Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d12af679bcf8995a237560bdf7a4d734f8df5dbb
Commit: d12af679bcf8995a237560bdf7a4d734f8df5dbb
Parent: f5ead5cefc1129d5f001728004ed0f38d5875c02
Author: Eric W. Biederman <[EMAIL PROTECTED]>
AuthorDate: Thu Oct 18 03:05:25 2007 -0700
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Thu Oct 18 14:37:22 2007 -0700
sysctl: fix neighbour table sysctls.
- In ipv6 ndisc_ifinfo_syctl_change so it doesn't depend on binary
sysctl names for a function that works with proc.
- In neighbour.c reorder the table to put the possibly unused entries
at the end so we can remove them by terminating the table early.
- In neighbour.c kill the entries with questionable binary sysctl
handling behavior.
- In neighbour.c if we don't have a strategy routine remove the
binary path. So we don't the default sysctl strategy routine
on data that is not ready for it.
Signed-off-by: Eric W. Biederman <[EMAIL PROTECTED]>
Cc: Alexey Dobriyan <[EMAIL PROTECTED]>
Cc: "David S. Miller" <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
net/core/neighbour.c | 75 ++++++++++++++++++++++++++------------------------
net/ipv6/ndisc.c | 24 ++++++---------
2 files changed, 49 insertions(+), 50 deletions(-)
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index cd3af59..67ba991 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -2496,7 +2496,6 @@ static struct neigh_sysctl_table {
.proc_handler = &proc_dointvec,
},
{
- .ctl_name = NET_NEIGH_RETRANS_TIME,
.procname = "retrans_time",
.maxlen = sizeof(int),
.mode = 0644,
@@ -2541,27 +2540,40 @@ static struct neigh_sysctl_table {
.proc_handler = &proc_dointvec,
},
{
- .ctl_name = NET_NEIGH_ANYCAST_DELAY,
.procname = "anycast_delay",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_userhz_jiffies,
},
{
- .ctl_name = NET_NEIGH_PROXY_DELAY,
.procname = "proxy_delay",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_userhz_jiffies,
},
{
- .ctl_name = NET_NEIGH_LOCKTIME,
.procname = "locktime",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_userhz_jiffies,
},
{
+ .ctl_name = NET_NEIGH_RETRANS_TIME_MS,
+ .procname = "retrans_time_ms",
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec_ms_jiffies,
+ .strategy = &sysctl_ms_jiffies,
+ },
+ {
+ .ctl_name = NET_NEIGH_REACHABLE_TIME_MS,
+ .procname = "base_reachable_time_ms",
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec_ms_jiffies,
+ .strategy = &sysctl_ms_jiffies,
+ },
+ {
.ctl_name = NET_NEIGH_GC_INTERVAL,
.procname = "gc_interval",
.maxlen = sizeof(int),
@@ -2590,22 +2602,7 @@ static struct neigh_sysctl_table {
.mode = 0644,
.proc_handler = &proc_dointvec,
},
- {
- .ctl_name = NET_NEIGH_RETRANS_TIME_MS,
- .procname = "retrans_time_ms",
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_dointvec_ms_jiffies,
- .strategy = &sysctl_ms_jiffies,
- },
- {
- .ctl_name = NET_NEIGH_REACHABLE_TIME_MS,
- .procname = "base_reachable_time_ms",
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_dointvec_ms_jiffies,
- .strategy = &sysctl_ms_jiffies,
- },
+ {}
},
.neigh_dev = {
{
@@ -2658,42 +2655,48 @@ int neigh_sysctl_register(struct net_device *dev,
struct neigh_parms *p,
t->neigh_vars[9].data = &p->anycast_delay;
t->neigh_vars[10].data = &p->proxy_delay;
t->neigh_vars[11].data = &p->locktime;
+ t->neigh_vars[12].data = &p->retrans_time;
+ t->neigh_vars[13].data = &p->base_reachable_time;
if (dev) {
dev_name_source = dev->name;
t->neigh_dev[0].ctl_name = dev->ifindex;
- t->neigh_vars[12].procname = NULL;
- t->neigh_vars[13].procname = NULL;
- t->neigh_vars[14].procname = NULL;
- t->neigh_vars[15].procname = NULL;
+ /* Terminate the table early */
+ memset(&t->neigh_vars[14], 0, sizeof(t->neigh_vars[14]));
} else {
dev_name_source = t->neigh_dev[0].procname;
- t->neigh_vars[12].data = (int *)(p + 1);
- t->neigh_vars[13].data = (int *)(p + 1) + 1;
- t->neigh_vars[14].data = (int *)(p + 1) + 2;
- t->neigh_vars[15].data = (int *)(p + 1) + 3;
+ t->neigh_vars[14].data = (int *)(p + 1);
+ t->neigh_vars[15].data = (int *)(p + 1) + 1;
+ t->neigh_vars[16].data = (int *)(p + 1) + 2;
+ t->neigh_vars[17].data = (int *)(p + 1) + 3;
}
- t->neigh_vars[16].data = &p->retrans_time;
- t->neigh_vars[17].data = &p->base_reachable_time;
if (handler || strategy) {
/* RetransTime */
t->neigh_vars[3].proc_handler = handler;
t->neigh_vars[3].strategy = strategy;
t->neigh_vars[3].extra1 = dev;
+ if (!strategy)
+ t->neigh_vars[3].ctl_name = CTL_UNNUMBERED;
/* ReachableTime */
t->neigh_vars[4].proc_handler = handler;
t->neigh_vars[4].strategy = strategy;
t->neigh_vars[4].extra1 = dev;
+ if (!strategy)
+ t->neigh_vars[4].ctl_name = CTL_UNNUMBERED;
/* RetransTime (in milliseconds)*/
- t->neigh_vars[16].proc_handler = handler;
- t->neigh_vars[16].strategy = strategy;
- t->neigh_vars[16].extra1 = dev;
+ t->neigh_vars[12].proc_handler = handler;
+ t->neigh_vars[12].strategy = strategy;
+ t->neigh_vars[12].extra1 = dev;
+ if (!strategy)
+ t->neigh_vars[12].ctl_name = CTL_UNNUMBERED;
/* ReachableTime (in milliseconds) */
- t->neigh_vars[17].proc_handler = handler;
- t->neigh_vars[17].strategy = strategy;
- t->neigh_vars[17].extra1 = dev;
+ t->neigh_vars[13].proc_handler = handler;
+ t->neigh_vars[13].strategy = strategy;
+ t->neigh_vars[13].extra1 = dev;
+ if (!strategy)
+ t->neigh_vars[13].ctl_name = CTL_UNNUMBERED;
}
dev_name = kstrdup(dev_name_source, GFP_KERNEL);
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 6cc33dc..20cfc90 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -1658,30 +1658,26 @@ int ndisc_ifinfo_sysctl_change(struct ctl_table *ctl,
int write, struct file * f
struct inet6_dev *idev;
int ret;
- if (ctl->ctl_name == NET_NEIGH_RETRANS_TIME ||
- ctl->ctl_name == NET_NEIGH_REACHABLE_TIME)
+ if ((strcmp(ctl->procname, "retrans_time") == 0) ||
+ (strcmp(ctl->procname, "base_reachable_time") == 0))
ndisc_warn_deprecated_sysctl(ctl, "syscall", dev ? dev->name :
"default");
- switch (ctl->ctl_name) {
- case NET_NEIGH_RETRANS_TIME:
+ if (strcmp(ctl->procname, "retrans_time") == 0)
ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
- break;
- case NET_NEIGH_REACHABLE_TIME:
+
+ else if (strcmp(ctl->procname, "base_reachable_time") == 0)
ret = proc_dointvec_jiffies(ctl, write,
filp, buffer, lenp, ppos);
- break;
- case NET_NEIGH_RETRANS_TIME_MS:
- case NET_NEIGH_REACHABLE_TIME_MS:
+
+ else if ((strcmp(ctl->procname, "retrans_time_ms") == 0) ||
+ (strcmp(ctl->procname, "base_reacable_time_ms") == 0))
ret = proc_dointvec_ms_jiffies(ctl, write,
filp, buffer, lenp, ppos);
- break;
- default:
+ else
ret = -1;
- }
if (write && ret == 0 && dev && (idev = in6_dev_get(dev)) != NULL) {
- if (ctl->ctl_name == NET_NEIGH_REACHABLE_TIME ||
- ctl->ctl_name == NET_NEIGH_REACHABLE_TIME_MS)
+ if (ctl->data == &idev->nd_parms->base_reachable_time)
idev->nd_parms->reachable_time =
neigh_rand_reach_time(idev->nd_parms->base_reachable_time);
idev->tstamp = jiffies;
inet6_ifinfo_notify(RTM_NEWLINK, idev);
-
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