From: Wen Gu <guwen@linux.alibaba.com> mainline inclusion from mainline-v6.10-rc1 commit c8df2d449f645f90a67aaa05a617e6e86c3f1c5e category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/IACM52 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i... -------------------------------- 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> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.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 -- 2.34.1