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authorJohannes Berg <johannes.berg@intel.com>2019-03-21 22:51:02 +0100
committerDavid S. Miller <davem@davemloft.net>2019-03-22 10:38:23 -0400
commit3b0f31f2b8c9fb348e4530b88f6b64f9621f83d6 (patch)
tree8dcb4d7bede0f23070f3de8a14af775dd9ef07e1 /net/openvswitch
parent601ed4d6dc3a779a31af6376488a988abccfac37 (diff)
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genetlink: make policy common to family
Since maxattr is common, the policy can't really differ sanely, so make it common as well. The only user that did in fact manage to make a non-common policy is taskstats, which has to be really careful about it (since it's still using a common maxattr!). This is no longer supported, but we can fake it using pre_doit. This reduces the size of e.g. nl80211.o (which has lots of commands): text data bss dec hex filename 398745 14323 2240 415308 6564c net/wireless/nl80211.o (before) 397913 14331 2240 414484 65314 net/wireless/nl80211.o (after) -------------------------------- -832 +8 0 -824 Which is obviously just 8 bytes for each command, and an added 8 bytes for the new policy pointer. I'm not sure why the ops list is counted as .text though. Most of the code transformations were done using the following spatch: @ops@ identifier OPS; expression POLICY; @@ struct genl_ops OPS[] = { ..., { - .policy = POLICY, }, ... }; @@ identifier ops.OPS; expression ops.POLICY; identifier fam; expression M; @@ struct genl_family fam = { .ops = OPS, .maxattr = M, + .policy = POLICY, ... }; This also gets rid of devlink_nl_cmd_region_read_dumpit() accessing the cb->data as ops, which we want to change in a later genl patch. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/openvswitch')
-rw-r--r--net/openvswitch/conntrack.c4
-rw-r--r--net/openvswitch/datapath.c17
-rw-r--r--net/openvswitch/meter.c5
3 files changed, 6 insertions, 20 deletions
diff --git a/net/openvswitch/conntrack.c b/net/openvswitch/conntrack.c
index 1b6896896fff..51080004677e 100644
--- a/net/openvswitch/conntrack.c
+++ b/net/openvswitch/conntrack.c
@@ -2154,18 +2154,15 @@ static struct genl_ops ct_limit_genl_ops[] = {
{ .cmd = OVS_CT_LIMIT_CMD_SET,
.flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN
* privilege. */
- .policy = ct_limit_policy,
.doit = ovs_ct_limit_cmd_set,
},
{ .cmd = OVS_CT_LIMIT_CMD_DEL,
.flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN
* privilege. */
- .policy = ct_limit_policy,
.doit = ovs_ct_limit_cmd_del,
},
{ .cmd = OVS_CT_LIMIT_CMD_GET,
.flags = 0, /* OK for unprivileged users. */
- .policy = ct_limit_policy,
.doit = ovs_ct_limit_cmd_get,
},
};
@@ -2179,6 +2176,7 @@ struct genl_family dp_ct_limit_genl_family __ro_after_init = {
.name = OVS_CT_LIMIT_FAMILY,
.version = OVS_CT_LIMIT_VERSION,
.maxattr = OVS_CT_LIMIT_ATTR_MAX,
+ .policy = ct_limit_policy,
.netnsok = true,
.parallel_ops = true,
.ops = ct_limit_genl_ops,
diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
index 9dd158ab51b3..a64d3eb1f9a9 100644
--- a/net/openvswitch/datapath.c
+++ b/net/openvswitch/datapath.c
@@ -639,7 +639,6 @@ static const struct nla_policy packet_policy[OVS_PACKET_ATTR_MAX + 1] = {
static const struct genl_ops dp_packet_genl_ops[] = {
{ .cmd = OVS_PACKET_CMD_EXECUTE,
.flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */
- .policy = packet_policy,
.doit = ovs_packet_cmd_execute
}
};
@@ -649,6 +648,7 @@ static struct genl_family dp_packet_genl_family __ro_after_init = {
.name = OVS_PACKET_FAMILY,
.version = OVS_PACKET_VERSION,
.maxattr = OVS_PACKET_ATTR_MAX,
+ .policy = packet_policy,
.netnsok = true,
.parallel_ops = true,
.ops = dp_packet_genl_ops,
@@ -1424,23 +1424,19 @@ static const struct nla_policy flow_policy[OVS_FLOW_ATTR_MAX + 1] = {
static const struct genl_ops dp_flow_genl_ops[] = {
{ .cmd = OVS_FLOW_CMD_NEW,
.flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */
- .policy = flow_policy,
.doit = ovs_flow_cmd_new
},
{ .cmd = OVS_FLOW_CMD_DEL,
.flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */
- .policy = flow_policy,
.doit = ovs_flow_cmd_del
},
{ .cmd = OVS_FLOW_CMD_GET,
.flags = 0, /* OK for unprivileged users. */
- .policy = flow_policy,
.doit = ovs_flow_cmd_get,
.dumpit = ovs_flow_cmd_dump
},
{ .cmd = OVS_FLOW_CMD_SET,
.flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */
- .policy = flow_policy,
.doit = ovs_flow_cmd_set,
},
};
@@ -1450,6 +1446,7 @@ static struct genl_family dp_flow_genl_family __ro_after_init = {
.name = OVS_FLOW_FAMILY,
.version = OVS_FLOW_VERSION,
.maxattr = OVS_FLOW_ATTR_MAX,
+ .policy = flow_policy,
.netnsok = true,
.parallel_ops = true,
.ops = dp_flow_genl_ops,
@@ -1817,23 +1814,19 @@ static const struct nla_policy datapath_policy[OVS_DP_ATTR_MAX + 1] = {
static const struct genl_ops dp_datapath_genl_ops[] = {
{ .cmd = OVS_DP_CMD_NEW,
.flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */
- .policy = datapath_policy,
.doit = ovs_dp_cmd_new
},
{ .cmd = OVS_DP_CMD_DEL,
.flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */
- .policy = datapath_policy,
.doit = ovs_dp_cmd_del
},
{ .cmd = OVS_DP_CMD_GET,
.flags = 0, /* OK for unprivileged users. */
- .policy = datapath_policy,
.doit = ovs_dp_cmd_get,
.dumpit = ovs_dp_cmd_dump
},
{ .cmd = OVS_DP_CMD_SET,
.flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */
- .policy = datapath_policy,
.doit = ovs_dp_cmd_set,
},
};
@@ -1843,6 +1836,7 @@ static struct genl_family dp_datapath_genl_family __ro_after_init = {
.name = OVS_DATAPATH_FAMILY,
.version = OVS_DATAPATH_VERSION,
.maxattr = OVS_DP_ATTR_MAX,
+ .policy = datapath_policy,
.netnsok = true,
.parallel_ops = true,
.ops = dp_datapath_genl_ops,
@@ -2260,23 +2254,19 @@ static const struct nla_policy vport_policy[OVS_VPORT_ATTR_MAX + 1] = {
static const struct genl_ops dp_vport_genl_ops[] = {
{ .cmd = OVS_VPORT_CMD_NEW,
.flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */
- .policy = vport_policy,
.doit = ovs_vport_cmd_new
},
{ .cmd = OVS_VPORT_CMD_DEL,
.flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */
- .policy = vport_policy,
.doit = ovs_vport_cmd_del
},
{ .cmd = OVS_VPORT_CMD_GET,
.flags = 0, /* OK for unprivileged users. */
- .policy = vport_policy,
.doit = ovs_vport_cmd_get,
.dumpit = ovs_vport_cmd_dump
},
{ .cmd = OVS_VPORT_CMD_SET,
.flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */
- .policy = vport_policy,
.doit = ovs_vport_cmd_set,
},
};
@@ -2286,6 +2276,7 @@ struct genl_family dp_vport_genl_family __ro_after_init = {
.name = OVS_VPORT_FAMILY,
.version = OVS_VPORT_VERSION,
.maxattr = OVS_VPORT_ATTR_MAX,
+ .policy = vport_policy,
.netnsok = true,
.parallel_ops = true,
.ops = dp_vport_genl_ops,
diff --git a/net/openvswitch/meter.c b/net/openvswitch/meter.c
index 43849d752a1e..0be3d097ae01 100644
--- a/net/openvswitch/meter.c
+++ b/net/openvswitch/meter.c
@@ -527,26 +527,22 @@ bool ovs_meter_execute(struct datapath *dp, struct sk_buff *skb,
static struct genl_ops dp_meter_genl_ops[] = {
{ .cmd = OVS_METER_CMD_FEATURES,
.flags = 0, /* OK for unprivileged users. */
- .policy = meter_policy,
.doit = ovs_meter_cmd_features
},
{ .cmd = OVS_METER_CMD_SET,
.flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN
* privilege.
*/
- .policy = meter_policy,
.doit = ovs_meter_cmd_set,
},
{ .cmd = OVS_METER_CMD_GET,
.flags = 0, /* OK for unprivileged users. */
- .policy = meter_policy,
.doit = ovs_meter_cmd_get,
},
{ .cmd = OVS_METER_CMD_DEL,
.flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN
* privilege.
*/
- .policy = meter_policy,
.doit = ovs_meter_cmd_del
},
};
@@ -560,6 +556,7 @@ struct genl_family dp_meter_genl_family __ro_after_init = {
.name = OVS_METER_FAMILY,
.version = OVS_METER_VERSION,
.maxattr = OVS_METER_ATTR_MAX,
+ .policy = meter_policy,
.netnsok = true,
.parallel_ops = true,
.ops = dp_meter_genl_ops,