736 static void build_preauth_ctxt(struct smb2_preauth_neg_context *pneg_ctxt,  in build_preauth_ctxt()  argument
739 	pneg_ctxt->ContextType = SMB2_PREAUTH_INTEGRITY_CAPABILITIES;  in build_preauth_ctxt()
740 	pneg_ctxt->DataLength = cpu_to_le16(38);  in build_preauth_ctxt()
741 	pneg_ctxt->HashAlgorithmCount = cpu_to_le16(1);  in build_preauth_ctxt()
742 	pneg_ctxt->Reserved = cpu_to_le32(0);  in build_preauth_ctxt()
743 	pneg_ctxt->SaltLength = cpu_to_le16(SMB311_SALT_SIZE);  in build_preauth_ctxt()
744 	get_random_bytes(pneg_ctxt->Salt, SMB311_SALT_SIZE);  in build_preauth_ctxt()
745 	pneg_ctxt->HashAlgorithms = hash_id;  in build_preauth_ctxt()
748 static void build_encrypt_ctxt(struct smb2_encryption_neg_context *pneg_ctxt,  in build_encrypt_ctxt()  argument
751 	pneg_ctxt->ContextType = SMB2_ENCRYPTION_CAPABILITIES;  in build_encrypt_ctxt()
752 	pneg_ctxt->DataLength = cpu_to_le16(4);  in build_encrypt_ctxt()
753 	pneg_ctxt->Reserved = cpu_to_le32(0);  in build_encrypt_ctxt()
754 	pneg_ctxt->CipherCount = cpu_to_le16(1);  in build_encrypt_ctxt()
755 	pneg_ctxt->Ciphers[0] = cipher_type;  in build_encrypt_ctxt()
758 static void build_compression_ctxt(struct smb2_compression_capabilities_context *pneg_ctxt,  in build_compression_ctxt()  argument
761 	pneg_ctxt->ContextType = SMB2_COMPRESSION_CAPABILITIES;  in build_compression_ctxt()
762 	pneg_ctxt->DataLength =  in build_compression_ctxt()
765 	pneg_ctxt->Reserved = cpu_to_le32(0);  in build_compression_ctxt()
766 	pneg_ctxt->CompressionAlgorithmCount = cpu_to_le16(1);  in build_compression_ctxt()
767 	pneg_ctxt->Flags = cpu_to_le32(0);  in build_compression_ctxt()
768 	pneg_ctxt->CompressionAlgorithms[0] = comp_algo;  in build_compression_ctxt()
771 static void build_sign_cap_ctxt(struct smb2_signing_capabilities *pneg_ctxt,  in build_sign_cap_ctxt()  argument
774 	pneg_ctxt->ContextType = SMB2_SIGNING_CAPABILITIES;  in build_sign_cap_ctxt()
775 	pneg_ctxt->DataLength =  in build_sign_cap_ctxt()
778 	pneg_ctxt->Reserved = cpu_to_le32(0);  in build_sign_cap_ctxt()
779 	pneg_ctxt->SigningAlgorithmCount = cpu_to_le16(1);  in build_sign_cap_ctxt()
780 	pneg_ctxt->SigningAlgorithms[0] = sign_algo;  in build_sign_cap_ctxt()
783 static void build_posix_ctxt(struct smb2_posix_neg_context *pneg_ctxt)  in build_posix_ctxt()  argument
785 	pneg_ctxt->ContextType = SMB2_POSIX_EXTENSIONS_AVAILABLE;  in build_posix_ctxt()
786 	pneg_ctxt->DataLength = cpu_to_le16(POSIX_CTXT_DATA_LEN);  in build_posix_ctxt()
788 	pneg_ctxt->Name[0] = 0x93;  in build_posix_ctxt()
789 	pneg_ctxt->Name[1] = 0xAD;  in build_posix_ctxt()
790 	pneg_ctxt->Name[2] = 0x25;  in build_posix_ctxt()
791 	pneg_ctxt->Name[3] = 0x50;  in build_posix_ctxt()
792 	pneg_ctxt->Name[4] = 0x9C;  in build_posix_ctxt()
793 	pneg_ctxt->Name[5] = 0xB4;  in build_posix_ctxt()
794 	pneg_ctxt->Name[6] = 0x11;  in build_posix_ctxt()
795 	pneg_ctxt->Name[7] = 0xE7;  in build_posix_ctxt()
796 	pneg_ctxt->Name[8] = 0xB4;  in build_posix_ctxt()
797 	pneg_ctxt->Name[9] = 0x23;  in build_posix_ctxt()
798 	pneg_ctxt->Name[10] = 0x83;  in build_posix_ctxt()
799 	pneg_ctxt->Name[11] = 0xDE;  in build_posix_ctxt()
800 	pneg_ctxt->Name[12] = 0x96;  in build_posix_ctxt()
801 	pneg_ctxt->Name[13] = 0x8B;  in build_posix_ctxt()
802 	pneg_ctxt->Name[14] = 0xCD;  in build_posix_ctxt()
803 	pneg_ctxt->Name[15] = 0x7C;  in build_posix_ctxt()
810 	char *pneg_ctxt = (char *)rsp +  in assemble_neg_contexts()  local
817 	build_preauth_ctxt((struct smb2_preauth_neg_context *)pneg_ctxt,  in assemble_neg_contexts()
823 	pneg_ctxt += round_up(sizeof(struct smb2_preauth_neg_context), 8);  in assemble_neg_contexts()
829 		build_encrypt_ctxt((struct smb2_encryption_neg_context *)pneg_ctxt,  in assemble_neg_contexts()
834 		pneg_ctxt +=  in assemble_neg_contexts()
844 		build_compression_ctxt((struct smb2_compression_capabilities_context *)pneg_ctxt,  in assemble_neg_contexts()
849 		pneg_ctxt += round_up(sizeof(struct smb2_compression_capabilities_context) + 2,  in assemble_neg_contexts()
857 		build_posix_ctxt((struct smb2_posix_neg_context *)pneg_ctxt);  in assemble_neg_contexts()
861 		pneg_ctxt += round_up(sizeof(struct smb2_posix_neg_context), 8);  in assemble_neg_contexts()
868 		build_sign_cap_ctxt((struct smb2_signing_capabilities *)pneg_ctxt,  in assemble_neg_contexts()
878 				  struct smb2_preauth_neg_context *pneg_ctxt)  in decode_preauth_ctxt()  argument
882 	if (pneg_ctxt->HashAlgorithms == SMB2_PREAUTH_INTEGRITY_SHA512) {  in decode_preauth_ctxt()
892 				struct smb2_encryption_neg_context *pneg_ctxt,  in decode_encrypt_ctxt()  argument
895 	int cph_cnt = le16_to_cpu(pneg_ctxt->CipherCount);  in decode_encrypt_ctxt()
910 		if (pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES128_GCM ||  in decode_encrypt_ctxt()
911 		    pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES128_CCM ||  in decode_encrypt_ctxt()
912 		    pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES256_CCM ||  in decode_encrypt_ctxt()
913 		    pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES256_GCM) {  in decode_encrypt_ctxt()
915 				    pneg_ctxt->Ciphers[i]);  in decode_encrypt_ctxt()
916 			conn->cipher_type = pneg_ctxt->Ciphers[i];  in decode_encrypt_ctxt()
942 				 struct smb2_compression_capabilities_context *pneg_ctxt)  in decode_compress_ctxt()  argument
948 				 struct smb2_signing_capabilities *pneg_ctxt,  in decode_sign_cap_ctxt()  argument
951 	int sign_algo_cnt = le16_to_cpu(pneg_ctxt->SigningAlgorithmCount);  in decode_sign_cap_ctxt()
963 		if (pneg_ctxt->SigningAlgorithms[i] == SIGNING_ALG_HMAC_SHA256_LE ||  in decode_sign_cap_ctxt()
964 		    pneg_ctxt->SigningAlgorithms[i] == SIGNING_ALG_AES_CMAC_LE) {  in decode_sign_cap_ctxt()
966 				    pneg_ctxt->SigningAlgorithms[i]);  in decode_sign_cap_ctxt()
969 				pneg_ctxt->SigningAlgorithms[i];  in decode_sign_cap_ctxt()