From patchwork Thu Aug 10 13:15:32 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiri Pirko X-Patchwork-Id: 13349458 X-Patchwork-Delegate: kuba@kernel.org Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B8F9B1E1C1 for ; Thu, 10 Aug 2023 13:15:54 +0000 (UTC) Received: from mail-wm1-x335.google.com (mail-wm1-x335.google.com [IPv6:2a00:1450:4864:20::335]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D58B310E9 for ; Thu, 10 Aug 2023 06:15:52 -0700 (PDT) Received: by mail-wm1-x335.google.com with SMTP id 5b1f17b1804b1-3fe490c05c9so11703855e9.0 for ; Thu, 10 Aug 2023 06:15:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=resnulli-us.20221208.gappssmtp.com; s=20221208; t=1691673351; x=1692278151; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=eTTNtyVdQ54Vp2keCdE/XH3tw/qXv7u3Z2Jlwnps83E=; b=xdJ/tOjNS9RZ9m0xbbPvTkCLj5Pg2A+A5uN19jvkaniFo+Vqssr/xXSfBCw8DNxqvg d+KpyU03wFU2yH7XZpRncYIVTk1R7z9l1NXji7HZLqhaf+cLXMqgy9WyasGqWMeHBzGp OEqTEFtNC1mywQc+y6Y7lAaVaRSr5MW4n59/W+tFi2XFaV5Oq3h7HGp5MwQVV5ciQf8E YF7Fth4BP8SR8dxgTVN89sXtkF4xZN0m4okivgYQ+C5wpvQTKrBCGkFbZL4dUsSSEvlN 1p/1QKRh7DXrugrWInjrM5HKKNMA4FissktrIHHbdWjdOvyoal3Zm5FDfd6/5yuNYBjo DFsA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691673351; x=1692278151; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=eTTNtyVdQ54Vp2keCdE/XH3tw/qXv7u3Z2Jlwnps83E=; b=VqNR9qo0NRVswAb1taUaqBhejy8tG/NJY+Nw5dbrL83S891umuD3UmAjBKK34MfA7S VtKISkhlh1nUH8ONotGNZa9XTBHiEeIVBT58S+M5hdi2AZapGZSXR45urLGRlBs8ql6V rbqvYJIkBh37FXhJSTYA3Y9SWaWd93umuji9hb+R32VwNPKHduhHnmsUPDx5UC1mJ5Vr BMbCnZn8nT8fA7OplEhMpYaskYOJMWpabRBZ/siH07JEY0Yd20y6/sViJkAW6MDa5CAr q5iuXJjaD04MUvZ4c0ieyxDyiJX92ka6JrtL8dT5AzFDcXYs0YMaKcGWmN6T8JO0jh9z nNAw== X-Gm-Message-State: AOJu0YzivxZeEGMuArwnVM5w+WYekRhK+/8kLyLp9njfkjq3OC8fXQ7c DLuOfPXdwntPDmX6y5zeNcAX4K8670K2egrXdZg1yQ== X-Google-Smtp-Source: AGHT+IFHf9wwVQbzzXB2jIPhesQ7otCSFUFn9AtpWFLvY72ZbXQ/lUQt1VP61qMzjdqMxioweokLvw== X-Received: by 2002:adf:f384:0:b0:317:de66:259b with SMTP id m4-20020adff384000000b00317de66259bmr1791965wro.15.1691673351376; Thu, 10 Aug 2023 06:15:51 -0700 (PDT) Received: from localhost ([212.23.236.67]) by smtp.gmail.com with ESMTPSA id n5-20020a05600c294500b003fe1fe56202sm2142556wmd.33.2023.08.10.06.15.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Aug 2023 06:15:50 -0700 (PDT) From: Jiri Pirko To: netdev@vger.kernel.org Cc: kuba@kernel.org, pabeni@redhat.com, davem@davemloft.net, edumazet@google.com, moshe@nvidia.com, saeedm@nvidia.com, idosch@nvidia.com, petrm@nvidia.com Subject: [patch net-next v3 06/13] devlink: pass flags as an arg of dump_one() callback Date: Thu, 10 Aug 2023 15:15:32 +0200 Message-ID: <20230810131539.1602299-7-jiri@resnulli.us> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230810131539.1602299-1-jiri@resnulli.us> References: <20230810131539.1602299-1-jiri@resnulli.us> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_NONE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Patchwork-Delegate: kuba@kernel.org From: Jiri Pirko In order to easily set NLM_F_DUMP_FILTERED for partial dumps, pass the flags as an arg of dump_one() callback. Currently, it is always NLM_F_MULTI. Signed-off-by: Jiri Pirko --- v2->v3: - new patch --- net/devlink/dev.c | 13 +++--- net/devlink/devl_internal.h | 3 +- net/devlink/health.c | 7 +-- net/devlink/leftover.c | 87 ++++++++++++++++++------------------- net/devlink/netlink.c | 2 +- 5 files changed, 56 insertions(+), 56 deletions(-) diff --git a/net/devlink/dev.c b/net/devlink/dev.c index 22e8ab3eaaa2..abf3393a7a17 100644 --- a/net/devlink/dev.c +++ b/net/devlink/dev.c @@ -218,11 +218,11 @@ int devlink_nl_get_doit(struct sk_buff *skb, struct genl_info *info) static int devlink_nl_get_dump_one(struct sk_buff *msg, struct devlink *devlink, - struct netlink_callback *cb) + struct netlink_callback *cb, int flags) { return devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW, NETLINK_CB(cb->skb).portid, - cb->nlh->nlmsg_seq, NLM_F_MULTI); + cb->nlh->nlmsg_seq, flags); } int devlink_nl_get_dumpit(struct sk_buff *msg, struct netlink_callback *cb) @@ -828,13 +828,13 @@ int devlink_nl_info_get_doit(struct sk_buff *skb, struct genl_info *info) static int devlink_nl_info_get_dump_one(struct sk_buff *msg, struct devlink *devlink, - struct netlink_callback *cb) + struct netlink_callback *cb, int flags) { int err; err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET, NETLINK_CB(cb->skb).portid, - cb->nlh->nlmsg_seq, NLM_F_MULTI, + cb->nlh->nlmsg_seq, flags, cb->extack); if (err == -EOPNOTSUPP) err = 0; @@ -1231,14 +1231,15 @@ int devlink_nl_selftests_get_doit(struct sk_buff *skb, struct genl_info *info) static int devlink_nl_selftests_get_dump_one(struct sk_buff *msg, struct devlink *devlink, - struct netlink_callback *cb) + struct netlink_callback *cb, + int flags) { if (!devlink->ops->selftest_check) return 0; return devlink_nl_selftests_fill(msg, devlink, NETLINK_CB(cb->skb).portid, - cb->nlh->nlmsg_seq, NLM_F_MULTI, + cb->nlh->nlmsg_seq, flags, cb->extack); } diff --git a/net/devlink/devl_internal.h b/net/devlink/devl_internal.h index 500c91c61b2d..f8af6ffdbb3a 100644 --- a/net/devlink/devl_internal.h +++ b/net/devlink/devl_internal.h @@ -115,7 +115,8 @@ struct devlink_nl_dump_state { typedef int devlink_nl_dump_one_func_t(struct sk_buff *msg, struct devlink *devlink, - struct netlink_callback *cb); + struct netlink_callback *cb, + int flags); extern const struct genl_small_ops devlink_nl_small_ops[54]; diff --git a/net/devlink/health.c b/net/devlink/health.c index dbe2d6a1df3b..b9b3e68d9043 100644 --- a/net/devlink/health.c +++ b/net/devlink/health.c @@ -386,7 +386,8 @@ int devlink_nl_health_reporter_get_doit(struct sk_buff *skb, static int devlink_nl_health_reporter_get_dump_one(struct sk_buff *msg, struct devlink *devlink, - struct netlink_callback *cb) + struct netlink_callback *cb, + int flags) { struct devlink_nl_dump_state *state = devlink_dump_state(cb); struct devlink_health_reporter *reporter; @@ -404,7 +405,7 @@ static int devlink_nl_health_reporter_get_dump_one(struct sk_buff *msg, DEVLINK_CMD_HEALTH_REPORTER_GET, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, - NLM_F_MULTI); + flags); if (err) { state->idx = idx; return err; @@ -421,7 +422,7 @@ static int devlink_nl_health_reporter_get_dump_one(struct sk_buff *msg, DEVLINK_CMD_HEALTH_REPORTER_GET, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, - NLM_F_MULTI); + flags); if (err) { state->idx = idx; return err; diff --git a/net/devlink/leftover.c b/net/devlink/leftover.c index 21f1058ef14d..883c65545d26 100644 --- a/net/devlink/leftover.c +++ b/net/devlink/leftover.c @@ -1006,7 +1006,7 @@ static void devlink_rate_notify(struct devlink_rate *devlink_rate, static int devlink_nl_rate_get_dump_one(struct sk_buff *msg, struct devlink *devlink, - struct netlink_callback *cb) + struct netlink_callback *cb, int flags) { struct devlink_nl_dump_state *state = devlink_dump_state(cb); struct devlink_rate *devlink_rate; @@ -1022,8 +1022,7 @@ devlink_nl_rate_get_dump_one(struct sk_buff *msg, struct devlink *devlink, continue; } err = devlink_nl_rate_fill(msg, devlink_rate, cmd, id, - cb->nlh->nlmsg_seq, - NLM_F_MULTI, NULL); + cb->nlh->nlmsg_seq, flags, NULL); if (err) { state->idx = idx; break; @@ -1100,7 +1099,7 @@ int devlink_nl_port_get_doit(struct sk_buff *skb, struct genl_info *info) static int devlink_nl_port_get_dump_one(struct sk_buff *msg, struct devlink *devlink, - struct netlink_callback *cb) + struct netlink_callback *cb, int flags) { struct devlink_nl_dump_state *state = devlink_dump_state(cb); struct devlink_port *devlink_port; @@ -1111,8 +1110,8 @@ devlink_nl_port_get_dump_one(struct sk_buff *msg, struct devlink *devlink, err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_NEW, NETLINK_CB(cb->skb).portid, - cb->nlh->nlmsg_seq, - NLM_F_MULTI, cb->extack); + cb->nlh->nlmsg_seq, flags, + cb->extack); if (err) { state->idx = port_index; break; @@ -1856,7 +1855,8 @@ int devlink_nl_linecard_get_doit(struct sk_buff *skb, struct genl_info *info) static int devlink_nl_linecard_get_dump_one(struct sk_buff *msg, struct devlink *devlink, - struct netlink_callback *cb) + struct netlink_callback *cb, + int flags) { struct devlink_nl_dump_state *state = devlink_dump_state(cb); struct devlink_linecard *linecard; @@ -1872,8 +1872,7 @@ static int devlink_nl_linecard_get_dump_one(struct sk_buff *msg, err = devlink_nl_linecard_fill(msg, devlink, linecard, DEVLINK_CMD_LINECARD_NEW, NETLINK_CB(cb->skb).portid, - cb->nlh->nlmsg_seq, - NLM_F_MULTI, + cb->nlh->nlmsg_seq, flags, cb->extack); mutex_unlock(&linecard->state_lock); if (err) { @@ -2120,7 +2119,7 @@ int devlink_nl_sb_get_doit(struct sk_buff *skb, struct genl_info *info) static int devlink_nl_sb_get_dump_one(struct sk_buff *msg, struct devlink *devlink, - struct netlink_callback *cb) + struct netlink_callback *cb, int flags) { struct devlink_nl_dump_state *state = devlink_dump_state(cb); struct devlink_sb *devlink_sb; @@ -2135,8 +2134,7 @@ devlink_nl_sb_get_dump_one(struct sk_buff *msg, struct devlink *devlink, err = devlink_nl_sb_fill(msg, devlink, devlink_sb, DEVLINK_CMD_SB_NEW, NETLINK_CB(cb->skb).portid, - cb->nlh->nlmsg_seq, - NLM_F_MULTI); + cb->nlh->nlmsg_seq, flags); if (err) { state->idx = idx; break; @@ -2233,7 +2231,7 @@ int devlink_nl_sb_pool_get_doit(struct sk_buff *skb, struct genl_info *info) static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx, struct devlink *devlink, struct devlink_sb *devlink_sb, - u32 portid, u32 seq) + u32 portid, u32 seq, int flags) { u16 pool_count = devlink_sb_pool_count(devlink_sb); u16 pool_index; @@ -2248,7 +2246,7 @@ static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx, devlink_sb, pool_index, DEVLINK_CMD_SB_POOL_NEW, - portid, seq, NLM_F_MULTI); + portid, seq, flags); if (err) return err; (*p_idx)++; @@ -2258,7 +2256,7 @@ static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx, static int devlink_nl_sb_pool_get_dump_one(struct sk_buff *msg, struct devlink *devlink, - struct netlink_callback *cb) + struct netlink_callback *cb, int flags) { struct devlink_nl_dump_state *state = devlink_dump_state(cb); struct devlink_sb *devlink_sb; @@ -2272,7 +2270,7 @@ devlink_nl_sb_pool_get_dump_one(struct sk_buff *msg, struct devlink *devlink, err = __sb_pool_get_dumpit(msg, state->idx, &idx, devlink, devlink_sb, NETLINK_CB(cb->skb).portid, - cb->nlh->nlmsg_seq); + cb->nlh->nlmsg_seq, flags); if (err == -EOPNOTSUPP) { err = 0; } else if (err) { @@ -2436,7 +2434,7 @@ int devlink_nl_sb_port_pool_get_doit(struct sk_buff *skb, static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx, struct devlink *devlink, struct devlink_sb *devlink_sb, - u32 portid, u32 seq) + u32 portid, u32 seq, int flags) { struct devlink_port *devlink_port; u16 pool_count = devlink_sb_pool_count(devlink_sb); @@ -2455,8 +2453,7 @@ static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx, devlink_sb, pool_index, DEVLINK_CMD_SB_PORT_POOL_NEW, - portid, seq, - NLM_F_MULTI); + portid, seq, flags); if (err) return err; (*p_idx)++; @@ -2468,7 +2465,7 @@ static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx, static int devlink_nl_sb_port_pool_get_dump_one(struct sk_buff *msg, struct devlink *devlink, - struct netlink_callback *cb) + struct netlink_callback *cb, int flags) { struct devlink_nl_dump_state *state = devlink_dump_state(cb); struct devlink_sb *devlink_sb; @@ -2482,7 +2479,7 @@ devlink_nl_sb_port_pool_get_dump_one(struct sk_buff *msg, err = __sb_port_pool_get_dumpit(msg, state->idx, &idx, devlink, devlink_sb, NETLINK_CB(cb->skb).portid, - cb->nlh->nlmsg_seq); + cb->nlh->nlmsg_seq, flags); if (err == -EOPNOTSUPP) { err = 0; } else if (err) { @@ -2654,7 +2651,7 @@ static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg, int start, int *p_idx, struct devlink *devlink, struct devlink_sb *devlink_sb, - u32 portid, u32 seq) + u32 portid, u32 seq, int flags) { struct devlink_port *devlink_port; unsigned long port_index; @@ -2675,7 +2672,7 @@ static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg, DEVLINK_SB_POOL_TYPE_INGRESS, DEVLINK_CMD_SB_TC_POOL_BIND_NEW, portid, seq, - NLM_F_MULTI); + flags); if (err) return err; (*p_idx)++; @@ -2693,7 +2690,7 @@ static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg, DEVLINK_SB_POOL_TYPE_EGRESS, DEVLINK_CMD_SB_TC_POOL_BIND_NEW, portid, seq, - NLM_F_MULTI); + flags); if (err) return err; (*p_idx)++; @@ -2704,7 +2701,8 @@ static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg, static int devlink_nl_sb_tc_pool_bind_get_dump_one(struct sk_buff *msg, struct devlink *devlink, - struct netlink_callback *cb) + struct netlink_callback *cb, + int flags) { struct devlink_nl_dump_state *state = devlink_dump_state(cb); struct devlink_sb *devlink_sb; @@ -2718,7 +2716,7 @@ static int devlink_nl_sb_tc_pool_bind_get_dump_one(struct sk_buff *msg, err = __sb_tc_pool_bind_get_dumpit(msg, state->idx, &idx, devlink, devlink_sb, NETLINK_CB(cb->skb).portid, - cb->nlh->nlmsg_seq); + cb->nlh->nlmsg_seq, flags); if (err == -EOPNOTSUPP) { err = 0; } else if (err) { @@ -4185,7 +4183,8 @@ static void devlink_param_notify(struct devlink *devlink, static int devlink_nl_param_get_dump_one(struct sk_buff *msg, struct devlink *devlink, - struct netlink_callback *cb) + struct netlink_callback *cb, + int flags) { struct devlink_nl_dump_state *state = devlink_dump_state(cb); struct devlink_param_item *param_item; @@ -4196,8 +4195,7 @@ static int devlink_nl_param_get_dump_one(struct sk_buff *msg, err = devlink_nl_param_fill(msg, devlink, 0, param_item, DEVLINK_CMD_PARAM_GET, NETLINK_CB(cb->skb).portid, - cb->nlh->nlmsg_seq, - NLM_F_MULTI); + cb->nlh->nlmsg_seq, flags); if (err == -EOPNOTSUPP) { err = 0; } else if (err) { @@ -4848,8 +4846,7 @@ int devlink_nl_region_get_doit(struct sk_buff *skb, struct genl_info *info) static int devlink_nl_cmd_region_get_port_dumpit(struct sk_buff *msg, struct netlink_callback *cb, struct devlink_port *port, - int *idx, - int start) + int *idx, int start, int flags) { struct devlink_region *region; int err = 0; @@ -4863,7 +4860,7 @@ static int devlink_nl_cmd_region_get_port_dumpit(struct sk_buff *msg, DEVLINK_CMD_REGION_GET, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, - NLM_F_MULTI, region); + flags, region); if (err) goto out; (*idx)++; @@ -4875,7 +4872,8 @@ static int devlink_nl_cmd_region_get_port_dumpit(struct sk_buff *msg, static int devlink_nl_region_get_dump_one(struct sk_buff *msg, struct devlink *devlink, - struct netlink_callback *cb) + struct netlink_callback *cb, + int flags) { struct devlink_nl_dump_state *state = devlink_dump_state(cb); struct devlink_region *region; @@ -4892,8 +4890,8 @@ static int devlink_nl_region_get_dump_one(struct sk_buff *msg, err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET, NETLINK_CB(cb->skb).portid, - cb->nlh->nlmsg_seq, - NLM_F_MULTI, region); + cb->nlh->nlmsg_seq, flags, + region); if (err) { state->idx = idx; return err; @@ -4903,7 +4901,7 @@ static int devlink_nl_region_get_dump_one(struct sk_buff *msg, xa_for_each(&devlink->ports, port_index, port) { err = devlink_nl_cmd_region_get_port_dumpit(msg, cb, port, &idx, - state->idx); + state->idx, flags); if (err) { state->idx = idx; return err; @@ -5699,7 +5697,7 @@ int devlink_nl_trap_get_doit(struct sk_buff *skb, struct genl_info *info) static int devlink_nl_trap_get_dump_one(struct sk_buff *msg, struct devlink *devlink, - struct netlink_callback *cb) + struct netlink_callback *cb, int flags) { struct devlink_nl_dump_state *state = devlink_dump_state(cb); struct devlink_trap_item *trap_item; @@ -5714,8 +5712,7 @@ static int devlink_nl_trap_get_dump_one(struct sk_buff *msg, err = devlink_nl_trap_fill(msg, devlink, trap_item, DEVLINK_CMD_TRAP_NEW, NETLINK_CB(cb->skb).portid, - cb->nlh->nlmsg_seq, - NLM_F_MULTI); + cb->nlh->nlmsg_seq, flags); if (err) { state->idx = idx; break; @@ -5910,7 +5907,8 @@ int devlink_nl_trap_group_get_doit(struct sk_buff *skb, struct genl_info *info) static int devlink_nl_trap_group_get_dump_one(struct sk_buff *msg, struct devlink *devlink, - struct netlink_callback *cb) + struct netlink_callback *cb, + int flags) { struct devlink_nl_dump_state *state = devlink_dump_state(cb); struct devlink_trap_group_item *group_item; @@ -5926,8 +5924,7 @@ static int devlink_nl_trap_group_get_dump_one(struct sk_buff *msg, err = devlink_nl_trap_group_fill(msg, devlink, group_item, DEVLINK_CMD_TRAP_GROUP_NEW, NETLINK_CB(cb->skb).portid, - cb->nlh->nlmsg_seq, - NLM_F_MULTI); + cb->nlh->nlmsg_seq, flags); if (err) { state->idx = idx; break; @@ -6205,7 +6202,8 @@ int devlink_nl_trap_policer_get_doit(struct sk_buff *skb, static int devlink_nl_trap_policer_get_dump_one(struct sk_buff *msg, struct devlink *devlink, - struct netlink_callback *cb) + struct netlink_callback *cb, + int flags) { struct devlink_nl_dump_state *state = devlink_dump_state(cb); struct devlink_trap_policer_item *policer_item; @@ -6220,8 +6218,7 @@ static int devlink_nl_trap_policer_get_dump_one(struct sk_buff *msg, err = devlink_nl_trap_policer_fill(msg, devlink, policer_item, DEVLINK_CMD_TRAP_POLICER_NEW, NETLINK_CB(cb->skb).portid, - cb->nlh->nlmsg_seq, - NLM_F_MULTI); + cb->nlh->nlmsg_seq, flags); if (err) { state->idx = idx; break; diff --git a/net/devlink/netlink.c b/net/devlink/netlink.c index 13388665f319..47e44fb45815 100644 --- a/net/devlink/netlink.c +++ b/net/devlink/netlink.c @@ -182,7 +182,7 @@ int devlink_nl_dumpit(struct sk_buff *msg, struct netlink_callback *cb, devl_lock(devlink); if (devl_is_registered(devlink)) - err = dump_one(msg, devlink, cb); + err = dump_one(msg, devlink, cb, NLM_F_MULTI); else err = 0;