From 5a146b97d5e93db2df075c0d820f492bb996d0e3 Mon Sep 17 00:00:00 2001 From: Gerrit Renker Date: Thu, 4 Sep 2008 07:30:19 +0200 Subject: dccp: Process incoming Change feature-negotiation options This adds/replaces code for processing incoming ChangeL/R options. The main difference is that: * mandatory FN options are now interpreted inside the function (there are too many individual cases to do this externally); * the function returns an appropriate Reset code or 0, which is then used to fill in the data for the Reset packet. Old code, which is no longer used or referenced, has been removed. Signed-off-by: Gerrit Renker --- net/dccp/options.c | 23 ++++++++--------------- 1 file changed, 8 insertions(+), 15 deletions(-) (limited to 'net/dccp/options.c') diff --git a/net/dccp/options.c b/net/dccp/options.c index 0e277114cb23..fb8466ea467a 100644 --- a/net/dccp/options.c +++ b/net/dccp/options.c @@ -135,22 +135,13 @@ int dccp_parse_options(struct sock *sk, struct dccp_request_sock *dreq, (unsigned long long)opt_recv->dccpor_ndp); break; case DCCPO_CHANGE_L: - /* fall through */ case DCCPO_CHANGE_R: if (pkt_type == DCCP_PKT_DATA) break; - if (len < 2) - goto out_invalid_option; - rc = dccp_feat_change_recv(sk, opt, *value, value + 1, - len - 1); - /* - * When there is a change error, change_recv is - * responsible for dealing with it. i.e. reply with an - * empty confirm. - * If the change was mandatory, then we need to die. - */ - if (rc && mandatory) - goto out_invalid_option; + rc = dccp_feat_parse_options(sk, dreq, mandatory, opt, + *value, value + 1, len - 1); + if (rc) + goto out_featneg_failed; break; case DCCPO_CONFIRM_L: /* fall through */ @@ -292,8 +283,10 @@ out_nonsensical_length: out_invalid_option: DCCP_INC_STATS_BH(DCCP_MIB_INVALIDOPT); - DCCP_SKB_CB(skb)->dccpd_reset_code = DCCP_RESET_CODE_OPTION_ERROR; - DCCP_WARN("DCCP(%p): invalid option %d, len=%d", sk, opt, len); + rc = DCCP_RESET_CODE_OPTION_ERROR; +out_featneg_failed: + DCCP_WARN("DCCP(%p): Option %d (len=%d) error=%u\n", sk, opt, len, rc); + DCCP_SKB_CB(skb)->dccpd_reset_code = rc; DCCP_SKB_CB(skb)->dccpd_reset_data[0] = opt; DCCP_SKB_CB(skb)->dccpd_reset_data[1] = len > 0 ? value[0] : 0; DCCP_SKB_CB(skb)->dccpd_reset_data[2] = len > 1 ? value[1] : 0; -- cgit v1.2.3-59-g8ed1b