diff mbox series

[net,1/4] netfilter: nf_tables: reject destroy command to remove basechain hooks

Message ID 20240328031855.2063-2-pablo@netfilter.org
State Accepted
Headers show
Series [net,1/4] netfilter: nf_tables: reject destroy command to remove basechain hooks | expand

Commit Message

Pablo Neira Ayuso March 28, 2024, 3:18 a.m. UTC
Report EOPNOTSUPP if NFT_MSG_DESTROYCHAIN is used to delete hooks in an
existing netdev basechain, thus, only NFT_MSG_DELCHAIN is allowed.

Fixes: 7d937b107108f ("netfilter: nf_tables: support for deleting devices in an existing netdev chain")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
 net/netfilter/nf_tables_api.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Comments

patchwork-bot+netdevbpf@kernel.org March 28, 2024, 9:50 a.m. UTC | #1
Hello:

This series was applied to netdev/net.git (main)
by Pablo Neira Ayuso <pablo@netfilter.org>:

On Thu, 28 Mar 2024 04:18:52 +0100 you wrote:
> Report EOPNOTSUPP if NFT_MSG_DESTROYCHAIN is used to delete hooks in an
> existing netdev basechain, thus, only NFT_MSG_DELCHAIN is allowed.
> 
> Fixes: 7d937b107108f ("netfilter: nf_tables: support for deleting devices in an existing netdev chain")
> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
> ---
>  net/netfilter/nf_tables_api.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)

Here is the summary with links:
  - [net,1/4] netfilter: nf_tables: reject destroy command to remove basechain hooks
    https://git.kernel.org/netdev/net/c/b32ca27fa238
  - [net,2/4] netfilter: nf_tables: reject table flag and netdev basechain updates
    https://git.kernel.org/netdev/net/c/1e1fb6f00f52
  - [net,3/4] netfilter: nf_tables: skip netdev hook unregistration if table is dormant
    https://git.kernel.org/netdev/net/c/216e7bf7402c
  - [net,4/4] netfilter: arptables: Select NETFILTER_FAMILY_ARP when building arp_tables.c
    https://git.kernel.org/netdev/net/c/15fba562f7a9

You are awesome, thank you!
diff mbox series

Patch

diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 5fa3d3540c93..a1a8030e16a5 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -2944,7 +2944,8 @@  static int nf_tables_delchain(struct sk_buff *skb, const struct nfnl_info *info,
 	nft_ctx_init(&ctx, net, skb, info->nlh, family, table, chain, nla);
 
 	if (nla[NFTA_CHAIN_HOOK]) {
-		if (chain->flags & NFT_CHAIN_HW_OFFLOAD)
+		if (NFNL_MSG_TYPE(info->nlh->nlmsg_type) == NFT_MSG_DESTROYCHAIN ||
+		    chain->flags & NFT_CHAIN_HW_OFFLOAD)
 			return -EOPNOTSUPP;
 
 		if (nft_is_base_chain(chain)) {