6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Florian Westphal <fw@xxxxxxxxx>
[ Upstream commit 8965d42bcf54d42cbc72fe34a9d0ec3f8527debd ]
It would be better to not store nft_ctx inside nft_trans object,
the netlink ctx strucutre is huge and most of its information is
never needed in places that use trans->ctx.
Avoid/reduce its usage if possible, no runtime behaviour change
intended.
Signed-off-by: Florian Westphal <fw@xxxxxxxxx>
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
Stable-dep-of: c03d278fdf35 ("netfilter: nf_tables: wait for rcu grace period on net_device removal")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
include/net/netfilter/nf_tables.h | 2 +-
net/netfilter/nf_tables_api.c | 17 ++++++++---------
net/netfilter/nft_immediate.c | 2 +-
3 files changed, 10 insertions(+), 11 deletions(-)
diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
index af62804b27ec7..b5f9ee5810a34 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -1157,7 +1157,7 @@ static inline bool nft_chain_is_bound(struct nft_chain *chain)
int nft_chain_add(struct nft_table *table, struct nft_chain *chain);
void nft_chain_del(struct nft_chain *chain);
-void nf_tables_chain_destroy(struct nft_ctx *ctx);
+void nf_tables_chain_destroy(struct nft_chain *chain);
struct nft_stats {
u64 bytes;
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index aacb0d7f82e9f..eff94dcb49090 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -2068,9 +2068,9 @@ static void nf_tables_chain_free_chain_rules(struct nft_chain *chain)
kvfree(chain->blob_next);
}
-void nf_tables_chain_destroy(struct nft_ctx *ctx)
+void nf_tables_chain_destroy(struct nft_chain *chain)
{
- struct nft_chain *chain = ctx->chain;
+ const struct nft_table *table = chain->table;
struct nft_hook *hook, *next;
if (WARN_ON(chain->use > 0))
@@ -2082,7 +2082,7 @@ void nf_tables_chain_destroy(struct nft_ctx *ctx)
if (nft_is_base_chain(chain)) {
struct nft_base_chain *basechain = nft_base_chain(chain);
- if (nft_base_chain_netdev(ctx->family, basechain->ops.hooknum)) {
+ if (nft_base_chain_netdev(table->family, basechain->ops.hooknum)) {
list_for_each_entry_safe(hook, next,
&basechain->hook_list, list) {
list_del_rcu(&hook->list);
@@ -2571,7 +2571,7 @@ static int nf_tables_addchain(struct nft_ctx *ctx, u8 family, u8 genmask,
err_trans:
nft_use_dec_restore(&table->use);
err_destroy_chain:
- nf_tables_chain_destroy(ctx);
+ nf_tables_chain_destroy(chain);
return err;
}
@@ -9415,7 +9415,7 @@ static void nft_commit_release(struct nft_trans *trans)
if (nft_trans_chain_update(trans))
nft_hooks_destroy(&nft_trans_chain_hooks(trans));
else
- nf_tables_chain_destroy(&trans->ctx);
+ nf_tables_chain_destroy(nft_trans_chain(trans));
break;
case NFT_MSG_DELRULE:
case NFT_MSG_DESTROYRULE:
@@ -10406,7 +10406,7 @@ static void nf_tables_abort_release(struct nft_trans *trans)
if (nft_trans_chain_update(trans))
nft_hooks_destroy(&nft_trans_chain_hooks(trans));
else
- nf_tables_chain_destroy(&trans->ctx);
+ nf_tables_chain_destroy(nft_trans_chain(trans));
break;
case NFT_MSG_NEWRULE:
nf_tables_rule_destroy(&trans->ctx, nft_trans_rule(trans));
@@ -11144,7 +11144,7 @@ int __nft_release_basechain(struct nft_ctx *ctx)
}
nft_chain_del(ctx->chain);
nft_use_dec(&ctx->table->use);
- nf_tables_chain_destroy(ctx);
+ nf_tables_chain_destroy(ctx->chain);
return 0;
}
@@ -11219,10 +11219,9 @@ static void __nft_release_table(struct net *net, struct nft_table *table)
nft_obj_destroy(&ctx, obj);
}
list_for_each_entry_safe(chain, nc, &table->chains, list) {
- ctx.chain = chain;
nft_chain_del(chain);
nft_use_dec(&table->use);
- nf_tables_chain_destroy(&ctx);
+ nf_tables_chain_destroy(chain);
}
nf_tables_table_destroy(&ctx);
}
diff --git a/net/netfilter/nft_immediate.c b/net/netfilter/nft_immediate.c
index 6475c7abc1fe3..ac2422c215e54 100644
--- a/net/netfilter/nft_immediate.c
+++ b/net/netfilter/nft_immediate.c
@@ -221,7 +221,7 @@ static void nft_immediate_destroy(const struct nft_ctx *ctx,
list_del(&rule->list);
nf_tables_rule_destroy(&chain_ctx, rule);
}
- nf_tables_chain_destroy(&chain_ctx);
+ nf_tables_chain_destroy(chain);
break;
default:
break;
--
2.43.0
