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authorPatrick McHardy <kaber@trash.net>2008-07-08 03:23:36 -0700
committerDavid S. Miller <davem@davemloft.net>2008-07-08 03:23:36 -0700
commit7750f403cbe56971336d575b354365190b4e3227 (patch)
treebc8a65b0dd0d5cc3faac943f7e3df0c6dfedeaf6 /net
parent75b8846acd11ad3fc736d4df3413fe946bbf367c (diff)
downloadlinux-7750f403cbe56971336d575b354365190b4e3227.tar.gz
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@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/8021q/Makefile9
-rw-r--r--net/8021q/vlan.h8
-rw-r--r--net/8021q/vlan_core.c48
-rw-r--r--net/Makefile4
4 files changed, 64 insertions, 5 deletions
diff --git a/net/8021q/Makefile b/net/8021q/Makefile
index 3006e9ed7b0..9f4f174ead1 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 097b2e04c92..7cc1a97c42f 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 00000000000..85c94edb000
--- /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 b7a13643b54..4f43e7f874f 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/