diff options
| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2019-09-08 19:32:05 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2019-09-10 22:44:29 +0200 |
| commit | be2861dc36d77ff3778979b9c3c79ada4affa131 (patch) | |
| tree | abc52830f01ce72c2a9c848e5b047a4cbe5849d2 /net/netfilter/nf_dup_netdev.c | |
| parent | ee394f96ad7517fbc0de9106dcc7ce9efb14f264 (diff) | |
netfilter: nft_{fwd,dup}_netdev: add offload support
This patch adds support for packet mirroring and redirection. The
nft_fwd_dup_netdev_offload() function configures the flow_action object
for the fwd and the dup actions.
Extend nft_flow_rule_destroy() to release the net_device object when the
flow_rule object is released, since nft_fwd_dup_netdev_offload() bumps
the net_device reference counter.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Acked-by: wenxu <wenxu@ucloud.cn>
Diffstat (limited to 'net/netfilter/nf_dup_netdev.c')
| -rw-r--r-- | net/netfilter/nf_dup_netdev.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/net/netfilter/nf_dup_netdev.c b/net/netfilter/nf_dup_netdev.c index 5a35ef08c3cb..f108a76925dd 100644 --- a/net/netfilter/nf_dup_netdev.c +++ b/net/netfilter/nf_dup_netdev.c @@ -10,6 +10,7 @@ #include <linux/netfilter.h> #include <linux/netfilter/nf_tables.h> #include <net/netfilter/nf_tables.h> +#include <net/netfilter/nf_tables_offload.h> #include <net/netfilter/nf_dup_netdev.h> static void nf_do_netdev_egress(struct sk_buff *skb, struct net_device *dev) @@ -50,5 +51,25 @@ void nf_dup_netdev_egress(const struct nft_pktinfo *pkt, int oif) } EXPORT_SYMBOL_GPL(nf_dup_netdev_egress); +int nft_fwd_dup_netdev_offload(struct nft_offload_ctx *ctx, + struct nft_flow_rule *flow, + enum flow_action_id id, int oif) +{ + struct flow_action_entry *entry; + struct net_device *dev; + + /* nft_flow_rule_destroy() releases the reference on this device. */ + dev = dev_get_by_index(ctx->net, oif); + if (!dev) + return -EOPNOTSUPP; + + entry = &flow->rule->action.entries[ctx->num_actions++]; + entry->id = id; + entry->dev = dev; + + return 0; +} +EXPORT_SYMBOL_GPL(nft_fwd_dup_netdev_offload); + MODULE_LICENSE("GPL"); MODULE_AUTHOR("Pablo Neira Ayuso <pablo@netfilter.org>"); |