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Date: Sat, 18 Jun 2011 13:58:43 -0700
From: greearb@...delatech.com
To: netdev@...r.kernel.org
Cc: Ben Greear <greearb@...delatech.com>
Subject: [PATCH v2 2/2] ethtool: Support enabling rx of errored frames.
From: Ben Greear <greearb@...delatech.com>
This can be useful when sniffing dodgy networks.
Signed-off-by: Ben Greear <greearb@...delatech.com>
---
:100644 100644 c059852... 91ad2e6... M ethtool-copy.h
:100644 100644 e2eca31... ca146fb... M ethtool.8.in
:100644 100644 b97552c... 3179ad8... M ethtool.c
ethtool-copy.h | 2 ++
ethtool.8.in | 19 +++++++++++++++++++
ethtool.c | 55 ++++++++++++++++++++++++++++++++++++++++++++++++++++++-
3 files changed, 75 insertions(+), 1 deletions(-)
diff --git a/ethtool-copy.h b/ethtool-copy.h
index c059852..91ad2e6 100644
--- a/ethtool-copy.h
+++ b/ethtool-copy.h
@@ -753,6 +753,8 @@ enum ethtool_sfeatures_retval_bits {
#define ETHTOOL_GET_DUMP_DATA 0x00000040 /* Get dump data */
#define ETHTOOL_GET_SAVE_RXFCS 0x00000041 /* Get RX Save Frame Checksum */
#define ETHTOOL_SET_SAVE_RXFCS 0x00000042 /* Set RX Save Frame Checksum */
+#define ETHTOOL_GET_SAVE_RXERR 0x00000043 /* Get RX Save Errored Frames */
+#define ETHTOOL_SET_SAVE_RXERR 0x00000044 /* Set RX Save Errored Frames */
/* compatibility with older code */
#define SPARC_ETH_GSET ETHTOOL_GSET
diff --git a/ethtool.8.in b/ethtool.8.in
index e2eca31..ca146fb 100644
--- a/ethtool.8.in
+++ b/ethtool.8.in
@@ -281,6 +281,13 @@ ethtool \- query or control network driver and hardware settings
.I ethX
.BI \ N
.HP
+.B ethtool \-b|\-\-get\-save\-rxerr
+.I ethX
+.HP
+.B ethtool\ \-B|\-\-set\-save\-rxerr
+.I ethX
+.BI \ N
+.HP
.B ethtool \-f|\-\-flash
.I ethX
.RI FILE
@@ -648,6 +655,18 @@ Configures the receive frame checksum flag.
Frame Checksum will be appended to the end of the packet. This
can be useful when sniffing packets.
.TP
+.B \-b \-\-show\-save\-rxerr
+Retrieves the receive save errored frames flag.
+.TP
+.B \-B \-\-set\-save\-rxerr
+Configures the receive save errored frames flag.
+.TP
+.B N
+1 means enable, 0 means disable. When enabled, the NIC should
+receive all possible frames and pass them up the stack, including
+frames with bad Ethernet checksums, bad length, etc.
+This can be useful when sniffing packets.
+.TP
.B \-f \-\-flash \ FILE
Flash firmware image from the specified file to a region on the adapter.
By default this will flash all the regions on the adapter.
diff --git a/ethtool.c b/ethtool.c
index b97552c..3179ad8 100644
--- a/ethtool.c
+++ b/ethtool.c
@@ -101,6 +101,8 @@ static int do_getfwdump(int fd, struct ifreq *ifr);
static int do_setfwdump(int fd, struct ifreq *ifr);
static int do_set_save_rxfcs(int fd, struct ifreq *ifr);
static int do_get_save_rxfcs(int fd, struct ifreq *ifr);
+static int do_set_save_rxerr(int fd, struct ifreq *ifr);
+static int do_get_save_rxerr(int fd, struct ifreq *ifr);
static int send_ioctl(int fd, struct ifreq *ifr);
@@ -137,6 +139,8 @@ static enum {
MODE_GET_DUMP,
MODE_SET_SAVE_RXFCS,
MODE_GET_SAVE_RXFCS,
+ MODE_SET_SAVE_RXERR,
+ MODE_GET_SAVE_RXERR,
} mode = MODE_GSET;
static struct option {
@@ -275,6 +279,11 @@ static struct option {
{ "-Z", "--set-save-rxfcs", MODE_SET_SAVE_RXFCS,
"Set Save RX-FCS flag of the device",
" N\n"},
+ { "-b", "--get-save-rxerr", MODE_GET_SAVE_RXERR,
+ "Get Save RX-ERR flag" },
+ { "-B", "--set-save-rxerr", MODE_SET_SAVE_RXERR,
+ "Set Save RX-ERR flag of the device",
+ " N\n"},
{ "-h", "--help", MODE_HELP, "Show this help" },
{ NULL, "--version", MODE_VERSION, "Show version number" },
{}
@@ -408,6 +417,7 @@ static u32 msglvl_mask = 0;
static u32 dump_flag;
static char *dump_file = NULL;
static u32 save_rxfcs_flag;
+static u32 save_rxerr_flag;
static int rx_class_rule_get = -1;
static int rx_class_rule_del = -1;
@@ -804,7 +814,9 @@ static void parse_cmdline(int argc, char **argp)
(mode == MODE_SET_DUMP) ||
(mode == MODE_GET_DUMP) ||
(mode == MODE_SET_SAVE_RXFCS) ||
- (mode == MODE_GET_SAVE_RXFCS)) {
+ (mode == MODE_GET_SAVE_RXFCS) ||
+ (mode == MODE_SET_SAVE_RXERR) ||
+ (mode == MODE_GET_SAVE_RXERR)) {
devname = argp[i];
break;
}
@@ -832,6 +844,9 @@ static void parse_cmdline(int argc, char **argp)
} else if (mode == MODE_SET_SAVE_RXFCS) {
save_rxfcs_flag = get_u32(argp[i], 0);
break;
+ } else if (mode == MODE_SET_SAVE_RXERR) {
+ save_rxerr_flag = get_u32(argp[i], 0);
+ break;
}
/* fallthrough */
default:
@@ -1954,6 +1969,10 @@ static int doit(void)
return do_get_save_rxfcs(fd, &ifr);
} else if (mode == MODE_SET_SAVE_RXFCS) {
return do_set_save_rxfcs(fd, &ifr);
+ } else if (mode == MODE_GET_SAVE_RXERR) {
+ return do_get_save_rxerr(fd, &ifr);
+ } else if (mode == MODE_SET_SAVE_RXERR) {
+ return do_set_save_rxerr(fd, &ifr);
}
return 69;
@@ -3375,6 +3394,40 @@ static int do_get_save_rxfcs(int fd, struct ifreq *ifr)
}
}
+static int do_set_save_rxerr(int fd, struct ifreq *ifr)
+{
+ int err;
+ struct ethtool_value edata;
+
+ edata.cmd = ETHTOOL_SET_SAVE_RXERR;
+ edata.data = save_rxerr_flag;
+ ifr->ifr_data = (caddr_t)&edata;
+ err = send_ioctl(fd, ifr);
+ if (err < 0) {
+ perror("Can not set Save RX ERR flag.\n");
+ return 1;
+ }
+ return 0;
+}
+
+static int do_get_save_rxerr(int fd, struct ifreq *ifr)
+{
+ int err;
+ struct ethtool_value edata;
+
+ edata.cmd = ETHTOOL_GET_SAVE_RXERR;
+ ifr->ifr_data = (caddr_t)&edata;
+ err = send_ioctl(fd, ifr);
+ if (err == 0) {
+ fprintf(stdout, " Save RX-ERR %s\n",
+ edata.data ? "Enabled" : "Disabled");
+ return 0;
+ } else {
+ perror("Can not get Save RX ERR flag\n");
+ return 1;
+ }
+}
+
static int send_ioctl(int fd, struct ifreq *ifr)
{
return ioctl(fd, SIOCETHTOOL, ifr);
--
1.7.3.4
--
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