| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20190301081532.11771-4-jeffrey.t.kirsher@intel.com>
Date: Fri, 1 Mar 2019 00:15:30 -0800
From: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To: linville@...driver.com
Cc: Nicholas Nunley <nicholas.d.nunley@...el.com>,
netdev@...r.kernel.org
Subject: [PATCH v3 4/6] ethtool: support per-queue sub command --show-coalesce
From: Nicholas Nunley <nicholas.d.nunley@...el.com>
Get all masked queues' coalesce settings from kernel and dump them one by
one.
Example:
$ sudo ./ethtool --per-queue eth5 queue_mask 0x11 --show-coalesce
Queue: 0
Adaptive RX: off TX: off
stats-block-usecs: 0
sample-interval: 0
pkt-rate-low: 0
pkt-rate-high: 0
rx-usecs: 222
rx-frames: 0
rx-usecs-irq: 0
rx-frames-irq: 256
tx-usecs: 222
tx-frames: 0
tx-usecs-irq: 0
tx-frames-irq: 256
rx-usecs-low: 0
rx-frame-low: 0
tx-usecs-low: 0
tx-frame-low: 0
rx-usecs-high: 0
rx-frame-high: 0
tx-usecs-high: 0
tx-frame-high: 0
Queue: 4
Adaptive RX: off TX: off
stats-block-usecs: 0
sample-interval: 0
pkt-rate-low: 0
pkt-rate-high: 0
rx-usecs: 222
rx-frames: 0
rx-usecs-irq: 0
rx-frames-irq: 256
tx-usecs: 222
tx-frames: 0
tx-usecs-irq: 0
tx-frames-irq: 256
rx-usecs-low: 0
rx-frame-low: 0
tx-usecs-low: 0
tx-frame-low: 0
rx-usecs-high: 0
rx-frame-high: 0
tx-usecs-high: 0
tx-frame-high: 0
Based on patch by Kan Liang <kan.liang@...el.com>
Signed-off-by: Nicholas Nunley <nicholas.d.nunley@...el.com>
---
ethtool.8.in | 2 +-
ethtool.c | 68 +++++++++++++++++++++++++++++++++++++++++++++++++---
2 files changed, 66 insertions(+), 4 deletions(-)
diff --git a/ethtool.8.in b/ethtool.8.in
index 10f24db..b4e240e 100644
--- a/ethtool.8.in
+++ b/ethtool.8.in
@@ -1153,7 +1153,7 @@ Sets the specific queues which the sub command is applied to.
If queue_mask is not set, the sub command will be applied to all queues.
.TP
.B sub_command
-Sub command to apply.
+Sub command to apply. The supported sub commands include --show-coalesce.
.RE
.SH BUGS
Not supported (in part or whole) on all network drivers.
diff --git a/ethtool.c b/ethtool.c
index 5f72741..1abf7c0 100644
--- a/ethtool.c
+++ b/ethtool.c
@@ -1410,6 +1410,31 @@ static int dump_coalesce(const struct ethtool_coalesce *ecoal)
return 0;
}
+void dump_per_queue_coalesce(struct ethtool_per_queue_op *per_queue_opt,
+ __u32 *queue_mask, int n_queues)
+{
+ struct ethtool_coalesce *ecoal;
+ int i, idx = 0;
+
+ ecoal = (struct ethtool_coalesce *)(per_queue_opt + 1);
+ for (i = 0; i < __KERNEL_DIV_ROUND_UP(MAX_NUM_QUEUE, 32); i++) {
+ int queue = i * 32;
+ __u32 mask = queue_mask[i];
+
+ while (mask > 0) {
+ if (mask & 0x1) {
+ fprintf(stdout, "Queue: %d\n", queue);
+ dump_coalesce(ecoal + idx);
+ idx++;
+ }
+ mask = mask >> 1;
+ queue++;
+ }
+ if (idx == n_queues)
+ break;
+ }
+}
+
struct feature_state {
u32 off_flags;
struct ethtool_gfeatures features;
@@ -5248,7 +5273,8 @@ static const struct option {
{ "--show-fec", 1, do_gfec, "Show FEC settings"},
{ "--set-fec", 1, do_sfec, "Set FEC settings",
" [ encoding auto|off|rs|baser [...]]\n"},
- { "-Q|--per-queue", 1, do_perqueue, "Apply per-queue command",
+ { "-Q|--per-queue", 1, do_perqueue, "Apply per-queue command."
+ "The supported sub commands include --show-coalesce",
" [queue_mask %x] SUB_COMMAND\n"},
{ "-h|--help", 0, show_usage, "Show this help" },
{ "--version", 0, do_version, "Show version number" },
@@ -5315,8 +5341,32 @@ static int find_max_num_queues(struct cmd_context *ctx)
echannels.combined_count;
}
+static struct ethtool_per_queue_op *
+get_per_queue_coalesce(struct cmd_context *ctx, __u32 *queue_mask, int n_queues)
+{
+ struct ethtool_per_queue_op *per_queue_opt;
+
+ per_queue_opt = malloc(sizeof(*per_queue_opt) + n_queues *
+ sizeof(struct ethtool_coalesce));
+ if (!per_queue_opt)
+ return NULL;
+
+ memcpy(per_queue_opt->queue_mask, queue_mask,
+ __KERNEL_DIV_ROUND_UP(MAX_NUM_QUEUE, 32) * sizeof(__u32));
+ per_queue_opt->cmd = ETHTOOL_PERQUEUE;
+ per_queue_opt->sub_command = ETHTOOL_GCOALESCE;
+ if (send_ioctl(ctx, per_queue_opt)) {
+ free(per_queue_opt);
+ perror("Cannot get device per queue parameters");
+ return NULL;
+ }
+
+ return per_queue_opt;
+}
+
static int do_perqueue(struct cmd_context *ctx)
{
+ struct ethtool_per_queue_op *per_queue_opt;
__u32 queue_mask[__KERNEL_DIV_ROUND_UP(MAX_NUM_QUEUE, 32)] = {0};
int i, n_queues = 0;
@@ -5367,9 +5417,21 @@ static int do_perqueue(struct cmd_context *ctx)
if (i < 0)
exit_bad_args();
- /* no sub_command support yet */
+ if (strstr(args[i].opts, "--show-coalesce") != NULL) {
+ per_queue_opt = get_per_queue_coalesce(ctx, queue_mask,
+ n_queues);
+ if (per_queue_opt == NULL) {
+ perror("Cannot get device per queue parameters");
+ return -EFAULT;
+ }
+ dump_per_queue_coalesce(per_queue_opt, queue_mask, n_queues);
+ free(per_queue_opt);
+ } else {
+ perror("The subcommand is not supported yet");
+ return -EOPNOTSUPP;
+ }
- return -EOPNOTSUPP;
+ return 0;
}
int main(int argc, char **argp)
--
2.20.1
Powered by blists - more mailing lists