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ipv6: fib: fix fib dump restart

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When the ipv6 fib changes during a table dump, the walk is
restarted and the number of nodes dumped are skipped. But the existing
code doesn't advance to the next node after a node is skipped. This can
cause the dump to loop or produce lots of duplicates when the fib
is modified during the dump.

This change advances the walk to the next node if the current node is
skipped after a restart.

Signed-off-by: Kumar Sundararajan <kumar@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kumar Sundararajan 2014-04-24 09:48:53 -04:00 committed by David S. Miller
parent fc5e88354d
commit 1c26585458
1 changed files with 2 additions and 1 deletions
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3
net/ipv6/ip6_fib.c
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@ -1459,7 +1459,7 @@ static int fib6_walk_continue(struct fib6_walker_t *w)
if (w->skip) {
w->skip--;
continue;
goto skip;
}
err = w->func(w);
@ -1469,6 +1469,7 @@ static int fib6_walk_continue(struct fib6_walker_t *w)
w->count++;
continue;
}
skip:
w->state = FWS_U;
case FWS_U:
if (fn == w->root)