On Fri, 2007-07-20 at 12:02 +0530, Krishna Kumar wrote:
> Networking include file changes for batching.
>
> Signed-off-by: Krishna Kumar <[EMAIL PROTECTED]>
> ---
> linux/netdevice.h | 10 ++++++++++
> net/pkt_sched.h | 6 +++---
> 2 files changed, 13 insertions(+), 3 deletions(-)
>
> diff -ruNp org/include/linux/netdevice.h new/include/linux/netdevice.h
> --- org/include/linux/netdevice.h 2007-07-20 07:49:28.000000000 +0530
> +++ new/include/linux/netdevice.h 2007-07-20 08:30:55.000000000 +0530
> @@ -264,6 +264,8 @@ enum netdev_state_t
> __LINK_STATE_QDISC_RUNNING,
> };
>
> +/* Minimum length of device hardware queue for batching to work */
> +#define MIN_QUEUE_LEN_BATCH 16
>
> /*
> * This structure holds at boot time configured netdevice settings. They
> @@ -340,6 +342,7 @@ struct net_device
> #define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN
> packets */
> #define NETIF_F_GSO 2048 /* Enable software GSO. */
> #define NETIF_F_LLTX 4096 /* LockLess TX */
> +#define NETIF_F_BATCH_SKBS 8192 /* Driver supports batch skbs API */
> #define NETIF_F_MULTI_QUEUE 16384 /* Has multiple TX/RX queues */
>
> /* Segmentation offload features */
> @@ -452,6 +455,8 @@ struct net_device
> struct Qdisc *qdisc_sleeping;
> struct list_head qdisc_list;
> unsigned long tx_queue_len; /* Max frames per queue allowed
> */
> + unsigned long xmit_slots; /* Device free slots */
> + struct sk_buff_head *skb_blist; /* List of batch skbs */
>
> /* Partially transmitted GSO packet. */
> struct sk_buff *gso_skb;
> @@ -472,6 +477,9 @@ struct net_device
> void *priv; /* pointer to private data */
> int (*hard_start_xmit) (struct sk_buff *skb,
> struct net_device *dev);
> + int (*hard_start_xmit_batch) (struct net_device
> + *dev);
> +
> /* These may be needed for future network-power-down code. */
> unsigned long trans_start; /* Time (in jiffies) of last Tx
> */
>
> @@ -832,6 +840,8 @@ extern int dev_set_mac_address(struct n
> struct sockaddr *);
> extern int dev_hard_start_xmit(struct sk_buff *skb,
> struct net_device *dev);
> +extern int dev_add_skb_to_blist(struct sk_buff *skb,
> + struct net_device *dev);
>
> extern void dev_init(void);
>
> diff -ruNp org/include/net/pkt_sched.h new/include/net/pkt_sched.h
> --- org/include/net/pkt_sched.h 2007-07-20 07:49:28.000000000 +0530
> +++ new/include/net/pkt_sched.h 2007-07-20 08:30:22.000000000 +0530
> @@ -80,13 +80,13 @@ extern struct qdisc_rate_table *qdisc_ge
> struct rtattr *tab);
> extern void qdisc_put_rtab(struct qdisc_rate_table *tab);
>
> -extern void __qdisc_run(struct net_device *dev);
> +extern void __qdisc_run(struct net_device *dev, struct sk_buff_head *blist);
Why do we need this additional 'blist' argument?
Is this different from dev->skb_blist?
>
> -static inline void qdisc_run(struct net_device *dev)
> +static inline void qdisc_run(struct net_device *dev, struct sk_buff_head
> *blist)
> {
> if (!netif_queue_stopped(dev) &&
> !test_and_set_bit(__LINK_STATE_QDISC_RUNNING, &dev->state))
> - __qdisc_run(dev);
> + __qdisc_run(dev, blist);
> }
>
> extern int tc_classify_compat(struct sk_buff *skb, struct tcf_proto *tp,
-
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