diff options
| -rw-r--r-- | fs/cifs/smb2ops.c | 38 | ||||
| -rw-r--r-- | fs/cifs/smb2pdu.h | 3 | ||||
| -rw-r--r-- | fs/cifs/smbdirect.c | 3 |
3 files changed, 20 insertions, 24 deletions
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 9c9258fc8756..b36c46f48705 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -328,16 +328,6 @@ smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info) /* start with specified wsize, or default */ wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE; wsize = min_t(unsigned int, wsize, server->max_write); -#ifdef CONFIG_CIFS_SMB_DIRECT - if (server->rdma) { - if (server->sign) - wsize = min_t(unsigned int, - wsize, server->smbd_conn->max_fragmented_send_size); - else - wsize = min_t(unsigned int, - wsize, server->smbd_conn->max_readwrite_size); - } -#endif if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE); @@ -356,8 +346,15 @@ smb3_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info) #ifdef CONFIG_CIFS_SMB_DIRECT if (server->rdma) { if (server->sign) + /* + * Account for SMB2 data transfer packet header and + * possible encryption header + */ wsize = min_t(unsigned int, - wsize, server->smbd_conn->max_fragmented_send_size); + wsize, + server->smbd_conn->max_fragmented_send_size - + SMB2_READWRITE_PDU_HEADER_SIZE - + sizeof(struct smb2_transform_hdr)); else wsize = min_t(unsigned int, wsize, server->smbd_conn->max_readwrite_size); @@ -378,16 +375,6 @@ smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info) /* start with specified rsize, or default */ rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE; rsize = min_t(unsigned int, rsize, server->max_read); -#ifdef CONFIG_CIFS_SMB_DIRECT - if (server->rdma) { - if (server->sign) - rsize = min_t(unsigned int, - rsize, server->smbd_conn->max_fragmented_recv_size); - else - rsize = min_t(unsigned int, - rsize, server->smbd_conn->max_readwrite_size); - } -#endif if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE); @@ -407,8 +394,15 @@ smb3_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info) #ifdef CONFIG_CIFS_SMB_DIRECT if (server->rdma) { if (server->sign) + /* + * Account for SMB2 data transfer packet header and + * possible encryption header + */ rsize = min_t(unsigned int, - rsize, server->smbd_conn->max_fragmented_recv_size); + rsize, + server->smbd_conn->max_fragmented_recv_size - + SMB2_READWRITE_PDU_HEADER_SIZE - + sizeof(struct smb2_transform_hdr)); else rsize = min_t(unsigned int, rsize, server->smbd_conn->max_readwrite_size); diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h index dda928d05c13..10acf90f858d 100644 --- a/fs/cifs/smb2pdu.h +++ b/fs/cifs/smb2pdu.h @@ -120,6 +120,9 @@ struct smb2_sync_hdr { __u8 Signature[16]; } __packed; +/* The total header size for SMB2 read and write */ +#define SMB2_READWRITE_PDU_HEADER_SIZE (48 + sizeof(struct smb2_sync_hdr)) + struct smb2_sync_pdu { struct smb2_sync_hdr sync_hdr; __le16 StructureSize2; /* size of wct area (varies, request specific) */ diff --git a/fs/cifs/smbdirect.c b/fs/cifs/smbdirect.c index 5b1b97e9e0c9..a6ae29b3c4e7 100644 --- a/fs/cifs/smbdirect.c +++ b/fs/cifs/smbdirect.c @@ -2097,8 +2097,7 @@ int smbd_send(struct TCP_Server_Info *server, for (i = 0; i < num_rqst; i++) remaining_data_length += smb_rqst_len(server, &rqst_array[i]); - if (remaining_data_length + sizeof(struct smbd_data_transfer) > - info->max_fragmented_send_size) { + if (remaining_data_length > info->max_fragmented_send_size) { log_write(ERR, "payload size %d > max size %d\n", remaining_data_length, info->max_fragmented_send_size); rc = -EINVAL; |