diff options
| author | Bart De Schuymer <bdschuym@pandora.be> | 2006-10-02 16:12:52 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-10-04 00:30:57 -0700 |
| commit | b18dfa90c008850e0f3bfd63638dd8fbe8e08701 (patch) | |
| tree | 5d2683760ae0430f068f1d0f9ba686b3de029093 /net | |
| parent | 9d02002d2dc2c7423e5891b97727fde4d667adf1 (diff) | |
| download | linux-b18dfa90c008850e0f3bfd63638dd8fbe8e08701.tar.gz | |
[NETFILTER]: ebt_mark: add or/and/xor action support to mark target
The following patch adds or/and/xor functionality for the mark target, while staying backwards compatible. Signed-off-by: Bart De Schuymer <bdschuym@pandora.be> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/bridge/netfilter/ebt_mark.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/net/bridge/netfilter/ebt_mark.c b/net/bridge/netfilter/ebt_mark.c index 770c0df972a3..b54306a934e5 100644 --- a/net/bridge/netfilter/ebt_mark.c +++ b/net/bridge/netfilter/ebt_mark.c @@ -22,24 +22,37 @@ static int ebt_target_mark(struct sk_buff **pskb, unsigned int hooknr, const void *data, unsigned int datalen) { struct ebt_mark_t_info *info = (struct ebt_mark_t_info *)data; + int action = info->target & -16; - if ((*pskb)->nfmark != info->mark) + if (action == MARK_SET_VALUE) (*pskb)->nfmark = info->mark; + else if (action == MARK_OR_VALUE) + (*pskb)->nfmark |= info->mark; + else if (action == MARK_AND_VALUE) + (*pskb)->nfmark &= info->mark; + else + (*pskb)->nfmark ^= info->mark; - return info->target; + return info->target | -16; } static int ebt_target_mark_check(const char *tablename, unsigned int hookmask, const struct ebt_entry *e, void *data, unsigned int datalen) { struct ebt_mark_t_info *info = (struct ebt_mark_t_info *)data; + int tmp; if (datalen != EBT_ALIGN(sizeof(struct ebt_mark_t_info))) return -EINVAL; - if (BASE_CHAIN && info->target == EBT_RETURN) + tmp = info->target | -16; + if (BASE_CHAIN && tmp == EBT_RETURN) return -EINVAL; CLEAR_BASE_CHAIN_BIT; - if (INVALID_TARGET) + if (tmp < -NUM_STANDARD_TARGETS || tmp >= 0) + return -EINVAL; + tmp = info->target & -16; + if (tmp != MARK_SET_VALUE && tmp != MARK_OR_VALUE && + tmp != MARK_AND_VALUE && tmp != MARK_XOR_VALUE) return -EINVAL; return 0; } |