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author | Eric W. Biederman <ebiederm@xmission.com> | 2007-10-18 10:05:25 (GMT) |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-18 21:37:22 (GMT) |
commit | d12af679bcf8995a237560bdf7a4d734f8df5dbb (patch) | |
tree | 9cb821d20fa8be39ff4954d7e8f5966ef9d3b7dd | |
parent | f5ead5cefc1129d5f001728004ed0f38d5875c02 (diff) | |
download | linux-fsl-qoriq-d12af679bcf8995a237560bdf7a4d734f8df5dbb.tar.xz |
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 <ebiederm@xmission.com>
Cc: Alexey Dobriyan <adobriyan@sw.ru>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r-- | net/core/neighbour.c | 75 | ||||
-rw-r--r-- | 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); |