diff options
| -rw-r--r-- | net/netlink/genetlink.c | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c index 89646b97300c..5e33c7938470 100644 --- a/net/netlink/genetlink.c +++ b/net/netlink/genetlink.c @@ -1154,6 +1154,24 @@ static int ctrl_dumppolicy_start(struct netlink_callback *cb) rt->maxattr); } +static void *ctrl_dumppolicy_prep(struct sk_buff *skb, + struct netlink_callback *cb) +{ + struct ctrl_dump_policy_ctx *ctx = (void *)cb->ctx; + void *hdr; + + hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, + cb->nlh->nlmsg_seq, &genl_ctrl, + NLM_F_MULTI, CTRL_CMD_GETPOLICY); + if (!hdr) + return NULL; + + if (nla_put_u16(skb, CTRL_ATTR_FAMILY_ID, ctx->fam_id)) + return NULL; + + return hdr; +} + static int ctrl_dumppolicy(struct sk_buff *skb, struct netlink_callback *cb) { struct ctrl_dump_policy_ctx *ctx = (void *)cb->ctx; @@ -1162,15 +1180,10 @@ static int ctrl_dumppolicy(struct sk_buff *skb, struct netlink_callback *cb) void *hdr; struct nlattr *nest; - hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, - cb->nlh->nlmsg_seq, &genl_ctrl, - NLM_F_MULTI, CTRL_CMD_GETPOLICY); + hdr = ctrl_dumppolicy_prep(skb, cb); if (!hdr) goto nla_put_failure; - if (nla_put_u16(skb, CTRL_ATTR_FAMILY_ID, ctx->fam_id)) - goto nla_put_failure; - nest = nla_nest_start(skb, CTRL_ATTR_POLICY); if (!nest) goto nla_put_failure; |