Implement ping6 command to ping hosts using IPv6. There is no ICMP
request so it is not possible to ping our host.
Signed-off-by: Viacheslav Mitrofanov <v.v.mitrofa...@yadro.com>
---
cmd/Kconfig | 6 +++
cmd/net.c | 26 +++++++++++
include/net.h | 4 +-
include/net6.h | 17 +++++++
net/Makefile | 1 +
net/net.c | 13 ++++++
net/net6.c | 4 ++
net/ping6.c | 117 +++++++++++++++++++++++++++++++++++++++++++++++++
8 files changed, 186 insertions(+), 2 deletions(-)
create mode 100644 net/ping6.c
diff --git a/cmd/Kconfig b/cmd/Kconfig
index 211ebe9c87..e8f4e43ebe 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -1801,6 +1801,12 @@ config CMD_PING
help
Send ICMP ECHO_REQUEST to network host
+config CMD_PING6
+ bool "ping6"
+ depends on IPV6
+ help
+ Send ICMPv6 ECHO_REQUEST to network host
+
config CMD_CDP
bool "cdp"
help
diff --git a/cmd/net.c b/cmd/net.c
index 9225bddf6b..7ff1efec1f 100644
--- a/cmd/net.c
+++ b/cmd/net.c
@@ -333,6 +333,32 @@ U_BOOT_CMD(
);
#endif
+#if IS_ENABLED(CONFIG_CMD_PING6)
+int do_ping6(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[])
+{
+ if (string_to_ip6(argv[1], &net_ping_ip6) != 0)
+ return CMD_RET_USAGE;
+
+ use_ip6 = true;
+ if (net_loop(PING6) < 0) {
+ use_ip6 = false;
+ printf("ping6 failed; host %pI6c is not alive\n",
+ &net_ping_ip6);
+ return 1;
+ }
+
+ use_ip6 = false;
+ printf("host %pI6c is alive\n", &net_ping_ip6);
+ return 0;
+}
+
+U_BOOT_CMD(
+ ping6, 2, 1, do_ping6,
+ "send ICMPv6 ECHO_REQUEST to network host",
+ "pingAddress"
+);
+#endif /* CONFIG_CMD_PING6 */
+
#if defined(CONFIG_CMD_CDP)
static void cdp_update_env(void)
diff --git a/include/net.h b/include/net.h
index c06b577808..72d32d358a 100644
--- a/include/net.h
+++ b/include/net.h
@@ -559,8 +559,8 @@ extern ushort net_native_vlan; /* Our
Native VLAN */
extern int net_restart_wrap; /* Tried all network devices */
enum proto_t {
- BOOTP, RARP, ARP, TFTPGET, DHCP, PING, DNS, NFS, CDP, NETCONS, SNTP,
- TFTPSRV, TFTPPUT, LINKLOCAL, FASTBOOT, WOL, UDP
+ BOOTP, RARP, ARP, TFTPGET, DHCP, PING, PING6, DNS, NFS, CDP, NETCONS,
+ SNTP, TFTPSRV, TFTPPUT, LINKLOCAL, FASTBOOT, WOL, UDP
};
extern char net_boot_file_name[1024];/* Boot File name */
diff --git a/include/net6.h b/include/net6.h
index 383f8336e7..6f0bd626ee 100644
--- a/include/net6.h
+++ b/include/net6.h
@@ -175,6 +175,7 @@ extern struct in6_addr net_ip6; /* Our IPv6 addr (0 =
unknown) */
extern struct in6_addr net_link_local_ip6; /* Our link local IPv6 addr */
extern u32 net_prefix_length; /* Our prefixlength (0 = unknown) */
extern struct in6_addr net_server_ip6; /* Server IPv6 addr (0 = unknown) */
+extern struct in6_addr net_ping_ip6; /* the ipv6 address to ping */
extern bool use_ip6;
#ifdef CONFIG_IPV6
@@ -292,4 +293,20 @@ static inline void net_copy_ip6(void *to, const void *from)
}
#endif
+#if IS_ENABLED(CONFIG_CMD_PING6)
+/* starts a Ping6 process */
+void ping6_start(void);
+/* handles reception of icmpv6 echo request/reply */
+void ping6_receive(struct ethernet_hdr *et, struct ip6_hdr *ip6, int len);
+#else
+static inline void ping6_start(void)
+{
+}
+
+static inline
+void ping6_receive(struct ethernet_hdr *et, struct ip6_hdr *ip6, int len)
+{
+}
+#endif /* CONFIG_CMD_PING6 */
+
#endif /* __NET6_H__ */
diff --git a/net/Makefile b/net/Makefile
index 766dd04135..e32e913d68 100644
--- a/net/Makefile
+++ b/net/Makefile
@@ -25,6 +25,7 @@ obj-$(CONFIG_NET) += net.o
obj-$(CONFIG_IPV6) += net6.o
obj-$(CONFIG_CMD_NFS) += nfs.o
obj-$(CONFIG_CMD_PING) += ping.o
+obj-$(CONFIG_CMD_PING6) += ping6.o
obj-$(CONFIG_CMD_PCAP) += pcap.o
obj-$(CONFIG_CMD_RARP) += rarp.o
obj-$(CONFIG_CMD_SNTP) += sntp.o
diff --git a/net/net.c b/net/net.c
index d519173101..e5fcbcaec7 100644
--- a/net/net.c
+++ b/net/net.c
@@ -509,6 +509,11 @@ restart:
ping_start();
break;
#endif
+#if defined(CONFIG_CMD_PING6)
+ case PING6:
+ ping6_start();
+ break;
+#endif
#if defined(CONFIG_CMD_NFS) && !defined(CONFIG_SPL_BUILD)
case NFS:
nfs_start();
@@ -1360,6 +1365,14 @@ static int net_check_prereq(enum proto_t protocol)
}
goto common;
#endif
+#if defined(CONFIG_CMD_PING6)
+ case PING6:
+ if (ip6_is_unspecified_addr(&net_ping_ip6)) {
+ puts("*** ERROR: ping address not given\n");
+ return 1;
+ }
+ goto common;
+#endif
#if defined(CONFIG_CMD_DNS)
case DNS:
if (net_dns_server.s_addr == 0) {
diff --git a/net/net6.c b/net/net6.c
index 0799d411b2..a3b89ded24 100644
--- a/net/net6.c
+++ b/net/net6.c
@@ -444,6 +444,10 @@ void net_ip6_handler(struct ethernet_hdr *et, struct
ip6_hdr *ip6, int len)
return;
switch (icmp->icmp6_type) {
+ case IPV6_ICMP_ECHO_REQUEST:
+ case IPV6_ICMP_ECHO_REPLY:
+ ping6_receive(et, ip6, len);
+ break;
case IPV6_NDISC_NEIGHBOUR_SOLICITATION:
case IPV6_NDISC_NEIGHBOUR_ADVERTISEMENT:
ndisc_receive(et, ip6, len);
diff --git a/net/ping6.c b/net/ping6.c
new file mode 100644
index 0000000000..3284e314ae
--- /dev/null
+++ b/net/ping6.c
@@ -0,0 +1,117 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2013 Allied Telesis Labs NZ
+ * Chris Packham, <judge.pack...@gmail.com>
+ *
+ * Copyright (C) 2022 YADRO
+ * Viacheslav Mitrofanov <v.v.mitrofa...@yadro.com>
+ */
+
+/*
+ * Simple ping6 implementation
+ */
+
+#include <common.h>
+#include <net.h>
+#include <net6.h>
+#include "ndisc.h"
+
+static ushort seq_no;
+
+/* the ipv6 address to ping */
+struct in6_addr net_ping_ip6;
+
+int
+ip6_make_ping(uchar *eth_dst_addr, struct in6_addr *neigh_addr, uchar *pkt)
+{
+ struct echo_msg *msg;
+ __u16 len;
+ uchar *pkt_old = pkt;
+
+ len = sizeof(struct echo_msg);
+
+ pkt += net_set_ether(pkt, eth_dst_addr, PROT_IP6);
+ pkt += ip6_add_hdr(pkt, &net_ip6, neigh_addr, IPPROTO_ICMPV6,
+ IPV6_NDISC_HOPLIMIT, len);
+
+ /* ICMPv6 - Echo */
+ msg = (struct echo_msg *)pkt;
+ msg->icmph.icmp6_type = IPV6_ICMP_ECHO_REQUEST;
+ msg->icmph.icmp6_code = 0;
+ msg->icmph.icmp6_cksum = 0;
+ msg->icmph.icmp6_identifier = 0;
+ msg->icmph.icmp6_sequence = htons(seq_no++);
+ msg->id = msg->icmph.icmp6_identifier; /* these seem redundant */
+ msg->sequence = msg->icmph.icmp6_sequence;
+
+ /* checksum */
+ msg->icmph.icmp6_cksum = csum_ipv6_magic(&net_ip6, neigh_addr, len,
+ IPPROTO_ICMPV6,
+ csum_partial((u8 *)msg,
+ len, 0));
+
+ pkt += len;
+
+ return pkt - pkt_old;
+}
+
+int ping6_send(void)
+{
+ uchar *pkt;
+ static uchar mac[6];
+
+ /* always send neighbor solicit */
+
+ memcpy(mac, net_null_ethaddr, 6);
+
+ net_nd_sol_packet_ip6 = net_ping_ip6;
+ net_nd_packet_mac = mac;
+
+ pkt = net_nd_tx_packet;
+ pkt += ip6_make_ping(mac, &net_ping_ip6, pkt);
+
+ /* size of the waiting packet */
+ net_nd_tx_packet_size = (pkt - net_nd_tx_packet);
+
+ /* and do the ARP request */
+ net_nd_try = 1;
+ net_nd_timer_start = get_timer(0);
+ ndisc_request();
+ return 1; /* waiting */
+}
+
+static void ping6_timeout(void)
+{
+ eth_halt();
+ net_set_state(NETLOOP_FAIL); /* we did not get the reply */
+}
+
+void ping6_start(void)
+{
+ printf("Using %s device\n", eth_get_name());
+ net_set_timeout_handler(10000UL, ping6_timeout);
+
+ ping6_send();
+}
+
+void ping6_receive(struct ethernet_hdr *et, struct ip6_hdr *ip6, int len)
+{
+ struct icmp6hdr *icmp =
+ (struct icmp6hdr *)(((uchar *)ip6) + IP6_HDR_SIZE);
+ struct in6_addr src_ip;
+
+ switch (icmp->icmp6_type) {
+ case IPV6_ICMP_ECHO_REPLY:
+ src_ip = ip6->saddr;
+ if (memcmp(&net_ping_ip6, &src_ip, sizeof(struct in6_addr)))
+ return;
+ net_set_state(NETLOOP_SUCCESS);
+ break;
+ case IPV6_ICMP_ECHO_REQUEST:
+ debug("Got ICMPv6 ECHO REQUEST from %pI6c\n", &ip6->saddr);
+ /* ignore for now.... */
+ break;
+ default:
+ debug("Unexpected ICMPv6 type 0x%x\n", icmp->icmp6_type);
+ }
+}
--
2.25.1
