net: constify skbuff and Qdisc elements

Preliminary patch before tcp constification

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 12 insertions, 12 deletions

diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index 4fc88f3ccd5f..2eb207ea4eaf 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -46,14 +46,14 @@ struct qdisc_size_table {
 struct Qdisc {
         int                     (*enqueue)(struct sk_buff *skb, struct Qdisc *dev);
         struct sk_buff *        (*dequeue)(struct Qdisc *dev);
-        unsigned                flags;
+        unsigned int            flags;
 #define TCQ_F_BUILTIN           1
 #define TCQ_F_INGRESS           2
 #define TCQ_F_CAN_BYPASS        4
 #define TCQ_F_MQROOT            8
 #define TCQ_F_WARN_NONWC        (1 << 16)
         int                     padded;
-        struct Qdisc_ops        *ops;
+        const struct Qdisc_ops  *ops;
         struct qdisc_size_table __rcu *stab;
         struct list_head        list;
         u32                     handle;
@@ -224,7 +224,7 @@ struct qdisc_skb_cb {
         long                    data[];
 };
 
-static inline int qdisc_qlen(struct Qdisc *q)
+static inline int qdisc_qlen(const struct Qdisc *q)
 {
         return q->q.qlen;
 }
@@ -239,12 +239,12 @@ static inline spinlock_t *qdisc_lock(struct Qdisc *qdisc)
         return &qdisc->q.lock;
 }
 
-static inline struct Qdisc *qdisc_root(struct Qdisc *qdisc)
+static inline struct Qdisc *qdisc_root(const struct Qdisc *qdisc)
 {
         return qdisc->dev_queue->qdisc;
 }
 
-static inline struct Qdisc *qdisc_root_sleeping(struct Qdisc *qdisc)
+static inline struct Qdisc *qdisc_root_sleeping(const struct Qdisc *qdisc)
 {
         return qdisc->dev_queue->qdisc_sleeping;
 }
@@ -260,7 +260,7 @@ static inline struct Qdisc *qdisc_root_sleeping(struct Qdisc *qdisc)
  * root.  This is enforced by holding the RTNL semaphore, which
  * all users of this lock accessor must do.
  */
-static inline spinlock_t *qdisc_root_lock(struct Qdisc *qdisc)
+static inline spinlock_t *qdisc_root_lock(const struct Qdisc *qdisc)
 {
         struct Qdisc *root = qdisc_root(qdisc);
 
@@ -268,7 +268,7 @@ static inline spinlock_t *qdisc_root_lock(struct Qdisc *qdisc)
         return qdisc_lock(root);
 }
 
-static inline spinlock_t *qdisc_root_sleeping_lock(struct Qdisc *qdisc)
+static inline spinlock_t *qdisc_root_sleeping_lock(const struct Qdisc *qdisc)
 {
         struct Qdisc *root = qdisc_root_sleeping(qdisc);
 
@@ -276,17 +276,17 @@ static inline spinlock_t *qdisc_root_sleeping_lock(struct Qdisc *qdisc)
         return qdisc_lock(root);
 }
 
-static inline struct net_device *qdisc_dev(struct Qdisc *qdisc)
+static inline struct net_device *qdisc_dev(const struct Qdisc *qdisc)
 {
         return qdisc->dev_queue->dev;
 }
 
-static inline void sch_tree_lock(struct Qdisc *q)
+static inline void sch_tree_lock(const struct Qdisc *q)
 {
         spin_lock_bh(qdisc_root_sleeping_lock(q));
 }
 
-static inline void sch_tree_unlock(struct Qdisc *q)
+static inline void sch_tree_unlock(const struct Qdisc *q)
 {
         spin_unlock_bh(qdisc_root_sleeping_lock(q));
 }
@@ -319,7 +319,7 @@ static inline unsigned int qdisc_class_hash(u32 id, u32 mask)
 }
 
 static inline struct Qdisc_class_common *
-qdisc_class_find(struct Qdisc_class_hash *hash, u32 id)
+qdisc_class_find(const struct Qdisc_class_hash *hash, u32 id)
 {
         struct Qdisc_class_common *cl;
         struct hlist_node *n;
@@ -393,7 +393,7 @@ static inline bool qdisc_all_tx_empty(const struct net_device *dev)
 }
 
 /* Are any of the TX qdiscs changing?  */
-static inline bool qdisc_tx_changing(struct net_device *dev)
+static inline bool qdisc_tx_changing(const struct net_device *dev)
 {
         unsigned int i;
         for (i = 0; i < dev->num_tx_queues; i++) {