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Message-Id: <1308288305-11582-1-git-send-email-greearb@candelatech.com>
Date: Thu, 16 Jun 2011 22:25:05 -0700
From: greearb@...delatech.com
To: netdev@...r.kernel.org, bhutchings@...arflare.com
Cc: Ben Greear <greearb@...delatech.com>
Subject: [RFC] ethtool: Support get/set rx-save-fcs flag.
From: Ben Greear <greearb@...delatech.com>
This allows users to receive the Ethernet frame checksum
on supported drivers.
Signed-off-by: Ben Greear <greearb@...delatech.com>
---
:100644 100644 c7a18f7... 408b027... M ethtool-copy.h
:100644 100644 7b1cdf5... 66a00d5... M ethtool.8.in
:100644 100644 c189c78... 5e2d6eb... M ethtool.c
ethtool-copy.h | 2 ++
ethtool.8.in | 18 ++++++++++++++++++
ethtool.c | 55 ++++++++++++++++++++++++++++++++++++++++++++++++++++++-
3 files changed, 74 insertions(+), 1 deletions(-)
diff --git a/ethtool-copy.h b/ethtool-copy.h
index c7a18f7..408b027 100644
--- a/ethtool-copy.h
+++ b/ethtool-copy.h
@@ -751,6 +751,8 @@ enum ethtool_sfeatures_retval_bits {
#define ETHTOOL_SET_DUMP 0x0000003e /* Set dump settings */
#define ETHTOOL_GET_DUMP_FLAG 0x0000003f /* Get dump settings */
#define ETHTOOL_GET_DUMP_DATA 0x00000040 /* Get dump data */
+#define ETHTOOL_GETRXFCS 0x00000041 /* Get RX Save Frame Checksum */
+#define ETHTOOL_SETRXFCS 0x00000042 /* Set RX Save Frame Checksum */
/* compatibility with older code */
#define SPARC_ETH_GSET ETHTOOL_GSET
diff --git a/ethtool.8.in b/ethtool.8.in
index 7b1cdf5..66a00d5 100644
--- a/ethtool.8.in
+++ b/ethtool.8.in
@@ -274,6 +274,13 @@ ethtool \- query or control network driver and hardware settings
.IR W1
.RB ...\ ]
.HP
+.B ethtool \-z|\-\-get\-rxfcs
+.I ethX
+.HP
+.B ethtool\ \-Z|\-\-set\-rxfcs
+.I ethX
+.BI \ N
+.HP
.B ethtool \-f|\-\-flash
.I ethX
.RI FILE
@@ -630,6 +637,17 @@ Sets the receive flow hash indirection table to spread flows between
receive queues according to the given weights. The sum of the weights
must be non-zero and must not exceed the size of the indirection table.
.TP
+.B \-z \-\-show\-rxfcs
+Retrieves the receive frame checksum flag.
+.TP
+.B \-Z \-\-set\-rxcfs
+Configures the receive frame checksum flag.
+.TP
+.B N
+1 means enable, 0 means disable. When enabled, the 4-byte
+Frame Checksum will be appended to the end of the packet. 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 c189c78..5e2d6eb 100644
--- a/ethtool.c
+++ b/ethtool.c
@@ -99,6 +99,8 @@ static int do_flash(int fd, struct ifreq *ifr);
static int do_permaddr(int fd, struct ifreq *ifr);
static int do_getfwdump(int fd, struct ifreq *ifr);
static int do_setfwdump(int fd, struct ifreq *ifr);
+static int do_srxfcs(int fd, struct ifreq *ifr);
+static int do_grxfcs(int fd, struct ifreq *ifr);
static int send_ioctl(int fd, struct ifreq *ifr);
@@ -133,6 +135,8 @@ static enum {
MODE_PERMADDR,
MODE_SET_DUMP,
MODE_GET_DUMP,
+ MODE_SET_RXFCS,
+ MODE_GET_RXFCS,
} mode = MODE_GSET;
static struct option {
@@ -266,6 +270,11 @@ static struct option {
{ "-W", "--set-dump", MODE_SET_DUMP,
"Set dump flag of the device",
" N\n"},
+ { "-z", "--get-rxfcs", MODE_GET_RXFCS,
+ "Get RX-FCS flag" },
+ { "-Z", "--set-rxfcs", MODE_SET_RXFCS,
+ "Set RX-FCS flag of the device",
+ " N\n"},
{ "-h", "--help", MODE_HELP, "Show this help" },
{ NULL, "--version", MODE_VERSION, "Show version number" },
{}
@@ -398,6 +407,7 @@ static u32 msglvl_wanted = 0;
static u32 msglvl_mask = 0;
static u32 dump_flag;
static char *dump_file = NULL;
+static u32 rxfcs_flag;
static int rx_class_rule_get = -1;
static int rx_class_rule_del = -1;
@@ -792,7 +802,9 @@ static void parse_cmdline(int argc, char **argp)
(mode == MODE_FLASHDEV) ||
(mode == MODE_PERMADDR) ||
(mode == MODE_SET_DUMP) ||
- (mode == MODE_GET_DUMP)) {
+ (mode == MODE_GET_DUMP) ||
+ (mode == MODE_SET_RXFCS) ||
+ (mode == MODE_GET_RXFCS)) {
devname = argp[i];
break;
}
@@ -817,6 +829,9 @@ static void parse_cmdline(int argc, char **argp)
} else if (mode == MODE_SET_DUMP) {
dump_flag = get_u32(argp[i], 0);
break;
+ } else if (mode == MODE_SET_RXFCS) {
+ rxfcs_flag = get_u32(argp[i], 0);
+ break;
}
/* fallthrough */
default:
@@ -1935,6 +1950,10 @@ static int doit(void)
return do_getfwdump(fd, &ifr);
} else if (mode == MODE_SET_DUMP) {
return do_setfwdump(fd, &ifr);
+ } else if (mode == MODE_GET_RXFCS) {
+ return do_grxfcs(fd, &ifr);
+ } else if (mode == MODE_SET_RXFCS) {
+ return do_srxfcs(fd, &ifr);
}
return 69;
@@ -3322,6 +3341,40 @@ static int do_setfwdump(int fd, struct ifreq *ifr)
return 0;
}
+static int do_srxfcs(int fd, struct ifreq *ifr)
+{
+ int err;
+ struct ethtool_value edata;
+
+ edata.cmd = ETHTOOL_SETRXFCS;
+ edata.data = rxfcs_flag;
+ ifr->ifr_data = (caddr_t)&edata;
+ err = send_ioctl(fd, ifr);
+ if (err < 0) {
+ perror("Can not set RX FCS level\n");
+ return 1;
+ }
+ return 0;
+}
+
+static int do_grxfcs(int fd, struct ifreq *ifr)
+{
+ int err;
+ struct ethtool_value edata;
+
+ edata.cmd = ETHTOOL_GETRXFCS;
+ ifr->ifr_data = (caddr_t)&edata;
+ err = send_ioctl(fd, ifr);
+ if (err == 0) {
+ fprintf(stdout, " RX-FCS %s\n",
+ edata.data ? "Enabled" : "Disabled");
+ return 0;
+ } else {
+ perror("Can not get RX FCS level.\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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