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Commit cd79a238 authored by Tom Herbert's avatar Tom Herbert Committed by David S. Miller
Browse files

flow_dissector: Add flags argument to skb_flow_dissector functions 



The flags argument will allow control of the dissection process (for
instance whether to parse beyond L3).

Signed-off-by: default avatarTom Herbert <tom@herbertland.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent a6e544b0

drivers/net/bonding/bond_main.c

+1 −1
Original line number Diff line number Diff line
@@ -3095,7 +3095,7 @@ static bool bond_flow_dissect(struct bonding *bond, struct sk_buff *skb, 
	int noff, proto = -1;



	if (bond->params.xmit_policy > BOND_XMIT_POLICY_LAYER23)

		return skb_flow_dissect_flow_keys(skb, fk);

		return skb_flow_dissect_flow_keys(skb, fk, 0);



	fk->ports.ports = 0;

	noff = skb_network_offset(skb);

drivers/net/ethernet/cisco/enic/enic_clsf.c

+1 −1
Original line number Diff line number Diff line
@@ -177,7 +177,7 @@ int enic_rx_flow_steer(struct net_device *dev, const struct sk_buff *skb, 
	int res, i;



	enic = netdev_priv(dev);

	res = skb_flow_dissect_flow_keys(skb, &keys);

	res = skb_flow_dissect_flow_keys(skb, &keys, 0);

	if (!res || keys.basic.n_proto != htons(ETH_P_IP) ||

	    (keys.basic.ip_proto != IPPROTO_TCP &&

	     keys.basic.ip_proto != IPPROTO_UDP))

drivers/net/hyperv/netvsc_drv.c

+1 −1
Original line number Diff line number Diff line
@@ -239,7 +239,7 @@ static bool netvsc_set_hash(u32 *hash, struct sk_buff *skb) 
	struct flow_keys flow;

	int data_len;



	if (!skb_flow_dissect_flow_keys(skb, &flow) ||

	if (!skb_flow_dissect_flow_keys(skb, &flow, 0) ||

	    !(flow.basic.n_proto == htons(ETH_P_IP) ||

	      flow.basic.n_proto == htons(ETH_P_IPV6)))

		return false;

include/linux/skbuff.h

+11 −8
Original line number Diff line number Diff line
@@ -991,31 +991,34 @@ void skb_flow_dissector_init(struct flow_dissector *flow_dissector, 
bool __skb_flow_dissect(const struct sk_buff *skb,

			struct flow_dissector *flow_dissector,

			void *target_container,

			void *data, __be16 proto, int nhoff, int hlen);

			void *data, __be16 proto, int nhoff, int hlen,

			unsigned int flags);



static inline bool skb_flow_dissect(const struct sk_buff *skb,

				    struct flow_dissector *flow_dissector,

				    void *target_container)

				    void *target_container, unsigned int flags)

{

	return __skb_flow_dissect(skb, flow_dissector, target_container,

				  NULL, 0, 0, 0);

				  NULL, 0, 0, 0, flags);

}



static inline bool skb_flow_dissect_flow_keys(const struct sk_buff *skb,

					      struct flow_keys *flow)

					      struct flow_keys *flow,

					      unsigned int flags)

{

	memset(flow, 0, sizeof(*flow));

	return __skb_flow_dissect(skb, &flow_keys_dissector, flow,

				  NULL, 0, 0, 0);

				  NULL, 0, 0, 0, flags);

}



static inline bool skb_flow_dissect_flow_keys_buf(struct flow_keys *flow,

						  void *data, __be16 proto,

						  int nhoff, int hlen)

						  int nhoff, int hlen,

						  unsigned int flags)

{

	memset(flow, 0, sizeof(*flow));

	return __skb_flow_dissect(NULL, &flow_keys_buf_dissector, flow,

				  data, proto, nhoff, hlen);

				  data, proto, nhoff, hlen, flags);

}



static inline __u32 skb_get_hash(struct sk_buff *skb)
@@ -2046,7 +2049,7 @@ static inline void skb_probe_transport_header(struct sk_buff *skb, 


	if (skb_transport_header_was_set(skb))

		return;

	else if (skb_flow_dissect_flow_keys(skb, &keys))

	else if (skb_flow_dissect_flow_keys(skb, &keys, 0))

		skb_set_transport_header(skb, keys.control.thoff);

	else

		skb_set_transport_header(skb, offset_hint);

net/core/flow_dissector.c

+4 −3
Original line number Diff line number Diff line
@@ -121,7 +121,8 @@ EXPORT_SYMBOL(__skb_flow_get_ports); 
bool __skb_flow_dissect(const struct sk_buff *skb,

			struct flow_dissector *flow_dissector,

			void *target_container,

			void *data, __be16 proto, int nhoff, int hlen)

			void *data, __be16 proto, int nhoff, int hlen,

			unsigned int flags)

{

	struct flow_dissector_key_control *key_control;

	struct flow_dissector_key_basic *key_basic;
@@ -556,7 +557,7 @@ EXPORT_SYMBOL(flow_hash_from_keys); 
static inline u32 ___skb_get_hash(const struct sk_buff *skb,

				  struct flow_keys *keys, u32 keyval)

{

	if (!skb_flow_dissect_flow_keys(skb, keys))

	if (!skb_flow_dissect_flow_keys(skb, keys, 0))

		return 0;



	return __flow_hash_from_keys(keys, keyval);
@@ -726,7 +727,7 @@ u32 skb_get_poff(const struct sk_buff *skb) 
{

	struct flow_keys keys;



	if (!skb_flow_dissect_flow_keys(skb, &keys))

	if (!skb_flow_dissect_flow_keys(skb, &keys, 0))

		return 0;



	return __skb_get_poff(skb, skb->data, &keys, skb_headlen(skb));