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a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:date:from:in-reply-to:message-id :mime-version:references:subject:to; s=pp1; bh=mFg3LtSxA9ofG+p5E O8CHIVS6YpMggqXCWa+vqK4aI0=; b=ZArM3lLtJaw7q9SdGfMEzwzjSuUiSuqHI JX5iVeE+qpBr98VdR3yPDzMIQsbzn2To/hI5GVncfm761ePdNelwyh7i4X0Pl3Vy vPBLq+Rrskf7ldGpRROdZfmBJSxxiBc6ys61sKwXlfLCDVVntv4NCpbWLtCMbK2q kcge7s4bamWfIq31lAHVqKnPIYN/22FLAGF1UG19svNm85w8P9iMtr5zQsCFULV1 ZUC6Ec0FuA4KthTtzZ8VGZQHzNTBWJSCwJiiL4hmAofbwfSWrMAbHot1sUTH0631 aAZIjMjHrZr//IDa4jfP4MsFpwi4RKojnlFIuUo03IPdZngKIYRuQ== From: Stefan Berger To: qemu-devel@nongnu.org Cc: berrange@redhat.com, marcandre.lureau@gmail.com, Stefan Berger Subject: [PATCH v3 1/2] tpm: Use new ptm_cap_n structure for PTM_GET_CAPABILITY Date: Wed, 16 Oct 2024 10:57:07 -0400 Message-ID: <20241016145708.1166471-2-stefanb@linux.ibm.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241016145708.1166471-1-stefanb@linux.ibm.com> References: <20241016145708.1166471-1-stefanb@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-GUID: nND04EKZDZnT0Nvc4THvd6Cmr0WXNJm3 X-Proofpoint-ORIG-GUID: 09AOazQYlJYrDWn5BZJijvLq4ccXvqQ8 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.62.30 definitions=2024-10-15_01,2024-10-11_01,2024-09-30_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 impostorscore=0 phishscore=0 clxscore=1015 lowpriorityscore=0 malwarescore=0 mlxlogscore=999 suspectscore=0 adultscore=0 spamscore=0 priorityscore=1501 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2410160092 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=148.163.158.5; envelope-from=stefanb@linux.ibm.com; helo=mx0b-001b2d01.pphosted.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @ibm.com) X-ZM-MESSAGEID: 1729090712731116600 Content-Type: text/plain; charset="utf-8" Use the new ptm_cap_n structure for getting the PTM_GET_CAPABILITY response from swtpm. Previously only 17 bits could possibly have been set in ptm_cap (=3Duint64_t) in big endian order and those bits are now found in the 2nd 32bit word in the response in the caps field. This data structure makes it now clear that the 1st 32bit word carries the tpm_result like all the other response structures of all other commands do. Signed-off-by: Stefan Berger --- backends/tpm/tpm_emulator.c | 14 ++++++++------ backends/tpm/tpm_ioctl.h | 13 ++++++++++++- backends/tpm/trace-events | 2 +- 3 files changed, 21 insertions(+), 8 deletions(-) diff --git a/backends/tpm/tpm_emulator.c b/backends/tpm/tpm_emulator.c index 5a8fba9bde..b0e2fb3fc7 100644 --- a/backends/tpm/tpm_emulator.c +++ b/backends/tpm/tpm_emulator.c @@ -72,7 +72,7 @@ struct TPMEmulator { CharBackend ctrl_chr; QIOChannel *data_ioc; TPMVersion tpm_version; - ptm_cap caps; /* capabilities of the TPM */ + uint32_t caps; /* capabilities of the TPM */ uint8_t cur_locty_number; /* last set locality */ Error *migration_blocker; =20 @@ -239,13 +239,15 @@ static void tpm_emulator_handle_request(TPMBackend *t= b, TPMBackendCmd *cmd, =20 static int tpm_emulator_probe_caps(TPMEmulator *tpm_emu) { + ptm_cap_n cap_n; + if (tpm_emulator_ctrlcmd(tpm_emu, CMD_GET_CAPABILITY, - &tpm_emu->caps, 0, sizeof(tpm_emu->caps)) < 0= ) { + &cap_n, 0, sizeof(cap_n)) < 0) { error_report("tpm-emulator: probing failed : %s", strerror(errno)); return -1; } =20 - tpm_emu->caps =3D be64_to_cpu(tpm_emu->caps); + tpm_emu->caps =3D be32_to_cpu(cap_n.u.resp.caps); =20 trace_tpm_emulator_probe_caps(tpm_emu->caps); =20 @@ -254,7 +256,7 @@ static int tpm_emulator_probe_caps(TPMEmulator *tpm_emu) =20 static int tpm_emulator_check_caps(TPMEmulator *tpm_emu) { - ptm_cap caps =3D 0; + uint32_t caps =3D 0; const char *tpm =3D NULL; =20 /* check for min. required capabilities */ @@ -527,8 +529,8 @@ static size_t tpm_emulator_get_buffer_size(TPMBackend *= tb) static int tpm_emulator_block_migration(TPMEmulator *tpm_emu) { Error *err =3D NULL; - ptm_cap caps =3D PTM_CAP_GET_STATEBLOB | PTM_CAP_SET_STATEBLOB | - PTM_CAP_STOP; + uint32_t caps =3D PTM_CAP_GET_STATEBLOB | PTM_CAP_SET_STATEBLOB | + PTM_CAP_STOP; =20 if (!TPM_EMULATOR_IMPLEMENTS_ALL_CAPS(tpm_emu, caps)) { error_setg(&tpm_emu->migration_blocker, diff --git a/backends/tpm/tpm_ioctl.h b/backends/tpm/tpm_ioctl.h index 1933ab6855..ee2dd15d35 100644 --- a/backends/tpm/tpm_ioctl.h +++ b/backends/tpm/tpm_ioctl.h @@ -29,6 +29,16 @@ =20 typedef uint32_t ptm_res; =20 +/* PTM_GET_CAPABILITY: Get supported capabilities (ioctl's) */ +struct ptm_cap_n { + union { + struct { + ptm_res tpm_result; /* will always be TPM_SUCCESS (0) */ + uint32_t caps; + } resp; /* response */ + } u; +}; + /* PTM_GET_TPMESTABLISHED: get the establishment bit */ struct ptm_est { union { @@ -242,7 +252,8 @@ struct ptm_lockstorage { } u; }; =20 -typedef uint64_t ptm_cap; +typedef uint64_t ptm_cap; /* CUSE-only; use ptm_cap_n otherwise */ +typedef struct ptm_cap_n ptm_cap_n; typedef struct ptm_est ptm_est; typedef struct ptm_reset_est ptm_reset_est; typedef struct ptm_loc ptm_loc; diff --git a/backends/tpm/trace-events b/backends/tpm/trace-events index cb5cfa6510..05e30533ce 100644 --- a/backends/tpm/trace-events +++ b/backends/tpm/trace-events @@ -16,7 +16,7 @@ tpm_util_show_buffer_content(const char *buf) "%s" # tpm_emulator.c tpm_emulator_set_locality(uint8_t locty) "setting locality to %d" tpm_emulator_handle_request(void) "processing TPM command" -tpm_emulator_probe_caps(uint64_t caps) "capabilities: 0x%"PRIx64 +tpm_emulator_probe_caps(uint32_t caps) "capabilities: 0x%x" tpm_emulator_set_buffer_size(uint32_t buffersize, uint32_t minsize, uint32= _t maxsize) "buffer size: %u, min: %u, max: %u" tpm_emulator_startup_tpm_resume(bool is_resume, size_t buffersize) "is_res= ume: %d, buffer size: %zu" tpm_emulator_get_tpm_established_flag(uint8_t flag) "got established flag:= %d" --=20 2.47.0