@@ -39,6 +39,16 @@ int sandbox_eth_arp_req_to_reply(struct udevice *dev, void *packet,
int sandbox_eth_ping_req_to_reply(struct udevice *dev, void *packet,
unsigned int len);
+/*
+ * sandbox_eth_recv_arp_req()
+ *
+ * Inject an ARP request for this target
+ *
+ * @dev: device that received the packet
+ * @return 0 if injected, -EOVERFLOW if not
+ */
+int sandbox_eth_recv_arp_req(struct udevice *dev);
+
/**
* A packet handler
*
@@ -161,6 +161,47 @@ int sandbox_eth_ping_req_to_reply(struct udevice *dev, void *packet,
}
/*
+ * sandbox_eth_recv_arp_req()
+ *
+ * Inject an ARP request for this target
+ *
+ * returns 0 if injected, -EOVERFLOW if not
+ */
+int sandbox_eth_recv_arp_req(struct udevice *dev)
+{
+ struct eth_sandbox_priv *priv = dev_get_priv(dev);
+ struct ethernet_hdr *eth_recv;
+ struct arp_hdr *arp_recv;
+
+ /* Don't allow the buffer to overrun */
+ if (priv->recv_packets >= PKTBUFSRX)
+ return -EOVERFLOW;
+
+ /* Formulate a fake request */
+ eth_recv = (void *)priv->recv_packet_buffer[priv->recv_packets];
+ memcpy(eth_recv->et_dest, net_bcast_ethaddr, ARP_HLEN);
+ memcpy(eth_recv->et_src, priv->fake_host_hwaddr, ARP_HLEN);
+ eth_recv->et_protlen = htons(PROT_ARP);
+
+ arp_recv = (void *)eth_recv + ETHER_HDR_SIZE;
+ arp_recv->ar_hrd = htons(ARP_ETHER);
+ arp_recv->ar_pro = htons(PROT_IP);
+ arp_recv->ar_hln = ARP_HLEN;
+ arp_recv->ar_pln = ARP_PLEN;
+ arp_recv->ar_op = htons(ARPOP_REQUEST);
+ memcpy(&arp_recv->ar_sha, priv->fake_host_hwaddr, ARP_HLEN);
+ net_write_ip(&arp_recv->ar_spa, priv->fake_host_ipaddr);
+ memcpy(&arp_recv->ar_tha, net_null_ethaddr, ARP_HLEN);
+ net_write_ip(&arp_recv->ar_tpa, net_ip);
+
+ priv->recv_packet_length[priv->recv_packets] =
+ ETHER_HDR_SIZE + ARP_HDR_SIZE;
+ ++priv->recv_packets;
+
+ return 0;
+}
+
+/*
* sb_default_handler()
*
* perform typical responses to simple ping
@@ -258,3 +258,89 @@ static int dm_test_net_retry(struct unit_test_state *uts)
return retval;
}
DM_TEST(dm_test_net_retry, DM_TESTF_SCAN_FDT);
+
+static int sb_check_arp_reply(struct udevice *dev, void *packet,
+ unsigned int len)
+{
+ struct eth_sandbox_priv *priv = dev_get_priv(dev);
+ struct ethernet_hdr *eth = packet;
+ struct arp_hdr *arp;
+ /* Used by all of the ut_assert macros */
+ struct unit_test_state *uts = priv->priv;
+
+ if (ntohs(eth->et_protlen) != PROT_ARP)
+ return 0;
+
+ arp = packet + ETHER_HDR_SIZE;
+
+ if (ntohs(arp->ar_op) != ARPOP_REPLY)
+ return 0;
+
+ /* This test would be worthless if we are not waiting */
+ ut_assert(arp_is_waiting());
+
+ /* Validate response */
+ ut_assert(memcmp(eth->et_src, net_ethaddr, ARP_HLEN) == 0);
+ ut_assert(memcmp(eth->et_dest, priv->fake_host_hwaddr, ARP_HLEN) == 0);
+ ut_assert(eth->et_protlen == htons(PROT_ARP));
+
+ ut_assert(arp->ar_hrd == htons(ARP_ETHER));
+ ut_assert(arp->ar_pro == htons(PROT_IP));
+ ut_assert(arp->ar_hln == ARP_HLEN);
+ ut_assert(arp->ar_pln == ARP_PLEN);
+ ut_assert(memcmp(&arp->ar_sha, net_ethaddr, ARP_HLEN) == 0);
+ ut_assert(net_read_ip(&arp->ar_spa).s_addr == net_ip.s_addr);
+ ut_assert(memcmp(&arp->ar_tha, priv->fake_host_hwaddr, ARP_HLEN) == 0);
+ ut_assert(net_read_ip(&arp->ar_tpa).s_addr ==
+ string_to_ip("1.1.2.4").s_addr);
+
+ return 0;
+}
+
+static int sb_with_async_arp_handler(struct udevice *dev, void *packet,
+ unsigned int len)
+{
+ struct eth_sandbox_priv *priv = dev_get_priv(dev);
+ struct ethernet_hdr *eth = packet;
+ struct arp_hdr *arp = packet + ETHER_HDR_SIZE;
+ int ret;
+
+ /*
+ * If we are about to generate a reply to ARP, first inject a request
+ * from another host
+ */
+ if (ntohs(eth->et_protlen) == PROT_ARP &&
+ ntohs(arp->ar_op) == ARPOP_REQUEST) {
+ /* Make sure sandbox_eth_recv_arp_req() knows who is asking */
+ priv->fake_host_ipaddr = string_to_ip("1.1.2.4");
+
+ ret = sandbox_eth_recv_arp_req(dev);
+ if (ret)
+ return ret;
+ }
+
+ sandbox_eth_arp_req_to_reply(dev, packet, len);
+ sandbox_eth_ping_req_to_reply(dev, packet, len);
+
+ return sb_check_arp_reply(dev, packet, len);
+}
+
+static int dm_test_eth_async_arp_reply(struct unit_test_state *uts)
+{
+ net_ping_ip = string_to_ip("1.1.2.2");
+
+ sandbox_eth_set_tx_handler(0, sb_with_async_arp_handler);
+ /* Used by all of the ut_assert macros in the tx_handler */
+ sandbox_eth_set_priv(0, uts);
+ sandbox_eth_skip_timeout();
+
+ env_set("ethact", "eth@10002000");
+ ut_assert(net_loop(PING) == -ETIMEDOUT);
+ ut_asserteq_str("eth@10002000", env_get("ethact"));
+
+ sandbox_eth_set_tx_handler(0, NULL);
+
+ return 0;
+}
+
+DM_TEST(dm_test_eth_async_arp_reply, DM_TESTF_SCAN_FDT);