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authorIlya Dryomov <idryomov@gmail.com>2020-11-19 16:04:58 +0100
committerIlya Dryomov <idryomov@gmail.com>2020-12-14 23:21:50 +0100
commit00498b994113a871a556f7ff24a4cf8a00611700 (patch)
tree22c84bb86f64957cecb8f7b2d196b1630263fea4 /net
parent313771e80fd253d4b5472e61a2d12b03c5293aa9 (diff)
downloadlinux-00498b994113a871a556f7ff24a4cf8a00611700.tar.bz2
libceph: introduce connection modes and ms_mode option
msgr2 supports two connection modes: crc (plain) and secure (on-wire encryption). Connection mode is picked by server based on input from client. Introduce ms_mode option: ms_mode=legacy - msgr1 (default) ms_mode=crc - crc mode, if denied fail ms_mode=secure - secure mode, if denied fail ms_mode=prefer-crc - crc mode, if denied agree to secure mode ms_mode=prefer-secure - secure mode, if denied agree to crc mode ms_mode affects all connections, we don't separate connections to mons like it's done in userspace with ms_client_mode vs ms_mon_client_mode. For now the default is legacy, to be flipped to prefer-crc after some time. Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'net')
-rw-r--r--net/ceph/auth.c12
-rw-r--r--net/ceph/ceph_common.c63
-rw-r--r--net/ceph/ceph_strings.c14
-rw-r--r--net/ceph/mon_client.c4
4 files changed, 87 insertions, 6 deletions
diff --git a/net/ceph/auth.c b/net/ceph/auth.c
index deaf267f8942..4a0f32b32cc6 100644
--- a/net/ceph/auth.c
+++ b/net/ceph/auth.c
@@ -39,13 +39,13 @@ static int init_protocol(struct ceph_auth_client *ac, int proto)
/*
* setup, teardown.
*/
-struct ceph_auth_client *ceph_auth_init(const char *name, const struct ceph_crypto_key *key)
+struct ceph_auth_client *ceph_auth_init(const char *name,
+ const struct ceph_crypto_key *key,
+ const int *con_modes)
{
struct ceph_auth_client *ac;
int ret;
- dout("auth_init name '%s'\n", name);
-
ret = -ENOMEM;
ac = kzalloc(sizeof(*ac), GFP_NOFS);
if (!ac)
@@ -57,8 +57,12 @@ struct ceph_auth_client *ceph_auth_init(const char *name, const struct ceph_cryp
ac->name = name;
else
ac->name = CEPH_AUTH_NAME_DEFAULT;
- dout("auth_init name %s\n", ac->name);
ac->key = key;
+ ac->preferred_mode = con_modes[0];
+ ac->fallback_mode = con_modes[1];
+
+ dout("%s name '%s' preferred_mode %d fallback_mode %d\n", __func__,
+ ac->name, ac->preferred_mode, ac->fallback_mode);
return ac;
out:
diff --git a/net/ceph/ceph_common.c b/net/ceph/ceph_common.c
index 4e7edd707a14..271287c5ec12 100644
--- a/net/ceph/ceph_common.c
+++ b/net/ceph/ceph_common.c
@@ -265,6 +265,7 @@ enum {
Opt_ip,
Opt_crush_location,
Opt_read_from_replica,
+ Opt_ms_mode,
/* string args above */
Opt_share,
Opt_crc,
@@ -287,6 +288,23 @@ static const struct constant_table ceph_param_read_from_replica[] = {
{}
};
+enum ceph_ms_mode {
+ Opt_ms_mode_legacy,
+ Opt_ms_mode_crc,
+ Opt_ms_mode_secure,
+ Opt_ms_mode_prefer_crc,
+ Opt_ms_mode_prefer_secure
+};
+
+static const struct constant_table ceph_param_ms_mode[] = {
+ {"legacy", Opt_ms_mode_legacy},
+ {"crc", Opt_ms_mode_crc},
+ {"secure", Opt_ms_mode_secure},
+ {"prefer-crc", Opt_ms_mode_prefer_crc},
+ {"prefer-secure", Opt_ms_mode_prefer_secure},
+ {}
+};
+
static const struct fs_parameter_spec ceph_parameters[] = {
fsparam_flag ("abort_on_full", Opt_abort_on_full),
fsparam_flag_no ("cephx_require_signatures", Opt_cephx_require_signatures),
@@ -305,6 +323,8 @@ static const struct fs_parameter_spec ceph_parameters[] = {
fs_param_deprecated, NULL),
fsparam_enum ("read_from_replica", Opt_read_from_replica,
ceph_param_read_from_replica),
+ fsparam_enum ("ms_mode", Opt_ms_mode,
+ ceph_param_ms_mode),
fsparam_string ("secret", Opt_secret),
fsparam_flag_no ("share", Opt_share),
fsparam_flag_no ("tcp_nodelay", Opt_tcp_nodelay),
@@ -333,6 +353,8 @@ struct ceph_options *ceph_alloc_options(void)
opt->osd_idle_ttl = CEPH_OSD_IDLE_TTL_DEFAULT;
opt->osd_request_timeout = CEPH_OSD_REQUEST_TIMEOUT_DEFAULT;
opt->read_from_replica = CEPH_READ_FROM_REPLICA_DEFAULT;
+ opt->con_modes[0] = CEPH_CON_MODE_UNKNOWN;
+ opt->con_modes[1] = CEPH_CON_MODE_UNKNOWN;
return opt;
}
EXPORT_SYMBOL(ceph_alloc_options);
@@ -503,6 +525,32 @@ int ceph_parse_param(struct fs_parameter *param, struct ceph_options *opt,
BUG();
}
break;
+ case Opt_ms_mode:
+ switch (result.uint_32) {
+ case Opt_ms_mode_legacy:
+ opt->con_modes[0] = CEPH_CON_MODE_UNKNOWN;
+ opt->con_modes[1] = CEPH_CON_MODE_UNKNOWN;
+ break;
+ case Opt_ms_mode_crc:
+ opt->con_modes[0] = CEPH_CON_MODE_CRC;
+ opt->con_modes[1] = CEPH_CON_MODE_UNKNOWN;
+ break;
+ case Opt_ms_mode_secure:
+ opt->con_modes[0] = CEPH_CON_MODE_SECURE;
+ opt->con_modes[1] = CEPH_CON_MODE_UNKNOWN;
+ break;
+ case Opt_ms_mode_prefer_crc:
+ opt->con_modes[0] = CEPH_CON_MODE_CRC;
+ opt->con_modes[1] = CEPH_CON_MODE_SECURE;
+ break;
+ case Opt_ms_mode_prefer_secure:
+ opt->con_modes[0] = CEPH_CON_MODE_SECURE;
+ opt->con_modes[1] = CEPH_CON_MODE_CRC;
+ break;
+ default:
+ BUG();
+ }
+ break;
case Opt_osdtimeout:
warn_plog(&log, "Ignoring osdtimeout");
@@ -616,6 +664,21 @@ int ceph_print_client_options(struct seq_file *m, struct ceph_client *client,
} else if (opt->read_from_replica == CEPH_OSD_FLAG_LOCALIZE_READS) {
seq_puts(m, "read_from_replica=localize,");
}
+ if (opt->con_modes[0] != CEPH_CON_MODE_UNKNOWN) {
+ if (opt->con_modes[0] == CEPH_CON_MODE_CRC &&
+ opt->con_modes[1] == CEPH_CON_MODE_UNKNOWN) {
+ seq_puts(m, "ms_mode=crc,");
+ } else if (opt->con_modes[0] == CEPH_CON_MODE_SECURE &&
+ opt->con_modes[1] == CEPH_CON_MODE_UNKNOWN) {
+ seq_puts(m, "ms_mode=secure,");
+ } else if (opt->con_modes[0] == CEPH_CON_MODE_CRC &&
+ opt->con_modes[1] == CEPH_CON_MODE_SECURE) {
+ seq_puts(m, "ms_mode=prefer-crc,");
+ } else if (opt->con_modes[0] == CEPH_CON_MODE_SECURE &&
+ opt->con_modes[1] == CEPH_CON_MODE_CRC) {
+ seq_puts(m, "ms_mode=prefer-secure,");
+ }
+ }
if (opt->flags & CEPH_OPT_FSID)
seq_printf(m, "fsid=%pU,", &opt->fsid);
diff --git a/net/ceph/ceph_strings.c b/net/ceph/ceph_strings.c
index 69cd391e02a6..355fea272120 100644
--- a/net/ceph/ceph_strings.c
+++ b/net/ceph/ceph_strings.c
@@ -32,6 +32,20 @@ const char *ceph_auth_proto_name(int proto)
}
}
+const char *ceph_con_mode_name(int mode)
+{
+ switch (mode) {
+ case CEPH_CON_MODE_UNKNOWN:
+ return "unknown";
+ case CEPH_CON_MODE_CRC:
+ return "crc";
+ case CEPH_CON_MODE_SECURE:
+ return "secure";
+ default:
+ return "???";
+ }
+}
+
const char *ceph_osd_op_name(int op)
{
switch (op) {
diff --git a/net/ceph/mon_client.c b/net/ceph/mon_client.c
index f5f090b4e409..792a8c4164d7 100644
--- a/net/ceph/mon_client.c
+++ b/net/ceph/mon_client.c
@@ -1156,8 +1156,8 @@ int ceph_monc_init(struct ceph_mon_client *monc, struct ceph_client *cl)
/* connection */
/* authentication */
- monc->auth = ceph_auth_init(cl->options->name,
- cl->options->key);
+ monc->auth = ceph_auth_init(cl->options->name, cl->options->key,
+ cl->options->con_modes);
if (IS_ERR(monc->auth)) {
err = PTR_ERR(monc->auth);
goto out_monmap;