From: Arnd Bergmann Date: Thu, 26 Nov 2009 06:07:09 +0000 (+0000) Subject: macvlan: cleanup rx statistics X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a1e514c5d0397b5581721aad9b303f7df83b103d;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git macvlan: cleanup rx statistics We have very similar code for rx statistics in two places in the macvlan driver, with a third one being added in the next patch. Consolidate them into one function to improve overall readability of the driver. Signed-off-by: Arnd Bergmann Acked-by: Patrick McHardy Signed-off-by: David S. Miller --- diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c index ae2b5c79c55e..1e7faf9e87b2 100644 --- a/drivers/net/macvlan.c +++ b/drivers/net/macvlan.c @@ -116,42 +116,58 @@ static int macvlan_addr_busy(const struct macvlan_port *port, return 0; } +static inline void macvlan_count_rx(const struct macvlan_dev *vlan, + unsigned int len, bool success, + bool multicast) +{ + struct macvlan_rx_stats *rx_stats; + + rx_stats = per_cpu_ptr(vlan->rx_stats, smp_processor_id()); + if (likely(success)) { + rx_stats->rx_packets++;; + rx_stats->rx_bytes += len; + if (multicast) + rx_stats->multicast++; + } else { + rx_stats->rx_errors++; + } +} + +static int macvlan_broadcast_one(struct sk_buff *skb, struct net_device *dev, + const struct ethhdr *eth) +{ + if (!skb) + return NET_RX_DROP; + + skb->dev = dev; + if (!compare_ether_addr_64bits(eth->h_dest, + dev->broadcast)) + skb->pkt_type = PACKET_BROADCAST; + else + skb->pkt_type = PACKET_MULTICAST; + + return netif_rx(skb); +} + static void macvlan_broadcast(struct sk_buff *skb, const struct macvlan_port *port) { const struct ethhdr *eth = eth_hdr(skb); const struct macvlan_dev *vlan; struct hlist_node *n; - struct net_device *dev; struct sk_buff *nskb; unsigned int i; - struct macvlan_rx_stats *rx_stats; + int err; if (skb->protocol == htons(ETH_P_PAUSE)) return; for (i = 0; i < MACVLAN_HASH_SIZE; i++) { hlist_for_each_entry_rcu(vlan, n, &port->vlan_hash[i], hlist) { - dev = vlan->dev; - rx_stats = per_cpu_ptr(vlan->rx_stats, smp_processor_id()); - nskb = skb_clone(skb, GFP_ATOMIC); - if (nskb == NULL) { - rx_stats->rx_errors++; - continue; - } - - rx_stats->rx_bytes += skb->len + ETH_HLEN; - rx_stats->rx_packets++; - rx_stats->multicast++; - - nskb->dev = dev; - if (!compare_ether_addr_64bits(eth->h_dest, dev->broadcast)) - nskb->pkt_type = PACKET_BROADCAST; - else - nskb->pkt_type = PACKET_MULTICAST; - - netif_rx(nskb); + err = macvlan_broadcast_one(nskb, vlan->dev, eth); + macvlan_count_rx(vlan, skb->len + ETH_HLEN, + err == NET_RX_SUCCESS, 1); } } } @@ -163,7 +179,7 @@ static struct sk_buff *macvlan_handle_frame(struct sk_buff *skb) const struct macvlan_port *port; const struct macvlan_dev *vlan; struct net_device *dev; - struct macvlan_rx_stats *rx_stats; + unsigned int len; port = rcu_dereference(skb->dev->macvlan_port); if (port == NULL) @@ -183,15 +199,11 @@ static struct sk_buff *macvlan_handle_frame(struct sk_buff *skb) kfree_skb(skb); return NULL; } - rx_stats = per_cpu_ptr(vlan->rx_stats, smp_processor_id()); + len = skb->len + ETH_HLEN; skb = skb_share_check(skb, GFP_ATOMIC); - if (skb == NULL) { - rx_stats->rx_errors++; + macvlan_count_rx(vlan, len, skb != NULL, 0); + if (!skb) return NULL; - } - - rx_stats->rx_bytes += skb->len + ETH_HLEN; - rx_stats->rx_packets++; skb->dev = dev; skb->pkt_type = PACKET_HOST;