d/numam-dpdk
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

net: add a helper for making RARP packet

Browse Source 
Suggested-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Signed-off-by: Xiao Wang <xiao.w.wang@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
This commit is contained in:
Xiao Wang 2018-01-10 09:23:54 +08:00 committed by Ferruh Yigit
parent 1978a9dc57
commit 45ae05df82
4 changed files with 66 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
lib/librte_net/Makefile
View File

@ -13,6 +13,7 @@ LIBABIVER := 1
SRCS-$(CONFIG_RTE_LIBRTE_NET) := rte_net.c
SRCS-$(CONFIG_RTE_LIBRTE_NET) += rte_net_crc.c
SRCS-$(CONFIG_RTE_LIBRTE_NET) += rte_arp.c
# install includes
SYMLINK-$(CONFIG_RTE_LIBRTE_NET)-include := rte_ip.h rte_tcp.h rte_udp.h rte_esp.h

42
lib/librte_net/rte_arp.c Normal file
View File

@ -0,0 +1,42 @@
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2018 Intel Corporation
*/
#include <arpa/inet.h>
#include <rte_arp.h>
#define RARP_PKT_SIZE 64
int
rte_net_make_rarp_packet(struct rte_mbuf *mbuf, const struct ether_addr *mac)
{
struct ether_hdr *eth_hdr;
struct arp_hdr *rarp;
if (mbuf->buf_len < RARP_PKT_SIZE)
return -1;
/* Ethernet header. */
eth_hdr = rte_pktmbuf_mtod(mbuf, struct ether_hdr *);
memset(eth_hdr->d_addr.addr_bytes, 0xff, ETHER_ADDR_LEN);
ether_addr_copy(mac, &eth_hdr->s_addr);
eth_hdr->ether_type = htons(ETHER_TYPE_RARP);
/* RARP header. */
rarp = (struct arp_hdr *)(eth_hdr + 1);
rarp->arp_hrd = htons(ARP_HRD_ETHER);
rarp->arp_pro = htons(ETHER_TYPE_IPv4);
rarp->arp_hln = ETHER_ADDR_LEN;
rarp->arp_pln = 4;
rarp->arp_op = htons(ARP_OP_REVREQUEST);
ether_addr_copy(mac, &rarp->arp_data.arp_sha);
ether_addr_copy(mac, &rarp->arp_data.arp_tha);
memset(&rarp->arp_data.arp_sip, 0x00, 4);
memset(&rarp->arp_data.arp_tip, 0x00, 4);
mbuf->data_len = RARP_PKT_SIZE;
mbuf->pkt_len = RARP_PKT_SIZE;
return 0;
}

17
lib/librte_net/rte_arp.h
View File

@ -76,6 +76,23 @@ struct arp_hdr {
struct arp_ipv4 arp_data;
} __attribute__((__packed__));
/**
* @warning
* @b EXPERIMENTAL: this API may change without prior notice
*
* Make a RARP packet based on MAC addr.
*
* @param mbuf
* Pointer to the rte_mbuf structure
* @param mac
* Pointer to the MAC addr
*
* @return
* - 0 on success, negative on error
*/
int
rte_net_make_rarp_packet(struct rte_mbuf *mbuf, const struct ether_addr *mac);
#ifdef __cplusplus
}
#endif

6
lib/librte_net/rte_net_version.map
View File

@ -12,3 +12,9 @@ DPDK_17.05 {
rte_net_crc_set_alg;
} DPDK_16.11;
EXPERIMENTAL {
global:
rte_net_make_rarp_packet;
} DPDK_17.05;