[dpdk-dev] [PATCH v2 1/2] lib/net: add IPv6 header fields macros

[Shahaf Shuler <shahafs@mellanox.com>]

From: Shachar Beiser <shacharbe@mellanox.com>

Support IPv6 header vtc_flow fields : tc , flow_label

Signed-off-by: Shachar Beiser <shacharbe@mellanox.com>
---
Sending on behalf of Shachar.

On v2:
 - Addressed Stephen comments on the coding style.

---
 lib/librte_net/rte_ip.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/librte_net/rte_ip.h b/lib/librte_net/rte_ip.h
index 9a62ff667..f32684c66 100644
--- a/lib/librte_net/rte_ip.h
+++ b/lib/librte_net/rte_ip.h
@@ -344,6 +344,12 @@ struct ipv6_hdr {
 	uint8_t  dst_addr[16]; /**< IP address of destination host(s). */
 } __attribute__((__packed__));
 
+/* IPv6 vtc_flow: IPv / TC / flow_label */
+#define IPV6_HDR_FL_SHIFT 0
+#define IPV6_HDR_TC_SHIFT 20
+#define IPV6_HDR_FL_MASK ((1u << IPV6_HDR_TC_SHIFT) - 1)
+#define IPV6_HDR_TC_MASK (0xf << IPV6_HDR_TC_SHIFT)
+
 /**
  * Process the pseudo-header checksum of an IPv6 header.
  *
-- 
2.12.0