diff options
Diffstat (limited to 'lib/librte_net/rte_arp.c')
| -rw-r--r-- | lib/librte_net/rte_arp.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/lib/librte_net/rte_arp.c b/lib/librte_net/rte_arp.c new file mode 100644 index 00000000..f0ed9bd6 --- /dev/null +++ b/lib/librte_net/rte_arp.c @@ -0,0 +1,50 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2018 Intel Corporation + */ + +#include <arpa/inet.h> + +#include <rte_arp.h> + +#define RARP_PKT_SIZE 64 +struct rte_mbuf * __rte_experimental +rte_net_make_rarp_packet(struct rte_mempool *mpool, + const struct ether_addr *mac) +{ + struct ether_hdr *eth_hdr; + struct arp_hdr *rarp; + struct rte_mbuf *mbuf; + + if (mpool == NULL) + return NULL; + + mbuf = rte_pktmbuf_alloc(mpool); + if (mbuf == NULL) + return NULL; + + eth_hdr = (struct ether_hdr *)rte_pktmbuf_append(mbuf, RARP_PKT_SIZE); + if (eth_hdr == NULL) { + rte_pktmbuf_free(mbuf); + return NULL; + } + + /* Ethernet header. */ + memset(eth_hdr->d_addr.addr_bytes, 0xff, ETHER_ADDR_LEN); + ether_addr_copy(mac, ð_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); + + return mbuf; +} |