AcoSail/kernel_optimize_test
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Merge gregkh@master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

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This commit is contained in:
Greg Kroah-Hartman 2006-08-09 11:49:13 -07:00
commit a465714109
10 changed files with 72 additions and 41 deletions
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51
drivers/net/tg3.c
View File

@ -68,8 +68,8 @@
#define DRV_MODULE_NAME "tg3"
#define PFX DRV_MODULE_NAME ": "
#define DRV_MODULE_VERSION "3.64"
#define DRV_MODULE_RELDATE "July 31, 2006"
#define DRV_MODULE_VERSION "3.65"
#define DRV_MODULE_RELDATE "August 07, 2006"
#define TG3_DEF_MAC_MODE 0
#define TG3_DEF_RX_MODE 0
@ -123,9 +123,6 @@
TG3_RX_RCB_RING_SIZE(tp))
#define TG3_TX_RING_BYTES (sizeof(struct tg3_tx_buffer_desc) * \
TG3_TX_RING_SIZE)
#define TX_BUFFS_AVAIL(TP) \
((TP)->tx_pending - \
(((TP)->tx_prod - (TP)->tx_cons) & (TG3_TX_RING_SIZE - 1)))
#define NEXT_TX(N) (((N) + 1) & (TG3_TX_RING_SIZE - 1))
#define RX_PKT_BUF_SZ (1536 + tp->rx_offset + 64)
@ -2987,6 +2984,13 @@ static void tg3_tx_recover(struct tg3 *tp)
spin_unlock(&tp->lock);
}
static inline u32 tg3_tx_avail(struct tg3 *tp)
{
smp_mb();
return (tp->tx_pending -
((tp->tx_prod - tp->tx_cons) & (TG3_TX_RING_SIZE - 1)));
}
/* Tigon3 never reports partial packet sends. So we do not
* need special logic to handle SKBs that have not had all
* of their frags sent yet, like SunGEM does.
@ -3038,12 +3042,20 @@ static void tg3_tx(struct tg3 *tp)
tp->tx_cons = sw_idx;
if (unlikely(netif_queue_stopped(tp->dev))) {
spin_lock(&tp->tx_lock);
/* Need to make the tx_cons update visible to tg3_start_xmit()
* before checking for netif_queue_stopped(). Without the
* memory barrier, there is a small possibility that tg3_start_xmit()
* will miss it and cause the queue to be stopped forever.
*/
smp_mb();
if (unlikely(netif_queue_stopped(tp->dev) &&
(tg3_tx_avail(tp) > TG3_TX_WAKEUP_THRESH))) {
netif_tx_lock(tp->dev);
if (netif_queue_stopped(tp->dev) &&
(TX_BUFFS_AVAIL(tp) > TG3_TX_WAKEUP_THRESH))
(tg3_tx_avail(tp) > TG3_TX_WAKEUP_THRESH))
netif_wake_queue(tp->dev);
spin_unlock(&tp->tx_lock);
netif_tx_unlock(tp->dev);
}
}
@ -3101,7 +3113,6 @@ static int tg3_alloc_rx_skb(struct tg3 *tp, u32 opaque_key,
if (skb == NULL)
return -ENOMEM;
skb->dev = tp->dev;
skb_reserve(skb, tp->rx_offset);
mapping = pci_map_single(tp->pdev, skb->data,
@ -3274,7 +3285,6 @@ static int tg3_rx(struct tg3 *tp, int budget)
if (copy_skb == NULL)
goto drop_it_no_recycle;
copy_skb->dev = tp->dev;
skb_reserve(copy_skb, 2);
skb_put(copy_skb, len);
pci_dma_sync_single_for_cpu(tp->pdev, dma_addr, len, PCI_DMA_FROMDEVICE);
@ -3797,7 +3807,7 @@ static int tg3_start_xmit(struct sk_buff *skb, struct net_device *dev)
* interrupt. Furthermore, IRQ processing runs lockless so we have
* no IRQ context deadlocks to worry about either. Rejoice!
*/
if (unlikely(TX_BUFFS_AVAIL(tp) <= (skb_shinfo(skb)->nr_frags + 1))) {
if (unlikely(tg3_tx_avail(tp) <= (skb_shinfo(skb)->nr_frags + 1))) {
if (!netif_queue_stopped(dev)) {
netif_stop_queue(dev);
@ -3893,12 +3903,10 @@ static int tg3_start_xmit(struct sk_buff *skb, struct net_device *dev)
tw32_tx_mbox((MAILBOX_SNDHOST_PROD_IDX_0 + TG3_64BIT_REG_LOW), entry);
tp->tx_prod = entry;
if (unlikely(TX_BUFFS_AVAIL(tp) <= (MAX_SKB_FRAGS + 1))) {
spin_lock(&tp->tx_lock);
if (unlikely(tg3_tx_avail(tp) <= (MAX_SKB_FRAGS + 1))) {
netif_stop_queue(dev);
if (TX_BUFFS_AVAIL(tp) > TG3_TX_WAKEUP_THRESH)
if (tg3_tx_avail(tp) > TG3_TX_WAKEUP_THRESH)
netif_wake_queue(tp->dev);
spin_unlock(&tp->tx_lock);
}
out_unlock:
@ -3920,7 +3928,7 @@ static int tg3_tso_bug(struct tg3 *tp, struct sk_buff *skb)
struct sk_buff *segs, *nskb;
/* Estimate the number of fragments in the worst case */
if (unlikely(TX_BUFFS_AVAIL(tp) <= (skb_shinfo(skb)->gso_segs * 3))) {
if (unlikely(tg3_tx_avail(tp) <= (skb_shinfo(skb)->gso_segs * 3))) {
netif_stop_queue(tp->dev);
return NETDEV_TX_BUSY;
}
@ -3960,7 +3968,7 @@ static int tg3_start_xmit_dma_bug(struct sk_buff *skb, struct net_device *dev)
* interrupt. Furthermore, IRQ processing runs lockless so we have
* no IRQ context deadlocks to worry about either. Rejoice!
*/
if (unlikely(TX_BUFFS_AVAIL(tp) <= (skb_shinfo(skb)->nr_frags + 1))) {
if (unlikely(tg3_tx_avail(tp) <= (skb_shinfo(skb)->nr_frags + 1))) {
if (!netif_queue_stopped(dev)) {
netif_stop_queue(dev);
@ -4110,12 +4118,10 @@ static int tg3_start_xmit_dma_bug(struct sk_buff *skb, struct net_device *dev)
tw32_tx_mbox((MAILBOX_SNDHOST_PROD_IDX_0 + TG3_64BIT_REG_LOW), entry);
tp->tx_prod = entry;
if (unlikely(TX_BUFFS_AVAIL(tp) <= (MAX_SKB_FRAGS + 1))) {
spin_lock(&tp->tx_lock);
if (unlikely(tg3_tx_avail(tp) <= (MAX_SKB_FRAGS + 1))) {
netif_stop_queue(dev);
if (TX_BUFFS_AVAIL(tp) > TG3_TX_WAKEUP_THRESH)
if (tg3_tx_avail(tp) > TG3_TX_WAKEUP_THRESH)
netif_wake_queue(tp->dev);
spin_unlock(&tp->tx_lock);
}
out_unlock:
@ -11474,7 +11480,6 @@ static int __devinit tg3_init_one(struct pci_dev *pdev,
tp->grc_mode |= GRC_MODE_BSWAP_NONFRM_DATA;
#endif
spin_lock_init(&tp->lock);
spin_lock_init(&tp->tx_lock);
spin_lock_init(&tp->indirect_lock);
INIT_WORK(&tp->reset_task, tg3_reset_task, tp);

8
drivers/net/tg3.h
View File

@ -2079,9 +2079,9 @@ struct tg3 {
* lock: Held during reset, PHY access, timer, and when
* updating tg3_flags and tg3_flags2.
*
* tx_lock: Held during tg3_start_xmit and tg3_tx only
* when calling netif_[start|stop]_queue.
* tg3_start_xmit is protected by netif_tx_lock.
* netif_tx_lock: Held during tg3_start_xmit. tg3_tx holds
* netif_tx_lock when it needs to call
* netif_wake_queue.
*
* Both of these locks are to be held with BH safety.
*
@ -2118,8 +2118,6 @@ struct tg3 {
u32 tx_cons;
u32 tx_pending;
spinlock_t tx_lock;
struct tg3_tx_buffer_desc *tx_ring;
struct tx_ring_info *tx_buffers;
dma_addr_t tx_desc_mapping;

4
include/linux/skbuff.h
View File

@ -1081,7 +1081,7 @@ static inline void __skb_queue_purge(struct sk_buff_head *list)
* the headroom they think they need without accounting for the
* built in space. The built in space is used for optimisations.
*
* %NULL is returned in there is no free memory.
* %NULL is returned if there is no free memory.
*/
static inline struct sk_buff *__dev_alloc_skb(unsigned int length,
gfp_t gfp_mask)
@ -1101,7 +1101,7 @@ static inline struct sk_buff *__dev_alloc_skb(unsigned int length,
* the headroom they think they need without accounting for the
* built in space. The built in space is used for optimisations.
*
* %NULL is returned in there is no free memory. Although this function
* %NULL is returned if there is no free memory. Although this function
* allocates memory it can be called from an interrupt.
*/
static inline struct sk_buff *dev_alloc_skb(unsigned int length)

3
net/core/dst.c
View File

@ -95,12 +95,11 @@ static void dst_run_gc(unsigned long dummy)
dst_gc_timer_inc = DST_GC_INC;
dst_gc_timer_expires = DST_GC_MIN;
}
dst_gc_timer.expires = jiffies + dst_gc_timer_expires;
#if RT_CACHE_DEBUG >= 2
printk("dst_total: %d/%d %ld\n",
atomic_read(&dst_total), delayed, dst_gc_timer_expires);
#endif
add_timer(&dst_gc_timer);
mod_timer(&dst_gc_timer, jiffies + dst_gc_timer_expires);
out:
spin_unlock(&dst_lock);

4
net/core/pktgen.c
View File

@ -2149,6 +2149,8 @@ static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
skb->mac.raw = ((u8 *) iph) - 14 - pkt_dev->nr_labels*sizeof(u32);
skb->dev = odev;
skb->pkt_type = PACKET_HOST;
skb->nh.iph = iph;
skb->h.uh = udph;
if (pkt_dev->nfrags <= 0)
pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
@ -2460,6 +2462,8 @@ static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
skb->protocol = protocol;
skb->dev = odev;
skb->pkt_type = PACKET_HOST;
skb->nh.ipv6h = iph;
skb->h.uh = udph;
if (pkt_dev->nfrags <= 0)
pgh = (struct pktgen_hdr *)skb_put(skb, datalen);

15
net/core/rtnetlink.c
View File

@ -394,6 +394,9 @@ static int do_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
}
if (ida[IFLA_ADDRESS - 1]) {
struct sockaddr *sa;
int len;
if (!dev->set_mac_address) {
err = -EOPNOTSUPP;
goto out;
@ -405,7 +408,17 @@ static int do_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
if (ida[IFLA_ADDRESS - 1]->rta_len != RTA_LENGTH(dev->addr_len))
goto out;
err = dev->set_mac_address(dev, RTA_DATA(ida[IFLA_ADDRESS - 1]));
len = sizeof(sa_family_t) + dev->addr_len;
sa = kmalloc(len, GFP_KERNEL);
if (!sa) {
err = -ENOMEM;
goto out;
}
sa->sa_family = dev->type;
memcpy(sa->sa_data, RTA_DATA(ida[IFLA_ADDRESS - 1]),
dev->addr_len);
err = dev->set_mac_address(dev, sa);
kfree(sa);
if (err)
goto out;
send_addr_notify = 1;

4
net/core/skbuff.c
View File

@ -268,8 +268,10 @@ struct sk_buff *__netdev_alloc_skb(struct net_device *dev,
struct sk_buff *skb;
skb = alloc_skb(length + NET_SKB_PAD, gfp_mask);
if (likely(skb))
if (likely(skb)) {
skb_reserve(skb, NET_SKB_PAD);
skb->dev = dev;
}
return skb;
}

2
net/ipv4/route.c
View File

@ -3157,7 +3157,7 @@ int __init ip_rt_init(void)
rhash_entries,
(num_physpages >= 128 * 1024) ?
15 : 17,
HASH_HIGHMEM,
0,
&rt_hash_log,
&rt_hash_mask,
0);

12
net/ipv4/tcp_output.c
View File

@ -466,7 +466,8 @@ static int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb, int clone_it,
if (skb->len != tcp_header_size)
tcp_event_data_sent(tp, skb, sk);
TCP_INC_STATS(TCP_MIB_OUTSEGS);
if (after(tcb->end_seq, tp->snd_nxt) || tcb->seq == tcb->end_seq)
TCP_INC_STATS(TCP_MIB_OUTSEGS);
err = icsk->icsk_af_ops->queue_xmit(skb, 0);
if (likely(err <= 0))
@ -2157,10 +2158,9 @@ int tcp_connect(struct sock *sk)
skb_shinfo(buff)->gso_size = 0;
skb_shinfo(buff)->gso_type = 0;
buff->csum = 0;
tp->snd_nxt = tp->write_seq;
TCP_SKB_CB(buff)->seq = tp->write_seq++;
TCP_SKB_CB(buff)->end_seq = tp->write_seq;
tp->snd_nxt = tp->write_seq;
tp->pushed_seq = tp->write_seq;
/* Send it off. */
TCP_SKB_CB(buff)->when = tcp_time_stamp;
@ -2170,6 +2170,12 @@ int tcp_connect(struct sock *sk)
sk_charge_skb(sk, buff);
tp->packets_out += tcp_skb_pcount(buff);
tcp_transmit_skb(sk, buff, 1, GFP_KERNEL);
/* We change tp->snd_nxt after the tcp_transmit_skb() call
* in order to make this packet get counted in tcpOutSegs.
*/
tp->snd_nxt = tp->write_seq;
tp->pushed_seq = tp->write_seq;
TCP_INC_STATS(TCP_MIB_ACTIVEOPENS);
/* Timer for repeating the SYN until an answer. */

10
net/ipx/af_ipx.c
View File

@ -1642,13 +1642,17 @@ static int ipx_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_ty
if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL)
goto out;
ipx = ipx_hdr(skb);
ipx_pktsize = ntohs(ipx->ipx_pktsize);
if (!pskb_may_pull(skb, sizeof(struct ipxhdr)))
goto drop;
ipx_pktsize = ntohs(ipxhdr(skb)->ipx_pktsize);
/* Too small or invalid header? */
if (ipx_pktsize < sizeof(struct ipxhdr) || ipx_pktsize > skb->len)
if (ipx_pktsize < sizeof(struct ipxhdr) ||
!pskb_may_pull(skb, ipx_pktsize))
goto drop;
ipx = ipx_hdr(skb);
if (ipx->ipx_checksum != IPX_NO_CHECKSUM &&
ipx->ipx_checksum != ipx_cksum(ipx, ipx_pktsize))
goto drop;