nfsd4.1: common slot allocation size calculation

[safe/jmp/linux-2.6] / net / dccp / dccp.h

diff --git a/net/dccp/dccp.h b/net/dccp/dccp.h
index d6fed59..5ef32c2 100644 (file)
--- a/net/dccp/dccp.h
+++ b/net/dccp/dccp.h
@@ -42,14 +42,16 @@
 extern int dccp_debug;
 #define dccp_pr_debug(format, a...)      DCCP_PR_DEBUG(dccp_debug, format, ##a)
 #define dccp_pr_debug_cat(format, a...)   DCCP_PRINTK(dccp_debug, format, ##a)
+#define dccp_debug(fmt, a...)            dccp_pr_debug_cat(KERN_DEBUG fmt, ##a)
 #else
 #define dccp_pr_debug(format, a...)
 #define dccp_pr_debug_cat(format, a...)
+#define dccp_debug(format, a...)
 #endif
 
 extern struct inet_hashinfo dccp_hashinfo;
 
-extern atomic_t dccp_orphan_count;
+extern struct percpu_counter dccp_orphan_count;
 
 extern void dccp_time_wait(struct sock *sk, int state, int timeo);
 
@@ -61,11 +63,14 @@ extern void dccp_time_wait(struct sock *sk, int state, int timeo);
  *    - DCCP-Reset    with ACK Subheader and 4 bytes of Reset Code fields
  *  Hence a safe upper bound for the maximum option length is 1020-28 = 992
  */
-#define MAX_DCCP_SPECIFIC_HEADER (255 * sizeof(int))
+#define MAX_DCCP_SPECIFIC_HEADER (255 * sizeof(uint32_t))
 #define DCCP_MAX_PACKET_HDR 28
 #define DCCP_MAX_OPT_LEN (MAX_DCCP_SPECIFIC_HEADER - DCCP_MAX_PACKET_HDR)
 #define MAX_DCCP_HEADER (MAX_DCCP_SPECIFIC_HEADER + MAX_HEADER)
 
+/* Upper bound for initial feature-negotiation overhead (padded to 32 bits) */
+#define DCCP_FEATNEG_OVERHEAD   (32 * sizeof(uint32_t))
+
 #define DCCP_TIMEWAIT_LEN (60 * HZ) /* how long to wait to destroy TIME-WAIT
                                     * state, about 60 seconds */
 
@@ -95,12 +100,6 @@ extern void dccp_time_wait(struct sock *sk, int state, int timeo);
 extern int  sysctl_dccp_request_retries;
 extern int  sysctl_dccp_retries1;
 extern int  sysctl_dccp_retries2;
-extern int  sysctl_dccp_feat_sequence_window;
-extern int  sysctl_dccp_feat_rx_ccid;
-extern int  sysctl_dccp_feat_tx_ccid;
-extern int  sysctl_dccp_feat_ack_ratio;
-extern int  sysctl_dccp_feat_send_ack_vector;
-extern int  sysctl_dccp_feat_send_ndp_count;
 extern int  sysctl_dccp_tx_qlen;
 extern int  sysctl_dccp_sync_ratelimit;
 
@@ -252,7 +251,8 @@ extern const char *dccp_state_name(const int state);
 extern void dccp_set_state(struct sock *sk, const int state);
 extern void dccp_done(struct sock *sk);
 
-extern void dccp_reqsk_init(struct request_sock *req, struct sk_buff *skb);
+extern int  dccp_reqsk_init(struct request_sock *rq, struct dccp_sock const *dp,
+                           struct sk_buff const *skb);
 
 extern int dccp_v4_conn_request(struct sock *sk, struct sk_buff *skb);
 
@@ -290,14 +290,14 @@ extern int           dccp_disconnect(struct sock *sk, int flags);
 extern int        dccp_getsockopt(struct sock *sk, int level, int optname,
                                   char __user *optval, int __user *optlen);
 extern int        dccp_setsockopt(struct sock *sk, int level, int optname,
-                                  char __user *optval, int optlen);
+                                  char __user *optval, unsigned int optlen);
 #ifdef CONFIG_COMPAT
 extern int        compat_dccp_getsockopt(struct sock *sk,
                                int level, int optname,
                                char __user *optval, int __user *optlen);
 extern int        compat_dccp_setsockopt(struct sock *sk,
                                int level, int optname,
-                               char __user *optval, int optlen);
+                               char __user *optval, unsigned int optlen);
 #endif
 extern int        dccp_ioctl(struct sock *sk, int cmd, unsigned long arg);
 extern int        dccp_sendmsg(struct kiocb *iocb, struct sock *sk,
@@ -411,36 +411,37 @@ static inline void dccp_hdr_set_ack(struct dccp_hdr_ack_bits *dhack,
 static inline void dccp_update_gsr(struct sock *sk, u64 seq)
 {
        struct dccp_sock *dp = dccp_sk(sk);
-       const struct dccp_minisock *dmsk = dccp_msk(sk);
 
        dp->dccps_gsr = seq;
-       dccp_set_seqno(&dp->dccps_swl,
-                      dp->dccps_gsr + 1 - (dmsk->dccpms_sequence_window / 4));
-       dccp_set_seqno(&dp->dccps_swh,
-                      dp->dccps_gsr + (3 * dmsk->dccpms_sequence_window) / 4);
+       /* Sequence validity window depends on remote Sequence Window (7.5.1) */
+       dp->dccps_swl = SUB48(ADD48(dp->dccps_gsr, 1), dp->dccps_r_seq_win / 4);
+       dp->dccps_swh = ADD48(dp->dccps_gsr, (3 * dp->dccps_r_seq_win) / 4);
 }
 
 static inline void dccp_update_gss(struct sock *sk, u64 seq)
 {
        struct dccp_sock *dp = dccp_sk(sk);
 
-       dp->dccps_awh = dp->dccps_gss = seq;
-       dccp_set_seqno(&dp->dccps_awl,
-                      (dp->dccps_gss -
-                       dccp_msk(sk)->dccpms_sequence_window + 1));
+       dp->dccps_gss = seq;
+       /* Ack validity window depends on local Sequence Window value (7.5.1) */
+       dp->dccps_awl = SUB48(ADD48(dp->dccps_gss, 1), dp->dccps_l_seq_win);
+       dp->dccps_awh = dp->dccps_gss;
 }
 
 static inline int dccp_ack_pending(const struct sock *sk)
 {
        const struct dccp_sock *dp = dccp_sk(sk);
        return dp->dccps_timestamp_echo != 0 ||
-#ifdef CONFIG_IP_DCCP_ACKVEC
-              (dccp_msk(sk)->dccpms_send_ack_vector &&
+              (dp->dccps_hc_rx_ackvec != NULL &&
                dccp_ackvec_pending(dp->dccps_hc_rx_ackvec)) ||
-#endif
               inet_csk_ack_scheduled(sk);
 }
 
+extern int  dccp_feat_finalise_settings(struct dccp_sock *dp);
+extern int  dccp_feat_server_ccid_dependencies(struct dccp_request_sock *dreq);
+extern int  dccp_feat_insert_opts(struct dccp_sock*, struct dccp_request_sock*,
+                                 struct sk_buff *skb);
+extern int  dccp_feat_activate_values(struct sock *sk, struct list_head *fn);
 extern void dccp_feat_list_purge(struct list_head *fn_list);
 
 extern int dccp_insert_options(struct sock *sk, struct sk_buff *skb);