DPDK
22.11.5
examples/bpf/t2.c
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2018 Intel Corporation
*/
/*
* eBPF program sample.
* Accepts pointer to struct rte_mbuf as an input parameter.
* cleanup mbuf's vlan_tci and all related RX flags
* (RTE_MBUF_F_RX_VLAN_PKT | RTE_MBUF_F_RX_VLAN_STRIPPED).
* Doesn't touch contents of packet data.
* To compile:
* clang -O2 -target bpf -Wno-int-to-void-pointer-cast -c t2.c
*
* NOTE: if DPDK is not installed system-wide, add compiler flag with path
* to DPDK rte_mbuf.h file, e.g. "clang -I/path/to/dpdk/headers -O2 ..."
*/
#include <stdint.h>
#include <stddef.h>
#include <rte_config.h>
#include <
rte_mbuf_core.h
>
uint64_t
entry(
void
*pkt)
{
struct
rte_mbuf
*mb;
mb = pkt;
mb->
vlan_tci
= 0;
mb->
ol_flags
&= ~(
RTE_MBUF_F_RX_VLAN
|
RTE_MBUF_F_RX_VLAN_STRIPPED
);
return
1;
}
rte_mbuf_core.h
RTE_MBUF_F_RX_VLAN_STRIPPED
#define RTE_MBUF_F_RX_VLAN_STRIPPED
Definition:
rte_mbuf_core.h:69
RTE_MBUF_F_RX_VLAN
#define RTE_MBUF_F_RX_VLAN
Definition:
rte_mbuf_core.h:49
rte_mbuf
Definition:
rte_mbuf_core.h:465
rte_mbuf::ol_flags
uint64_t ol_flags
Definition:
rte_mbuf_core.h:513
rte_mbuf::vlan_tci
uint16_t vlan_tci
Definition:
rte_mbuf_core.h:556
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