Replace sessions list in connection with xarray.
Signed-off-by: Namjae Jeon <linkinjeon@xxxxxxxxxx>
---
fs/ksmbd/connection.c | 3 ++-
fs/ksmbd/connection.h | 2 +-
fs/ksmbd/mgmt/user_session.c | 31 +++++++------------------------
fs/ksmbd/mgmt/user_session.h | 5 ++---
fs/ksmbd/smb2pdu.c | 13 +++++++++----
5 files changed, 21 insertions(+), 33 deletions(-)
diff --git a/fs/ksmbd/connection.c b/fs/ksmbd/connection.c
index e8f476c5f189..ce23cc89046e 100644
--- a/fs/ksmbd/connection.c
+++ b/fs/ksmbd/connection.c
@@ -36,6 +36,7 @@ void ksmbd_conn_free(struct ksmbd_conn *conn)
list_del(&conn->conns_list);
write_unlock(&conn_list_lock);
+ xa_destroy(&conn->sessions);
kvfree(conn->request_buf);
kfree(conn->preauth_info);
kfree(conn);
@@ -66,12 +67,12 @@ struct ksmbd_conn *ksmbd_conn_alloc(void)
init_waitqueue_head(&conn->req_running_q);
INIT_LIST_HEAD(&conn->conns_list);
- INIT_LIST_HEAD(&conn->sessions);
INIT_LIST_HEAD(&conn->requests);
INIT_LIST_HEAD(&conn->async_requests);
spin_lock_init(&conn->request_lock);
spin_lock_init(&conn->credits_lock);
ida_init(&conn->async_ida);
+ xa_init(&conn->sessions);
spin_lock_init(&conn->llist_lock);
INIT_LIST_HEAD(&conn->lock_list);
diff --git a/fs/ksmbd/connection.h b/fs/ksmbd/connection.h
index 98c1cbe45ec9..5b39f0bdeff8 100644
--- a/fs/ksmbd/connection.h
+++ b/fs/ksmbd/connection.h
@@ -55,7 +55,7 @@ struct ksmbd_conn {
struct nls_table *local_nls;
struct list_head conns_list;
/* smb session 1 per user */
- struct list_head sessions;
+ struct xarray sessions;
unsigned long last_active;
/* How many request are running currently */
atomic_t req_running;
diff --git a/fs/ksmbd/mgmt/user_session.c b/fs/ksmbd/mgmt/user_session.c
index 8d8ffd8c6f19..3a44e66456fc 100644
--- a/fs/ksmbd/mgmt/user_session.c
+++ b/fs/ksmbd/mgmt/user_session.c
@@ -152,8 +152,6 @@ void ksmbd_session_destroy(struct ksmbd_session *sess)
if (!atomic_dec_and_test(&sess->refcnt))
return;
- list_del(&sess->sessions_entry);
-
down_write(&sessions_table_lock);
hash_del(&sess->hlist);
up_write(&sessions_table_lock);
@@ -181,42 +179,28 @@ static struct ksmbd_session *__session_lookup(unsigned long long id)
return NULL;
}
-void ksmbd_session_register(struct ksmbd_conn *conn,
- struct ksmbd_session *sess)
+int ksmbd_session_register(struct ksmbd_conn *conn,
+ struct ksmbd_session *sess)
{
sess->conn = conn;
- list_add(&sess->sessions_entry, &conn->sessions);
+ return xa_err(xa_store(&conn->sessions, sess->id, sess, GFP_KERNEL));
}
void ksmbd_sessions_deregister(struct ksmbd_conn *conn)
{
struct ksmbd_session *sess;
+ unsigned long id;
- while (!list_empty(&conn->sessions)) {
- sess = list_entry(conn->sessions.next,
- struct ksmbd_session,
- sessions_entry);
-
+ xa_for_each(&conn->sessions, id, sess) {
+ xa_erase(&conn->sessions, sess->id);
ksmbd_session_destroy(sess);
}
}
-static bool ksmbd_session_id_match(struct ksmbd_session *sess,
- unsigned long long id)
-{
- return sess->id == id;
-}
-
struct ksmbd_session *ksmbd_session_lookup(struct ksmbd_conn *conn,
unsigned long long id)
{
- struct ksmbd_session *sess = NULL;
-
- list_for_each_entry(sess, &conn->sessions, sessions_entry) {
- if (ksmbd_session_id_match(sess, id))
- return sess;
- }
- return NULL;
+ return xa_load(&conn->sessions, id);
}
int get_session(struct ksmbd_session *sess)
@@ -314,7 +298,6 @@ static struct ksmbd_session *__session_create(int protocol)
goto error;
set_session_flag(sess, protocol);
- INIT_LIST_HEAD(&sess->sessions_entry);
xa_init(&sess->tree_conns);
INIT_LIST_HEAD(&sess->ksmbd_chann_list);
INIT_LIST_HEAD(&sess->rpc_handle_list);
diff --git a/fs/ksmbd/mgmt/user_session.h b/fs/ksmbd/mgmt/user_session.h
index e241f16a3851..8b08189be3fc 100644
--- a/fs/ksmbd/mgmt/user_session.h
+++ b/fs/ksmbd/mgmt/user_session.h
@@ -57,7 +57,6 @@ struct ksmbd_session {
__u8 smb3decryptionkey[SMB3_ENC_DEC_KEY_SIZE];
__u8 smb3signingkey[SMB3_SIGN_KEY_SIZE];
- struct list_head sessions_entry;
struct ksmbd_file_table file_table;
atomic_t refcnt;
};
@@ -84,8 +83,8 @@ void ksmbd_session_destroy(struct ksmbd_session *sess);
struct ksmbd_session *ksmbd_session_lookup_slowpath(unsigned long long id);
struct ksmbd_session *ksmbd_session_lookup(struct ksmbd_conn *conn,
unsigned long long id);
-void ksmbd_session_register(struct ksmbd_conn *conn,
- struct ksmbd_session *sess);
+int ksmbd_session_register(struct ksmbd_conn *conn,
+ struct ksmbd_session *sess);
void ksmbd_sessions_deregister(struct ksmbd_conn *conn);
struct ksmbd_session *ksmbd_session_lookup_all(struct ksmbd_conn *conn,
unsigned long long id);
diff --git a/fs/ksmbd/smb2pdu.c b/fs/ksmbd/smb2pdu.c
index 94ab1dcd80e7..04d20a2e6dee 100644
--- a/fs/ksmbd/smb2pdu.c
+++ b/fs/ksmbd/smb2pdu.c
@@ -588,7 +588,8 @@ int smb2_check_user_session(struct ksmbd_work *work)
return -EINVAL;
}
-static void destroy_previous_session(struct ksmbd_user *user, u64 id)
+static void destroy_previous_session(struct ksmbd_conn *conn,
+ struct ksmbd_user *user, u64 id)
{
struct ksmbd_session *prev_sess = ksmbd_session_lookup_slowpath(id);
struct ksmbd_user *prev_user;
@@ -607,6 +608,7 @@ static void destroy_previous_session(struct ksmbd_user *user, u64 id)
}
put_session(prev_sess);
+ xa_erase(&conn->sessions, prev_sess->id);
ksmbd_session_destroy(prev_sess);
}
@@ -1439,7 +1441,7 @@ static int ntlm_authenticate(struct ksmbd_work *work)
/* Check for previous session */
prev_id = le64_to_cpu(req->PreviousSessionId);
if (prev_id && prev_id != sess->id)
- destroy_previous_session(user, prev_id);
+ destroy_previous_session(conn, user, prev_id);
if (sess->state == SMB2_SESSION_VALID) {
/*
@@ -1561,7 +1563,7 @@ static int krb5_authenticate(struct ksmbd_work *work)
/* Check previous session */
prev_sess_id = le64_to_cpu(req->PreviousSessionId);
if (prev_sess_id && prev_sess_id != sess->id)
- destroy_previous_session(sess->user, prev_sess_id);
+ destroy_previous_session(conn, sess->user, prev_sess_id);
if (sess->state == SMB2_SESSION_VALID)
ksmbd_free_user(sess->user);
@@ -1650,7 +1652,9 @@ int smb2_sess_setup(struct ksmbd_work *work)
goto out_err;
}
rsp->hdr.SessionId = cpu_to_le64(sess->id);
- ksmbd_session_register(conn, sess);
+ rc = ksmbd_session_register(conn, sess);
+ if (rc)
+ goto out_err;
} else if (conn->dialect >= SMB30_PROT_ID &&
(server_conf.flags & KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL) &&
req->Flags & SMB2_SESSION_REQ_FLAG_BINDING) {
@@ -1828,6 +1832,7 @@ int smb2_sess_setup(struct ksmbd_work *work)
if (sess->user && sess->user->flags & KSMBD_USER_FLAG_DELAY_SESSION)
try_delay = true;
+ xa_erase(&conn->sessions, sess->id);
ksmbd_session_destroy(sess);
work->sess = NULL;
if (try_delay)
--
2.25.1
