From: Eric Dumazet
Date: Wed, 02 Nov 2016 07:53:17 -0700
> From: Eric Dumazet
>
> Imagine initial value of max_skb_frags is 17, and last
> skb in write queue has 15 frags.
>
> Then max_skb_frags is lowered to 14 or smaller value.
>
> tcp_sendmsg() will then be allowed to add additional page f
From: Eric Dumazet
Imagine initial value of max_skb_frags is 17, and last
skb in write queue has 15 frags.
Then max_skb_frags is lowered to 14 or smaller value.
tcp_sendmsg() will then be allowed to add additional page frags
and eventually go past MAX_SKB_FRAGS, overflowing struct
skb_shared_in
