From: Hannes Reinecke <hare@suse.de>
To: Christoph Hellwig <hch@lst.de>
Cc: Sagi Grimberg <sagi@grimberg.me>, Keith Busch <kbusch@kernel.org>,
linux-nvme@lists.infradead.org,
Chuck Lever <chuck.lever@oracle.com>,
kernel-tls-handshake@lists.linux.dev,
Hannes Reinecke <hare@suse.de>
Subject: [PATCH 02/18] nvme-keyring: define a 'psk' keytype
Date: Wed, 29 Mar 2023 15:59:22 +0200 [thread overview]
Message-ID: <20230329135938.46905-3-hare@suse.de> (raw)
In-Reply-To: <20230329135938.46905-1-hare@suse.de>
Define a 'psk' keytype to hold the NVMe TLS PSKs.
Signed-off-by: Hannes Reinecke <hare@suse.de>
---
drivers/nvme/common/keyring.c | 98 +++++++++++++++++++++++++++++++++++
include/linux/nvme-keyring.h | 6 +++
2 files changed, 104 insertions(+)
diff --git a/drivers/nvme/common/keyring.c b/drivers/nvme/common/keyring.c
index 3a6e8a0b38e2..4ac33538f839 100644
--- a/drivers/nvme/common/keyring.c
+++ b/drivers/nvme/common/keyring.c
@@ -5,12 +5,104 @@
#include <linux/module.h>
#include <linux/nvme.h>
+#include <linux/nvme-tcp.h>
#include <linux/seq_file.h>
#include <linux/key-type.h>
#include <keys/user-type.h>
static struct key *nvme_keyring;
+key_serial_t nvme_keyring_id(void)
+{
+ return nvme_keyring->serial;
+}
+EXPORT_SYMBOL_GPL(nvme_keyring_id);
+
+static void nvme_tls_psk_describe(const struct key *key, struct seq_file *m)
+{
+ seq_puts(m, key->description);
+ seq_printf(m, ": %u", key->datalen);
+}
+
+static bool nvme_tls_psk_match(const struct key *key,
+ const struct key_match_data *match_data)
+{
+ const char *match_id;
+ size_t match_len;
+
+ if (!key->description) {
+ pr_debug("%s: no key description\n", __func__);
+ return false;
+ }
+ match_len = strlen(key->description);
+ pr_debug("%s: id %s len %zd\n", __func__, key->description, match_len);
+
+ if (!match_data->raw_data) {
+ pr_debug("%s: no match data\n", __func__);
+ return false;
+ }
+ match_id = match_data->raw_data;
+ pr_debug("%s: match '%s' '%s' len %zd\n",
+ __func__, match_id, key->description, match_len);
+ return !memcmp(key->description, match_id, match_len);
+}
+
+static int nvme_tls_psk_match_preparse(struct key_match_data *match_data)
+{
+ match_data->lookup_type = KEYRING_SEARCH_LOOKUP_ITERATE;
+ match_data->cmp = nvme_tls_psk_match;
+ return 0;
+}
+
+static struct key_type nvme_tls_psk_key_type = {
+ .name = "psk",
+ .flags = KEY_TYPE_NET_DOMAIN,
+ .preparse = user_preparse,
+ .free_preparse = user_free_preparse,
+ .match_preparse = nvme_tls_psk_match_preparse,
+ .instantiate = generic_key_instantiate,
+ .revoke = user_revoke,
+ .destroy = user_destroy,
+ .describe = nvme_tls_psk_describe,
+ .read = user_read,
+};
+
+struct key *nvme_tls_psk_lookup(struct key *keyring,
+ const char *hostnqn, const char *subnqn,
+ int hmac, bool generated)
+{
+ char *identity;
+ size_t identity_len = (NVMF_NQN_SIZE) * 2 + 11;
+ key_ref_t keyref;
+ key_serial_t keyring_id;
+
+ identity = kzalloc(identity_len, GFP_KERNEL);
+ if (!identity)
+ return ERR_PTR(-ENOMEM);
+
+ snprintf(identity, identity_len, "NVMe0%c%02d %s %s",
+ generated ? 'G' : 'R', hmac, hostnqn, subnqn);
+
+ if (!keyring)
+ keyring = nvme_keyring;
+ keyring_id = key_serial(keyring);
+ pr_debug("keyring %x lookup tls psk '%s'\n",
+ keyring_id, identity);
+ keyref = keyring_search(make_key_ref(keyring, true),
+ &nvme_tls_psk_key_type,
+ identity, false);
+ if (IS_ERR(keyref)) {
+ pr_debug("lookup tls psk '%s' failed, error %ld\n",
+ identity, PTR_ERR(keyref));
+ kfree(identity);
+ return ERR_PTR(-ENOKEY);
+ }
+ kfree(identity);
+
+ return key_ref_to_ptr(keyref);
+}
+EXPORT_SYMBOL_GPL(nvme_tls_psk_lookup);
+
int nvme_keyring_init(void)
{
int err;
@@ -24,12 +116,18 @@ int nvme_keyring_init(void)
if (IS_ERR(nvme_keyring))
return PTR_ERR(nvme_keyring);
+ err = register_key_type(&nvme_tls_psk_key_type);
+ if (err) {
+ key_put(nvme_keyring);
+ return err;
+ }
return 0;
}
EXPORT_SYMBOL_GPL(nvme_keyring_init);
void nvme_keyring_exit(void)
{
+ unregister_key_type(&nvme_tls_psk_key_type);
key_revoke(nvme_keyring);
key_put(nvme_keyring);
}
diff --git a/include/linux/nvme-keyring.h b/include/linux/nvme-keyring.h
index a875c06cc922..5be60485ddfa 100644
--- a/include/linux/nvme-keyring.h
+++ b/include/linux/nvme-keyring.h
@@ -6,6 +6,12 @@
#ifndef _NVME_KEYRING_H
#define _NVME_KEYRING_H
+struct key *nvme_tls_psk_lookup(struct key *keyring,
+ const char *hostnqn, const char *subnqn,
+ int hmac, bool generated);
+
+key_serial_t nvme_keyring_id(void);
+
int nvme_keyring_init(void);
void nvme_keyring_exit(void);
--
2.35.3
next prev parent reply other threads:[~2023-03-29 13:59 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-29 13:59 [PATCHv2 00/18] nvme: In-kernel TLS support for TCP Hannes Reinecke
2023-03-29 13:59 ` [PATCH 01/18] nvme-keyring: register '.nvme' keyring and add CONFIG_NVME_TLS Hannes Reinecke
2023-03-29 14:49 ` Sagi Grimberg
2023-03-29 15:24 ` Hannes Reinecke
2023-03-29 15:04 ` Sagi Grimberg
2023-03-29 15:26 ` Hannes Reinecke
2023-03-30 8:53 ` Daniel Wagner
2023-03-30 14:38 ` Sagi Grimberg
2023-03-29 13:59 ` Hannes Reinecke [this message]
2023-03-29 13:59 ` [PATCH 03/18] nvme: add TCP TSAS definitions Hannes Reinecke
2023-03-29 13:59 ` [PATCH 04/18] nvme-tcp: add definitions for TLS cipher suites Hannes Reinecke
2023-03-29 13:59 ` [PATCH 05/18] net/tls: implement ->read_sock() Hannes Reinecke
2023-03-29 15:37 ` Sagi Grimberg
2023-03-29 15:41 ` Hannes Reinecke
2023-03-29 15:43 ` Sagi Grimberg
2023-03-29 15:44 ` Sagi Grimberg
2023-03-29 13:59 ` [PATCH 06/18] nvme/tcp: allocate socket file Hannes Reinecke
2023-03-29 15:57 ` Sagi Grimberg
2023-03-29 13:59 ` [PATCH 07/18] nvme-keyring: implement nvme_tls_psk_default() Hannes Reinecke
2023-03-29 15:35 ` Sagi Grimberg
2023-03-29 13:59 ` [PATCH 08/18] security/keys: export key_lookup() Hannes Reinecke
2023-03-29 13:59 ` [PATCH 09/18] nvme-tcp: enable TLS handshake upcall Hannes Reinecke
2023-03-30 12:54 ` Daniel Wagner
2023-03-30 12:59 ` Hannes Reinecke
2023-03-30 15:03 ` Sagi Grimberg
2023-03-30 17:16 ` Hannes Reinecke
2023-03-29 13:59 ` [PATCH 10/18] nvme-tcp: fixup send workflow for kTLS Hannes Reinecke
2023-03-30 15:24 ` Sagi Grimberg
2023-03-30 17:26 ` Hannes Reinecke
2023-03-31 5:49 ` Jakub Kicinski
2023-03-31 6:03 ` Hannes Reinecke
2023-04-03 12:20 ` Sagi Grimberg
2023-04-03 14:59 ` Jakub Kicinski
2023-04-03 15:51 ` Sagi Grimberg
2023-04-03 18:48 ` Jakub Kicinski
2023-04-03 22:36 ` Sagi Grimberg
2023-03-29 13:59 ` [PATCH 11/18] nvme-tcp: control message handling for recvmsg() Hannes Reinecke
2023-03-30 15:25 ` Sagi Grimberg
2023-03-29 13:59 ` [PATCH 12/18] nvme-fabrics: parse options 'keyring' and 'tls_key' Hannes Reinecke
2023-03-30 15:33 ` Sagi Grimberg
2023-03-30 17:34 ` Hannes Reinecke
2023-04-03 12:24 ` Sagi Grimberg
2023-04-03 12:36 ` Hannes Reinecke
2023-04-03 13:07 ` Sagi Grimberg
2023-04-03 14:11 ` Hannes Reinecke
2023-04-03 16:13 ` Sagi Grimberg
2023-03-29 13:59 ` [PATCH 13/18] nvmet: make TCP sectype settable via configfs Hannes Reinecke
2023-03-30 16:07 ` Sagi Grimberg
2023-03-30 17:37 ` Hannes Reinecke
2023-04-03 12:31 ` Sagi Grimberg
2023-04-03 12:43 ` Hannes Reinecke
2023-03-29 13:59 ` [PATCH 14/18] nvmet-tcp: allocate socket file Hannes Reinecke
2023-03-30 16:08 ` Sagi Grimberg
2023-03-30 17:37 ` Hannes Reinecke
2023-03-29 13:59 ` [PATCH 15/18] nvmet-tcp: enable TLS handshake upcall Hannes Reinecke
2023-04-03 12:51 ` Sagi Grimberg
2023-04-03 14:05 ` Hannes Reinecke
2023-03-29 13:59 ` [PATCH 16/18] nvmet-tcp: rework sendpage for kTLS Hannes Reinecke
2023-04-03 12:52 ` Sagi Grimberg
2023-03-29 13:59 ` [PATCH 17/18] nvmet-tcp: control messages for recvmsg() Hannes Reinecke
2023-04-03 12:59 ` Sagi Grimberg
2023-03-29 13:59 ` [PATCH 18/18] nvmet-tcp: add configfs attribute 'param_keyring' Hannes Reinecke
2023-04-03 13:03 ` Sagi Grimberg
2023-04-03 14:13 ` Hannes Reinecke
2023-04-03 15:53 ` Sagi Grimberg
2023-04-14 10:30 ` Hannes Reinecke
2023-04-17 13:50 ` Sagi Grimberg
2023-04-17 14:01 ` Hannes Reinecke
2023-04-17 15:12 ` Sagi Grimberg
-- strict thread matches above, loose matches on Subject: below --
2023-04-17 13:02 [PATCHv3 00/18] nvme: In-kernel TLS support for TCP Hannes Reinecke
2023-04-17 13:02 ` [PATCH 02/18] nvme-keyring: define a 'psk' keytype Hannes Reinecke
2023-03-21 12:43 [RFC PATCH 00/18] nvme: In-kernel TLS support for TCP Hannes Reinecke
2023-03-21 12:43 ` [PATCH 02/18] nvme-keyring: define a 'psk' keytype Hannes Reinecke
2023-03-22 8:29 ` Sagi Grimberg
2023-03-22 8:38 ` Hannes Reinecke
2023-03-22 8:49 ` Sagi Grimberg
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