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Date: Wed, 28 Sep 2022 18:11:22 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, edumazet@...gle.com, pabeni@...hat.com,
robh@...nel.org, johannes@...solutions.net, ecree.xilinx@...il.com,
stephen@...workplumber.org, sdf@...gle.com, f.fainelli@...il.com,
fw@...len.de, linux-doc@...r.kernel.org, razor@...ckwall.org,
nicolas.dichtel@...nd.com, gnault@...hat.com,
Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH net-next 6/6] net: fou: use policy and operation tables generated from the spec
Generate and plug in the spec-based tables.
A little bit of renaming is needed in the FOU code.
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
net/ipv4/Makefile | 2 +-
net/ipv4/fou-nl.c | 48 ++++++++++++++++++++++++++++++++++++++++++++
net/ipv4/fou-nl.h | 25 +++++++++++++++++++++++
net/ipv4/fou.c | 51 +++++++++--------------------------------------
4 files changed, 83 insertions(+), 43 deletions(-)
create mode 100644 net/ipv4/fou-nl.c
create mode 100644 net/ipv4/fou-nl.h
diff --git a/net/ipv4/Makefile b/net/ipv4/Makefile
index bbdd9c44f14e..7c6bfc035cf3 100644
--- a/net/ipv4/Makefile
+++ b/net/ipv4/Makefile
@@ -26,7 +26,7 @@ obj-$(CONFIG_IP_MROUTE) += ipmr.o
obj-$(CONFIG_IP_MROUTE_COMMON) += ipmr_base.o
obj-$(CONFIG_NET_IPIP) += ipip.o
gre-y := gre_demux.o
-obj-$(CONFIG_NET_FOU) += fou.o
+obj-$(CONFIG_NET_FOU) += fou.o fou-nl.o
obj-$(CONFIG_NET_IPGRE_DEMUX) += gre.o
obj-$(CONFIG_NET_IPGRE) += ip_gre.o
udp_tunnel-y := udp_tunnel_core.o udp_tunnel_nic.o
diff --git a/net/ipv4/fou-nl.c b/net/ipv4/fou-nl.c
new file mode 100644
index 000000000000..cc872b40dd78
--- /dev/null
+++ b/net/ipv4/fou-nl.c
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: BSD-3-Clause
+// Do not edit directly, auto-generated from:
+// Documentation/netlink/specs/fou.yaml
+// YNL-GEN kernel source
+
+#include <net/netlink.h>
+#include <net/genetlink.h>
+
+#include "fou-nl.h"
+
+#include <linux/fou.h>
+
+// Global operation policy for fou
+const struct nla_policy fou_policy[FOU_ATTR_IFINDEX + 1] = {
+ [FOU_ATTR_PORT] = { .type = NLA_U16, },
+ [FOU_ATTR_AF] = { .type = NLA_U8, },
+ [FOU_ATTR_IPPROTO] = { .type = NLA_U8, },
+ [FOU_ATTR_TYPE] = { .type = NLA_U8, },
+ [FOU_ATTR_REMCSUM_NOPARTIAL] = { .type = NLA_FLAG, },
+ [FOU_ATTR_LOCAL_V4] = { .type = NLA_U32, },
+ [FOU_ATTR_LOCAL_V6] = { .len = 16, },
+ [FOU_ATTR_PEER_V4] = { .type = NLA_U32, },
+ [FOU_ATTR_PEER_V6] = { .len = 16, },
+ [FOU_ATTR_PEER_PORT] = { .type = NLA_U16, },
+ [FOU_ATTR_IFINDEX] = { .type = NLA_S32, },
+};
+
+// Ops table for fou
+const struct genl_small_ops fou_ops[3] = {
+ {
+ .cmd = FOU_CMD_ADD,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = fou_add_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = FOU_CMD_DEL,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = fou_del_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = FOU_CMD_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = fou_get_doit,
+ .dumpit = fou_get_dumpit,
+ },
+};
diff --git a/net/ipv4/fou-nl.h b/net/ipv4/fou-nl.h
new file mode 100644
index 000000000000..1610396a18bb
--- /dev/null
+++ b/net/ipv4/fou-nl.h
@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: BSD-3-Clause
+// Do not edit directly, auto-generated from:
+// Documentation/netlink/specs/fou.yaml
+// YNL-GEN kernel header
+
+#ifndef _LINUX_FOU_GEN_H
+#define _LINUX_FOU_GEN_H
+
+#include <net/netlink.h>
+#include <net/genetlink.h>
+
+#include <linux/fou.h>
+
+// Global operation policy for fou
+extern const struct nla_policy fou_policy[FOU_ATTR_IFINDEX + 1];
+
+// Ops table for fou
+extern const struct genl_small_ops fou_ops[3];
+
+int fou_add_doit(struct sk_buff *skb, struct genl_info *info);
+int fou_del_doit(struct sk_buff *skb, struct genl_info *info);
+int fou_get_doit(struct sk_buff *skb, struct genl_info *info);
+int fou_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb);
+
+#endif /* _LINUX_FOU_GEN_H */
diff --git a/net/ipv4/fou.c b/net/ipv4/fou.c
index 0c3c6d0cee29..6f934ae82d1d 100644
--- a/net/ipv4/fou.c
+++ b/net/ipv4/fou.c
@@ -19,6 +19,8 @@
#include <uapi/linux/fou.h>
#include <uapi/linux/genetlink.h>
+#include "fou-nl.h"
+
struct fou {
struct socket *sock;
u8 protocol;
@@ -640,20 +642,6 @@ static int fou_destroy(struct net *net, struct fou_cfg *cfg)
static struct genl_family fou_nl_family;
-static const struct nla_policy fou_nl_policy[FOU_ATTR_MAX + 1] = {
- [FOU_ATTR_PORT] = { .type = NLA_U16, },
- [FOU_ATTR_AF] = { .type = NLA_U8, },
- [FOU_ATTR_IPPROTO] = { .type = NLA_U8, },
- [FOU_ATTR_TYPE] = { .type = NLA_U8, },
- [FOU_ATTR_REMCSUM_NOPARTIAL] = { .type = NLA_FLAG, },
- [FOU_ATTR_LOCAL_V4] = { .type = NLA_U32, },
- [FOU_ATTR_PEER_V4] = { .type = NLA_U32, },
- [FOU_ATTR_LOCAL_V6] = { .len = sizeof(struct in6_addr), },
- [FOU_ATTR_PEER_V6] = { .len = sizeof(struct in6_addr), },
- [FOU_ATTR_PEER_PORT] = { .type = NLA_U16, },
- [FOU_ATTR_IFINDEX] = { .type = NLA_S32, },
-};
-
static int parse_nl_config(struct genl_info *info,
struct fou_cfg *cfg)
{
@@ -745,7 +733,7 @@ static int parse_nl_config(struct genl_info *info,
return 0;
}
-static int fou_nl_cmd_add_port(struct sk_buff *skb, struct genl_info *info)
+int fou_add_doit(struct sk_buff *skb, struct genl_info *info)
{
struct net *net = genl_info_net(info);
struct fou_cfg cfg;
@@ -758,7 +746,7 @@ static int fou_nl_cmd_add_port(struct sk_buff *skb, struct genl_info *info)
return fou_create(net, &cfg, NULL);
}
-static int fou_nl_cmd_rm_port(struct sk_buff *skb, struct genl_info *info)
+int fou_del_doit(struct sk_buff *skb, struct genl_info *info)
{
struct net *net = genl_info_net(info);
struct fou_cfg cfg;
@@ -827,7 +815,7 @@ static int fou_dump_info(struct fou *fou, u32 portid, u32 seq,
return -EMSGSIZE;
}
-static int fou_nl_cmd_get_port(struct sk_buff *skb, struct genl_info *info)
+int fou_get_doit(struct sk_buff *skb, struct genl_info *info)
{
struct net *net = genl_info_net(info);
struct fou_net *fn = net_generic(net, fou_net_id);
@@ -874,7 +862,7 @@ static int fou_nl_cmd_get_port(struct sk_buff *skb, struct genl_info *info)
return ret;
}
-static int fou_nl_dump(struct sk_buff *skb, struct netlink_callback *cb)
+int fou_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
{
struct net *net = sock_net(skb->sk);
struct fou_net *fn = net_generic(net, fou_net_id);
@@ -897,37 +885,16 @@ static int fou_nl_dump(struct sk_buff *skb, struct netlink_callback *cb)
return skb->len;
}
-static const struct genl_small_ops fou_nl_ops[] = {
- {
- .cmd = FOU_CMD_ADD,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = fou_nl_cmd_add_port,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = FOU_CMD_DEL,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = fou_nl_cmd_rm_port,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = FOU_CMD_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = fou_nl_cmd_get_port,
- .dumpit = fou_nl_dump,
- },
-};
-
static struct genl_family fou_nl_family __ro_after_init = {
.hdrsize = 0,
.name = FOU_GENL_NAME,
.version = FOU_GENL_VERSION,
.maxattr = FOU_ATTR_MAX,
- .policy = fou_nl_policy,
+ .policy = fou_policy,
.netnsok = true,
.module = THIS_MODULE,
- .small_ops = fou_nl_ops,
- .n_small_ops = ARRAY_SIZE(fou_nl_ops),
+ .small_ops = fou_ops,
+ .n_small_ops = ARRAY_SIZE(fou_ops),
.resv_start_op = FOU_CMD_GET + 1,
};
--
2.37.3
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