neigh: sysctl - simplify address calculation of gc_* variables

The code in neigh_sysctl_register() relies on a specific layout of
struct neigh_table, namely that the 'gc_*' variables are directly
following the 'parms' member in a specific order. The code, though,
expresses this in the most ugly way.

Get rid of the ugly casts and use the 'tbl' pointer to get a handle to
the table. This way we can refer to the 'gc_*' variables directly.

Similarly seen in the grsecurity patch, written by Brad Spengler.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Brad Spengler <spender@grsecurity.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Mathias Krause
2014-07-12 22:36:44 +02:00
committed by David S. Miller
parent 8f2e5ae40e
commit 9ecf07a1d8
2 changed files with 5 additions and 5 deletions

View File

@@ -203,7 +203,6 @@ struct neigh_table {
void (*proxy_redo)(struct sk_buff *skb);
char *id;
struct neigh_parms parms;
/* HACK. gc_* should follow parms without a gap! */
int gc_interval;
int gc_thresh1;
int gc_thresh2;