[qca-nss-clients] Add edma netlink module
Support Multicast event notifications.
Change-Id: I901a3d098de21f66b2ded9b76187b7915a2263b9
Signed-off-by: Wayne Tan <wtan@codeaurora.org>
diff --git a/netlink/Makefile b/netlink/Makefile
index c2ed18d..4b6c633 100644
--- a/netlink/Makefile
+++ b/netlink/Makefile
@@ -10,6 +10,7 @@
ccflags-y += -DCONFIG_NSS_NLOAM=1
ccflags-y += -DCONFIG_NSS_NLGRE_REDIR_FAMILY=1
ccflags-y += -DCONFIG_NSS_NLETHRX=1
+ccflags-y += -DCONFIG_NSS_NLEDMA=1
qca-nss-netlink-objs := nss_nl.o
qca-nss-netlink-objs += nss_nlgre_redir_family.o
@@ -22,6 +23,7 @@
qca-nss-netlink-objs += nss_nlipsec.o
qca-nss-netlink-objs += nss_nloam.o
qca-nss-netlink-objs += nss_nlethrx.o
+qca-nss-netlink-objs += nss_nledma.o
CAPWAP_ENABLED:=CONFIG_PACKAGE_kmod-qca-nss-drv-capwapmgr=y
CAPWAP_CONFIG:=$(shell grep $(CAPWAP_ENABLED) $(TOPDIR)/.config)
diff --git a/netlink/include/nss_nlcmn_if.h b/netlink/include/nss_nlcmn_if.h
index 8ac0fdf..94eb903 100644
--- a/netlink/include/nss_nlcmn_if.h
+++ b/netlink/include/nss_nlcmn_if.h
@@ -41,6 +41,7 @@
* @brief NSS subsystems in alphabetical order for nssinfo tool
*/
enum nss_nlcmn_subsys {
+ NSS_NLCMN_SUBSYS_EDMA,
NSS_NLCMN_SUBSYS_ETHRX,
NSS_NLCMN_SUBSYS_IPV4,
NSS_NLCMN_SUBSYS_MAX
diff --git a/netlink/include/nss_nledma_if.h b/netlink/include/nss_nledma_if.h
new file mode 100644
index 0000000..604b5de
--- /dev/null
+++ b/netlink/include/nss_nledma_if.h
@@ -0,0 +1,42 @@
+/*
+ **************************************************************************
+ * Copyright (c) 2020, The Linux Foundation. All rights reserved.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for
+ * any purpose with or without fee is hereby granted, provided that the
+ * above copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+ * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ **************************************************************************
+ */
+
+/*
+ * @file nss_nledma_if.h
+ * NSS Netlink Edma headers
+ */
+#ifndef __NSS_NLEDMA_IF_H
+#define __NSS_NLEDMA_IF_H
+#include "nss_edma.h"
+
+/**
+ * Edma forwarding Family
+ */
+#define NSS_NLEDMA_FAMILY "nss_nledma"
+#define NSS_NLEDMA_MCAST_GRP "nss_nledma_mc"
+
+/**
+ * @brief Edma stats
+ */
+struct nss_nledma_stats {
+ uint32_t core_id;
+ int port_id;
+ uint64_t cmn_node_stats[NSS_STATS_NODE_MAX];
+};
+
+#endif /* __NSS_NLEDMA_IF_H */
diff --git a/netlink/nss_nl.c b/netlink/nss_nl.c
index b425fce..41cacd6 100644
--- a/netlink/nss_nl.c
+++ b/netlink/nss_nl.c
@@ -50,6 +50,8 @@
#include "nss_nloam_if.h"
#include "nss_nlethrx.h"
#include "nss_nlethrx_if.h"
+#include "nss_nledma.h"
+#include "nss_nledma_if.h"
#if defined (CONFIG_NSS_NLCRYPTO)
#include "nss_nlcrypto_if.h"
#else
@@ -168,6 +170,15 @@
.exit = NSS_NLETHRX_EXIT, /* exit */
.valid = CONFIG_NSS_NLETHRX /* 1 or 0 */
},
+ {
+ /*
+ * NSS_NLEDMA
+ */
+ .name = NSS_NLEDMA_FAMILY, /* edma */
+ .entry = NSS_NLEDMA_INIT, /* init */
+ .exit = NSS_NLEDMA_EXIT, /* exit */
+ .valid = CONFIG_NSS_NLEDMA /* 1 or 0 */
+ },
};
#define NSS_NL_FAMILY_HANDLER_SZ ARRAY_SIZE(family_handlers)
diff --git a/netlink/nss_nledma.c b/netlink/nss_nledma.c
new file mode 100644
index 0000000..220958a
--- /dev/null
+++ b/netlink/nss_nledma.c
@@ -0,0 +1,177 @@
+/*
+ **************************************************************************
+ * Copyright (c) 2020, The Linux Foundation. All rights reserved.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for
+ * any purpose with or without fee is hereby granted, provided that the
+ * above copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+ * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ **************************************************************************
+ */
+
+/*
+ * nss_nledma.c
+ * NSS Netlink Edma Handler
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/version.h>
+#include <linux/netlink.h>
+#include <linux/vmalloc.h>
+
+#include <net/genetlink.h>
+#include <net/sock.h>
+
+#include <nss_api_if.h>
+#include <nss_cmn.h>
+#include <nss_nl_if.h>
+#include "nss_nl.h"
+#include "nss_nlcmn_if.h"
+#include "nss_nledma_if.h"
+#include "nss_edma.h"
+
+/*
+ * prototypes
+ */
+static int nss_nledma_ops_get_stats(struct sk_buff *skb, struct genl_info *info);
+static int nss_nledma_process_notify(struct notifier_block *nb, unsigned long val, void *data);
+
+/*
+ * Edma family definition
+ */
+static struct genl_family nss_nledma_family = {
+ .id = GENL_ID_GENERATE, /* Auto generate ID */
+ .name = NSS_NLEDMA_FAMILY, /* family name string */
+ .hdrsize = sizeof(struct nss_nledma_stats), /* NSS NETLINK Edma stats */
+ .version = NSS_NL_VER, /* Set it to NSS_NLEDMA version */
+ .maxattr = NSS_STATS_EVENT_MAX, /* maximum commands supported */
+ .netnsok = true,
+ .pre_doit = NULL,
+ .post_doit = NULL,
+};
+
+/*
+ * multicast group for sending message status & events
+ */
+static const struct genl_multicast_group nss_nledma_mcgrp[] = {
+ {.name = NSS_NLEDMA_MCAST_GRP},
+};
+
+/*
+ * operation table called by the generic netlink layer based on the command
+ */
+static struct genl_ops nss_nledma_ops[] = {
+ {.cmd = NSS_STATS_EVENT_NOTIFY, .doit = nss_nledma_ops_get_stats,},
+};
+
+/*
+ * statistics call back handler for edma from NSS
+ */
+static struct notifier_block nss_edma_stats_notifier_nb = {
+ .notifier_call = nss_nledma_process_notify,
+};
+
+#define NSS_NLEDMA_OPS_SZ ARRAY_SIZE(nss_nledma_ops)
+
+/*
+ * nss_nledma_ops_get_stats()
+ * get stats handler
+ */
+static int nss_nledma_ops_get_stats(struct sk_buff *skb, struct genl_info *info)
+{
+ return 0;
+}
+
+/*
+ * nss_nledma_process_notify()
+ * process notification messages from NSS
+ */
+static int nss_nledma_process_notify(struct notifier_block *nb, unsigned long val, void *data)
+{
+ struct nss_nledma_stats *stats;
+ struct sk_buff *skb;
+ int id;
+
+ for (id = 0 ; id < NSS_EDMA_NUM_PORTS_MAX; id++) {
+ skb = nss_nl_new_msg(&nss_nledma_family, NSS_NLCMN_SUBSYS_EDMA);
+ if (!skb) {
+ nss_nl_error("unable to allocate NSS_NLEDMA event\n");
+ return NOTIFY_DONE;
+ }
+
+ stats = nss_nl_get_data(skb);
+ nss_edma_get_stats(stats->cmn_node_stats,id);
+ stats->core_id = *(uint32_t *)data;
+ stats->port_id = id;
+ nss_nl_mcast_event(&nss_nledma_family, skb);
+ }
+
+ return NOTIFY_DONE;
+}
+
+/*
+ * nss_nledma_init()
+ * handler init
+ */
+bool nss_nledma_init(void)
+{
+ int error, ret;
+
+ nss_nl_info_always("Init NSS netlink Edma handler\n");
+
+ /*
+ * register NETLINK ops with the family
+ */
+ error = genl_register_family_with_ops_groups(&nss_nledma_family, nss_nledma_ops, nss_nledma_mcgrp);
+ if (error) {
+ nss_nl_info_always("Error: unable to register Edma family\n");
+ return false;
+ }
+
+ /*
+ * register device call back handler for edma from NSS
+ */
+ ret = nss_edma_stats_register_notifier(&nss_edma_stats_notifier_nb);
+ if (ret) {
+ nss_nl_info_always("Error: retreiving the NSS Context\n");
+ genl_unregister_family(&nss_nledma_family);
+ return false;
+ }
+
+ return true;
+}
+
+/*
+ * nss_nledma_exit()
+ * handler exit
+ */
+bool nss_nledma_exit(void)
+{
+ int error;
+
+ nss_nl_info_always("Exit NSS netlink Edma handler\n");
+
+ /*
+ * Unregister the device callback handler for edma
+ */
+ nss_edma_stats_unregister_notifier(&nss_edma_stats_notifier_nb);
+
+ /*
+ * unregister the ops family
+ */
+ error = genl_unregister_family(&nss_nledma_family);
+ if (error) {
+ nss_nl_info_always("unable to unregister Edma NETLINK family\n");
+ return false;
+ }
+
+ return true;
+}
diff --git a/netlink/nss_nledma.h b/netlink/nss_nledma.h
new file mode 100644
index 0000000..0d96617
--- /dev/null
+++ b/netlink/nss_nledma.h
@@ -0,0 +1,37 @@
+/*
+ **************************************************************************
+ * Copyright (c) 2020, The Linux Foundation. All rights reserved.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for
+ * any purpose with or without fee is hereby granted, provided that the
+ * above copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+ * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ **************************************************************************
+ */
+
+/*
+ * nss_nledma.h
+ * NSS Netlink Edma API definitions
+ */
+#ifndef __NSS_NLEDMA_H
+#define __NSS_NLEDMA_H
+
+bool nss_nledma_init(void);
+bool nss_nledma_exit(void);
+
+#if defined(CONFIG_NSS_NLEDMA)
+#define NSS_NLEDMA_INIT nss_nledma_init
+#define NSS_NLEDMA_EXIT nss_nledma_exit
+#else
+#define NSS_NLEDMA_INIT 0
+#define NSS_NLEDMA_EXIT 0
+#endif /* !CONFIG_NSS_NLEDMA */
+
+#endif /* __NSS_NLEDMA_H */