netdev - [PATCH 1/2] ethtool: Add generic structure and functions for named flags

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1274200336.2113.0.camel@achroite.uk.solarflarecom.com>
Date:	Tue, 18 May 2010 17:32:16 +0100
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	Jeff Garzik <jgarzik@...hat.com>
Cc:	netdev <netdev@...r.kernel.org>,
	sf-linux-drivers <linux-net-drivers@...arflare.com>
Subject: [PATCH 1/2] ethtool: Add generic structure and functions for named
 flags

This will be used to support named message type flags.

Signed-off-by: Ben Hutchings <bhutchings@...arflare.com>
---
 ethtool.c |   41 +++++++++++++++++++++++++++++++++++++++++
 1 files changed, 41 insertions(+), 0 deletions(-)

diff --git a/ethtool.c b/ethtool.c
index 4226a67..7004b7f 100644
--- a/ethtool.c
+++ b/ethtool.c
@@ -355,6 +355,12 @@ struct cmdline_info {
 	void *ioctl_val;
 };
 
+struct named_flag {
+	const char *name;
+	u32 flag;
+	int *wanted;
+};
+
 static struct cmdline_info cmdline_gregs[] = {
 	{ "raw", CMDL_BOOL, &gregs_dump_raw, NULL },
 	{ "hex", CMDL_BOOL, &gregs_dump_hex, NULL },
@@ -520,6 +526,41 @@ static void parse_generic_cmdline(int argc, char **argp,
 	}
 }
 
+static void
+print_flags(const struct named_flag *flags, unsigned int n_flags, u32 value)
+{
+	const char *sep = "";
+
+	while (n_flags) {
+		if (value & flags->flag) {
+			printf("%s%s", sep, flags->name);
+			sep = " ";
+			value &= ~flags->flag;
+		}
+		++flags;
+		--n_flags;
+	}
+
+	/* Print any unrecognised flags in hex */
+	if (value)
+		printf("%s%#x", sep, value);
+}
+
+static u32
+update_flags(const struct named_flag *flags, unsigned int n_flags, u32 value)
+{
+	while (n_flags) {
+		if (*flags->wanted == 0)
+			value &= ~flags->flag;
+		else if (*flags->wanted == 1)
+			value |= flags->flag;
+		++flags;
+		--n_flags;
+	}
+
+	return value;
+}
+
 static int rxflow_str_to_type(const char *str)
 {
 	int flow_type = 0;
-- 
1.6.2.5


-- 
Ben Hutchings, Senior Software Engineer, Solarflare Communications
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html