From 61a8118f60e9dde64be4f3a6e07c15014a8bfbd2 Mon Sep 17 00:00:00 2001 From: Chandramohan Akula Date: Tue, 18 Jul 2023 22:02:57 -0700 Subject: [PATCH] RDMA/bnxt_re: Add a new uapi for driver notification Add driver notify uapi for application notifying the driver about the doorbell FIFO congestion. Link: https://lore.kernel.org/r/1689742977-9128-8-git-send-email-selvin.xavier@broadcom.com Signed-off-by: Chandramohan Akula Signed-off-by: Selvin Xavier Signed-off-by: Jason Gunthorpe --- drivers/infiniband/hw/bnxt_re/ib_verbs.c | 15 +++++++++++++++ include/uapi/rdma/bnxt_re-abi.h | 4 ++++ 2 files changed, 19 insertions(+) diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.c b/drivers/infiniband/hw/bnxt_re/ib_verbs.c index 0703163..ec4d163 100644 --- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c +++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c @@ -4183,6 +4183,15 @@ void bnxt_re_mmap_free(struct rdma_user_mmap_entry *rdma_entry) kfree(bnxt_entry); } +static int UVERBS_HANDLER(BNXT_RE_METHOD_NOTIFY_DRV)(struct uverbs_attr_bundle *attrs) +{ + struct bnxt_re_ucontext *uctx; + + uctx = container_of(ib_uverbs_get_ucontext(attrs), struct bnxt_re_ucontext, ib_uctx); + bnxt_re_pacing_alert(uctx->rdev); + return 0; +} + static int UVERBS_HANDLER(BNXT_RE_METHOD_ALLOC_PAGE)(struct uverbs_attr_bundle *attrs) { struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs, BNXT_RE_ALLOC_PAGE_HANDLE); @@ -4320,7 +4329,13 @@ DECLARE_UVERBS_NAMED_OBJECT(BNXT_RE_OBJECT_ALLOC_PAGE, &UVERBS_METHOD(BNXT_RE_METHOD_ALLOC_PAGE), &UVERBS_METHOD(BNXT_RE_METHOD_DESTROY_PAGE)); +DECLARE_UVERBS_NAMED_METHOD(BNXT_RE_METHOD_NOTIFY_DRV); + +DECLARE_UVERBS_GLOBAL_METHODS(BNXT_RE_OBJECT_NOTIFY_DRV, + &UVERBS_METHOD(BNXT_RE_METHOD_NOTIFY_DRV)); + const struct uapi_definition bnxt_re_uapi_defs[] = { UAPI_DEF_CHAIN_OBJ_TREE_NAMED(BNXT_RE_OBJECT_ALLOC_PAGE), + UAPI_DEF_CHAIN_OBJ_TREE_NAMED(BNXT_RE_OBJECT_NOTIFY_DRV), {} }; diff --git a/include/uapi/rdma/bnxt_re-abi.h b/include/uapi/rdma/bnxt_re-abi.h index 78a324f..6e7c67a 100644 --- a/include/uapi/rdma/bnxt_re-abi.h +++ b/include/uapi/rdma/bnxt_re-abi.h @@ -132,6 +132,7 @@ enum bnxt_re_shpg_offt { enum bnxt_re_objects { BNXT_RE_OBJECT_ALLOC_PAGE = (1U << UVERBS_ID_NS_SHIFT), + BNXT_RE_OBJECT_NOTIFY_DRV, }; enum bnxt_re_alloc_page_type { @@ -157,4 +158,7 @@ enum bnxt_re_alloc_page_methods { BNXT_RE_METHOD_DESTROY_PAGE, }; +enum bnxt_re_notify_drv_methods { + BNXT_RE_METHOD_NOTIFY_DRV = (1U << UVERBS_ID_NS_SHIFT), +}; #endif /* __BNXT_RE_UVERBS_ABI_H__*/ -- 2.7.4