| 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
| ||
|
Message-ID: <AANLkTikxHDksqrvG4uNJ8JVY5AJgcftQy2F4ihJBV=TE@mail.gmail.com>
Date: Wed, 1 Dec 2010 16:57:02 -0800
From: Mahesh Bandewar <maheshb@...gle.com>
To: Ben Hutchings <bhutchings@...arflare.com>,
linux-netdev <netdev@...r.kernel.org>
Cc: Tom Herbert <therbert@...gle.com>,
David Miller <davem@...emloft.net>
Subject: [PATCH] ethtool : Allow ethtool to set interface in loopback mode.
This patch adds -L command-line option to enable/disable loopback mode
and -l option to display current loopback mode on a give interface.
Signed-off-by Mahesh Bandewar <maheshb@...gle.com>
ethtool-copy.h | 2 +
ethtool.c | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 66 insertions(+), 0 deletions(-)
---
diff --git a/ethtool-copy.h b/ethtool-copy.h
index 75c3ae7..297a042 100644
--- a/ethtool-copy.h
+++ b/ethtool-copy.h
@@ -584,6 +584,8 @@ struct ethtool_flash {
#define ETHTOOL_GSSET_INFO 0x00000037 /* Get string set info */
#define ETHTOOL_GRXFHINDIR 0x00000038 /* Get RX flow hash indir'n table */
#define ETHTOOL_SRXFHINDIR 0x00000039 /* Set RX flow hash indir'n table */
+#define ETHTOOL_SLOOPBACK 0x0000003a /* Enable / Disable loopback. */
+#define ETHTOOL_GLOOPBACK 0x0000003b /* Get loopback status. */
/* compatibility with older code */
#define SPARC_ETH_GSET ETHTOOL_GSET
diff --git a/ethtool.c b/ethtool.c
index 239912b..d3f7ffc 100644
--- a/ethtool.c
+++ b/ethtool.c
@@ -114,6 +114,8 @@ static int do_srxntuple(int fd, struct ifreq *ifr);
static int do_grxntuple(int fd, struct ifreq *ifr);
static int do_flash(int fd, struct ifreq *ifr);
static int do_permaddr(int fd, struct ifreq *ifr);
+static int do_sloopback(int fd, struct ifreq *ifr);
+static int do_gloopback(int fd, struct ifreq *ifr);
static int send_ioctl(int fd, struct ifreq *ifr);
@@ -145,6 +147,8 @@ static enum {
MODE_GNTUPLE,
MODE_FLASHDEV,
MODE_PERMADDR,
+ MODE_SLOOPBACK,
+ MODE_GLOOPBACK,
} mode = MODE_GSET;
static struct option {
@@ -266,6 +270,9 @@ static struct option {
"Get Rx ntuple filters and actions\n" },
{ "-P", "--show-permaddr", MODE_PERMADDR,
"Show permanent hardware address" },
+ { "-L", "--config-loopback", MODE_SLOOPBACK, "{En|Dis}able device
loopback",
+ " [ enable | disable ]\n"},
+ { "-l", "--show-loopback", MODE_GLOOPBACK, "Show device loopback mode",},
{ "-h", "--help", MODE_HELP, "Show this help" },
{}
};
@@ -407,6 +414,8 @@ static char *flash_file = NULL;
static int flash = -1;
static int flash_region = -1;
+static int loopback_enable = 0;
+
static int msglvl_changed;
static u32 msglvl_wanted = 0;
static u32 msglvl_mask = 0;
@@ -841,6 +850,8 @@ static void parse_cmdline(int argc, char **argp)
(mode == MODE_GNTUPLE) ||
(mode == MODE_PHYS_ID) ||
(mode == MODE_FLASHDEV) ||
+ (mode == MODE_SLOOPBACK) ||
+ (mode == MODE_GLOOPBACK) ||
(mode == MODE_PERMADDR)) {
devname = argp[i];
break;
@@ -1009,6 +1020,16 @@ static void parse_cmdline(int argc, char **argp)
}
break;
}
+ if (mode == MODE_SLOOPBACK) {
+ if (!strcmp(argp[i], "enable"))
+ loopback_enable = 1;
+ else if (!strcmp(argp[i], "disable"))
+ loopback_enable = 0;
+ else
+ show_usage(1);
+ i = argc;
+ break;
+ }
if (mode != MODE_SSET)
show_usage(1);
if (!strcmp(argp[i], "speed")) {
@@ -2019,6 +2040,10 @@ static int doit(void)
return do_flash(fd, &ifr);
} else if (mode == MODE_PERMADDR) {
return do_permaddr(fd, &ifr);
+ } else if (mode == MODE_SLOOPBACK) {
+ return do_sloopback(fd, &ifr);
+ } else if (mode == MODE_GLOOPBACK) {
+ return do_gloopback(fd, &ifr);
}
return 69;
@@ -3201,6 +3226,45 @@ static int do_grxntuple(int fd, struct ifreq *ifr)
return 0;
}
+static int do_sloopback(int fd, struct ifreq *ifr)
+{
+ int err;
+ struct ethtool_value edata;
+
+ edata.cmd = ETHTOOL_SLOOPBACK;
+ edata.data = loopback_enable;
+ ifr->ifr_data = (caddr_t)&edata;
+
+ err = send_ioctl(fd, ifr);
+ if (err < 0) {
+ char error[64];
+ sprintf(error, "Cannot %s loopback mode",
+ loopback_enable ? "enable" : "disable");
+ perror(error);
+ return 102;
+ }
+
+ return err;
+}
+
+static int do_gloopback(int fd, struct ifreq *ifr)
+{
+ int err;
+ struct ethtool_value edata;
+
+ edata.cmd = ETHTOOL_GLOOPBACK;
+ ifr->ifr_data = (caddr_t)&edata;
+
+ err = send_ioctl(fd, ifr);
+ if (err < 0) {
+ perror("Cannot get loopback status");
+ return 103;
+ }
+ printf("Loopback is %s\n", edata.data ? "enabled" : "disabled");
+
+ return err;
+}
+
static int send_ioctl(int fd, struct ifreq *ifr)
{
return ioctl(fd, SIOCETHTOOL, ifr);
--
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
Powered by blists - more mailing lists