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Date: Mon, 7 Jul 2008 14:36:04 +0200 (MEST)
From: Patrick McHardy <kaber@...sh.net>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, Patrick McHardy <kaber@...sh.net>
Subject: vlan 04/07: uninline __vlan_hwaccel_rx
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: Patrick McHardy <kaber@...sh.net>
---
commit f8a70bfd12e6421b2c98e19a475633fddb5d5a2a
tree 0fdcf8c5470ec7cc9743f6850e38a99999dc8431
parent 0dba2d1f208d01290f0ea2d19a201f06da80dded
author Patrick McHardy <kaber@...sh.net> Mon, 07 Jul 2008 14:26:44 +0200
committer Patrick McHardy <kaber@...sh.net> Mon, 07 Jul 2008 14:26:44 +0200
include/linux/if_vlan.h | 64 ++++++-----------------------------------------
net/8021q/Makefile | 9 ++++---
net/8021q/vlan.h | 8 ++++++
net/8021q/vlan_core.c | 48 +++++++++++++++++++++++++++++++++++
net/Makefile | 4 ++-
5 files changed, 72 insertions(+), 61 deletions(-)
diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
index 8f5bf9b..594cd35 100644
--- a/include/linux/if_vlan.h
+++ b/include/linux/if_vlan.h
@@ -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,
diff --git a/net/8021q/Makefile b/net/8021q/Makefile
index 3006e9e..9f4f174 100644
--- a/net/8021q/Makefile
+++ b/net/8021q/Makefile
@@ -1,9 +1,10 @@
#
# Makefile for the Linux VLAN layer.
#
+obj-$(subst m,y,$(CONFIG_VLAN_8021Q)) += vlan_core.o
+obj-$(CONFIG_VLAN_8021Q) += 8021q.o
-obj-$(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
-8021q-y := vlan.o vlan_dev.o vlan_netlink.o
-8021q-$(CONFIG_VLAN_8021Q_GVRP) += vlan_gvrp.o
-8021q-$(CONFIG_PROC_FS) += vlanproc.o
diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h
index 097b2e0..7cc1a97 100644
--- a/net/8021q/vlan.h
+++ b/net/8021q/vlan.h
@@ -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);
diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c
new file mode 100644
index 0000000..a6c249c
--- /dev/null
+++ b/net/8021q/vlan_core.c
@@ -0,0 +1,48 @@
+#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);
diff --git a/net/Makefile b/net/Makefile
index b7a1364..4f43e7f 100644
--- a/net/Makefile
+++ b/net/Makefile
@@ -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/
--
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