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-rw-r--r--tools/net/ynl/Makefile4
-rw-r--r--tools/net/ynl/Makefile.deps5
-rwxr-xr-xtools/net/ynl/cli.py43
-rw-r--r--tools/net/ynl/generated/Makefile9
-rw-r--r--tools/net/ynl/lib/Makefile5
-rw-r--r--tools/net/ynl/lib/__init__.py4
-rw-r--r--tools/net/ynl/lib/nlspec.py11
-rw-r--r--tools/net/ynl/lib/ynl-priv.h359
-rw-r--r--tools/net/ynl/lib/ynl.c399
-rw-r--r--tools/net/ynl/lib/ynl.h5
-rw-r--r--tools/net/ynl/lib/ynl.py311
-rw-r--r--tools/net/ynl/samples/.gitignore1
-rw-r--r--tools/net/ynl/samples/Makefile6
-rw-r--r--tools/net/ynl/samples/ovs.c60
-rw-r--r--tools/net/ynl/samples/page-pool.c2
-rwxr-xr-xtools/net/ynl/ynl-gen-c.py124
-rwxr-xr-xtools/net/ynl/ynl-gen-rst.py9
17 files changed, 968 insertions, 389 deletions
diff --git a/tools/net/ynl/Makefile b/tools/net/ynl/Makefile
index da1aa10bbcc3..8e9e09d84e26 100644
--- a/tools/net/ynl/Makefile
+++ b/tools/net/ynl/Makefile
@@ -11,11 +11,11 @@ $(SUBDIRS):
$(MAKE) -C $@ ; \
fi
-clean hardclean:
+clean distclean:
@for dir in $(SUBDIRS) ; do \
if [ -f "$$dir/Makefile" ] ; then \
$(MAKE) -C $$dir $@; \
fi \
done
-.PHONY: clean all $(SUBDIRS)
+.PHONY: all clean distclean $(SUBDIRS)
diff --git a/tools/net/ynl/Makefile.deps b/tools/net/ynl/Makefile.deps
index 3110f84dd029..07373c5a7afe 100644
--- a/tools/net/ynl/Makefile.deps
+++ b/tools/net/ynl/Makefile.deps
@@ -15,7 +15,12 @@ UAPI_PATH:=../../../../include/uapi/
get_hdr_inc=-D$(1) -include $(UAPI_PATH)/linux/$(2)
CFLAGS_devlink:=$(call get_hdr_inc,_LINUX_DEVLINK_H_,devlink.h)
+CFLAGS_dpll:=$(call get_hdr_inc,_LINUX_DPLL_H,dpll.h)
CFLAGS_ethtool:=$(call get_hdr_inc,_LINUX_ETHTOOL_NETLINK_H_,ethtool_netlink.h)
CFLAGS_handshake:=$(call get_hdr_inc,_LINUX_HANDSHAKE_H,handshake.h)
+CFLAGS_mptcp_pm:=$(call get_hdr_inc,_LINUX_MPTCP_PM_H,mptcp_pm.h)
CFLAGS_netdev:=$(call get_hdr_inc,_LINUX_NETDEV_H,netdev.h)
CFLAGS_nfsd:=$(call get_hdr_inc,_LINUX_NFSD_NETLINK_H,nfsd_netlink.h)
+CFLAGS_ovs_datapath:=$(call get_hdr_inc,__LINUX_OPENVSWITCH_H,openvswitch.h)
+CFLAGS_ovs_flow:=$(call get_hdr_inc,__LINUX_OPENVSWITCH_H,openvswitch.h)
+CFLAGS_ovs_vport:=$(call get_hdr_inc,__LINUX_OPENVSWITCH_H,openvswitch.h)
diff --git a/tools/net/ynl/cli.py b/tools/net/ynl/cli.py
index 2ad9ec0f5545..f131e33ac3ee 100755
--- a/tools/net/ynl/cli.py
+++ b/tools/net/ynl/cli.py
@@ -6,7 +6,16 @@ import json
import pprint
import time
-from lib import YnlFamily, Netlink
+from lib import YnlFamily, Netlink, NlError
+
+
+class YnlEncoder(json.JSONEncoder):
+ def default(self, obj):
+ if isinstance(obj, bytes):
+ return bytes.hex(obj)
+ if isinstance(obj, set):
+ return list(obj)
+ return json.JSONEncoder.default(self, obj)
def main():
@@ -28,8 +37,17 @@ def main():
parser.add_argument('--append', dest='flags', action='append_const',
const=Netlink.NLM_F_APPEND)
parser.add_argument('--process-unknown', action=argparse.BooleanOptionalAction)
+ parser.add_argument('--output-json', action='store_true')
+ parser.add_argument('--dbg-small-recv', default=0, const=4000,
+ action='store', nargs='?', type=int)
args = parser.parse_args()
+ def output(msg):
+ if args.output_json:
+ print(json.dumps(msg, cls=YnlEncoder))
+ else:
+ pprint.PrettyPrinter().pprint(msg)
+
if args.no_schema:
args.schema = ''
@@ -37,7 +55,10 @@ def main():
if args.json_text:
attrs = json.loads(args.json_text)
- ynl = YnlFamily(args.spec, args.schema, args.process_unknown)
+ ynl = YnlFamily(args.spec, args.schema, args.process_unknown,
+ recv_size=args.dbg_small_recv)
+ if args.dbg_small_recv:
+ ynl.set_recv_dbg(True)
if args.ntf:
ynl.ntf_subscribe(args.ntf)
@@ -45,16 +66,20 @@ def main():
if args.sleep:
time.sleep(args.sleep)
- if args.do:
- reply = ynl.do(args.do, attrs, args.flags)
- pprint.PrettyPrinter().pprint(reply)
- if args.dump:
- reply = ynl.dump(args.dump, attrs)
- pprint.PrettyPrinter().pprint(reply)
+ try:
+ if args.do:
+ reply = ynl.do(args.do, attrs, args.flags)
+ output(reply)
+ if args.dump:
+ reply = ynl.dump(args.dump, attrs)
+ output(reply)
+ except NlError as e:
+ print(e)
+ exit(1)
if args.ntf:
ynl.check_ntf()
- pprint.PrettyPrinter().pprint(ynl.async_msg_queue)
+ output(ynl.async_msg_queue)
if __name__ == "__main__":
diff --git a/tools/net/ynl/generated/Makefile b/tools/net/ynl/generated/Makefile
index 84cbabdd02a8..713f5fb9cc2d 100644
--- a/tools/net/ynl/generated/Makefile
+++ b/tools/net/ynl/generated/Makefile
@@ -14,7 +14,10 @@ YNL_GEN_ARG_ethtool:=--user-header linux/ethtool_netlink.h \
TOOL:=../ynl-gen-c.py
-GENS:=ethtool devlink handshake fou netdev nfsd
+GENS_PATHS=$(shell grep -nrI --files-without-match \
+ 'protocol: netlink' \
+ ../../../../Documentation/netlink/specs/)
+GENS=$(patsubst ../../../../Documentation/netlink/specs/%.yaml,%,${GENS_PATHS})
SRCS=$(patsubst %,%-user.c,${GENS})
HDRS=$(patsubst %,%-user.h,${GENS})
OBJS=$(patsubst %,%-user.o,${GENS})
@@ -40,11 +43,11 @@ protos.a: $(OBJS)
clean:
rm -f *.o
-hardclean: clean
+distclean: clean
rm -f *.c *.h *.a
regen:
@../ynl-regen.sh
-.PHONY: all clean hardclean regen
+.PHONY: all clean distclean regen
.DEFAULT_GOAL: all
diff --git a/tools/net/ynl/lib/Makefile b/tools/net/ynl/lib/Makefile
index d2e50fd0a52d..dfff3ecd1cba 100644
--- a/tools/net/ynl/lib/Makefile
+++ b/tools/net/ynl/lib/Makefile
@@ -17,12 +17,13 @@ ynl.a: $(OBJS)
ar rcs $@ $(OBJS)
clean:
rm -f *.o *.d *~
+ rm -rf __pycache__
-hardclean: clean
+distclean: clean
rm -f *.a
%.o: %.c
$(COMPILE.c) -MMD -c -o $@ $<
-.PHONY: all clean
+.PHONY: all clean distclean
.DEFAULT_GOAL=all
diff --git a/tools/net/ynl/lib/__init__.py b/tools/net/ynl/lib/__init__.py
index f7eaa07783e7..9137b83e580a 100644
--- a/tools/net/ynl/lib/__init__.py
+++ b/tools/net/ynl/lib/__init__.py
@@ -2,7 +2,7 @@
from .nlspec import SpecAttr, SpecAttrSet, SpecEnumEntry, SpecEnumSet, \
SpecFamily, SpecOperation
-from .ynl import YnlFamily, Netlink
+from .ynl import YnlFamily, Netlink, NlError
__all__ = ["SpecAttr", "SpecAttrSet", "SpecEnumEntry", "SpecEnumSet",
- "SpecFamily", "SpecOperation", "YnlFamily", "Netlink"]
+ "SpecFamily", "SpecOperation", "YnlFamily", "Netlink", "NlError"]
diff --git a/tools/net/ynl/lib/nlspec.py b/tools/net/ynl/lib/nlspec.py
index 44f13e383e8a..6d08ab9e213f 100644
--- a/tools/net/ynl/lib/nlspec.py
+++ b/tools/net/ynl/lib/nlspec.py
@@ -144,7 +144,7 @@ class SpecEnumSet(SpecElement):
class SpecAttr(SpecElement):
- """ Single Netlink atttribute type
+ """ Single Netlink attribute type
Represents a single attribute type within an attr space.
@@ -248,6 +248,7 @@ class SpecStructMember(SpecElement):
len integer, optional byte length of binary types
display_hint string, hint to help choose format specifier
when displaying the value
+ struct string, name of nested struct type
"""
def __init__(self, family, yaml):
super().__init__(family, yaml)
@@ -256,6 +257,7 @@ class SpecStructMember(SpecElement):
self.enum = yaml.get('enum')
self.len = yaml.get('len')
self.display_hint = yaml.get('display-hint')
+ self.struct = yaml.get('struct')
class SpecStruct(SpecElement):
@@ -306,10 +308,9 @@ class SpecSubMessage(SpecElement):
class SpecSubMessageFormat(SpecElement):
- """ Netlink sub-message definition
+ """ Netlink sub-message format definition
- Represents a set of sub-message formats for polymorphic nlattrs
- that contain type-specific sub messages.
+ Represents a single format for a sub-message.
Attributes:
value attribute value to match against type selector
@@ -417,6 +418,7 @@ class SpecFamily(SpecElement):
consts dict of all constants/enums
fixed_header string, optional name of family default fixed header struct
mcast_groups dict of all multicast groups (index by name)
+ kernel_family dict of kernel family attributes
"""
def __init__(self, spec_path, schema_path=None, exclude_ops=None):
with open(spec_path, "r") as stream:
@@ -460,6 +462,7 @@ class SpecFamily(SpecElement):
self.ntfs = collections.OrderedDict()
self.consts = collections.OrderedDict()
self.mcast_groups = collections.OrderedDict()
+ self.kernel_family = collections.OrderedDict(self.yaml.get('kernel-family', {}))
last_exception = None
while len(self._resolution_list) > 0:
diff --git a/tools/net/ynl/lib/ynl-priv.h b/tools/net/ynl/lib/ynl-priv.h
index 7491da8e7555..6cf890080dc0 100644
--- a/tools/net/ynl/lib/ynl-priv.h
+++ b/tools/net/ynl/lib/ynl-priv.h
@@ -2,16 +2,16 @@
#ifndef __YNL_C_PRIV_H
#define __YNL_C_PRIV_H 1
+#include <stdbool.h>
#include <stddef.h>
-#include <libmnl/libmnl.h>
#include <linux/types.h>
+struct ynl_parse_arg;
+
/*
* YNL internals / low level stuff
*/
-/* Generic mnl helper code */
-
enum ynl_policy_type {
YNL_PT_REJECT = 1,
YNL_PT_IGNORE,
@@ -27,6 +27,20 @@ enum ynl_policy_type {
YNL_PT_BITFIELD32,
};
+enum ynl_parse_result {
+ YNL_PARSE_CB_ERROR = -1,
+ YNL_PARSE_CB_STOP = 0,
+ YNL_PARSE_CB_OK = 1,
+};
+
+#define YNL_SOCKET_BUFFER_SIZE (1 << 17)
+
+#define YNL_ARRAY_SIZE(array) (sizeof(array) ? \
+ sizeof(array) / sizeof(array[0]) : 0)
+
+typedef int (*ynl_parse_cb_t)(const struct nlmsghdr *nlh,
+ struct ynl_parse_arg *yarg);
+
struct ynl_policy_attr {
enum ynl_policy_type type;
unsigned int len;
@@ -80,8 +94,6 @@ struct ynl_ntf_base_type {
unsigned char data[] __attribute__((aligned(8)));
};
-extern mnl_cb_t ynl_cb_array[NLMSG_MIN_TYPE];
-
struct nlmsghdr *
ynl_gemsg_start_req(struct ynl_sock *ys, __u32 id, __u8 cmd, __u8 version);
struct nlmsghdr *
@@ -89,30 +101,26 @@ ynl_gemsg_start_dump(struct ynl_sock *ys, __u32 id, __u8 cmd, __u8 version);
int ynl_attr_validate(struct ynl_parse_arg *yarg, const struct nlattr *attr);
-int ynl_recv_ack(struct ynl_sock *ys, int ret);
-int ynl_cb_null(const struct nlmsghdr *nlh, void *data);
-
/* YNL specific helpers used by the auto-generated code */
struct ynl_req_state {
struct ynl_parse_arg yarg;
- mnl_cb_t cb;
+ ynl_parse_cb_t cb;
__u32 rsp_cmd;
};
struct ynl_dump_state {
- struct ynl_sock *ys;
- struct ynl_policy_nest *rsp_policy;
+ struct ynl_parse_arg yarg;
void *first;
struct ynl_dump_list_type *last;
size_t alloc_sz;
- mnl_cb_t cb;
+ ynl_parse_cb_t cb;
__u32 rsp_cmd;
};
struct ynl_ntf_info {
struct ynl_policy_nest *policy;
- mnl_cb_t cb;
+ ynl_parse_cb_t cb;
size_t alloc_sz;
void (*free)(struct ynl_ntf_base_type *ntf);
};
@@ -125,20 +133,325 @@ int ynl_exec_dump(struct ynl_sock *ys, struct nlmsghdr *req_nlh,
void ynl_error_unknown_notification(struct ynl_sock *ys, __u8 cmd);
int ynl_error_parse(struct ynl_parse_arg *yarg, const char *msg);
-#ifndef MNL_HAS_AUTO_SCALARS
-static inline uint64_t mnl_attr_get_uint(const struct nlattr *attr)
+/* Netlink message handling helpers */
+
+#define YNL_MSG_OVERFLOW 1
+
+static inline struct nlmsghdr *ynl_nlmsg_put_header(void *buf)
+{
+ struct nlmsghdr *nlh = buf;
+
+ memset(nlh, 0, sizeof(*nlh));
+ nlh->nlmsg_len = NLMSG_HDRLEN;
+
+ return nlh;
+}
+
+static inline unsigned int ynl_nlmsg_data_len(const struct nlmsghdr *nlh)
{
- if (mnl_attr_get_payload_len(attr) == 4)
- return mnl_attr_get_u32(attr);
- return mnl_attr_get_u64(attr);
+ return nlh->nlmsg_len - NLMSG_HDRLEN;
+}
+
+static inline void *ynl_nlmsg_data(const struct nlmsghdr *nlh)
+{
+ return (unsigned char *)nlh + NLMSG_HDRLEN;
+}
+
+static inline void *
+ynl_nlmsg_data_offset(const struct nlmsghdr *nlh, unsigned int offset)
+{
+ return (unsigned char *)nlh + NLMSG_HDRLEN + offset;
+}
+
+static inline void *ynl_nlmsg_end_addr(const struct nlmsghdr *nlh)
+{
+ return (char *)nlh + nlh->nlmsg_len;
+}
+
+static inline void *
+ynl_nlmsg_put_extra_header(struct nlmsghdr *nlh, unsigned int size)
+{
+ void *tail = ynl_nlmsg_end_addr(nlh);
+
+ nlh->nlmsg_len += NLMSG_ALIGN(size);
+ return tail;
+}
+
+/* Netlink attribute helpers */
+
+static inline unsigned int ynl_attr_type(const struct nlattr *attr)
+{
+ return attr->nla_type & NLA_TYPE_MASK;
+}
+
+static inline unsigned int ynl_attr_data_len(const struct nlattr *attr)
+{
+ return attr->nla_len - NLA_HDRLEN;
+}
+
+static inline void *ynl_attr_data(const struct nlattr *attr)
+{
+ return (unsigned char *)attr + NLA_HDRLEN;
+}
+
+static inline void *ynl_attr_data_end(const struct nlattr *attr)
+{
+ return ynl_attr_data(attr) + ynl_attr_data_len(attr);
+}
+
+#define ynl_attr_for_each(attr, nlh, fixed_hdr_sz) \
+ for ((attr) = ynl_attr_first(nlh, (nlh)->nlmsg_len, \
+ NLMSG_HDRLEN + fixed_hdr_sz); attr; \
+ (attr) = ynl_attr_next(ynl_nlmsg_end_addr(nlh), attr))
+
+#define ynl_attr_for_each_nested(attr, outer) \
+ for ((attr) = ynl_attr_first(outer, outer->nla_len, \
+ sizeof(struct nlattr)); attr; \
+ (attr) = ynl_attr_next(ynl_attr_data_end(outer), attr))
+
+#define ynl_attr_for_each_payload(start, len, attr) \
+ for ((attr) = ynl_attr_first(start, len, 0); attr; \
+ (attr) = ynl_attr_next(start + len, attr))
+
+static inline struct nlattr *
+ynl_attr_if_good(const void *end, struct nlattr *attr)
+{
+ if (attr + 1 > (const struct nlattr *)end)
+ return NULL;
+ if (ynl_attr_data_end(attr) > end)
+ return NULL;
+ return attr;
+}
+
+static inline struct nlattr *
+ynl_attr_next(const void *end, const struct nlattr *prev)
+{
+ struct nlattr *attr;
+
+ attr = (void *)((char *)prev + NLA_ALIGN(prev->nla_len));
+ return ynl_attr_if_good(end, attr);
+}
+
+static inline struct nlattr *
+ynl_attr_first(const void *start, size_t len, size_t skip)
+{
+ struct nlattr *attr;
+
+ attr = (void *)((char *)start + NLMSG_ALIGN(skip));
+ return ynl_attr_if_good(start + len, attr);
+}
+
+static inline bool
+__ynl_attr_put_overflow(struct nlmsghdr *nlh, size_t size)
+{
+ bool o;
+
+ /* ynl_msg_start() stashed buffer length in nlmsg_pid. */
+ o = nlh->nlmsg_len + NLA_HDRLEN + NLMSG_ALIGN(size) > nlh->nlmsg_pid;
+ if (o)
+ /* YNL_MSG_OVERFLOW is < NLMSG_HDRLEN, all subsequent checks
+ * are guaranteed to fail.
+ */
+ nlh->nlmsg_pid = YNL_MSG_OVERFLOW;
+ return o;
+}
+
+static inline struct nlattr *
+ynl_attr_nest_start(struct nlmsghdr *nlh, unsigned int attr_type)
+{
+ struct nlattr *attr;
+
+ if (__ynl_attr_put_overflow(nlh, 0))
+ return ynl_nlmsg_end_addr(nlh) - NLA_HDRLEN;
+
+ attr = ynl_nlmsg_end_addr(nlh);
+ attr->nla_type = attr_type | NLA_F_NESTED;
+ nlh->nlmsg_len += NLA_HDRLEN;
+
+ return attr;
}
static inline void
-mnl_attr_put_uint(struct nlmsghdr *nlh, uint16_t type, uint64_t data)
+ynl_attr_nest_end(struct nlmsghdr *nlh, struct nlattr *attr)
{
- if ((uint32_t)data == (uint64_t)data)
- return mnl_attr_put_u32(nlh, type, data);
- return mnl_attr_put_u64(nlh, type, data);
+ attr->nla_len = (char *)ynl_nlmsg_end_addr(nlh) - (char *)attr;
+}
+
+static inline void
+ynl_attr_put(struct nlmsghdr *nlh, unsigned int attr_type,
+ const void *value, size_t size)
+{
+ struct nlattr *attr;
+
+ if (__ynl_attr_put_overflow(nlh, size))
+ return;
+
+ attr = ynl_nlmsg_end_addr(nlh);
+ attr->nla_type = attr_type;
+ attr->nla_len = NLA_HDRLEN + size;
+
+ memcpy(ynl_attr_data(attr), value, size);
+
+ nlh->nlmsg_len += NLMSG_ALIGN(attr->nla_len);
+}
+
+static inline void
+ynl_attr_put_str(struct nlmsghdr *nlh, unsigned int attr_type, const char *str)
+{
+ struct nlattr *attr;
+ size_t len;
+
+ len = strlen(str);
+ if (__ynl_attr_put_overflow(nlh, len))
+ return;
+
+ attr = ynl_nlmsg_end_addr(nlh);
+ attr->nla_type = attr_type;
+
+ strcpy(ynl_attr_data(attr), str);
+ attr->nla_len = NLA_HDRLEN + NLA_ALIGN(len);
+
+ nlh->nlmsg_len += NLMSG_ALIGN(attr->nla_len);
+}
+
+static inline const char *ynl_attr_get_str(const struct nlattr *attr)
+{
+ return (const char *)ynl_attr_data(attr);
+}
+
+static inline __s8 ynl_attr_get_s8(const struct nlattr *attr)
+{
+ return *(__s8 *)ynl_attr_data(attr);
+}
+
+static inline __s16 ynl_attr_get_s16(const struct nlattr *attr)
+{
+ return *(__s16 *)ynl_attr_data(attr);
+}
+
+static inline __s32 ynl_attr_get_s32(const struct nlattr *attr)
+{
+ return *(__s32 *)ynl_attr_data(attr);
+}
+
+static inline __s64 ynl_attr_get_s64(const struct nlattr *attr)
+{
+ __s64 tmp;
+
+ memcpy(&tmp, (unsigned char *)(attr + 1), sizeof(tmp));
+ return tmp;
+}
+
+static inline __u8 ynl_attr_get_u8(const struct nlattr *attr)
+{
+ return *(__u8 *)ynl_attr_data(attr);
+}
+
+static inline __u16 ynl_attr_get_u16(const struct nlattr *attr)
+{
+ return *(__u16 *)ynl_attr_data(attr);
+}
+
+static inline __u32 ynl_attr_get_u32(const struct nlattr *attr)
+{
+ return *(__u32 *)ynl_attr_data(attr);
+}
+
+static inline __u64 ynl_attr_get_u64(const struct nlattr *attr)
+{
+ __u64 tmp;
+
+ memcpy(&tmp, (unsigned char *)(attr + 1), sizeof(tmp));
+ return tmp;
+}
+
+static inline void
+ynl_attr_put_s8(struct nlmsghdr *nlh, unsigned int attr_type, __s8 value)
+{
+ ynl_attr_put(nlh, attr_type, &value, sizeof(value));
+}
+
+static inline void
+ynl_attr_put_s16(struct nlmsghdr *nlh, unsigned int attr_type, __s16 value)
+{
+ ynl_attr_put(nlh, attr_type, &value, sizeof(value));
+}
+
+static inline void
+ynl_attr_put_s32(struct nlmsghdr *nlh, unsigned int attr_type, __s32 value)
+{
+ ynl_attr_put(nlh, attr_type, &value, sizeof(value));
+}
+
+static inline void
+ynl_attr_put_s64(struct nlmsghdr *nlh, unsigned int attr_type, __s64 value)
+{
+ ynl_attr_put(nlh, attr_type, &value, sizeof(value));
+}
+
+static inline void
+ynl_attr_put_u8(struct nlmsghdr *nlh, unsigned int attr_type, __u8 value)
+{
+ ynl_attr_put(nlh, attr_type, &value, sizeof(value));
+}
+
+static inline void
+ynl_attr_put_u16(struct nlmsghdr *nlh, unsigned int attr_type, __u16 value)
+{
+ ynl_attr_put(nlh, attr_type, &value, sizeof(value));
+}
+
+static inline void
+ynl_attr_put_u32(struct nlmsghdr *nlh, unsigned int attr_type, __u32 value)
+{
+ ynl_attr_put(nlh, attr_type, &value, sizeof(value));
+}
+
+static inline void
+ynl_attr_put_u64(struct nlmsghdr *nlh, unsigned int attr_type, __u64 value)
+{
+ ynl_attr_put(nlh, attr_type, &value, sizeof(value));
+}
+
+static inline __u64 ynl_attr_get_uint(const struct nlattr *attr)
+{
+ switch (ynl_attr_data_len(attr)) {
+ case 4:
+ return ynl_attr_get_u32(attr);
+ case 8:
+ return ynl_attr_get_u64(attr);
+ default:
+ return 0;
+ }
+}
+
+static inline __s64 ynl_attr_get_sint(const struct nlattr *attr)
+{
+ switch (ynl_attr_data_len(attr)) {
+ case 4:
+ return ynl_attr_get_s32(attr);
+ case 8:
+ return ynl_attr_get_s64(attr);
+ default:
+ return 0;
+ }
+}
+
+static inline void
+ynl_attr_put_uint(struct nlmsghdr *nlh, __u16 type, __u64 data)
+{
+ if ((__u32)data == (__u64)data)
+ ynl_attr_put_u32(nlh, type, data);
+ else
+ ynl_attr_put_u64(nlh, type, data);
+}
+
+static inline void
+ynl_attr_put_sint(struct nlmsghdr *nlh, __u16 type, __s64 data)
+{
+ if ((__s32)data == (__s64)data)
+ ynl_attr_put_s32(nlh, type, data);
+ else
+ ynl_attr_put_s64(nlh, type, data);
}
-#endif
#endif
diff --git a/tools/net/ynl/lib/ynl.c b/tools/net/ynl/lib/ynl.c
index 45e49671ae87..4b9c091fc86b 100644
--- a/tools/net/ynl/lib/ynl.c
+++ b/tools/net/ynl/lib/ynl.c
@@ -3,10 +3,11 @@
#include <poll.h>
#include <string.h>
#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
#include <linux/types.h>
-
-#include <libmnl/libmnl.h>
#include <linux/genetlink.h>
+#include <sys/socket.h>
#include "ynl.h"
@@ -92,9 +93,9 @@ ynl_err_walk(struct ynl_sock *ys, void *start, void *end, unsigned int off,
data_len = end - start;
- mnl_attr_for_each_payload(start, data_len) {
+ ynl_attr_for_each_payload(start, data_len, attr) {
astart_off = (char *)attr - (char *)start;
- aend_off = astart_off + mnl_attr_get_payload_len(attr);
+ aend_off = astart_off + ynl_attr_data_len(attr);
if (aend_off <= off)
continue;
@@ -106,7 +107,7 @@ ynl_err_walk(struct ynl_sock *ys, void *start, void *end, unsigned int off,
off -= astart_off;
- type = mnl_attr_get_type(attr);
+ type = ynl_attr_type(attr);
if (ynl_err_walk_report_one(policy, type, str, str_sz, &n))
return n;
@@ -124,8 +125,8 @@ ynl_err_walk(struct ynl_sock *ys, void *start, void *end, unsigned int off,
}
off -= sizeof(struct nlattr);
- start = mnl_attr_get_payload(attr);
- end = start + mnl_attr_get_payload_len(attr);
+ start = ynl_attr_data(attr);
+ end = start + ynl_attr_data_len(attr);
return n + ynl_err_walk(ys, start, end, off, policy->table[type].nest,
&str[n], str_sz - n, nest_pol);
@@ -147,14 +148,14 @@ ynl_ext_ack_check(struct ynl_sock *ys, const struct nlmsghdr *nlh,
if (!(nlh->nlmsg_flags & NLM_F_ACK_TLVS)) {
yerr_msg(ys, "%s", strerror(ys->err.code));
- return MNL_CB_OK;
+ return YNL_PARSE_CB_OK;
}
- mnl_attr_for_each(attr, nlh, hlen) {
+ ynl_attr_for_each(attr, nlh, hlen) {
unsigned int len, type;
- len = mnl_attr_get_payload_len(attr);
- type = mnl_attr_get_type(attr);
+ len = ynl_attr_data_len(attr);
+ type = ynl_attr_type(attr);
if (type > NLMSGERR_ATTR_MAX)
continue;
@@ -166,12 +167,12 @@ ynl_ext_ack_check(struct ynl_sock *ys, const struct nlmsghdr *nlh,
case NLMSGERR_ATTR_MISS_TYPE:
case NLMSGERR_ATTR_MISS_NEST:
if (len != sizeof(__u32))
- return MNL_CB_ERROR;
+ return YNL_PARSE_CB_ERROR;
break;
case NLMSGERR_ATTR_MSG:
- str = mnl_attr_get_payload(attr);
+ str = ynl_attr_get_str(attr);
if (str[len - 1])
- return MNL_CB_ERROR;
+ return YNL_PARSE_CB_ERROR;
break;
default:
break;
@@ -185,14 +186,13 @@ ynl_ext_ack_check(struct ynl_sock *ys, const struct nlmsghdr *nlh,
unsigned int n, off;
void *start, *end;
- ys->err.attr_offs = mnl_attr_get_u32(tb[NLMSGERR_ATTR_OFFS]);
+ ys->err.attr_offs = ynl_attr_get_u32(tb[NLMSGERR_ATTR_OFFS]);
n = snprintf(bad_attr, sizeof(bad_attr), "%sbad attribute: ",
str ? " (" : "");
- start = mnl_nlmsg_get_payload_offset(ys->nlh,
- ys->family->hdr_len);
- end = mnl_nlmsg_get_payload_tail(ys->nlh);
+ start = ynl_nlmsg_data_offset(ys->nlh, ys->family->hdr_len);
+ end = ynl_nlmsg_end_addr(ys->nlh);
off = ys->err.attr_offs;
off -= sizeof(struct nlmsghdr);
@@ -211,18 +211,17 @@ ynl_ext_ack_check(struct ynl_sock *ys, const struct nlmsghdr *nlh,
void *start, *end;
int n2;
- type = mnl_attr_get_u32(tb[NLMSGERR_ATTR_MISS_TYPE]);
+ type = ynl_attr_get_u32(tb[NLMSGERR_ATTR_MISS_TYPE]);
n = snprintf(miss_attr, sizeof(miss_attr), "%smissing attribute: ",
bad_attr[0] ? ", " : (str ? " (" : ""));
- start = mnl_nlmsg_get_payload_offset(ys->nlh,
- ys->family->hdr_len);
- end = mnl_nlmsg_get_payload_tail(ys->nlh);
+ start = ynl_nlmsg_data_offset(ys->nlh, ys->family->hdr_len);
+ end = ynl_nlmsg_end_addr(ys->nlh);
nest_pol = ys->req_policy;
if (tb[NLMSGERR_ATTR_MISS_NEST]) {
- off = mnl_attr_get_u32(tb[NLMSGERR_ATTR_MISS_NEST]);
+ off = ynl_attr_get_u32(tb[NLMSGERR_ATTR_MISS_NEST]);
off -= sizeof(struct nlmsghdr);
off -= ys->family->hdr_len;
@@ -254,13 +253,13 @@ ynl_ext_ack_check(struct ynl_sock *ys, const struct nlmsghdr *nlh,
else
yerr_msg(ys, "%s", strerror(ys->err.code));
- return MNL_CB_OK;
+ return YNL_PARSE_CB_OK;
}
-static int ynl_cb_error(const struct nlmsghdr *nlh, void *data)
+static int
+ynl_cb_error(const struct nlmsghdr *nlh, struct ynl_parse_arg *yarg)
{
- const struct nlmsgerr *err = mnl_nlmsg_get_payload(nlh);
- struct ynl_parse_arg *yarg = data;
+ const struct nlmsgerr *err = ynl_nlmsg_data(nlh);
unsigned int hlen;
int code;
@@ -270,16 +269,15 @@ static int ynl_cb_error(const struct nlmsghdr *nlh, void *data)
hlen = sizeof(*err);
if (!(nlh->nlmsg_flags & NLM_F_CAPPED))
- hlen += mnl_nlmsg_get_payload_len(&err->msg);
+ hlen += ynl_nlmsg_data_len(&err->msg);
ynl_ext_ack_check(yarg->ys, nlh, hlen);
- return code ? MNL_CB_ERROR : MNL_CB_STOP;
+ return code ? YNL_PARSE_CB_ERROR : YNL_PARSE_CB_STOP;
}
-static int ynl_cb_done(const struct nlmsghdr *nlh, void *data)
+static int ynl_cb_done(const struct nlmsghdr *nlh, struct ynl_parse_arg *yarg)
{
- struct ynl_parse_arg *yarg = data;
int err;
err = *(int *)NLMSG_DATA(nlh);
@@ -289,23 +287,11 @@ static int ynl_cb_done(const struct nlmsghdr *nlh, void *data)
ynl_ext_ack_check(yarg->ys, nlh, sizeof(int));
- return MNL_CB_ERROR;
+ return YNL_PARSE_CB_ERROR;
}
- return MNL_CB_STOP;
-}
-
-static int ynl_cb_noop(const struct nlmsghdr *nlh, void *data)
-{
- return MNL_CB_OK;
+ return YNL_PARSE_CB_STOP;
}
-mnl_cb_t ynl_cb_array[NLMSG_MIN_TYPE] = {
- [NLMSG_NOOP] = ynl_cb_noop,
- [NLMSG_ERROR] = ynl_cb_error,
- [NLMSG_DONE] = ynl_cb_done,
- [NLMSG_OVERRUN] = ynl_cb_noop,
-};
-
/* Attribute validation */
int ynl_attr_validate(struct ynl_parse_arg *yarg, const struct nlattr *attr)
@@ -314,9 +300,9 @@ int ynl_attr_validate(struct ynl_parse_arg *yarg, const struct nlattr *attr)
unsigned int type, len;
unsigned char *data;
- data = mnl_attr_get_payload(attr);
- len = mnl_attr_get_payload_len(attr);
- type = mnl_attr_get_type(attr);
+ data = ynl_attr_data(attr);
+ len = ynl_attr_data_len(attr);
+ type = ynl_attr_type(attr);
if (type > yarg->rsp_policy->max_attr) {
yerr(yarg->ys, YNL_ERROR_INTERNAL,
"Internal error, validating unknown attribute");
@@ -413,14 +399,38 @@ struct nlmsghdr *ynl_msg_start(struct ynl_sock *ys, __u32 id, __u16 flags)
ynl_err_reset(ys);
- nlh = ys->nlh = mnl_nlmsg_put_header(ys->tx_buf);
+ nlh = ys->nlh = ynl_nlmsg_put_header(ys->tx_buf);
nlh->nlmsg_type = id;
nlh->nlmsg_flags = flags;
nlh->nlmsg_seq = ++ys->seq;
+ /* This is a local YNL hack for length checking, we put the buffer
+ * length in nlmsg_pid, since messages sent to the kernel always use
+ * PID 0. Message needs to be terminated with ynl_msg_end().
+ */
+ nlh->nlmsg_pid = YNL_SOCKET_BUFFER_SIZE;
+
return nlh;
}
+static int ynl_msg_end(struct ynl_sock *ys, struct nlmsghdr *nlh)
+{
+ /* We stash buffer length in nlmsg_pid. */
+ if (nlh->nlmsg_pid == 0) {
+ yerr(ys, YNL_ERROR_INPUT_INVALID,
+ "Unknown input buffer length");
+ return -EINVAL;
+ }
+ if (nlh->nlmsg_pid == YNL_MSG_OVERFLOW) {
+ yerr(ys, YNL_ERROR_INPUT_TOO_BIG,
+ "Constructed message longer than internal buffer");
+ return -EMSGSIZE;
+ }
+
+ nlh->nlmsg_pid = 0;
+ return 0;
+}
+
struct nlmsghdr *
ynl_gemsg_start(struct ynl_sock *ys, __u32 id, __u16 flags,
__u8 cmd, __u8 version)
@@ -435,7 +445,7 @@ ynl_gemsg_start(struct ynl_sock *ys, __u32 id, __u16 flags,
gehdr.cmd = cmd;
gehdr.version = version;
- data = mnl_nlmsg_put_extra_header(nlh, sizeof(gehdr));
+ data = ynl_nlmsg_put_extra_header(nlh, sizeof(gehdr));
memcpy(data, &gehdr, sizeof(gehdr));
return nlh;
@@ -464,33 +474,85 @@ ynl_gemsg_start_dump(struct ynl_sock *ys, __u32 id, __u8 cmd, __u8 version)
cmd, version);
}
-int ynl_recv_ack(struct ynl_sock *ys, int ret)
+static int ynl_cb_null(const struct nlmsghdr *nlh, struct ynl_parse_arg *yarg)
{
- struct ynl_parse_arg yarg = { .ys = ys, };
+ yerr(yarg->ys, YNL_ERROR_UNEXPECT_MSG,
+ "Received a message when none were expected");
- if (!ret) {
- yerr(ys, YNL_ERROR_EXPECT_ACK,
- "Expecting an ACK but nothing received");
- return -1;
+ return YNL_PARSE_CB_ERROR;
+}
+
+static int
+__ynl_sock_read_msgs(struct ynl_parse_arg *yarg, ynl_parse_cb_t cb, int flags)
+{
+ struct ynl_sock *ys = yarg->ys;
+ const struct nlmsghdr *nlh;
+ ssize_t len, rem;
+ int ret;
+
+ len = recv(ys->socket, ys->rx_buf, YNL_SOCKET_BUFFER_SIZE, flags);
+ if (len < 0) {
+ if (flags & MSG_DONTWAIT && errno == EAGAIN)
+ return YNL_PARSE_CB_STOP;
+ return len;
}
- ret = mnl_socket_recvfrom(ys->sock, ys->rx_buf, MNL_SOCKET_BUFFER_SIZE);
- if (ret < 0) {
- perr(ys, "Socket receive failed");
- return ret;
+ ret = YNL_PARSE_CB_STOP;
+ for (rem = len; rem > 0; NLMSG_NEXT(nlh, rem)) {
+ nlh = (struct nlmsghdr *)&ys->rx_buf[len - rem];
+ if (!NLMSG_OK(nlh, rem)) {
+ yerr(yarg->ys, YNL_ERROR_INV_RESP,
+ "Invalid message or trailing data in the response.");
+ return YNL_PARSE_CB_ERROR;
+ }
+
+ if (nlh->nlmsg_flags & NLM_F_DUMP_INTR) {
+ /* TODO: handle this better */
+ yerr(yarg->ys, YNL_ERROR_DUMP_INTER,
+ "Dump interrupted / inconsistent, please retry.");
+ return YNL_PARSE_CB_ERROR;
+ }
+
+ switch (nlh->nlmsg_type) {
+ case 0:
+ yerr(yarg->ys, YNL_ERROR_INV_RESP,
+ "Invalid message type in the response.");
+ return YNL_PARSE_CB_ERROR;
+ case NLMSG_NOOP:
+ case NLMSG_OVERRUN ... NLMSG_MIN_TYPE - 1:
+ ret = YNL_PARSE_CB_OK;
+ break;
+ case NLMSG_ERROR:
+ ret = ynl_cb_error(nlh, yarg);
+ break;
+ case NLMSG_DONE:
+ ret = ynl_cb_done(nlh, yarg);
+ break;
+ default:
+ ret = cb(nlh, yarg);
+ break;
+ }
}
- return mnl_cb_run(ys->rx_buf, ret, ys->seq, ys->portid,
- ynl_cb_null, &yarg);
+
+ return ret;
}
-int ynl_cb_null(const struct nlmsghdr *nlh, void *data)
+static int ynl_sock_read_msgs(struct ynl_parse_arg *yarg, ynl_parse_cb_t cb)
{
- struct ynl_parse_arg *yarg = data;
+ return __ynl_sock_read_msgs(yarg, cb, 0);
+}
- yerr(yarg->ys, YNL_ERROR_UNEXPECT_MSG,
- "Received a message when none were expected");
+static int ynl_recv_ack(struct ynl_sock *ys, int ret)
+{
+ struct ynl_parse_arg yarg = { .ys = ys, };
- return MNL_CB_ERROR;
+ if (!ret) {
+ yerr(ys, YNL_ERROR_EXPECT_ACK,
+ "Expecting an ACK but nothing received");
+ return -1;
+ }
+
+ return ynl_sock_read_msgs(&yarg, ynl_cb_null);
}
/* Init/fini and genetlink boiler plate */
@@ -500,7 +562,7 @@ ynl_get_family_info_mcast(struct ynl_sock *ys, const struct nlattr *mcasts)
const struct nlattr *entry, *attr;
unsigned int i;
- mnl_attr_for_each_nested(attr, mcasts)
+ ynl_attr_for_each_nested(attr, mcasts)
ys->n_mcast_groups++;
if (!ys->n_mcast_groups)
@@ -509,16 +571,16 @@ ynl_get_family_info_mcast(struct ynl_sock *ys, const struct nlattr *mcasts)
ys->mcast_groups = calloc(ys->n_mcast_groups,
sizeof(*ys->mcast_groups));
if (!ys->mcast_groups)
- return MNL_CB_ERROR;
+ return YNL_PARSE_CB_ERROR;
i = 0;
- mnl_attr_for_each_nested(entry, mcasts) {
- mnl_attr_for_each_nested(attr, entry) {
- if (mnl_attr_get_type(attr) == CTRL_ATTR_MCAST_GRP_ID)
- ys->mcast_groups[i].id = mnl_attr_get_u32(attr);
- if (mnl_attr_get_type(attr) == CTRL_ATTR_MCAST_GRP_NAME) {
+ ynl_attr_for_each_nested(entry, mcasts) {
+ ynl_attr_for_each_nested(attr, entry) {
+ if (ynl_attr_type(attr) == CTRL_ATTR_MCAST_GRP_ID)
+ ys->mcast_groups[i].id = ynl_attr_get_u32(attr);
+ if (ynl_attr_type(attr) == CTRL_ATTR_MCAST_GRP_NAME) {
strncpy(ys->mcast_groups[i].name,
- mnl_attr_get_str(attr),
+ ynl_attr_get_str(attr),
GENL_NAMSIZ - 1);
ys->mcast_groups[i].name[GENL_NAMSIZ - 1] = 0;
}
@@ -529,35 +591,35 @@ ynl_get_family_info_mcast(struct ynl_sock *ys, const struct nlattr *mcasts)
return 0;
}
-static int ynl_get_family_info_cb(const struct nlmsghdr *nlh, void *data)
+static int
+ynl_get_family_info_cb(const struct nlmsghdr *nlh, struct ynl_parse_arg *yarg)
{
- struct ynl_parse_arg *yarg = data;
struct ynl_sock *ys = yarg->ys;
const struct nlattr *attr;
bool found_id = true;
- mnl_attr_for_each(attr, nlh, sizeof(struct genlmsghdr)) {
- if (mnl_attr_get_type(attr) == CTRL_ATTR_MCAST_GROUPS)
+ ynl_attr_for_each(attr, nlh, sizeof(struct genlmsghdr)) {
+ if (ynl_attr_type(attr) == CTRL_ATTR_MCAST_GROUPS)
if (ynl_get_family_info_mcast(ys, attr))
- return MNL_CB_ERROR;
+ return YNL_PARSE_CB_ERROR;
- if (mnl_attr_get_type(attr) != CTRL_ATTR_FAMILY_ID)
+ if (ynl_attr_type(attr) != CTRL_ATTR_FAMILY_ID)
continue;
- if (mnl_attr_get_payload_len(attr) != sizeof(__u16)) {
+ if (ynl_attr_data_len(attr) != sizeof(__u16)) {
yerr(ys, YNL_ERROR_ATTR_INVALID, "Invalid family ID");
- return MNL_CB_ERROR;
+ return YNL_PARSE_CB_ERROR;
}
- ys->family_id = mnl_attr_get_u16(attr);
+ ys->family_id = ynl_attr_get_u16(attr);
found_id = true;
}
if (!found_id) {
yerr(ys, YNL_ERROR_ATTR_MISSING, "Family ID missing");
- return MNL_CB_ERROR;
+ return YNL_PARSE_CB_ERROR;
}
- return MNL_CB_OK;
+ return YNL_PARSE_CB_OK;
}
static int ynl_sock_read_family(struct ynl_sock *ys, const char *family_name)
@@ -567,22 +629,19 @@ static int ynl_sock_read_family(struct ynl_sock *ys, const char *family_name)
int err;
nlh = ynl_gemsg_start_req(ys, GENL_ID_CTRL, CTRL_CMD_GETFAMILY, 1);
- mnl_attr_put_strz(nlh, CTRL_ATTR_FAMILY_NAME, family_name);
+ ynl_attr_put_str(nlh, CTRL_ATTR_FAMILY_NAME, family_name);
+
+ err = ynl_msg_end(ys, nlh);
+ if (err < 0)
+ return err;
- err = mnl_socket_sendto(ys->sock, nlh, nlh->nlmsg_len);
+ err = send(ys->socket, nlh, nlh->nlmsg_len, 0);
if (err < 0) {
perr(ys, "failed to request socket family info");
return err;
}
- err = mnl_socket_recvfrom(ys->sock, ys->rx_buf, MNL_SOCKET_BUFFER_SIZE);
- if (err <= 0) {
- perr(ys, "failed to receive the socket family info");
- return err;
- }
- err = mnl_cb_run2(ys->rx_buf, err, ys->seq, ys->portid,
- ynl_get_family_info_cb, &yarg,
- ynl_cb_array, ARRAY_SIZE(ynl_cb_array));
+ err = ynl_sock_read_msgs(&yarg, ynl_get_family_info_cb);
if (err < 0) {
free(ys->mcast_groups);
perr(ys, "failed to receive the socket family info - no such family?");
@@ -601,38 +660,54 @@ static int ynl_sock_read_family(struct ynl_sock *ys, const char *family_name)
struct ynl_sock *
ynl_sock_create(const struct ynl_family *yf, struct ynl_error *yse)
{
+ struct sockaddr_nl addr;
struct ynl_sock *ys;
+ socklen_t addrlen;
int one = 1;
- ys = malloc(sizeof(*ys) + 2 * MNL_SOCKET_BUFFER_SIZE);
+ ys = malloc(sizeof(*ys) + 2 * YNL_SOCKET_BUFFER_SIZE);
if (!ys)
return NULL;
memset(ys, 0, sizeof(*ys));
ys->family = yf;
ys->tx_buf = &ys->raw_buf[0];
- ys->rx_buf = &ys->raw_buf[MNL_SOCKET_BUFFER_SIZE];
+ ys->rx_buf = &ys->raw_buf[YNL_SOCKET_BUFFER_SIZE];
ys->ntf_last_next = &ys->ntf_first;
- ys->sock = mnl_socket_open(NETLINK_GENERIC);
- if (!ys->sock) {
+ ys->socket = socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC);
+ if (ys->socket < 0) {
__perr(yse, "failed to create a netlink socket");
goto err_free_sock;
}
- if (mnl_socket_setsockopt(ys->sock, NETLINK_CAP_ACK,
- &one, sizeof(one))) {
+ if (setsockopt(ys->socket, SOL_NETLINK, NETLINK_CAP_ACK,
+ &one, sizeof(one))) {
__perr(yse, "failed to enable netlink ACK");
goto err_close_sock;
}
- if (mnl_socket_setsockopt(ys->sock, NETLINK_EXT_ACK,
- &one, sizeof(one))) {
+ if (setsockopt(ys->socket, SOL_NETLINK, NETLINK_EXT_ACK,
+ &one, sizeof(one))) {
__perr(yse, "failed to enable netlink ext ACK");
goto err_close_sock;
}
+ memset(&addr, 0, sizeof(addr));
+ addr.nl_family = AF_NETLINK;
+ if (bind(ys->socket, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
+ __perr(yse, "unable to bind to a socket address");
+ goto err_close_sock;;
+ }
+
+ memset(&addr, 0, sizeof(addr));
+ addrlen = sizeof(addr);
+ if (getsockname(ys->socket, (struct sockaddr *)&addr, &addrlen) < 0) {
+ __perr(yse, "unable to read socket address");
+ goto err_close_sock;;
+ }
+ ys->portid = addr.nl_pid;
ys->seq = random();
- ys->portid = mnl_socket_get_portid(ys->sock);
+
if (ynl_sock_read_family(ys, yf->name)) {
if (yse)
@@ -643,7 +718,7 @@ ynl_sock_create(const struct ynl_family *yf, struct ynl_error *yse)
return ys;
err_close_sock:
- mnl_socket_close(ys->sock);
+ close(ys->socket);
err_free_sock:
free(ys);
return NULL;
@@ -653,7 +728,7 @@ void ynl_sock_destroy(struct ynl_sock *ys)
{
struct ynl_ntf_base_type *ntf;
- mnl_socket_close(ys->sock);
+ close(ys->socket);
while ((ntf = ynl_ntf_dequeue(ys)))
ynl_ntf_free(ntf);
free(ys->mcast_groups);
@@ -680,9 +755,9 @@ int ynl_subscribe(struct ynl_sock *ys, const char *grp_name)
return -1;
}
- err = mnl_socket_setsockopt(ys->sock, NETLINK_ADD_MEMBERSHIP,
- &ys->mcast_groups[i].id,
- sizeof(ys->mcast_groups[i].id));
+ err = setsockopt(ys->socket, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP,
+ &ys->mcast_groups[i].id,
+ sizeof(ys->mcast_groups[i].id));
if (err < 0) {
perr(ys, "Subscribing to multicast group failed");
return -1;
@@ -693,7 +768,7 @@ int ynl_subscribe(struct ynl_sock *ys, const char *grp_name)
int ynl_socket_get_fd(struct ynl_sock *ys)
{
- return mnl_socket_get_fd(ys->sock);
+ return ys->socket;
}
struct ynl_ntf_base_type *ynl_ntf_dequeue(struct ynl_sock *ys)
@@ -719,12 +794,12 @@ static int ynl_ntf_parse(struct ynl_sock *ys, const struct nlmsghdr *nlh)
struct genlmsghdr *gehdr;
int ret;
- gehdr = mnl_nlmsg_get_payload(nlh);
+ gehdr = ynl_nlmsg_data(nlh);
if (gehdr->cmd >= ys->family->ntf_info_size)
- return MNL_CB_ERROR;
+ return YNL_PARSE_CB_ERROR;
info = &ys->family->ntf_info[gehdr->cmd];
if (!info->cb)
- return MNL_CB_ERROR;
+ return YNL_PARSE_CB_ERROR;
rsp = calloc(1, info->alloc_sz);
rsp->free = info->free;
@@ -732,7 +807,7 @@ static int ynl_ntf_parse(struct ynl_sock *ys, const struct nlmsghdr *nlh)
yarg.rsp_policy = info->policy;
ret = info->cb(nlh, &yarg);
- if (ret <= MNL_CB_STOP)
+ if (ret <= YNL_PARSE_CB_STOP)
goto err_free;
rsp->family = nlh->nlmsg_type;
@@ -741,46 +816,27 @@ static int ynl_ntf_parse(struct ynl_sock *ys, const struct nlmsghdr *nlh)
*ys->ntf_last_next = rsp;
ys->ntf_last_next = &rsp->next;
- return MNL_CB_OK;
+ return YNL_PARSE_CB_OK;
err_free:
info->free(rsp);
- return MNL_CB_ERROR;
+ return YNL_PARSE_CB_ERROR;
}
-static int ynl_ntf_trampoline(const struct nlmsghdr *nlh, void *data)
+static int
+ynl_ntf_trampoline(const struct nlmsghdr *nlh, struct ynl_parse_arg *yarg)
{
- struct ynl_parse_arg *yarg = data;
-
return ynl_ntf_parse(yarg->ys, nlh);
}
int ynl_ntf_check(struct ynl_sock *ys)
{
struct ynl_parse_arg yarg = { .ys = ys, };
- ssize_t len;
int err;
do {
- /* libmnl doesn't let us pass flags to the recv to make
- * it non-blocking so we need to poll() or peek() :|
- */
- struct pollfd pfd = { };
-
- pfd.fd = mnl_socket_get_fd(ys->sock);
- pfd.events = POLLIN;
- err = poll(&pfd, 1, 1);
- if (err < 1)
- return err;
-
- len = mnl_socket_recvfrom(ys->sock, ys->rx_buf,
- MNL_SOCKET_BUFFER_SIZE);
- if (len < 0)
- return len;
-
- err = mnl_cb_run2(ys->rx_buf, len, ys->seq, ys->portid,
- ynl_ntf_trampoline, &yarg,
- ynl_cb_array, NLMSG_MIN_TYPE);
+ err = __ynl_sock_read_msgs(&yarg, ynl_ntf_trampoline,
+ MSG_DONTWAIT);
if (err < 0)
return err;
} while (err > 0);
@@ -801,7 +857,7 @@ void ynl_error_unknown_notification(struct ynl_sock *ys, __u8 cmd)
int ynl_error_parse(struct ynl_parse_arg *yarg, const char *msg)
{
yerr(yarg->ys, YNL_ERROR_INV_RESP, "Error parsing response: %s", msg);
- return MNL_CB_ERROR;
+ return YNL_PARSE_CB_ERROR;
}
static int
@@ -809,27 +865,28 @@ ynl_check_alien(struct ynl_sock *ys, const struct nlmsghdr *nlh, __u32 rsp_cmd)
{
struct genlmsghdr *gehdr;
- if (mnl_nlmsg_get_payload_len(nlh) < sizeof(*gehdr)) {
+ if (ynl_nlmsg_data_len(nlh) < sizeof(*gehdr)) {
yerr(ys, YNL_ERROR_INV_RESP,
"Kernel responded with truncated message");
return -1;
}
- gehdr = mnl_nlmsg_get_payload(nlh);
+ gehdr = ynl_nlmsg_data(nlh);
if (gehdr->cmd != rsp_cmd)
return ynl_ntf_parse(ys, nlh);
return 0;
}
-static int ynl_req_trampoline(const struct nlmsghdr *nlh, void *data)
+static
+int ynl_req_trampoline(const struct nlmsghdr *nlh, struct ynl_parse_arg *yarg)
{
- struct ynl_req_state *yrs = data;
+ struct ynl_req_state *yrs = (void *)yarg;
int ret;
ret = ynl_check_alien(yrs->yarg.ys, nlh, yrs->rsp_cmd);
if (ret)
- return ret < 0 ? MNL_CB_ERROR : MNL_CB_OK;
+ return ret < 0 ? YNL_PARSE_CB_ERROR : YNL_PARSE_CB_OK;
return yrs->cb(nlh, &yrs->yarg);
}
@@ -837,43 +894,38 @@ static int ynl_req_trampoline(const struct nlmsghdr *nlh, void *data)
int ynl_exec(struct ynl_sock *ys, struct nlmsghdr *req_nlh,
struct ynl_req_state *yrs)
{
- ssize_t len;
int err;
- err = mnl_socket_sendto(ys->sock, req_nlh, req_nlh->nlmsg_len);
+ err = ynl_msg_end(ys, req_nlh);
+ if (err < 0)
+ return err;
+
+ err = send(ys->socket, req_nlh, req_nlh->nlmsg_len, 0);
if (err < 0)
return err;
do {
- len = mnl_socket_recvfrom(ys->sock, ys->rx_buf,
- MNL_SOCKET_BUFFER_SIZE);
- if (len < 0)
- return len;
-
- err = mnl_cb_run2(ys->rx_buf, len, ys->seq, ys->portid,
- ynl_req_trampoline, yrs,
- ynl_cb_array, NLMSG_MIN_TYPE);
- if (err < 0)
- return err;
+ err = ynl_sock_read_msgs(&yrs->yarg, ynl_req_trampoline);
} while (err > 0);
- return 0;
+ return err;
}
-static int ynl_dump_trampoline(const struct nlmsghdr *nlh, void *data)
+static int
+ynl_dump_trampoline(const struct nlmsghdr *nlh, struct ynl_parse_arg *data)
{
- struct ynl_dump_state *ds = data;
+ struct ynl_dump_state *ds = (void *)data;
struct ynl_dump_list_type *obj;
struct ynl_parse_arg yarg = {};
int ret;
- ret = ynl_check_alien(ds->ys, nlh, ds->rsp_cmd);
+ ret = ynl_check_alien(ds->yarg.ys, nlh, ds->rsp_cmd);
if (ret)
- return ret < 0 ? MNL_CB_ERROR : MNL_CB_OK;
+ return ret < 0 ? YNL_PARSE_CB_ERROR : YNL_PARSE_CB_OK;
obj = calloc(1, ds->alloc_sz);
if (!obj)
- return MNL_CB_ERROR;
+ return YNL_PARSE_CB_ERROR;
if (!ds->first)
ds->first = obj;
@@ -881,8 +933,7 @@ static int ynl_dump_trampoline(const struct nlmsghdr *nlh, void *data)
ds->last->next = obj;
ds->last = obj;
- yarg.ys = ds->ys;
- yarg.rsp_policy = ds->rsp_policy;
+ yarg = ds->yarg;
yarg.data = &obj->data;
return ds->cb(nlh, &yarg);
@@ -900,22 +951,18 @@ static void *ynl_dump_end(struct ynl_dump_state *ds)
int ynl_exec_dump(struct ynl_sock *ys, struct nlmsghdr *req_nlh,
struct ynl_dump_state *yds)
{
- ssize_t len;
int err;
- err = mnl_socket_sendto(ys->sock, req_nlh, req_nlh->nlmsg_len);
+ err = ynl_msg_end(ys, req_nlh);
if (err < 0)
return err;
- do {
- len = mnl_socket_recvfrom(ys->sock, ys->rx_buf,
- MNL_SOCKET_BUFFER_SIZE);
- if (len < 0)
- goto err_close_list;
+ err = send(ys->socket, req_nlh, req_nlh->nlmsg_len, 0);
+ if (err < 0)
+ return err;
- err = mnl_cb_run2(ys->rx_buf, len, ys->seq, ys->portid,
- ynl_dump_trampoline, yds,
- ynl_cb_array, NLMSG_MIN_TYPE);
+ do {
+ err = ynl_sock_read_msgs(&yds->yarg, ynl_dump_trampoline);
if (err < 0)
goto err_close_list;
} while (err > 0);
diff --git a/tools/net/ynl/lib/ynl.h b/tools/net/ynl/lib/ynl.h
index ce77a6d76ce0..9842e85a8c57 100644
--- a/tools/net/ynl/lib/ynl.h
+++ b/tools/net/ynl/lib/ynl.h
@@ -12,6 +12,7 @@ enum ynl_error_code {
YNL_ERROR_NONE = 0,
__YNL_ERRNO_END = 4096,
YNL_ERROR_INTERNAL,
+ YNL_ERROR_DUMP_INTER,
YNL_ERROR_EXPECT_ACK,
YNL_ERROR_EXPECT_MSG,
YNL_ERROR_UNEXPECT_MSG,
@@ -19,6 +20,8 @@ enum ynl_error_code {
YNL_ERROR_ATTR_INVALID,
YNL_ERROR_UNKNOWN_NTF,
YNL_ERROR_INV_RESP,
+ YNL_ERROR_INPUT_INVALID,
+ YNL_ERROR_INPUT_TOO_BIG,
};
/**
@@ -58,7 +61,7 @@ struct ynl_sock {
/* private: */
const struct ynl_family *family;
- struct mnl_socket *sock;
+ int socket;
__u32 seq;
__u32 portid;
__u16 family_id;
diff --git a/tools/net/ynl/lib/ynl.py b/tools/net/ynl/lib/ynl.py
index 1e10512b2117..5fa7957f6e0f 100644
--- a/tools/net/ynl/lib/ynl.py
+++ b/tools/net/ynl/lib/ynl.py
@@ -7,6 +7,7 @@ import random
import socket
import struct
from struct import Struct
+import sys
import yaml
import ipaddress
import uuid
@@ -84,6 +85,10 @@ class NlError(Exception):
return f"Netlink error: {os.strerror(-self.nl_msg.error)}\n{self.nl_msg}"
+class ConfigError(Exception):
+ pass
+
+
class NlAttr:
ScalarFormat = namedtuple('ScalarFormat', ['native', 'big', 'little'])
type_formats = {
@@ -113,20 +118,6 @@ class NlAttr:
else format.little
return format.native
- @classmethod
- def formatted_string(cls, raw, display_hint):
- if display_hint == 'mac':
- formatted = ':'.join('%02x' % b for b in raw)
- elif display_hint == 'hex':
- formatted = bytes.hex(raw, ' ')
- elif display_hint in [ 'ipv4', 'ipv6' ]:
- formatted = format(ipaddress.ip_address(raw))
- elif display_hint == 'uuid':
- formatted = str(uuid.UUID(bytes=raw))
- else:
- formatted = raw
- return formatted
-
def as_scalar(self, attr_type, byte_order=None):
format = self.get_format(attr_type, byte_order)
return format.unpack(self.raw)[0]
@@ -148,23 +139,6 @@ class NlAttr:
format = self.get_format(type)
return [ x[0] for x in format.iter_unpack(self.raw) ]
- def as_struct(self, members):
- value = dict()
- offset = 0
- for m in members:
- # TODO: handle non-scalar members
- if m.type == 'binary':
- decoded = self.raw[offset : offset + m['len']]
- offset += m['len']
- elif m.type in NlAttr.type_formats:
- format = self.get_format(m.type, m.byte_order)
- [ decoded ] = format.unpack_from(self.raw, offset)
- offset += format.size
- if m.display_hint:
- decoded = self.formatted_string(decoded, m.display_hint)
- value[m.name] = decoded
- return value
-
def __repr__(self):
return f"[type:{self.type} len:{self._len}] {self.raw}"
@@ -244,11 +218,11 @@ class NlMsg:
return self.nl_type
def __repr__(self):
- msg = f"nl_len = {self.nl_len} ({len(self.raw)}) nl_flags = 0x{self.nl_flags:x} nl_type = {self.nl_type}\n"
+ msg = f"nl_len = {self.nl_len} ({len(self.raw)}) nl_flags = 0x{self.nl_flags:x} nl_type = {self.nl_type}"
if self.error:
- msg += '\terror: ' + str(self.error)
+ msg += '\n\terror: ' + str(self.error)
if self.extack:
- msg += '\textack: ' + repr(self.extack)
+ msg += '\n\textack: ' + repr(self.extack)
return msg
@@ -370,7 +344,7 @@ class NetlinkProtocol:
fixed_header_size = 0
if ynl:
op = ynl.rsp_by_value[msg.cmd()]
- fixed_header_size = ynl._fixed_header_size(op.fixed_header)
+ fixed_header_size = ynl._struct_size(op.fixed_header)
msg.raw_attrs = NlAttrs(msg.raw, fixed_header_size)
return msg
@@ -379,6 +353,9 @@ class NetlinkProtocol:
raise Exception(f'Multicast group "{mcast_name}" not present in the spec')
return mcast_groups[mcast_name].value
+ def msghdr_size(self):
+ return 16
+
class GenlProtocol(NetlinkProtocol):
def __init__(self, family_name):
@@ -404,6 +381,28 @@ class GenlProtocol(NetlinkProtocol):
raise Exception(f'Multicast group "{mcast_name}" not present in the family')
return self.genl_family['mcast'][mcast_name]
+ def msghdr_size(self):
+ return super().msghdr_size() + 4
+
+
+class SpaceAttrs:
+ SpecValuesPair = namedtuple('SpecValuesPair', ['spec', 'values'])
+
+ def __init__(self, attr_space, attrs, outer = None):
+ outer_scopes = outer.scopes if outer else []
+ inner_scope = self.SpecValuesPair(attr_space, attrs)
+ self.scopes = [inner_scope] + outer_scopes
+
+ def lookup(self, name):
+ for scope in self.scopes:
+ if name in scope.spec:
+ if name in scope.values:
+ return scope.values[name]
+ spec_name = scope.spec.yaml['name']
+ raise Exception(
+ f"No value for '{name}' in attribute space '{spec_name}'")
+ raise Exception(f"Attribute '{name}' not defined in any attribute-set")
+
#
# YNL implementation details.
@@ -411,7 +410,8 @@ class GenlProtocol(NetlinkProtocol):
class YnlFamily(SpecFamily):
- def __init__(self, def_path, schema=None, process_unknown=False):
+ def __init__(self, def_path, schema=None, process_unknown=False,
+ recv_size=0):
super().__init__(def_path, schema)
self.include_raw = False
@@ -426,6 +426,17 @@ class YnlFamily(SpecFamily):
except KeyError:
raise Exception(f"Family '{self.yaml['name']}' not supported by the kernel")
+ self._recv_dbg = False
+ # Note that netlink will use conservative (min) message size for
+ # the first dump recv() on the socket, our setting will only matter
+ # from the second recv() on.
+ self._recv_size = recv_size if recv_size else 131072
+ # Netlink will always allocate at least PAGE_SIZE - sizeof(skb_shinfo)
+ # for a message, so smaller receive sizes will lead to truncation.
+ # Note that the min size for other families may be larger than 4k!
+ if self._recv_size < 4000:
+ raise ConfigError()
+
self.sock = socket.socket(socket.AF_NETLINK, socket.SOCK_RAW, self.nlproto.proto_num)
self.sock.setsockopt(Netlink.SOL_NETLINK, Netlink.NETLINK_CAP_ACK, 1)
self.sock.setsockopt(Netlink.SOL_NETLINK, Netlink.NETLINK_EXT_ACK, 1)
@@ -449,18 +460,61 @@ class YnlFamily(SpecFamily):
self.sock.setsockopt(Netlink.SOL_NETLINK, Netlink.NETLINK_ADD_MEMBERSHIP,
mcast_id)
- def _add_attr(self, space, name, value):
+ def set_recv_dbg(self, enabled):
+ self._recv_dbg = enabled
+
+ def _recv_dbg_print(self, reply, nl_msgs):
+ if not self._recv_dbg:
+ return
+ print("Recv: read", len(reply), "bytes,",
+ len(nl_msgs.msgs), "messages", file=sys.stderr)
+ for nl_msg in nl_msgs:
+ print(" ", nl_msg, file=sys.stderr)
+
+ def _encode_enum(self, attr_spec, value):
+ enum = self.consts[attr_spec['enum']]
+ if enum.type == 'flags' or attr_spec.get('enum-as-flags', False):
+ scalar = 0
+ if isinstance(value, str):
+ value = [value]
+ for single_value in value:
+ scalar += enum.entries[single_value].user_value(as_flags = True)
+ return scalar
+ else:
+ return enum.entries[value].user_value()
+
+ def _get_scalar(self, attr_spec, value):
+ try:
+ return int(value)
+ except (ValueError, TypeError) as e:
+ if 'enum' not in attr_spec:
+ raise e
+ return self._encode_enum(attr_spec, value)
+
+ def _add_attr(self, space, name, value, search_attrs):
try:
attr = self.attr_sets[space][name]
except KeyError:
raise Exception(f"Space '{space}' has no attribute '{name}'")
nl_type = attr.value
+
+ if attr.is_multi and isinstance(value, list):
+ attr_payload = b''
+ for subvalue in value:
+ attr_payload += self._add_attr(space, name, subvalue, search_attrs)
+ return attr_payload
+
if attr["type"] == 'nest':
nl_type |= Netlink.NLA_F_NESTED
attr_payload = b''
+ sub_attrs = SpaceAttrs(self.attr_sets[space], value, search_attrs)
for subname, subvalue in value.items():
- attr_payload += self._add_attr(attr['nested-attributes'], subname, subvalue)
+ attr_payload += self._add_attr(attr['nested-attributes'],
+ subname, subvalue, sub_attrs)
elif attr["type"] == 'flag':
+ if not value:
+ # If value is absent or false then skip attribute creation.
+ return b''
attr_payload = b''
elif attr["type"] == 'string':
attr_payload = str(value).encode('ascii') + b'\x00'
@@ -469,18 +523,36 @@ class YnlFamily(SpecFamily):
attr_payload = value
elif isinstance(value, str):
attr_payload = bytes.fromhex(value)
+ elif isinstance(value, dict) and attr.struct_name:
+ attr_payload = self._encode_struct(attr.struct_name, value)
else:
raise Exception(f'Unknown type for binary attribute, value: {value}')
- elif attr.is_auto_scalar:
- scalar = int(value)
- real_type = attr["type"][0] + ('32' if scalar.bit_length() <= 32 else '64')
- format = NlAttr.get_format(real_type, attr.byte_order)
- attr_payload = format.pack(int(value))
- elif attr['type'] in NlAttr.type_formats:
- format = NlAttr.get_format(attr['type'], attr.byte_order)
- attr_payload = format.pack(int(value))
+ elif attr['type'] in NlAttr.type_formats or attr.is_auto_scalar:
+ scalar = self._get_scalar(attr, value)
+ if attr.is_auto_scalar:
+ attr_type = attr["type"][0] + ('32' if scalar.bit_length() <= 32 else '64')
+ else:
+ attr_type = attr["type"]
+ format = NlAttr.get_format(attr_type, attr.byte_order)
+ attr_payload = format.pack(scalar)
elif attr['type'] in "bitfield32":
- attr_payload = struct.pack("II", int(value["value"]), int(value["selector"]))
+ scalar_value = self._get_scalar(attr, value["value"])
+ scalar_selector = self._get_scalar(attr, value["selector"])
+ attr_payload = struct.pack("II", scalar_value, scalar_selector)
+ elif attr['type'] == 'sub-message':
+ msg_format = self._resolve_selector(attr, search_attrs)
+ attr_payload = b''
+ if msg_format.fixed_header:
+ attr_payload += self._encode_struct(msg_format.fixed_header, value)
+ if msg_format.attr_set:
+ if msg_format.attr_set in self.attr_sets:
+ nl_type |= Netlink.NLA_F_NESTED
+ sub_attrs = SpaceAttrs(msg_format.attr_set, value, search_attrs)
+ for subname, subvalue in value.items():
+ attr_payload += self._add_attr(msg_format.attr_set,
+ subname, subvalue, sub_attrs)
+ else:
+ raise Exception(f"Unknown attribute-set '{msg_format.attr_set}'")
else:
raise Exception(f'Unknown type at {space} {name} {value} {attr["type"]}')
@@ -503,17 +575,13 @@ class YnlFamily(SpecFamily):
def _decode_binary(self, attr, attr_spec):
if attr_spec.struct_name:
- members = self.consts[attr_spec.struct_name]
- decoded = attr.as_struct(members)
- for m in members:
- if m.enum:
- decoded[m.name] = self._decode_enum(decoded[m.name], m)
+ decoded = self._decode_struct(attr.raw, attr_spec.struct_name)
elif attr_spec.sub_type:
decoded = attr.as_c_array(attr_spec.sub_type)
else:
decoded = attr.as_bin()
if attr_spec.display_hint:
- decoded = NlAttr.formatted_string(decoded, attr_spec.display_hint)
+ decoded = self._formatted_string(decoded, attr_spec.display_hint)
return decoded
def _decode_array_nest(self, attr, attr_spec):
@@ -527,6 +595,16 @@ class YnlFamily(SpecFamily):
decoded.append({ item.type: subattrs })
return decoded
+ def _decode_nest_type_value(self, attr, attr_spec):
+ decoded = {}
+ value = attr
+ for name in attr_spec['type-value']:
+ value = NlAttr(value.raw, 0)
+ decoded[name] = value.type
+ subattrs = self._decode(NlAttrs(value.raw), attr_spec['nested-attributes'])
+ decoded.update(subattrs)
+ return decoded
+
def _decode_unknown(self, attr):
if attr.is_nest:
return self._decode(NlAttrs(attr.raw), None)
@@ -548,29 +626,27 @@ class YnlFamily(SpecFamily):
else:
rsp[name] = [decoded]
- def _resolve_selector(self, attr_spec, vals):
+ def _resolve_selector(self, attr_spec, search_attrs):
sub_msg = attr_spec.sub_message
if sub_msg not in self.sub_msgs:
raise Exception(f"No sub-message spec named {sub_msg} for {attr_spec.name}")
sub_msg_spec = self.sub_msgs[sub_msg]
selector = attr_spec.selector
- if selector not in vals:
- raise Exception(f"There is no value for {selector} to resolve '{attr_spec.name}'")
- value = vals[selector]
+ value = search_attrs.lookup(selector)
if value not in sub_msg_spec.formats:
raise Exception(f"No message format for '{value}' in sub-message spec '{sub_msg}'")
spec = sub_msg_spec.formats[value]
return spec
- def _decode_sub_msg(self, attr, attr_spec, rsp):
- msg_format = self._resolve_selector(attr_spec, rsp)
+ def _decode_sub_msg(self, attr, attr_spec, search_attrs):
+ msg_format = self._resolve_selector(attr_spec, search_attrs)
decoded = {}
offset = 0
if msg_format.fixed_header:
- decoded.update(self._decode_fixed_header(attr, msg_format.fixed_header));
- offset = self._fixed_header_size(msg_format.fixed_header)
+ decoded.update(self._decode_struct(attr.raw, msg_format.fixed_header));
+ offset = self._struct_size(msg_format.fixed_header)
if msg_format.attr_set:
if msg_format.attr_set in self.attr_sets:
subdict = self._decode(NlAttrs(attr.raw, offset), msg_format.attr_set)
@@ -579,10 +655,12 @@ class YnlFamily(SpecFamily):
raise Exception(f"Unknown attribute-set '{attr_space}' when decoding '{attr_spec.name}'")
return decoded
- def _decode(self, attrs, space):
+ def _decode(self, attrs, space, outer_attrs = None):
+ rsp = dict()
if space:
attr_space = self.attr_sets[space]
- rsp = dict()
+ search_attrs = SpaceAttrs(attr_space, rsp, outer_attrs)
+
for attr in attrs:
try:
attr_spec = attr_space.attrs_by_val[attr.type]
@@ -594,7 +672,7 @@ class YnlFamily(SpecFamily):
continue
if attr_spec["type"] == 'nest':
- subdict = self._decode(NlAttrs(attr.raw), attr_spec['nested-attributes'])
+ subdict = self._decode(NlAttrs(attr.raw), attr_spec['nested-attributes'], search_attrs)
decoded = subdict
elif attr_spec["type"] == 'string':
decoded = attr.as_strz()
@@ -617,7 +695,9 @@ class YnlFamily(SpecFamily):
selector = self._decode_enum(selector, attr_spec)
decoded = {"value": value, "selector": selector}
elif attr_spec["type"] == 'sub-message':
- decoded = self._decode_sub_msg(attr, attr_spec, rsp)
+ decoded = self._decode_sub_msg(attr, attr_spec, search_attrs)
+ elif attr_spec["type"] == 'nest-type-value':
+ decoded = self._decode_nest_type_value(attr, attr_spec)
else:
if not self.process_unknown:
raise Exception(f'Unknown {attr_spec["type"]} with name {attr_spec["name"]}')
@@ -658,20 +738,23 @@ class YnlFamily(SpecFamily):
return
msg = self.nlproto.decode(self, NlMsg(request, 0, op.attr_set))
- offset = 20 + self._fixed_header_size(op.fixed_header)
+ offset = self.nlproto.msghdr_size() + self._struct_size(op.fixed_header)
path = self._decode_extack_path(msg.raw_attrs, op.attr_set, offset,
extack['bad-attr-offs'])
if path:
del extack['bad-attr-offs']
extack['bad-attr'] = path
- def _fixed_header_size(self, name):
+ def _struct_size(self, name):
if name:
- fixed_header_members = self.consts[name].members
+ members = self.consts[name].members
size = 0
- for m in fixed_header_members:
+ for m in members:
if m.type in ['pad', 'binary']:
- size += m.len
+ if m.struct:
+ size += self._struct_size(m.struct)
+ else:
+ size += m.len
else:
format = NlAttr.get_format(m.type, m.byte_order)
size += format.size
@@ -679,26 +762,71 @@ class YnlFamily(SpecFamily):
else:
return 0
- def _decode_fixed_header(self, msg, name):
- fixed_header_members = self.consts[name].members
- fixed_header_attrs = dict()
+ def _decode_struct(self, data, name):
+ members = self.consts[name].members
+ attrs = dict()
offset = 0
- for m in fixed_header_members:
+ for m in members:
value = None
if m.type == 'pad':
offset += m.len
elif m.type == 'binary':
- value = msg.raw[offset : offset + m.len]
- offset += m.len
+ if m.struct:
+ len = self._struct_size(m.struct)
+ value = self._decode_struct(data[offset : offset + len],
+ m.struct)
+ offset += len
+ else:
+ value = data[offset : offset + m.len]
+ offset += m.len
else:
format = NlAttr.get_format(m.type, m.byte_order)
- [ value ] = format.unpack_from(msg.raw, offset)
+ [ value ] = format.unpack_from(data, offset)
offset += format.size
if value is not None:
if m.enum:
value = self._decode_enum(value, m)
- fixed_header_attrs[m.name] = value
- return fixed_header_attrs
+ elif m.display_hint:
+ value = self._formatted_string(value, m.display_hint)
+ attrs[m.name] = value
+ return attrs
+
+ def _encode_struct(self, name, vals):
+ members = self.consts[name].members
+ attr_payload = b''
+ for m in members:
+ value = vals.pop(m.name) if m.name in vals else None
+ if m.type == 'pad':
+ attr_payload += bytearray(m.len)
+ elif m.type == 'binary':
+ if m.struct:
+ if value is None:
+ value = dict()
+ attr_payload += self._encode_struct(m.struct, value)
+ else:
+ if value is None:
+ attr_payload += bytearray(m.len)
+ else:
+ attr_payload += bytes.fromhex(value)
+ else:
+ if value is None:
+ value = 0
+ format = NlAttr.get_format(m.type, m.byte_order)
+ attr_payload += format.pack(value)
+ return attr_payload
+
+ def _formatted_string(self, raw, display_hint):
+ if display_hint == 'mac':
+ formatted = ':'.join('%02x' % b for b in raw)
+ elif display_hint == 'hex':
+ formatted = bytes.hex(raw, ' ')
+ elif display_hint in [ 'ipv4', 'ipv6' ]:
+ formatted = format(ipaddress.ip_address(raw))
+ elif display_hint == 'uuid':
+ formatted = str(uuid.UUID(bytes=raw))
+ else:
+ formatted = raw
+ return formatted
def handle_ntf(self, decoded):
msg = dict()
@@ -707,7 +835,7 @@ class YnlFamily(SpecFamily):
op = self.rsp_by_value[decoded.cmd()]
attrs = self._decode(decoded.raw_attrs, op.attr_set.name)
if op.fixed_header:
- attrs.update(self._decode_fixed_header(decoded, op.fixed_header))
+ attrs.update(self._decode_struct(decoded.raw, op.fixed_header))
msg['name'] = op['name']
msg['msg'] = attrs
@@ -716,11 +844,12 @@ class YnlFamily(SpecFamily):
def check_ntf(self):
while True:
try:
- reply = self.sock.recv(128 * 1024, socket.MSG_DONTWAIT)
+ reply = self.sock.recv(self._recv_size, socket.MSG_DONTWAIT)
except BlockingIOError:
return
nms = NlMsgs(reply)
+ self._recv_dbg_print(reply, nms)
for nl_msg in nms:
if nl_msg.error:
print("Netlink error in ntf!?", os.strerror(-nl_msg.error))
@@ -759,20 +888,11 @@ class YnlFamily(SpecFamily):
req_seq = random.randint(1024, 65535)
msg = self.nlproto.message(nl_flags, op.req_value, 1, req_seq)
- fixed_header_members = []
if op.fixed_header:
- fixed_header_members = self.consts[op.fixed_header].members
- for m in fixed_header_members:
- value = vals.pop(m.name) if m.name in vals else 0
- if m.type == 'pad':
- msg += bytearray(m.len)
- elif m.type == 'binary':
- msg += bytes.fromhex(value)
- else:
- format = NlAttr.get_format(m.type, m.byte_order)
- msg += format.pack(value)
+ msg += self._encode_struct(op.fixed_header, vals)
+ search_attrs = SpaceAttrs(op.attr_set, vals)
for name, value in vals.items():
- msg += self._add_attr(op.attr_set.name, name, value)
+ msg += self._add_attr(op.attr_set.name, name, value, search_attrs)
msg = _genl_msg_finalize(msg)
self.sock.send(msg, 0)
@@ -780,8 +900,9 @@ class YnlFamily(SpecFamily):
done = False
rsp = []
while not done:
- reply = self.sock.recv(128 * 1024)
+ reply = self.sock.recv(self._recv_size)
nms = NlMsgs(reply, attr_space=op.attr_set)
+ self._recv_dbg_print(reply, nms)
for nl_msg in nms:
if nl_msg.extack:
self._decode_extack(msg, op, nl_msg.extack)
@@ -808,7 +929,7 @@ class YnlFamily(SpecFamily):
rsp_msg = self._decode(decoded.raw_attrs, op.attr_set.name)
if op.fixed_header:
- rsp_msg.update(self._decode_fixed_header(decoded, op.fixed_header))
+ rsp_msg.update(self._decode_struct(decoded.raw, op.fixed_header))
rsp.append(rsp_msg)
if not rsp:
diff --git a/tools/net/ynl/samples/.gitignore b/tools/net/ynl/samples/.gitignore
index 49637b26c482..dda6686257a7 100644
--- a/tools/net/ynl/samples/.gitignore
+++ b/tools/net/ynl/samples/.gitignore
@@ -1,4 +1,5 @@
ethtool
devlink
netdev
+ovs
page-pool \ No newline at end of file
diff --git a/tools/net/ynl/samples/Makefile b/tools/net/ynl/samples/Makefile
index 28bdb1557a54..e194a7565861 100644
--- a/tools/net/ynl/samples/Makefile
+++ b/tools/net/ynl/samples/Makefile
@@ -9,7 +9,7 @@ ifeq ("$(DEBUG)","1")
CFLAGS += -g -fsanitize=address -fsanitize=leak -static-libasan
endif
-LDLIBS=-lmnl ../lib/ynl.a ../generated/protos.a
+LDLIBS=../lib/ynl.a ../generated/protos.a
SRCS=$(wildcard *.c)
BINS=$(patsubst %.c,%,${SRCS})
@@ -28,8 +28,8 @@ $(BINS): ../lib/ynl.a ../generated/protos.a $(SRCS)
clean:
rm -f *.o *.d *~
-hardclean: clean
+distclean: clean
rm -f $(BINS)
-.PHONY: all clean
+.PHONY: all clean distclean
.DEFAULT_GOAL=all
diff --git a/tools/net/ynl/samples/ovs.c b/tools/net/ynl/samples/ovs.c
new file mode 100644
index 000000000000..3e975c003d77
--- /dev/null
+++ b/tools/net/ynl/samples/ovs.c
@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <stdio.h>
+#include <string.h>
+
+#include <ynl.h>
+
+#include "ovs_datapath-user.h"
+
+int main(int argc, char **argv)
+{
+ struct ynl_sock *ys;
+ int err;
+
+ ys = ynl_sock_create(&ynl_ovs_datapath_family, NULL);
+ if (!ys)
+ return 1;
+
+ if (argc > 1) {
+ struct ovs_datapath_new_req *req;
+
+ req = ovs_datapath_new_req_alloc();
+ if (!req)
+ goto err_close;
+
+ ovs_datapath_new_req_set_upcall_pid(req, 1);
+ ovs_datapath_new_req_set_name(req, argv[1]);
+
+ err = ovs_datapath_new(ys, req);
+ ovs_datapath_new_req_free(req);
+ if (err)
+ goto err_close;
+ } else {
+ struct ovs_datapath_get_req_dump *req;
+ struct ovs_datapath_get_list *dps;
+
+ printf("Dump:\n");
+ req = ovs_datapath_get_req_dump_alloc();
+
+ dps = ovs_datapath_get_dump(ys, req);
+ ovs_datapath_get_req_dump_free(req);
+ if (!dps)
+ goto err_close;
+
+ ynl_dump_foreach(dps, dp) {
+ printf(" %s(%d): pid:%u cache:%u\n",
+ dp->name, dp->_hdr.dp_ifindex,
+ dp->upcall_pid, dp->masks_cache_size);
+ }
+ ovs_datapath_get_list_free(dps);
+ }
+
+ ynl_sock_destroy(ys);
+
+ return 0;
+
+err_close:
+ fprintf(stderr, "YNL (%d): %s\n", ys->err.code, ys->err.msg);
+ ynl_sock_destroy(ys);
+ return 2;
+}
diff --git a/tools/net/ynl/samples/page-pool.c b/tools/net/ynl/samples/page-pool.c
index 098b5190d0e5..332f281ee5cb 100644
--- a/tools/net/ynl/samples/page-pool.c
+++ b/tools/net/ynl/samples/page-pool.c
@@ -95,6 +95,8 @@ int main(int argc, char **argv)
if (pp->_present.alloc_fast)
s->alloc_fast += pp->alloc_fast;
+ if (pp->_present.alloc_refill)
+ s->alloc_fast += pp->alloc_refill;
if (pp->_present.alloc_slow)
s->alloc_slow += pp->alloc_slow;
if (pp->_present.recycle_ring)
diff --git a/tools/net/ynl/ynl-gen-c.py b/tools/net/ynl/ynl-gen-c.py
index 7fc1aa788f6f..6b7eb2d2aaf1 100755
--- a/tools/net/ynl/ynl-gen-c.py
+++ b/tools/net/ynl/ynl-gen-c.py
@@ -40,14 +40,6 @@ class BaseNlLib:
def get_family_id(self):
return 'ys->family_id'
- def parse_cb_run(self, cb, data, is_dump=False, indent=1):
- ind = '\n\t\t' + '\t' * indent + ' '
- if is_dump:
- return f"mnl_cb_run2(ys->rx_buf, len, 0, 0, {cb}, {data},{ind}ynl_cb_array, NLMSG_MIN_TYPE)"
- else:
- return f"mnl_cb_run2(ys->rx_buf, len, ys->seq, ys->portid,{ind}{cb}, {data},{ind}" + \
- "ynl_cb_array, NLMSG_MIN_TYPE)"
-
class Type(SpecAttr):
def __init__(self, family, attr_set, attr, value):
@@ -88,6 +80,8 @@ class Type(SpecAttr):
value = self.checks.get(limit, default)
if value is None:
return value
+ elif value in self.family.consts:
+ return c_upper(f"{self.family['name']}-{value}")
if not isinstance(value, int):
value = limit_to_number(value)
return value
@@ -168,15 +162,6 @@ class Type(SpecAttr):
spec = self._attr_policy(policy)
cw.p(f"\t[{self.enum_name}] = {spec},")
- def _mnl_type(self):
- # mnl does not have helpers for signed integer types
- # turn signed type into unsigned
- # this only makes sense for scalar types
- t = self.type
- if t[0] == 's':
- t = 'u' + t[1:]
- return t
-
def _attr_typol(self):
raise Exception(f"Type policy not implemented for class type {self.type}")
@@ -192,7 +177,7 @@ class Type(SpecAttr):
ri.cw.p(f"{line};")
def _attr_put_simple(self, ri, var, put_type):
- line = f"mnl_attr_put_{put_type}(nlh, {self.enum_name}, {var}->{self.c_name})"
+ line = f"ynl_attr_put_{put_type}(nlh, {self.enum_name}, {var}->{self.c_name})"
self._attr_put_line(ri, var, line)
def attr_put(self, ri, var):
@@ -217,7 +202,7 @@ class Type(SpecAttr):
if not self.is_multi_val():
ri.cw.p("if (ynl_attr_validate(yarg, attr))")
- ri.cw.p("return MNL_CB_ERROR;")
+ ri.cw.p("return YNL_PARSE_CB_ERROR;")
if self.presence_type() == 'bit':
ri.cw.p(f"{var}->_present.{self.c_name} = 1;")
@@ -264,7 +249,7 @@ class TypeUnused(Type):
return []
def _attr_get(self, ri, var):
- return ['return MNL_CB_ERROR;'], None, None
+ return ['return YNL_PARSE_CB_ERROR;'], None, None
def _attr_typol(self):
return '.type = YNL_PT_REJECT, '
@@ -357,9 +342,6 @@ class TypeScalar(Type):
else:
self.type_name = '__' + self.type
- def mnl_type(self):
- return self._mnl_type()
-
def _attr_policy(self, policy):
if 'flags-mask' in self.checks or self.is_bitfield:
if self.is_bitfield:
@@ -387,10 +369,10 @@ class TypeScalar(Type):
return [f'{self.type_name} {self.c_name}{self.byte_order_comment}']
def attr_put(self, ri, var):
- self._attr_put_simple(ri, var, self.mnl_type())
+ self._attr_put_simple(ri, var, self.type)
def _attr_get(self, ri, var):
- return f"{var}->{self.c_name} = mnl_attr_get_{self.mnl_type()}(attr);", None, None
+ return f"{var}->{self.c_name} = ynl_attr_get_{self.type}(attr);", None, None
def _setter_lines(self, ri, member, presence):
return [f"{member} = {self.c_name};"]
@@ -404,7 +386,7 @@ class TypeFlag(Type):
return '.type = YNL_PT_FLAG, '
def attr_put(self, ri, var):
- self._attr_put_line(ri, var, f"mnl_attr_put(nlh, {self.enum_name}, 0, NULL)")
+ self._attr_put_line(ri, var, f"ynl_attr_put(nlh, {self.enum_name}, NULL, 0)")
def _attr_get(self, ri, var):
return [], None, None
@@ -446,15 +428,15 @@ class TypeString(Type):
cw.p(f"\t[{self.enum_name}] = {spec},")
def attr_put(self, ri, var):
- self._attr_put_simple(ri, var, 'strz')
+ self._attr_put_simple(ri, var, 'str')
def _attr_get(self, ri, var):
len_mem = var + '->_present.' + self.c_name + '_len'
return [f"{len_mem} = len;",
f"{var}->{self.c_name} = malloc(len + 1);",
- f"memcpy({var}->{self.c_name}, mnl_attr_get_str(attr), len);",
+ f"memcpy({var}->{self.c_name}, ynl_attr_get_str(attr), len);",
f"{var}->{self.c_name}[len] = 0;"], \
- ['len = strnlen(mnl_attr_get_str(attr), mnl_attr_get_payload_len(attr));'], \
+ ['len = strnlen(ynl_attr_get_str(attr), ynl_attr_data_len(attr));'], \
['unsigned int len;']
def _setter_lines(self, ri, member, presence):
@@ -493,15 +475,15 @@ class TypeBinary(Type):
return mem
def attr_put(self, ri, var):
- self._attr_put_line(ri, var, f"mnl_attr_put(nlh, {self.enum_name}, " +
- f"{var}->_present.{self.c_name}_len, {var}->{self.c_name})")
+ self._attr_put_line(ri, var, f"ynl_attr_put(nlh, {self.enum_name}, " +
+ f"{var}->{self.c_name}, {var}->_present.{self.c_name}_len)")
def _attr_get(self, ri, var):
len_mem = var + '->_present.' + self.c_name + '_len'
return [f"{len_mem} = len;",
f"{var}->{self.c_name} = malloc(len);",
- f"memcpy({var}->{self.c_name}, mnl_attr_get_payload(attr), len);"], \
- ['len = mnl_attr_get_payload_len(attr);'], \
+ f"memcpy({var}->{self.c_name}, ynl_attr_data(attr), len);"], \
+ ['len = ynl_attr_data_len(attr);'], \
['unsigned int len;']
def _setter_lines(self, ri, member, presence):
@@ -526,11 +508,11 @@ class TypeBitfield32(Type):
return f"NLA_POLICY_BITFIELD32({mask})"
def attr_put(self, ri, var):
- line = f"mnl_attr_put(nlh, {self.enum_name}, sizeof(struct nla_bitfield32), &{var}->{self.c_name})"
+ line = f"ynl_attr_put(nlh, {self.enum_name}, &{var}->{self.c_name}, sizeof(struct nla_bitfield32))"
self._attr_put_line(ri, var, line)
def _attr_get(self, ri, var):
- return f"memcpy(&{var}->{self.c_name}, mnl_attr_get_payload(attr), sizeof(struct nla_bitfield32));", None, None
+ return f"memcpy(&{var}->{self.c_name}, ynl_attr_data(attr), sizeof(struct nla_bitfield32));", None, None
def _setter_lines(self, ri, member, presence):
return [f"memcpy(&{member}, {self.c_name}, sizeof(struct nla_bitfield32));"]
@@ -563,7 +545,7 @@ class TypeNest(Type):
def _attr_get(self, ri, var):
get_lines = [f"if ({self.nested_render_name}_parse(&parg, attr))",
- "return MNL_CB_ERROR;"]
+ "return YNL_PARSE_CB_ERROR;"]
init_lines = [f"parg.rsp_policy = &{self.nested_render_name}_nest;",
f"parg.data = &{var}->{self.c_name};"]
return get_lines, init_lines, None
@@ -589,9 +571,6 @@ class TypeMultiAttr(Type):
def presence_type(self):
return 'count'
- def mnl_type(self):
- return self._mnl_type()
-
def _complex_member_type(self, ri):
if 'type' not in self.attr or self.attr['type'] == 'nest':
return self.nested_struct_type
@@ -625,9 +604,9 @@ class TypeMultiAttr(Type):
def attr_put(self, ri, var):
if self.attr['type'] in scalars:
- put_type = self.mnl_type()
+ put_type = self.type
ri.cw.p(f"for (unsigned int i = 0; i < {var}->n_{self.c_name}; i++)")
- ri.cw.p(f"mnl_attr_put_{put_type}(nlh, {self.enum_name}, {var}->{self.c_name}[i]);")
+ ri.cw.p(f"ynl_attr_put_{put_type}(nlh, {self.enum_name}, {var}->{self.c_name}[i]);")
elif 'type' not in self.attr or self.attr['type'] == 'nest':
ri.cw.p(f"for (unsigned int i = 0; i < {var}->n_{self.c_name}; i++)")
self._attr_put_line(ri, var, f"{self.nested_render_name}_put(nlh, " +
@@ -665,7 +644,7 @@ class TypeArrayNest(Type):
def _attr_get(self, ri, var):
local_vars = ['const struct nlattr *attr2;']
get_lines = [f'attr_{self.c_name} = attr;',
- 'mnl_attr_for_each_nested(attr2, attr)',
+ 'ynl_attr_for_each_nested(attr2, attr)',
f'\t{var}->n_{self.c_name}++;']
return get_lines, None, local_vars
@@ -690,8 +669,8 @@ class TypeNestTypeValue(Type):
local_vars += [f'__u32 {", ".join(tv_names)};']
for level in self.attr["type-value"]:
level = c_lower(level)
- get_lines += [f'attr_{level} = mnl_attr_get_payload({prev});']
- get_lines += [f'{level} = mnl_attr_get_type(attr_{level});']
+ get_lines += [f'attr_{level} = ynl_attr_data({prev});']
+ get_lines += [f'{level} = ynl_attr_type(attr_{level});']
prev = 'attr_' + level
tv_args = f", {', '.join(tv_names)}"
@@ -1550,7 +1529,7 @@ def _put_enum_to_str_helper(cw, render_name, map_name, arg_name, enum=None):
cw.block_start()
if enum and enum.type == 'flags':
cw.p(f'{arg_name} = ffs({arg_name}) - 1;')
- cw.p(f'if ({arg_name} < 0 || {arg_name} >= (int)MNL_ARRAY_SIZE({map_name}))')
+ cw.p(f'if ({arg_name} < 0 || {arg_name} >= (int)YNL_ARRAY_SIZE({map_name}))')
cw.p('return NULL;')
cw.p(f'return {map_name}[{arg_name}];')
cw.block_end()
@@ -1612,12 +1591,12 @@ def put_req_nested(ri, struct):
ri.cw.block_start()
ri.cw.write_func_lvar('struct nlattr *nest;')
- ri.cw.p("nest = mnl_attr_nest_start(nlh, attr_type);")
+ ri.cw.p("nest = ynl_attr_nest_start(nlh, attr_type);")
for _, arg in struct.member_list():
arg.attr_put(ri, "obj")
- ri.cw.p("mnl_attr_nest_end(nlh, nest);")
+ ri.cw.p("ynl_attr_nest_end(nlh, nest);")
ri.cw.nl()
ri.cw.p('return 0;')
@@ -1627,11 +1606,11 @@ def put_req_nested(ri, struct):
def _multi_parse(ri, struct, init_lines, local_vars):
if struct.nested:
- iter_line = "mnl_attr_for_each_nested(attr, nested)"
+ iter_line = "ynl_attr_for_each_nested(attr, nested)"
else:
if ri.fixed_hdr:
local_vars += ['void *hdr;']
- iter_line = "mnl_attr_for_each(attr, nlh, yarg->ys->family->hdr_len)"
+ iter_line = "ynl_attr_for_each(attr, nlh, yarg->ys->family->hdr_len)"
array_nests = set()
multi_attrs = set()
@@ -1665,7 +1644,7 @@ def _multi_parse(ri, struct, init_lines, local_vars):
ri.cw.p(f'dst->{arg} = {arg};')
if ri.fixed_hdr:
- ri.cw.p('hdr = mnl_nlmsg_get_payload_offset(nlh, sizeof(struct genlmsghdr));')
+ ri.cw.p('hdr = ynl_nlmsg_data_offset(nlh, sizeof(struct genlmsghdr));')
ri.cw.p(f"memcpy(&dst->_hdr, hdr, sizeof({ri.fixed_hdr}));")
for anest in sorted(all_multi):
aspec = struct[anest]
@@ -1674,7 +1653,7 @@ def _multi_parse(ri, struct, init_lines, local_vars):
ri.cw.nl()
ri.cw.block_start(line=iter_line)
- ri.cw.p('unsigned int type = mnl_attr_get_type(attr);')
+ ri.cw.p('unsigned int type = ynl_attr_type(attr);')
ri.cw.nl()
first = True
@@ -1690,14 +1669,14 @@ def _multi_parse(ri, struct, init_lines, local_vars):
aspec = struct[anest]
ri.cw.block_start(line=f"if (n_{aspec.c_name})")
- ri.cw.p(f"dst->{aspec.c_name} = calloc({aspec.c_name}, sizeof(*dst->{aspec.c_name}));")
+ ri.cw.p(f"dst->{aspec.c_name} = calloc(n_{aspec.c_name}, sizeof(*dst->{aspec.c_name}));")
ri.cw.p(f"dst->n_{aspec.c_name} = n_{aspec.c_name};")
ri.cw.p('i = 0;')
ri.cw.p(f"parg.rsp_policy = &{aspec.nested_render_name}_nest;")
- ri.cw.block_start(line=f"mnl_attr_for_each_nested(attr, attr_{aspec.c_name})")
+ ri.cw.block_start(line=f"ynl_attr_for_each_nested(attr, attr_{aspec.c_name})")
ri.cw.p(f"parg.data = &dst->{aspec.c_name}[i];")
- ri.cw.p(f"if ({aspec.nested_render_name}_parse(&parg, attr, mnl_attr_get_type(attr)))")
- ri.cw.p('return MNL_CB_ERROR;')
+ ri.cw.p(f"if ({aspec.nested_render_name}_parse(&parg, attr, ynl_attr_type(attr)))")
+ ri.cw.p('return YNL_PARSE_CB_ERROR;')
ri.cw.p('i++;')
ri.cw.block_end()
ri.cw.block_end()
@@ -1712,13 +1691,13 @@ def _multi_parse(ri, struct, init_lines, local_vars):
if 'nested-attributes' in aspec:
ri.cw.p(f"parg.rsp_policy = &{aspec.nested_render_name}_nest;")
ri.cw.block_start(line=iter_line)
- ri.cw.block_start(line=f"if (mnl_attr_get_type(attr) == {aspec.enum_name})")
+ ri.cw.block_start(line=f"if (ynl_attr_type(attr) == {aspec.enum_name})")
if 'nested-attributes' in aspec:
ri.cw.p(f"parg.data = &dst->{aspec.c_name}[i];")
ri.cw.p(f"if ({aspec.nested_render_name}_parse(&parg, attr))")
- ri.cw.p('return MNL_CB_ERROR;')
+ ri.cw.p('return YNL_PARSE_CB_ERROR;')
elif aspec.type in scalars:
- ri.cw.p(f"dst->{aspec.c_name}[i] = mnl_attr_get_{aspec.mnl_type()}(attr);")
+ ri.cw.p(f"dst->{aspec.c_name}[i] = ynl_attr_get_{aspec.type}(attr);")
else:
raise Exception('Nest parsing type not supported yet')
ri.cw.p('i++;')
@@ -1730,7 +1709,7 @@ def _multi_parse(ri, struct, init_lines, local_vars):
if struct.nested:
ri.cw.p('return 0;')
else:
- ri.cw.p('return MNL_CB_OK;')
+ ri.cw.p('return YNL_PARSE_CB_OK;')
ri.cw.block_end()
ri.cw.nl()
@@ -1760,10 +1739,9 @@ def parse_rsp_msg(ri, deref=False):
return
func_args = ['const struct nlmsghdr *nlh',
- 'void *data']
+ 'struct ynl_parse_arg *yarg']
local_vars = [f'{type_name(ri, "reply", deref=deref)} *dst;',
- 'struct ynl_parse_arg *yarg = data;',
'const struct nlattr *attr;']
init_lines = ['dst = yarg->data;']
@@ -1774,7 +1752,7 @@ def parse_rsp_msg(ri, deref=False):
else:
# Empty reply
ri.cw.block_start()
- ri.cw.p('return MNL_CB_OK;')
+ ri.cw.p('return YNL_PARSE_CB_OK;')
ri.cw.block_end()
ri.cw.nl()
@@ -1809,7 +1787,7 @@ def print_req(ri):
if ri.fixed_hdr:
ri.cw.p("hdr_len = sizeof(req->_hdr);")
- ri.cw.p("hdr = mnl_nlmsg_put_extra_header(nlh, hdr_len);")
+ ri.cw.p("hdr = ynl_nlmsg_put_extra_header(nlh, hdr_len);")
ri.cw.p("memcpy(hdr, &req->_hdr, hdr_len);")
ri.cw.nl()
@@ -1859,20 +1837,21 @@ def print_dump(ri):
ri.cw.write_func_lvar(local_vars)
- ri.cw.p('yds.ys = ys;')
+ ri.cw.p('yds.yarg.ys = ys;')
+ ri.cw.p(f"yds.yarg.rsp_policy = &{ri.struct['reply'].render_name}_nest;")
+ ri.cw.p("yds.yarg.data = NULL;")
ri.cw.p(f"yds.alloc_sz = sizeof({type_name(ri, rdir(direction))});")
ri.cw.p(f"yds.cb = {op_prefix(ri, 'reply', deref=True)}_parse;")
if ri.op.value is not None:
ri.cw.p(f'yds.rsp_cmd = {ri.op.enum_name};')
else:
ri.cw.p(f'yds.rsp_cmd = {ri.op.rsp_value};')
- ri.cw.p(f"yds.rsp_policy = &{ri.struct['reply'].render_name}_nest;")
ri.cw.nl()
ri.cw.p(f"nlh = ynl_gemsg_start_dump(ys, {ri.nl.get_family_id()}, {ri.op.enum_name}, 1);")
if ri.fixed_hdr:
ri.cw.p("hdr_len = sizeof(req->_hdr);")
- ri.cw.p("hdr = mnl_nlmsg_put_extra_header(nlh, hdr_len);")
+ ri.cw.p("hdr = ynl_nlmsg_put_extra_header(nlh, hdr_len);")
ri.cw.p("memcpy(hdr, &req->_hdr, hdr_len);")
ri.cw.nl()
@@ -2363,6 +2342,10 @@ def print_kernel_family_struct_hdr(family, cw):
cw.p(f"extern struct genl_family {family.c_name}_nl_family;")
cw.nl()
+ if 'sock-priv' in family.kernel_family:
+ cw.p(f'void {family.c_name}_nl_sock_priv_init({family.kernel_family["sock-priv"]} *priv);')
+ cw.p(f'void {family.c_name}_nl_sock_priv_destroy({family.kernel_family["sock-priv"]} *priv);')
+ cw.nl()
def print_kernel_family_struct_src(family, cw):
@@ -2384,6 +2367,11 @@ def print_kernel_family_struct_src(family, cw):
if family.mcgrps['list']:
cw.p(f'.mcgrps\t\t= {family.c_name}_nl_mcgrps,')
cw.p(f'.n_mcgrps\t= ARRAY_SIZE({family.c_name}_nl_mcgrps),')
+ if 'sock-priv' in family.kernel_family:
+ cw.p(f'.sock_priv_size\t= sizeof({family.kernel_family["sock-priv"]}),')
+ # Force cast here, actual helpers take pointer to the real type.
+ cw.p(f'.sock_priv_init\t= (void *){family.c_name}_nl_sock_priv_init,')
+ cw.p(f'.sock_priv_destroy = (void *){family.c_name}_nl_sock_priv_destroy,')
cw.block_end(';')
@@ -2584,7 +2572,7 @@ def render_user_family(family, cw, prototype):
cw.p('.hdr_len\t= sizeof(struct genlmsghdr),')
if family.ntfs:
cw.p(f".ntf_info\t= {family['name']}_ntf_info,")
- cw.p(f".ntf_info_size\t= MNL_ARRAY_SIZE({family['name']}_ntf_info),")
+ cw.p(f".ntf_info_size\t= YNL_ARRAY_SIZE({family['name']}_ntf_info),")
cw.block_end(line=';')
@@ -2680,6 +2668,7 @@ def main():
cw.p(f'#include "{os.path.basename(args.out_file[:-2])}.h"')
cw.nl()
headers = ['uapi/' + parsed.uapi_header]
+ headers += parsed.kernel_family.get('headers', [])
else:
cw.p('#include <stdlib.h>')
cw.p('#include <string.h>')
@@ -2700,7 +2689,6 @@ def main():
if args.mode == "user":
if not args.header:
- cw.p("#include <libmnl/libmnl.h>")
cw.p("#include <linux/genetlink.h>")
cw.nl()
for one in args.user_header:
diff --git a/tools/net/ynl/ynl-gen-rst.py b/tools/net/ynl/ynl-gen-rst.py
index 262d88f88696..927407b3efb3 100755
--- a/tools/net/ynl/ynl-gen-rst.py
+++ b/tools/net/ynl/ynl-gen-rst.py
@@ -189,12 +189,19 @@ def parse_operations(operations: List[Dict[str, Any]]) -> str:
def parse_entries(entries: List[Dict[str, Any]], level: int) -> str:
"""Parse a list of entries"""
+ ignored = ["pad"]
lines = []
for entry in entries:
if isinstance(entry, dict):
# entries could be a list or a dictionary
+ field_name = entry.get("name", "")
+ if field_name in ignored:
+ continue
+ type_ = entry.get("type")
+ if type_:
+ field_name += f" ({inline(type_)})"
lines.append(
- rst_fields(entry.get("name", ""), sanitize(entry.get("doc", "")), level)
+ rst_fields(field_name, sanitize(entry.get("doc", "")), level)
)
elif isinstance(entry, list):
lines.append(rst_list_inline(entry, level))
generated by cgit (git 2.34.1) at 2024-06-11 05:24:11 +0000