diff options
| -rw-r--r-- | include/net/netfilter/nf_conntrack.h | 2 | ||||
| -rw-r--r-- | net/netfilter/nf_conntrack_ovs.c | 48 | ||||
| -rw-r--r-- | net/openvswitch/conntrack.c | 45 | ||||
| -rw-r--r-- | net/sched/act_ct.c | 46 |
4 files changed, 53 insertions, 88 deletions
diff --git a/include/net/netfilter/nf_conntrack.h b/include/net/netfilter/nf_conntrack.h index a6e89d7212f8..7bbab8f2b73d 100644 --- a/include/net/netfilter/nf_conntrack.h +++ b/include/net/netfilter/nf_conntrack.h @@ -363,6 +363,8 @@ static inline struct nf_conntrack_net *nf_ct_pernet(const struct net *net) } int nf_ct_skb_network_trim(struct sk_buff *skb, int family); +int nf_ct_handle_fragments(struct net *net, struct sk_buff *skb, + u16 zone, u8 family, u8 *proto, u16 *mru); #define NF_CT_STAT_INC(net, count) __this_cpu_inc((net)->ct.stat->count) #define NF_CT_STAT_INC_ATOMIC(net, count) this_cpu_inc((net)->ct.stat->count) diff --git a/net/netfilter/nf_conntrack_ovs.c b/net/netfilter/nf_conntrack_ovs.c index c60ef71d1aea..52b776bdf526 100644 --- a/net/netfilter/nf_conntrack_ovs.c +++ b/net/netfilter/nf_conntrack_ovs.c @@ -3,6 +3,8 @@ #include <net/netfilter/nf_conntrack_helper.h> #include <net/netfilter/nf_conntrack_seqadj.h> +#include <net/netfilter/ipv6/nf_defrag_ipv6.h> +#include <net/ipv6_frag.h> #include <net/ip.h> /* 'skb' should already be pulled to nh_ofs. */ @@ -128,3 +130,49 @@ int nf_ct_skb_network_trim(struct sk_buff *skb, int family) return pskb_trim_rcsum(skb, len); } EXPORT_SYMBOL_GPL(nf_ct_skb_network_trim); + +/* Returns 0 on success, -EINPROGRESS if 'skb' is stolen, or other nonzero + * value if 'skb' is freed. + */ +int nf_ct_handle_fragments(struct net *net, struct sk_buff *skb, + u16 zone, u8 family, u8 *proto, u16 *mru) +{ + int err; + + if (family == NFPROTO_IPV4) { + enum ip_defrag_users user = IP_DEFRAG_CONNTRACK_IN + zone; + + memset(IPCB(skb), 0, sizeof(struct inet_skb_parm)); + local_bh_disable(); + err = ip_defrag(net, skb, user); + local_bh_enable(); + if (err) + return err; + + *mru = IPCB(skb)->frag_max_size; +#if IS_ENABLED(CONFIG_NF_DEFRAG_IPV6) + } else if (family == NFPROTO_IPV6) { + enum ip6_defrag_users user = IP6_DEFRAG_CONNTRACK_IN + zone; + + memset(IP6CB(skb), 0, sizeof(struct inet6_skb_parm)); + err = nf_ct_frag6_gather(net, skb, user); + if (err) { + if (err != -EINPROGRESS) + kfree_skb(skb); + return err; + } + + *proto = ipv6_hdr(skb)->nexthdr; + *mru = IP6CB(skb)->frag_max_size; +#endif + } else { + kfree_skb(skb); + return -EPFNOSUPPORT; + } + + skb_clear_hash(skb); + skb->ignore_df = 1; + + return 0; +} +EXPORT_SYMBOL_GPL(nf_ct_handle_fragments); diff --git a/net/openvswitch/conntrack.c b/net/openvswitch/conntrack.c index 211e05828fe5..331730fd3580 100644 --- a/net/openvswitch/conntrack.c +++ b/net/openvswitch/conntrack.c @@ -435,56 +435,13 @@ static int ovs_ct_set_labels(struct nf_conn *ct, struct sw_flow_key *key, return 0; } -/* Returns 0 on success, -EINPROGRESS if 'skb' is stolen, or other nonzero - * value if 'skb' is freed. - */ -static int handle_fragments(struct net *net, struct sk_buff *skb, - u16 zone, u8 family, u8 *proto, u16 *mru) -{ - int err; - - if (family == NFPROTO_IPV4) { - enum ip_defrag_users user = IP_DEFRAG_CONNTRACK_IN + zone; - - memset(IPCB(skb), 0, sizeof(struct inet_skb_parm)); - err = ip_defrag(net, skb, user); - if (err) - return err; - - *mru = IPCB(skb)->frag_max_size; -#if IS_ENABLED(CONFIG_NF_DEFRAG_IPV6) - } else if (family == NFPROTO_IPV6) { - enum ip6_defrag_users user = IP6_DEFRAG_CONNTRACK_IN + zone; - - memset(IP6CB(skb), 0, sizeof(struct inet6_skb_parm)); - err = nf_ct_frag6_gather(net, skb, user); - if (err) { - if (err != -EINPROGRESS) - kfree_skb(skb); - return err; - } - - *proto = ipv6_hdr(skb)->nexthdr; - *mru = IP6CB(skb)->frag_max_size; -#endif - } else { - kfree_skb(skb); - return -EPFNOSUPPORT; - } - - skb_clear_hash(skb); - skb->ignore_df = 1; - - return 0; -} - static int ovs_ct_handle_fragments(struct net *net, struct sw_flow_key *key, u16 zone, int family, struct sk_buff *skb) { struct ovs_skb_cb ovs_cb = *OVS_CB(skb); int err; - err = handle_fragments(net, skb, zone, family, &key->ip.proto, &ovs_cb.mru); + err = nf_ct_handle_fragments(net, skb, zone, family, &key->ip.proto, &ovs_cb.mru); if (err) return err; diff --git a/net/sched/act_ct.c b/net/sched/act_ct.c index 9f133ed93815..9cc0bc7c71ed 100644 --- a/net/sched/act_ct.c +++ b/net/sched/act_ct.c @@ -778,49 +778,6 @@ static int tcf_ct_ipv6_is_fragment(struct sk_buff *skb, bool *frag) return 0; } -static int handle_fragments(struct net *net, struct sk_buff *skb, - u16 zone, u8 family, u16 *mru) -{ - int err; - - if (family == NFPROTO_IPV4) { - enum ip_defrag_users user = IP_DEFRAG_CONNTRACK_IN + zone; - - memset(IPCB(skb), 0, sizeof(struct inet_skb_parm)); - local_bh_disable(); - err = ip_defrag(net, skb, user); - local_bh_enable(); - if (err && err != -EINPROGRESS) - return err; - - if (!err) - *mru = IPCB(skb)->frag_max_size; - } else { /* NFPROTO_IPV6 */ -#if IS_ENABLED(CONFIG_NF_DEFRAG_IPV6) - enum ip6_defrag_users user = IP6_DEFRAG_CONNTRACK_IN + zone; - - memset(IP6CB(skb), 0, sizeof(struct inet6_skb_parm)); - err = nf_ct_frag6_gather(net, skb, user); - if (err && err != -EINPROGRESS) - goto out_free; - - if (!err) - *mru = IP6CB(skb)->frag_max_size; -#else - err = -EOPNOTSUPP; - goto out_free; -#endif - } - - skb_clear_hash(skb); - skb->ignore_df = 1; - return err; - -out_free: - kfree_skb(skb); - return err; -} - static int tcf_ct_handle_fragments(struct net *net, struct sk_buff *skb, u8 family, u16 zone, bool *defrag) { @@ -828,6 +785,7 @@ static int tcf_ct_handle_fragments(struct net *net, struct sk_buff *skb, struct nf_conn *ct; int err = 0; bool frag; + u8 proto; u16 mru; /* Previously seen (loopback)? Ignore. */ @@ -843,7 +801,7 @@ static int tcf_ct_handle_fragments(struct net *net, struct sk_buff *skb, return err; skb_get(skb); - err = handle_fragments(net, skb, zone, family, &mru); + err = nf_ct_handle_fragments(net, skb, zone, family, &proto, &mru); if (err) return err; |