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Wythe" , Dust Li , Sidraya Jayagond , Wenjia Zhang , David Miller , Jakub Kicinski , Paolo Abeni , Eric Dumazet , Andrew Lunn Cc: Julian Ruess , Aswin Karuvally , Halil Pasic , Mahanta Jambigi , Tony Lu , Wen Gu , linux-rdma@vger.kernel.org, netdev@vger.kernel.org, linux-s390@vger.kernel.org, Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Simon Horman , Eric Biggers , Ard Biesheuvel , Herbert Xu , Harald Freudenberger , Konstantin Shkolnyy , Dan Williams , Dave Jiang , Jonathan Cameron , Shannon Nelson , Geert Uytterhoeven , Jason Gunthorpe Subject: [PATCH net-next v3 12/14] dibs: Move query_remote_gid() to dibs_dev_ops Date: Thu, 18 Sep 2025 13:04:58 +0200 Message-ID: <20250918110500.1731261-13-wintera@linux.ibm.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250918110500.1731261-1-wintera@linux.ibm.com> References: <20250918110500.1731261-1-wintera@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: _HQf8UtuKucVf3zpJ8p_N81p39OhLjCL X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwOTE2MDIwNCBTYWx0ZWRfX1Vgoi/vCx/aT L8BvPoOykrhsQ2Rh6WW14rBbXTiko1V2TV63gZwbiDiqaT746M7xzUsVEwLXO0YMGh8ZyVZ1ZTT TPnhBnG35FaZO7uJ36BvHsrZFfgdzt4dXxKb5O9cMl/PWhEHfwQZid0l5eEt5ANH4FMg1MYKo3d Z/wpBQ+r9nuiE+Z4ZfyPvIPnRyRsYJRjEATOBmJ+qt8qUAu1GA2k5PX36dflMzUj4Id/4D2GcdB kBpBBEG3MpMVTSDX/b2SvyumTQRMy2p/h1pFSK8vciBV3SMgsF2L2kDgtuLvO9PNDOo6Q9+zLhd a58i8c07NH8ws+tpbH/3CXmpA+FbQx1Ft8NOfmMb5CYl8U+/BWpinCEC8GvG3l52fvHzLsoS0s6 kb48zQf4 X-Authority-Analysis: v=2.4 cv=R8oDGcRX c=1 sm=1 tr=0 ts=68cbe762 cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=yJojWOMRYYMA:10 a=VnNF1IyMAAAA:8 a=--91sv9dLteaDJql628A:9 X-Proofpoint-GUID: Loei-NkDL3t4Plk0Zg8z5t8n2DxqAasG X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1117,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-09-17_01,2025-09-18_02,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 suspectscore=0 malwarescore=0 bulkscore=0 spamscore=0 adultscore=0 impostorscore=0 priorityscore=1501 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2509160204 Provide the dibs_dev_ops->query_remote_gid() in ism and dibs_loopback dibs_devices. And call it in smc dibs_client. Reviewed-by: Julian Ruess Signed-off-by: Alexandra Winter --- drivers/dibs/dibs_loopback.c | 10 +++++++++ drivers/s390/net/ism_drv.c | 41 ++++++++++++++++-------------------- include/linux/dibs.h | 14 ++++++++++++ include/net/smc.h | 2 -- net/smc/smc_ism.c | 8 +++++-- net/smc/smc_loopback.c | 13 ------------ 6 files changed, 48 insertions(+), 40 deletions(-) diff --git a/drivers/dibs/dibs_loopback.c b/drivers/dibs/dibs_loopback.c index d7e6fa5e90f3..6b53e626a6d1 100644 --- a/drivers/dibs/dibs_loopback.c +++ b/drivers/dibs/dibs_loopback.c @@ -24,8 +24,18 @@ static u16 dibs_lo_get_fabric_id(struct dibs_dev *dibs) return DIBS_LOOPBACK_FABRIC; } +static int dibs_lo_query_rgid(struct dibs_dev *dibs, const uuid_t *rgid, + u32 vid_valid, u32 vid) +{ + /* rgid should be the same as lgid */ + if (!uuid_equal(rgid, &dibs->gid)) + return -ENETUNREACH; + return 0; +} + static const struct dibs_dev_ops dibs_lo_ops = { .get_fabric_id = dibs_lo_get_fabric_id, + .query_remote_gid = dibs_lo_query_rgid, }; static int dibs_lo_dev_probe(void) diff --git a/drivers/s390/net/ism_drv.c b/drivers/s390/net/ism_drv.c index ed4c28ca355b..121b3a2be760 100644 --- a/drivers/s390/net/ism_drv.c +++ b/drivers/s390/net/ism_drv.c @@ -291,6 +291,23 @@ static int ism_read_local_gid(struct dibs_dev *dibs) return ret; } +static int ism_query_rgid(struct dibs_dev *dibs, const uuid_t *rgid, + u32 vid_valid, u32 vid) +{ + struct ism_dev *ism = dibs->drv_priv; + union ism_query_rgid cmd; + + memset(&cmd, 0, sizeof(cmd)); + cmd.request.hdr.cmd = ISM_QUERY_RGID; + cmd.request.hdr.len = sizeof(cmd.request); + + memcpy(&cmd.request.rgid, rgid, sizeof(cmd.request.rgid)); + cmd.request.vlan_valid = vid_valid; + cmd.request.vlan_id = vid; + + return ism_cmd(ism, &cmd); +} + static void ism_free_dmb(struct ism_dev *ism, struct ism_dmb *dmb) { clear_bit(dmb->sba_idx, ism->sba_bitmap); @@ -537,6 +554,7 @@ static irqreturn_t ism_handle_irq(int irq, void *data) static const struct dibs_dev_ops ism_ops = { .get_fabric_id = ism_get_chid, + .query_remote_gid = ism_query_rgid, .add_vlan_id = ism_add_vlan_id, .del_vlan_id = ism_del_vlan_id, }; @@ -748,28 +766,6 @@ module_exit(ism_exit); /*************************** SMC-D Implementation *****************************/ #if IS_ENABLED(CONFIG_SMC) -static int ism_query_rgid(struct ism_dev *ism, u64 rgid, u32 vid_valid, - u32 vid) -{ - union ism_query_rgid cmd; - - memset(&cmd, 0, sizeof(cmd)); - cmd.request.hdr.cmd = ISM_QUERY_RGID; - cmd.request.hdr.len = sizeof(cmd.request); - - cmd.request.rgid = rgid; - cmd.request.vlan_valid = vid_valid; - cmd.request.vlan_id = vid; - - return ism_cmd(ism, &cmd); -} - -static int smcd_query_rgid(struct smcd_dev *smcd, struct smcd_gid *rgid, - u32 vid_valid, u32 vid) -{ - return ism_query_rgid(smcd->priv, rgid->gid, vid_valid, vid); -} - static int smcd_register_dmb(struct smcd_dev *smcd, struct smcd_dmb *dmb, void *client) { @@ -813,7 +809,6 @@ static int smcd_move(struct smcd_dev *smcd, u64 dmb_tok, unsigned int idx, } static const struct smcd_ops ism_smcd_ops = { - .query_remote_gid = smcd_query_rgid, .register_dmb = smcd_register_dmb, .unregister_dmb = smcd_unregister_dmb, .signal_event = smcd_signal_ieq, diff --git a/include/linux/dibs.h b/include/linux/dibs.h index 166148fb8d76..c75a40fe3039 100644 --- a/include/linux/dibs.h +++ b/include/linux/dibs.h @@ -133,6 +133,20 @@ struct dibs_dev_ops { * Return: 2 byte dibs fabric id */ u16 (*get_fabric_id)(struct dibs_dev *dev); + /** + * query_remote_gid() + * @dev: local dibs device + * @rgid: gid of remote dibs device + * @vid_valid: if zero, vid will be ignored; + * deprecated, ignored if device does not support vlan + * @vid: VLAN id; deprecated, ignored if device does not support vlan + * + * Query whether a remote dibs device is reachable via this local device + * and this vlan id. + * Return: 0 if remote gid is reachable. + */ + int (*query_remote_gid)(struct dibs_dev *dev, const uuid_t *rgid, + u32 vid_valid, u32 vid); /** * add_vlan_id() - add dibs device to vlan (optional, deprecated) * @dev: dibs device diff --git a/include/net/smc.h b/include/net/smc.h index 51b4aefc106a..5bd135fb4d49 100644 --- a/include/net/smc.h +++ b/include/net/smc.h @@ -53,8 +53,6 @@ struct smcd_gid { }; struct smcd_ops { - int (*query_remote_gid)(struct smcd_dev *dev, struct smcd_gid *rgid, - u32 vid_valid, u32 vid); int (*register_dmb)(struct smcd_dev *dev, struct smcd_dmb *dmb, void *client); int (*unregister_dmb)(struct smcd_dev *dev, struct smcd_dmb *dmb); diff --git a/net/smc/smc_ism.c b/net/smc/smc_ism.c index 5118441bed18..d20d00b46825 100644 --- a/net/smc/smc_ism.c +++ b/net/smc/smc_ism.c @@ -77,8 +77,12 @@ static void smc_ism_create_system_eid(void) int smc_ism_cantalk(struct smcd_gid *peer_gid, unsigned short vlan_id, struct smcd_dev *smcd) { - return smcd->ops->query_remote_gid(smcd, peer_gid, vlan_id ? 1 : 0, - vlan_id); + struct dibs_dev *dibs = smcd->dibs; + uuid_t ism_rgid; + + copy_to_dibsgid(&ism_rgid, peer_gid); + return dibs->ops->query_remote_gid(dibs, &ism_rgid, vlan_id ? 1 : 0, + vlan_id); } void smc_ism_get_system_eid(u8 **eid) diff --git a/net/smc/smc_loopback.c b/net/smc/smc_loopback.c index 982a19430313..52cba01cb209 100644 --- a/net/smc/smc_loopback.c +++ b/net/smc/smc_loopback.c @@ -25,18 +25,6 @@ static struct smc_lo_dev *lo_dev; -static int smc_lo_query_rgid(struct smcd_dev *smcd, struct smcd_gid *rgid, - u32 vid_valid, u32 vid) -{ - uuid_t temp; - - copy_to_dibsgid(&temp, rgid); - /* rgid should be the same as lgid */ - if (!uuid_equal(&temp, &smcd->dibs->gid)) - return -ENETUNREACH; - return 0; -} - static int smc_lo_register_dmb(struct smcd_dev *smcd, struct smcd_dmb *dmb, void *client_priv) { @@ -235,7 +223,6 @@ static int smc_lo_move_data(struct smcd_dev *smcd, u64 dmb_tok, } static const struct smcd_ops lo_ops = { - .query_remote_gid = smc_lo_query_rgid, .register_dmb = smc_lo_register_dmb, .unregister_dmb = smc_lo_unregister_dmb, .support_dmb_nocopy = smc_lo_support_dmb_nocopy, -- 2.48.1