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/nft_fwd_netdev.c | |
| parent | netfilter: nft_synproxy: add synproxy stateful object support (diff) | |
| download | wireguard-linux-be2861dc36d77ff3778979b9c3c79ada4affa131.tar.xz wireguard-linux-be2861dc36d77ff3778979b9c3c79ada4affa131.zip | |
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/nft_fwd_netdev.c')
| -rw-r--r-- | net/netfilter/nft_fwd_netdev.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/net/netfilter/nft_fwd_netdev.c b/net/netfilter/nft_fwd_netdev.c index 61b7f93ac681..aba11c2333f3 100644 --- a/net/netfilter/nft_fwd_netdev.c +++ b/net/netfilter/nft_fwd_netdev.c @@ -12,6 +12,7 @@ #include <linux/ip.h> #include <linux/ipv6.h> #include <net/netfilter/nf_tables.h> +#include <net/netfilter/nf_tables_offload.h> #include <net/netfilter/nf_dup_netdev.h> #include <net/neighbour.h> #include <net/ip.h> @@ -63,6 +64,16 @@ nla_put_failure: return -1; } +static int nft_fwd_netdev_offload(struct nft_offload_ctx *ctx, + struct nft_flow_rule *flow, + const struct nft_expr *expr) +{ + const struct nft_fwd_netdev *priv = nft_expr_priv(expr); + int oif = ctx->regs[priv->sreg_dev].data.data[0]; + + return nft_fwd_dup_netdev_offload(ctx, flow, FLOW_ACTION_REDIRECT, oif); +} + struct nft_fwd_neigh { enum nft_registers sreg_dev:8; enum nft_registers sreg_addr:8; @@ -194,6 +205,7 @@ static const struct nft_expr_ops nft_fwd_netdev_ops = { .eval = nft_fwd_netdev_eval, .init = nft_fwd_netdev_init, .dump = nft_fwd_netdev_dump, + .offload = nft_fwd_netdev_offload, }; static const struct nft_expr_ops * |