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-rw-r--r--fs/ksmbd/connection.c22
-rw-r--r--fs/ksmbd/connection.h27
-rw-r--r--fs/ksmbd/ksmbd_netlink.h3
-rw-r--r--fs/ksmbd/misc.c10
-rw-r--r--fs/ksmbd/smb2misc.c2
-rw-r--r--fs/ksmbd/smb2pdu.c126
-rw-r--r--fs/ksmbd/smb_common.c4
-rw-r--r--fs/ksmbd/smbacl.c1
-rw-r--r--fs/ksmbd/transport_ipc.c3
-rw-r--r--fs/ksmbd/transport_rdma.c363
-rw-r--r--fs/ksmbd/transport_rdma.h8
11 files changed, 325 insertions, 244 deletions
diff --git a/fs/ksmbd/connection.c b/fs/ksmbd/connection.c
index 208d2cff7bd3..e8f476c5f189 100644
--- a/fs/ksmbd/connection.c
+++ b/fs/ksmbd/connection.c
@@ -62,7 +62,7 @@ struct ksmbd_conn *ksmbd_conn_alloc(void)
atomic_set(&conn->req_running, 0);
atomic_set(&conn->r_count, 0);
conn->total_credits = 1;
- conn->outstanding_credits = 1;
+ conn->outstanding_credits = 0;
init_waitqueue_head(&conn->req_running_q);
INIT_LIST_HEAD(&conn->conns_list);
@@ -205,31 +205,31 @@ int ksmbd_conn_write(struct ksmbd_work *work)
return 0;
}
-int ksmbd_conn_rdma_read(struct ksmbd_conn *conn, void *buf,
- unsigned int buflen, u32 remote_key, u64 remote_offset,
- u32 remote_len)
+int ksmbd_conn_rdma_read(struct ksmbd_conn *conn,
+ void *buf, unsigned int buflen,
+ struct smb2_buffer_desc_v1 *desc,
+ unsigned int desc_len)
{
int ret = -EINVAL;
if (conn->transport->ops->rdma_read)
ret = conn->transport->ops->rdma_read(conn->transport,
buf, buflen,
- remote_key, remote_offset,
- remote_len);
+ desc, desc_len);
return ret;
}
-int ksmbd_conn_rdma_write(struct ksmbd_conn *conn, void *buf,
- unsigned int buflen, u32 remote_key,
- u64 remote_offset, u32 remote_len)
+int ksmbd_conn_rdma_write(struct ksmbd_conn *conn,
+ void *buf, unsigned int buflen,
+ struct smb2_buffer_desc_v1 *desc,
+ unsigned int desc_len)
{
int ret = -EINVAL;
if (conn->transport->ops->rdma_write)
ret = conn->transport->ops->rdma_write(conn->transport,
buf, buflen,
- remote_key, remote_offset,
- remote_len);
+ desc, desc_len);
return ret;
}
diff --git a/fs/ksmbd/connection.h b/fs/ksmbd/connection.h
index 7a59aacb5daa..98c1cbe45ec9 100644
--- a/fs/ksmbd/connection.h
+++ b/fs/ksmbd/connection.h
@@ -122,11 +122,14 @@ struct ksmbd_transport_ops {
int (*writev)(struct ksmbd_transport *t, struct kvec *iovs, int niov,
int size, bool need_invalidate_rkey,
unsigned int remote_key);
- int (*rdma_read)(struct ksmbd_transport *t, void *buf, unsigned int len,
- u32 remote_key, u64 remote_offset, u32 remote_len);
- int (*rdma_write)(struct ksmbd_transport *t, void *buf,
- unsigned int len, u32 remote_key, u64 remote_offset,
- u32 remote_len);
+ int (*rdma_read)(struct ksmbd_transport *t,
+ void *buf, unsigned int len,
+ struct smb2_buffer_desc_v1 *desc,
+ unsigned int desc_len);
+ int (*rdma_write)(struct ksmbd_transport *t,
+ void *buf, unsigned int len,
+ struct smb2_buffer_desc_v1 *desc,
+ unsigned int desc_len);
};
struct ksmbd_transport {
@@ -148,12 +151,14 @@ struct ksmbd_conn *ksmbd_conn_alloc(void);
void ksmbd_conn_free(struct ksmbd_conn *conn);
bool ksmbd_conn_lookup_dialect(struct ksmbd_conn *c);
int ksmbd_conn_write(struct ksmbd_work *work);
-int ksmbd_conn_rdma_read(struct ksmbd_conn *conn, void *buf,
- unsigned int buflen, u32 remote_key, u64 remote_offset,
- u32 remote_len);
-int ksmbd_conn_rdma_write(struct ksmbd_conn *conn, void *buf,
- unsigned int buflen, u32 remote_key, u64 remote_offset,
- u32 remote_len);
+int ksmbd_conn_rdma_read(struct ksmbd_conn *conn,
+ void *buf, unsigned int buflen,
+ struct smb2_buffer_desc_v1 *desc,
+ unsigned int desc_len);
+int ksmbd_conn_rdma_write(struct ksmbd_conn *conn,
+ void *buf, unsigned int buflen,
+ struct smb2_buffer_desc_v1 *desc,
+ unsigned int desc_len);
void ksmbd_conn_enqueue_request(struct ksmbd_work *work);
int ksmbd_conn_try_dequeue_request(struct ksmbd_work *work);
void ksmbd_conn_init_server_callbacks(struct ksmbd_conn_ops *ops);
diff --git a/fs/ksmbd/ksmbd_netlink.h b/fs/ksmbd/ksmbd_netlink.h
index ebe6ca08467a..52aa0adeb951 100644
--- a/fs/ksmbd/ksmbd_netlink.h
+++ b/fs/ksmbd/ksmbd_netlink.h
@@ -104,7 +104,8 @@ struct ksmbd_startup_request {
*/
__u32 sub_auth[3]; /* Subauth value for Security ID */
__u32 smb2_max_credits; /* MAX credits */
- __u32 reserved[128]; /* Reserved room */
+ __u32 smbd_max_io_size; /* smbd read write size */
+ __u32 reserved[127]; /* Reserved room */
__u32 ifc_list_sz; /* interfaces list size */
__s8 ____payload[];
};
diff --git a/fs/ksmbd/misc.c b/fs/ksmbd/misc.c
index 1e2076a53bed..df991107ad2c 100644
--- a/fs/ksmbd/misc.c
+++ b/fs/ksmbd/misc.c
@@ -20,7 +20,7 @@
* wildcard '*' and '?'
* TODO : implement consideration about DOS_DOT, DOS_QM and DOS_STAR
*
- * @string: string to compare with a pattern
+ * @str: string to compare with a pattern
* @len: string length
* @pattern: pattern string which might include wildcard '*' and '?'
*
@@ -152,8 +152,8 @@ out:
/**
* convert_to_nt_pathname() - extract and return windows path string
* whose share directory prefix was removed from file path
- * @filename : unix filename
- * @sharepath: share path string
+ * @share: ksmbd_share_config pointer
+ * @path: path to report
*
* Return : windows path string or error
*/
@@ -250,8 +250,8 @@ char *ksmbd_extract_sharename(char *treename)
/**
* convert_to_unix_name() - convert windows name to unix format
- * @path: name to be converted
- * @tid: tree id of mathing share
+ * @share: ksmbd_share_config pointer
+ * @name: file name that is relative to share
*
* Return: converted name on success, otherwise NULL
*/
diff --git a/fs/ksmbd/smb2misc.c b/fs/ksmbd/smb2misc.c
index 4a9460153b59..f8f456377a51 100644
--- a/fs/ksmbd/smb2misc.c
+++ b/fs/ksmbd/smb2misc.c
@@ -338,7 +338,7 @@ static int smb2_validate_credit_charge(struct ksmbd_conn *conn,
ret = 1;
}
- if ((u64)conn->outstanding_credits + credit_charge > conn->vals->max_credits) {
+ if ((u64)conn->outstanding_credits + credit_charge > conn->total_credits) {
ksmbd_debug(SMB, "Limits exceeding the maximum allowable outstanding requests, given : %u, pending : %u\n",
credit_charge, conn->outstanding_credits);
ret = 1;
diff --git a/fs/ksmbd/smb2pdu.c b/fs/ksmbd/smb2pdu.c
index 16c803a9d996..e6f4ccc12f49 100644
--- a/fs/ksmbd/smb2pdu.c
+++ b/fs/ksmbd/smb2pdu.c
@@ -3938,6 +3938,12 @@ int smb2_query_dir(struct ksmbd_work *work)
set_ctx_actor(&dir_fp->readdir_data.ctx, __query_dir);
rc = iterate_dir(dir_fp->filp, &dir_fp->readdir_data.ctx);
+ /*
+ * req->OutputBufferLength is too small to contain even one entry.
+ * In this case, it immediately returns OutputBufferLength 0 to client.
+ */
+ if (!d_info.out_buf_len && !d_info.num_entry)
+ goto no_buf_len;
if (rc == 0)
restart_ctx(&dir_fp->readdir_data.ctx);
if (rc == -ENOSPC)
@@ -3964,10 +3970,12 @@ int smb2_query_dir(struct ksmbd_work *work)
rsp->Buffer[0] = 0;
inc_rfc1001_len(work->response_buf, 9);
} else {
+no_buf_len:
((struct file_directory_info *)
((char *)rsp->Buffer + d_info.last_entry_offset))
->NextEntryOffset = 0;
- d_info.data_count -= d_info.last_entry_off_align;
+ if (d_info.data_count >= d_info.last_entry_off_align)
+ d_info.data_count -= d_info.last_entry_off_align;
rsp->StructureSize = cpu_to_le16(9);
rsp->OutputBufferOffset = cpu_to_le16(72);
@@ -6116,7 +6124,6 @@ out:
static int smb2_set_remote_key_for_rdma(struct ksmbd_work *work,
struct smb2_buffer_desc_v1 *desc,
__le32 Channel,
- __le16 ChannelInfoOffset,
__le16 ChannelInfoLength)
{
unsigned int i, ch_count;
@@ -6134,15 +6141,13 @@ static int smb2_set_remote_key_for_rdma(struct ksmbd_work *work,
le32_to_cpu(desc[i].length));
}
}
- if (ch_count != 1) {
- ksmbd_debug(RDMA, "RDMA multiple buffer descriptors %d are not supported yet\n",
- ch_count);
+ if (!ch_count)
return -EINVAL;
- }
work->need_invalidate_rkey =
(Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE);
- work->remote_key = le32_to_cpu(desc->token);
+ if (Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE)
+ work->remote_key = le32_to_cpu(desc->token);
return 0;
}
@@ -6150,14 +6155,12 @@ static ssize_t smb2_read_rdma_channel(struct ksmbd_work *work,
struct smb2_read_req *req, void *data_buf,
size_t length)
{
- struct smb2_buffer_desc_v1 *desc =
- (struct smb2_buffer_desc_v1 *)&req->Buffer[0];
int err;
err = ksmbd_conn_rdma_write(work->conn, data_buf, length,
- le32_to_cpu(desc->token),
- le64_to_cpu(desc->offset),
- le32_to_cpu(desc->length));
+ (struct smb2_buffer_desc_v1 *)
+ ((char *)req + le16_to_cpu(req->ReadChannelInfoOffset)),
+ le16_to_cpu(req->ReadChannelInfoLength));
if (err)
return err;
@@ -6180,6 +6183,8 @@ int smb2_read(struct ksmbd_work *work)
size_t length, mincount;
ssize_t nbytes = 0, remain_bytes = 0;
int err = 0;
+ bool is_rdma_channel = false;
+ unsigned int max_read_size = conn->vals->max_read_size;
WORK_BUFFERS(work, req, rsp);
@@ -6191,6 +6196,11 @@ int smb2_read(struct ksmbd_work *work)
if (req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE ||
req->Channel == SMB2_CHANNEL_RDMA_V1) {
+ is_rdma_channel = true;
+ max_read_size = get_smbd_max_read_write_size();
+ }
+
+ if (is_rdma_channel == true) {
unsigned int ch_offset = le16_to_cpu(req->ReadChannelInfoOffset);
if (ch_offset < offsetof(struct smb2_read_req, Buffer)) {
@@ -6201,7 +6211,6 @@ int smb2_read(struct ksmbd_work *work)
(struct smb2_buffer_desc_v1 *)
((char *)req + ch_offset),
req->Channel,
- req->ReadChannelInfoOffset,
req->ReadChannelInfoLength);
if (err)
goto out;
@@ -6223,9 +6232,9 @@ int smb2_read(struct ksmbd_work *work)
length = le32_to_cpu(req->Length);
mincount = le32_to_cpu(req->MinimumCount);
- if (length > conn->vals->max_read_size) {
+ if (length > max_read_size) {
ksmbd_debug(SMB, "limiting read size to max size(%u)\n",
- conn->vals->max_read_size);
+ max_read_size);
err = -EINVAL;
goto out;
}
@@ -6257,8 +6266,7 @@ int smb2_read(struct ksmbd_work *work)
ksmbd_debug(SMB, "nbytes %zu, offset %lld mincount %zu\n",
nbytes, offset, mincount);
- if (req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE ||
- req->Channel == SMB2_CHANNEL_RDMA_V1) {
+ if (is_rdma_channel == true) {
/* write data to the client using rdma channel */
remain_bytes = smb2_read_rdma_channel(work, req,
work->aux_payload_buf,
@@ -6328,23 +6336,18 @@ static noinline int smb2_write_pipe(struct ksmbd_work *work)
length = le32_to_cpu(req->Length);
id = req->VolatileFileId;
- if (le16_to_cpu(req->DataOffset) ==
- offsetof(struct smb2_write_req, Buffer)) {
- data_buf = (char *)&req->Buffer[0];
- } else {
- if ((u64)le16_to_cpu(req->DataOffset) + length >
- get_rfc1002_len(work->request_buf)) {
- pr_err("invalid write data offset %u, smb_len %u\n",
- le16_to_cpu(req->DataOffset),
- get_rfc1002_len(work->request_buf));
- err = -EINVAL;
- goto out;
- }
-
- data_buf = (char *)(((char *)&req->hdr.ProtocolId) +
- le16_to_cpu(req->DataOffset));
+ if ((u64)le16_to_cpu(req->DataOffset) + length >
+ get_rfc1002_len(work->request_buf)) {
+ pr_err("invalid write data offset %u, smb_len %u\n",
+ le16_to_cpu(req->DataOffset),
+ get_rfc1002_len(work->request_buf));
+ err = -EINVAL;
+ goto out;
}
+ data_buf = (char *)(((char *)&req->hdr.ProtocolId) +
+ le16_to_cpu(req->DataOffset));
+
rpc_resp = ksmbd_rpc_write(work->sess, id, data_buf, length);
if (rpc_resp) {
if (rpc_resp->flags == KSMBD_RPC_ENOTIMPLEMENTED) {
@@ -6384,21 +6387,18 @@ static ssize_t smb2_write_rdma_channel(struct ksmbd_work *work,
struct ksmbd_file *fp,
loff_t offset, size_t length, bool sync)
{
- struct smb2_buffer_desc_v1 *desc;
char *data_buf;
int ret;
ssize_t nbytes;
- desc = (struct smb2_buffer_desc_v1 *)&req->Buffer[0];
-
data_buf = kvmalloc(length, GFP_KERNEL | __GFP_ZERO);
if (!data_buf)
return -ENOMEM;
ret = ksmbd_conn_rdma_read(work->conn, data_buf, length,
- le32_to_cpu(desc->token),
- le64_to_cpu(desc->offset),
- le32_to_cpu(desc->length));
+ (struct smb2_buffer_desc_v1 *)
+ ((char *)req + le16_to_cpu(req->WriteChannelInfoOffset)),
+ le16_to_cpu(req->WriteChannelInfoLength));
if (ret < 0) {
kvfree(data_buf);
return ret;
@@ -6427,8 +6427,9 @@ int smb2_write(struct ksmbd_work *work)
size_t length;
ssize_t nbytes;
char *data_buf;
- bool writethrough = false;
+ bool writethrough = false, is_rdma_channel = false;
int err = 0;
+ unsigned int max_write_size = work->conn->vals->max_write_size;
WORK_BUFFERS(work, req, rsp);
@@ -6437,8 +6438,17 @@ int smb2_write(struct ksmbd_work *work)
return smb2_write_pipe(work);
}
+ offset = le64_to_cpu(req->Offset);
+ length = le32_to_cpu(req->Length);
+
if (req->Channel == SMB2_CHANNEL_RDMA_V1 ||
req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE) {
+ is_rdma_channel = true;
+ max_write_size = get_smbd_max_read_write_size();
+ length = le32_to_cpu(req->RemainingBytes);
+ }
+
+ if (is_rdma_channel == true) {
unsigned int ch_offset = le16_to_cpu(req->WriteChannelInfoOffset);
if (req->Length != 0 || req->DataOffset != 0 ||
@@ -6450,7 +6460,6 @@ int smb2_write(struct ksmbd_work *work)
(struct smb2_buffer_desc_v1 *)
((char *)req + ch_offset),
req->Channel,
- req->WriteChannelInfoOffset,
req->WriteChannelInfoLength);
if (err)
goto out;
@@ -6474,12 +6483,9 @@ int smb2_write(struct ksmbd_work *work)
goto out;
}
- offset = le64_to_cpu(req->Offset);
- length = le32_to_cpu(req->Length);
-
- if (length > work->conn->vals->max_write_size) {
+ if (length > max_write_size) {
ksmbd_debug(SMB, "limiting write size to max size(%u)\n",
- work->conn->vals->max_write_size);
+ max_write_size);
err = -EINVAL;
goto out;
}
@@ -6487,24 +6493,17 @@ int smb2_write(struct ksmbd_work *work)
if (le32_to_cpu(req->Flags) & SMB2_WRITEFLAG_WRITE_THROUGH)
writethrough = true;
- if (req->Channel != SMB2_CHANNEL_RDMA_V1 &&
- req->Channel != SMB2_CHANNEL_RDMA_V1_INVALIDATE) {
- if (le16_to_cpu(req->DataOffset) ==
- offsetof(struct smb2_write_req, Buffer)) {
- data_buf = (char *)&req->Buffer[0];
- } else {
- if ((u64)le16_to_cpu(req->DataOffset) + length >
- get_rfc1002_len(work->request_buf)) {
- pr_err("invalid write data offset %u, smb_len %u\n",
- le16_to_cpu(req->DataOffset),
- get_rfc1002_len(work->request_buf));
- err = -EINVAL;
- goto out;
- }
-
- data_buf = (char *)(((char *)&req->hdr.ProtocolId) +
- le16_to_cpu(req->DataOffset));
+ if (is_rdma_channel == false) {
+ if ((u64)le16_to_cpu(req->DataOffset) + length >
+ get_rfc1002_len(work->request_buf)) {
+ pr_err("invalid write data offset %u, smb_len %u\n",
+ le16_to_cpu(req->DataOffset),
+ get_rfc1002_len(work->request_buf));
+ err = -EINVAL;
+ goto out;
}
+ data_buf = (char *)(((char *)&req->hdr.ProtocolId) +
+ le16_to_cpu(req->DataOffset));
ksmbd_debug(SMB, "flags %u\n", le32_to_cpu(req->Flags));
if (le32_to_cpu(req->Flags) & SMB2_WRITEFLAG_WRITE_THROUGH)
@@ -6520,8 +6519,7 @@ int smb2_write(struct ksmbd_work *work)
/* read data from the client using rdma channel, and
* write the data.
*/
- nbytes = smb2_write_rdma_channel(work, req, fp, offset,
- le32_to_cpu(req->RemainingBytes),
+ nbytes = smb2_write_rdma_channel(work, req, fp, offset, length,
writethrough);
if (nbytes < 0) {
err = (int)nbytes;
diff --git a/fs/ksmbd/smb_common.c b/fs/ksmbd/smb_common.c
index 9a7e211dbf4f..7f8ab14fb8ec 100644
--- a/fs/ksmbd/smb_common.c
+++ b/fs/ksmbd/smb_common.c
@@ -140,8 +140,10 @@ int ksmbd_verify_smb_message(struct ksmbd_work *work)
hdr = work->request_buf;
if (*(__le32 *)hdr->Protocol == SMB1_PROTO_NUMBER &&
- hdr->Command == SMB_COM_NEGOTIATE)
+ hdr->Command == SMB_COM_NEGOTIATE) {
+ work->conn->outstanding_credits++;
return 0;
+ }
return -EINVAL;
}
diff --git a/fs/ksmbd/smbacl.c b/fs/ksmbd/smbacl.c
index 6ecf55ea1fed..38f23bf981ac 100644
--- a/fs/ksmbd/smbacl.c
+++ b/fs/ksmbd/smbacl.c
@@ -1261,6 +1261,7 @@ int smb_check_perm_dacl(struct ksmbd_conn *conn, struct path *path,
if (!access_bits)
access_bits =
SET_MINIMUM_RIGHTS;
+ posix_acl_release(posix_acls);
goto check_access_bits;
}
}
diff --git a/fs/ksmbd/transport_ipc.c b/fs/ksmbd/transport_ipc.c
index 3ad6881e0f7e..7cb0eeb07c80 100644
--- a/fs/ksmbd/transport_ipc.c
+++ b/fs/ksmbd/transport_ipc.c
@@ -26,6 +26,7 @@
#include "mgmt/ksmbd_ida.h"
#include "connection.h"
#include "transport_tcp.h"
+#include "transport_rdma.h"
#define IPC_WAIT_TIMEOUT (2 * HZ)
@@ -303,6 +304,8 @@ static int ipc_server_config_on_startup(struct ksmbd_startup_request *req)
init_smb2_max_trans_size(req->smb2_max_trans);
if (req->smb2_max_credits)
init_smb2_max_credits(req->smb2_max_credits);
+ if (req->smbd_max_io_size)
+ init_smbd_max_io_size(req->smbd_max_io_size);
ret = ksmbd_set_netbios_name(req->netbios_name);
ret |= ksmbd_set_server_string(req->server_string);
diff --git a/fs/ksmbd/transport_rdma.c b/fs/ksmbd/transport_rdma.c
index e646d79554b8..d035e060c2f0 100644
--- a/fs/ksmbd/transport_rdma.c
+++ b/fs/ksmbd/transport_rdma.c
@@ -80,9 +80,7 @@ static int smb_direct_max_fragmented_recv_size = 1024 * 1024;
/* The maximum single-message size which can be received */
static int smb_direct_max_receive_size = 8192;
-static int smb_direct_max_read_write_size = 524224;
-
-static int smb_direct_max_outstanding_rw_ops = 8;
+static int smb_direct_max_read_write_size = SMBD_DEFAULT_IOSIZE;
static LIST_HEAD(smb_direct_device_list);
static DEFINE_RWLOCK(smb_direct_device_lock);
@@ -147,18 +145,18 @@ struct smb_direct_transport {
atomic_t send_credits;
spinlock_t lock_new_recv_credits;
int new_recv_credits;
- atomic_t rw_avail_ops;
+ int max_rw_credits;
+ int pages_per_rw_credit;
+ atomic_t rw_credits;
wait_queue_head_t wait_send_credits;
- wait_queue_head_t wait_rw_avail_ops;
+ wait_queue_head_t wait_rw_credits;
mempool_t *sendmsg_mempool;
struct kmem_cache *sendmsg_cache;
mempool_t *recvmsg_mempool;
struct kmem_cache *recvmsg_cache;
- wait_queue_head_t wait_send_payload_pending;
- atomic_t send_payload_pending;
wait_queue_head_t wait_send_pending;
atomic_t send_pending;
@@ -208,12 +206,25 @@ struct smb_direct_recvmsg {
struct smb_direct_rdma_rw_msg {
struct smb_direct_transport *t;
struct ib_cqe cqe;
+ int status;
struct completion *completion;
+ struct list_head list;
struct rdma_rw_ctx rw_ctx;
struct sg_table sgt;
struct scatterlist sg_list[];
};
+void init_smbd_max_io_size(unsigned int sz)
+{
+ sz = clamp_val(sz, SMBD_MIN_IOSIZE, SMBD_MAX_IOSIZE);
+ smb_direct_max_read_write_size = sz;
+}
+
+unsigned int get_smbd_max_read_write_size(void)
+{
+ return smb_direct_max_read_write_size;
+}
+
static inline int get_buf_page_count(void *buf, int size)
{
return DIV_ROUND_UP((uintptr_t)buf + size, PAGE_SIZE) -
@@ -377,7 +388,7 @@ static struct smb_direct_transport *alloc_transport(struct rdma_cm_id *cm_id)
t->reassembly_queue_length = 0;
init_waitqueue_head(&t->wait_reassembly_queue);
init_waitqueue_head(&t->wait_send_credits);
- init_waitqueue_head(&t->wait_rw_avail_ops);
+ init_waitqueue_head(&t->wait_rw_credits);
spin_lock_init(&t->receive_credit_lock);
spin_lock_init(&t->recvmsg_queue_lock);
@@ -386,8 +397,6 @@ static struct smb_direct_transport *alloc_transport(struct rdma_cm_id *cm_id)
spin_lock_init(&t->empty_recvmsg_queue_lock);
INIT_LIST_HEAD(&t->empty_recvmsg_queue);
- init_waitqueue_head(&t->wait_send_payload_pending);
- atomic_set(&t->send_payload_pending, 0);
init_waitqueue_head(&t->wait_send_pending);
atomic_set(&t->send_pending, 0);
@@ -417,8 +426,6 @@ static void free_transport(struct smb_direct_transport *t)
wake_up_interruptible(&t->wait_send_credits);
ksmbd_debug(RDMA, "wait for all send posted to IB to finish\n");
- wait_event(t->wait_send_payload_pending,
- atomic_read(&t->send_payload_pending) == 0);
wait_event(t->wait_send_pending,
atomic_read(&t->send_pending) == 0);
@@ -569,6 +576,7 @@ static void recv_done(struct ib_cq *cq, struct ib_wc *wc)
}
t->negotiation_requested = true;
t->full_packet_received = true;
+ t->status = SMB_DIRECT_CS_CONNECTED;
enqueue_reassembly(t, recvmsg, 0);
wake_up_interruptible(&t->wait_status);
break;
@@ -873,13 +881,8 @@ static void send_done(struct ib_cq *cq, struct ib_wc *wc)
smb_direct_disconnect_rdma_connection(t);
}
- if (sendmsg->num_sge > 1) {
- if (atomic_dec_and_test(&t->send_payload_pending))
- wake_up(&t->wait_send_payload_pending);
- } else {
- if (atomic_dec_and_test(&t->send_pending))
- wake_up(&t->wait_send_pending);
- }
+ if (atomic_dec_and_test(&t->send_pending))
+ wake_up(&t->wait_send_pending);
/* iterate and free the list of messages in reverse. the list's head
* is invalid.
@@ -911,21 +914,12 @@ static int smb_direct_post_send(struct smb_direct_transport *t,
{
int ret;
- if (wr->num_sge > 1)
- atomic_inc(&t->send_payload_pending);
- else
- atomic_inc(&t->send_pending);
-
+ atomic_inc(&t->send_pending);
ret = ib_post_send(t->qp, wr, NULL);
if (ret) {
pr_err("failed to post send: %d\n", ret);
- if (wr->num_sge > 1) {
- if (atomic_dec_and_test(&t->send_payload_pending))
- wake_up(&t->wait_send_payload_pending);
- } else {
- if (atomic_dec_and_test(&t->send_pending))
- wake_up(&t->wait_send_pending);
- }
+ if (atomic_dec_and_test(&t->send_pending))
+ wake_up(&t->wait_send_pending);
smb_direct_disconnect_rdma_connection(t);
}
return ret;
@@ -983,18 +977,19 @@ static int smb_direct_flush_send_list(struct smb_direct_transport *t,
}
static int wait_for_credits(struct smb_direct_transport *t,
- wait_queue_head_t *waitq, atomic_t *credits)
+ wait_queue_head_t *waitq, atomic_t *total_credits,
+ int needed)
{
int ret;
do {
- if (atomic_dec_return(credits) >= 0)
+ if (atomic_sub_return(needed, total_credits) >= 0)
return 0;
- atomic_inc(credits);
+ atomic_add(needed, total_credits);
ret = wait_event_interruptible(*waitq,
- atomic_read(credits) > 0 ||
- t->status != SMB_DIRECT_CS_CONNECTED);
+ atomic_read(total_credits) >= needed ||
+ t->status != SMB_DIRECT_CS_CONNECTED);
if (t->status != SMB_DIRECT_CS_CONNECTED)
return -ENOTCONN;
@@ -1015,7 +1010,19 @@ static int wait_for_send_credits(struct smb_direct_transport *t,
return ret;
}
- return wait_for_credits(t, &t->wait_send_credits, &t->send_credits);
+ return wait_for_credits(t, &t->wait_send_credits, &t->send_credits, 1);
+}
+
+static int wait_for_rw_credits(struct smb_direct_transport *t, int credits)
+{
+ return wait_for_credits(t, &t->wait_rw_credits, &t->rw_credits, credits);
+}
+
+static int calc_rw_credits(struct smb_direct_transport *t,
+ char *buf, unsigned int len)
+{
+ return DIV_ROUND_UP(get_buf_page_count(buf, len),
+ t->pages_per_rw_credit);
}
static int smb_direct_create_header(struct smb_direct_transport *t,
@@ -1086,7 +1093,7 @@ static int get_sg_list(void *buf, int size, struct scatterlist *sg_list, int nen
int offset, len;
int i = 0;
- if (nentries < get_buf_page_count(buf, size))
+ if (size <= 0 || nentries < get_buf_page_count(buf, size))
return -EINVAL;
offset = offset_in_page(buf);
@@ -1118,7 +1125,7 @@ static int get_mapped_sg_list(struct ib_device *device, void *buf, int size,
int npages;
npages = get_sg_list(buf, size, sg_list, nentries);
- if (npages <= 0)
+ if (npages < 0)
return -EINVAL;
return ib_dma_map_sg(device, sg_list, npages, dir);
}
@@ -1313,11 +1320,21 @@ done:
* that means all the I/Os have been out and we are good to return
*/
- wait_event(st->wait_send_payload_pending,
- atomic_read(&st->send_payload_pending) == 0);
+ wait_event(st->wait_send_pending,
+ atomic_read(&st->send_pending) == 0);
return ret;
}
+static void smb_direct_free_rdma_rw_msg(struct smb_direct_transport *t,
+ struct smb_direct_rdma_rw_msg *msg,
+ enum dma_data_direction dir)
+{
+ rdma_rw_ctx_destroy(&msg->rw_ctx, t->qp, t->qp->port,
+ msg->sgt.sgl, msg->sgt.nents, dir);
+ sg_free_table_chained(&msg->sgt, SG_CHUNK_SIZE);
+ kfree(msg);
+}
+
static void read_write_done(struct ib_cq *cq, struct ib_wc *wc,
enum dma_data_direction dir)
{
@@ -1326,19 +1343,14 @@ static void read_write_done(struct ib_cq *cq, struct ib_wc *wc,
struct smb_direct_transport *t = msg->t;
if (wc->status != IB_WC_SUCCESS) {
+ msg->status = -EIO;
pr_err("read/write error. opcode = %d, status = %s(%d)\n",
wc->opcode, ib_wc_status_msg(wc->status), wc->status);
- smb_direct_disconnect_rdma_connection(t);
+ if (wc->status != IB_WC_WR_FLUSH_ERR)
+ smb_direct_disconnect_rdma_connection(t);
}
- if (atomic_inc_return(&t->rw_avail_ops) > 0)
- wake_up(&t->wait_rw_avail_ops);
-
- rdma_rw_ctx_destroy(&msg->rw_ctx, t->qp, t->qp->port,
- msg->sg_list, msg->sgt.nents, dir);
- sg_free_table_chained(&msg->sgt, SG_CHUNK_SIZE);
complete(msg->completion);
- kfree(msg);
}
static void read_done(struct ib_cq *cq, struct ib_wc *wc)
@@ -1351,94 +1363,141 @@ static void write_done(struct ib_cq *cq, struct ib_wc *wc)
read_write_done(cq, wc, DMA_TO_DEVICE);
}
-static int smb_direct_rdma_xmit(struct smb_direct_transport *t, void *buf,
- int buf_len, u32 remote_key, u64 remote_offset,
- u32 remote_len, bool is_read)
+static int smb_direct_rdma_xmit(struct smb_direct_transport *t,
+ void *buf, int buf_len,
+ struct smb2_buffer_desc_v1 *desc,
+ unsigned int desc_len,
+ bool is_read)
{
- struct smb_direct_rdma_rw_msg *msg;
- int ret;
+ struct smb_direct_rdma_rw_msg *msg, *next_msg;
+ int i, ret;
DECLARE_COMPLETION_ONSTACK(completion);
- struct ib_send_wr *first_wr = NULL;
+ struct ib_send_wr *first_wr;
+ LIST_HEAD(msg_list);
+ char *desc_buf;
+ int credits_needed;
+ unsigned int desc_buf_len;
+ size_t total_length = 0;
+
+ if (t->status != SMB_DIRECT_CS_CONNECTED)
+ return -ENOTCONN;
- ret = wait_for_credits(t, &t->wait_rw_avail_ops, &t->rw_avail_ops);
+ /* calculate needed credits */
+ credits_needed = 0;
+ desc_buf = buf;
+ for (i = 0; i < desc_len / sizeof(*desc); i++) {
+ desc_buf_len = le32_to_cpu(desc[i].length);
+
+ credits_needed += calc_rw_credits(t, desc_buf, desc_buf_len);
+ desc_buf += desc_buf_len;
+ total_length += desc_buf_len;
+ if (desc_buf_len == 0 || total_length > buf_len ||
+ total_length > t->max_rdma_rw_size)
+ return -EINVAL;
+ }
+
+ ksmbd_debug(RDMA, "RDMA %s, len %#x, needed credits %#x\n",
+ is_read ? "read" : "write", buf_len, credits_needed);
+
+ ret = wait_for_rw_credits(t, credits_needed);
if (ret < 0)
return ret;
- /* TODO: mempool */
- msg = kmalloc(offsetof(struct smb_direct_rdma_rw_msg, sg_list) +
- sizeof(struct scatterlist) * SG_CHUNK_SIZE, GFP_KERNEL);
- if (!msg) {
- atomic_inc(&t->rw_avail_ops);
- return -ENOMEM;
- }
+ /* build rdma_rw_ctx for each descriptor */
+ desc_buf = buf;
+ for (i = 0; i < desc_len / sizeof(*desc); i++) {
+ msg = kzalloc(offsetof(struct smb_direct_rdma_rw_msg, sg_list) +
+ sizeof(struct scatterlist) * SG_CHUNK_SIZE, GFP_KERNEL);
+ if (!msg) {
+ ret = -ENOMEM;
+ goto out;
+ }
- msg->sgt.sgl = &msg->sg_list[0];
- ret = sg_alloc_table_chained(&msg->sgt,
- get_buf_page_count(buf, buf_len),
- msg->sg_list, SG_CHUNK_SIZE);
- if (ret) {
- atomic_inc(&t->rw_avail_ops);
- kfree(msg);
- return -ENOMEM;
- }
+ desc_buf_len = le32_to_cpu(desc[i].length);
- ret = get_sg_list(buf, buf_len, msg->sgt.sgl, msg->sgt.orig_nents);
- if (ret <= 0) {
- pr_err("failed to get pages\n");
- goto err;
- }
+ msg->t = t;
+ msg->cqe.done = is_read ? read_done : write_done;
+ msg->completion = &completion;
- ret = rdma_rw_ctx_init(&msg->rw_ctx, t->qp, t->qp->port,
- msg->sg_list, get_buf_page_count(buf, buf_len),
- 0, remote_offset, remote_key,
- is_read ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
- if (ret < 0) {
- pr_err("failed to init rdma_rw_ctx: %d\n", ret);
- goto err;
+ msg->sgt.sgl = &msg->sg_list[0];
+ ret = sg_alloc_table_chained(&msg->sgt,
+ get_buf_page_count(desc_buf, desc_buf_len),
+ msg->sg_list, SG_CHUNK_SIZE);
+ if (ret) {
+ kfree(msg);
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ ret = get_sg_list(desc_buf, desc_buf_len,
+ msg->sgt.sgl, msg->sgt.orig_nents);
+ if (ret < 0) {
+ sg_free_table_chained(&msg->sgt, SG_CHUNK_SIZE);
+ kfree(msg);
+ goto out;
+ }
+
+ ret = rdma_rw_ctx_init(&msg->rw_ctx, t->qp, t->qp->port,
+ msg->sgt.sgl,
+ get_buf_page_count(desc_buf, desc_buf_len),
+ 0,
+ le64_to_cpu(desc[i].offset),
+ le32_to_cpu(desc[i].token),
+ is_read ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
+ if (ret < 0) {
+ pr_err("failed to init rdma_rw_ctx: %d\n", ret);
+ sg_free_table_chained(&msg->sgt, SG_CHUNK_SIZE);
+ kfree(msg);
+ goto out;
+ }
+
+ list_add_tail(&msg->list, &msg_list);
+ desc_buf += desc_buf_len;
}
- msg->t = t;
- msg->cqe.done = is_read ? read_done : write_done;
- msg->completion = &completion;
- first_wr = rdma_rw_ctx_wrs(&msg->rw_ctx, t->qp, t->qp->port,
- &msg->cqe, NULL);
+ /* concatenate work requests of rdma_rw_ctxs */
+ first_wr = NULL;
+ list_for_each_entry_reverse(msg, &msg_list, list) {
+ first_wr = rdma_rw_ctx_wrs(&msg->rw_ctx, t->qp, t->qp->port,
+ &msg->cqe, first_wr);
+ }
ret = ib_post_send(t->qp, first_wr, NULL);
if (ret) {
- pr_err("failed to post send wr: %d\n", ret);
- goto err;
+ pr_err("failed to post send wr for RDMA R/W: %d\n", ret);
+ goto out;
}
+ msg = list_last_entry(&msg_list, struct smb_direct_rdma_rw_msg, list);
wait_for_completion(&completion);
- return 0;
-
-err:
- atomic_inc(&t->rw_avail_ops);
- if (first_wr)
- rdma_rw_ctx_destroy(&msg->rw_ctx, t->qp, t->qp->port,
- msg->sg_list, msg->sgt.nents,
- is_read ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
- sg_free_table_chained(&msg->sgt, SG_CHUNK_SIZE);
- kfree(msg);
+ ret = msg->status;
+out:
+ list_for_each_entry_safe(msg, next_msg, &msg_list, list) {
+ list_del(&msg->list);
+ smb_direct_free_rdma_rw_msg(t, msg,
+ is_read ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
+ }
+ atomic_add(credits_needed, &t->rw_credits);
+ wake_up(&t->wait_rw_credits);
return ret;
}
-static int smb_direct_rdma_write(struct ksmbd_transport *t, void *buf,
- unsigned int buflen, u32 remote_key,
- u64 remote_offset, u32 remote_len)
+static int smb_direct_rdma_write(struct ksmbd_transport *t,
+ void *buf, unsigned int buflen,
+ struct smb2_buffer_desc_v1 *desc,
+ unsigned int desc_len)
{
return smb_direct_rdma_xmit(smb_trans_direct_transfort(t), buf, buflen,
- remote_key, remote_offset,
- remote_len, false);
+ desc, desc_len, false);
}
-static int smb_direct_rdma_read(struct ksmbd_transport *t, void *buf,
- unsigned int buflen, u32 remote_key,
- u64 remote_offset, u32 remote_len)
+static int smb_direct_rdma_read(struct ksmbd_transport *t,
+ void *buf, unsigned int buflen,
+ struct smb2_buffer_desc_v1 *desc,
+ unsigned int desc_len)
{
return smb_direct_rdma_xmit(smb_trans_direct_transfort(t), buf, buflen,
- remote_key, remote_offset,
- remote_len, true);
+ desc, desc_len, true);
}
static void smb_direct_disconnect(struct ksmbd_transport *t)
@@ -1638,41 +1697,57 @@ out_err:
return ret;
}
+static unsigned int smb_direct_get_max_fr_pages(struct smb_direct_transport *t)
+{
+ return min_t(unsigned int,
+ t->cm_id->device->attrs.max_fast_reg_page_list_len,
+ 256);
+}
+
static int smb_direct_init_params(struct smb_direct_transport *t,
struct ib_qp_cap *cap)
{
struct ib_device *device = t->cm_id->device;
- int max_send_sges, max_pages, max_rw_wrs, max_send_wrs;
+ int max_send_sges, max_rw_wrs, max_send_wrs;
+ unsigned int max_sge_per_wr, wrs_per_credit;
- /* need 2 more sge. because a SMB_DIRECT header will be mapped,
- * and maybe a send buffer could be not page aligned.
+ /* need 3 more sge. because a SMB_DIRECT header, SMB2 header,
+ * SMB2 response could be mapped.
*/
t->max_send_size = smb_direct_max_send_size;
- max_send_sges = DIV_ROUND_UP(t->max_send_size, PAGE_SIZE) + 2;
+ max_send_sges = DIV_ROUND_UP(t->max_send_size, PAGE_SIZE) + 3;
if (max_send_sges > SMB_DIRECT_MAX_SEND_SGES) {
pr_err("max_send_size %d is too large\n", t->max_send_size);
return -EINVAL;
}
- /*
- * allow smb_direct_max_outstanding_rw_ops of in-flight RDMA
- * read/writes. HCA guarantees at least max_send_sge of sges for
- * a RDMA read/write work request, and if memory registration is used,
- * we need reg_mr, local_inv wrs for each read/write.
+ /* Calculate the number of work requests for RDMA R/W.
+ * The maximum number of pages which can be registered
+ * with one Memory region can be transferred with one
+ * R/W credit. And at least 4 work requests for each credit
+ * are needed for MR registration, RDMA R/W, local & remote
+ * MR invalidation.
*/
t->max_rdma_rw_size = smb_direct_max_read_write_size;
- max_pages = DIV_ROUND_UP(t->max_rdma_rw_size, PAGE_SIZE) + 1;
- max_rw_wrs = DIV_ROUND_UP(max_pages, SMB_DIRECT_MAX_SEND_SGES);
- max_rw_wrs += rdma_rw_mr_factor(device, t->cm_id->port_num,
- max_pages) * 2;
- max_rw_wrs *= smb_direct_max_outstanding_rw_ops;
+ t->pages_per_rw_credit = smb_direct_get_max_fr_pages(t);
+ t->max_rw_credits = DIV_ROUND_UP(t->max_rdma_rw_size,
+ (t->pages_per_rw_credit - 1) *
+ PAGE_SIZE);
+
+ max_sge_per_wr = min_t(unsigned int, device->attrs.max_send_sge,
+ device->attrs.max_sge_rd);
+ max_sge_per_wr = max_t(unsigned int, max_sge_per_wr,
+ max_send_sges);
+ wrs_per_credit = max_t(unsigned int, 4,
+ DIV_ROUND_UP(t->pages_per_rw_credit,
+ max_sge_per_wr) + 1);
+ max_rw_wrs = t->max_rw_credits * wrs_per_credit;
max_send_wrs = smb_direct_send_credit_target + max_rw_wrs;
if (max_send_wrs > device->attrs.max_cqe ||
max_send_wrs > device->attrs.max_qp_wr) {
- pr_err("consider lowering send_credit_target = %d, or max_outstanding_rw_ops = %d\n",
- smb_direct_send_credit_target,
- smb_direct_max_outstanding_rw_ops);
+ pr_err("consider lowering send_credit_target = %d\n",
+ smb_direct_send_credit_target);
pr_err("Possible CQE overrun, device reporting max_cqe %d max_qp_wr %d\n",
device->attrs.max_cqe, device->attrs.max_qp_wr);
return -EINVAL;
@@ -1687,11 +1762,6 @@ static int smb_direct_init_params(struct smb_direct_transport *t,
return -EINVAL;
}
- if (device->attrs.max_send_sge < SMB_DIRECT_MAX_SEND_SGES) {
- pr_err("warning: device max_send_sge = %d too small\n",
- device->attrs.max_send_sge);
- return -EINVAL;
- }
if (device->attrs.max_recv_sge < SMB_DIRECT_MAX_RECV_SGES) {
pr_err("warning: device max_recv_sge = %d too small\n",
device->attrs.max_recv_sge);
@@ -1707,7 +1777,7 @@ static int smb_direct_init_params(struct smb_direct_transport *t,
t->send_credit_target = smb_direct_send_credit_target;
atomic_set(&t->send_credits, 0);
- atomic_set(&t->rw_avail_ops, smb_direct_max_outstanding_rw_ops);
+ atomic_set(&t->rw_credits, t->max_rw_credits);
t->max_send_size = smb_direct_max_send_size;
t->max_recv_size = smb_direct_max_receive_size;
@@ -1715,12 +1785,10 @@ static int smb_direct_init_params(struct smb_direct_transport *t,
cap->max_send_wr = max_send_wrs;
cap->max_recv_wr = t->recv_credit_max;
- cap->max_send_sge = SMB_DIRECT_MAX_SEND_SGES;
+ cap->max_send_sge = max_sge_per_wr;
cap->max_recv_sge = SMB_DIRECT_MAX_RECV_SGES;
cap->max_inline_data = 0;
- cap->max_rdma_ctxs =
- rdma_rw_mr_factor(device, t->cm_id->port_num, max_pages) *
- smb_direct_max_outstanding_rw_ops;
+ cap->max_rdma_ctxs = t->max_rw_credits;
return 0;
}
@@ -1813,7 +1881,8 @@ static int smb_direct_create_qpair(struct smb_direct_transport *t,
}
t->send_cq = ib_alloc_cq(t->cm_id->device, t,
- t->send_credit_target, 0, IB_POLL_WORKQUEUE);
+ smb_direct_send_credit_target + cap->max_rdma_ctxs,
+ 0, IB_POLL_WORKQUEUE);
if (IS_ERR(t->send_cq)) {
pr_err("Can't create RDMA send CQ\n");
ret = PTR_ERR(t->send_cq);
@@ -1822,8 +1891,7 @@ static int smb_direct_create_qpair(struct smb_direct_transport *t,
}
t->recv_cq = ib_alloc_cq(t->cm_id->device, t,
- cap->max_send_wr + cap->max_rdma_ctxs,
- 0, IB_POLL_WORKQUEUE);
+ t->recv_credit_max, 0, IB_POLL_WORKQUEUE);
if (IS_ERR(t->recv_cq)) {
pr_err("Can't create RDMA recv CQ\n");
ret = PTR_ERR(t->recv_cq);
@@ -1852,17 +1920,12 @@ static int smb_direct_create_qpair(struct smb_direct_transport *t,
pages_per_rw = DIV_ROUND_UP(t->max_rdma_rw_size, PAGE_SIZE) + 1;
if (pages_per_rw > t->cm_id->device->attrs.max_sgl_rd) {
- int pages_per_mr, mr_count;
-
- pages_per_mr = min_t(int, pages_per_rw,
- t->cm_id->device->attrs.max_fast_reg_page_list_len);
- mr_count = DIV_ROUND_UP(pages_per_rw, pages_per_mr) *
- atomic_read(&t->rw_avail_ops);
- ret = ib_mr_pool_init(t->qp, &t->qp->rdma_mrs, mr_count,
- IB_MR_TYPE_MEM_REG, pages_per_mr, 0);
+ ret = ib_mr_pool_init(t->qp, &t->qp->rdma_mrs,
+ t->max_rw_credits, IB_MR_TYPE_MEM_REG,
+ t->pages_per_rw_credit, 0);
if (ret) {
pr_err("failed to init mr pool count %d pages %d\n",
- mr_count, pages_per_mr);
+ t->max_rw_credits, t->pages_per_rw_credit);
goto err;
}
}
diff --git a/fs/ksmbd/transport_rdma.h b/fs/ksmbd/transport_rdma.h
index 5567d93a6f96..77aee4e5c9dc 100644
--- a/fs/ksmbd/transport_rdma.h
+++ b/fs/ksmbd/transport_rdma.h
@@ -7,6 +7,10 @@
#ifndef __KSMBD_TRANSPORT_RDMA_H__
#define __KSMBD_TRANSPORT_RDMA_H__
+#define SMBD_DEFAULT_IOSIZE (8 * 1024 * 1024)
+#define SMBD_MIN_IOSIZE (512 * 1024)
+#define SMBD_MAX_IOSIZE (16 * 1024 * 1024)
+
/* SMB DIRECT negotiation request packet [MS-SMBD] 2.2.1 */
struct smb_direct_negotiate_req {
__le16 min_version;
@@ -52,10 +56,14 @@ struct smb_direct_data_transfer {
int ksmbd_rdma_init(void);
void ksmbd_rdma_destroy(void);
bool ksmbd_rdma_capable_netdev(struct net_device *netdev);
+void init_smbd_max_io_size(unsigned int sz);
+unsigned int get_smbd_max_read_write_size(void);
#else
static inline int ksmbd_rdma_init(void) { return 0; }
static inline int ksmbd_rdma_destroy(void) { return 0; }
static inline bool ksmbd_rdma_capable_netdev(struct net_device *netdev) { return false; }
+static inline void init_smbd_max_io_size(unsigned int sz) { }
+static inline unsigned int get_smbd_max_read_write_size(void) { return 0; }
#endif
#endif /* __KSMBD_TRANSPORT_RDMA_H__ */
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