The transmit side example for a manually constructed 802.15.4 frame send over
a socket.
Signed-off-by: Stefan Schmidt <stefan@xxxxxxxxxxxxxxx>
---
examples/Makefile.am | 1 +
examples/af_packet_tx.c | 109 ++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 110 insertions(+)
create mode 100644 examples/af_packet_tx.c
diff --git a/examples/Makefile.am b/examples/Makefile.am
index 7cd67d9..efc8a44 100644
--- a/examples/Makefile.am
+++ b/examples/Makefile.am
@@ -1,5 +1,6 @@
bin_PROGRAMS = af_ieee802154_tx \
af_ieee802154_rx \
+ af_packet_tx \
af_packet_rx \
af_inet6_rx
diff --git a/examples/af_packet_tx.c b/examples/af_packet_tx.c
new file mode 100644
index 0000000..82a15f4
--- /dev/null
+++ b/examples/af_packet_tx.c
@@ -0,0 +1,109 @@
+/*
+ * IEEE 802.15.4 socket example
+ *
+ * Copyright (C) 2016 Samsung Electronics Co., Ltd.
+ *
+ * Author: Stefan Schmidt <stefan@xxxxxxxxxxxxxxx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* gcc af_packet_tx.c -o af_packet_tx */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+
+#include <net/if.h>
+#include <linux/if_packet.h>
+#include <arpa/inet.h>
+
+#ifndef ETH_P_IEEE802154
+#define ETH_P_IEEE802154 0x00F6
+#endif
+
+#define MAX_PACKET_LEN 127
+
+int main(int argc, char *argv[]) {
+ int ret, sd;
+ ssize_t len;
+ struct sockaddr_ll sll;
+ struct ifreq ifr;
+ unsigned char buf[MAX_PACKET_LEN + 1];
+
+ /* Create AF_PACKET address family socket for the SOCK_RAW type */
+ sd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_IEEE802154));
+ if (sd < 0) {
+ perror("socket");
+ return 1;
+ }
+
+ /* Using a monitor interface here results in a bad FCS and two missing
+ * bytes from payload, using the normal IEEE 802.15.4 interface here */
+ strncpy(ifr.ifr_name, "wpan0", IFNAMSIZ);
+ ret = ioctl(sd, SIOCGIFINDEX, &ifr);
+ if (ret < 0) {
+ perror("ioctl");
+ close(sd);
+ return 1;
+ }
+
+ /* Prepare destination socket address struct */
+ memset(&sll, 0, sizeof(sll));
+ sll.sll_family = AF_PACKET;
+ sll.sll_ifindex = ifr.ifr_ifindex;
+ sll.sll_protocol = htons(ETH_P_IEEE802154);
+
+ /* Bind socket on this side */
+ ret = bind(sd, (struct sockaddr *)&sll, sizeof(sll));
+ if (ret < 0) {
+ perror("bind");
+ close(sd);
+ return 1;
+ }
+
+ /* Construct raw packet payload, length and FCS gets added in the kernel */
+ buf[0] = 0x21; /* Frame Control Field */
+ buf[1] = 0xc8; /* Frame Control Field */
+ buf[2] = 0x8b; /* Sequence number */
+ buf[3] = 0xff; /* Destination PAN ID 0xffff */
+ buf[4] = 0xff; /* Destination PAN ID */
+ buf[5] = 0x02; /* Destination short address 0x0002 */
+ buf[6] = 0x00; /* Destination short address */
+ buf[7] = 0x23; /* Source PAN ID 0x0023 */
+ buf[8] = 0x00; /* */
+ buf[9] = 0x60; /* Source extended address ae:c2:4a:1c:21:16:e2:60 */
+ buf[10] = 0xe2; /* */
+ buf[11] = 0x16; /* */
+ buf[12] = 0x21; /* */
+ buf[13] = 0x1c; /* */
+ buf[14] = 0x4a; /* */
+ buf[15] = 0xc2; /* */
+ buf[16] = 0xae; /* */
+ buf[17] = 0xAA; /* Payload */
+ buf[18] = 0xBB; /* */
+ buf[19] = 0xCC; /* */
+
+ /* Send constructed packet over binded interface */
+ len = send(sd, buf, 20, 0);
+ if (len < 0) {
+ perror("send");
+ }
+
+ shutdown(sd, SHUT_RDWR);
+ close(sd);
+ return 0;
+}
--
2.5.5
--
To unsubscribe from this list: send the line "unsubscribe linux-wpan" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
