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| author | Paul Mundt <lethal@linux-sh.org> | 2011-03-17 08:44:08 +0100 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2011-03-17 08:44:08 +0100 |
| commit | 1d2a1959fe534279cf37aba20b08c24c20840e52 (patch) | |
| tree | 67c0b9aa7fe22a44bf0b4af88947799203eb8f67 /net/batman-adv/unicast.h | |
| parent | sh: update sh7757lcr_defconfig (diff) | |
| parent | Merge branch 'mnt_devname' of git://git.kernel.org/pub/scm/linux/kernel/git/v... (diff) | |
| download | linux-1d2a1959fe534279cf37aba20b08c24c20840e52.tar.xz linux-1d2a1959fe534279cf37aba20b08c24c20840e52.zip | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into sh-latest
Diffstat (limited to 'net/batman-adv/unicast.h')
| -rw-r--r-- | net/batman-adv/unicast.h | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/net/batman-adv/unicast.h b/net/batman-adv/unicast.h index e32b7867a9a4..16ad7a9242b5 100644 --- a/net/batman-adv/unicast.h +++ b/net/batman-adv/unicast.h @@ -1,5 +1,5 @@ /* - * Copyright (C) 2010 B.A.T.M.A.N. contributors: + * Copyright (C) 2010-2011 B.A.T.M.A.N. contributors: * * Andreas Langer * @@ -22,6 +22,8 @@ #ifndef _NET_BATMAN_ADV_UNICAST_H_ #define _NET_BATMAN_ADV_UNICAST_H_ +#include "packet.h" + #define FRAG_TIMEOUT 10000 /* purge frag list entrys after time in ms */ #define FRAG_BUFFER_SIZE 6 /* number of list elements in buffer */ @@ -30,6 +32,27 @@ int frag_reassemble_skb(struct sk_buff *skb, struct bat_priv *bat_priv, void frag_list_free(struct list_head *head); int unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv); int frag_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv, - struct batman_if *batman_if, uint8_t dstaddr[]); + struct hard_iface *hard_iface, uint8_t dstaddr[]); + +static inline int frag_can_reassemble(struct sk_buff *skb, int mtu) +{ + struct unicast_frag_packet *unicast_packet; + int uneven_correction = 0; + unsigned int merged_size; + + unicast_packet = (struct unicast_frag_packet *)skb->data; + + if (unicast_packet->flags & UNI_FRAG_LARGETAIL) { + if (unicast_packet->flags & UNI_FRAG_HEAD) + uneven_correction = 1; + else + uneven_correction = -1; + } + + merged_size = (skb->len - sizeof(struct unicast_frag_packet)) * 2; + merged_size += sizeof(struct unicast_packet) + uneven_correction; + + return merged_size <= mtu; +} #endif /* _NET_BATMAN_ADV_UNICAST_H_ */ |