[ovs-dev] [PATCH 36/62] [netdev-offload-dpdk]；add ipv6 hw offload support && suppress non ipv4/ipv6 hw offload

[Tao YunXiang]

From: Rongyin <rongyin at cmss.chinamobile.com>

Code Source From: Self Code

Description:

     Add ipv6 hw offload support && suppress non ipv4/ipv6 hw offload

Jira:  #[Optional]
市场项目编号（名称）：[Optional]
---
 lib/netdev-offload-dpdk.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/lib/netdev-offload-dpdk.c b/lib/netdev-offload-dpdk.c
index 11b04b5..13b46a5 100644
--- a/lib/netdev-offload-dpdk.c
+++ b/lib/netdev-offload-dpdk.c
@@ -856,6 +856,44 @@ parse_flow_match(struct flow_patterns *patterns,
         return 0;
     }
 
+    /* IP v6 */
+    if (match->flow.dl_type == htons(ETH_TYPE_IPV6)) {
+        struct rte_flow_item_ipv6 *spec, *mask;
+
+        spec = xzalloc(sizeof *spec);
+        mask = xzalloc(sizeof *mask);
+
+        spec->hdr.proto = match->flow.nw_proto;
+        spec->hdr.hop_limits = match->flow.nw_ttl;
+        spec->hdr.vtc_flow = htonl((uint32_t)match->flow.nw_tos <<
+                                   RTE_IPV6_HDR_TC_SHIFT);
+        memcpy(spec->hdr.src_addr, &match->flow.ipv6_src,
+               sizeof spec->hdr.src_addr);
+        memcpy(spec->hdr.dst_addr, &match->flow.ipv6_dst,
+               sizeof spec->hdr.dst_addr);
+
+        mask->hdr.proto = match->wc.masks.nw_proto;
+        mask->hdr.hop_limits = match->wc.masks.nw_ttl;
+        mask->hdr.vtc_flow = htonl((uint32_t)match->wc.masks.nw_tos <<
+                                   RTE_IPV6_HDR_TC_SHIFT);
+        memcpy(mask->hdr.src_addr, &match->wc.masks.ipv6_src,
+               sizeof mask->hdr.src_addr);
+        memcpy(mask->hdr.dst_addr, &match->wc.masks.ipv6_dst,
+               sizeof mask->hdr.dst_addr);
+
+        consumed_masks->nw_proto = 0;
+        consumed_masks->nw_ttl = 0;
+        consumed_masks->nw_tos = 0;
+        memset(&consumed_masks->ipv6_src, 0, sizeof consumed_masks->ipv6_src);
+        memset(&consumed_masks->ipv6_dst, 0, sizeof consumed_masks->ipv6_dst);
+
+        add_flow_pattern(patterns, RTE_FLOW_ITEM_TYPE_IPV6, spec, mask);
+
+        /* Save proto for L4 protocol setup */
+        proto = spec->hdr.proto & mask->hdr.proto;
+        next_proto_mask = &mask->hdr.proto;
+    }
+
     if (proto != IPPROTO_ICMP && proto != IPPROTO_UDP  &&
         proto != IPPROTO_SCTP && proto != IPPROTO_TCP  ){
         VLOG_DBG("L4 Protocol (%u) not supported", proto);
@@ -1649,6 +1687,14 @@ netdev_offload_dpdk_validate_flow(const struct match *match)
     }
      */
 
+    /* only offload ipv4/ipv6 */
+    if ((match->flow.dl_type != htons(ETH_TYPE_IP)) &&
+        (match->flow.dl_type != htons(ETH_TYPE_IPV6))) {
+        VLOG_DBG("RY DBG: dl_type=0x%04x no need to be offloaded",
+                    ntohs(match->flow.dl_type));
+        return -1;
+    }
+
     if (masks->ct_state || masks->ct_nw_proto ||
         masks->ct_zone  || masks->ct_mark     ||
         !ovs_u128_is_zero(masks->ct_label)) {
-- 
1.8.3.1