From patchwork Tue Nov 19 01:43:55 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Brian Vazquez X-Patchwork-Id: 1197115 X-Patchwork-Delegate: bpf@iogearbox.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=google.com header.i=@google.com header.b="SgxZGNUV"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 47H7sw1rtRz9sPf for ; Tue, 19 Nov 2019 12:44:36 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727407AbfKSBod (ORCPT ); Mon, 18 Nov 2019 20:44:33 -0500 Received: from mail-pf1-f202.google.com ([209.85.210.202]:47941 "EHLO mail-pf1-f202.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727385AbfKSBoc (ORCPT ); Mon, 18 Nov 2019 20:44:32 -0500 Received: by mail-pf1-f202.google.com with SMTP id w16so15570290pfq.14 for ; Mon, 18 Nov 2019 17:44:31 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=+lN+OnV/OGJwrxgrmDkzu2oxVw2ucT8UYsYGvvebriE=; b=SgxZGNUVWYGGXkISad1kgT6U14PAx1pYar/m0xNV/3NNFEf6NzDllpscBgMFeLQ5lF dft6a8iZOTnTvVVsdNOmbswFnRj1d1xZiPgX51/b+cBLvg4HO30UIqKU+r+GXogOfJih PJO8nmNkKWEEd6+fX2TswwINxJ3CNZjMLmZGHqwLIi/2K/oLIpD30/iV7+UXjB6Mt9uM /Qy6ye3RZMM+9nFeLh4kn1mkSH3UTa2EJJOAgCFUSnO7AyWRAC8JZ6gAT27V/rpm6cBH BWi/d6AjaKgOg1F+JHm9Z0QT4jNWQCsBCa1j3H3BZ42KB5ivt4pmacFFdzx/k4c5Ov7I 2wAg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=+lN+OnV/OGJwrxgrmDkzu2oxVw2ucT8UYsYGvvebriE=; b=Q5WGB7OlRLab2Ji7JGp5wZO9C0ptYaQhz4CHWolZIDsovXJyN/QmDcc31dH9LgkJHl 3o3otskfe0h70C0URIdZ07J2ScgdmFbjKP0KmdE6zcKrVuuvx/pFJ0W+meNVgEp/Pss/ ws6imiH1oZ0KqWerhvrD+oI6Iu7YU7YTNvg4lSYzVOz3ckzf+/K9pz3Q+UwuFSZ1dspR u3ew0C2UO8+WuRLIXa4ME6KO1PYrygQ4YsjcMm8NJ8wdoBvIni9TznGHvjGoiLaGe2AO e/g1vebbNf2OWRlVGULUciRgs6xBUXRAIPmkai75SFEjCIiJWwuL3e9KFWQvz5JOOiND qdLQ== X-Gm-Message-State: APjAAAV5tIke6dyBzG9LI/AzwX9yhIUQ2Ol+vbg7BlQANwzUHJmJ40sE D63QFWfLpDE68M1DYvCzO6RlQZb+nY79 X-Google-Smtp-Source: APXvYqyB2Y5/Wmt+HsgSIkvPHaLgzw0qyYa7UcYgcIX8FTmQbpHeFUjIzNWtvmKgynWAz8wtTscL+ylNecL6 X-Received: by 2002:a63:4501:: with SMTP id s1mr2642645pga.5.1574127871391; Mon, 18 Nov 2019 17:44:31 -0800 (PST) Date: Mon, 18 Nov 2019 17:43:55 -0800 In-Reply-To: <20191119014357.98465-1-brianvv@google.com> Message-Id: <20191119014357.98465-8-brianvv@google.com> Mime-Version: 1.0 References: <20191119014357.98465-1-brianvv@google.com> X-Mailer: git-send-email 2.24.0.432.g9d3f5f5b63-goog Subject: [PATCH bpf-next 7/9] libbpf: add libbpf support to batch ops From: Brian Vazquez To: Brian Vazquez , Alexei Starovoitov , Daniel Borkmann , "David S . Miller" Cc: Yonghong Song , Stanislav Fomichev , Petar Penkov , Willem de Bruijn , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, bpf@vger.kernel.org Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Yonghong Song Added four libbpf API functions to support map batch operations: . int bpf_map_delete_batch( ... ) . int bpf_map_lookup_batch( ... ) . int bpf_map_lookup_and_delete_batch( ... ) . int bpf_map_update_batch( ... ) Signed-off-by: Yonghong Song --- tools/lib/bpf/bpf.c | 61 ++++++++++++++++++++++++++++++++++++++++ tools/lib/bpf/bpf.h | 14 +++++++++ tools/lib/bpf/libbpf.map | 4 +++ 3 files changed, 79 insertions(+) diff --git a/tools/lib/bpf/bpf.c b/tools/lib/bpf/bpf.c index 98596e15390fb..9acd9309b47b3 100644 --- a/tools/lib/bpf/bpf.c +++ b/tools/lib/bpf/bpf.c @@ -443,6 +443,67 @@ int bpf_map_freeze(int fd) return sys_bpf(BPF_MAP_FREEZE, &attr, sizeof(attr)); } +static int bpf_map_batch_common(int cmd, int fd, void *in_batch, + void *out_batch, void *keys, void *values, + __u32 *count, __u64 elem_flags, + __u64 flags) +{ + union bpf_attr attr = {}; + int ret; + + memset(&attr, 0, sizeof(attr)); + attr.batch.map_fd = fd; + attr.batch.in_batch = ptr_to_u64(in_batch); + attr.batch.out_batch = ptr_to_u64(out_batch); + attr.batch.keys = ptr_to_u64(keys); + attr.batch.values = ptr_to_u64(values); + if (count) + attr.batch.count = *count; + attr.batch.elem_flags = elem_flags; + attr.batch.flags = flags; + + ret = sys_bpf(cmd, &attr, sizeof(attr)); + if (count) + *count = attr.batch.count; + + return ret; +} + +int bpf_map_delete_batch(int fd, void *in_batch, void *out_batch, __u32 *count, + __u64 elem_flags, __u64 flags) +{ + return bpf_map_batch_common(BPF_MAP_DELETE_BATCH, fd, in_batch, + out_batch, NULL, NULL, count, + elem_flags, flags); +} + +int bpf_map_lookup_batch(int fd, void *in_batch, void *out_batch, void *keys, + void *values, __u32 *count, + __u64 elem_flags, __u64 flags) +{ + return bpf_map_batch_common(BPF_MAP_LOOKUP_BATCH, fd, in_batch, + out_batch, keys, values, count, + elem_flags, flags); +} + +int bpf_map_lookup_and_delete_batch(int fd, void *in_batch, void *out_batch, + void *keys, void *values, + __u32 *count, __u64 elem_flags, + __u64 flags) +{ + return bpf_map_batch_common(BPF_MAP_LOOKUP_AND_DELETE_BATCH, + fd, in_batch, out_batch, keys, values, + count, elem_flags, flags); +} + +int bpf_map_update_batch(int fd, void *keys, void *values, __u32 *count, + __u64 elem_flags, __u64 flags) +{ + return bpf_map_batch_common(BPF_MAP_UPDATE_BATCH, + fd, NULL, NULL, keys, values, + count, elem_flags, flags); +} + int bpf_obj_pin(int fd, const char *pathname) { union bpf_attr attr; diff --git a/tools/lib/bpf/bpf.h b/tools/lib/bpf/bpf.h index 3c791fa8e68e8..3ec63384400f1 100644 --- a/tools/lib/bpf/bpf.h +++ b/tools/lib/bpf/bpf.h @@ -126,6 +126,20 @@ LIBBPF_API int bpf_map_lookup_and_delete_elem(int fd, const void *key, LIBBPF_API int bpf_map_delete_elem(int fd, const void *key); LIBBPF_API int bpf_map_get_next_key(int fd, const void *key, void *next_key); LIBBPF_API int bpf_map_freeze(int fd); +LIBBPF_API int bpf_map_delete_batch(int fd, void *in_batch, void *out_batch, + __u32 *count, __u64 elem_flags, + __u64 flags); +LIBBPF_API int bpf_map_lookup_batch(int fd, void *in_batch, void *out_batch, + void *keys, void *values, __u32 *count, + __u64 elem_flags, __u64 flags); +LIBBPF_API int bpf_map_lookup_and_delete_batch(int fd, void *in_batch, + void *out_batch, void *keys, + void *values, __u32 *count, + __u64 elem_flags, __u64 flags); +LIBBPF_API int bpf_map_update_batch(int fd, void *keys, void *values, + __u32 *count, __u64 elem_flags, + __u64 flags); + LIBBPF_API int bpf_obj_pin(int fd, const char *pathname); LIBBPF_API int bpf_obj_get(const char *pathname); LIBBPF_API int bpf_prog_attach(int prog_fd, int attachable_fd, diff --git a/tools/lib/bpf/libbpf.map b/tools/lib/bpf/libbpf.map index 8ddc2c40e482d..56462fea66f74 100644 --- a/tools/lib/bpf/libbpf.map +++ b/tools/lib/bpf/libbpf.map @@ -207,4 +207,8 @@ LIBBPF_0.0.6 { bpf_program__size; btf__find_by_name_kind; libbpf_find_vmlinux_btf_id; + bpf_map_delete_batch; + bpf_map_lookup_and_delete_batch; + bpf_map_lookup_batch; + bpf_map_update_batch; } LIBBPF_0.0.5;