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netfilter: flowtable: add xmit path types

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Add the xmit_type field that defines the two supported xmit paths in the
flowtable data plane, which are the neighbour and the xfrm xmit paths.
This patch prepares for new flowtable xmit path types to come.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pablo Neira Ayuso
2021-03-24 02:30:38 +01:00
committed by David S. Miller
parent 0994d492a1
commit 5139c0c007
4 changed files with 36 additions and 10 deletions
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11
include/net/netfilter/nf_flow_table.h
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@@ -89,6 +89,11 @@ enum flow_offload_tuple_dir {
};
#define FLOW_OFFLOAD_DIR_MAX IP_CT_DIR_MAX
enum flow_offload_xmit_type {
FLOW_OFFLOAD_XMIT_NEIGH = 0,
FLOW_OFFLOAD_XMIT_XFRM,
};
struct flow_offload_tuple {
union {
struct in_addr src_v4;
@@ -111,7 +116,8 @@ struct flow_offload_tuple {
/* All members above are keys for lookups, see flow_offload_hash(). */
struct { } __hash;
u8 dir;
u8 dir:6,
xmit_type:2;
u16 mtu;
@@ -158,7 +164,8 @@ static inline __s32 nf_flow_timeout_delta(unsigned int timeout)
struct nf_flow_route {
struct {
struct dst_entry *dst;
struct dst_entry *dst;
enum flow_offload_xmit_type xmit_type;
} tuple[FLOW_OFFLOAD_DIR_MAX];
};