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Commit 7750f403 authored by Patrick McHardy's avatar Patrick McHardy Committed by David S. Miller
Browse files

vlan: uninline __vlan_hwaccel_rx 



The function is huge and included at least once in every VLAN acceleration
capable driver. Uninline it; to avoid having drivers depend on the VLAN
module, the function is always built in statically when VLAN is enabled.

With all VLAN acceleration capable drivers that build on x86_64 enabled,
this results in:

   text    data     bss     dec     hex filename
6515227  854044  343968 7713239  75b1d7 vmlinux.inlined
6505637  854044  343968 7703649  758c61 vmlinux.uninlined
----------------------------------------------------------
  -9590

Signed-off-by: default avatarPatrick McHardy <kaber@trash.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 75b8846a

include/linux/if_vlan.h

+8 −56
Original line number Diff line number Diff line
@@ -150,15 +150,6 @@ static inline struct vlan_dev_info *vlan_dev_info(const struct net_device *dev) 
	return netdev_priv(dev);

}



/* inline functions */

static inline __u32 vlan_get_ingress_priority(struct net_device *dev,

					      unsigned short vlan_tag)

{

	struct vlan_dev_info *vip = vlan_dev_info(dev);



	return vip->ingress_priority_map[(vlan_tag >> 13) & 0x7];

}



/* VLAN tx hw acceleration helpers. */

struct vlan_skb_tx_cookie {

	u32	magic;
@@ -171,56 +162,17 @@ struct vlan_skb_tx_cookie { 
	(VLAN_TX_SKB_CB(__skb)->magic == VLAN_TX_COOKIE_MAGIC)

#define vlan_tx_tag_get(__skb)	(VLAN_TX_SKB_CB(__skb)->vlan_tag)



/* VLAN rx hw acceleration helper.  This acts like netif_{rx,receive_skb}(). */

static inline int __vlan_hwaccel_rx(struct sk_buff *skb,

				    struct vlan_group *grp,

#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)

extern int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp,

			     unsigned short vlan_tag, int polling);

#else

static inline int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp,

				    unsigned short vlan_tag, int polling)

{

	struct net_device_stats *stats;



	if (skb_bond_should_drop(skb)) {

		dev_kfree_skb_any(skb);

		return NET_RX_DROP;

	}



	skb->dev = vlan_group_get_device(grp, vlan_tag & VLAN_VID_MASK);

	if (skb->dev == NULL) {

		dev_kfree_skb_any(skb);



		/* Not NET_RX_DROP, this is not being dropped

		 * due to congestion.

		 */

		return 0;

	}



	skb->dev->last_rx = jiffies;



	stats = &skb->dev->stats;

	stats->rx_packets++;

	stats->rx_bytes += skb->len;



	skb->priority = vlan_get_ingress_priority(skb->dev, vlan_tag);

	switch (skb->pkt_type) {

	case PACKET_BROADCAST:

		break;



	case PACKET_MULTICAST:

		stats->multicast++;

		break;



	case PACKET_OTHERHOST:

		/* Our lower layer thinks this is not local, let's make sure.

		 * This allows the VLAN to have a different MAC than the underlying

		 * device, and still route correctly.

		 */

		if (!compare_ether_addr(eth_hdr(skb)->h_dest,

				       	skb->dev->dev_addr))

			skb->pkt_type = PACKET_HOST;

		break;

	};



	return (polling ? netif_receive_skb(skb) : netif_rx(skb));

	BUG();

	return NET_XMIT_SUCCESS;

}

#endif



static inline int vlan_hwaccel_rx(struct sk_buff *skb,

				  struct vlan_group *grp,

net/8021q/Makefile

+5 −4
Original line number Diff line number Diff line 
#

# Makefile for the Linux VLAN layer.

#



obj-$(subst m,y,$(CONFIG_VLAN_8021Q))	+= vlan_core.o

obj-$(CONFIG_VLAN_8021Q)		+= 8021q.o



8021q-y					:= vlan.o vlan_dev.o vlan_netlink.o

8021q-$(CONFIG_VLAN_8021Q_GVRP)		+= vlan_gvrp.o

8021q-$(CONFIG_PROC_FS)			+= vlanproc.o

net/8021q/vlan.h

+8 −0
Original line number Diff line number Diff line
@@ -37,6 +37,14 @@ void vlan_setup(struct net_device *dev); 
int register_vlan_dev(struct net_device *dev);

void unregister_vlan_dev(struct net_device *dev);



static inline u32 vlan_get_ingress_priority(struct net_device *dev,

					    unsigned short vlan_tag)

{

	struct vlan_dev_info *vip = vlan_dev_info(dev);



	return vip->ingress_priority_map[(vlan_tag >> 13) & 0x7];

}



#ifdef CONFIG_VLAN_8021Q_GVRP

extern int vlan_gvrp_request_join(const struct net_device *dev);

extern void vlan_gvrp_request_leave(const struct net_device *dev);

net/8021q/vlan_core.c

0 → 100644
+48 −0
Original line number Diff line number Diff line 
#include <linux/skbuff.h>

#include <linux/netdevice.h>

#include <linux/if_vlan.h>

#include "vlan.h"



/* VLAN rx hw acceleration helper.  This acts like netif_{rx,receive_skb}(). */

int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp,

		      unsigned short vlan_tag, int polling)

{

	struct net_device_stats *stats;



	if (skb_bond_should_drop(skb)) {

		dev_kfree_skb_any(skb);

		return NET_RX_DROP;

	}



	skb->dev = vlan_group_get_device(grp, vlan_tag & VLAN_VID_MASK);

	if (skb->dev == NULL) {

		dev_kfree_skb_any(skb);

		/* Not NET_RX_DROP, this is not being dropped

		 * due to congestion. */

		return NET_RX_SUCCESS;

	}

	skb->dev->last_rx = jiffies;



	stats = &skb->dev->stats;

	stats->rx_packets++;

	stats->rx_bytes += skb->len;



	skb->priority = vlan_get_ingress_priority(skb->dev, vlan_tag);

	switch (skb->pkt_type) {

	case PACKET_BROADCAST:

		break;

	case PACKET_MULTICAST:

		stats->multicast++;

		break;

	case PACKET_OTHERHOST:

		/* Our lower layer thinks this is not local, let's make sure.

		 * This allows the VLAN to have a different MAC than the

		 * underlying device, and still route correctly. */

		if (!compare_ether_addr(eth_hdr(skb)->h_dest,

					skb->dev->dev_addr))

			skb->pkt_type = PACKET_HOST;

		break;

	};

	return (polling ? netif_receive_skb(skb) : netif_rx(skb));

}

EXPORT_SYMBOL(__vlan_hwaccel_rx);

net/Makefile

+3 −1
Original line number Diff line number Diff line
@@ -42,7 +42,9 @@ obj-$(CONFIG_AF_RXRPC) += rxrpc/ 
obj-$(CONFIG_ATM)		+= atm/

obj-$(CONFIG_DECNET)		+= decnet/

obj-$(CONFIG_ECONET)		+= econet/

obj-$(CONFIG_VLAN_8021Q)	+= 8021q/

ifneq ($(CONFIG_VLAN_8021Q),)

obj-y				+= 8021q/

endif

obj-$(CONFIG_IP_DCCP)		+= dccp/

obj-$(CONFIG_IP_SCTP)		+= sctp/

obj-y				+= wireless/