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@intel.com>
Reviewed-by: Sridhar Samudrala <sridhar.samudrala@intel.com>
Link: https://lore.kernel.org/r/170147335301.5260.11872351477120434501.stgit@anambiarhost.jf.intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/Documentation/netlink/specs/netdev.yaml b/Documentation/netlink/specs/netdev.yaml
index a3a1c6ad521b72a3db19011a940874200f683d91..f2c76d103bd86a832414b4d0bdfa56e893402301 100644 (file)
--- a/Documentation/netlink/specs/netdev.yaml
+++ b/Documentation/netlink/specs/netdev.yaml
@@ -230,6 +230,12 @@ 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:
@@ -389,6 +395,7 @@ operations:
             - id
             - ifindex
             - irq
+            - pid
       dump:
         request:
           attributes:

diff --git a/include/uapi/linux/netdev.h b/include/uapi/linux/netdev.h
index 30fea409b71e351bf757e8b88f8aed595d2ec47e..424c5e28f4951986b709f95b307b3f8b4d4655f5 100644 (file)
--- a/include/uapi/linux/netdev.h
+++ b/include/uapi/linux/netdev.h
@@ -113,6 +113,7 @@ 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 30fea409b71e351bf757e8b88f8aed595d2ec47e..424c5e28f4951986b709f95b307b3f8b4d4655f5 100644 (file)
--- a/tools/include/uapi/linux/netdev.h
+++ b/tools/include/uapi/linux/netdev.h
@@ -113,6 +113,7 @@ 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 58e5196da4bde49215efe12368edbb7926bdea96..ed8bcb855a1de0798787c14b4c8c2b943d80dcac 100644 (file)
--- a/tools/net/ynl/generated/netdev-user.c
+++ b/tools/net/ynl/generated/netdev-user.c
@@ -165,6 +165,7 @@ 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 = {
@@ -216,6 +217,11 @@ int netdev_page_pool_info_parse(struct ynl_parse_arg *yarg,
                                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 0c3224017c121de34297e8b2cd5b7c24c1c71076..3830cf2ab6b86da436e18011af3e806e6c383712 100644 (file)
--- a/tools/net/ynl/generated/netdev-user.h
+++ b/tools/net/ynl/generated/netdev-user.h
@@ -388,11 +388,13 @@ 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);