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| author | Steffen Klassert <steffen.klassert@secunet.com> | 2017-02-15 09:39:54 +0100 |
|---|---|---|
| committer | Steffen Klassert <steffen.klassert@secunet.com> | 2017-02-15 11:04:10 +0100 |
| commit | 54ef207ac8f7a17d677082157a29f4df8499dc81 (patch) | |
| tree | 38ce4d1b10a554617818bb313331482a37156828 /include/net | |
| parent | 1e29537034e388c7e72eac43cfcda1d23131623b (diff) | |
| download | linux-54ef207ac8f7a17d677082157a29f4df8499dc81.tar.bz2 | |
xfrm: Extend the sec_path for IPsec offloading
We need to keep per packet offloading informations across
the layers. So we extend the sec_path to carry these for
the input and output offload codepath.
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/xfrm.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/include/net/xfrm.h b/include/net/xfrm.h index fe8db3d87e4f..10086a0986f8 100644 --- a/include/net/xfrm.h +++ b/include/net/xfrm.h @@ -498,6 +498,7 @@ struct xfrm_tmpl { }; #define XFRM_MAX_DEPTH 6 +#define XFRM_MAX_OFFLOAD_DEPTH 1 struct xfrm_policy_walk_entry { struct list_head all; @@ -973,10 +974,41 @@ static inline void xfrm_dst_destroy(struct xfrm_dst *xdst) void xfrm_dst_ifdown(struct dst_entry *dst, struct net_device *dev); +struct xfrm_offload { + /* Output sequence number for replay protection on offloading. */ + struct { + __u32 low; + __u32 hi; + } seq; + + __u32 flags; +#define SA_DELETE_REQ 1 +#define CRYPTO_DONE 2 +#define CRYPTO_NEXT_DONE 4 +#define CRYPTO_FALLBACK 8 +#define XFRM_GSO_SEGMENT 16 +#define XFRM_GRO 32 + + __u32 status; +#define CRYPTO_SUCCESS 1 +#define CRYPTO_GENERIC_ERROR 2 +#define CRYPTO_TRANSPORT_AH_AUTH_FAILED 4 +#define CRYPTO_TRANSPORT_ESP_AUTH_FAILED 8 +#define CRYPTO_TUNNEL_AH_AUTH_FAILED 16 +#define CRYPTO_TUNNEL_ESP_AUTH_FAILED 32 +#define CRYPTO_INVALID_PACKET_SYNTAX 64 +#define CRYPTO_INVALID_PROTOCOL 128 + + __u8 proto; +}; + struct sec_path { atomic_t refcnt; int len; + int olen; + struct xfrm_state *xvec[XFRM_MAX_DEPTH]; + struct xfrm_offload ovec[XFRM_MAX_OFFLOAD_DEPTH]; }; static inline int secpath_exists(struct sk_buff *skb) @@ -1776,6 +1808,15 @@ static inline struct xfrm_state *xfrm_input_state(struct sk_buff *skb) { return skb->sp->xvec[skb->sp->len - 1]; } +static inline struct xfrm_offload *xfrm_offload(struct sk_buff *skb) +{ + struct sec_path *sp = skb->sp; + + if (!sp || !sp->olen || sp->len != sp->olen) + return NULL; + + return &sp->ovec[sp->olen - 1]; +} #endif static inline int xfrm_mark_get(struct nlattr **attrs, struct xfrm_mark *m) |