From be991971d53e0f5b6d13e3940192054216590072 Mon Sep 17 00:00:00 2001 From: Hannes Frederic Sowa Date: Fri, 22 Mar 2013 08:24:37 +0000 Subject: inet: generalize ipv4-only RFC3168 5.3 ecn fragmentation handling for future use by ipv6 This patch just moves some code arround to make the ip4_frag_ecn_table and IPFRAG_ECN_* constants accessible from the other reassembly engines. I also renamed ip4_frag_ecn_table to ip_frag_ecn_table. Cc: Eric Dumazet Cc: Jesper Dangaard Brouer Cc: YOSHIFUJI Hideaki Signed-off-by: Hannes Frederic Sowa Acked-by: YOSHIFUJI Hideaki Signed-off-by: David S. Miller --- include/net/inet_frag.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/net/inet_frag.h') diff --git a/include/net/inet_frag.h b/include/net/inet_frag.h index 0a1dcc2fa2f5..64b4e7d23b8a 100644 --- a/include/net/inet_frag.h +++ b/include/net/inet_frag.h @@ -153,4 +153,16 @@ static inline void inet_frag_lru_add(struct netns_frags *nf, list_add_tail(&q->lru_list, &nf->lru_list); spin_unlock(&nf->lru_lock); } + +/* RFC 3168 support : + * We want to check ECN values of all fragments, do detect invalid combinations. + * In ipq->ecn, we store the OR value of each ip4_frag_ecn() fragment value. + */ +#define IPFRAG_ECN_NOT_ECT 0x01 /* one frag had ECN_NOT_ECT */ +#define IPFRAG_ECN_ECT_1 0x02 /* one frag had ECN_ECT_1 */ +#define IPFRAG_ECN_ECT_0 0x04 /* one frag had ECN_ECT_0 */ +#define IPFRAG_ECN_CE 0x08 /* one frag had ECN_CE */ + +extern const u8 ip_frag_ecn_table[16]; + #endif -- cgit v1.2.3