Merge pull request #12222 from yuwata/macsec

network: introduce MACsec
2019-04-12 13:59:30 +02:00
parent 3661dc349e 02849d8b4f
commit b51629ad84
28 changed files with 2322 additions and 353 deletions
@@ -317,7 +317,8 @@ int read_full_stream_full(

        assert(f);
        assert(ret_contents);
-        assert(!(flags & READ_FULL_FILE_UNBASE64) || ret_size);
+        assert(!FLAGS_SET(flags, READ_FULL_FILE_UNBASE64 | READ_FULL_FILE_UNHEX));
+        assert(!(flags & (READ_FULL_FILE_UNBASE64 | READ_FULL_FILE_UNHEX)) || ret_size);

        n_next = LINE_MAX; /* Start size */

@@ -394,9 +395,12 @@ int read_full_stream_full(
                n_next = MIN(n * 2, READ_FULL_BYTES_MAX);
        }

-        if (flags & READ_FULL_FILE_UNBASE64) {
+        if (flags & (READ_FULL_FILE_UNBASE64 | READ_FULL_FILE_UNHEX)) {
                buf[l++] = 0;
-                r = unbase64mem_full(buf, l, flags & READ_FULL_FILE_SECURE, (void **) ret_contents, ret_size);
+                if (flags & READ_FULL_FILE_UNBASE64)
+                        r = unbase64mem_full(buf, l, flags & READ_FULL_FILE_SECURE, (void **) ret_contents, ret_size);
+                else
+                        r = unhexmem_full(buf, l, flags & READ_FULL_FILE_SECURE, (void **) ret_contents, ret_size);
                goto finalize;
        }

@@ -31,6 +31,7 @@ typedef enum {
 typedef enum {
        READ_FULL_FILE_SECURE   = 1 << 0,
        READ_FULL_FILE_UNBASE64 = 1 << 1,
+        READ_FULL_FILE_UNHEX    = 1 << 2,
 } ReadFullFileFlags;

 int fopen_unlocked(const char *path, const char *options, FILE **ret);
@@ -108,10 +108,12 @@ static int unhex_next(const char **p, size_t *l) {
        return r;
 }

-int unhexmem(const char *p, size_t l, void **ret, size_t *ret_len) {
+int unhexmem_full(const char *p, size_t l, bool secure, void **ret, size_t *ret_len) {
        _cleanup_free_ uint8_t *buf = NULL;
+        size_t buf_size;
        const char *x;
        uint8_t *z;
+        int r;

        assert(ret);
        assert(ret_len);
@@ -121,7 +123,8 @@ int unhexmem(const char *p, size_t l, void **ret, size_t *ret_len) {
                l = strlen(p);

        /* Note that the calculation of memory size is an upper boundary, as we ignore whitespace while decoding */
-        buf = malloc((l + 1) / 2 + 1);
+        buf_size = (l + 1) / 2 + 1;
+        buf = malloc(buf_size);
        if (!buf)
                return -ENOMEM;

@@ -131,12 +134,16 @@ int unhexmem(const char *p, size_t l, void **ret, size_t *ret_len) {
                a = unhex_next(&x, &l);
                if (a == -EPIPE) /* End of string */
                        break;
-                if (a < 0)
-                        return a;
+                if (a < 0) {
+                        r = a;
+                        goto on_failure;
+                }

                b = unhex_next(&x, &l);
-                if (b < 0)
-                        return b;
+                if (b < 0) {
+                        r = b;
+                        goto on_failure;
+                }

                *(z++) = (uint8_t) a << 4 | (uint8_t) b;
        }
@@ -147,6 +154,12 @@ int unhexmem(const char *p, size_t l, void **ret, size_t *ret_len) {
        *ret = TAKE_PTR(buf);

        return 0;
+
+on_failure:
+        if (secure)
+                explicit_bzero_safe(buf, buf_size);
+
+        return r;
 }

 /* https://tools.ietf.org/html/rfc4648#section-6
@@ -18,7 +18,10 @@ char hexchar(int x) _const_;
 int unhexchar(char c) _const_;

 char *hexmem(const void *p, size_t l);
-int unhexmem(const char *p, size_t l, void **mem, size_t *len);
+int unhexmem_full(const char *p, size_t l, bool secure, void **mem, size_t *len);
+static inline int unhexmem(const char *p, size_t l, void **mem, size_t *len) {
+        return unhexmem_full(p, l, false, mem, len);
+}

 char base32hexchar(int x) _const_;
 int unbase32hexchar(char c) _const_;
@@ -0,0 +1,177 @@
+/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
+/*
+ * include/uapi/linux/if_macsec.h - MACsec device
+ *
+ * Copyright (c) 2015 Sabrina Dubroca <sd@queasysnail.net>
+ *
+ * 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.
+ */
+
+#ifndef _UAPI_MACSEC_H
+#define _UAPI_MACSEC_H
+
+#include <linux/types.h>
+
+#define MACSEC_GENL_NAME "macsec"
+#define MACSEC_GENL_VERSION 1
+
+#define MACSEC_MAX_KEY_LEN 128
+
+#define MACSEC_KEYID_LEN 16
+
+/* cipher IDs as per IEEE802.1AEbn-2011 */
+#define MACSEC_CIPHER_ID_GCM_AES_128 0x0080C20001000001ULL
+#define MACSEC_CIPHER_ID_GCM_AES_256 0x0080C20001000002ULL
+
+/* deprecated cipher ID for GCM-AES-128 */
+#define MACSEC_DEFAULT_CIPHER_ID     0x0080020001000001ULL
+#define MACSEC_DEFAULT_CIPHER_ALT    MACSEC_CIPHER_ID_GCM_AES_128
+
+#define MACSEC_MIN_ICV_LEN 8
+#define MACSEC_MAX_ICV_LEN 32
+/* upper limit for ICV length as recommended by IEEE802.1AE-2006 */
+#define MACSEC_STD_ICV_LEN 16
+
+enum macsec_attrs {
+	MACSEC_ATTR_UNSPEC,
+	MACSEC_ATTR_IFINDEX,     /* u32, ifindex of the MACsec netdevice */
+	MACSEC_ATTR_RXSC_CONFIG, /* config, nested macsec_rxsc_attrs */
+	MACSEC_ATTR_SA_CONFIG,   /* config, nested macsec_sa_attrs */
+	MACSEC_ATTR_SECY,        /* dump, nested macsec_secy_attrs */
+	MACSEC_ATTR_TXSA_LIST,   /* dump, nested, macsec_sa_attrs for each TXSA */
+	MACSEC_ATTR_RXSC_LIST,   /* dump, nested, macsec_rxsc_attrs for each RXSC */
+	MACSEC_ATTR_TXSC_STATS,  /* dump, nested, macsec_txsc_stats_attr */
+	MACSEC_ATTR_SECY_STATS,  /* dump, nested, macsec_secy_stats_attr */
+	__MACSEC_ATTR_END,
+	NUM_MACSEC_ATTR = __MACSEC_ATTR_END,
+	MACSEC_ATTR_MAX = __MACSEC_ATTR_END - 1,
+};
+
+enum macsec_secy_attrs {
+	MACSEC_SECY_ATTR_UNSPEC,
+	MACSEC_SECY_ATTR_SCI,
+	MACSEC_SECY_ATTR_ENCODING_SA,
+	MACSEC_SECY_ATTR_WINDOW,
+	MACSEC_SECY_ATTR_CIPHER_SUITE,
+	MACSEC_SECY_ATTR_ICV_LEN,
+	MACSEC_SECY_ATTR_PROTECT,
+	MACSEC_SECY_ATTR_REPLAY,
+	MACSEC_SECY_ATTR_OPER,
+	MACSEC_SECY_ATTR_VALIDATE,
+	MACSEC_SECY_ATTR_ENCRYPT,
+	MACSEC_SECY_ATTR_INC_SCI,
+	MACSEC_SECY_ATTR_ES,
+	MACSEC_SECY_ATTR_SCB,
+	MACSEC_SECY_ATTR_PAD,
+	__MACSEC_SECY_ATTR_END,
+	NUM_MACSEC_SECY_ATTR = __MACSEC_SECY_ATTR_END,
+	MACSEC_SECY_ATTR_MAX = __MACSEC_SECY_ATTR_END - 1,
+};
+
+enum macsec_rxsc_attrs {
+	MACSEC_RXSC_ATTR_UNSPEC,
+	MACSEC_RXSC_ATTR_SCI,     /* config/dump, u64 */
+	MACSEC_RXSC_ATTR_ACTIVE,  /* config/dump, u8 0..1 */
+	MACSEC_RXSC_ATTR_SA_LIST, /* dump, nested */
+	MACSEC_RXSC_ATTR_STATS,   /* dump, nested, macsec_rxsc_stats_attr */
+	MACSEC_RXSC_ATTR_PAD,
+	__MACSEC_RXSC_ATTR_END,
+	NUM_MACSEC_RXSC_ATTR = __MACSEC_RXSC_ATTR_END,
+	MACSEC_RXSC_ATTR_MAX = __MACSEC_RXSC_ATTR_END - 1,
+};
+
+enum macsec_sa_attrs {
+	MACSEC_SA_ATTR_UNSPEC,
+	MACSEC_SA_ATTR_AN,     /* config/dump, u8 0..3 */
+	MACSEC_SA_ATTR_ACTIVE, /* config/dump, u8 0..1 */
+	MACSEC_SA_ATTR_PN,     /* config/dump, u32 */
+	MACSEC_SA_ATTR_KEY,    /* config, data */
+	MACSEC_SA_ATTR_KEYID,  /* config/dump, 128-bit */
+	MACSEC_SA_ATTR_STATS,  /* dump, nested, macsec_sa_stats_attr */
+	MACSEC_SA_ATTR_PAD,
+	__MACSEC_SA_ATTR_END,
+	NUM_MACSEC_SA_ATTR = __MACSEC_SA_ATTR_END,
+	MACSEC_SA_ATTR_MAX = __MACSEC_SA_ATTR_END - 1,
+};
+
+enum macsec_nl_commands {
+	MACSEC_CMD_GET_TXSC,
+	MACSEC_CMD_ADD_RXSC,
+	MACSEC_CMD_DEL_RXSC,
+	MACSEC_CMD_UPD_RXSC,
+	MACSEC_CMD_ADD_TXSA,
+	MACSEC_CMD_DEL_TXSA,
+	MACSEC_CMD_UPD_TXSA,
+	MACSEC_CMD_ADD_RXSA,
+	MACSEC_CMD_DEL_RXSA,
+	MACSEC_CMD_UPD_RXSA,
+};
+
+/* u64 per-RXSC stats */
+enum macsec_rxsc_stats_attr {
+	MACSEC_RXSC_STATS_ATTR_UNSPEC,
+	MACSEC_RXSC_STATS_ATTR_IN_OCTETS_VALIDATED,
+	MACSEC_RXSC_STATS_ATTR_IN_OCTETS_DECRYPTED,
+	MACSEC_RXSC_STATS_ATTR_IN_PKTS_UNCHECKED,
+	MACSEC_RXSC_STATS_ATTR_IN_PKTS_DELAYED,
+	MACSEC_RXSC_STATS_ATTR_IN_PKTS_OK,
+	MACSEC_RXSC_STATS_ATTR_IN_PKTS_INVALID,
+	MACSEC_RXSC_STATS_ATTR_IN_PKTS_LATE,
+	MACSEC_RXSC_STATS_ATTR_IN_PKTS_NOT_VALID,
+	MACSEC_RXSC_STATS_ATTR_IN_PKTS_NOT_USING_SA,
+	MACSEC_RXSC_STATS_ATTR_IN_PKTS_UNUSED_SA,
+	MACSEC_RXSC_STATS_ATTR_PAD,
+	__MACSEC_RXSC_STATS_ATTR_END,
+	NUM_MACSEC_RXSC_STATS_ATTR = __MACSEC_RXSC_STATS_ATTR_END,
+	MACSEC_RXSC_STATS_ATTR_MAX = __MACSEC_RXSC_STATS_ATTR_END - 1,
+};
+
+/* u32 per-{RX,TX}SA stats */
+enum macsec_sa_stats_attr {
+	MACSEC_SA_STATS_ATTR_UNSPEC,
+	MACSEC_SA_STATS_ATTR_IN_PKTS_OK,
+	MACSEC_SA_STATS_ATTR_IN_PKTS_INVALID,
+	MACSEC_SA_STATS_ATTR_IN_PKTS_NOT_VALID,
+	MACSEC_SA_STATS_ATTR_IN_PKTS_NOT_USING_SA,
+	MACSEC_SA_STATS_ATTR_IN_PKTS_UNUSED_SA,
+	MACSEC_SA_STATS_ATTR_OUT_PKTS_PROTECTED,
+	MACSEC_SA_STATS_ATTR_OUT_PKTS_ENCRYPTED,
+	__MACSEC_SA_STATS_ATTR_END,
+	NUM_MACSEC_SA_STATS_ATTR = __MACSEC_SA_STATS_ATTR_END,
+	MACSEC_SA_STATS_ATTR_MAX = __MACSEC_SA_STATS_ATTR_END - 1,
+};
+
+/* u64 per-TXSC stats */
+enum macsec_txsc_stats_attr {
+	MACSEC_TXSC_STATS_ATTR_UNSPEC,
+	MACSEC_TXSC_STATS_ATTR_OUT_PKTS_PROTECTED,
+	MACSEC_TXSC_STATS_ATTR_OUT_PKTS_ENCRYPTED,
+	MACSEC_TXSC_STATS_ATTR_OUT_OCTETS_PROTECTED,
+	MACSEC_TXSC_STATS_ATTR_OUT_OCTETS_ENCRYPTED,
+	MACSEC_TXSC_STATS_ATTR_PAD,
+	__MACSEC_TXSC_STATS_ATTR_END,
+	NUM_MACSEC_TXSC_STATS_ATTR = __MACSEC_TXSC_STATS_ATTR_END,
+	MACSEC_TXSC_STATS_ATTR_MAX = __MACSEC_TXSC_STATS_ATTR_END - 1,
+};
+
+/* u64 per-SecY stats */
+enum macsec_secy_stats_attr {
+	MACSEC_SECY_STATS_ATTR_UNSPEC,
+	MACSEC_SECY_STATS_ATTR_OUT_PKTS_UNTAGGED,
+	MACSEC_SECY_STATS_ATTR_IN_PKTS_UNTAGGED,
+	MACSEC_SECY_STATS_ATTR_OUT_PKTS_TOO_LONG,
+	MACSEC_SECY_STATS_ATTR_IN_PKTS_NO_TAG,
+	MACSEC_SECY_STATS_ATTR_IN_PKTS_BAD_TAG,
+	MACSEC_SECY_STATS_ATTR_IN_PKTS_UNKNOWN_SCI,
+	MACSEC_SECY_STATS_ATTR_IN_PKTS_NO_SCI,
+	MACSEC_SECY_STATS_ATTR_IN_PKTS_OVERRUN,
+	MACSEC_SECY_STATS_ATTR_PAD,
+	__MACSEC_SECY_STATS_ATTR_END,
+	NUM_MACSEC_SECY_STATS_ATTR = __MACSEC_SECY_STATS_ATTR_END,
+	MACSEC_SECY_STATS_ATTR_MAX = __MACSEC_SECY_STATS_ATTR_END - 1,
+};
+
+#endif /* _UAPI_MACSEC_H */
@@ -95,6 +95,7 @@ basic_sources = files('''
        linux/if_bonding.h
        linux/if_bridge.h
        linux/if_link.h
+        linux/if_macsec.h
        linux/if_tun.h
        linux/if_tunnel.h
        linux/libc-compat.h