diff options
| author |   Samiullah Khawaja <skhawaja@google.com> | 2025-07-10 21:12:03 +0000 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2025-07-14 18:02:37 -0700 |
| commit | 2677010e7793451c20d895c477c4dc76f6e6a10e (patch) | |
| tree | b01196cdc5e5b9804e2a073f1ec4abff855c0665 /net/core/netdev-genl.c | |
| parent | net: phy: Don't register LEDs for genphy (diff) | |
| download | wireguard-linux-2677010e7793451c20d895c477c4dc76f6e6a10e.tar.xz wireguard-linux-2677010e7793451c20d895c477c4dc76f6e6a10e.zip | |
Add support to set NAPI threaded for individual NAPI
A net device has a threaded sysctl that can be used to enable threaded
NAPI polling on all of the NAPI contexts under that device. Allow
enabling threaded NAPI polling at individual NAPI level using netlink.
Extend the netlink operation `napi-set` and allow setting the threaded
attribute of a NAPI. This will enable the threaded polling on a NAPI
context.
Add a test in `nl_netdev.py` that verifies various cases of threaded
NAPI being set at NAPI and at device level.
Tested
./tools/testing/selftests/net/nl_netdev.py
TAP version 13
1..7
ok 1 nl_netdev.empty_check
ok 2 nl_netdev.lo_check
ok 3 nl_netdev.page_pool_check
ok 4 nl_netdev.napi_list_check
ok 5 nl_netdev.dev_set_threaded
ok 6 nl_netdev.napi_set_threaded
ok 7 nl_netdev.nsim_rxq_reset_down
# Totals: pass:7 fail:0 xfail:0 xpass:0 skip:0 error:0
Signed-off-by: Samiullah Khawaja <skhawaja@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250710211203.3979655-1-skhawaja@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/core/netdev-genl.c')
| -rw-r--r-- | net/core/netdev-genl.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/net/core/netdev-genl.c b/net/core/netdev-genl.c index 2afa7b2141aa..5875df372415 100644 --- a/net/core/netdev-genl.c +++ b/net/core/netdev-genl.c @@ -184,6 +184,10 @@ netdev_nl_napi_fill_one(struct sk_buff *rsp, struct napi_struct *napi, if (napi->irq >= 0 && nla_put_u32(rsp, NETDEV_A_NAPI_IRQ, napi->irq)) goto nla_put_failure; + if (nla_put_uint(rsp, NETDEV_A_NAPI_THREADED, + napi_get_threaded(napi))) + goto nla_put_failure; + if (napi->thread) { pid = task_pid_nr(napi->thread); if (nla_put_u32(rsp, NETDEV_A_NAPI_PID, pid)) @@ -322,8 +326,18 @@ netdev_nl_napi_set_config(struct napi_struct *napi, struct genl_info *info) { u64 irq_suspend_timeout = 0; u64 gro_flush_timeout = 0; + u8 threaded = 0; u32 defer = 0; + if (info->attrs[NETDEV_A_NAPI_THREADED]) { + int ret; + + threaded = nla_get_uint(info->attrs[NETDEV_A_NAPI_THREADED]); + ret = napi_set_threaded(napi, !!threaded); + if (ret) + return ret; + } + if (info->attrs[NETDEV_A_NAPI_DEFER_HARD_IRQS]) { defer = nla_get_u32(info->attrs[NETDEV_A_NAPI_DEFER_HARD_IRQS]); napi_set_defer_hard_irqs(napi, defer); |