diff options
Diffstat (limited to 'VNFs/DPPD-PROX/arp.h')
| -rw-r--r-- | VNFs/DPPD-PROX/arp.h | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/VNFs/DPPD-PROX/arp.h b/VNFs/DPPD-PROX/arp.h index 279bdada..488008d7 100644 --- a/VNFs/DPPD-PROX/arp.h +++ b/VNFs/DPPD-PROX/arp.h @@ -18,6 +18,8 @@ #define _ARP_H_ #include <rte_ether.h> +#include "etypes.h" +#include "mbuf_utils.h" #define ARP_REQUEST 0x100 #define ARP_REPLY 0x200 @@ -49,10 +51,13 @@ static int arp_is_gratuitous(struct ether_hdr_arp *hdr) return hdr->arp.data.spa == hdr->arp.data.tpa; } -static inline void prepare_arp_reply(struct ether_hdr_arp *hdr_arp, struct ether_addr *s_addr) +static inline void build_arp_reply(struct ether_hdr_arp *hdr_arp, struct ether_addr *s_addr) { uint32_t ip_source = hdr_arp->arp.data.spa; + memcpy(hdr_arp->ether_hdr.d_addr.addr_bytes, hdr_arp->ether_hdr.s_addr.addr_bytes, sizeof(struct ether_addr)); + memcpy(hdr_arp->ether_hdr.s_addr.addr_bytes, s_addr, sizeof(struct ether_addr)); + hdr_arp->arp.data.spa = hdr_arp->arp.data.tpa; hdr_arp->arp.data.tpa = ip_source; hdr_arp->arp.oper = 0x200; @@ -60,6 +65,28 @@ static inline void prepare_arp_reply(struct ether_hdr_arp *hdr_arp, struct ether memcpy(&hdr_arp->arp.data.sha, s_addr, sizeof(struct ether_addr)); } +static inline void build_arp_request(struct rte_mbuf *mbuf, struct ether_addr *src_mac, uint32_t ip_dst, uint32_t ip_src) +{ + struct ether_hdr_arp *hdr_arp = rte_pktmbuf_mtod(mbuf, struct ether_hdr_arp *); + uint64_t mac_bcast = 0xFFFFFFFFFFFF; + rte_pktmbuf_pkt_len(mbuf) = 42; + rte_pktmbuf_data_len(mbuf) = 42; + init_mbuf_seg(mbuf); + + memcpy(&hdr_arp->ether_hdr.d_addr.addr_bytes, &mac_bcast, 6); + memcpy(&hdr_arp->ether_hdr.s_addr.addr_bytes, src_mac, 6); + hdr_arp->ether_hdr.ether_type = ETYPE_ARP; + hdr_arp->arp.htype = 0x100, + hdr_arp->arp.ptype = 0x0008; + hdr_arp->arp.hlen = 6; + hdr_arp->arp.plen = 4; + hdr_arp->arp.oper = 0x100; + hdr_arp->arp.data.spa = ip_src; + hdr_arp->arp.data.tpa = ip_dst; + memset(&hdr_arp->arp.data.tha, 0, sizeof(struct ether_addr)); + memcpy(&hdr_arp->arp.data.sha, src_mac, sizeof(struct ether_addr)); +} + static void create_mac(struct ether_hdr_arp *hdr, struct ether_addr *addr) { addr->addr_bytes[0] = 0x2; |