diff options
Diffstat (limited to 'src/vnet/sr')
| -rwxr-xr-x | src/vnet/sr/sr.h | 40 |
1 files changed, 39 insertions, 1 deletions
diff --git a/src/vnet/sr/sr.h b/src/vnet/sr/sr.h index eb781e4bcee..1545a84f38b 100755 --- a/src/vnet/sr/sr.h +++ b/src/vnet/sr/sr.h @@ -83,7 +83,6 @@ typedef struct ip6_address_t bsid; /**< BindingSID (key) */ u8 type; /**< Type (default is 0) */ - /* SR Policy specific DPO */ /* IF Type = DEFAULT Then Load Balancer DPO among SID lists */ /* IF Type = SPRAY then Spray DPO with all SID lists */ @@ -290,6 +289,45 @@ sr_steering_policy (int is_del, ip6_address_t * bsid, u32 sr_policy_index, u32 table_id, ip46_address_t * prefix, u32 mask_width, u32 sw_if_index, u8 traffic_type); +/** + * @brief SR rewrite string computation for SRH insertion (inline) + * + * @param sl is a vector of IPv6 addresses composing the Segment List + * + * @return precomputed rewrite string for SRH insertion + */ +static inline u8 * +ip6_compute_rewrite_string_insert (ip6_address_t * sl) +{ + ip6_sr_header_t *srh; + ip6_address_t *addrp, *this_address; + u32 header_length = 0; + u8 *rs = NULL; + + header_length = 0; + header_length += sizeof (ip6_sr_header_t); + header_length += (vec_len (sl) + 1) * sizeof (ip6_address_t); + + vec_validate (rs, header_length - 1); + + srh = (ip6_sr_header_t *) rs; + srh->type = ROUTING_HEADER_TYPE_SR; + srh->segments_left = vec_len (sl); + srh->first_segment = vec_len (sl); + srh->length = ((sizeof (ip6_sr_header_t) + + ((vec_len (sl) + 1) * sizeof (ip6_address_t))) / 8) - 1; + srh->flags = 0x00; + srh->reserved = 0x0000; + addrp = srh->segments + vec_len (sl); + vec_foreach (this_address, sl) + { + clib_memcpy (addrp->as_u8, this_address->as_u8, sizeof (ip6_address_t)); + addrp--; + } + return rs; +} + + #endif /* included_vnet_sr_h */ /* |