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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2012-02-21 10:46:49 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-02-22 02:23:25 -0500 |
| commit | 597cdbc2239e6019bbb2dd73b266f436166f0427 (patch) | |
| tree | b6c25dddc2987c9e7811d826f991dd6407783b7f /net/atm | |
| parent | a5e7424d424f6398a198ead79d99e0a3c2f24ce8 (diff) | |
| download | linux-stable-597cdbc2239e6019bbb2dd73b266f436166f0427.tar.gz linux-stable-597cdbc2239e6019bbb2dd73b266f436166f0427.tar.bz2 linux-stable-597cdbc2239e6019bbb2dd73b266f436166f0427.zip | |
atm: clip: remove clip_tbl
Commit 32092ecf0644 (atm: clip: Use device neigh support on top of
"arp_tbl".) introduced a bug since clip_tbl is zeroed : Crash occurs in
__neigh_for_each_release()
idle_timer_check() must use instead arp_tbl and neigh_check_cb() should
ignore non clip neighbours.
Idea from David Miller.
Reported-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Tested-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/atm')
| -rw-r--r-- | net/atm/clip.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/net/atm/clip.c b/net/atm/clip.c index c12c2582457c..127fe70a1baa 100644 --- a/net/atm/clip.c +++ b/net/atm/clip.c @@ -46,8 +46,8 @@ static struct net_device *clip_devs; static struct atm_vcc *atmarpd; -static struct neigh_table clip_tbl; static struct timer_list idle_timer; +static const struct neigh_ops clip_neigh_ops; static int to_atmarpd(enum atmarp_ctrl_type type, int itf, __be32 ip) { @@ -123,6 +123,8 @@ static int neigh_check_cb(struct neighbour *n) struct atmarp_entry *entry = neighbour_priv(n); struct clip_vcc *cv; + if (n->ops != &clip_neigh_ops) + return 0; for (cv = entry->vccs; cv; cv = cv->next) { unsigned long exp = cv->last_use + cv->idle_timeout; @@ -154,10 +156,10 @@ static int neigh_check_cb(struct neighbour *n) static void idle_timer_check(unsigned long dummy) { - write_lock(&clip_tbl.lock); - __neigh_for_each_release(&clip_tbl, neigh_check_cb); + write_lock(&arp_tbl.lock); + __neigh_for_each_release(&arp_tbl, neigh_check_cb); mod_timer(&idle_timer, jiffies + CLIP_CHECK_INTERVAL * HZ); - write_unlock(&clip_tbl.lock); + write_unlock(&arp_tbl.lock); } static int clip_arp_rcv(struct sk_buff *skb) |