tools: ynltool: add page-pool stats

Replace the page-pool sample with page pool support in ynltool.

 # ynltool page-pool stats
    eth0[2]	page pools: 18 (zombies: 0)
		refs: 171456 bytes: 702283776 (refs: 0 bytes: 0)
		recycling: 97.3% (alloc: 2679:6134966 recycle: 1250981:4719386)
 # ynltool -j page-pool stats | jq
 [
  {
    "ifname": "eth0",
    "ifindex": 2,
    "page_pools": 18,
    "zombies": 0,
    "live": {
      "refs": 171456,
      "bytes": 702283776
    },
    "zombie": {
      "refs": 0,
      "bytes": 0
    },
    "recycling_pct": 97.2746,
    "alloc": {
      "slow": 2679,
      "fast": 6135029
    },
    "recycle": {
      "ring": 1250997,
      "cache": 4719432
    }
  }
 ]

 # ynltool page-pool stats group-by pp
 pool id: 108  dev: eth0[2]  napi: 530
   inflight: 9472 pages 38797312 bytes
   recycling: 95.5% (alloc: 148:208379 recycle: 45386:153842)
 pool id: 107  dev: eth0[2]  napi: 529
   inflight: 9408 pages 38535168 bytes
   recycling: 94.9% (alloc: 147:180178 recycle: 42251:128808)

Signed-off-by: Jakub Kicinski <[email protected]>
Link: https://patch.msgid.link/[email protected]
Acked-by: Stanislav Fomichev <[email protected]>
Signed-off-by: Paolo Abeni <[email protected]>

Author: kuba-moo

tools/net/ynl/samples/page-pool.c

@@ -10,7 +10,7 @@ CFLAGS := -Wall -Wextra -Werror -O2
 ifeq ("$(DEBUG)","1")
   CFLAGS += -g -fsanitize=address -fsanitize=leak -static-libasan
 endif
-CFLAGS += -I../lib
+CFLAGS += -I../lib -I../generated -I../../../include/uapi/
 
 SRC_VERSION := \
 	$(shell make --no-print-directory -sC ../../../.. kernelversion || \
@@ -29,14 +29,17 @@ all: $(YNLTOOL)
 
 Q = @
 
-$(YNLTOOL): $(OBJS)
+$(YNLTOOL): ../libynl.a $(OBJS)
 	$(Q)echo -e "\tLINK $@"
-	$(Q)$(CC) $(CFLAGS) -o $@ $(OBJS)
+	$(Q)$(CC) $(CFLAGS) -o $@ $(OBJS) ../libynl.a -lmnl
 
-%.o: %.c main.h json_writer.h
+%.o: %.c ../libynl.a
 	$(Q)echo -e "\tCC $@"
 	$(Q)$(COMPILE.c) -MMD -c -o $@ $<
 
+../libynl.a:
+	$(Q)$(MAKE) -C ../
+
 clean:
 	rm -f *.o *.d *~
 

tools/net/ynl/ynltool/Makefile

@@ -47,7 +47,7 @@ static int do_help(int argc __attribute__((unused)),
 		"Usage: %s [OPTIONS] OBJECT { COMMAND | help }\n"
 		"       %s version\n"
 		"\n"
-		"       OBJECT := { }\n"
+		"       OBJECT := { page-pool }\n"
 		"       " HELP_SPEC_OPTIONS "\n"
 		"",
 		bin_name, bin_name);
@@ -71,6 +71,7 @@ static int do_version(int argc __attribute__((unused)),
 
 static const struct cmd commands[] = {
 	{ "help",	do_help },
+	{ "page-pool",	do_page_pool },
 	{ "version",	do_version },
 	{ 0 }
 };

tools/net/ynl/ynltool/main.c

@@ -59,4 +59,7 @@ struct cmd {
 int cmd_select(const struct cmd *cmds, int argc, char **argv,
 	       int (*help)(int argc, char **argv));
 
+/* subcommands */
+int do_page_pool(int argc, char **argv);
+
 #endif /* __YNLTOOL_H */