Merge branch 'ynl-couple-of-unrelated-fixes'

Stanislav Fomichev says:

====================
ynl: couple of unrelated fixes

- spelling of xdp-features
- s/xdp_zc_max_segs/xdp-zc-max-segs/
- expose xdp-zc-max-segs
- add /* private: */
- regenerate headers
- print xdp_zc_max_segs from sample
====================

Link: https://lore.kernel.org/r/20230727163001.3952878-1-sdf@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Documentation/netlink/specs/netdev.yaml

@@ -14,7 +14,7 @@ definitions:
       -
         name: basic
         doc:
-          XDP feautues set supported by all drivers
+          XDP features set supported by all drivers
           (XDP_ABORTED, XDP_DROP, XDP_PASS, XDP_TX)
       -
         name: redirect
@@ -63,7 +63,7 @@ attribute-sets:
         enum: xdp-act
         enum-as-flags: true
       -
-        name: xdp_zc_max_segs
+        name: xdp-zc-max-segs
         doc: max fragment count supported by ZC driver
         type: u32
         checks:
@@ -83,6 +83,7 @@ operations:
           attributes:
             - ifindex
             - xdp-features
+            - xdp-zc-max-segs
       dump:
         reply: *dev-all
     -

include/uapi/linux/netdev.h

@@ -11,7 +11,7 @@
 
 /**
  * enum netdev_xdp_act
- * @NETDEV_XDP_ACT_BASIC: XDP feautues set supported by all drivers
+ * @NETDEV_XDP_ACT_BASIC: XDP features set supported by all drivers
  *   (XDP_ABORTED, XDP_DROP, XDP_PASS, XDP_TX)
  * @NETDEV_XDP_ACT_REDIRECT: The netdev supports XDP_REDIRECT
  * @NETDEV_XDP_ACT_NDO_XMIT: This feature informs if netdev implements
@@ -34,6 +34,7 @@ enum netdev_xdp_act {
 	NETDEV_XDP_ACT_RX_SG = 32,
 	NETDEV_XDP_ACT_NDO_XMIT_SG = 64,
 
+	/* private: */
 	NETDEV_XDP_ACT_MASK = 127,
 };
 

tools/include/uapi/linux/netdev.h

@@ -11,7 +11,7 @@
 
 /**
  * enum netdev_xdp_act
- * @NETDEV_XDP_ACT_BASIC: XDP feautues set supported by all drivers
+ * @NETDEV_XDP_ACT_BASIC: XDP features set supported by all drivers
  *   (XDP_ABORTED, XDP_DROP, XDP_PASS, XDP_TX)
  * @NETDEV_XDP_ACT_REDIRECT: The netdev supports XDP_REDIRECT
  * @NETDEV_XDP_ACT_NDO_XMIT: This feature informs if netdev implements
@@ -34,6 +34,7 @@ enum netdev_xdp_act {
 	NETDEV_XDP_ACT_RX_SG = 32,
 	NETDEV_XDP_ACT_NDO_XMIT_SG = 64,
 
+	/* private: */
 	NETDEV_XDP_ACT_MASK = 127,
 };
 

tools/net/ynl/Makefile

@@ -3,6 +3,7 @@
 SUBDIRS = lib generated samples
 
 all: $(SUBDIRS)
+	./ynl-regen.sh -f -p $(PWD)/../../../
 
 $(SUBDIRS):
 	@if [ -f "$@/Makefile" ] ; then \

tools/net/ynl/generated/netdev-user.c

@@ -50,6 +50,7 @@ struct ynl_policy_attr netdev_dev_policy[NETDEV_A_DEV_MAX + 1] = {
 	[NETDEV_A_DEV_IFINDEX] = { .name = "ifindex", .type = YNL_PT_U32, },
 	[NETDEV_A_DEV_PAD] = { .name = "pad", .type = YNL_PT_IGNORE, },
 	[NETDEV_A_DEV_XDP_FEATURES] = { .name = "xdp-features", .type = YNL_PT_U64, },
+	[NETDEV_A_DEV_XDP_ZC_MAX_SEGS] = { .name = "xdp-zc-max-segs", .type = YNL_PT_U32, },
 };
 
 struct ynl_policy_nest netdev_dev_nest = {
@@ -91,6 +92,11 @@ int netdev_dev_get_rsp_parse(const struct nlmsghdr *nlh, void *data)
 				return MNL_CB_ERROR;
 			dst->_present.xdp_features = 1;
 			dst->xdp_features = mnl_attr_get_u64(attr);
+		} else if (type == NETDEV_A_DEV_XDP_ZC_MAX_SEGS) {
+			if (ynl_attr_validate(yarg, attr))
+				return MNL_CB_ERROR;
+			dst->_present.xdp_zc_max_segs = 1;
+			dst->xdp_zc_max_segs = mnl_attr_get_u32(attr);
 		}
 	}
 

tools/net/ynl/generated/netdev-user.h

@@ -47,10 +47,12 @@ struct netdev_dev_get_rsp {
 	struct {
 		__u32 ifindex:1;
 		__u32 xdp_features:1;
+		__u32 xdp_zc_max_segs:1;
 	} _present;
 
 	__u32 ifindex;
 	__u64 xdp_features;
+	__u32 xdp_zc_max_segs;
 };
 
 void netdev_dev_get_rsp_free(struct netdev_dev_get_rsp *rsp);

tools/net/ynl/samples/netdev.c

@@ -38,6 +38,8 @@ static void netdev_print_device(struct netdev_dev_get_rsp *d, unsigned int op)
 			printf(" %s", netdev_xdp_act_str(1 << i));
 	}
 
+	printf(" xdp-zc-max-segs=%u", d->xdp_zc_max_segs);
+
 	name = netdev_op_str(op);
 	if (name)
 		printf(" (ntf: %s)", name);

tools/net/ynl/ynl-gen-c.py

@@ -2125,6 +2125,7 @@ def render_uapi(family, cw):
 
             if const.get('render-max', False):
                 cw.nl()
+                cw.p('/* private: */')
                 if const['type'] == 'flags':
                     max_name = c_upper(name_pfx + 'mask')
                     max_val = f' = {enum.get_mask()},'

tools/net/ynl/ynl-regen.sh

@@ -4,15 +4,18 @@
 TOOL=$(dirname $(realpath $0))/ynl-gen-c.py
 
 force=
+search=
 
 while [ ! -z "$1" ]; do
   case "$1" in
     -f ) force=yes; shift ;;
+    -p ) search=$2; shift 2 ;;
     * )  echo "Unrecognized option '$1'"; exit 1 ;;
   esac
 done
 
 KDIR=$(dirname $(dirname $(dirname $(dirname $(realpath $0)))))
+pushd ${search:-$KDIR} >>/dev/null
 
 files=$(git grep --files-with-matches '^/\* YNL-GEN \(kernel\|uapi\|user\)')
 for f in $files; do
@@ -30,3 +33,5 @@ for f in $files; do
     $TOOL --mode ${params[2]} --${params[3]} --spec $KDIR/${params[0]} \
 	  $args -o $f
 done
+
+popd >>/dev/null