使用DPDK剥离MPLS报头遇动作不支持错误的技术问询

开发者阿泽

2026-8-13

问题：DPDK流规则添加MPLS剥离动作失败

基于DPDK的flow_filtering示例程序，尝试配置流匹配规则及动作如下：

匹配模式：Ethernet → MPLS → IPv4 → END
动作：RTE_FLOW_ACTION_TYPE_OF_POP_MPLS → RTE_FLOW_ACTION_TYPE_END

执行代码时抛出错误：Flow can't be created 16 message: Not supported action.

代码片段

action[0].type = RTE_FLOW_ACTION_TYPE_OF_POP_MPLS;
action[1].type = RTE_FLOW_ACTION_TYPE_END;

pattern[0].type = RTE_FLOW_ITEM_TYPE_ETH;

pattern[1].type = RTE_FLOW_ITEM_TYPE_MPLS;

memset(&ip_spec, 0, sizeof(struct rte_flow_item_ipv4));
memset(&ip_mask, 0, sizeof(struct rte_flow_item_ipv4));
ip_spec.hdr.dst_addr = htonl(dest_ip);
ip_mask.hdr.dst_addr = dest_mask;
ip_spec.hdr.src_addr = htonl(src_ip);
ip_mask.hdr.src_addr = src_mask;
pattern[2].type = RTE_FLOW_ITEM_TYPE_IPV4;
pattern[2].spec = &ip_spec;
pattern[2].mask = &ip_mask;

pattern[3].type = RTE_FLOW_ITEM_TYPE_END;

res = rte_flow_validate(port_id, &attr, pattern, action, error);

测试情况

移除pattern[1].type = RTE_FLOW_ITEM_TYPE_MPLS;和action[0].type = RTE_FLOW_ACTION_TYPE_OF_POP_MPLS;后，代码可正常运行；尝试调整MPLS在匹配模式中的顺序（尽管MPLS报头位于L2和L3之间），问题仍未解决。