From 88b18f597ad7fa93498bec9e8ad054d23757051f Mon Sep 17 00:00:00 2001 From: Ed Cashin Date: Fri, 9 Nov 2012 14:05:13 +1100 Subject: [PATCH] aoe: "payload" sysfs file exports per-AoE-command data transfer size 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 Signed-off-by: Andrew Morton --- drivers/block/aoe/aoeblk.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c index d5aa3b8c9f33..56736cd5f3fe 100644 --- a/drivers/block/aoe/aoeblk.c +++ b/drivers/block/aoe/aoeblk.c @@ -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, }; -- 2.39.5