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Miller" , Paolo Abeni , Jesper Dangaard Brouer , Xuan Zhuo , Larysa Zaremba , linux-kernel@vger.kernel.org (open list) Subject: [PATCH net-next 4/5] netdev-genl: Dump gro_flush_timeout Date: Thu, 29 Aug 2024 13:12:00 +0000 Message-Id: <20240829131214.169977-5-jdamato@fastly.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240829131214.169977-1-jdamato@fastly.com> References: <20240829131214.169977-1-jdamato@fastly.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Support dumping gro_flush_timeout for a NAPI ID. Signed-off-by: Joe Damato Reviewed-by: Martin Karsten Tested-by: Martin Karsten --- Documentation/netlink/specs/netdev.yaml | 6 ++++++ include/uapi/linux/netdev.h | 1 + net/core/netdev-genl.c | 6 ++++++ tools/include/uapi/linux/netdev.h | 1 + 4 files changed, 14 insertions(+) diff --git a/Documentation/netlink/specs/netdev.yaml b/Documentation/netlin= k/specs/netdev.yaml index ee4f99fd4574..290894962ac4 100644 --- a/Documentation/netlink/specs/netdev.yaml +++ b/Documentation/netlink/specs/netdev.yaml @@ -249,6 +249,11 @@ attribute-sets: doc: The number of consecutive empty polls before IRQ deferral ends and hardware IRQs are re-enabled. type: s32 + - + name: gro-flush-timeout + doc: The timeout, in nanoseconds, of when to trigger the NAPI + watchdog timer and schedule NAPI processing. + type: u64 - name: queue attributes: @@ -599,6 +604,7 @@ operations: - irq - pid - defer-hard-irqs + - gro-flush-timeout dump: request: attributes: diff --git a/include/uapi/linux/netdev.h b/include/uapi/linux/netdev.h index 43bb1aad9611..b088a34e9254 100644 --- a/include/uapi/linux/netdev.h +++ b/include/uapi/linux/netdev.h @@ -122,6 +122,7 @@ enum { NETDEV_A_NAPI_IRQ, NETDEV_A_NAPI_PID, NETDEV_A_NAPI_DEFER_HARD_IRQS, + NETDEV_A_NAPI_GRO_FLUSH_TIMEOUT, =20 __NETDEV_A_NAPI_MAX, NETDEV_A_NAPI_MAX =3D (__NETDEV_A_NAPI_MAX - 1) diff --git a/net/core/netdev-genl.c b/net/core/netdev-genl.c index 79b14ad6f4bb..2eee95d05fe0 100644 --- a/net/core/netdev-genl.c +++ b/net/core/netdev-genl.c @@ -161,6 +161,7 @@ netdev_nl_napi_fill_one(struct sk_buff *rsp, struct nap= i_struct *napi, const struct genl_info *info) { int napi_defer_hard_irqs; + unsigned long gro_flush_timeout; void *hdr; pid_t pid; =20 @@ -193,6 +194,11 @@ netdev_nl_napi_fill_one(struct sk_buff *rsp, struct na= pi_struct *napi, if (nla_put_s32(rsp, NETDEV_A_NAPI_DEFER_HARD_IRQS, napi_defer_hard_irqs)) goto nla_put_failure; =20 + gro_flush_timeout =3D napi_get_gro_flush_timeout(napi); + if (nla_put_u64_64bit(rsp, NETDEV_A_NAPI_GRO_FLUSH_TIMEOUT, + gro_flush_timeout, NETDEV_A_DEV_PAD)) + goto nla_put_failure; + genlmsg_end(rsp, hdr); =20 return 0; diff --git a/tools/include/uapi/linux/netdev.h b/tools/include/uapi/linux/n= etdev.h index 43bb1aad9611..b088a34e9254 100644 --- a/tools/include/uapi/linux/netdev.h +++ b/tools/include/uapi/linux/netdev.h @@ -122,6 +122,7 @@ enum { NETDEV_A_NAPI_IRQ, NETDEV_A_NAPI_PID, NETDEV_A_NAPI_DEFER_HARD_IRQS, + NETDEV_A_NAPI_GRO_FLUSH_TIMEOUT, =20 __NETDEV_A_NAPI_MAX, NETDEV_A_NAPI_MAX =3D (__NETDEV_A_NAPI_MAX - 1) --=20 2.25.1