From 831d23866ab1010a7d7343aa1df024c8b65790b9 Mon Sep 17 00:00:00 2001
From: Damjan Marion <damarion@cisco.com>
Date: Fri, 22 Mar 2019 13:58:08 +0100
Subject: ipv6: vectorized ext header check

Change-Id: I454bb01153d1d0536c4a6fe36103e7721aad8cd1
Signed-off-by: Damjan Marion <damarion@cisco.com>
---
 src/vnet/ip/ip6_packet.h  | 30 +++++++++++++++++++++++++-----
 src/vnet/ip/protocols.def | 15 ++++++++++-----
 2 files changed, 35 insertions(+), 10 deletions(-)

diff --git a/src/vnet/ip/ip6_packet.h b/src/vnet/ip/ip6_packet.h
index 5d33cc77925..abbea5c46a1 100644
--- a/src/vnet/ip/ip6_packet.h
+++ b/src/vnet/ip/ip6_packet.h
@@ -513,16 +513,36 @@ typedef CLIB_PACKED (struct {
   u8 n_data_u64s;
 }) ip6_ext_header_t;
 
+#define foreach_ext_hdr_type \
+  _(IP6_HOP_BY_HOP_OPTIONS) \
+  _(IPV6_ROUTE) \
+  _(IPV6_FRAGMENTATION) \
+  _(IPSEC_ESP) \
+  _(IPSEC_AH) \
+  _(IP6_DESTINATION_OPTIONS) \
+  _(MOBILITY) \
+  _(HIP) \
+  _(SHIM6)
+
 always_inline u8 ip6_ext_hdr(u8 nexthdr)
 {
+#ifdef CLIB_HAVE_VEC128
+  static const u8x16 ext_hdr_types = {
+#define _(x) IP_PROTOCOL_##x,
+ foreach_ext_hdr_type
+#undef _
+  };
+
+  return !u8x16_is_all_zero (ext_hdr_types == u8x16_splat (nexthdr));
+#else
   /*
    * find out if nexthdr is an extension header or a protocol
    */
-  return   (nexthdr == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) ||
-    (nexthdr == IP_PROTOCOL_IPV6_FRAGMENTATION)  ||
-    (nexthdr == IP_PROTOCOL_IPSEC_AH)      ||
-    (nexthdr == IP_PROTOCOL_IPV6_ROUTE)      ||
-    (nexthdr == IP_PROTOCOL_IP6_DESTINATION_OPTIONS);
+  return   0
+#define _(x) || (nexthdr == IP_PROTOCOL_##x)
+ foreach_ext_hdr_type;
+#undef _
+#endif
 }
 
 #define ip6_ext_header_len(p)  ((((ip6_ext_header_t *)(p))->n_data_u64s+1) << 3)
diff --git a/src/vnet/ip/protocols.def b/src/vnet/ip/protocols.def
index 4ec0bbc9284..e6c1f6379b0 100644
--- a/src/vnet/ip/protocols.def
+++ b/src/vnet/ip/protocols.def
@@ -158,10 +158,15 @@ ip_protocol (134, RSVP_E2E_IGNORE)
 ip_protocol (135, MOBILITY)
 ip_protocol (136, UDP_LITE)
 ip_protocol (137, MPLS_IN_IP)
-/*
- * VPPs way of dealing with fragments is to mark them as 0xfe, to be picked
- * by the corresponding nodes based on this protocol
- */
-ip_protocol (0xfe, VPP_FRAGMENTATION)
+ip_protocol (138, MANET)
+ip_protocol (139, HIP)
+ip_protocol (140, SHIM6)
+ip_protocol (141, WESP)
+ip_protocol (142, ROHC)
+
+/* unassigned 143 - 252 */
+
+ip_protocol (253, EXP1)
+ip_protocol (254, EXP2)
 ip_protocol (255, RESERVED)
 
-- 
cgit 1.2.3-korg