diff mbox series

[RFC,net-next,v4,4/9] netdev-genl: Dump gro_flush_timeout

Message ID 20241001235302.57609-5-jdamato@fastly.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series Add support for per-NAPI config via netlink | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next, async
netdev/ynl fail Tree is dirty after regen; build failed; build has 5 warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 46 this patch: 46
netdev/build_tools success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers success CCed 6 of 6 maintainers
netdev/build_clang success Errors and warnings before: 86 this patch: 86
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 4146 this patch: 4146
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 50 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 12 this patch: 12
netdev/source_inline success Was 0 now: 0

Commit Message

Joe Damato Oct. 1, 2024, 11:52 p.m. UTC 
Support dumping gro_flush_timeout for a NAPI ID.

Signed-off-by: Joe Damato <jdamato@fastly.com>
---
 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 mbox series

Patch

diff --git a/Documentation/netlink/specs/netdev.yaml b/Documentation/netlink/specs/netdev.yaml
index 585e87ec3c16..bf13613eaa0d 100644
--- a/Documentation/netlink/specs/netdev.yaml
+++ b/Documentation/netlink/specs/netdev.yaml
@@ -255,6 +255,11 @@  attribute-sets:
         type: u32
         checks:
           max: s32-max
+      -
+        name: gro-flush-timeout
+        doc: The timeout, in nanoseconds, of when to trigger the NAPI
+             watchdog timer and schedule NAPI processing.
+        type: uint
   -
     name: queue
     attributes:
@@ -644,6 +649,7 @@  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 13dc0b027e86..cacd33359c76 100644
--- a/include/uapi/linux/netdev.h
+++ b/include/uapi/linux/netdev.h
@@ -123,6 +123,7 @@  enum {
 	NETDEV_A_NAPI_IRQ,
 	NETDEV_A_NAPI_PID,
 	NETDEV_A_NAPI_DEFER_HARD_IRQS,
+	NETDEV_A_NAPI_GRO_FLUSH_TIMEOUT,
 
 	__NETDEV_A_NAPI_MAX,
 	NETDEV_A_NAPI_MAX = (__NETDEV_A_NAPI_MAX - 1)
diff --git a/net/core/netdev-genl.c b/net/core/netdev-genl.c
index de9bd76f43f8..64e5e4cee60d 100644
--- a/net/core/netdev-genl.c
+++ b/net/core/netdev-genl.c
@@ -161,6 +161,7 @@  static int
 netdev_nl_napi_fill_one(struct sk_buff *rsp, struct napi_struct *napi,
 			const struct genl_info *info)
 {
+	unsigned long gro_flush_timeout;
 	u32 napi_defer_hard_irqs;
 	void *hdr;
 	pid_t pid;
@@ -195,6 +196,11 @@  netdev_nl_napi_fill_one(struct sk_buff *rsp, struct napi_struct *napi,
 			napi_defer_hard_irqs))
 		goto nla_put_failure;
 
+	gro_flush_timeout = napi_get_gro_flush_timeout(napi);
+	if (nla_put_uint(rsp, NETDEV_A_NAPI_GRO_FLUSH_TIMEOUT,
+			 gro_flush_timeout))
+		goto nla_put_failure;
+
 	genlmsg_end(rsp, hdr);
 
 	return 0;
diff --git a/tools/include/uapi/linux/netdev.h b/tools/include/uapi/linux/netdev.h
index 13dc0b027e86..cacd33359c76 100644
--- a/tools/include/uapi/linux/netdev.h
+++ b/tools/include/uapi/linux/netdev.h
@@ -123,6 +123,7 @@  enum {
 	NETDEV_A_NAPI_IRQ,
 	NETDEV_A_NAPI_PID,
 	NETDEV_A_NAPI_DEFER_HARD_IRQS,
+	NETDEV_A_NAPI_GRO_FLUSH_TIMEOUT,
 
 	__NETDEV_A_NAPI_MAX,
 	NETDEV_A_NAPI_MAX = (__NETDEV_A_NAPI_MAX - 1)