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netdev-genl: Add PID for the NAPI thread

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In the threaded NAPI mode, expose the PID of the NAPI thread.

Signed-off-by: Amritha Nambiar <amritha.nambiar@intel.com>
Reviewed-by: Sridhar Samudrala <sridhar.samudrala@intel.com>
Link: https://lore.kernel.org/r/170147335818.5260.10253384006102593087.stgit@anambiarhost.jf.intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Amritha Nambiar 2023-12-01 15:29:18 -08:00 committed by Jakub Kicinski
parent 8481a249a0
commit db4704f4e4
1 changed files with 7 additions and 0 deletions
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7
net/core/netdev-genl.c
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@ -163,6 +163,7 @@ netdev_nl_napi_fill_one(struct sk_buff *rsp, struct napi_struct *napi,
const struct genl_info *info) const struct genl_info *info)
{ {
void *hdr; void *hdr;
pid_t pid;
if (WARN_ON_ONCE(!napi->dev)) if (WARN_ON_ONCE(!napi->dev))
return -EINVAL; return -EINVAL;
@ -183,6 +184,12 @@ 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)) if (napi->irq >= 0 && nla_put_u32(rsp, NETDEV_A_NAPI_IRQ, napi->irq))
goto nla_put_failure; goto nla_put_failure;
if (napi->thread) {
pid = task_pid_nr(napi->thread);
if (nla_put_u32(rsp, NETDEV_A_NAPI_PID, pid))
goto nla_put_failure;
}
genlmsg_end(rsp, hdr); genlmsg_end(rsp, hdr);
return 0; return 0;