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net/core: Allow certain receives on inactive slave.

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Allow a packet_type that specifies the exact device to receive
even on an inactive bonding slave devices.  This is important for some
L2 protocols such as LLDP and FCoE.  This can eventually be used
for the bonding special cases as well.

Signed-off-by: Joe Eykholt <jre@nuovasystems.com>
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Joe Eykholt 2008-07-02 18:22:01 -07:00 committed by Jeff Garzik
parent cc9bd5cebc
commit 0d7a368123
1 changed files with 8 additions and 7 deletions
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15
net/core/dev.c
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@ -2165,6 +2165,7 @@ int netif_receive_skb(struct sk_buff *skb)
{ {
struct packet_type *ptype, *pt_prev; struct packet_type *ptype, *pt_prev;
struct net_device *orig_dev; struct net_device *orig_dev;
struct net_device *null_or_orig;
int ret = NET_RX_DROP; int ret = NET_RX_DROP;
__be16 type; __be16 type;
@ -2178,13 +2179,13 @@ int netif_receive_skb(struct sk_buff *skb)
if (!skb->iif) if (!skb->iif)
skb->iif = skb->dev->ifindex; skb->iif = skb->dev->ifindex;
null_or_orig = NULL;
orig_dev = skb->dev; orig_dev = skb->dev;
if (orig_dev->master) { if (orig_dev->master) {
if (skb_bond_should_drop(skb)) { if (skb_bond_should_drop(skb))
kfree_skb(skb); null_or_orig = orig_dev; /* deliver only exact match */
return NET_RX_DROP; else
} skb->dev = orig_dev->master;
skb->dev = orig_dev->master;
} }
__get_cpu_var(netdev_rx_stat).total++; __get_cpu_var(netdev_rx_stat).total++;
@ -2209,7 +2210,7 @@ int netif_receive_skb(struct sk_buff *skb)
#endif #endif
list_for_each_entry_rcu(ptype, &ptype_all, list) { list_for_each_entry_rcu(ptype, &ptype_all, list) {
if (!ptype->dev || ptype->dev == skb->dev) { if (ptype->dev == null_or_orig || ptype->dev == skb->dev) {
if (pt_prev) if (pt_prev)
ret = deliver_skb(skb, pt_prev, orig_dev); ret = deliver_skb(skb, pt_prev, orig_dev);
pt_prev = ptype; pt_prev = ptype;
@ -2234,7 +2235,7 @@ int netif_receive_skb(struct sk_buff *skb)
list_for_each_entry_rcu(ptype, list_for_each_entry_rcu(ptype,
&ptype_base[ntohs(type) & PTYPE_HASH_MASK], list) { &ptype_base[ntohs(type) & PTYPE_HASH_MASK], list) {
if (ptype->type == type && if (ptype->type == type &&
(!ptype->dev || ptype->dev == skb->dev)) { (ptype->dev == null_or_orig || ptype->dev == skb->dev)) {
if (pt_prev) if (pt_prev)
ret = deliver_skb(skb, pt_prev, orig_dev); ret = deliver_skb(skb, pt_prev, orig_dev);
pt_prev = ptype; pt_prev = ptype;