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authorGerrit Renker <gerrit@erg.abdn.ac.uk>2007-09-26 10:27:56 -0400
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 19:52:42 -0400
commit0430ee3451f4589b68f522552b1896825f2043b3 (patch)
treef96e46fa079d90a51a4fc5b912d271470b489668 /net
parent727ecc5faaf6e976fc841649821c865ebd1e822d (diff)
[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 <gerrit@erg.abdn.ac.uk> Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Diffstat (limited to 'net')
-rw-r--r--net/dccp/dccp.h14
1 files changed, 13 insertions, 1 deletions
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,
308 return !dccp_list_has_service(dp->dccps_service_list, service); 308 return !dccp_list_has_service(dp->dccps_service_list, service);
309} 309}
310 310
311/**
312 * dccp_skb_cb - DCCP per-packet control information
313 * @dccpd_type: one of %dccp_pkt_type (or unknown)
314 * @dccpd_ccval: CCVal field (5.1), see e.g. RFC 4342, 8.1
315 * @dccpd_reset_code: one of %dccp_reset_codes
316 * @dccpd_reset_data: Data1..3 fields (depend on @dccpd_reset_code)
317 * @dccpd_opt_len: total length of all options (5.8) in the packet
318 * @dccpd_seq: sequence number
319 * @dccpd_ack_seq: acknowledgment number subheader field value
320 * This is used for transmission as well as for reception.
321 */
311struct dccp_skb_cb { 322struct dccp_skb_cb {
312 __u8 dccpd_type:4; 323 __u8 dccpd_type:4;
313 __u8 dccpd_ccval:4; 324 __u8 dccpd_ccval:4;
314 __u8 dccpd_reset_code; 325 __u8 dccpd_reset_code,
326 dccpd_reset_data[3];
315 __u16 dccpd_opt_len; 327 __u16 dccpd_opt_len;
316 __u64 dccpd_seq; 328 __u64 dccpd_seq;
317 __u64 dccpd_ack_seq; 329 __u64 dccpd_ack_seq;