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vxlan: Use nlmsg_payload in vxlan_vnifilter_dump

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Leverage the new nlmsg_payload() helper to avoid checking for message
size and then reading the nlmsg data.

Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://patch.msgid.link/20250415-nlmsg_v2-v1-8-a1c75d493fd7@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Breno Leitao 2025-04-15 12:28:59 -07:00 committed by Jakub Kicinski
parent 04e00a849e
commit 9b1097a410
1 changed files with 2 additions and 3 deletions
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5
drivers/net/vxlan/vxlan_vnifilter.c
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@ -411,13 +411,12 @@ static int vxlan_vnifilter_dump(struct sk_buff *skb, struct netlink_callback *cb
struct tunnel_msg *tmsg;
struct net_device *dev;
if (cb->nlh->nlmsg_len < nlmsg_msg_size(sizeof(struct tunnel_msg))) {
tmsg = nlmsg_payload(cb->nlh, sizeof(*tmsg));
if (!tmsg) {
NL_SET_ERR_MSG(cb->extack, "Invalid msg length");
return -EINVAL;
}
tmsg = nlmsg_data(cb->nlh);
if (tmsg->flags & ~TUNNEL_MSG_VALID_USER_FLAGS) {
NL_SET_ERR_MSG(cb->extack, "Invalid tunnelmsg flags in ancillary header");
return -EINVAL;