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Date: Thu, 16 Nov 2023 17:17:25 -0800
From: Amritha Nambiar <amritha.nambiar@...el.com>
To: netdev@...r.kernel.org, kuba@...nel.org, pabeni@...hat.com
Cc: sridhar.samudrala@...el.com, amritha.nambiar@...el.com
Subject: [net-next PATCH v8 09/10] netdev-genl: spec: Add PID in netdev
netlink YAML spec
Add support in netlink spec(netdev.yaml) for PID of the
NAPI thread. Add code generated from the spec.
Signed-off-by: Amritha Nambiar <amritha.nambiar@...el.com>
Reviewed-by: Sridhar Samudrala <sridhar.samudrala@...el.com>
---
Documentation/netlink/specs/netdev.yaml | 7 +++++++
include/uapi/linux/netdev.h | 1 +
tools/include/uapi/linux/netdev.h | 1 +
tools/net/ynl/generated/netdev-user.c | 6 ++++++
tools/net/ynl/generated/netdev-user.h | 2 ++
5 files changed, 17 insertions(+)
diff --git a/Documentation/netlink/specs/netdev.yaml b/Documentation/netlink/specs/netdev.yaml
index 4161f302352d..382022a0d039 100644
--- a/Documentation/netlink/specs/netdev.yaml
+++ b/Documentation/netlink/specs/netdev.yaml
@@ -108,6 +108,12 @@ attribute-sets:
name: irq
doc: The associated interrupt vector number for the napi
type: u32
+ -
+ name: pid
+ doc: PID of the napi thread, if NAPI is configured to operate in
+ threaded mode. If NAPI is not in threaded mode (i.e. uses normal
+ softirq context), the attribute will be absent.
+ type: u32
-
name: queue
attributes:
@@ -202,6 +208,7 @@ operations:
- id
- ifindex
- irq
+ - pid
dump:
request:
attributes:
diff --git a/include/uapi/linux/netdev.h b/include/uapi/linux/netdev.h
index 10ddb7cfde07..c4be7fadfdf9 100644
--- a/include/uapi/linux/netdev.h
+++ b/include/uapi/linux/netdev.h
@@ -73,6 +73,7 @@ enum {
NETDEV_A_NAPI_IFINDEX = 1,
NETDEV_A_NAPI_ID,
NETDEV_A_NAPI_IRQ,
+ NETDEV_A_NAPI_PID,
__NETDEV_A_NAPI_MAX,
NETDEV_A_NAPI_MAX = (__NETDEV_A_NAPI_MAX - 1)
diff --git a/tools/include/uapi/linux/netdev.h b/tools/include/uapi/linux/netdev.h
index 10ddb7cfde07..c4be7fadfdf9 100644
--- a/tools/include/uapi/linux/netdev.h
+++ b/tools/include/uapi/linux/netdev.h
@@ -73,6 +73,7 @@ enum {
NETDEV_A_NAPI_IFINDEX = 1,
NETDEV_A_NAPI_ID,
NETDEV_A_NAPI_IRQ,
+ NETDEV_A_NAPI_PID,
__NETDEV_A_NAPI_MAX,
NETDEV_A_NAPI_MAX = (__NETDEV_A_NAPI_MAX - 1)
diff --git a/tools/net/ynl/generated/netdev-user.c b/tools/net/ynl/generated/netdev-user.c
index 2bd57420b548..5f3ca6ef9aa6 100644
--- a/tools/net/ynl/generated/netdev-user.c
+++ b/tools/net/ynl/generated/netdev-user.c
@@ -102,6 +102,7 @@ struct ynl_policy_attr netdev_napi_policy[NETDEV_A_NAPI_MAX + 1] = {
[NETDEV_A_NAPI_IFINDEX] = { .name = "ifindex", .type = YNL_PT_U32, },
[NETDEV_A_NAPI_ID] = { .name = "id", .type = YNL_PT_U32, },
[NETDEV_A_NAPI_IRQ] = { .name = "irq", .type = YNL_PT_U32, },
+ [NETDEV_A_NAPI_PID] = { .name = "pid", .type = YNL_PT_U32, },
};
struct ynl_policy_nest netdev_napi_nest = {
@@ -400,6 +401,11 @@ int netdev_napi_get_rsp_parse(const struct nlmsghdr *nlh, void *data)
return MNL_CB_ERROR;
dst->_present.irq = 1;
dst->irq = mnl_attr_get_u32(attr);
+ } else if (type == NETDEV_A_NAPI_PID) {
+ if (ynl_attr_validate(yarg, attr))
+ return MNL_CB_ERROR;
+ dst->_present.pid = 1;
+ dst->pid = mnl_attr_get_u32(attr);
}
}
diff --git a/tools/net/ynl/generated/netdev-user.h b/tools/net/ynl/generated/netdev-user.h
index de7205b63ccf..8337735389bf 100644
--- a/tools/net/ynl/generated/netdev-user.h
+++ b/tools/net/ynl/generated/netdev-user.h
@@ -214,11 +214,13 @@ struct netdev_napi_get_rsp {
__u32 id:1;
__u32 ifindex:1;
__u32 irq:1;
+ __u32 pid:1;
} _present;
__u32 id;
__u32 ifindex;
__u32 irq;
+ __u32 pid;
};
void netdev_napi_get_rsp_free(struct netdev_napi_get_rsp *rsp);
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