[PATCH] bonding: cleanup comment for mode 1 IGMP xmit hack
Expand comment explaining MAC address selection for replicated IGMP frames transmitted in bonding mode 1 (active-backup). Also, a small whitespace cleanup. Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
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1 changed files with 7 additions and 3 deletions
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@ -4242,8 +4242,8 @@ static int bond_xmit_roundrobin(struct sk_buff *skb, struct net_device *bond_dev
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}
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}
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static void bond_activebackup_xmit_copy(struct sk_buff *skb,
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static void bond_activebackup_xmit_copy(struct sk_buff *skb,
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struct bonding *bond,
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struct bonding *bond,
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struct slave *slave)
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struct slave *slave)
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{
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{
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struct sk_buff *skb2 = skb_copy(skb, GFP_ATOMIC);
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struct sk_buff *skb2 = skb_copy(skb, GFP_ATOMIC);
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struct ethhdr *eth_data;
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struct ethhdr *eth_data;
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@ -4259,7 +4259,11 @@ static void bond_activebackup_xmit_copy(struct sk_buff *skb,
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skb2->mac.raw = (unsigned char *)skb2->data;
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skb2->mac.raw = (unsigned char *)skb2->data;
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eth_data = eth_hdr(skb2);
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eth_data = eth_hdr(skb2);
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/* Pick an appropriate source MAC address */
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/* Pick an appropriate source MAC address
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* -- use slave's perm MAC addr, unless used by bond
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* -- otherwise, borrow active slave's perm MAC addr
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* since that will not be used
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*/
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hwaddr = slave->perm_hwaddr;
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hwaddr = slave->perm_hwaddr;
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if (!memcmp(eth_data->h_source, hwaddr, ETH_ALEN))
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if (!memcmp(eth_data->h_source, hwaddr, ETH_ALEN))
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hwaddr = bond->curr_active_slave->perm_hwaddr;
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hwaddr = bond->curr_active_slave->perm_hwaddr;
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