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ethtool: wire up get policies to ops

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Wire up policies for get commands in struct nla_policy of the ethtool
family. Make use of genetlink code attr validation and parsing, as well
as allow dumping policies to user space.

For every ETHTOOL_MSG_*_GET:
 - add 'ethnl_' prefix to policy name
 - add extern declaration in net/ethtool/netlink.h
 - wire up the policy & attr in ethtool_genl_ops[].
 - remove .request_policy and .max_attr from ethnl_request_ops.

Obviously core only records the first "layer" of parsed attrs
so we still need to parse the sub-attrs of the nested header
attribute.

v2:
 - merge of patches 1 and 2 from v1
 - remove stray empty lines in ops
 - also remove .max_attr

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski 2020-10-05 15:07:33 -07:00 • committed by David S. Miller
parent 02da0b615b
commit 4f30974feb
17 changed files with 90 additions and 107 deletions
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5
net/ethtool/debug.c
View file

@ -16,8 +16,7 @@ struct debug_reply_data {
#define DEBUG_REPDATA(__reply_base) \
container_of(__reply_base, struct debug_reply_data, base)
static const struct nla_policy
debug_get_policy[ETHTOOL_A_DEBUG_MAX + 1] = {
const struct nla_policy ethnl_debug_get_policy[ETHTOOL_A_DEBUG_MAX + 1] = {
[ETHTOOL_A_DEBUG_UNSPEC] = { .type = NLA_REJECT },
[ETHTOOL_A_DEBUG_HEADER] = { .type = NLA_NESTED },
[ETHTOOL_A_DEBUG_MSGMASK] = { .type = NLA_REJECT },
@ -69,10 +68,8 @@ const struct ethnl_request_ops ethnl_debug_request_ops = {
.request_cmd = ETHTOOL_MSG_DEBUG_GET,
.reply_cmd = ETHTOOL_MSG_DEBUG_GET_REPLY,
.hdr_attr = ETHTOOL_A_DEBUG_HEADER,
.max_attr = ETHTOOL_A_DEBUG_MAX,
.req_info_size = sizeof(struct debug_req_info),
.reply_data_size = sizeof(struct debug_reply_data),
.request_policy = debug_get_policy,
.prepare_data = debug_prepare_data,
.reply_size = debug_reply_size,