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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 13:00:47 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 13:00:47 +0000
commit2cb7e0aaedad73b076ea18c6900b0e86c5760d79 (patch)
treeda68ca54bb79f4080079bf0828acda937593a4e1 /src/basic/ether-addr-util.h
parentInitial commit. (diff)
downloadsystemd-2cb7e0aaedad73b076ea18c6900b0e86c5760d79.tar.xz
systemd-2cb7e0aaedad73b076ea18c6900b0e86c5760d79.zip
Adding upstream version 247.3.upstream/247.3upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/basic/ether-addr-util.h')
-rw-r--r--src/basic/ether-addr-util.h52
1 files changed, 52 insertions, 0 deletions
diff --git a/src/basic/ether-addr-util.h b/src/basic/ether-addr-util.h
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--- /dev/null
+++ b/src/basic/ether-addr-util.h
@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include <linux/if_infiniband.h>
+#include <net/ethernet.h>
+#include <stdbool.h>
+
+#include "hash-funcs.h"
+
+/* This is MAX_ADDR_LEN as defined in linux/netdevice.h, but net/if_arp.h
+ * defines a macro of the same name with a much lower size. */
+#define HW_ADDR_MAX_SIZE 32
+
+union hw_addr_union {
+ struct ether_addr ether;
+ uint8_t infiniband[INFINIBAND_ALEN];
+ uint8_t bytes[HW_ADDR_MAX_SIZE];
+};
+
+typedef struct hw_addr_data {
+ union hw_addr_union addr;
+ size_t length;
+} hw_addr_data;
+
+#define HW_ADDR_TO_STRING_MAX (3*HW_ADDR_MAX_SIZE)
+char* hw_addr_to_string(const hw_addr_data *addr, char buffer[HW_ADDR_TO_STRING_MAX]);
+
+/* Use only as function argument, never stand-alone! */
+#define HW_ADDR_TO_STR(hw_addr) hw_addr_to_string((hw_addr), (char[HW_ADDR_TO_STRING_MAX]){})
+
+#define HW_ADDR_NULL ((const hw_addr_data){})
+
+#define ETHER_ADDR_FORMAT_STR "%02X%02X%02X%02X%02X%02X"
+#define ETHER_ADDR_FORMAT_VAL(x) (x).ether_addr_octet[0], (x).ether_addr_octet[1], (x).ether_addr_octet[2], (x).ether_addr_octet[3], (x).ether_addr_octet[4], (x).ether_addr_octet[5]
+
+#define ETHER_ADDR_TO_STRING_MAX (3*6)
+char* ether_addr_to_string(const struct ether_addr *addr, char buffer[ETHER_ADDR_TO_STRING_MAX]);
+
+int ether_addr_compare(const struct ether_addr *a, const struct ether_addr *b);
+static inline bool ether_addr_equal(const struct ether_addr *a, const struct ether_addr *b) {
+ return ether_addr_compare(a, b) == 0;
+}
+
+#define ETHER_ADDR_NULL ((const struct ether_addr){})
+
+static inline bool ether_addr_is_null(const struct ether_addr *addr) {
+ return ether_addr_equal(addr, &ETHER_ADDR_NULL);
+}
+
+int ether_addr_from_string(const char *s, struct ether_addr *ret);
+
+extern const struct hash_ops ether_addr_hash_ops;