Adding upstream version 1:4.13.0.upstream/1%4.13.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 147 insertions, 0 deletions

diff --git a/heartbeat/IPv6addr_utils.c b/heartbeat/IPv6addr_utils.c
new file mode 100644
index 0000000..7672b70
--- /dev/null
+++ b/heartbeat/IPv6addr_utils.c
@@ -0,0 +1,147 @@
+
+/*
+ * This program manages IPv6 address with OCF Resource Agent standard.
+ *
+ * Author: Huang Zhen <zhenh@cn.ibm.com>
+ * Copyright (c) 2004 International Business Machines
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#include <IPv6addr.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <malloc.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <arpa/inet.h> /* for inet_pton */
+#include <net/if.h> /* for if_nametoindex */
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <errno.h>
+
+/* Send an unsolicited advertisement packet
+ * Please refer to rfc4861 / rfc3542
+ */
+int
+send_ua(struct in6_addr* src_ip, char* if_name)
+{
+	int status = -1;
+	int fd;
+
+	int ifindex;
+	int hop;
+	struct ifreq ifr;
+	u_int8_t *payload = NULL;
+	int    payload_size;
+	struct nd_neighbor_advert *na;
+	struct nd_opt_hdr *opt;
+	struct sockaddr_in6 src_sin6;
+	struct sockaddr_in6 dst_sin6;
+
+	if ((fd = socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6)) == -1) {
+		printf("ERROR: socket(IPPROTO_ICMPV6) failed: %s",
+		       strerror(errno));
+		return status;
+	}
+	/* set the outgoing interface */
+	ifindex = if_nametoindex(if_name);
+	if (setsockopt(fd, IPPROTO_IPV6, IPV6_MULTICAST_IF,
+		       &ifindex, sizeof(ifindex)) < 0) {
+		printf("ERROR: setsockopt(IPV6_MULTICAST_IF) failed: %s",
+		       strerror(errno));
+		goto err;
+	}
+	/* set the hop limit */
+	hop = 255; /* 255 is required. see rfc4861 7.1.2 */
+	if (setsockopt(fd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
+		       &hop, sizeof(hop)) < 0) {
+		printf("ERROR: setsockopt(IPV6_MULTICAST_HOPS) failed: %s",
+		       strerror(errno));
+		goto err;
+	}
+
+	/* set the source address */
+	memset(&src_sin6, 0, sizeof(src_sin6));
+	src_sin6.sin6_family = AF_INET6;
+	src_sin6.sin6_addr = *src_ip;
+	src_sin6.sin6_port = 0;
+	if (IN6_IS_ADDR_LINKLOCAL(&src_sin6.sin6_addr) ||
+	    IN6_IS_ADDR_MC_LINKLOCAL(&src_sin6.sin6_addr)) {
+		src_sin6.sin6_scope_id = ifindex;
+	}
+
+	if (bind(fd, (struct sockaddr *)&src_sin6, sizeof(src_sin6)) < 0) {
+		printf("ERROR: bind() failed: %s", strerror(errno));
+		goto err;
+	}
+
+
+	/* get the hardware address */
+	memset(&ifr, 0, sizeof(ifr));
+	strncpy(ifr.ifr_name, if_name, sizeof(ifr.ifr_name) - 1);
+	if (ioctl(fd, SIOCGIFHWADDR, &ifr) < 0) {
+		printf("ERROR: ioctl(SIOCGIFHWADDR) failed: %s", strerror(errno));
+		goto err;
+	}
+
+	/* build a neighbor advertisement message */
+	payload_size = sizeof(struct nd_neighbor_advert)
+			 + sizeof(struct nd_opt_hdr) + HWADDR_LEN;
+	payload = memalign(sysconf(_SC_PAGESIZE), payload_size);
+	if (!payload) {
+		printf("ERROR: malloc for payload failed");
+		goto err;
+	}
+	memset(payload, 0, payload_size);
+
+	/* Ugly typecast from ia64 hell! */
+	na = (struct nd_neighbor_advert *)((void *)payload);
+	na->nd_na_type = ND_NEIGHBOR_ADVERT;
+	na->nd_na_code = 0;
+	na->nd_na_cksum = 0; /* calculated by kernel */
+	na->nd_na_flags_reserved = ND_NA_FLAG_OVERRIDE;
+	na->nd_na_target = *src_ip;
+
+	/* options field; set the target link-layer address */
+	opt = (struct nd_opt_hdr *)(payload + sizeof(struct nd_neighbor_advert));
+	opt->nd_opt_type = ND_OPT_TARGET_LINKADDR;
+	opt->nd_opt_len = 1; /* The length of the option in units of 8 octets */
+	memcpy(payload + sizeof(struct nd_neighbor_advert)
+			+ sizeof(struct nd_opt_hdr),
+	       &ifr.ifr_hwaddr.sa_data, HWADDR_LEN);
+
+	/* sending an unsolicited neighbor advertisement to all */
+	memset(&dst_sin6, 0, sizeof(dst_sin6));
+	dst_sin6.sin6_family = AF_INET6;
+	inet_pton(AF_INET6, BCAST_ADDR, &dst_sin6.sin6_addr); /* should not fail */
+
+	if (sendto(fd, payload, payload_size, 0,
+		   (struct sockaddr *)&dst_sin6, sizeof(dst_sin6))
+	    != payload_size) {
+		printf("ERROR: sendto(%s) failed: %s",
+		       if_name, strerror(errno));
+		goto err;
+	}
+
+	status = 0;
+
+err:
+	close(fd);
+	free(payload);
+	return status;
+}