X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Flinux%2Fnetdevice.h;h=fea0d9db684604dc1d3b9e98dd25d32172c69291;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=c5b97cf5970786395432e0d2191b4121e127396a;hpb=4e76c8a9fa413ccc09d3f7f664183dcce3555d57;p=linux-2.6.git diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index c5b97cf59..fea0d9db6 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -30,15 +30,15 @@ #include #ifdef __KERNEL__ +#include #include #include #include -#include #include #include +#include -struct divert_blk; struct vlan_group; struct ethtool_ops; struct netpoll_info; @@ -67,6 +67,10 @@ struct netpoll_info; #define NET_RX_CN_HIGH 4 /* The storm is here */ #define NET_RX_BAD 5 /* packet dropped due to kernel error */ +/* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It + * indicates that the device will soon be dropping packets, or already drops + * some packets of the same priority; prompting us to send less aggressively. */ +#define net_xmit_eval(e) ((e) == NET_XMIT_CN? 0 : (e)) #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0) #endif @@ -93,8 +97,10 @@ struct netpoll_info; #endif #endif -#if !defined(CONFIG_NET_IPIP) && \ - !defined(CONFIG_IPV6) && !defined(CONFIG_IPV6_MODULE) +#if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \ + !defined(CONFIG_NET_IPGRE) && !defined(CONFIG_NET_IPGRE_MODULE) && \ + !defined(CONFIG_IPV6_SIT) && !defined(CONFIG_IPV6_SIT_MODULE) && \ + !defined(CONFIG_IPV6_TUNNEL) && !defined(CONFIG_IPV6_TUNNEL_MODULE) #define MAX_HEADER LL_MAX_HEADER #else #define MAX_HEADER (LL_MAX_HEADER + 48) @@ -187,13 +193,20 @@ struct hh_cache { struct hh_cache *hh_next; /* Next entry */ atomic_t hh_refcnt; /* number of users */ - unsigned short hh_type; /* protocol identifier, f.e ETH_P_IP +/* + * We want hh_output, hh_len, hh_lock and hh_data be a in a separate + * cache line on SMP. + * They are mostly read, but hh_refcnt may be changed quite frequently, + * incurring cache line ping pongs. + */ + __be16 hh_type ____cacheline_aligned_in_smp; + /* protocol identifier, f.e ETH_P_IP * NOTE: For VLANs, this will be the * encapuslated type. --BLG */ - int hh_len; /* length of header */ + u16 hh_len; /* length of header */ int (*hh_output)(struct sk_buff *skb); - rwlock_t hh_lock; + seqlock_t hh_lock; /* cached hardware header; allow for machine alignment needs. */ #define HH_DATA_MOD 16 @@ -313,9 +326,15 @@ struct net_device /* Segmentation offload features */ #define NETIF_F_GSO_SHIFT 16 +#define NETIF_F_GSO_MASK 0xffff0000 #define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT) -#define NETIF_F_UFO (SKB_GSO_UDPV4 << NETIF_F_GSO_SHIFT) +#define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT) #define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT) +#define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT) +#define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT) + + /* List of features with software fallbacks. */ +#define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6) #define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM) #define NETIF_F_ALL_CSUM (NETIF_F_IP_CSUM | NETIF_F_GEN_CSUM) @@ -328,7 +347,6 @@ struct net_device struct net_device_stats* (*get_stats)(struct net_device *dev); - struct iw_statistics* (*get_wireless_stats)(struct net_device *dev); /* List of functions to handle Wireless Extensions (instead of ioctl). * See for details. Jean II */ @@ -336,7 +354,7 @@ struct net_device /* Instance data managed by the core of Wireless Extensions. */ struct iw_public_data * wireless_data; - struct ethtool_ops *ethtool_ops; + const struct ethtool_ops *ethtool_ops; /* * This marks the end of the "visible" part of the structure. All @@ -510,11 +528,6 @@ struct net_device /* bridge stuff */ struct net_bridge_port *br_port; -#ifdef CONFIG_NET_DIVERT - /* this will get initialized at each interface type init routine */ - struct divert_blk *divert; -#endif /* CONFIG_NET_DIVERT */ - /* class/net/name entry */ struct class_device class_dev; /* space for optional statistics and wireless sysfs groups */ @@ -608,6 +621,9 @@ struct softnet_data struct sk_buff *completion_queue; struct net_device backlog_dev; /* Sorry. 8) */ +#ifdef CONFIG_NET_DMA + struct dma_chan *net_dma; +#endif }; DECLARE_PER_CPU(struct softnet_data,softnet_data); @@ -699,7 +715,6 @@ extern int dev_hard_start_xmit(struct sk_buff *skb, extern void dev_init(void); -extern int netdev_nit; extern int netdev_budget; /* Called by rtnetlink.c:rtnl_unlock() */ @@ -891,6 +906,7 @@ static inline void netif_poll_disable(struct net_device *dev) static inline void netif_poll_enable(struct net_device *dev) { + smp_mb__before_clear_bit(); clear_bit(__LINK_STATE_RX_SCHED, &dev->state); } @@ -968,7 +984,7 @@ extern void dev_mcast_init(void); extern int netdev_max_backlog; extern int weight_p; extern int netdev_set_master(struct net_device *dev, struct net_device *master); -extern int skb_checksum_help(struct sk_buff *skb, int inward); +extern int skb_checksum_help(struct sk_buff *skb); extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features); #ifdef CONFIG_BUG extern void netdev_rx_csum_fault(struct net_device *dev); @@ -989,17 +1005,51 @@ extern void dev_seq_stop(struct seq_file *seq, void *v); extern void linkwatch_run_queue(void); -static inline int skb_gso_ok(struct sk_buff *skb, int features) +static inline int net_gso_ok(int features, int gso_type) { - int feature = skb_shinfo(skb)->gso_type << NETIF_F_GSO_SHIFT; + int feature = gso_type << NETIF_F_GSO_SHIFT; return (features & feature) == feature; } +static inline int skb_gso_ok(struct sk_buff *skb, int features) +{ + return net_gso_ok(features, skb_shinfo(skb)->gso_type); +} + static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb) { return skb_is_gso(skb) && (!skb_gso_ok(skb, dev->features) || - unlikely(skb->ip_summed != CHECKSUM_HW)); + unlikely(skb->ip_summed != CHECKSUM_PARTIAL)); +} + +/* On bonding slaves other than the currently active slave, suppress + * duplicates except for 802.3ad ETH_P_SLOW, alb non-mcast/bcast, and + * ARP on active-backup slaves with arp_validate enabled. + */ +static inline int skb_bond_should_drop(struct sk_buff *skb) +{ + struct net_device *dev = skb->dev; + struct net_device *master = dev->master; + + if (master && + (dev->priv_flags & IFF_SLAVE_INACTIVE)) { + if ((dev->priv_flags & IFF_SLAVE_NEEDARP) && + skb->protocol == __constant_htons(ETH_P_ARP)) + return 0; + + if (master->priv_flags & IFF_MASTER_ALB) { + if (skb->pkt_type != PACKET_BROADCAST && + skb->pkt_type != PACKET_MULTICAST) + return 0; + } + if (master->priv_flags & IFF_MASTER_8023AD && + skb->protocol == __constant_htons(ETH_P_SLOW)) + return 0; + + return 1; + } + return 0; } #endif /* __KERNEL__ */