From: Wen Gu <guwen@linux.alibaba.com>
To: wintera@linux.ibm.com, twinkler@linux.ibm.com, hca@linux.ibm.com,
gor@linux.ibm.com, agordeev@linux.ibm.com, davem@davemloft.net,
edumazet@google.com, kuba@kernel.org, pabeni@redhat.com,
wenjia@linux.ibm.com, jaka@linux.ibm.com
Cc: borntraeger@linux.ibm.com, svens@linux.ibm.com,
alibuda@linux.alibaba.com, tonylu@linux.alibaba.com,
guwen@linux.alibaba.com, linux-kernel@vger.kernel.org,
linux-s390@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH net-next v7 06/11] net/smc: ignore loopback-ism when dumping SMC-D devices
Date: Sun, 28 Apr 2024 14:07:33 +0800 [thread overview]
Message-ID: <20240428060738.60843-7-guwen@linux.alibaba.com> (raw)
In-Reply-To: <20240428060738.60843-1-guwen@linux.alibaba.com>
Since loopback-ism is not a PCI device, the PCI information fed back by
smc_nl_handle_smcd_dev() does not apply to loopback-ism. So currently
ignore loopback-ism when dumping SMC-D devices. The netlink function of
loopback-ism will be refactored when SMC netlink interface is updated.
Link: https://lore.kernel.org/r/caab067b-f5c3-490f-9259-262624c236b4@linux.ibm.com/
Signed-off-by: Wen Gu <guwen@linux.alibaba.com>
Reviewed-by: Wenjia Zhang <wenjia@linux.ibm.com>
Reviewed-and-tested-by: Jan Karcher <jaka@linux.ibm.com>
---
net/smc/smc_ism.c | 2 ++
net/smc/smc_ism.h | 5 +++++
2 files changed, 7 insertions(+)
diff --git a/net/smc/smc_ism.c b/net/smc/smc_ism.c
index 36459a3c739d..188fd28423c2 100644
--- a/net/smc/smc_ism.c
+++ b/net/smc/smc_ism.c
@@ -322,6 +322,8 @@ static void smc_nl_prep_smcd_dev(struct smcd_dev_list *dev_list,
list_for_each_entry(smcd, &dev_list->list, list) {
if (num < snum)
goto next;
+ if (smc_ism_is_loopback(smcd))
+ goto next;
if (smc_nl_handle_smcd_dev(smcd, skb, cb))
goto errout;
next:
diff --git a/net/smc/smc_ism.h b/net/smc/smc_ism.h
index 165cd013404b..322973527c61 100644
--- a/net/smc/smc_ism.h
+++ b/net/smc/smc_ism.h
@@ -84,4 +84,9 @@ static inline bool smc_ism_is_emulated(struct smcd_dev *smcd)
return __smc_ism_is_emulated(chid);
}
+static inline bool smc_ism_is_loopback(struct smcd_dev *smcd)
+{
+ return (smcd->ops->get_chid(smcd) == 0xFFFF);
+}
+
#endif
--
2.32.0.3.g01195cf9f
next prev parent reply other threads:[~2024-04-28 6:07 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-28 6:07 [PATCH net-next v7 00/11] net/smc: SMC intra-OS shortcut with loopback-ism Wen Gu
2024-04-28 6:07 ` [PATCH net-next v7 01/11] net/smc: decouple ism_client from SMC-D DMB registration Wen Gu
2024-04-28 6:07 ` [PATCH net-next v7 02/11] net/smc: introduce loopback-ism for SMC intra-OS shortcut Wen Gu
2024-04-28 6:07 ` [PATCH net-next v7 03/11] net/smc: implement ID-related operations of loopback-ism Wen Gu
2024-04-28 6:07 ` [PATCH net-next v7 04/11] net/smc: implement DMB-related " Wen Gu
2024-04-28 6:07 ` [PATCH net-next v7 05/11] net/smc: mark optional smcd_ops and check for support when called Wen Gu
2024-04-28 6:07 ` Wen Gu [this message]
2024-04-28 6:07 ` [PATCH net-next v7 07/11] net/smc: register loopback-ism into SMC-D device list Wen Gu
2024-04-28 6:07 ` [PATCH net-next v7 08/11] net/smc: add operations to merge sndbuf with peer DMB Wen Gu
2024-04-28 6:07 ` [PATCH net-next v7 09/11] net/smc: {at|de}tach sndbuf to peer DMB if supported Wen Gu
2024-04-28 6:07 ` [PATCH net-next v7 10/11] net/smc: adapt cursor update when sndbuf and peer DMB are merged Wen Gu
2024-04-28 6:07 ` [PATCH net-next v7 11/11] net/smc: implement DMB-merged operations of loopback-ism Wen Gu
2024-04-28 15:49 ` [PATCH net-next v7 00/11] net/smc: SMC intra-OS shortcut with loopback-ism Cong Wang
2024-05-07 14:34 ` Wen Gu
2024-05-07 16:10 ` Cong Wang
2024-05-08 3:48 ` Wen Gu
2024-05-08 6:39 ` Tony Lu
2024-04-30 11:40 ` patchwork-bot+netdevbpf
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