@@ -244,6 +244,13 @@ 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: defer-hard-irqs
+ doc: The number of consecutive empty polls before IRQ deferral ends
+ and hardware IRQs are re-enabled.
+ type: u32
+ checks:
+ max: s32-max
-
name: queue
attributes:
@@ -593,6 +600,7 @@ operations:
- ifindex
- irq
- pid
+ - defer-hard-irqs
dump:
request:
attributes:
@@ -121,6 +121,7 @@ enum {
NETDEV_A_NAPI_ID,
NETDEV_A_NAPI_IRQ,
NETDEV_A_NAPI_PID,
+ NETDEV_A_NAPI_DEFER_HARD_IRQS,
__NETDEV_A_NAPI_MAX,
NETDEV_A_NAPI_MAX = (__NETDEV_A_NAPI_MAX - 1)
@@ -160,6 +160,7 @@ static int
netdev_nl_napi_fill_one(struct sk_buff *rsp, struct napi_struct *napi,
const struct genl_info *info)
{
+ u32 napi_defer_hard_irqs;
void *hdr;
pid_t pid;
@@ -188,6 +189,10 @@ netdev_nl_napi_fill_one(struct sk_buff *rsp, struct napi_struct *napi,
goto nla_put_failure;
}
+ napi_defer_hard_irqs = napi_get_defer_hard_irqs(napi);
+ if (nla_put_s32(rsp, NETDEV_A_NAPI_DEFER_HARD_IRQS, napi_defer_hard_irqs))
+ goto nla_put_failure;
+
genlmsg_end(rsp, hdr);
return 0;
@@ -121,6 +121,7 @@ enum {
NETDEV_A_NAPI_ID,
NETDEV_A_NAPI_IRQ,
NETDEV_A_NAPI_PID,
+ NETDEV_A_NAPI_DEFER_HARD_IRQS,
__NETDEV_A_NAPI_MAX,
NETDEV_A_NAPI_MAX = (__NETDEV_A_NAPI_MAX - 1)
Support dumping defer_hard_irqs for a NAPI ID. Signed-off-by: Joe Damato <jdamato@fastly.com> --- Documentation/netlink/specs/netdev.yaml | 8 ++++++++ include/uapi/linux/netdev.h | 1 + net/core/netdev-genl.c | 5 +++++ tools/include/uapi/linux/netdev.h | 1 + 4 files changed, 15 insertions(+)