[dpdk-dev,v10,10/20] unci: init netlink
Checks
Commit Message
Initialize netlink socket.
Userspace application will connect to the socket for data transfer.
Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
---
.../linuxapp/eal/include/exec-env/unci.h | 33 ++++++++++
lib/librte_eal/linuxapp/unci/Makefile | 1 +
lib/librte_eal/linuxapp/unci/unci_dev.h | 3 +
lib/librte_eal/linuxapp/unci/unci_net.c | 7 +++
lib/librte_eal/linuxapp/unci/unci_nl.c | 72 ++++++++++++++++++++++
5 files changed, 116 insertions(+)
create mode 100644 lib/librte_eal/linuxapp/unci/unci_nl.c
Comments
> -----Original Message-----
> From: Yigit, Ferruh
> Sent: Tuesday, July 4, 2017 5:13 PM
> To: dev@dpdk.org
> Cc: Yigit, Ferruh <ferruh.yigit@intel.com>; Stephen Hemminger
> <stephen@networkplumber.org>; Richardson, Bruce
> <bruce.richardson@intel.com>; Burakov, Anatoly
> <anatoly.burakov@intel.com>
> Subject: [PATCH v10 10/20] unci: init netlink
>
> Initialize netlink socket.
>
> Userspace application will connect to the socket for data transfer.
>
> Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
> ---
> .../linuxapp/eal/include/exec-env/unci.h | 33 ++++++++++
> lib/librte_eal/linuxapp/unci/Makefile | 1 +
> lib/librte_eal/linuxapp/unci/unci_dev.h | 3 +
> lib/librte_eal/linuxapp/unci/unci_net.c | 7 +++
> lib/librte_eal/linuxapp/unci/unci_nl.c | 72
> ++++++++++++++++++++++
> 5 files changed, 116 insertions(+)
> create mode 100644 lib/librte_eal/linuxapp/unci/unci_nl.c
>
> diff --git a/lib/librte_eal/linuxapp/eal/include/exec-env/unci.h
> b/lib/librte_eal/linuxapp/eal/include/exec-env/unci.h
> index 8d4a95777..6d3490aee 100644
> --- a/lib/librte_eal/linuxapp/eal/include/exec-env/unci.h
> +++ b/lib/librte_eal/linuxapp/eal/include/exec-env/unci.h
> @@ -60,6 +60,20 @@
>
> #define UNCI_DEVICE "unci"
>
> +#define UNCI_GENL_MSG_LEN 1536
> +
> +#define UNCI_NL_MSG_LEN 500
> +struct unci_nl_msg {
> + __u32 cmd_id;
> + __u32 port_id;
> + __u32 flag;
> + __u8 input_buffer[UNCI_NL_MSG_LEN];
> + __u8 output_buffer[UNCI_NL_MSG_LEN];
> + size_t input_buffer_len;
> + size_t output_buffer_len;
> + int err;
> +};
> +
> /* can go into include/uapi/linux/if_link.h */ enum {
> IFLA_UNCI_UNSPEC,
> @@ -70,4 +84,23 @@ enum {
>
> #define IFLA_UNCI_MAX (__IFLA_UNCI_MAX - 1)
>
> +
> +#define UNCI_GENL_VERSION 1
> +
> +enum {
> + UNCI_ATTR_UNSPEC,
> + UNCI_ATTR_MSG,
> + __UNCI_ATTR_MAX,
> +};
> +
> +#define UNCI_ATTR_MAX (__UNCI_ATTR_MAX - 1)
> +
> +enum {
> + UNCI_CMD_UNSPEC,
> + UNCI_CMD_MSG,
> + __UNCI_CMD_MAX,
> +};
> +
> +#define UNCI_CMD_MAX (__UNCI_CMD_MAX - 1)
> +
> #endif /* _UAPI_LINUX_UNCI_H_ */
> diff --git a/lib/librte_eal/linuxapp/unci/Makefile
> b/lib/librte_eal/linuxapp/unci/Makefile
> index 02e354814..c2a81be7d 100644
> --- a/lib/librte_eal/linuxapp/unci/Makefile
> +++ b/lib/librte_eal/linuxapp/unci/Makefile
> @@ -48,5 +48,6 @@ MODULE_CFLAGS += -Wall -Werror # all source are
> stored in SRCS-y #
> SRCS-$(CONFIG_RTE_UNCI_KMOD) := unci_net.c
> +SRCS-$(CONFIG_RTE_UNCI_KMOD) += unci_nl.c
>
> include $(RTE_SDK)/mk/rte.module.mk
> diff --git a/lib/librte_eal/linuxapp/unci/unci_dev.h
> b/lib/librte_eal/linuxapp/unci/unci_dev.h
> index 92b9b8383..a748abf98 100644
> --- a/lib/librte_eal/linuxapp/unci/unci_dev.h
> +++ b/lib/librte_eal/linuxapp/unci/unci_dev.h
> @@ -39,4 +39,7 @@ struct unci_dev {
> __u32 pid;
> };
>
> +int unci_nl_init(void);
> +void unci_nl_release(void);
> +
> #endif /* _UNCI_DEV_H_ */
> diff --git a/lib/librte_eal/linuxapp/unci/unci_net.c
> b/lib/librte_eal/linuxapp/unci/unci_net.c
> index 42fac3e63..1989b6d23 100644
> --- a/lib/librte_eal/linuxapp/unci/unci_net.c
> +++ b/lib/librte_eal/linuxapp/unci/unci_net.c
> @@ -74,6 +74,12 @@ static struct rtnl_link_ops unci_link_ops __read_mostly
> = {
>
> static int __init unci_init(void)
> {
> + int ret;
> +
> + ret = unci_nl_init();
> + if (ret)
> + return ret;
> +
> return rtnl_link_register(&unci_link_ops);
> }
> module_init(unci_init);
> @@ -81,6 +87,7 @@ module_init(unci_init); static void __exit
> unci_exit(void) {
> rtnl_link_unregister(&unci_link_ops);
> + unci_nl_release();
> }
> module_exit(unci_exit);
>
> diff --git a/lib/librte_eal/linuxapp/unci/unci_nl.c
> b/lib/librte_eal/linuxapp/unci/unci_nl.c
> new file mode 100644
> index 000000000..1461a3309
> --- /dev/null
> +++ b/lib/librte_eal/linuxapp/unci/unci_nl.c
> @@ -0,0 +1,72 @@
> +/*-
> + * GPL LICENSE SUMMARY
> + *
> + * Copyright(c) 2017 Intel Corporation. All rights reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of version 2 of the GNU General Public License as
> + * published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful, but
> + * WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> GNU
> + * General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program;
> + * The full GNU General Public License is included in this distribution
> + * in the file called LICENSE.GPL.
> + *
> + * Contact Information:
> + * Intel Corporation
> + */
Again, GPL-only, but the module says it's dual BSD-GPL (and some files indeed are licensed under dual license).
@@ -60,6 +60,20 @@
#define UNCI_DEVICE "unci"
+#define UNCI_GENL_MSG_LEN 1536
+
+#define UNCI_NL_MSG_LEN 500
+struct unci_nl_msg {
+ __u32 cmd_id;
+ __u32 port_id;
+ __u32 flag;
+ __u8 input_buffer[UNCI_NL_MSG_LEN];
+ __u8 output_buffer[UNCI_NL_MSG_LEN];
+ size_t input_buffer_len;
+ size_t output_buffer_len;
+ int err;
+};
+
/* can go into include/uapi/linux/if_link.h */
enum {
IFLA_UNCI_UNSPEC,
@@ -70,4 +84,23 @@ enum {
#define IFLA_UNCI_MAX (__IFLA_UNCI_MAX - 1)
+
+#define UNCI_GENL_VERSION 1
+
+enum {
+ UNCI_ATTR_UNSPEC,
+ UNCI_ATTR_MSG,
+ __UNCI_ATTR_MAX,
+};
+
+#define UNCI_ATTR_MAX (__UNCI_ATTR_MAX - 1)
+
+enum {
+ UNCI_CMD_UNSPEC,
+ UNCI_CMD_MSG,
+ __UNCI_CMD_MAX,
+};
+
+#define UNCI_CMD_MAX (__UNCI_CMD_MAX - 1)
+
#endif /* _UAPI_LINUX_UNCI_H_ */
@@ -48,5 +48,6 @@ MODULE_CFLAGS += -Wall -Werror
# all source are stored in SRCS-y
#
SRCS-$(CONFIG_RTE_UNCI_KMOD) := unci_net.c
+SRCS-$(CONFIG_RTE_UNCI_KMOD) += unci_nl.c
include $(RTE_SDK)/mk/rte.module.mk
@@ -39,4 +39,7 @@ struct unci_dev {
__u32 pid;
};
+int unci_nl_init(void);
+void unci_nl_release(void);
+
#endif /* _UNCI_DEV_H_ */
@@ -74,6 +74,12 @@ static struct rtnl_link_ops unci_link_ops __read_mostly = {
static int __init unci_init(void)
{
+ int ret;
+
+ ret = unci_nl_init();
+ if (ret)
+ return ret;
+
return rtnl_link_register(&unci_link_ops);
}
module_init(unci_init);
@@ -81,6 +87,7 @@ module_init(unci_init);
static void __exit unci_exit(void)
{
rtnl_link_unregister(&unci_link_ops);
+ unci_nl_release();
}
module_exit(unci_exit);
new file mode 100644
@@ -0,0 +1,72 @@
+/*-
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2017 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program;
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * Contact Information:
+ * Intel Corporation
+ */
+
+#include <net/genetlink.h>
+#include <net/sock.h>
+
+#include "unci_dev.h"
+
+static int unci_genl_process(struct sk_buff *skb, struct genl_info *info)
+{
+ struct nlattr **attrs = info->attrs;
+ struct unci_nl_msg nl_msg;
+
+ if (!attrs[UNCI_ATTR_MSG])
+ return -EINVAL;
+
+ nla_memcpy(&nl_msg, attrs[UNCI_ATTR_MSG], sizeof(struct unci_nl_msg));
+ pr_debug("cmd: %u\n", nl_msg.cmd_id);
+
+ return 0;
+}
+
+static struct nla_policy unci_genl_policy[UNCI_ATTR_MAX + 1] = {
+ [UNCI_ATTR_MSG] = { .type = NLA_BINARY, .len = UNCI_GENL_MSG_LEN },
+};
+
+static const struct genl_ops unci_ops[] = {
+ {
+ .cmd = UNCI_CMD_MSG,
+ .doit = unci_genl_process,
+ .policy = unci_genl_policy,
+ },
+};
+
+static struct genl_family unci_genl_family __ro_after_init = {
+ .module = THIS_MODULE,
+ .name = UNCI_DEVICE,
+ .version = UNCI_GENL_VERSION,
+ .maxattr = UNCI_ATTR_MAX,
+ .ops = unci_ops,
+ .n_ops = ARRAY_SIZE(unci_ops),
+};
+
+int unci_nl_init(void)
+{
+ return genl_register_family(&unci_genl_family);
+}
+
+void unci_nl_release(void)
+{
+ genl_unregister_family(&unci_genl_family);
+}