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Message-ID: <20100328154730.5261e8cf@nehalam>
Date: Sun, 28 Mar 2010 15:47:30 -0700
From: Stephen Hemminger <shemminger@...tta.com>
To: David Miller <davem@...emloft.net>
Cc: netdev@...r.kernel.org
Subject: [PATCH 2/2] ethtool: add RSS command flag
Add RSS offload option to ethtool command.
Also, fix ethtool header to be pure version from net-next.
ethtool-copy.h should be generated by kernel 'make install_headers' to ensure
that all fields match exactly.
Signed-off-by: Stephen Hemminger <shemminger@...tta.com>
---
ethtool-copy.h | 32 +++++++++++++++++++++++++-------
ethtool.8 | 4 ++++
ethtool.c | 43 ++++++++++++++++++++++++++++++++++++++-----
3 files changed, 67 insertions(+), 12 deletions(-)
diff --git a/ethtool-copy.h b/ethtool-copy.h
index 8681f5e..a20fe84 100644
--- a/ethtool-copy.h
+++ b/ethtool-copy.h
@@ -36,7 +36,7 @@ struct ethtool_cmd {
__u32 reserved[2];
};
-static inline void ethtool_cmd_speed_set(struct ethtool_cmd *ep,
+static __inline__ void ethtool_cmd_speed_set(struct ethtool_cmd *ep,
__u32 speed)
{
@@ -44,7 +44,7 @@ static inline void ethtool_cmd_speed_set(struct ethtool_cmd *ep,
ep->speed_hi = (__u16)(speed >> 16);
}
-static inline __u32 ethtool_cmd_speed(struct ethtool_cmd *ep)
+static __inline__ __u32 ethtool_cmd_speed(struct ethtool_cmd *ep)
{
return (ep->speed_hi << 16) | ep->speed;
}
@@ -61,6 +61,13 @@ struct ethtool_drvinfo {
/* For PCI devices, use pci_name(pci_dev). */
char reserved1[32];
char reserved2[12];
+ /*
+ * Some struct members below are filled in
+ * using ops->get_sset_count(). Obtaining
+ * this info from ethtool_drvinfo is now
+ * deprecated; Use ETHTOOL_GSSET_INFO
+ * instead.
+ */
__u32 n_priv_flags; /* number of flags valid in ETHTOOL_GPFLAGS */
__u32 n_stats; /* number of u64's from ETHTOOL_GSTATS */
__u32 testinfo_len;
@@ -253,6 +260,17 @@ struct ethtool_gstrings {
__u8 data[0];
};
+struct ethtool_sset_info {
+ __u32 cmd; /* ETHTOOL_GSSET_INFO */
+ __u32 reserved;
+ __u64 sset_mask; /* input: each bit selects an sset to query */
+ /* output: each bit a returned sset */
+ __u32 data[0]; /* ETH_SS_xxx count, in order, based on bits
+ in sset_mask. One bit implies one
+ __u32, two bits implies two
+ __u32's, etc. */
+};
+
enum ethtool_test_flags {
ETH_TEST_FL_OFFLINE = (1 << 0), /* online / offline */
ETH_TEST_FL_FAILED = (1 << 1), /* test passed / failed */
@@ -292,6 +310,7 @@ struct ethtool_perm_addr {
enum ethtool_flags {
ETH_FLAG_LRO = (1 << 15), /* LRO is enabled */
ETH_FLAG_NTUPLE = (1 << 27), /* N-tuple filters enabled */
+ ETH_FLAG_RSS = (1 << 28),
};
/* The following structures are for supporting RX network flow
@@ -389,8 +408,6 @@ struct ethtool_rx_ntuple_flow_spec {
#define ETHTOOL_RXNTUPLE_ACTION_DROP -1
};
-#define ETHTOOL_MAX_NTUPLE_LIST_ENTRY 1024
-#define ETHTOOL_MAX_NTUPLE_STRING_PER_ENTRY 14
struct ethtool_rx_ntuple {
__u32 cmd;
struct ethtool_rx_ntuple_flow_spec fs;
@@ -408,6 +425,7 @@ struct ethtool_flash {
char data[ETHTOOL_FLASH_MAX_FILENAME];
};
+
/* CMDs currently supported */
#define ETHTOOL_GSET 0x00000001 /* Get settings. */
#define ETHTOOL_SSET 0x00000002 /* Set settings. */
@@ -463,9 +481,9 @@ struct ethtool_flash {
#define ETHTOOL_SRXCLSRLINS 0x00000032 /* Insert RX classification rule */
#define ETHTOOL_FLASHDEV 0x00000033 /* Flash firmware to device */
#define ETHTOOL_RESET 0x00000034 /* Reset hardware */
-
-#define ETHTOOL_SRXNTUPLE 0x00000035 /* Add an n-tuple filter to device */
-#define ETHTOOL_GRXNTUPLE 0x00000036 /* Get n-tuple filters from device */
+#define ETHTOOL_SRXNTUPLE 0x00000035 /* Add an n-tuple filter to device */
+#define ETHTOOL_GRXNTUPLE 0x00000036 /* Get n-tuple filters from device */
+#define ETHTOOL_GSSET_INFO 0x00000037 /* Get string set info */
/* compatibility with older code */
#define SPARC_ETH_GSET ETHTOOL_GSET
diff --git a/ethtool.8 b/ethtool.8
index eb6430b..a5afe13 100644
--- a/ethtool.8
+++ b/ethtool.8
@@ -170,6 +170,7 @@ ethtool \- Display or change ethernet card settings
.B2 gso on off
.B2 gro on off
.B2 lro on off
+.B2 rss on off
.B ethtool \-p|\-\-identify
.I ethX
@@ -362,6 +363,9 @@ Specifies whether generic receive offload should be enabled
.A2 lro on off
Specifies whether large receive offload should be enabled
.TP
+.A2 rss on off
+Specifies whether Receive Side Scaling hashing should be enabled
+.TP
.B \-p \-\-identify
Initiates adapter-specific action intended to enable an operator to
easily identify the adapter by sight. Typically this involves
diff --git a/ethtool.c b/ethtool.c
index fc9e419..8b6cc77 100644
--- a/ethtool.c
+++ b/ethtool.c
@@ -173,6 +173,8 @@ static struct option {
" [ gro on|off ]\n"
" [ lro on|off ]\n"
" [ ntuple on|off ]\n"
+ " [ rss on|off ]\n"
+
},
{ "-i", "--driver", MODE_GDRV, "Show driver information" },
{ "-d", "--register-dump", MODE_GREGS, "Do a register dump",
@@ -257,6 +259,7 @@ static int off_gso_wanted = -1;
static int off_lro_wanted = -1;
static int off_gro_wanted = -1;
static int off_ntuple_wanted = -1;
+static int off_rss_wanted = -1;
static struct ethtool_pauseparam epause;
static int gpause_changed = 0;
@@ -382,6 +385,7 @@ static struct cmdline_info cmdline_offload[] = {
{ "lro", CMDL_BOOL, &off_lro_wanted, NULL },
{ "gro", CMDL_BOOL, &off_gro_wanted, NULL },
{ "ntuple", CMDL_BOOL, &off_ntuple_wanted, NULL },
+ { "rss", CMDL_BOOL, &off_rss_wanted, NULL },
};
static struct cmdline_info cmdline_pause[] = {
@@ -1526,7 +1530,7 @@ static int dump_coalesce(void)
}
static int dump_offload(int rx, int tx, int sg, int tso, int ufo, int gso,
- int gro, int lro, int ntuple)
+ int gro, int lro, int ntuple, int rss)
{
fprintf(stdout,
"rx-checksumming: %s\n"
@@ -1537,7 +1541,8 @@ static int dump_offload(int rx, int tx, int sg, int tso, int ufo, int gso,
"generic-segmentation-offload: %s\n"
"generic-receive-offload: %s\n"
"large-receive-offload: %s\n"
- "ntuple-filters: %s\n",
+ "ntuple-filters: %s\n"
+ "receive-side-scaling: %s\n",
rx ? "on" : "off",
tx ? "on" : "off",
sg ? "on" : "off",
@@ -1546,7 +1551,8 @@ static int dump_offload(int rx, int tx, int sg, int tso, int ufo, int gso,
gso ? "on" : "off",
gro ? "on" : "off",
lro ? "on" : "off",
- ntuple ? "on" : "off");
+ ntuple ? "on" : "off",
+ rss ? "on" : "off");
return 0;
}
@@ -1863,7 +1869,7 @@ static int do_goffload(int fd, struct ifreq *ifr)
{
struct ethtool_value eval;
int err, allfail = 1, rx = 0, tx = 0, sg = 0;
- int tso = 0, ufo = 0, gso = 0, gro = 0, lro = 0, ntuple = 0;
+ int tso = 0, ufo = 0, gso = 0, gro = 0, lro = 0, ntuple = 0, rss = 0;
fprintf(stdout, "Offload parameters for %s:\n", devname);
@@ -1935,6 +1941,7 @@ static int do_goffload(int fd, struct ifreq *ifr)
} else {
lro = (eval.data & ETH_FLAG_LRO) != 0;
ntuple = (eval.data & ETH_FLAG_NTUPLE) != 0;
+ rss = (eval.data & ETH_FLAG_RSS) != 0;
allfail = 0;
}
@@ -1953,7 +1960,7 @@ static int do_goffload(int fd, struct ifreq *ifr)
return 83;
}
- return dump_offload(rx, tx, sg, tso, ufo, gso, gro, lro, ntuple);
+ return dump_offload(rx, tx, sg, tso, ufo, gso, gro, lro, ntuple, rss);
}
static int do_soffload(int fd, struct ifreq *ifr)
@@ -2087,6 +2094,29 @@ static int do_soffload(int fd, struct ifreq *ifr)
return 93;
}
}
+ if (off_rss_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_rss_wanted)
+ eval.data |= ETH_FLAG_RSS;
+ else
+ eval.data &= ~ETH_FLAG_RSS;
+
+ err = ioctl(fd, SIOCETHTOOL, ifr);
+ if (err) {
+ perror("Cannot set n-tuple filter settings");
+ return 93;
+ }
+ }
if (!changed) {
fprintf(stdout, "no offload settings changed\n");
@@ -2655,6 +2685,9 @@ static int do_srxntuple(int fd, struct ifreq *ifr)
return 0;
}
+#define ETHTOOL_MAX_NTUPLE_LIST_ENTRY 1024
+#define ETHTOOL_MAX_NTUPLE_STRING_PER_ENTRY 14
+
static int do_grxntuple(int fd, struct ifreq *ifr)
{
struct ethtool_gstrings *strings;
--
1.6.3.3
--
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