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[DCCP]: Simplified conditions due to use of enum:8 states

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This reaps the benefit of the earlier patch, which changed the type of
CCID 3 states to use enums, in that many conditions are now simplified
and the number of possible (unexpected) values is greatly reduced.

In a few instances, this also allowed to simplify pre-conditions; where
care has been taken to retain logical equivalence.

[DCCP]: Introduce a consistent BUG/WARN message scheme

This refines the existing set of DCCP messages so that
 * BUG(), BUG_ON(), WARN_ON() have meaningful DCCP-specific counterparts
 * DCCP_CRIT (for severe warnings) is not rate-limited
 * DCCP_WARN() is introduced as rate-limited wrapper

Using these allows a faster and cleaner transition to their original
counterparts once the code has matured into a full DCCP implementation.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
This commit is contained in:
Gerrit Renker
2006-11-20 18:39:23 -02:00
committed by David S. Miller
parent b1308dc015
commit 59348b19ef
14 changed files with 115 additions and 156 deletions
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11
net/dccp/feat.c
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@@ -25,11 +25,11 @@ int dccp_feat_change(struct dccp_minisock *dmsk, u8 type, u8 feature,
dccp_feat_debug(type, feature, *val);
if (!dccp_feat_is_valid_type(type)) {
pr_info("option type %d invalid in negotiation\n", type);
DCCP_WARN("option type %d invalid in negotiation\n", type);
return 1;
}
if (!dccp_feat_is_valid_length(type, feature, len)) {
pr_info("invalid length %d\n", len);
DCCP_WARN("invalid length %d\n", len);
return 1;
}
/* XXX add further sanity checks */
@@ -169,7 +169,8 @@ static int dccp_feat_reconcile(struct sock *sk, struct dccp_opt_pend *opt,
break;
default:
WARN_ON(1); /* XXX implement res */
DCCP_BUG("Fell through, feat=%d", opt->dccpop_feat);
/* XXX implement res */
return -EFAULT;
}
@@ -328,7 +329,7 @@ static void dccp_feat_empty_confirm(struct dccp_minisock *dmsk,
switch (type) {
case DCCPO_CHANGE_L: opt->dccpop_type = DCCPO_CONFIRM_R; break;
case DCCPO_CHANGE_R: opt->dccpop_type = DCCPO_CONFIRM_L; break;
default: pr_info("invalid type %d\n", type); return;
default: DCCP_WARN("invalid type %d\n", type); return;
}
opt->dccpop_feat = feature;
@@ -426,7 +427,7 @@ int dccp_feat_confirm_recv(struct sock *sk, u8 type, u8 feature,
switch (type) {
case DCCPO_CONFIRM_L: t = DCCPO_CHANGE_R; break;
case DCCPO_CONFIRM_R: t = DCCPO_CHANGE_L; break;
default: pr_info("invalid type %d\n", type);
default: DCCP_WARN("invalid type %d\n", type);
return 1;
}