aoe: "payload" sysfs file exports per-AoE-command data transfer size (90a2508d) · Commits · 戴 / test

The userland aoetools package includes an "aoe-stat" command that can display a "payload size" column when the aoe driver exports this information. Users can quickly see what amount of user data is transferred inside each AoE command on the network, network headers excluded. Signed-off-by:

Ed Cashin <ecashin@coraid.com> Signed-off-by:

Andrew Morton <akpm@linux-foundation.org> Signed-off-by:

Linus Torvalds <torvalds@linux-foundation.org>

drivers/block/aoe/aoeblk.c

+10 −0

Original line number	Diff line number	Diff line
		@@ -98,6 +98,14 @@ static ssize_t aoedisk_show_fwver(struct device *dev,

		return snprintf(page, PAGE_SIZE, "0x%04x\n", (unsigned int) d->fw_ver);
		}
		static ssize_t aoedisk_show_payload(struct device *dev,
		struct device_attribute attr, char page)
		{
		struct gendisk *disk = dev_to_disk(dev);
		struct aoedev *d = disk->private_data;

		return snprintf(page, PAGE_SIZE, "%lu\n", d->maxbcnt);
		}

		static DEVICE_ATTR(state, S_IRUGO, aoedisk_show_state, NULL);
		static DEVICE_ATTR(mac, S_IRUGO, aoedisk_show_mac, NULL);
		@@ -106,12 +114,14 @@ static struct device_attribute dev_attr_firmware_version = {
		.attr = { .name = "firmware-version", .mode = S_IRUGO },
		.show = aoedisk_show_fwver,
		};
		static DEVICE_ATTR(payload, S_IRUGO, aoedisk_show_payload, NULL);

		static struct attribute *aoe_attrs[] = {
		&dev_attr_state.attr,
		&dev_attr_mac.attr,
		&dev_attr_netif.attr,
		&dev_attr_firmware_version.attr,
		&dev_attr_payload.attr,
		NULL,
		};

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