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netfilter: nft_compat: call {target, match}->destroy() to cleanup entry 

Otherwise, the reference to external objects (eg. modules) are not
released when the rules are removed.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
hifive-unleashed-5.1
Pablo Neira Ayuso 2014-06-11 14:27:46 +02:00
parent ac904ac835
commit 3d9b142131
1 changed files with 18 additions and 0 deletions
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18
net/netfilter/nft_compat.c
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@ -195,6 +195,15 @@ static void
nft_target_destroy(const struct nft_ctx *ctx, const struct nft_expr *expr)
{
struct xt_target *target = expr->ops->data;
void *info = nft_expr_priv(expr);
struct xt_tgdtor_param par;
par.net = ctx->net;
par.target = target;
par.targinfo = info;
par.family = ctx->afi->family;
if (par.target->destroy != NULL)
par.target->destroy(&par);
module_put(target->me);
}
@ -382,6 +391,15 @@ static void
nft_match_destroy(const struct nft_ctx *ctx, const struct nft_expr *expr)
{
struct xt_match *match = expr->ops->data;
void *info = nft_expr_priv(expr);
struct xt_mtdtor_param par;
par.net = ctx->net;
par.match = match;
par.matchinfo = info;
par.family = ctx->afi->family;
if (par.match->destroy != NULL)
par.match->destroy(&par);
module_put(match->me);
}