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Message-ID: <20070731202156.15813.98302.stgit@localhost.localdomain>
Date: Tue, 31 Jul 2007 13:21:56 -0700
From: Auke Kok <auke-jan.h.kok@...el.com>
To: netdev@...r.kernel.org
Cc: jgarzik@...ox.com, davem@...emloft.net
Subject: [PATCH] ethtool: Add support for setting multiple rx/tx queues
Signed-off-by: Auke Kok <auke-jan.h.kok@...el.com>
---
ethtool-copy.h | 23 +++++++++++++
ethtool.8 | 23 +++++++++++++
ethtool.c | 103 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 149 insertions(+), 0 deletions(-)
diff --git a/ethtool-copy.h b/ethtool-copy.h
index ab9d688..aefd580 100644
--- a/ethtool-copy.h
+++ b/ethtool-copy.h
@@ -196,6 +196,23 @@ struct ethtool_ringparam {
__u32 tx_pending;
};
+/* for configuring RX/TX queue count */
+struct ethtool_queueparam {
+ __u32 cmd; /* ETHTOOL_{G,S}QUEUEPARAM */
+
+ /* Read only attributes. These indicate the maximum number
+ * of RX/TX queues the driver will allow the user to set.
+ */
+ __u32 rx_max;
+ __u32 tx_max;
+
+ /* Values changeable by the user. The valid values are
+ * in the range 1 to the "*_max" counterpart above.
+ */
+ __u32 rx;
+ __u32 tx;
+};
+
/* for configuring link flow control parameters */
struct ethtool_pauseparam {
__u32 cmd; /* ETHTOOL_{G,S}PAUSEPARAM */
@@ -295,6 +312,8 @@ int ethtool_op_set_lro(struct net_device *dev, u32 data);
* set_coalesce: Set interrupt coalescing parameters
* get_ringparam: Report ring sizes
* set_ringparam: Set ring sizes
+ * get_queueparam: Report ring sizes
+ * set_queueparam: Set ring sizes
* get_pauseparam: Report pause parameters
* set_pauseparam: Set pause paramters
* get_rx_csum: Report whether receive checksums are turned on or off
@@ -356,6 +375,8 @@ struct ethtool_ops {
int (*set_coalesce)(struct net_device *, struct ethtool_coalesce *);
void (*get_ringparam)(struct net_device *, struct ethtool_ringparam *);
int (*set_ringparam)(struct net_device *, struct ethtool_ringparam *);
+ void (*get_queueparam)(struct net_device *, struct ethtool_queueparam *);
+ int (*set_queueparam)(struct net_device *, struct ethtool_queueparam *);
void (*get_pauseparam)(struct net_device *, struct ethtool_pauseparam*);
int (*set_pauseparam)(struct net_device *, struct ethtool_pauseparam*);
u32 (*get_rx_csum)(struct net_device *);
@@ -422,6 +443,8 @@ struct ethtool_ops {
#define ETHTOOL_SGSO 0x00000024 /* Set GSO enable (ethtool_value) */
#define ETHTOOL_GLRO 0x00000025 /* Get LRO enable (ethtool_value) */
#define ETHTOOL_SLRO 0x00000026 /* Set LRO enable (ethtool_value) */
+#define ETHTOOL_GQUEUEPARAM 0x00000027 /* Get queue parameters */
+#define ETHTOOL_SQUEUEPARAM 0x00000028 /* Set queue parameters. */
/* compatibility with older code */
#define SPARC_ETH_GSET ETHTOOL_GSET
diff --git a/ethtool.8 b/ethtool.8
index 89abf08..3f2e0c0 100644
--- a/ethtool.8
+++ b/ethtool.8
@@ -120,6 +120,17 @@ ethtool \- Display or change ethernet card settings
.RB [ tx
.IR N ]
+
+.B ethtool \-q|\-\-show\-queue
+.I ethX
+
+.B ethtool \-Q|\-\-set\-queue
+.I ethX
+.RB [ rx
+.IR N ]
+.RB [ tx
+.IR N ]
+
.B ethtool \-i|\-\-driver
.I ethX
@@ -243,6 +254,18 @@ Changes the number of ring entries for the Rx Jumbo ring.
.BI tx \ N
Changes the number of ring entries for the Tx ring.
.TP
+.B \-q \-\-show\-queue
+Queries the specified ethernet device for rx/tx queue parameter information.
+.TP
+.B \-Q \-\-set\-queue
+Changes the rx/tx queue parameters of the specified ethernet device.
+.TP
+.BI rx \ N
+Changes the number of Rx queues.
+.TP
+.BI tx \ N
+Changes the number of Tx queues.
+.TP
.B \-i \-\-driver
Queries the specified ethernet device for associated driver information.
.TP
diff --git a/ethtool.c b/ethtool.c
index 4c9844a..227349f 100644
--- a/ethtool.c
+++ b/ethtool.c
@@ -64,6 +64,8 @@ static int do_gpause(int fd, struct ifreq *ifr);
static int do_spause(int fd, struct ifreq *ifr);
static int do_gring(int fd, struct ifreq *ifr);
static int do_sring(int fd, struct ifreq *ifr);
+static int do_gqueue(int fd, struct ifreq *ifr);
+static int do_squeue(int fd, struct ifreq *ifr);
static int do_gcoalesce(int fd, struct ifreq *ifr);
static int do_scoalesce(int fd, struct ifreq *ifr);
static int do_goffload(int fd, struct ifreq *ifr);
@@ -87,6 +89,8 @@ static enum {
MODE_SCOALESCE,
MODE_GRING,
MODE_SRING,
+ MODE_GQUEUE,
+ MODE_SQUEUE,
MODE_GOFFLOAD,
MODE_SOFFLOAD,
MODE_GSTATS,
@@ -144,6 +148,10 @@ static struct option {
" [ rx-mini N ]\n"
" [ rx-jumbo N ]\n"
" [ tx N ]\n" },
+ { "-q", "--show-queue", MODE_GQUEUE, "Query RX/TX queue parameters" },
+ { "-Q", "--set-queue", MODE_SQUEUE, "Set RX/TX queue parameters",
+ " [ rx N ]\n"
+ " [ tx N ]\n" },
{ "-k", "--show-offload", MODE_GOFFLOAD, "Get protocol offload information" },
{ "-K", "--offload", MODE_SOFFLOAD, "Set protocol offload",
" [ rx on|off ]\n"
@@ -216,6 +224,11 @@ static int ring_rx_mini_wanted = -1;
static int ring_rx_jumbo_wanted = -1;
static int ring_tx_wanted = -1;
+static struct ethtool_queueparam equeue;
+static int gqueue_changed = 0;
+static int queue_rx = -1;
+static int queue_tx = -1;
+
static struct ethtool_coalesce ecoal;
static int gcoalesce_changed = 0;
static int coal_stats_wanted = -1;
@@ -328,6 +341,11 @@ static struct cmdline_info cmdline_ring[] = {
{ "tx", CMDL_INT, &ring_tx_wanted, &ering.tx_pending },
};
+static struct cmdline_info cmdline_queue[] = {
+ { "rx", CMDL_INT, &queue_rx, &equeue.rx},
+ { "tx", CMDL_INT, &queue_tx, &equeue.tx},
+};
+
static struct cmdline_info cmdline_coalesce[] = {
{ "adaptive-rx", CMDL_BOOL, &coal_adaptive_rx_wanted, &ecoal.use_adaptive_rx_coalesce },
{ "adaptive-tx", CMDL_BOOL, &coal_adaptive_tx_wanted, &ecoal.use_adaptive_tx_coalesce },
@@ -430,6 +448,8 @@ static void parse_cmdline(int argc, char **argp)
(mode == MODE_SCOALESCE) ||
(mode == MODE_GRING) ||
(mode == MODE_SRING) ||
+ (mode == MODE_GQUEUE) ||
+ (mode == MODE_SQUEUE) ||
(mode == MODE_GOFFLOAD) ||
(mode == MODE_SOFFLOAD) ||
(mode == MODE_GSTATS) ||
@@ -496,6 +516,14 @@ static void parse_cmdline(int argc, char **argp)
i = argc;
break;
}
+ if (mode == MODE_SQUEUE) {
+ parse_generic_cmdline(argc, argp, i,
+ &gqueue_changed,
+ cmdline_ring,
+ ARRAY_SIZE(cmdline_queue));
+ i = argc;
+ break;
+ }
if (mode == MODE_SCOALESCE) {
parse_generic_cmdline(argc, argp, i,
&gcoalesce_changed,
@@ -1150,6 +1178,26 @@ static int dump_ring(void)
return 0;
}
+static int dump_queue(void)
+{
+ fprintf(stdout,
+ "Pre-set maximums:\n"
+ "RX: %u\n"
+ "TX: %u\n",
+ equeue.rx_max,
+ equeue.tx_max);
+
+ fprintf(stdout,
+ "Current hardware settings:\n"
+ "RX: %u\n"
+ "TX: %u\n",
+ equeue.rx,
+ equeue.tx);
+
+ fprintf(stdout, "\n");
+ return 0;
+}
+
static int dump_coalesce(void)
{
fprintf(stdout, "Adaptive RX: %s TX: %s\n",
@@ -1278,6 +1326,10 @@ static int doit(void)
return do_gring(fd, &ifr);
} else if (mode == MODE_SRING) {
return do_sring(fd, &ifr);
+ } else if (mode == MODE_GQUEUE) {
+ return do_gqueue(fd, &ifr);
+ } else if (mode == MODE_SQUEUE) {
+ return do_squeue(fd, &ifr);
} else if (mode == MODE_GOFFLOAD) {
return do_goffload(fd, &ifr);
} else if (mode == MODE_SOFFLOAD) {
@@ -1435,6 +1487,57 @@ static int do_gring(int fd, struct ifreq *ifr)
return 0;
}
+static int do_squeue(int fd, struct ifreq *ifr)
+{
+ int err, changed = 0;
+
+ equeue.cmd = ETHTOOL_GQUEUEPARAM;
+ ifr->ifr_data = (caddr_t)&equeue;
+ err = ioctl(fd, SIOCETHTOOL, ifr);
+ if (err) {
+ perror("Cannot get device queue settings");
+ return 76;
+ }
+
+ do_generic_set(cmdline_queue, ARRAY_SIZE(cmdline_queue), &changed);
+
+ if (!changed) {
+ fprintf(stderr, "no queue parameters changed, aborting\n");
+ return 80;
+ }
+
+ equeue.cmd = ETHTOOL_SQUEUEPARAM;
+ ifr->ifr_data = (caddr_t)&equeue;
+ err = ioctl(fd, SIOCETHTOOL, ifr);
+ if (err) {
+ perror("Cannot set device queue parameters");
+ return 81;
+ }
+
+ return 0;
+}
+
+static int do_gqueue(int fd, struct ifreq *ifr)
+{
+ int err;
+
+ fprintf(stdout, "Queue parameters for %s:\n", devname);
+
+ equeue.cmd = ETHTOOL_GQUEUEPARAM;
+ ifr->ifr_data = (caddr_t)&equeue;
+ err = ioctl(fd, SIOCETHTOOL, ifr);
+ if (err == 0) {
+ err = dump_queue();
+ if (err)
+ return err;
+ } else {
+ perror("Cannot get device queue settings");
+ return 76;
+ }
+
+ return 0;
+}
+
static int do_gcoalesce(int fd, struct ifreq *ifr)
{
int err;
-
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