CIFS: Move protocol specific demultiplex thread calls to ops struct
Acked-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <sfrench@us.ibm.com>
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@ -57,19 +57,21 @@ cifs_dump_mem(char *label, void *data, int length)
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}
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}
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#ifdef CONFIG_CIFS_DEBUG2
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void cifs_dump_detail(void *buf)
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{
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#ifdef CONFIG_CIFS_DEBUG2
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struct smb_hdr *smb = (struct smb_hdr *)buf;
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cERROR(1, "Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d",
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smb->Command, smb->Status.CifsError,
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smb->Flags, smb->Flags2, smb->Mid, smb->Pid);
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cERROR(1, "smb buf %p len %d", smb, smbCalcSize(smb));
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#endif /* CONFIG_CIFS_DEBUG2 */
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}
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void cifs_dump_mids(struct TCP_Server_Info *server)
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{
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#ifdef CONFIG_CIFS_DEBUG2
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struct list_head *tmp;
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struct mid_q_entry *mid_entry;
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@ -102,8 +104,8 @@ void cifs_dump_mids(struct TCP_Server_Info *server)
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}
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}
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spin_unlock(&GlobalMid_Lock);
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}
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#endif /* CONFIG_CIFS_DEBUG2 */
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}
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#ifdef CONFIG_PROC_FS
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static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
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@ -24,10 +24,10 @@
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#define _H_CIFS_DEBUG
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void cifs_dump_mem(char *label, void *data, int length);
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#ifdef CONFIG_CIFS_DEBUG2
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#define DBG2 2
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void cifs_dump_detail(void *);
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void cifs_dump_mids(struct TCP_Server_Info *);
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#ifdef CONFIG_CIFS_DEBUG2
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#define DBG2 2
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#else
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#define DBG2 0
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#endif
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@ -175,6 +175,12 @@ struct smb_version_operations {
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unsigned int (*read_data_length)(char *);
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/* map smb to linux error */
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int (*map_error)(char *, bool);
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/* find mid corresponding to the response message */
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struct mid_q_entry * (*find_mid)(struct TCP_Server_Info *, char *);
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void (*dump_detail)(void *);
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/* verify the message */
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int (*check_message)(char *, unsigned int);
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bool (*is_oplock_break)(char *, struct TCP_Server_Info *);
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};
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struct smb_version_values {
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@ -783,25 +783,6 @@ is_smb_response(struct TCP_Server_Info *server, unsigned char type)
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return false;
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}
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static struct mid_q_entry *
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find_mid(struct TCP_Server_Info *server, char *buffer)
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{
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struct smb_hdr *buf = (struct smb_hdr *)buffer;
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struct mid_q_entry *mid;
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spin_lock(&GlobalMid_Lock);
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list_for_each_entry(mid, &server->pending_mid_q, qhead) {
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if (mid->mid == buf->Mid &&
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mid->mid_state == MID_REQUEST_SUBMITTED &&
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le16_to_cpu(mid->command) == buf->Command) {
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spin_unlock(&GlobalMid_Lock);
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return mid;
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}
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}
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spin_unlock(&GlobalMid_Lock);
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return NULL;
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}
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void
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dequeue_mid(struct mid_q_entry *mid, bool malformed)
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{
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@ -986,7 +967,7 @@ standard_receive3(struct TCP_Server_Info *server, struct mid_q_entry *mid)
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* 48 bytes is enough to display the header and a little bit
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* into the payload for debugging purposes.
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*/
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length = checkSMB(buf, server->total_read);
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length = server->ops->check_message(buf, server->total_read);
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if (length != 0)
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cifs_dump_mem("Bad SMB: ", buf,
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min_t(unsigned int, server->total_read, 48));
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@ -1059,7 +1040,7 @@ cifs_demultiplex_thread(void *p)
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continue;
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server->total_read += length;
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mid_entry = find_mid(server, buf);
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mid_entry = server->ops->find_mid(server, buf);
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if (!mid_entry || !mid_entry->receive)
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length = standard_receive3(server, mid_entry);
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@ -1076,13 +1057,13 @@ cifs_demultiplex_thread(void *p)
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if (mid_entry != NULL) {
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if (!mid_entry->multiRsp || mid_entry->multiEnd)
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mid_entry->callback(mid_entry);
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} else if (!is_valid_oplock_break(buf, server)) {
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} else if (!server->ops->is_oplock_break(buf, server)) {
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cERROR(1, "No task to wake, unknown frame received! "
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"NumMids %d", atomic_read(&midCount));
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cifs_dump_mem("Received Data is: ", buf,
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HEADER_SIZE(server));
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#ifdef CONFIG_CIFS_DEBUG2
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cifs_dump_detail(buf);
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server->ops->dump_detail(buf);
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cifs_dump_mids(server);
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#endif /* CIFS_DEBUG2 */
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@ -81,6 +81,25 @@ cifs_read_data_length(char *buf)
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le16_to_cpu(rsp->DataLength);
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}
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static struct mid_q_entry *
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cifs_find_mid(struct TCP_Server_Info *server, char *buffer)
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{
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struct smb_hdr *buf = (struct smb_hdr *)buffer;
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struct mid_q_entry *mid;
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spin_lock(&GlobalMid_Lock);
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list_for_each_entry(mid, &server->pending_mid_q, qhead) {
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if (mid->mid == buf->Mid &&
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mid->mid_state == MID_REQUEST_SUBMITTED &&
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le16_to_cpu(mid->command) == buf->Command) {
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spin_unlock(&GlobalMid_Lock);
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return mid;
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}
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}
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spin_unlock(&GlobalMid_Lock);
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return NULL;
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}
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struct smb_version_operations smb1_operations = {
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.send_cancel = send_nt_cancel,
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.compare_fids = cifs_compare_fids,
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@ -89,6 +108,10 @@ struct smb_version_operations smb1_operations = {
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.read_data_offset = cifs_read_data_offset,
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.read_data_length = cifs_read_data_length,
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.map_error = map_smb_to_linux_error,
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.find_mid = cifs_find_mid,
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.check_message = checkSMB,
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.dump_detail = cifs_dump_detail,
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.is_oplock_break = is_valid_oplock_break,
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};
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struct smb_version_values smb1_values = {
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