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| author |   David S. Miller <davem@davemloft.net> | 2008-11-28 02:19:15 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-11-28 02:19:15 -0800 |
| commit | ed77a89c30fa03dcb234a84ddea710b3fb7b62da (patch) | |
| tree | 69f3e2c2bbf2fdd4f742e891441f01307d1d1f49 /net/netfilter/nf_conntrack_helper.c | |
| parent | decnet: compile fix for removal of byteorder wrapper (diff) | |
| parent | netfilter: fix warning in net/netfilter/nf_conntrack_ftp.c (diff) | |
| download | linux-dev-ed77a89c30fa03dcb234a84ddea710b3fb7b62da.tar.xz linux-dev-ed77a89c30fa03dcb234a84ddea710b3fb7b62da.zip | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6
Conflicts:
net/netfilter/nf_conntrack_netlink.c
Diffstat (limited to 'net/netfilter/nf_conntrack_helper.c')
| -rw-r--r-- | net/netfilter/nf_conntrack_helper.c | 32 |
1 files changed, 30 insertions, 2 deletions
diff --git a/net/netfilter/nf_conntrack_helper.c b/net/netfilter/nf_conntrack_helper.c index c39b6a994133..a51bdac9f3a0 100644 --- a/net/netfilter/nf_conntrack_helper.c +++ b/net/netfilter/nf_conntrack_helper.c @@ -45,7 +45,7 @@ static unsigned int helper_hash(const struct nf_conntrack_tuple *tuple) (__force __u16)tuple->src.u.all) % nf_ct_helper_hsize; } -struct nf_conntrack_helper * +static struct nf_conntrack_helper * __nf_ct_helper_find(const struct nf_conntrack_tuple *tuple) { struct nf_conntrack_helper *helper; @@ -63,7 +63,6 @@ __nf_ct_helper_find(const struct nf_conntrack_tuple *tuple) } return NULL; } -EXPORT_SYMBOL_GPL(__nf_ct_helper_find); struct nf_conntrack_helper * __nf_conntrack_helper_find_byname(const char *name) @@ -95,6 +94,35 @@ struct nf_conn_help *nf_ct_helper_ext_add(struct nf_conn *ct, gfp_t gfp) } EXPORT_SYMBOL_GPL(nf_ct_helper_ext_add); +int __nf_ct_try_assign_helper(struct nf_conn *ct, gfp_t flags) +{ + int ret = 0; + struct nf_conntrack_helper *helper; + struct nf_conn_help *help = nfct_help(ct); + + helper = __nf_ct_helper_find(&ct->tuplehash[IP_CT_DIR_REPLY].tuple); + if (helper == NULL) { + if (help) + rcu_assign_pointer(help->helper, NULL); + goto out; + } + + if (help == NULL) { + help = nf_ct_helper_ext_add(ct, flags); + if (help == NULL) { + ret = -ENOMEM; + goto out; + } + } else { + memset(&help->help, 0, sizeof(help->help)); + } + + rcu_assign_pointer(help->helper, helper); +out: + return ret; +} +EXPORT_SYMBOL_GPL(__nf_ct_try_assign_helper); + static inline int unhelp(struct nf_conntrack_tuple_hash *i, const struct nf_conntrack_helper *me) { |