[DCCP]: Introduce DCCP_{BUG{_ON},CRIT} macros, use enum:8 for the ccid3 states

This patch tackles the following problem:
       * the ccid3_hc_{t,r}x_sock define ccid3hc{t,r}x_state as `u8', but
         in reality there can only be a few, pre-defined enum names
       * this necessitates addiditional checking for unexpected values
         which would otherwise be caught by the compiler

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>

1 files changed, 12 insertions, 33 deletions

diff --git a/net/dccp/ccids/ccid3.c b/net/dccp/ccids/ccid3.c
index cec23ad286de..2fa0c6d1fbee 100644
--- a/net/dccp/ccids/ccid3.c
+++ b/net/dccp/ccids/ccid3.c
@@ -75,14 +75,6 @@ static struct dccp_tx_hist *ccid3_tx_hist;
 static struct dccp_rx_hist *ccid3_rx_hist;
 static struct dccp_li_hist *ccid3_li_hist;
 
-/* TFRC sender states */
-enum ccid3_hc_tx_states {
-        TFRC_SSTATE_NO_SENT = 1,
-        TFRC_SSTATE_NO_FBACK,
-        TFRC_SSTATE_FBACK,
-        TFRC_SSTATE_TERM,
-};
-
 #ifdef CCID3_DEBUG
 static const char *ccid3_tx_state_name(enum ccid3_hc_tx_states state)
 {
@@ -251,9 +243,8 @@ static void ccid3_hc_tx_no_feedback_timer(unsigned long data)
                                                       hctx->ccid3hctx_x));
                 break;
         default:
-                printk(KERN_CRIT "%s: %s, sk=%p, Illegal state (%d)!\n",
-                       __FUNCTION__, dccp_role(sk), sk, hctx->ccid3hctx_state);
-                dump_stack();
+                DCCP_BUG("%s, sk=%p, Illegal state (%d)!", dccp_role(sk), sk,
+                         hctx->ccid3hctx_state);
                 goto out;
         }
 
@@ -329,9 +320,8 @@ static int ccid3_hc_tx_send_packet(struct sock *sk,
                 rc = delay > 0 ? delay : 0;
                 break;
         default:
-                printk(KERN_CRIT "%s: %s, sk=%p, Illegal state (%d)!\n",
-                       __FUNCTION__, dccp_role(sk), sk, hctx->ccid3hctx_state);
-                dump_stack();
+                DCCP_BUG("%s, sk=%p, Illegal state (%d)!", dccp_role(sk), sk,
+                         hctx->ccid3hctx_state);
                 rc = -EINVAL;
                 break;
         }
@@ -423,9 +413,8 @@ static void ccid3_hc_tx_packet_sent(struct sock *sk, int more, int len)
                 }
                 break;
         default:
-                printk(KERN_CRIT "%s: %s, sk=%p, Illegal state (%d)!\n",
-                       __FUNCTION__, dccp_role(sk), sk, hctx->ccid3hctx_state);
-                dump_stack();
+                DCCP_BUG("%s, sk=%p, Illegal state (%d)!", dccp_role(sk), sk,
+                         hctx->ccid3hctx_state);
                 break;
         }
 }
@@ -568,9 +557,8 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
                 hctx->ccid3hctx_idle = 1;   
                 break;
         default:
-                printk(KERN_CRIT "%s: %s, sk=%p, Illegal state (%d)!\n",
-                       __FUNCTION__, dccp_role(sk), sk, hctx->ccid3hctx_state);
-                dump_stack();
+                DCCP_BUG("%s, sk=%p, Illegal state (%d)!", dccp_role(sk), sk,
+                         hctx->ccid3hctx_state);
                 break;
         }
 }
@@ -688,13 +676,6 @@ static void ccid3_hc_tx_exit(struct sock *sk)
  * RX Half Connection methods
  */
 
-/* TFRC receiver states */
-enum ccid3_hc_rx_states {
-        TFRC_RSTATE_NO_DATA = 1,
-        TFRC_RSTATE_DATA,
-        TFRC_RSTATE_TERM    = 127,
-};
-
 #ifdef CCID3_DEBUG
 static const char *ccid3_rx_state_name(enum ccid3_hc_rx_states state)
 {
@@ -744,9 +725,8 @@ static void ccid3_hc_rx_send_feedback(struct sock *sk)
         }
                 break;
         default:
-                printk(KERN_CRIT "%s: %s, sk=%p, Illegal state (%d)!\n",
-                       __FUNCTION__, dccp_role(sk), sk, hcrx->ccid3hcrx_state);
-                dump_stack();
+                DCCP_BUG("%s, sk=%p, Illegal state (%d)!", dccp_role(sk), sk,
+                         hcrx->ccid3hcrx_state);
                 return;
         }
 
@@ -1088,9 +1068,8 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
                 }
                 return;
         default:
-                printk(KERN_CRIT "%s: %s, sk=%p, Illegal state (%d)!\n",
-                       __FUNCTION__, dccp_role(sk), sk, hcrx->ccid3hcrx_state);
-                dump_stack();
+                DCCP_BUG("%s, sk=%p, Illegal state (%d)!",  dccp_role(sk), sk,
+                         hcrx->ccid3hcrx_state);
                 return;
         }