; 2522 protocol = veh->h_vlan_encapsulated_proto;
2521 } else if (!vlan_tx_tag_present(skb)) { 2523 } else if (!vlan_tx_tag_present(skb)) {
2522 return harmonize_features(skb, features); 2524 return harmonize_features(skb, dev, features);
2523 } 2525 }
2524 2526
2525 features &= (skb->dev->vlan_features | NETIF_F_HW_VLAN_CTAG_TX | 2527 features &= (dev->vlan_features | NETIF_F_HW_VLAN_CTAG_TX |
2526 NETIF_F_HW_VLAN_STAG_TX); 2528 NETIF_F_HW_VLAN_STAG_TX);
2527 2529
2528 if (protocol == htons(ETH_P_8021Q) || protocol == htons(ETH_P_8021AD)) 2530 if (protocol == htons(ETH_P_8021Q) || protocol == htons(ETH_P_8021AD))
@@ -2530,9 +2532,9 @@ netdev_features_t netif_skb_features(struct sk_buff *skb)
2530 NETIF_F_GEN_CSUM | NETIF_F_HW_VLAN_CTAG_TX | 2532 NETIF_F_GEN_CSUM | NETIF_F_HW_VLAN_CTAG_TX |
2531 NETIF_F_HW_VLAN_STAG_TX; 2533 NETIF_F_HW_VLAN_STAG_TX;
2532 2534
2533 return harmonize_features(skb, features); 2535 return harmonize_features(skb, dev, features);
2534} 2536}
2535EXPORT_SYMBOL(netif_skb_features); 2537EXPORT_SYMBOL(netif_skb_dev_features);
2536 2538
2537int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev, 2539int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
2538 struct netdev_queue *txq) 2540 struct netdev_queue *txq)