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net: napi: Make gro_flush_timeout per-NAPI

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Allow per-NAPI gro_flush_timeout setting.

The existing sysfs parameter is respected; writes to sysfs will write to
all NAPI structs for the device and the net_device gro_flush_timeout
field. Reads from sysfs will read from the net_device field.

The ability to set gro_flush_timeout on specific NAPI instances will be
added in a later commit, via netdev-genl.

Signed-off-by: Joe Damato <jdamato@fastly.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Link: https://patch.msgid.link/20241011184527.16393-4-jdamato@fastly.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Joe Damato
2024-10-11 18:44:58 +00:00
committed by Jakub Kicinski
parent 5160104600
commit acb8d4ed56
5 changed files with 50 additions and 8 deletions
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3
include/linux/netdevice.h
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@@ -373,6 +373,7 @@ struct napi_struct {
unsigned int napi_id;
struct hrtimer timer;
struct task_struct *thread;
unsigned long gro_flush_timeout;
u32 defer_hard_irqs;
/* control-path-only fields follow */
struct list_head dev_list;
@@ -2085,7 +2086,6 @@ struct net_device {
int ifindex;
unsigned int real_num_rx_queues;
struct netdev_rx_queue *_rx;
unsigned long gro_flush_timeout;
unsigned int gro_max_size;
unsigned int gro_ipv4_max_size;
rx_handler_func_t __rcu *rx_handler;
@@ -2413,6 +2413,7 @@ struct net_device {
struct dim_irq_moder *irq_moder;
u64 max_pacing_offload_horizon;
unsigned long gro_flush_timeout;
u32 napi_defer_hard_irqs;
/**