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[NET]: Store skb->timestamp as offset to a base timestamp

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Reduces skb size by 8 bytes on 64-bit.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy
2005-08-14 17:24:31 -07:00
committed by David S. Miller
parent 25ed891019
commit a61bbcf28a
39 changed files with 172 additions and 88 deletions
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4
net/ipv4/arp.c
View File

@@ -865,7 +865,7 @@ static int arp_process(struct sk_buff *skb)
if (n)
neigh_release(n);
if (skb->stamp.tv_sec == LOCALLY_ENQUEUED ||
if (NEIGH_CB(skb)->flags & LOCALLY_ENQUEUED ||
skb->pkt_type == PACKET_HOST ||
in_dev->arp_parms->proxy_delay == 0) {
arp_send(ARPOP_REPLY,ETH_P_ARP,sip,dev,tip,sha,dev->dev_addr,sha);
@@ -948,6 +948,8 @@ int arp_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt,
if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL)
goto out_of_mem;
memset(NEIGH_CB(skb), 0, sizeof(struct neighbour_cb));
return NF_HOOK(NF_ARP, NF_ARP_IN, skb, dev, NULL, arp_process);
freeskb:

4
net/ipv4/ip_fragment.c
View File

@@ -533,7 +533,7 @@ static void ip_frag_queue(struct ipq *qp, struct sk_buff *skb)
if (skb->dev)
qp->iif = skb->dev->ifindex;
skb->dev = NULL;
qp->stamp = skb->stamp;
skb_get_timestamp(skb, &qp->stamp);
qp->meat += skb->len;
atomic_add(skb->truesize, &ip_frag_mem);
if (offset == 0)
@@ -615,7 +615,7 @@ static struct sk_buff *ip_frag_reasm(struct ipq *qp, struct net_device *dev)
head->next = NULL;
head->dev = dev;
head->stamp = qp->stamp;
skb_set_timestamp(head, &qp->stamp);
iph = head->nh.iph;
iph->frag_off = 0;

4
net/ipv4/netfilter/ip_queue.c
View File

@@ -240,8 +240,8 @@ ipq_build_packet_message(struct ipq_queue_entry *entry, int *errp)
pmsg->packet_id = (unsigned long )entry;
pmsg->data_len = data_len;
pmsg->timestamp_sec = entry->skb->stamp.tv_sec;
pmsg->timestamp_usec = entry->skb->stamp.tv_usec;
pmsg->timestamp_sec = skb_tv_base.tv_sec + entry->skb->tstamp.off_sec;
pmsg->timestamp_usec = skb_tv_base.tv_usec + entry->skb->tstamp.off_usec;
pmsg->mark = entry->skb->nfmark;
pmsg->hook = entry->info->hook;
pmsg->hw_protocol = entry->skb->protocol;

8
net/ipv4/netfilter/ipt_ULOG.c
View File

@@ -220,13 +220,13 @@ static void ipt_ulog_packet(unsigned int hooknum,
pm = NLMSG_DATA(nlh);
/* We might not have a timestamp, get one */
if (skb->stamp.tv_sec == 0)
do_gettimeofday((struct timeval *)&skb->stamp);
if (skb->tstamp.off_sec == 0)
__net_timestamp((struct sk_buff *)skb);
/* copy hook, prefix, timestamp, payload, etc. */
pm->data_len = copy_len;
pm->timestamp_sec = skb->stamp.tv_sec;
pm->timestamp_usec = skb->stamp.tv_usec;
pm->timestamp_sec = skb_tv_base.tv_sec + skb->tstamp.off_sec;
pm->timestamp_usec = skb_tv_base.tv_usec + skb->tstamp.off_usec;
pm->mark = skb->nfmark;
pm->hook = hooknum;
if (prefix != NULL)

10
net/ipv4/tcp_input.c
View File

@@ -2097,9 +2097,13 @@ static int tcp_clean_rtx_queue(struct sock *sk, __s32 *seq_rtt_p, s32 *seq_usrtt
seq_rtt = -1;
} else if (seq_rtt < 0)
seq_rtt = now - scb->when;
if (seq_usrtt)
*seq_usrtt = (usnow.tv_sec - skb->stamp.tv_sec) * 1000000
+ (usnow.tv_usec - skb->stamp.tv_usec);
if (seq_usrtt) {
struct timeval tv;
skb_get_timestamp(skb, &tv);
*seq_usrtt = (usnow.tv_sec - tv.tv_sec) * 1000000
+ (usnow.tv_usec - tv.tv_usec);
}
if (sacked & TCPCB_SACKED_ACKED)
tp->sacked_out -= tcp_skb_pcount(skb);

4
net/ipv4/tcp_output.c
View File

@@ -282,7 +282,7 @@ static int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb)
/* If congestion control is doing timestamping */
if (icsk->icsk_ca_ops->rtt_sample)
do_gettimeofday(&skb->stamp);
__net_timestamp(skb);
sysctl_flags = 0;
if (tcb->flags & TCPCB_FLAG_SYN) {
@@ -483,7 +483,7 @@ static int tcp_fragment(struct sock *sk, struct sk_buff *skb, u32 len, unsigned
* skbs, which it never sent before. --ANK
*/
TCP_SKB_CB(buff)->when = TCP_SKB_CB(skb)->when;
buff->stamp = skb->stamp;
buff->tstamp = skb->tstamp;
if (TCP_SKB_CB(skb)->sacked & TCPCB_LOST) {
tp->lost_out -= tcp_skb_pcount(skb);