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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni CC: , , , Michael Guralnik , "Edward Srouji" , Patrisious Haddad X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1772113939; l=5534; i=edwards@nvidia.com; s=20251029; h=from:subject:message-id; bh=x/6xGugVmBAXHQNG7mM0BRo08gYmKnmDcTQ+SXaZQq4=; b=WE4DmYVWKnewjRtRI0mA/TCVpXQERuObmvh0PLL34VY757bynzfp6tRK9pAg/wsa4VbuCTEbR 4epq4luTqLxA/8Gnup0sYKhTjLcL3mnhYiXra4YxtEzyS09JFu6Nhrv X-Developer-Key: i=edwards@nvidia.com; a=ed25519; pk=VME+d2WbMZT5AY+AolKh2XIdrnXWUwwzz/XLQ3jXgDM= X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000FCC4:EE_|IA1PR12MB7639:EE_ X-MS-Office365-Filtering-Correlation-Id: 6d542884-3d53-4ea0-d8f0-08de753e6406 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|36860700013|7416014|1800799024|82310400026|921020; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.118.233;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc7edge2.nvidia.com;CAT:NONE;SFS:(13230040)(376014)(36860700013)(7416014)(1800799024)(82310400026)(921020);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 7sx2r/Ew6E6/Pl2s3LyJg0erigD98iehSHo73Kv7RRD20gMWkQMyRmAuGDpF1bqfqcMmwhGVmCHW6SvXatEGBNtFnd4Y42dwtH0QPGVYFIE72flO/jj0nocKX2GbasNekTEJ4rOOguRT49fKFOcfxfiX9ZFWrgf7NQ86mcxcBgX8Ad/i1SV1dlsSKWb2ihh+MGyxtzrkvm3IYtuiX5Al4XD20RRFV5WgX5qSKPazUlXTpCpfZW+InvlQit68BIJTkKJzpZn4c4vKks79rA39hnl7Oh3GzcVMn6eTeu5oK9MV49hcFFJrpwS7JPocNASEuD4zVRz0otPOLp7owEr3BkECHNYhPAxvG0N/k2xb/CY326caaxNFUMyRfx5Wd9qhVBYLD3Iqe/Ggw6cXqztCktmtOFQ1x4tkMmrVHBxMhu7NsN1HoMRPCf+ANp2gGs7Z X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Feb 2026 13:53:15.8825 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 6d542884-3d53-4ea0-d8f0-08de753e6406 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.233];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000FCC4.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR12MB7639 From: Michael Guralnik Allow users to set through netlink, for a specific FRMR pool, the amount of handles that are not aged, and fill the pool to this amount. This allows users to warm-up the FRMR pools to an expected amount of handles with specific attributes that fits their expected usage. Signed-off-by: Michael Guralnik Reviewed-by: Patrisious Haddad Signed-off-by: Edward Srouji --- drivers/infiniband/core/nldev.c | 88 +++++++++++++++++++++++++++++++++++-= ---- include/uapi/rdma/rdma_netlink.h | 1 + 2 files changed, 78 insertions(+), 11 deletions(-) diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nlde= v.c index 8d004b7568b7b48e7103abbf0b7c3fb7acacba4f..0b0f689eadd7643fbe77a5364b8= fefe3d3a60de9 100644 --- a/drivers/infiniband/core/nldev.c +++ b/drivers/infiniband/core/nldev.c @@ -185,6 +185,7 @@ static const struct nla_policy nldev_policy[RDMA_NLDEV_= ATTR_MAX] =3D { [RDMA_NLDEV_ATTR_FRMR_POOL_MAX_IN_USE] =3D { .type =3D NLA_U64 }, [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 }, }; =20 static int put_driver_name_print_type(struct sk_buff *msg, const char *nam= e, @@ -2692,6 +2693,9 @@ static int fill_frmr_pool_entry(struct sk_buff *msg, = struct ib_frmr_pool *pool) if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_FRMR_POOL_IN_USE, pool->in_use, RDMA_NLDEV_ATTR_PAD)) goto err_unlock; + if (nla_put_u32(msg, RDMA_NLDEV_ATTR_FRMR_POOL_PINNED_HANDLES, + pool->pinned_handles)) + goto err_unlock; spin_unlock(&pool->lock); =20 return 0; @@ -2701,6 +2705,54 @@ 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) +{ + if (tb[RDMA_NLDEV_ATTR_FRMR_POOL_KEY_ATS]) + key->ats =3D nla_get_u8(tb[RDMA_NLDEV_ATTR_FRMR_POOL_KEY_ATS]); + + if (tb[RDMA_NLDEV_ATTR_FRMR_POOL_KEY_ACCESS_FLAGS]) + key->access_flags =3D nla_get_u32( + tb[RDMA_NLDEV_ATTR_FRMR_POOL_KEY_ACCESS_FLAGS]); + + if (tb[RDMA_NLDEV_ATTR_FRMR_POOL_KEY_VENDOR_KEY]) + key->vendor_key =3D nla_get_u64( + tb[RDMA_NLDEV_ATTR_FRMR_POOL_KEY_VENDOR_KEY]); + + 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]); +} + +static int nldev_frmr_pools_set_pinned(struct ib_device *device, + struct nlattr *tb[], + struct netlink_ext_ack *extack) +{ + struct nlattr *key_tb[RDMA_NLDEV_ATTR_MAX]; + struct ib_frmr_key key =3D { 0 }; + u32 pinned_handles =3D 0; + int err =3D 0; + + pinned_handles =3D + nla_get_u32(tb[RDMA_NLDEV_ATTR_FRMR_POOL_PINNED_HANDLES]); + + if (!tb[RDMA_NLDEV_ATTR_FRMR_POOL_KEY]) + return -EINVAL; + + err =3D nla_parse_nested(key_tb, RDMA_NLDEV_ATTR_MAX - 1, + tb[RDMA_NLDEV_ATTR_FRMR_POOL_KEY], nldev_policy, + extack); + if (err) + return err; + + nldev_frmr_pools_parse_key(key_tb, &key, extack); + + err =3D ib_frmr_pools_set_pinned(device, &key, pinned_handles); + + return err; +} + static int nldev_frmr_pools_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb) { @@ -2803,32 +2855,46 @@ static int nldev_frmr_pools_get_dumpit(struct sk_bu= ff *skb, static int nldev_frmr_pools_set_doit(struct sk_buff *skb, struct nlmsghdr = *nlh, struct netlink_ext_ack *extack) { - struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; struct ib_device *device; + struct nlattr **tb; u32 aging_period; int err; =20 + tb =3D kcalloc(RDMA_NLDEV_ATTR_MAX, sizeof(*tb), GFP_KERNEL); + if (!tb) + return -ENOMEM; + err =3D nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, nldev_policy, extack); if (err) - return err; - - if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX]) - return -EINVAL; + goto free_tb; =20 - if (!tb[RDMA_NLDEV_ATTR_FRMR_POOLS_AGING_PERIOD]) - return -EINVAL; + if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX]) { + err =3D -EINVAL; + goto free_tb; + } =20 device =3D ib_device_get_by_index( sock_net(skb->sk), nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX])); - if (!device) - return -EINVAL; + if (!device) { + err =3D -EINVAL; + goto free_tb; + } =20 - aging_period =3D nla_get_u32(tb[RDMA_NLDEV_ATTR_FRMR_POOLS_AGING_PERIOD]); + if (tb[RDMA_NLDEV_ATTR_FRMR_POOLS_AGING_PERIOD]) { + aging_period =3D nla_get_u32( + tb[RDMA_NLDEV_ATTR_FRMR_POOLS_AGING_PERIOD]); + err =3D ib_frmr_pools_set_aging_period(device, aging_period); + goto done; + } =20 - err =3D ib_frmr_pools_set_aging_period(device, aging_period); + if (tb[RDMA_NLDEV_ATTR_FRMR_POOL_PINNED_HANDLES]) + err =3D nldev_frmr_pools_set_pinned(device, tb, extack); =20 +done: ib_device_put(device); +free_tb: + kfree(tb); return err; } =20 diff --git a/include/uapi/rdma/rdma_netlink.h b/include/uapi/rdma/rdma_netl= ink.h index f9c295caf2b1625e3636d4279a539d481fdeb4ac..39178df104f01d19a8135554ade= ce66be881fd15 100644 --- a/include/uapi/rdma/rdma_netlink.h +++ b/include/uapi/rdma/rdma_netlink.h @@ -601,6 +601,7 @@ enum rdma_nldev_attr { RDMA_NLDEV_ATTR_FRMR_POOL_MAX_IN_USE, /* u64 */ RDMA_NLDEV_ATTR_FRMR_POOL_IN_USE, /* u64 */ RDMA_NLDEV_ATTR_FRMR_POOLS_AGING_PERIOD, /* u32 */ + RDMA_NLDEV_ATTR_FRMR_POOL_PINNED_HANDLES, /* u32 */ =20 /* * Always the end --=20 2.49.0