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From: Cody Doucette <doucette@bu.edu>
To: Olivier Matz <olivier.matz@6wind.com>
Cc: dev@dpdk.org, Cody Doucette <doucette@bu.edu>
Subject: [dpdk-dev] [PATCH v5 2/3] net: add IPv6 extension header definitions
Date: Wed, 31 Oct 2018 02:17:57 +0000
Message-ID: <20181031021758.66752-3-doucette@bu.edu> (raw)
In-Reply-To: <20181031021758.66752-1-doucette@bu.edu>

Add a common IPv6 extension header and an inline function
for determining whether a next header field represents
an IPv6 extension header.

Signed-off-by: Cody Doucette <doucette@bu.edu>
---
 lib/librte_net/rte_ip.h | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/lib/librte_net/rte_ip.h b/lib/librte_net/rte_ip.h
index f2a8904a2..43dbb15e4 100644
--- a/lib/librte_net/rte_ip.h
+++ b/lib/librte_net/rte_ip.h
@@ -350,6 +350,14 @@ struct ipv6_hdr {
 #define IPV6_HDR_FL_MASK ((1u << IPV6_HDR_TC_SHIFT) - 1)
 #define IPV6_HDR_TC_MASK (0xf << IPV6_HDR_TC_SHIFT)
 
+/**
+ * IPv6 extension header
+ */
+struct ipv6_opt_hdr {
+	uint8_t nexthdr; /**< Next header. */
+	uint8_t hdrlen;	 /**< Length; presence & meaning varies by ext type. */
+} __attribute__((packed));
+
 /**
  * Process the pseudo-header checksum of an IPv6 header.
  *
@@ -421,6 +429,25 @@ rte_ipv6_udptcp_cksum(const struct ipv6_hdr *ipv6_hdr, const void *l4_hdr)
 	return (uint16_t)cksum;
 }
 
+/**
+ * Check whether an IPv6 nexthdr value is for an IPv6 extension header.
+ *
+ * @param nexthdr
+ *   The protocol/next header field from an IPv6 (extension) header.
+ * @return
+ *   Whether the nexthdr field is for an IPv6 extension header.
+ */
+static inline int
+ipv6_ext_hdr(uint8_t nexthdr)
+{
+	return (nexthdr == IPPROTO_HOPOPTS) ||
+		(nexthdr == IPPROTO_ROUTING) ||
+		(nexthdr == IPPROTO_FRAGMENT) ||
+		(nexthdr == IPPROTO_AH) ||
+		(nexthdr == IPPROTO_NONE) ||
+		(nexthdr == IPPROTO_DSTOPTS);
+}
+
 #ifdef __cplusplus
 }
 #endif
-- 
2.17.1

  parent reply	other threads:[~2018-10-31  2:18 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-31  2:17 [dpdk-dev] [PATCH v5 0/3] Extend rte_ipv6_frag_get_ipv6_fragment_header() Cody Doucette
2018-10-31  2:17 ` [dpdk-dev] [PATCH v5 1/3] net/failsafe: remove D_XOPEN_SOURCE flag Cody Doucette
2018-10-31 17:02   ` Thomas Monjalon
2018-10-31 21:10     ` Gaëtan Rivet
2018-10-31  2:17 ` Cody Doucette [this message]
2018-10-31 17:03   ` [dpdk-dev] [PATCH v5 2/3] net: add IPv6 extension header definitions Thomas Monjalon
2018-11-05  8:45     ` Olivier Matz
2018-10-31  2:17 ` [dpdk-dev] [PATCH v5 3/3] ip_frag: extend IPv6 fragment header retrieval Cody Doucette
2018-10-31 17:03   ` Thomas Monjalon
2018-10-31 19:56   ` Ananyev, Konstantin
2018-11-07 20:21     ` Cody Doucette
2018-11-07 23:00       ` Ananyev, Konstantin
  -- strict thread matches above, loose matches on Subject: below --
2018-10-31  0:17 [dpdk-dev] [PATCH v4 0/3] Extend rte_ipv6_frag_get_ipv6_fragment_header() Cody Doucette
2018-10-31  0:17 ` [dpdk-dev] [PATCH v5 2/3] net: add IPv6 extension header definitions Cody Doucette

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