From 2a5391a12297d1759b1c736634acb95793d43fb3 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Thu, 1 Sep 2005 11:29:02 +1000 Subject: [PATCH] [PATCH] iseries_veth: Fix broken promiscuous handling Due to a logic bug, once promiscuous mode is enabled in the iseries_veth driver it is never disabled. The driver keeps two flags, promiscuous and all_mcast which have exactly the same effect. This is because we only ever receive packets destined for us, or multicast packets. So consolidate them into one promiscuous flag for simplicity. Signed-off-by: Michael Ellerman Signed-off-by: Jeff Garzik --- drivers/net/iseries_veth.c | 16 +++++----------- 1 file changed, 5 insertions(+), 11 deletions(-) diff --git a/drivers/net/iseries_veth.c b/drivers/net/iseries_veth.c index db83b0d31327..74ee937c4606 100644 --- a/drivers/net/iseries_veth.c +++ b/drivers/net/iseries_veth.c @@ -159,7 +159,6 @@ struct veth_port { rwlock_t mcast_gate; int promiscuous; - int all_mcast; int num_mcast; u64 mcast_addr[VETH_MAX_MCAST]; }; @@ -756,17 +755,15 @@ static void veth_set_multicast_list(struct net_device *dev) write_lock_irqsave(&port->mcast_gate, flags); - if (dev->flags & IFF_PROMISC) { /* set promiscuous mode */ - printk(KERN_INFO "%s: Promiscuous mode enabled.\n", - dev->name); + if ((dev->flags & IFF_PROMISC) || (dev->flags & IFF_ALLMULTI) || + (dev->mc_count > VETH_MAX_MCAST)) { port->promiscuous = 1; - } else if ( (dev->flags & IFF_ALLMULTI) - || (dev->mc_count > VETH_MAX_MCAST) ) { - port->all_mcast = 1; } else { struct dev_mc_list *dmi = dev->mc_list; int i; + port->promiscuous = 0; + /* Update table */ port->num_mcast = 0; @@ -1145,12 +1142,9 @@ static inline int veth_frame_wanted(struct veth_port *port, u64 mac_addr) if ( (mac_addr == port->mac_addr) || (mac_addr == 0xffffffffffff0000) ) return 1; - if (! (((char *) &mac_addr)[0] & 0x01)) - return 0; - read_lock_irqsave(&port->mcast_gate, flags); - if (port->promiscuous || port->all_mcast) { + if (port->promiscuous) { wanted = 1; goto out; } -- GitLab