[PATCH net-next 4/4] net: shaper: add a note that we expect cap dumps to be tiny

[Jakub Kicinski <kuba@kernel.org>]

Various AI scan tools may complain that we don't support resuming
the cap dump. This is true, but the cap dumps are tiny.
net_shaper_nl_cap_pre_dumpit() sets up the dump for just
one device, so the size of the dump scales with NET_SHAPER_SCOPE_MAX (3).

We don't expect them to ever need more than a 4kB page.
Document this.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
 net/shaper/shaper.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/shaper/shaper.c b/net/shaper/shaper.c
index 5a3b44c5d10f..b65b356da16b 100644
--- a/net/shaper/shaper.c
+++ b/net/shaper/shaper.c
@@ -1452,6 +1452,8 @@ int net_shaper_nl_cap_get_dumpit(struct sk_buff *skb,
 
 		ret = net_shaper_cap_fill_one(skb, binding, scope, flags,
 					      info);
+		/* cap dumps are tiny, we expect them to fit in a single skb */
+		WARN_ON_ONCE(ret == -EMSGSIZE);
 		if (ret)
 			return ret;
 	}
-- 
2.54.0