diff options
| -rw-r--r-- | include/net/genetlink.h | 4 | ||||
| -rw-r--r-- | net/netlink/genetlink.c | 18 |
2 files changed, 17 insertions, 5 deletions
diff --git a/include/net/genetlink.h b/include/net/genetlink.h index 8ea1fc1ed1c7..cb35625d001e 100644 --- a/include/net/genetlink.h +++ b/include/net/genetlink.h @@ -137,6 +137,8 @@ struct genl_small_ops { * @cmd: command identifier * @internal_flags: flags used by the family * @flags: flags + * @maxattr: maximum number of attributes supported + * @policy: netlink policy (takes precedence over family policy) * @doit: standard command callback * @start: start callback for dumps * @dumpit: callback for dumpers @@ -149,6 +151,8 @@ struct genl_ops { int (*dumpit)(struct sk_buff *skb, struct netlink_callback *cb); int (*done)(struct netlink_callback *cb); + const struct nla_policy *policy; + unsigned int maxattr; u8 cmd; u8 internal_flags; u8 flags; diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c index 286a3b3f928e..c3673d84d8b5 100644 --- a/net/netlink/genetlink.c +++ b/net/netlink/genetlink.c @@ -116,6 +116,11 @@ static void genl_op_from_full(const struct genl_family *family, unsigned int i, struct genl_ops *op) { *op = family->ops[i]; + + if (!op->maxattr) + op->maxattr = family->maxattr; + if (!op->policy) + op->policy = family->policy; } static int genl_get_cmd_full(u8 cmd, const struct genl_family *family, @@ -142,6 +147,9 @@ static void genl_op_from_small(const struct genl_family *family, op->internal_flags = family->small_ops[i].internal_flags; op->flags = family->small_ops[i].flags; op->validate = family->small_ops[i].validate; + + op->maxattr = family->maxattr; + op->policy = family->policy; } static int genl_get_cmd_small(u8 cmd, const struct genl_family *family, @@ -529,16 +537,16 @@ genl_family_rcv_msg_attrs_parse(const struct genl_family *family, struct nlattr **attrbuf; int err; - if (!family->maxattr) + if (!ops->maxattr) return NULL; - attrbuf = kmalloc_array(family->maxattr + 1, + attrbuf = kmalloc_array(ops->maxattr + 1, sizeof(struct nlattr *), GFP_KERNEL); if (!attrbuf) return ERR_PTR(-ENOMEM); - err = __nlmsg_parse(nlh, hdrlen, attrbuf, family->maxattr, - family->policy, validate, extack); + err = __nlmsg_parse(nlh, hdrlen, attrbuf, ops->maxattr, ops->policy, + validate, extack); if (err) { kfree(attrbuf); return ERR_PTR(err); @@ -845,7 +853,7 @@ static int ctrl_fill_info(const struct genl_family *family, u32 portid, u32 seq, op_flags |= GENL_CMD_CAP_DUMP; if (op.doit) op_flags |= GENL_CMD_CAP_DO; - if (family->policy) + if (op.policy) op_flags |= GENL_CMD_CAP_HASPOL; nest = nla_nest_start_noflag(skb, i + 1); |