From 548573fb441d1b7752cb54065841c3d30aff8cc2 Mon Sep 17 00:00:00 2001
From: Phil Sutter <psutter@redhat.com>
Date: Sat, 9 Jul 2016 11:33:14 +0200
Subject: [PATCH] devlink: introduce dump filtering function

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1342515
Upstream Status: iproute2.git commit 707a91c549496

commit 707a91c5494962e3f5b358fc866ebb79dc28c3e3
Author: Jiri Pirko <jiri@mellanox.com>
Date:   Fri Apr 15 09:51:49 2016 +0200

    devlink: introduce dump filtering function

    This function is to be used from dump callbacks to decide if the output
    currect output should be filtered off or not. Filtering is based on
    previously parsed and stored command line options.

    Signed-off-by: Jiri Pirko <jiri@mellanox.com>
---
 devlink/devlink.c | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/devlink/devlink.c b/devlink/devlink.c
index 0c2132f..d436bbf 100644
--- a/devlink/devlink.c
+++ b/devlink/devlink.c
@@ -563,6 +563,36 @@ static int dl_argv_parse_put(struct nlmsghdr *nlh, struct dl *dl,
 	return 0;
 }
 
+static bool dl_dump_filter(struct dl *dl, struct nlattr **tb)
+{
+	struct dl_opts *opts = &dl->opts;
+	struct nlattr *attr_bus_name = tb[DEVLINK_ATTR_BUS_NAME];
+	struct nlattr *attr_dev_name = tb[DEVLINK_ATTR_DEV_NAME];
+	struct nlattr *attr_port_index = tb[DEVLINK_ATTR_PORT_INDEX];
+
+	if (opts->present & DL_OPT_HANDLE &&
+	    attr_bus_name && attr_dev_name) {
+		const char *bus_name = mnl_attr_get_str(attr_bus_name);
+		const char *dev_name = mnl_attr_get_str(attr_dev_name);
+
+		if (strcmp(bus_name, opts->bus_name) != 0 ||
+		    strcmp(dev_name, opts->dev_name) != 0)
+			return false;
+	}
+	if (opts->present & DL_OPT_HANDLEP &&
+	    attr_bus_name && attr_dev_name && attr_port_index) {
+		const char *bus_name = mnl_attr_get_str(attr_bus_name);
+		const char *dev_name = mnl_attr_get_str(attr_dev_name);
+		uint32_t port_index = mnl_attr_get_u32(attr_port_index);
+
+		if (strcmp(bus_name, opts->bus_name) != 0 ||
+		    strcmp(dev_name, opts->dev_name) != 0 ||
+		    port_index != opts->port_index)
+			return false;
+	}
+	return true;
+}
+
 static void cmd_dev_help(void)
 {
 	pr_out("Usage: devlink dev show [ DEV ]\n");
-- 
1.8.3.1