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| author | Peter Oskolkov <posk@google.com> | 2019-04-26 08:41:05 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-02 09:32:06 +0200 |
| commit | aaee29edc09ac67c3efe9236e43bbc225ef1c5db (patch) | |
| tree | 3a064d7428ba41a2451a180f8025c8d69e756602 /include | |
| parent | 6a063691d52984facdad2eda1bcd9811c37fe0d6 (diff) | |
| download | linux-stable-aaee29edc09ac67c3efe9236e43bbc225ef1c5db.tar.gz linux-stable-aaee29edc09ac67c3efe9236e43bbc225ef1c5db.tar.bz2 linux-stable-aaee29edc09ac67c3efe9236e43bbc225ef1c5db.zip | |
net: IP defrag: encapsulate rbtree defrag code into callable functions
[ Upstream commit c23f35d19db3b36ffb9e04b08f1d91565d15f84f ]
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/inet_frag.h | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/include/net/inet_frag.h b/include/net/inet_frag.h index a3812e9c8fee..c2c724abde57 100644 --- a/include/net/inet_frag.h +++ b/include/net/inet_frag.h @@ -76,8 +76,8 @@ struct inet_frag_queue { struct timer_list timer; spinlock_t lock; atomic_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; @@ -152,4 +152,16 @@ 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 |