Hi,
Kernel version 2.6.15 onwards provides UDP Fragmentation Offload (UFO)
This patch to ethtool provides UFO (UDP Fragmentation Offload) on/off support
using -K option similar to feature TSO.
To find out whether UFO is enabled or not use
#ethtool -k eth3
Offload parameters for eth3:
rx-checksumming: on
tx-checksumming: on
scatter-gather: on
tcp segmentation offload: on
udp fragmentation offload: on
#
To turn off UFO use following command.
#ethtool -K eth3 ufo off
To turn off UFO use following command.
#ethtool -K eth3 ufo on
Please review the patch.
Signed-off-by: Ananda Raju <[EMAIL PROTECTED]>
---
diff -uNr ethtool-3/ethtool-copy.h ethtool-3_ufo/ethtool-copy.h
--- ethtool-3/ethtool-copy.h 2005-10-14 08:34:20.000000000 -0700
+++ ethtool-3_ufo/ethtool-copy.h 2005-10-14 08:33:41.000000000 -0700
@@ -283,6 +283,8 @@
#define ETHTOOL_GSTATS 0x0000001d /* get NIC-specific statistics */
#define ETHTOOL_GTSO 0x0000001e /* Get TSO enable (ethtool_value) */
#define ETHTOOL_STSO 0x0000001f /* Set TSO enable (ethtool_value) */
+#define ETHTOOL_GUFO 0x00000021 /* Get UFO enable (ethtool_value) */
+#define ETHTOOL_SUFO 0x00000022 /* Set UFO enable (ethtool_value) */
/* compatibility with older code */
#define SPARC_ETH_GSET ETHTOOL_GSET
diff -uNr ethtool-3/ethtool.c ethtool-3_ufo/ethtool.c
--- ethtool-3/ethtool.c 2005-10-14 08:34:15.000000000 -0700
+++ ethtool-3_ufo/ethtool.c 2005-10-14 08:33:26.000000000 -0700
@@ -119,6 +119,7 @@
* [ tx on|off ] \
* [ sg on|off ] \
* [ tso on|off ]
+ * [ ufo on|off ]
* ethtool -r DEVNAME
* ethtool -p DEVNAME [ %d ]
* ethtool -t DEVNAME [ online|offline ]
@@ -191,6 +192,7 @@
" [ tx on|off ] \\\n"
" [ sg on|off ] \\\n"
" [ tso on|off ]\n"
+ " [ ufo on|off ]\n"
" ethtool -r DEVNAME\n"
" ethtool -p DEVNAME [ %%d ]\n"
" ethtool -t DEVNAME [online|(offline)]\n"
@@ -236,6 +238,7 @@
static int off_csum_tx_wanted = -1;
static int off_sg_wanted = -1;
static int off_tso_wanted = -1;
+static int off_ufo_wanted = -1;
static struct ethtool_pauseparam epause;
static int gpause_changed = 0;
@@ -339,6 +342,7 @@
{ "tx", CMDL_BOOL, &off_csum_tx_wanted, NULL },
{ "sg", CMDL_BOOL, &off_sg_wanted, NULL },
{ "tso", CMDL_BOOL, &off_tso_wanted, NULL },
+ { "ufo", CMDL_BOOL, &off_ufo_wanted, NULL },
};
static struct cmdline_info cmdline_pause[] = {
@@ -1184,17 +1188,19 @@
return 0;
}
-static int dump_offload (int rx, int tx, int sg, int tso)
+static int dump_offload (int rx, int tx, int sg, int tso, int ufo)
{
fprintf(stdout,
"rx-checksumming: %s\n"
"tx-checksumming: %s\n"
"scatter-gather: %s\n"
- "tcp segmentation offload: %s\n",
+ "tcp segmentation offload: %s\n"
+ "udp fragmentation offload: %s\n",
rx ? "on" : "off",
tx ? "on" : "off",
sg ? "on" : "off",
- tso ? "on" : "off");
+ tso ? "on" : "off",
+ ufo ? "on" : "off");
return 0;
}
@@ -1458,7 +1464,7 @@
static int do_goffload(int fd, struct ifreq *ifr)
{
struct ethtool_value eval;
- int err, allfail = 1, rx = 0, tx = 0, sg = 0, tso = 0;
+ int err, allfail = 1, rx = 0, tx = 0, sg = 0, tso = 0, ufo = 0;
fprintf(stdout, "Offload parameters for %s:\n", devname);
@@ -1502,12 +1508,22 @@
allfail = 0;
}
+ eval.cmd = ETHTOOL_GUFO;
+ ifr->ifr_data = (caddr_t)&eval;
+ err = ioctl(fd, SIOCETHTOOL, ifr);
+ if (err)
+ perror("Cannot get device udp large send offload settings");
+ else {
+ ufo = eval.data;
+ allfail = 0;
+ }
+
if (allfail) {
fprintf(stdout, "no offload info available\n");
return 83;
}
- return dump_offload(rx, tx, sg, tso);
+ return dump_offload(rx, tx, sg, tso, ufo);
}
static int do_soffload(int fd, struct ifreq *ifr)
@@ -1562,6 +1578,17 @@
return 88;
}
}
+ if (off_ufo_wanted >= 0) {
+ changed = 1;
+ eval.cmd = ETHTOOL_SUFO;
+ eval.data = (off_ufo_wanted == 1);
+ ifr->ifr_data = (caddr_t)&eval;
+ err = ioctl(fd, SIOCETHTOOL, ifr);
+ if (err) {
+ perror("Cannot set device udp large send offload
settings");
+ return 89;
+ }
+ }
if (!changed) {
fprintf(stdout, "no offload settings changed\n");
}
-
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