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authorHannes Reinecke <hare@suse.de>2016-02-25 09:56:04 -0800
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2016-05-16 11:14:23 -0400
commit9a99425f0736a416442525ac7b15903173888b86 (patch)
treec02eb2ce974720b40d076faa9f24766c148d3f9f /drivers/firmware/iscsi_ibft.c
parent18558cae0272f8fd9647e69d3fec1565a7949865 (diff)
downloadlinux-9a99425f0736a416442525ac7b15903173888b86.tar.bz2
iscsi_ibft: Add prefix-len attr and display netmask
The iBFT table only specifies a prefix length, not a netmask. And the netmask is pretty much pointless for IPv6. So introduce a new attribute 'prefix-len'. Some older user-space code might rely on the netmask attribute being present, so we should always display it. Changes from v1: - Combined two patches into one Changes from v2: - Cleaned up/corrected wording for patch description Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Lee Duncan <lduncan@suse.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Konrad Rzeszutek Wilk <konrad@kernel.org>
Diffstat (limited to 'drivers/firmware/iscsi_ibft.c')
-rw-r--r--drivers/firmware/iscsi_ibft.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/firmware/iscsi_ibft.c b/drivers/firmware/iscsi_ibft.c
index 72791232e46b..81037e5fe301 100644
--- a/drivers/firmware/iscsi_ibft.c
+++ b/drivers/firmware/iscsi_ibft.c
@@ -319,6 +319,9 @@ static ssize_t ibft_attr_show_nic(void *data, int type, char *buf)
val = cpu_to_be32(~((1 << (32-nic->subnet_mask_prefix))-1));
str += sprintf(str, "%pI4", &val);
break;
+ case ISCSI_BOOT_ETH_PREFIX_LEN:
+ str += sprintf(str, "%d\n", nic->subnet_mask_prefix);
+ break;
case ISCSI_BOOT_ETH_ORIGIN:
str += sprintf(str, "%d\n", nic->origin);
break;
@@ -460,6 +463,7 @@ static umode_t ibft_check_nic_for(void *data, int type)
if (address_not_null(nic->ip_addr))
rc = S_IRUGO;
break;
+ case ISCSI_BOOT_ETH_PREFIX_LEN:
case ISCSI_BOOT_ETH_SUBNET_MASK:
if (nic->subnet_mask_prefix)
rc = S_IRUGO;