From c36a51cd7ee9a31981f904a7406b798f1f75ee8e Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Thu, 17 Apr 2008 13:11:21 +0100 Subject: ethtool: command line support for lro Add lro support to command in similar manner to TSO, GSO, etc. Based on patch by Stephen Hemminger . My changes: - Changed error return codes for setting LRO to be unique. - Report failure to get device flags, consistent with other offload settings. - Fixed code spacing. Tested with the sfc driver. Signed-off-by: Ben Hutchings Signed-off-by: Jeff Garzik --- ethtool.c | 53 +++++++++++++++++++++++++++++++++++++++++++++++------ 1 file changed, 47 insertions(+), 6 deletions(-) diff --git a/ethtool.c b/ethtool.c index 2266067..a7c02d0 100644 --- a/ethtool.c +++ b/ethtool.c @@ -159,7 +159,9 @@ static struct option { " [ sg on|off ]\n" " [ tso on|off ]\n" " [ ufo on|off ]\n" - " [ gso on|off ]\n" }, + " [ gso on|off ]\n" + " [ lro on|off ]\n" + }, { "-i", "--driver", MODE_GDRV, "Show driver information" }, { "-d", "--register-dump", MODE_GREGS, "Do a register dump", " [ raw on|off ]\n" @@ -216,6 +218,7 @@ static int off_sg_wanted = -1; static int off_tso_wanted = -1; static int off_ufo_wanted = -1; static int off_gso_wanted = -1; +static int off_lro_wanted = -1; static struct ethtool_pauseparam epause; static int gpause_changed = 0; @@ -330,6 +333,7 @@ static struct cmdline_info cmdline_offload[] = { { "tso", CMDL_BOOL, &off_tso_wanted, NULL }, { "ufo", CMDL_BOOL, &off_ufo_wanted, NULL }, { "gso", CMDL_BOOL, &off_gso_wanted, NULL }, + { "lro", CMDL_BOOL, &off_lro_wanted, NULL }, }; static struct cmdline_info cmdline_pause[] = { @@ -1383,7 +1387,7 @@ static int dump_coalesce(void) return 0; } -static int dump_offload (int rx, int tx, int sg, int tso, int ufo, int gso) +static int dump_offload(int rx, int tx, int sg, int tso, int ufo, int gso, int lro) { fprintf(stdout, "rx-checksumming: %s\n" @@ -1391,13 +1395,15 @@ static int dump_offload (int rx, int tx, int sg, int tso, int ufo, int gso) "scatter-gather: %s\n" "tcp segmentation offload: %s\n" "udp fragmentation offload: %s\n" - "generic segmentation offload: %s\n", + "generic segmentation offload: %s\n" + "large receive offload: %s\n", rx ? "on" : "off", tx ? "on" : "off", sg ? "on" : "off", tso ? "on" : "off", ufo ? "on" : "off", - gso ? "on" : "off"); + gso ? "on" : "off", + lro ? "on" : "off"); return 0; } @@ -1707,7 +1713,8 @@ static int do_scoalesce(int fd, struct ifreq *ifr) 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, ufo = 0, gso = 0; + int err, allfail = 1, rx = 0, tx = 0, sg = 0; + int tso = 0, ufo = 0, gso = 0, lro = 0; fprintf(stdout, "Offload parameters for %s:\n", devname); @@ -1771,12 +1778,22 @@ static int do_goffload(int fd, struct ifreq *ifr) allfail = 0; } + eval.cmd = ETHTOOL_GFLAGS; + ifr->ifr_data = (caddr_t)&eval; + err = ioctl(fd, SIOCETHTOOL, ifr); + if (err) { + perror("Cannot get device flags"); + } else { + lro = (eval.data & ETH_FLAG_LRO) != 0; + allfail = 0; + } + if (allfail) { fprintf(stdout, "no offload info available\n"); return 83; } - return dump_offload(rx, tx, sg, tso, ufo, gso); + return dump_offload(rx, tx, sg, tso, ufo, gso, lro); } static int do_soffload(int fd, struct ifreq *ifr) @@ -1853,6 +1870,30 @@ static int do_soffload(int fd, struct ifreq *ifr) return 90; } } + if (off_lro_wanted >= 0) { + changed = 1; + eval.cmd = ETHTOOL_GFLAGS; + eval.data = 0; + ifr->ifr_data = (caddr_t)&eval; + err = ioctl(fd, SIOCETHTOOL, ifr); + if (err) { + perror("Cannot get device flag settings"); + return 91; + } + + eval.cmd = ETHTOOL_SFLAGS; + if (off_lro_wanted == 1) + eval.data |= ETH_FLAG_LRO; + else + eval.data &= ~ETH_FLAG_LRO; + + err = ioctl(fd, SIOCETHTOOL, ifr); + if (err) { + perror("Cannot set large receive offload settings"); + return 92; + } + } + if (!changed) { fprintf(stdout, "no offload settings changed\n"); } -- cgit v1.2.1