New upstream version 18.02

[deb_dpdk.git] / lib / librte_net / rte_arp.c

diff --git a/lib/librte_net/rte_arp.c b/lib/librte_net/rte_arp.c
new file mode 100644 (file)
index 0000000..f0ed9bd
--- /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, &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);
+
+       return mbuf;
+}