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Date: Fri, 20 Jul 2007 12:02:16 +0530 From: Krishna Kumar <krkumar2@...ibm.com> To: davem@...emloft.net, rdreier@...co.com Cc: johnpol@....mipt.ru, Robert.Olsson@...a.slu.se, peter.p.waskiewicz.jr@...el.com, herbert@...dor.apana.org.au, gaagaan@...il.com, kumarkr@...ux.ibm.com, xma@...ibm.com, rick.jones2@...com, mcarlson@...adcom.com, netdev@...r.kernel.org, jagana@...ibm.com, general@...ts.openfabrics.org, mchan@...adcom.com, tgraf@...g.ch, jeff@...zik.org, hadi@...erus.ca, kaber@...sh.net, Krishna Kumar <krkumar2@...ibm.com>, sri@...ibm.com Subject: [PATCH 02/10] Networking include file changes. Networking include file changes for batching. Signed-off-by: Krishna Kumar <krkumar2@...ibm.com> --- 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); -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, - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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