Adding upstream version 8.4.4.upstream/8.4.4upstream

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

1 files changed, 167 insertions, 0 deletions

diff --git a/pimd/pim_addr.h b/pimd/pim_addr.h
new file mode 100644
index 0000000..7852d17
--- /dev/null
+++ b/pimd/pim_addr.h
@@ -0,0 +1,167 @@
+/*
+ * PIM address generalizations
+ * Copyright (C) 2022  David Lamparter for NetDEF, Inc.
+ *
+ * This program 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 program 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; see the file COPYING; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef _PIMD_PIM_ADDR_H
+#define _PIMD_PIM_ADDR_H
+
+#include "jhash.h"
+#include "prefix.h"
+
+/* clang-format off */
+
+#if PIM_IPV == 4
+typedef struct in_addr pim_addr;
+
+#define PIM_ADDRSTRLEN	INET_ADDRSTRLEN
+#define PIM_AF		AF_INET
+#define PIM_AFI		AFI_IP
+#define PIM_PROTO_REG   IPPROTO_RAW
+#define PIM_IPADDR	IPADDR_V4
+#define ipaddr_pim	ipaddr_v4
+#define PIM_MAX_BITLEN	IPV4_MAX_BITLEN
+#define PIM_AF_NAME     "ip"
+#define PIM_AF_DBG	"pim"
+#define PIM_MROUTE_DBG  "mroute"
+#define PIMREG          "pimreg"
+#define GM              "IGMP"
+
+#define PIM_ADDR_FUNCNAME(name) ipv4_##name
+
+union pimprefixptr {
+	prefixtype(pimprefixptr, struct prefix,      p)
+	prefixtype(pimprefixptr, struct prefix_ipv4, p4)
+} TRANSPARENT_UNION;
+
+union pimprefixconstptr {
+	prefixtype(pimprefixconstptr, const struct prefix,      p)
+	prefixtype(pimprefixconstptr, const struct prefix_ipv4, p4)
+} TRANSPARENT_UNION;
+
+#else
+typedef struct in6_addr pim_addr;
+
+#define PIM_ADDRSTRLEN	INET6_ADDRSTRLEN
+#define PIM_AF		AF_INET6
+#define PIM_AFI		AFI_IP6
+#define PIM_PROTO_REG   IPPROTO_PIM
+#define PIM_IPADDR	IPADDR_V6
+#define ipaddr_pim	ipaddr_v6
+#define PIM_MAX_BITLEN	IPV6_MAX_BITLEN
+#define PIM_AF_NAME     "ipv6"
+#define PIM_AF_DBG	"pimv6"
+#define PIM_MROUTE_DBG  "mroute6"
+#define PIMREG          "pim6reg"
+#define GM              "MLD"
+
+#define PIM_ADDR_FUNCNAME(name) ipv6_##name
+
+union pimprefixptr {
+	prefixtype(pimprefixptr, struct prefix,      p)
+	prefixtype(pimprefixptr, struct prefix_ipv6, p6)
+} TRANSPARENT_UNION;
+
+union pimprefixconstptr {
+	prefixtype(pimprefixconstptr, const struct prefix,      p)
+	prefixtype(pimprefixconstptr, const struct prefix_ipv6, p6)
+} TRANSPARENT_UNION;
+#endif
+
+/* for assignment/initialization (C99 compound literal)
+ * named PIMADDR_ANY (not PIM_ADDR_ANY) to match INADDR_ANY
+ */
+#define PIMADDR_ANY (pim_addr){ }
+
+/* clang-format on */
+
+static inline bool pim_addr_is_any(pim_addr addr)
+{
+	pim_addr zero = {};
+
+	return memcmp(&addr, &zero, sizeof(zero)) == 0;
+}
+
+static inline int pim_addr_cmp(pim_addr a, pim_addr b)
+{
+	return memcmp(&a, &b, sizeof(a));
+}
+
+static inline void pim_addr_to_prefix(union pimprefixptr out, pim_addr in)
+{
+	out.p->family = PIM_AF;
+	out.p->prefixlen = PIM_MAX_BITLEN;
+	memcpy(out.p->u.val, &in, sizeof(in));
+}
+
+static inline pim_addr pim_addr_from_prefix(union pimprefixconstptr in)
+{
+	pim_addr ret;
+
+	if (in.p->family != PIM_AF)
+		return PIMADDR_ANY;
+
+	memcpy(&ret, in.p->u.val, sizeof(ret));
+	return ret;
+}
+
+static inline uint8_t pim_addr_scope(const pim_addr addr)
+{
+	return PIM_ADDR_FUNCNAME(mcast_scope)(&addr);
+}
+
+static inline bool pim_addr_nofwd(const pim_addr addr)
+{
+	return PIM_ADDR_FUNCNAME(mcast_nofwd)(&addr);
+}
+
+static inline bool pim_addr_ssm(const pim_addr addr)
+{
+	return PIM_ADDR_FUNCNAME(mcast_ssm)(&addr);
+}
+
+/* don't use this struct directly, use the pim_sgaddr typedef */
+struct _pim_sgaddr {
+	pim_addr grp;
+	pim_addr src;
+};
+
+typedef struct _pim_sgaddr pim_sgaddr;
+
+static inline int pim_sgaddr_cmp(const pim_sgaddr a, const pim_sgaddr b)
+{
+	/* memcmp over the entire struct = memcmp(grp) + memcmp(src) */
+	return memcmp(&a, &b, sizeof(a));
+}
+
+static inline uint32_t pim_sgaddr_hash(const pim_sgaddr a, uint32_t initval)
+{
+	return jhash2((uint32_t *)&a, sizeof(a) / sizeof(uint32_t), initval);
+}
+
+#ifdef _FRR_ATTRIBUTE_PRINTFRR
+#pragma FRR printfrr_ext "%pPA" (pim_addr *)
+#pragma FRR printfrr_ext "%pSG" (pim_sgaddr *)
+#endif
+
+/*
+ * There is no pim_sgaddr2str().  This is intentional.  Instead, use:
+ *	snprintfrr(buf, sizeof(buf), "%pPA", sgaddr)
+ * (and note that snprintfrr is implicit for vty_out and zlog_*)
+ */
+
+#endif /* _PIMD_PIM_ADDR_H */