[patch] (1/8) Adding 802.3ad support to bonding
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From: Shmulik Hen <hidden>
Date: 2003-03-20 15:04:29
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This patch adds support for point to point protocols (e.g. 802.3ad) over bonding that need to know the physical device the skb came on. It saves the real device in a new field in skbuff before overwriting it with the virtual interface device in skb_bond() and __vlan_hwaccel_rx(). This patch is against 2.4.20 kernel and gives compatibility for anyone who wants to test the latest release of bonding from source-forge (2.4.20-20030317). diff -Nuarp linux-2.4.20-orig/include/linux/if_vlan.h linux-2.4.20-devel/include/linux/if_vlan.h
--- linux-2.4.20-orig/include/linux/if_vlan.h 2002-11-29 01:53:15.000000000 +0200
+++ linux-2.4.20-devel/include/linux/if_vlan.h 2003-03-04 12:13:23.000000000 +0200@@ -148,6 +148,9 @@ static inline int __vlan_hwaccel_rx(stru { struct net_device_stats *stats; +#ifdef BOND_POINT_TO_POINT_PROT + skb->real_dev = skb->dev; +#endif //BOND_POINT_TO_POINT_PROT skb->dev = grp->vlan_devices[vlan_tag & VLAN_VID_MASK]; if (skb->dev == NULL) { kfree_skb(skb);
diff -Nuarp linux-2.4.20-orig/include/linux/skbuff.h linux-2.4.20-devel/include/linux/skbuff.h
--- linux-2.4.20-orig/include/linux/skbuff.h 2002-08-03 03:39:46.000000000 +0300
+++ linux-2.4.20-devel/include/linux/skbuff.h 2003-03-04 11:59:29.000000000 +0200@@ -135,6 +135,11 @@ struct sk_buff { struct sock *sk; /* Socket we are owned by */ struct timeval stamp; /* Time we arrived */ struct net_device *dev; /* Device we arrived on/are leaving by */ +#define BOND_POINT_TO_POINT_PROT + struct net_device *real_dev; /* For support of point to point protocols + (e.g. 802.3ad) over bonding, we must save the + physical device that got the packet before + replacing skb->dev with the virtual device. */ /* Transport layer header */ union
diff -Nuarp linux-2.4.20-orig/net/core/dev.c linux-2.4.20-devel/net/core/dev.c
--- linux-2.4.20-orig/net/core/dev.c 2002-11-29 01:53:15.000000000 +0200
+++ linux-2.4.20-devel/net/core/dev.c 2003-03-03 19:48:15.000000000 +0200@@ -1328,8 +1328,12 @@ static __inline__ void skb_bond(struct s { struct net_device *dev = skb->dev; - if (dev->master) - skb->dev = dev->master; + if (dev->master) { +#ifdef BOND_POINT_TO_POINT_PROT + skb->real_dev = skb->dev; +#endif //BOND_POINT_TO_POINT_PROT + skb->dev = dev->master; + } } static void net_tx_action(struct softirq_action *h)
diff -Nuarp linux-2.4.20-orig/net/core/skbuff.c linux-2.4.20-devel/net/core/skbuff.c
--- linux-2.4.20-orig/net/core/skbuff.c 2002-08-03 03:39:46.000000000 +0300
+++ linux-2.4.20-devel/net/core/skbuff.c 2003-03-03 19:51:39.000000000 +0200@@ -231,6 +231,9 @@ static inline void skb_headerinit(void * skb->sk = NULL; skb->stamp.tv_sec=0; /* No idea about time */ skb->dev = NULL; +#ifdef BOND_POINT_TO_POINT_PROT + skb->real_dev = NULL; +#endif //BOND_POINT_TO_POINT_PROT skb->dst = NULL; memset(skb->cb, 0, sizeof(skb->cb)); skb->pkt_type = PACKET_HOST; /* Default type */
@@ -362,6 +365,9 @@ struct sk_buff *skb_clone(struct sk_buff n->sk = NULL; C(stamp); C(dev); +#ifdef BOND_POINT_TO_POINT_PROT + C(real_dev); +#endif //BOND_POINT_TO_POINT_PROT C(h); C(nh); C(mac);
@@ -417,6 +423,9 @@ static void copy_skb_header(struct sk_bu new->list=NULL; new->sk=NULL; new->dev=old->dev; +#ifdef BOND_POINT_TO_POINT_PROT + new->real_dev=old->real_dev; +#endif //BOND_POINT_TO_POINT_PROT new->priority=old->priority; new->protocol=old->protocol; new->dst=dst_clone(old->dst);
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| Shmulik Hen |
| Israel Design Center (Jerusalem) |
| LAN Access Division |
| Intel Communications Group, Intel corp. |
| |
| Anti-Spam: shmulik dot hen at intel dot com |