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smb: client: make use of common smbdirect_pdu.h

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[ Upstream commit 64946d5be665ddac6b5bf11f5b5ff319aae0f4c6 ]

Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: Hyunchul Lee <hyc.lee@gmail.com>
Cc: Meetakshi Setiya <meetakshisetiyaoss@gmail.com>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Stable-dep-of: 43e7e284fc77 ("cifs: Fix the smbd_response slab to allow usercopy")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Stefan Metzmacher
2025-05-28 18:01:31 +02:00
committed by Greg Kroah-Hartman
parent a9bb4006c4
commit 6509de31b1
2 changed files with 19 additions and 62 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
fs/smb/client/smbdirect.c
View File

@@ -7,6 +7,7 @@
#include <linux/module.h>
#include <linux/highmem.h>
#include <linux/folio_queue.h>
#include "../common/smbdirect/smbdirect_pdu.h"
#include "smbdirect.h"
#include "cifs_debug.h"
#include "cifsproto.h"
@@ -50,9 +51,6 @@ struct smb_extract_to_rdma {
static ssize_t smb_extract_iter_to_rdma(struct iov_iter *iter, size_t len,
struct smb_extract_to_rdma *rdma);
/* SMBD version number */
#define SMBD_V1 0x0100
/* Port numbers for SMBD transport */
#define SMB_PORT 445
#define SMBD_PORT 5445
@@ -299,7 +297,7 @@ static void send_done(struct ib_cq *cq, struct ib_wc *wc)
mempool_free(request, request->info->request_mempool);
}
static void dump_smbd_negotiate_resp(struct smbd_negotiate_resp *resp)
static void dump_smbdirect_negotiate_resp(struct smbdirect_negotiate_resp *resp)
{
log_rdma_event(INFO, "resp message min_version %u max_version %u negotiated_version %u credits_requested %u credits_granted %u status %u max_readwrite_size %u preferred_send_size %u max_receive_size %u max_fragmented_size %u\n",
resp->min_version, resp->max_version,
@@ -318,15 +316,15 @@ static bool process_negotiation_response(
struct smbd_response *response, int packet_length)
{
struct smbd_connection *info = response->info;
struct smbd_negotiate_resp *packet = smbd_response_payload(response);
struct smbdirect_negotiate_resp *packet = smbd_response_payload(response);
if (packet_length < sizeof(struct smbd_negotiate_resp)) {
if (packet_length < sizeof(struct smbdirect_negotiate_resp)) {
log_rdma_event(ERR,
"error: packet_length=%d\n", packet_length);
return false;
}
if (le16_to_cpu(packet->negotiated_version) != SMBD_V1) {
if (le16_to_cpu(packet->negotiated_version) != SMBDIRECT_V1) {
log_rdma_event(ERR, "error: negotiated_version=%x\n",
le16_to_cpu(packet->negotiated_version));
return false;
@@ -448,7 +446,7 @@ static void smbd_post_send_credits(struct work_struct *work)
/* Called from softirq, when recv is done */
static void recv_done(struct ib_cq *cq, struct ib_wc *wc)
{
struct smbd_data_transfer *data_transfer;
struct smbdirect_data_transfer *data_transfer;
struct smbd_response *response =
container_of(wc->wr_cqe, struct smbd_response, cqe);
struct smbd_connection *info = response->info;
@@ -474,7 +472,7 @@ static void recv_done(struct ib_cq *cq, struct ib_wc *wc)
switch (response->type) {
/* SMBD negotiation response */
case SMBD_NEGOTIATE_RESP:
dump_smbd_negotiate_resp(smbd_response_payload(response));
dump_smbdirect_negotiate_resp(smbd_response_payload(response));
info->full_packet_received = true;
info->negotiate_done =
process_negotiation_response(response, wc->byte_len);
@@ -531,7 +529,7 @@ static void recv_done(struct ib_cq *cq, struct ib_wc *wc)
/* Send a KEEP_ALIVE response right away if requested */
info->keep_alive_requested = KEEP_ALIVE_NONE;
if (le16_to_cpu(data_transfer->flags) &
SMB_DIRECT_RESPONSE_REQUESTED) {
SMBDIRECT_FLAG_RESPONSE_REQUESTED) {
info->keep_alive_requested = KEEP_ALIVE_PENDING;
}
@@ -686,7 +684,7 @@ static int smbd_post_send_negotiate_req(struct smbd_connection *info)
struct ib_send_wr send_wr;
int rc = -ENOMEM;
struct smbd_request *request;
struct smbd_negotiate_req *packet;
struct smbdirect_negotiate_req *packet;
request = mempool_alloc(info->request_mempool, GFP_KERNEL);
if (!request)
@@ -695,8 +693,8 @@ static int smbd_post_send_negotiate_req(struct smbd_connection *info)
request->info = info;
packet = smbd_request_payload(request);
packet->min_version = cpu_to_le16(SMBD_V1);
packet->max_version = cpu_to_le16(SMBD_V1);
packet->min_version = cpu_to_le16(SMBDIRECT_V1);
packet->max_version = cpu_to_le16(SMBDIRECT_V1);
packet->reserved = 0;
packet->credits_requested = cpu_to_le16(info->send_credit_target);
packet->preferred_send_size = cpu_to_le32(info->max_send_size);
@@ -774,10 +772,10 @@ static int manage_credits_prior_sending(struct smbd_connection *info)
/*
* Check if we need to send a KEEP_ALIVE message
* The idle connection timer triggers a KEEP_ALIVE message when expires
* SMB_DIRECT_RESPONSE_REQUESTED is set in the message flag to have peer send
* SMBDIRECT_FLAG_RESPONSE_REQUESTED is set in the message flag to have peer send
* back a response.
* return value:
* 1 if SMB_DIRECT_RESPONSE_REQUESTED needs to be set
* 1 if SMBDIRECT_FLAG_RESPONSE_REQUESTED needs to be set
* 0: otherwise
*/
static int manage_keep_alive_before_sending(struct smbd_connection *info)
@@ -837,7 +835,7 @@ static int smbd_post_send_iter(struct smbd_connection *info,
int header_length;
int data_length;
struct smbd_request *request;
struct smbd_data_transfer *packet;
struct smbdirect_data_transfer *packet;
int new_credits = 0;
wait_credit:
@@ -919,7 +917,7 @@ wait_send_queue:
packet->flags = 0;
if (manage_keep_alive_before_sending(info))
packet->flags |= cpu_to_le16(SMB_DIRECT_RESPONSE_REQUESTED);
packet->flags |= cpu_to_le16(SMBDIRECT_FLAG_RESPONSE_REQUESTED);
packet->reserved = 0;
if (!data_length)
@@ -938,10 +936,10 @@ wait_send_queue:
le32_to_cpu(packet->remaining_data_length));
/* Map the packet to DMA */
header_length = sizeof(struct smbd_data_transfer);
header_length = sizeof(struct smbdirect_data_transfer);
/* If this is a packet without payload, don't send padding */
if (!data_length)
header_length = offsetof(struct smbd_data_transfer, padding);
header_length = offsetof(struct smbdirect_data_transfer, padding);
request->sge[0].addr = ib_dma_map_single(info->id->device,
(void *)packet,
@@ -1432,7 +1430,7 @@ static int allocate_caches_and_workqueue(struct smbd_connection *info)
kmem_cache_create(
name,
sizeof(struct smbd_request) +
sizeof(struct smbd_data_transfer),
sizeof(struct smbdirect_data_transfer),
0, SLAB_HWCACHE_ALIGN, NULL);
if (!info->request_cache)
return -ENOMEM;
@@ -1735,7 +1733,7 @@ static int smbd_recv_buf(struct smbd_connection *info, char *buf,
unsigned int size)
{
struct smbd_response *response;
struct smbd_data_transfer *data_transfer;
struct smbdirect_data_transfer *data_transfer;
int to_copy, to_read, data_read, offset;
u32 data_length, remaining_data_length, data_offset;
int rc;

41
fs/smb/client/smbdirect.h
View File

@@ -177,47 +177,6 @@ enum smbd_message_type {
SMBD_TRANSFER_DATA,
};
#define SMB_DIRECT_RESPONSE_REQUESTED 0x0001
/* SMBD negotiation request packet [MS-SMBD] 2.2.1 */
struct smbd_negotiate_req {
__le16 min_version;
__le16 max_version;
__le16 reserved;
__le16 credits_requested;
__le32 preferred_send_size;
__le32 max_receive_size;
__le32 max_fragmented_size;
} __packed;
/* SMBD negotiation response packet [MS-SMBD] 2.2.2 */
struct smbd_negotiate_resp {
__le16 min_version;
__le16 max_version;
__le16 negotiated_version;
__le16 reserved;
__le16 credits_requested;
__le16 credits_granted;
__le32 status;
__le32 max_readwrite_size;
__le32 preferred_send_size;
__le32 max_receive_size;
__le32 max_fragmented_size;
} __packed;
/* SMBD data transfer packet with payload [MS-SMBD] 2.2.3 */
struct smbd_data_transfer {
__le16 credits_requested;
__le16 credits_granted;
__le16 flags;
__le16 reserved;
__le32 remaining_data_length;
__le32 data_offset;
__le32 data_length;
__le32 padding;
__u8 buffer[];
} __packed;
/* The packet fields for a registered RDMA buffer */
struct smbd_buffer_descriptor_v1 {
__le64 offset;