leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

ksmbd: remove smb2_buf_length in smb2_hdr

Browse Source 
To move smb2_hdr to smbfs_common, This patch remove smb2_buf_length
variable in smb2_hdr. Also, declare smb2_get_msg function to get smb2
request/response from ->request/response_buf.

Cc: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Namjae Jeon 2021-11-03 08:08:44 +09:00 committed by Steve French
parent 561a1cf575
commit cb4517201b
10 changed files with 260 additions and 262 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
fs/ksmbd/auth.c
View File

@ -873,9 +873,9 @@ int ksmbd_gen_preauth_integrity_hash(struct ksmbd_conn *conn, char *buf,
__u8 *pi_hash)
{
int rc;
struct smb2_hdr *rcv_hdr = (struct smb2_hdr *)buf;
struct smb2_hdr *rcv_hdr = smb2_get_msg(buf);
char *all_bytes_msg = (char *)&rcv_hdr->ProtocolId;
int msg_size = be32_to_cpu(rcv_hdr->smb2_buf_length);
int msg_size = get_rfc1002_len(buf);
struct ksmbd_crypto_ctx *ctx = NULL;
if (conn->preauth_info->Preauth_HashId !=

9
fs/ksmbd/connection.c
View File

@ -158,14 +158,13 @@ void ksmbd_conn_wait_idle(struct ksmbd_conn *conn)
int ksmbd_conn_write(struct ksmbd_work *work)
{
struct ksmbd_conn *conn = work->conn;
struct smb_hdr *rsp_hdr = work->response_buf;
size_t len = 0;
int sent;
struct kvec iov[3];
int iov_idx = 0;
ksmbd_conn_try_dequeue_request(work);
if (!rsp_hdr) {
if (!work->response_buf) {
pr_err("NULL response header\n");
return -EINVAL;
}
@ -177,7 +176,7 @@ int ksmbd_conn_write(struct ksmbd_work *work)
}
if (work->aux_payload_sz) {
iov[iov_idx] = (struct kvec) { rsp_hdr, work->resp_hdr_sz };
iov[iov_idx] = (struct kvec) { work->response_buf, work->resp_hdr_sz };
len += iov[iov_idx++].iov_len;
iov[iov_idx] = (struct kvec) { work->aux_payload_buf, work->aux_payload_sz };
len += iov[iov_idx++].iov_len;
@ -185,8 +184,8 @@ int ksmbd_conn_write(struct ksmbd_work *work)
if (work->tr_buf)
iov[iov_idx].iov_len = work->resp_hdr_sz;
else
iov[iov_idx].iov_len = get_rfc1002_len(rsp_hdr) + 4;
iov[iov_idx].iov_base = rsp_hdr;
iov[iov_idx].iov_len = get_rfc1002_len(work->response_buf) + 4;
iov[iov_idx].iov_base = work->response_buf;
len += iov[iov_idx++].iov_len;
}

4
fs/ksmbd/ksmbd_work.h
View File

@ -92,7 +92,7 @@ struct ksmbd_work {
*/
static inline void *ksmbd_resp_buf_next(struct ksmbd_work *work)
{
return work->response_buf + work->next_smb2_rsp_hdr_off;
return work->response_buf + work->next_smb2_rsp_hdr_off + 4;
}
/**
@ -101,7 +101,7 @@ static inline void *ksmbd_resp_buf_next(struct ksmbd_work *work)
*/
static inline void *ksmbd_req_buf_next(struct ksmbd_work *work)
{
return work->request_buf + work->next_smb2_rcv_hdr_off;
return work->request_buf + work->next_smb2_rcv_hdr_off + 4;
}
struct ksmbd_work *ksmbd_alloc_work_struct(void);

24
fs/ksmbd/oplock.c
View File

@ -629,10 +629,10 @@ static void __smb2_oplock_break_noti(struct work_struct *wk)
return;
}
rsp_hdr = work->response_buf;
rsp_hdr = smb2_get_msg(work->response_buf);
memset(rsp_hdr, 0, sizeof(struct smb2_hdr) + 2);
rsp_hdr->smb2_buf_length =
cpu_to_be32(smb2_hdr_size_no_buflen(conn->vals));
*(__be32 *)work->response_buf =
cpu_to_be32(conn->vals->header_size);
rsp_hdr->ProtocolId = SMB2_PROTO_NUMBER;
rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE;
rsp_hdr->CreditRequest = cpu_to_le16(0);
@ -645,7 +645,7 @@ static void __smb2_oplock_break_noti(struct work_struct *wk)
rsp_hdr->SessionId = 0;
memset(rsp_hdr->Signature, 0, 16);
rsp = work->response_buf;
rsp = smb2_get_msg(work->response_buf);
rsp->StructureSize = cpu_to_le16(24);
if (!br_info->open_trunc &&
@ -659,7 +659,7 @@ static void __smb2_oplock_break_noti(struct work_struct *wk)
rsp->PersistentFid = cpu_to_le64(fp->persistent_id);
rsp->VolatileFid = cpu_to_le64(fp->volatile_id);
inc_rfc1001_len(rsp, 24);
inc_rfc1001_len(work->response_buf, 24);
ksmbd_debug(OPLOCK,
"sending oplock break v_id %llu p_id = %llu lock level = %d\n",
@ -736,10 +736,10 @@ static void __smb2_lease_break_noti(struct work_struct *wk)
return;
}
rsp_hdr = work->response_buf;
rsp_hdr = smb2_get_msg(work->response_buf);
memset(rsp_hdr, 0, sizeof(struct smb2_hdr) + 2);
rsp_hdr->smb2_buf_length =
cpu_to_be32(smb2_hdr_size_no_buflen(conn->vals));
*(__be32 *)work->response_buf =
cpu_to_be32(conn->vals->header_size);
rsp_hdr->ProtocolId = SMB2_PROTO_NUMBER;
rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE;
rsp_hdr->CreditRequest = cpu_to_le16(0);
@ -752,7 +752,7 @@ static void __smb2_lease_break_noti(struct work_struct *wk)
rsp_hdr->SessionId = 0;
memset(rsp_hdr->Signature, 0, 16);
rsp = work->response_buf;
rsp = smb2_get_msg(work->response_buf);
rsp->StructureSize = cpu_to_le16(44);
rsp->Epoch = br_info->epoch;
rsp->Flags = 0;
@ -768,7 +768,7 @@ static void __smb2_lease_break_noti(struct work_struct *wk)
rsp->AccessMaskHint = 0;
rsp->ShareMaskHint = 0;
inc_rfc1001_len(rsp, 44);
inc_rfc1001_len(work->response_buf, 44);
ksmbd_conn_write(work);
ksmbd_free_work_struct(work);
@ -1398,7 +1398,7 @@ struct lease_ctx_info *parse_lease_state(void *open_req)
if (!lreq)
return NULL;
data_offset = (char *)req + 4 + le32_to_cpu(req->CreateContextsOffset);
data_offset = (char *)req + le32_to_cpu(req->CreateContextsOffset);
cc = (struct create_context *)data_offset;
do {
cc = (struct create_context *)((char *)cc + next);
@ -1462,7 +1462,7 @@ struct create_context *smb2_find_context_vals(void *open_req, const char *tag)
* CreateContextsOffset and CreateContextsLength are guaranteed to
* be valid because of ksmbd_smb2_check_message().
*/
cc = (struct create_context *)((char *)req + 4 +
cc = (struct create_context *)((char *)req +
le32_to_cpu(req->CreateContextsOffset));
remain_len = le32_to_cpu(req->CreateContextsLength);
do {

2
fs/ksmbd/smb2misc.c
View File

@ -351,7 +351,7 @@ int ksmbd_smb2_check_message(struct ksmbd_work *work)
struct smb2_hdr *hdr = &pdu->hdr;
int command;
__u32 clc_len; /* calculated length */
__u32 len = get_rfc1002_len(pdu);
__u32 len = get_rfc1002_len(work->request_buf);
if (le32_to_cpu(hdr->NextCommand) > 0)
len = le32_to_cpu(hdr->NextCommand);

440
fs/ksmbd/smb2pdu.c
View File

File diff suppressed because it is too large Load Diff

20
fs/ksmbd/smb2pdu.h
View File

@ -130,11 +130,6 @@
cpu_to_le16(__SMB2_HEADER_STRUCTURE_SIZE)
struct smb2_hdr {
__be32 smb2_buf_length; /* big endian on wire */
/*
* length is only two or three bytes - with
* one or two byte type preceding it that MBZ
*/
__le32 ProtocolId; /* 0xFE 'S' 'M' 'B' */
__le16 StructureSize; /* 64 */
__le16 CreditCharge; /* MBZ */
@ -253,14 +248,14 @@ struct preauth_integrity_info {
__u8 Preauth_HashValue[PREAUTH_HASHVALUE_SIZE];
};
/* offset is sizeof smb2_negotiate_rsp - 4 but rounded up to 8 bytes. */
/* offset is sizeof smb2_negotiate_rsp but rounded up to 8 bytes. */
#ifdef CONFIG_SMB_SERVER_KERBEROS5
/* sizeof(struct smb2_negotiate_rsp) - 4 =
/* sizeof(struct smb2_negotiate_rsp) =
* header(64) + response(64) + GSS_LENGTH(96) + GSS_PADDING(0)
*/
#define OFFSET_OF_NEG_CONTEXT 0xe0
#else
/* sizeof(struct smb2_negotiate_rsp) - 4 =
/* sizeof(struct smb2_negotiate_rsp) =
* header(64) + response(64) + GSS_LENGTH(74) + GSS_PADDING(6)
*/
#define OFFSET_OF_NEG_CONTEXT 0xd0
@ -1705,4 +1700,13 @@ int smb2_ioctl(struct ksmbd_work *work);
int smb2_oplock_break(struct ksmbd_work *work);
int smb2_notify(struct ksmbd_work *ksmbd_work);
/*
* Get the body of the smb2 message excluding the 4 byte rfc1002 headers
* from request/response buffer.
*/
static inline void *smb2_get_msg(void *buf)
{
return buf + 4;
}
#endif /* _SMB2PDU_H */

11
fs/ksmbd/smb_common.c
View File

@ -239,14 +239,14 @@ int ksmbd_lookup_dialect_by_id(__le16 *cli_dialects, __le16 dialects_count)
static int ksmbd_negotiate_smb_dialect(void *buf)
{
int smb_buf_length = get_rfc1002_len(buf);
__le32 proto = ((struct smb2_hdr *)buf)->ProtocolId;
__le32 proto = ((struct smb2_hdr *)smb2_get_msg(buf))->ProtocolId;
if (proto == SMB2_PROTO_NUMBER) {
struct smb2_negotiate_req *req;
int smb2_neg_size =
offsetof(struct smb2_negotiate_req, Dialects) - 4;
offsetof(struct smb2_negotiate_req, Dialects);
req = (struct smb2_negotiate_req *)buf;
req = (struct smb2_negotiate_req *)smb2_get_msg(buf);
if (smb2_neg_size > smb_buf_length)
goto err_out;
@ -445,11 +445,12 @@ int ksmbd_smb_negotiate_common(struct ksmbd_work *work, unsigned int command)
struct ksmbd_conn *conn = work->conn;
int ret;
conn->dialect = ksmbd_negotiate_smb_dialect(work->request_buf);
conn->dialect =
ksmbd_negotiate_smb_dialect(work->request_buf);
ksmbd_debug(SMB, "conn->dialect 0x%x\n", conn->dialect);
if (command == SMB2_NEGOTIATE_HE) {
struct smb2_hdr *smb2_hdr = work->request_buf;
struct smb2_hdr *smb2_hdr = smb2_get_msg(work->request_buf);
if (smb2_hdr->ProtocolId != SMB2_PROTO_NUMBER) {
ksmbd_debug(SMB, "Downgrade to SMB1 negotiation\n");

6
fs/ksmbd/smb_common.h
View File

@ -477,12 +477,6 @@ struct smb_version_cmds {
int (*proc)(struct ksmbd_work *swork);
};
static inline size_t
smb2_hdr_size_no_buflen(struct smb_version_values *vals)
{
return vals->header_size - 4;
}
int ksmbd_min_protocol(void);
int ksmbd_max_protocol(void);

2
fs/ksmbd/transport_rdma.c
View File

@ -484,7 +484,7 @@ static int smb_direct_check_recvmsg(struct smb_direct_recvmsg *recvmsg)
struct smb_direct_data_transfer *req =
(struct smb_direct_data_transfer *)recvmsg->packet;
struct smb2_hdr *hdr = (struct smb2_hdr *)(recvmsg->packet
+ le32_to_cpu(req->data_offset) - 4);
+ le32_to_cpu(req->data_offset));
ksmbd_debug(RDMA,
"CreditGranted: %u, CreditRequested: %u, DataLength: %u, RemainingDataLength: %u, SMB: %x, Command: %u\n",
le16_to_cpu(req->credits_granted),