diff options
| -rw-r--r-- | include/net/flow_keys.h | 4 | ||||
| -rw-r--r-- | net/core/flow_dissector.c | 18 |
2 files changed, 17 insertions, 5 deletions
diff --git a/include/net/flow_keys.h b/include/net/flow_keys.h index 4040f63932c5..9a03f73c4974 100644 --- a/include/net/flow_keys.h +++ b/include/net/flow_keys.h @@ -28,10 +28,10 @@ struct flow_keys { }; bool __skb_flow_dissect(const struct sk_buff *skb, struct flow_keys *flow, - void *data, int hlen); + void *data, __be16 proto, int nhoff, int hlen); static inline bool skb_flow_dissect(const struct sk_buff *skb, struct flow_keys *flow) { - return __skb_flow_dissect(skb, flow, NULL, 0); + return __skb_flow_dissect(skb, flow, NULL, 0, 0, 0); } __be32 __skb_flow_get_ports(const struct sk_buff *skb, int thoff, u8 ip_proto, void *data, int hlen_proto); diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c index ae8f0db67aed..12f48ca7a0b0 100644 --- a/net/core/flow_dissector.c +++ b/net/core/flow_dissector.c @@ -59,14 +59,26 @@ __be32 __skb_flow_get_ports(const struct sk_buff *skb, int thoff, u8 ip_proto, } EXPORT_SYMBOL(__skb_flow_get_ports); -bool __skb_flow_dissect(const struct sk_buff *skb, struct flow_keys *flow, void *data, int hlen) +/** + * __skb_flow_dissect - extract the flow_keys struct and return it + * @skb: sk_buff to extract the flow from, can be NULL if the rest are specified + * @data: raw buffer pointer to the packet, if NULL use skb->data + * @proto: protocol for which to get the flow, if @data is NULL use skb->protocol + * @nhoff: network header offset, if @data is NULL use skb_network_offset(skb) + * @hlen: packet header length, if @data is NULL use skb_headlen(skb) + * + * The function will try to retrieve the struct flow_keys from either the skbuff + * or a raw buffer specified by the rest parameters + */ +bool __skb_flow_dissect(const struct sk_buff *skb, struct flow_keys *flow, + void *data, __be16 proto, int nhoff, int hlen) { - int nhoff = skb_network_offset(skb); u8 ip_proto; - __be16 proto = skb->protocol; if (!data) { data = skb->data; + proto = skb->protocol; + nhoff = skb_network_offset(skb); hlen = skb_headlen(skb); } |