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authorCoco Li <lixiaoyan@google.com>2022-05-13 21:34:04 +0300
committerDavid S. Miller <davem@davemloft.net>2022-05-16 12:18:56 +0300
commit80e425b613421911f89664663a7060216abcaed2 (patch)
tree6e31830a826091a89ce2bc08e396e9a9851f1116 /include/linux/ipv6.h
parent0fe79f28bfaf73b66b7b1562d2468f94aa03bd12 (diff)
downloadlinux-80e425b613421911f89664663a7060216abcaed2.tar.xz
ipv6: Add hop-by-hop header to jumbograms in ip6_output
Instead of simply forcing a 0 payload_len in IPv6 header, implement RFC 2675 and insert a custom extension header. Note that only TCP stack is currently potentially generating jumbograms, and that this extension header is purely local, it wont be sent on a physical link. This is needed so that packet capture (tcpdump and friends) can properly dissect these large packets. Signed-off-by: Coco Li <lixiaoyan@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: Alexander Duyck <alexanderduyck@fb.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/ipv6.h')
-rw-r--r--include/linux/ipv6.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index ec5ca392eaa3..38c8203d52cb 100644
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -145,6 +145,7 @@ struct inet6_skb_parm {
#define IP6SKB_L3SLAVE 64
#define IP6SKB_JUMBOGRAM 128
#define IP6SKB_SEG6 256
+#define IP6SKB_FAKEJUMBO 512
};
#if defined(CONFIG_NET_L3_MASTER_DEV)