diff options
Diffstat (limited to 'src/vnet/ip')
| -rw-r--r-- | src/vnet/ip/ip6_packet.h | 33 |
1 files changed, 30 insertions, 3 deletions
diff --git a/src/vnet/ip/ip6_packet.h b/src/vnet/ip/ip6_packet.h index 4fd14b960e4..6eabeef1f3d 100644 --- a/src/vnet/ip/ip6_packet.h +++ b/src/vnet/ip/ip6_packet.h @@ -448,20 +448,47 @@ always_inline u8 ip6_ext_hdr(u8 nexthdr) * find out if nexthdr is an extension header or a protocol */ return (nexthdr == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) || - (nexthdr == IP_PROTOCOL_IP6_NONXT) || (nexthdr == IP_PROTOCOL_IPV6_FRAGMENTATION) || (nexthdr == IP_PROTOCOL_IPSEC_AH) || (nexthdr == IP_PROTOCOL_IPV6_ROUTE) || (nexthdr == IP_PROTOCOL_IP6_DESTINATION_OPTIONS); } -#define ip6_ext_header_len(p) (((p)->n_data_u64s+1) << 3) -#define ip6_ext_authhdr_len(p) (((p)->n_data_u64s+2) << 2) +#define ip6_ext_header_len(p) ((((ip6_ext_header_t *)(p))->n_data_u64s+1) << 3) +#define ip6_ext_authhdr_len(p) ((((ip6_ext_header_t *)(p))->n_data_u64s+2) << 2) always_inline void * ip6_ext_next_header (ip6_ext_header_t *ext_hdr ) { return (void *)((u8 *) ext_hdr + ip6_ext_header_len(ext_hdr)); } +/* + * Macro to find the IPv6 ext header of type t + * I is the IPv6 header + * P is the previous IPv6 ext header (NULL if none) + * M is the matched IPv6 ext header of type t + */ +#define ip6_ext_header_find_t(i, p, m, t) \ +if ((i)->protocol == t) \ +{ \ + (m) = (void *)((i)+1); \ + (p) = NULL; \ +} \ +else \ +{ \ + (m) = NULL; \ + (p) = (void *)((i)+1); \ + while (ip6_ext_hdr((p)->next_hdr) && \ + ((ip6_ext_header_t *)(p))->next_hdr != (t)) \ + { \ + (p) = ip6_ext_next_header((p)); \ + } \ + if ( ip6_ext_hdr((p)->next_hdr) == (t)) \ + { \ + (m) = (void *)(ip6_ext_next_header((p))); \ + } \ +} + + typedef CLIB_PACKED (struct { u8 next_hdr; /* Length of this header plus option data in 8 byte units. */ |