From mboxrd@z Thu Jan 1 00:00:00 1970 From: ravinandan.arakali@neterion.com Subject: [PATCH 2.6.12-rc4] ethtool: Support for UDP Large Send Offload Date: Thu, 2 Jun 2005 17:43:58 -0700 (PDT) Message-ID: <20050603004358.28C4B7B99F@linux.site> Cc: raghavendra.koushik@neterion.com, ravinandan.arakali@neterion.com, leonid.grossman@neterion.com, ananda.raju@neterion.com, rapuru.sriram@neterion.com Return-path: To: davem@davemloft.net, jgarzik@pobox.com, netdev@oss.sgi.com Sender: netdev-bounce@oss.sgi.com Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org Hi, Attached below is a patch on ethtool utility to support USO(UDP Large Send Offload). Pls review the patch. Usage: 1. To view USO setting # ethtool -k 2. To set/unset USO # ethtool -K uso on|off Signed-off-by: Ananda Raju Signed-off-by: Ravinandan Arakali --- diff -uNr ethtool-3/ethtool-copy.h ethtool-3_uso/ethtool-copy.h --- ethtool-3/ethtool-copy.h 2005-01-28 01:50:26.000000000 +0545 +++ ethtool-3_uso/ethtool-copy.h 2005-06-02 23:06:48.000000000 +0545 @@ -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_GUSO 0x00000020 /* Get USO enable (ethtool_value) */ +#define ETHTOOL_SUSO 0x00000021 /* Set USO enable (ethtool_value) */ /* compatibility with older code */ #define SPARC_ETH_GSET ETHTOOL_GSET diff -uNr ethtool-3/ethtool.c ethtool-3_uso/ethtool.c --- ethtool-3/ethtool.c 2005-01-28 04:19:29.000000000 +0545 +++ ethtool-3_uso/ethtool.c 2005-06-02 23:06:52.000000000 +0545 @@ -119,6 +119,7 @@ * [ tx on|off ] \ * [ sg on|off ] \ * [ tso on|off ] + * [ uso 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" + " [ uso 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_uso_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 }, + { "uso", CMDL_BOOL, &off_uso_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 uso) { 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 large send offload: %s\n", rx ? "on" : "off", tx ? "on" : "off", sg ? "on" : "off", - tso ? "on" : "off"); + tso ? "on" : "off", + uso ? "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, uso = 0; fprintf(stdout, "Offload parameters for %s:\n", devname); @@ -1502,12 +1508,22 @@ allfail = 0; } + eval.cmd = ETHTOOL_GUSO; + ifr->ifr_data = (caddr_t)&eval; + err = ioctl(fd, SIOCETHTOOL, ifr); + if (err) + perror("Cannot get device udp large send offload settings"); + else { + uso = 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, uso); } static int do_soffload(int fd, struct ifreq *ifr) @@ -1562,6 +1578,17 @@ return 88; } } + if (off_uso_wanted >= 0) { + changed = 1; + eval.cmd = ETHTOOL_SUSO; + eval.data = (off_uso_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"); }