diff options
author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2007-04-19 20:29:13 -0700 |
---|---|---|
committer | David S. Miller <davem@sunset.davemloft.net> | 2007-04-25 22:26:28 -0700 |
commit | 27a884dc3cb63b93c2b3b643f5b31eed5f8a4d26 (patch) | |
tree | 5a267e40f9b94014be38dad5de0a52b6628834e0 /net/netfilter/nfnetlink_log.c | |
parent | be8bd86321fa7f06359d866ef61fb4d2f3e9dce9 (diff) | |
download | kernel_samsung_smdk4412-27a884dc3cb63b93c2b3b643f5b31eed5f8a4d26.zip kernel_samsung_smdk4412-27a884dc3cb63b93c2b3b643f5b31eed5f8a4d26.tar.gz kernel_samsung_smdk4412-27a884dc3cb63b93c2b3b643f5b31eed5f8a4d26.tar.bz2 |
[SK_BUFF]: Convert skb->tail to sk_buff_data_t
So that it is also an offset from skb->head, reduces its size from 8 to 4 bytes
on 64bit architectures, allowing us to combine the 4 bytes hole left by the
layer headers conversion, reducing struct sk_buff size to 256 bytes, i.e. 4
64byte cachelines, and since the sk_buff slab cache is SLAB_HWCACHE_ALIGN...
:-)
Many calculations that previously required that skb->{transport,network,
mac}_header be first converted to a pointer now can be done directly, being
meaningful as offsets or pointers.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netfilter/nfnetlink_log.c')
-rw-r--r-- | net/netfilter/nfnetlink_log.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c index 5eeebd2..9709f94 100644 --- a/net/netfilter/nfnetlink_log.c +++ b/net/netfilter/nfnetlink_log.c @@ -409,15 +409,14 @@ __build_packet_message(struct nfulnl_instance *inst, const struct nf_loginfo *li, const char *prefix, unsigned int plen) { - unsigned char *old_tail; struct nfulnl_msg_packet_hdr pmsg; struct nlmsghdr *nlh; struct nfgenmsg *nfmsg; __be32 tmp_uint; + sk_buff_data_t old_tail = inst->skb->tail; UDEBUG("entered\n"); - old_tail = inst->skb->tail; nlh = NLMSG_PUT(inst->skb, 0, 0, NFNL_SUBSYS_ULOG << 8 | NFULNL_MSG_PACKET, sizeof(struct nfgenmsg)); |