xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[INET]: Collect common frag sysctl variables together

Browse Source 
Some sysctl variables are used to tune the frag queues
management and it will be useful to work with them in
a common way in the future, so move them into one
structure, moreover they are the same for all the frag
management codes.

I don't place them in the existing inet_frags object,
introduced in the previous patch for two reasons:

 1. to keep them in the __read_mostly section;
 2. not to export the whole inet_frags objects outside.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Emelyanov
2007-10-15 02:33:45 -07:00
committed by David S. Miller
parent 7eb95156d9
commit 04128f233f
10 changed files with 82 additions and 69 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
net/ipv6/reassembly.c
View File

@@ -56,11 +56,6 @@
#include <net/addrconf.h>
#include <net/inet_frag.h>
int sysctl_ip6frag_high_thresh __read_mostly = 256*1024;
int sysctl_ip6frag_low_thresh __read_mostly = 192*1024;
int sysctl_ip6frag_time __read_mostly = IPV6_FRAG_TIMEOUT;
struct ip6frag_skb_cb
{
struct inet6_skb_parm h;
@@ -87,6 +82,13 @@ struct frag_queue
__u16 nhoffset;
};
struct inet_frags_ctl ip6_frags_ctl __read_mostly = {
.high_thresh = 256 * 1024,
.low_thresh = 192 * 1024,
.timeout = IPV6_FRAG_TIMEOUT,
.secret_interval = 10 * 60 * HZ,
};
static struct inet_frags ip6_frags;
int ip6_frag_nqueues(void)
@@ -147,8 +149,6 @@ static unsigned int ip6qhashfn(__be32 id, struct in6_addr *saddr,
return c & (INETFRAGS_HASHSZ - 1);
}
int sysctl_ip6frag_secret_interval __read_mostly = 10 * 60 * HZ;
static void ip6_frag_secret_rebuild(unsigned long dummy)
{
unsigned long now = jiffies;
@@ -177,7 +177,7 @@ static void ip6_frag_secret_rebuild(unsigned long dummy)
}
write_unlock(&ip6_frags.lock);
mod_timer(&ip6_frags.secret_timer, now + sysctl_ip6frag_secret_interval);
mod_timer(&ip6_frags.secret_timer, now + ip6_frags_ctl.secret_interval);
}
/* Memory Tracking Functions. */
@@ -256,7 +256,7 @@ static void ip6_evictor(struct inet6_dev *idev)
struct list_head *tmp;
int work;
work = atomic_read(&ip6_frags.mem) - sysctl_ip6frag_low_thresh;
work = atomic_read(&ip6_frags.mem) - ip6_frags_ctl.low_thresh;
if (work <= 0)
return;
@@ -348,7 +348,7 @@ static struct frag_queue *ip6_frag_intern(struct frag_queue *fq_in)
#endif
fq = fq_in;
if (!mod_timer(&fq->q.timer, jiffies + sysctl_ip6frag_time))
if (!mod_timer(&fq->q.timer, jiffies + ip6_frags_ctl.timeout))
atomic_inc(&fq->q.refcnt);
atomic_inc(&fq->q.refcnt);
@@ -754,7 +754,7 @@ static int ipv6_frag_rcv(struct sk_buff **skbp)
return 1;
}
if (atomic_read(&ip6_frags.mem) > sysctl_ip6frag_high_thresh)
if (atomic_read(&ip6_frags.mem) > ip6_frags_ctl.high_thresh)
ip6_evictor(ip6_dst_idev(skb->dst));
if ((fq = fq_find(fhdr->identification, &hdr->saddr, &hdr->daddr,
@@ -788,8 +788,9 @@ void __init ipv6_frag_init(void)
init_timer(&ip6_frags.secret_timer);
ip6_frags.secret_timer.function = ip6_frag_secret_rebuild;
ip6_frags.secret_timer.expires = jiffies + sysctl_ip6frag_secret_interval;
ip6_frags.secret_timer.expires = jiffies + ip6_frags_ctl.secret_interval;
add_timer(&ip6_frags.secret_timer);
ip6_frags.ctl = &ip6_frags_ctl;
inet_frags_init(&ip6_frags);
}