return true;
}
+static void nft_meta_store_ifindex(u32 *dest, const struct net_device *dev)
+{
+ *dest = dev ? dev->ifindex : 0;
+}
+
+static void nft_meta_store_ifname(u32 *dest, const struct net_device *dev)
+{
+ strncpy((char *)dest, dev ? dev->name : "", IFNAMSIZ);
+}
+
+static bool nft_meta_store_iftype(u32 *dest, const struct net_device *dev)
+{
+ if (!dev)
+ return false;
+
+ nft_reg_store16(dest, dev->type);
+ return true;
+}
+
+static bool nft_meta_store_ifgroup(u32 *dest, const struct net_device *dev)
+{
+ if (!dev)
+ return false;
+
+ *dest = dev->group;
+ return true;
+}
+
+static bool nft_meta_get_eval_ifname(enum nft_meta_keys key, u32 *dest,
+ const struct nft_pktinfo *pkt)
+{
+ switch (key) {
+ case NFT_META_IIFNAME:
+ nft_meta_store_ifname(dest, nft_in(pkt));
+ break;
+ case NFT_META_OIFNAME:
+ nft_meta_store_ifname(dest, nft_out(pkt));
+ break;
+ case NFT_META_IIF:
+ nft_meta_store_ifindex(dest, nft_in(pkt));
+ break;
+ case NFT_META_OIF:
+ nft_meta_store_ifindex(dest, nft_out(pkt));
+ break;
+ case NFT_META_IIFTYPE:
+ if (!nft_meta_store_iftype(dest, nft_in(pkt)))
+ return false;
+ break;
+ case NFT_META_OIFTYPE:
+ if (!nft_meta_store_iftype(dest, nft_out(pkt)))
+ return false;
+ break;
+ case NFT_META_IIFGROUP:
+ if (!nft_meta_store_ifgroup(dest, nft_out(pkt)))
+ return false;
+ break;
+ case NFT_META_OIFGROUP:
+ if (!nft_meta_store_ifgroup(dest, nft_out(pkt)))
+ return false;
+ break;
+ default:
+ return false;
+ }
+
+ return true;
+}
+
void nft_meta_get_eval(const struct nft_expr *expr,
struct nft_regs *regs,
const struct nft_pktinfo *pkt)
{
const struct nft_meta *priv = nft_expr_priv(expr);
const struct sk_buff *skb = pkt->skb;
- const struct net_device *in = nft_in(pkt), *out = nft_out(pkt);
u32 *dest = ®s->data[priv->dreg];
switch (priv->key) {
*dest = skb->mark;
break;
case NFT_META_IIF:
- *dest = in ? in->ifindex : 0;
- break;
case NFT_META_OIF:
- *dest = out ? out->ifindex : 0;
- break;
case NFT_META_IIFNAME:
- strncpy((char *)dest, in ? in->name : "", IFNAMSIZ);
- break;
case NFT_META_OIFNAME:
- strncpy((char *)dest, out ? out->name : "", IFNAMSIZ);
- break;
case NFT_META_IIFTYPE:
- if (in == NULL)
- goto err;
- nft_reg_store16(dest, in->type);
- break;
case NFT_META_OIFTYPE:
- if (out == NULL)
+ case NFT_META_IIFGROUP:
+ case NFT_META_OIFGROUP:
+ if (!nft_meta_get_eval_ifname(priv->key, dest, pkt))
goto err;
- nft_reg_store16(dest, out->type);
break;
case NFT_META_SKUID:
case NFT_META_SKGID:
case NFT_META_CPU:
*dest = raw_smp_processor_id();
break;
- case NFT_META_IIFGROUP:
- if (in == NULL)
- goto err;
- *dest = in->group;
- break;
- case NFT_META_OIFGROUP:
- if (out == NULL)
- goto err;
- *dest = out->group;
- break;
#ifdef CONFIG_CGROUP_NET_CLASSID
case NFT_META_CGROUP:
if (!nft_meta_get_eval_cgroup(dest, pkt))