From 9d8506cc2d7ea1f911c72c100193a3677f6668c3 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Thu, 21 Nov 2013 11:10:04 -0800 Subject: [PATCH] gso: handle new frag_list of frags GRO packets Recently GRO started generating packets with frag_lists of frags. This was not handled by GSO, thus leading to a crash. Thankfully these packets are of a regular form and are easy to handle. This patch handles them in two ways. For completely non-linear frag_list entries, we simply continue to iterate over the frag_list frags once we exhaust the normal frags. For frag_list entries with linear parts, we call pskb_trim on the first part of the frag_list skb, and then process the rest of the frags in the usual way. This patch also kills a chunk of dead frag_list code that has obviously never ever been run since it ends up generating a bogus GSO-segmented packet with a frag_list entry. Future work is planned to split super big packets into TSO ones. Fixes: 8a29111c7ca6 ("net: gro: allow to build full sized skb") Reported-by: Christoph Paasch Reported-by: Jerry Chu Reported-by: Sander Eikelenboom Signed-off-by: Herbert Xu Signed-off-by: Eric Dumazet Tested-by: Sander Eikelenboom Tested-by: Eric Dumazet Signed-off-by: David S. Miller --- Reading git-format-patch failed