smb/client/smb2transport.c

81 	struct cifs_ses *ses = NULL;
91 	list_for_each_entry(ses, &pserver->smb_ses_list, smb_ses_list) {
92 		if (ses->Suid == ses_id)
102 	spin_lock(&ses->ses_lock);
103 	spin_lock(&ses->chan_lock);
105 	is_binding = (cifs_chan_needs_reconnect(ses, server) &&
106 		      ses->ses_status == SES_GOOD);
113 		memcpy(key, ses->smb3signingkey, SMB3_SIGN_KEY_SIZE);
114 		spin_unlock(&ses->chan_lock);
115 		spin_unlock(&ses->ses_lock);
123 	for (i = 0; i < ses->chan_count; i++) {
124 		chan = ses->chans + i;
127 			spin_unlock(&ses->chan_lock);
128 			spin_unlock(&ses->ses_lock);
132 	spin_unlock(&ses->chan_lock);
133 	spin_unlock(&ses->ses_lock);
149 	struct cifs_ses *ses;
154 	list_for_each_entry(ses, &pserver->smb_ses_list, smb_ses_list) {
155 		if (ses->Suid != ses_id)
158 		spin_lock(&ses->ses_lock);
159 		if (ses->ses_status == SES_EXITING) {
160 			spin_unlock(&ses->ses_lock);
163 		cifs_smb_ses_inc_refcount(ses);
164 		spin_unlock(&ses->ses_lock);
165 		return ses;
174 	struct cifs_ses *ses;
177 	ses = smb2_find_smb_ses_unlocked(server, ses_id);
180 	return ses;
184 smb2_find_smb_sess_tcon_unlocked(struct cifs_ses *ses, __u32  tid)
188 	list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
208 	struct cifs_ses *ses;
212 	ses = smb2_find_smb_ses_unlocked(server, ses_id);
213 	if (!ses) {
217 	tcon = smb2_find_smb_sess_tcon_unlocked(ses, tid);
219 		cifs_put_smb_ses(ses);
224 	/* tcon already has a ref to ses, so we don't need ses anymore */
225 	cifs_put_smb_ses(ses);
239 	struct cifs_ses *ses;
243 	ses = smb2_find_smb_ses(server, le64_to_cpu(shdr->SessionId));
244 	if (unlikely(!ses)) {
263 	rc = crypto_shash_setkey(shash->tfm, ses->auth_key.response,
306 	if (ses)
307 		cifs_put_smb_ses(ses);
311 static int generate_key(struct cifs_ses *ses, struct kvec label,
321 	struct TCP_Server_Info *server = ses->server;
333 		ses->auth_key.response, SMB2_NTLMV2_SESSKEY_SIZE);
404 generate_smb3signingkey(struct cifs_ses *ses,
412 	spin_lock(&ses->ses_lock);
413 	spin_lock(&ses->chan_lock);
414 	is_binding = (cifs_chan_needs_reconnect(ses, server) &&
415 		      ses->ses_status == SES_GOOD);
417 	chan_index = cifs_ses_get_chan_index(ses, server);
419 		spin_unlock(&ses->chan_lock);
420 		spin_unlock(&ses->ses_lock);
425 	spin_unlock(&ses->chan_lock);
426 	spin_unlock(&ses->ses_lock);
439 		rc = generate_key(ses, ptriplet->signing.label,
441 				  ses->chans[chan_index].signkey,
446 		rc = generate_key(ses, ptriplet->signing.label,
448 				  ses->smb3signingkey,
454 		spin_lock(&ses->chan_lock);
455 		memcpy(ses->chans[chan_index].signkey, ses->smb3signingkey,
457 		spin_unlock(&ses->chan_lock);
459 		rc = generate_key(ses, ptriplet->encryption.label,
461 				  ses->smb3encryptionkey,
465 		rc = generate_key(ses, ptriplet->decryption.label,
467 				  ses->smb3decryptionkey,
479 	cifs_dbg(VFS, "Session Id    %*ph\n", (int)sizeof(ses->Suid),
480 			&ses->Suid);
483 		 SMB2_NTLMV2_SESSKEY_SIZE, ses->auth_key.response);
485 		 SMB3_SIGN_KEY_SIZE, ses->smb3signingkey);
489 				SMB3_GCM256_CRYPTKEY_SIZE, ses->smb3encryptionkey);
491 				SMB3_GCM256_CRYPTKEY_SIZE, ses->smb3decryptionkey);
494 				SMB3_GCM128_CRYPTKEY_SIZE, ses->smb3encryptionkey);
496 				SMB3_GCM128_CRYPTKEY_SIZE, ses->smb3decryptionkey);
503 generate_smb30signingkey(struct cifs_ses *ses,
528 	return generate_smb3signingkey(ses, server, &triplet);
532 generate_smb311signingkey(struct cifs_ses *ses,
542 	d->context.iov_base = ses->preauth_sha_hash;
548 	d->context.iov_base = ses->preauth_sha_hash;
554 	d->context.iov_base = ses->preauth_sha_hash;
557 	return generate_smb3signingkey(ses, server, &triplet);
775 smb2_get_mid_entry(struct cifs_ses *ses, struct TCP_Server_Info *server,
797 	spin_lock(&ses->ses_lock);
798 	if (ses->ses_status == SES_NEW) {
801 			spin_unlock(&ses->ses_lock);
807 	if (ses->ses_status == SES_EXITING) {
809 			spin_unlock(&ses->ses_lock);
814 	spin_unlock(&ses->ses_lock);
853 smb2_setup_request(struct cifs_ses *ses, struct TCP_Server_Info *server,
863 	rc = smb2_get_mid_entry(ses, server, shdr, &mid);