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ipv6: add struct hop_jumbo_hdr definition

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Following patches will need to add and remove local IPv6 jumbogram
options to enable BIG TCP.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2022-05-13 11:34:00 -07:00 committed by David S. Miller
parent 9957b38b5e
commit 7c96d8ec96
1 changed files with 11 additions and 0 deletions
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11
include/net/ipv6.h
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@ -151,6 +151,17 @@ struct frag_hdr {
__be32 identification;
};
/*
* Jumbo payload option, as described in RFC 2675 2.
*/
struct hop_jumbo_hdr {
u8 nexthdr;
u8 hdrlen;
u8 tlv_type; /* IPV6_TLV_JUMBO, 0xC2 */
u8 tlv_len; /* 4 */
__be32 jumbo_payload_len;
};
#define IP6_MF 0x0001
#define IP6_OFFSET 0xFFF8