diff options
Diffstat (limited to 'target/linux/generic/patches-3.8/604-netfilter_conntrack_flush.patch')
| -rw-r--r-- | target/linux/generic/patches-3.8/604-netfilter_conntrack_flush.patch | 57 |
1 files changed, 47 insertions, 10 deletions
diff --git a/target/linux/generic/patches-3.8/604-netfilter_conntrack_flush.patch b/target/linux/generic/patches-3.8/604-netfilter_conntrack_flush.patch index 3ee5e49829..3f510a9ad2 100644 --- a/target/linux/generic/patches-3.8/604-netfilter_conntrack_flush.patch +++ b/target/linux/generic/patches-3.8/604-netfilter_conntrack_flush.patch @@ -1,12 +1,35 @@ --- a/net/netfilter/nf_conntrack_standalone.c +++ b/net/netfilter/nf_conntrack_standalone.c -@@ -267,10 +267,34 @@ static int ct_open(struct inode *inode, +@@ -16,6 +16,7 @@ + #include <linux/percpu.h> + #include <linux/netdevice.h> + #include <linux/security.h> ++#include <linux/inet.h> + #include <net/net_namespace.h> + #ifdef CONFIG_SYSCTL + #include <linux/sysctl.h> +@@ -267,10 +268,63 @@ static int ct_open(struct inode *inode, sizeof(struct ct_iter_state)); } -+static int kill_all(struct nf_conn *i, void *data) ++struct kill_request { ++ u16 family; ++ union nf_inet_addr addr; ++}; ++ ++static int kill_matching(struct nf_conn *i, void *data) +{ -+ return 1; ++ struct kill_request *kr = data; ++ struct nf_conntrack_tuple *t = &i->tuplehash[IP_CT_DIR_ORIGINAL].tuple; ++ ++ if (!kr->family) ++ return 1; ++ ++ if (t->src.l3num != kr->family) ++ return 0; ++ ++ return (nf_inet_addr_cmp(&kr->addr, &t->src.u3) || ++ nf_inet_addr_cmp(&kr->addr, &t->dst.u3)); +} + +static ssize_t ct_file_write(struct file *file, const char __user *buf, @@ -14,16 +37,30 @@ +{ + struct seq_file *seq = file->private_data; + struct net *net = seq_file_net(seq); ++ struct kill_request kr = { }; ++ char req[INET6_ADDRSTRLEN] = { }; + -+ if (count) { -+ char c; ++ if (count == 0) ++ return 0; + -+ if (get_user(c, buf)) -+ return -EFAULT; ++ if (count >= INET6_ADDRSTRLEN) ++ count = INET6_ADDRSTRLEN - 1; + -+ if (c == 'f') -+ nf_ct_iterate_cleanup(net, kill_all, NULL); ++ if (copy_from_user(req, buf, count)) ++ return -EFAULT; ++ ++ if (strnchr(req, count, ':')) { ++ kr.family = AF_INET6; ++ if (!in6_pton(req, count, (void *)&kr.addr, '\n', NULL)) ++ return -EINVAL; ++ } else if (strnchr(req, count, '.')) { ++ kr.family = AF_INET; ++ if (!in4_pton(req, count, (void *)&kr.addr, '\n', NULL)) ++ return -EINVAL; + } ++ ++ nf_ct_iterate_cleanup(net, kill_matching, &kr); ++ + return count; +} + @@ -35,7 +72,7 @@ .llseek = seq_lseek, .release = seq_release_net, }; -@@ -372,7 +396,7 @@ static int nf_conntrack_standalone_init_ +@@ -372,7 +426,7 @@ static int nf_conntrack_standalone_init_ { struct proc_dir_entry *pde; |