diff options
Diffstat (limited to 'include/net/esp.h')
| -rw-r--r-- | include/net/esp.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/net/esp.h b/include/net/esp.h index 117652eb6ea3..322950727dd0 100644 --- a/include/net/esp.h +++ b/include/net/esp.h @@ -5,12 +5,29 @@ #include <linux/skbuff.h> struct ip_esp_hdr; +struct xfrm_state; static inline struct ip_esp_hdr *ip_esp_hdr(const struct sk_buff *skb) { return (struct ip_esp_hdr *)skb_transport_header(skb); } +static inline void esp_output_fill_trailer(u8 *tail, int tfclen, int plen, __u8 proto) +{ + /* Fill padding... */ + if (tfclen) { + memset(tail, 0, tfclen); + tail += tfclen; + } + do { + int i; + for (i = 0; i < plen - 2; i++) + tail[i] = i + 1; + } while (0); + tail[plen - 2] = plen - 2; + tail[plen - 1] = proto; +} + struct esp_info { struct ip_esp_hdr *esph; __be64 seqno; |