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Mon, 2 Feb 2026 08:01:01 -0800 From: Edward Srouji Date: Mon, 2 Feb 2026 18:00:03 +0200 Subject: [PATCH rdma-next v3 11/11] RDMA/nldev: Expose kernel-internal FRMR pools in netlink Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-ID: <20260202-frmr_pools-v3-11-b8405ed9deba@nvidia.com> References: <20260202-frmr_pools-v3-0-b8405ed9deba@nvidia.com> In-Reply-To: <20260202-frmr_pools-v3-0-b8405ed9deba@nvidia.com> To: Jason Gunthorpe , Leon Romanovsky , "Saeed Mahameed" , Tariq Toukan , Mark Bloch , Andrew Lunn , "David S. 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Signed-off-by: Michael Guralnik Reviewed-by: Patrisious Haddad Signed-off-by: Edward Srouji --- drivers/infiniband/core/nldev.c | 28 +++++++++++++++++++++++----- include/uapi/rdma/rdma_netlink.h | 1 + 2 files changed, 24 insertions(+), 5 deletions(-) diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nlde= v.c index 0b0f689eadd7..80b0079f63ae 100644 --- a/drivers/infiniband/core/nldev.c +++ b/drivers/infiniband/core/nldev.c @@ -186,6 +186,7 @@ static const struct nla_policy nldev_policy[RDMA_NLDEV_= ATTR_MAX] =3D { [RDMA_NLDEV_ATTR_FRMR_POOL_IN_USE] =3D { .type =3D NLA_U64 }, [RDMA_NLDEV_ATTR_FRMR_POOLS_AGING_PERIOD] =3D { .type =3D NLA_U32 }, [RDMA_NLDEV_ATTR_FRMR_POOL_PINNED_HANDLES] =3D { .type =3D NLA_U32 }, + [RDMA_NLDEV_ATTR_FRMR_POOL_KEY_KERNEL_VENDOR_KEY] =3D { .type =3D NLA_U64= }, }; =20 static int put_driver_name_print_type(struct sk_buff *msg, const char *nam= e, @@ -2671,6 +2672,12 @@ static int fill_frmr_pool_key(struct sk_buff *msg, s= truct ib_frmr_key *key) key->num_dma_blocks, RDMA_NLDEV_ATTR_PAD)) goto err; =20 + if (key->kernel_vendor_key && + nla_put_u64_64bit(msg, + RDMA_NLDEV_ATTR_FRMR_POOL_KEY_KERNEL_VENDOR_KEY, + key->kernel_vendor_key, RDMA_NLDEV_ATTR_PAD)) + goto err; + nla_nest_end(msg, key_attr); return 0; =20 @@ -2705,9 +2712,9 @@ static int fill_frmr_pool_entry(struct sk_buff *msg, = struct ib_frmr_pool *pool) return -EMSGSIZE; } =20 -static void nldev_frmr_pools_parse_key(struct nlattr *tb[], - struct ib_frmr_key *key, - struct netlink_ext_ack *extack) +static int nldev_frmr_pools_parse_key(struct nlattr *tb[], + struct ib_frmr_key *key, + struct netlink_ext_ack *extack) { if (tb[RDMA_NLDEV_ATTR_FRMR_POOL_KEY_ATS]) key->ats =3D nla_get_u8(tb[RDMA_NLDEV_ATTR_FRMR_POOL_KEY_ATS]); @@ -2723,6 +2730,11 @@ static void nldev_frmr_pools_parse_key(struct nlattr= *tb[], if (tb[RDMA_NLDEV_ATTR_FRMR_POOL_KEY_NUM_DMA_BLOCKS]) key->num_dma_blocks =3D nla_get_u64( tb[RDMA_NLDEV_ATTR_FRMR_POOL_KEY_NUM_DMA_BLOCKS]); + + if (tb[RDMA_NLDEV_ATTR_FRMR_POOL_KEY_KERNEL_VENDOR_KEY]) + return -EINVAL; + + return 0; } =20 static int nldev_frmr_pools_set_pinned(struct ib_device *device, @@ -2746,7 +2758,9 @@ static int nldev_frmr_pools_set_pinned(struct ib_devi= ce *device, if (err) return err; =20 - nldev_frmr_pools_parse_key(key_tb, &key, extack); + err =3D nldev_frmr_pools_parse_key(key_tb, &key, extack); + if (err) + return err; =20 err =3D ib_frmr_pools_set_pinned(device, &key, pinned_handles); =20 @@ -2762,6 +2776,7 @@ static int nldev_frmr_pools_get_dumpit(struct sk_buff= *skb, struct ib_frmr_pool *pool; struct nlattr *table_attr; struct nlattr *entry_attr; + bool show_details =3D false; struct ib_device *device; int start =3D cb->args[0]; struct rb_node *node; @@ -2778,6 +2793,9 @@ static int nldev_frmr_pools_get_dumpit(struct sk_buff= *skb, if (!device) return -EINVAL; =20 + if (tb[RDMA_NLDEV_ATTR_DRIVER_DETAILS]) + show_details =3D nla_get_u8(tb[RDMA_NLDEV_ATTR_DRIVER_DETAILS]); + pools =3D device->frmr_pools; if (!pools) { ib_device_put(device); @@ -2803,7 +2821,7 @@ static int nldev_frmr_pools_get_dumpit(struct sk_buff= *skb, read_lock(&pools->rb_lock); for (node =3D rb_first(&pools->rb_root); node; node =3D rb_next(node)) { pool =3D rb_entry(node, struct ib_frmr_pool, node); - if (pool->key.kernel_vendor_key) + if (pool->key.kernel_vendor_key && !show_details) continue; =20 if (idx < start) { diff --git a/include/uapi/rdma/rdma_netlink.h b/include/uapi/rdma/rdma_netl= ink.h index 39178df104f0..aac9782ddc09 100644 --- a/include/uapi/rdma/rdma_netlink.h +++ b/include/uapi/rdma/rdma_netlink.h @@ -602,6 +602,7 @@ enum rdma_nldev_attr { RDMA_NLDEV_ATTR_FRMR_POOL_IN_USE, /* u64 */ RDMA_NLDEV_ATTR_FRMR_POOLS_AGING_PERIOD, /* u32 */ RDMA_NLDEV_ATTR_FRMR_POOL_PINNED_HANDLES, /* u32 */ + RDMA_NLDEV_ATTR_FRMR_POOL_KEY_KERNEL_VENDOR_KEY, /* u64 */ =20 /* * Always the end --=20 2.47.1