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authorPeter Oskolkov <posk@google.com>2019-01-22 21:02:50 +0300
committerDavid S. Miller <davem@davemloft.net>2019-01-26 08:37:11 +0300
commitc23f35d19db3b36ffb9e04b08f1d91565d15f84f (patch)
treedda4eb1a696a0aad31742ae8c1f0bc3d6ca72472 /include/net/inet_frag.h
parentccaceadc4effcb83bb5e84026b6f23c1ae3e0608 (diff)
downloadlinux-c23f35d19db3b36ffb9e04b08f1d91565d15f84f.tar.xz
net: IP defrag: encapsulate rbtree defrag code into callable functions
This is a refactoring patch: without changing runtime behavior, it moves rbtree-related code from IPv4-specific files/functions into .h/.c defrag files shared with IPv6 defragmentation code. Signed-off-by: Peter Oskolkov <posk@google.com> Cc: Eric Dumazet <edumazet@google.com> Cc: Florian Westphal <fw@strlen.de> Cc: Tom Herbert <tom@herbertland.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/inet_frag.h')
-rw-r--r--include/net/inet_frag.h16
1 files changed, 14 insertions, 2 deletions
diff --git a/include/net/inet_frag.h b/include/net/inet_frag.h
index 1662cbc0b46b..b02bf737d019 100644
--- a/include/net/inet_frag.h
+++ b/include/net/inet_frag.h
@@ -77,8 +77,8 @@ struct inet_frag_queue {
struct timer_list timer;
spinlock_t lock;
refcount_t refcnt;
- struct sk_buff *fragments; /* Used in IPv6. */
- struct rb_root rb_fragments; /* Used in IPv4. */
+ struct sk_buff *fragments; /* used in 6lopwpan IPv6. */
+ struct rb_root rb_fragments; /* Used in IPv4/IPv6. */
struct sk_buff *fragments_tail;
struct sk_buff *last_run_head;
ktime_t stamp;
@@ -153,4 +153,16 @@ static inline void add_frag_mem_limit(struct netns_frags *nf, long val)
extern const u8 ip_frag_ecn_table[16];
+/* Return values of inet_frag_queue_insert() */
+#define IPFRAG_OK 0
+#define IPFRAG_DUP 1
+#define IPFRAG_OVERLAP 2
+int inet_frag_queue_insert(struct inet_frag_queue *q, struct sk_buff *skb,
+ int offset, int end);
+void *inet_frag_reasm_prepare(struct inet_frag_queue *q, struct sk_buff *skb,
+ struct sk_buff *parent);
+void inet_frag_reasm_finish(struct inet_frag_queue *q, struct sk_buff *head,
+ void *reasm_data);
+struct sk_buff *inet_frag_pull_head(struct inet_frag_queue *q);
+
#endif