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[24.6.151.244]) by smtp.gmail.com with ESMTPSA id du17-20020a056a002b5100b006e46672df97sm5751327pfb.75.2024.02.21.07.58.36 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 21 Feb 2024 07:58:37 -0800 (PST) From: Joe Damato To: netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Joe Damato , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Jesper Dangaard Brouer , Stanislav Fomichev , Amritha Nambiar , Larysa Zaremba , Lorenzo Bianconi , Tariq Toukan , Sridhar Samudrala , Alexei Starovoitov , Maciej Fijalkowski Subject: [PATCH net-next 1/2] netdev-genl: Add ifname for queue and NAPI APIs Date: Wed, 21 Feb 2024 07:57:29 -0800 Message-Id: <1708531057-67392-2-git-send-email-jdamato@fastly.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1708531057-67392-1-git-send-email-jdamato@fastly.com> References: <1708531057-67392-1-git-send-email-jdamato@fastly.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1791524843281397403 X-GMAIL-MSGID: 1791524843281397403 Expose the netdevice name when queue and NAPI netdev-genl APIs are used Signed-off-by: Joe Damato --- include/uapi/linux/netdev.h | 2 ++ net/core/netdev-genl.c | 22 +++++++++++++++++----- 2 files changed, 19 insertions(+), 5 deletions(-) diff --git a/include/uapi/linux/netdev.h b/include/uapi/linux/netdev.h index 93cb411..80762bc 100644 --- a/include/uapi/linux/netdev.h +++ b/include/uapi/linux/netdev.h @@ -117,6 +117,7 @@ enum { NETDEV_A_NAPI_ID, NETDEV_A_NAPI_IRQ, NETDEV_A_NAPI_PID, + NETDEV_A_NAPI_IFNAME, __NETDEV_A_NAPI_MAX, NETDEV_A_NAPI_MAX = (__NETDEV_A_NAPI_MAX - 1) @@ -127,6 +128,7 @@ enum { NETDEV_A_QUEUE_IFINDEX, NETDEV_A_QUEUE_TYPE, NETDEV_A_QUEUE_NAPI_ID, + NETDEV_A_QUEUE_IFNAME, __NETDEV_A_QUEUE_MAX, NETDEV_A_QUEUE_MAX = (__NETDEV_A_QUEUE_MAX - 1) diff --git a/net/core/netdev-genl.c b/net/core/netdev-genl.c index fd98936..a886e6a 100644 --- a/net/core/netdev-genl.c +++ b/net/core/netdev-genl.c @@ -181,6 +181,9 @@ netdev_nl_napi_fill_one(struct sk_buff *rsp, struct napi_struct *napi, if (nla_put_u32(rsp, NETDEV_A_NAPI_IFINDEX, napi->dev->ifindex)) goto nla_put_failure; + if (nla_put_string(rsp, NETDEV_A_NAPI_IFNAME, napi->dev->name)) + goto nla_put_failure; + if (napi->irq >= 0 && nla_put_u32(rsp, NETDEV_A_NAPI_IRQ, napi->irq)) goto nla_put_failure; @@ -307,7 +310,8 @@ netdev_nl_queue_fill_one(struct sk_buff *rsp, struct net_device *netdev, if (nla_put_u32(rsp, NETDEV_A_QUEUE_ID, q_idx) || nla_put_u32(rsp, NETDEV_A_QUEUE_TYPE, q_type) || - nla_put_u32(rsp, NETDEV_A_QUEUE_IFINDEX, netdev->ifindex)) + nla_put_u32(rsp, NETDEV_A_QUEUE_IFINDEX, netdev->ifindex) || + nla_put_string(rsp, NETDEV_A_QUEUE_IFNAME, netdev->name)) goto nla_put_failure; switch (q_type) { @@ -369,16 +373,19 @@ int netdev_nl_queue_get_doit(struct sk_buff *skb, struct genl_info *info) u32 q_id, q_type, ifindex; struct net_device *netdev; struct sk_buff *rsp; + char *ifname; int err; if (GENL_REQ_ATTR_CHECK(info, NETDEV_A_QUEUE_ID) || GENL_REQ_ATTR_CHECK(info, NETDEV_A_QUEUE_TYPE) || - GENL_REQ_ATTR_CHECK(info, NETDEV_A_QUEUE_IFINDEX)) + GENL_REQ_ATTR_CHECK(info, NETDEV_A_QUEUE_IFINDEX) || + GENL_REQ_ATTR_CHECK(info, NETDEV_A_QUEUE_IFNAME)) return -EINVAL; q_id = nla_get_u32(info->attrs[NETDEV_A_QUEUE_ID]); q_type = nla_get_u32(info->attrs[NETDEV_A_QUEUE_TYPE]); ifindex = nla_get_u32(info->attrs[NETDEV_A_QUEUE_IFINDEX]); + nla_strscpy(ifname, info->attrs[NETDEV_A_QUEUE_IFNAME], IFNAMSIZ); rsp = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!rsp) @@ -387,10 +394,15 @@ int netdev_nl_queue_get_doit(struct sk_buff *skb, struct genl_info *info) rtnl_lock(); netdev = __dev_get_by_index(genl_info_net(info), ifindex); - if (netdev) - err = netdev_nl_queue_fill(rsp, netdev, q_id, q_type, info); - else + + if (strcmp(netdev->name, ifname)) { err = -ENODEV; + } else { + if (netdev) + err = netdev_nl_queue_fill(rsp, netdev, q_id, q_type, info); + else + err = -ENODEV; + } rtnl_unlock(); From patchwork Wed Feb 21 15:57:30 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joe Damato X-Patchwork-Id: 204280 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:693c:2685:b0:108:e6aa:91d0 with SMTP id mn5csp1127273dyc; 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[24.6.151.244]) by smtp.gmail.com with ESMTPSA id du17-20020a056a002b5100b006e46672df97sm5751327pfb.75.2024.02.21.07.58.41 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 21 Feb 2024 07:58:42 -0800 (PST) From: Joe Damato To: netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Joe Damato , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Jesper Dangaard Brouer , Stanislav Fomichev , Amritha Nambiar , Tariq Toukan , Sridhar Samudrala , Alexei Starovoitov , Larysa Zaremba Subject: [PATCH net-next 2/2] netdev-genl: spec: Add ifname to netdev nl YAML spec Date: Wed, 21 Feb 2024 07:57:30 -0800 Message-Id: <1708531057-67392-3-git-send-email-jdamato@fastly.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1708531057-67392-1-git-send-email-jdamato@fastly.com> References: <1708531057-67392-1-git-send-email-jdamato@fastly.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1791524850904120908 X-GMAIL-MSGID: 1791524850904120908 Add support to netdev netlink spec (netdev.yaml) for the ifname of the net device. Signed-off-by: Joe Damato --- Documentation/netlink/specs/netdev.yaml | 10 ++++++++++ tools/include/uapi/linux/netdev.h | 2 ++ 2 files changed, 12 insertions(+) diff --git a/Documentation/netlink/specs/netdev.yaml b/Documentation/netlink/specs/netdev.yaml index 3addac9..9a92d04 100644 --- a/Documentation/netlink/specs/netdev.yaml +++ b/Documentation/netlink/specs/netdev.yaml @@ -240,6 +240,10 @@ attribute-sets: threaded mode. If NAPI is not in threaded mode (i.e. uses normal softirq context), the attribute will be absent. type: u32 + - + name: ifname + doc: name of the netdevice to which NAPI instance belongs. + type: string - name: queue attributes: @@ -264,6 +268,10 @@ attribute-sets: name: napi-id doc: ID of the NAPI instance which services this queue. type: u32 + - + name: ifname + doc: name of the netdevice to which the queue belongs. + type: string operations: list: @@ -381,6 +389,7 @@ operations: - type - napi-id - ifindex + - ifname dump: request: attributes: @@ -400,6 +409,7 @@ operations: - ifindex - irq - pid + - ifname dump: request: attributes: diff --git a/tools/include/uapi/linux/netdev.h b/tools/include/uapi/linux/netdev.h index 93cb411..80762bc 100644 --- a/tools/include/uapi/linux/netdev.h +++ b/tools/include/uapi/linux/netdev.h @@ -117,6 +117,7 @@ enum { NETDEV_A_NAPI_ID, NETDEV_A_NAPI_IRQ, NETDEV_A_NAPI_PID, + NETDEV_A_NAPI_IFNAME, __NETDEV_A_NAPI_MAX, NETDEV_A_NAPI_MAX = (__NETDEV_A_NAPI_MAX - 1) @@ -127,6 +128,7 @@ enum { NETDEV_A_QUEUE_IFINDEX, NETDEV_A_QUEUE_TYPE, NETDEV_A_QUEUE_NAPI_ID, + NETDEV_A_QUEUE_IFNAME, __NETDEV_A_QUEUE_MAX, NETDEV_A_QUEUE_MAX = (__NETDEV_A_QUEUE_MAX - 1)