From 0430ee3451f4589b68f522552b1896825f2043b3 Mon Sep 17 00:00:00 2001 From: Gerrit Renker Date: Wed, 26 Sep 2007 11:27:56 -0300 Subject: [DCCP]: Add Support for Data 1 .. 3 fields of Reset packets This adds fields to support the informational Data 1..3 fields of the DCCP-Reset packets (RFC 4340, 5.6), and makes minor cosmetic changes to documentation. Code which fills in these fields follows in subsequent patches, it is primarily used for reporting option-processing and feature-negotiation errors. Signed-off-by: Gerrit Renker Signed-off-by: Arnaldo Carvalho de Melo --- net/dccp/dccp.h | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) (limited to 'net/dccp/dccp.h') diff --git a/net/dccp/dccp.h b/net/dccp/dccp.h index f62eeb374931..e28220183208 100644 --- a/net/dccp/dccp.h +++ b/net/dccp/dccp.h @@ -308,10 +308,22 @@ static inline int dccp_bad_service_code(const struct sock *sk, return !dccp_list_has_service(dp->dccps_service_list, service); } +/** + * dccp_skb_cb - DCCP per-packet control information + * @dccpd_type: one of %dccp_pkt_type (or unknown) + * @dccpd_ccval: CCVal field (5.1), see e.g. RFC 4342, 8.1 + * @dccpd_reset_code: one of %dccp_reset_codes + * @dccpd_reset_data: Data1..3 fields (depend on @dccpd_reset_code) + * @dccpd_opt_len: total length of all options (5.8) in the packet + * @dccpd_seq: sequence number + * @dccpd_ack_seq: acknowledgment number subheader field value + * This is used for transmission as well as for reception. + */ struct dccp_skb_cb { __u8 dccpd_type:4; __u8 dccpd_ccval:4; - __u8 dccpd_reset_code; + __u8 dccpd_reset_code, + dccpd_reset_data[3]; __u16 dccpd_opt_len; __u64 dccpd_seq; __u64 dccpd_ack_seq; -- cgit v1.2.2