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cxgb3i: Fix a login over vlan issue
Fix a target login issue, when parent interface is vlan and we are using cxgb3i sepecific private ip address in '/etc/iscsi/ifaces/' iface file. Acked-by: Karen Xie <kxie@chelsio.com> Signed-off-by: Rakesh Ranjan <rakesh@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -1440,6 +1440,10 @@ void cxgb3i_c3cn_release(struct s3_conn *c3cn)
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static int is_cxgb3_dev(struct net_device *dev)
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{
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struct cxgb3i_sdev_data *cdata;
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struct net_device *ndev = dev;
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if (dev->priv_flags && IFF_802_1Q_VLAN)
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ndev = vlan_dev_real_dev(dev);
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write_lock(&cdata_rwlock);
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list_for_each_entry(cdata, &cdata_list, list) {
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@ -1447,7 +1451,7 @@ static int is_cxgb3_dev(struct net_device *dev)
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int i;
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for (i = 0; i < ports->nports; i++)
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if (dev == ports->lldevs[i]) {
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if (ndev == ports->lldevs[i]) {
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write_unlock(&cdata_rwlock);
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return 1;
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}
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@ -1566,6 +1570,26 @@ out_err:
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return -1;
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}
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/* *
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* cxgb3i_find_dev - find the interface associated with the given address
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* @ipaddr: ip address
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*/
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static struct net_device *
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cxgb3i_find_dev(struct net_device *dev, __be32 ipaddr)
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{
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struct flowi fl;
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int err;
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struct rtable *rt;
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memset(&fl, 0, sizeof(fl));
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fl.nl_u.ip4_u.daddr = ipaddr;
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err = ip_route_output_key(dev ? dev_net(dev) : &init_net, &rt, &fl);
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if (!err)
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return (&rt->u.dst)->dev;
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return NULL;
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}
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/**
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* cxgb3i_c3cn_connect - initiates an iscsi tcp connection to a given address
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@ -1581,6 +1605,7 @@ int cxgb3i_c3cn_connect(struct net_device *dev, struct s3_conn *c3cn,
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struct cxgb3i_sdev_data *cdata;
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struct t3cdev *cdev;
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__be32 sipv4;
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struct net_device *dstdev;
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int err;
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c3cn_conn_debug("c3cn 0x%p, dev 0x%p.\n", c3cn, dev);
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@ -1591,6 +1616,13 @@ int cxgb3i_c3cn_connect(struct net_device *dev, struct s3_conn *c3cn,
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c3cn->daddr.sin_port = usin->sin_port;
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c3cn->daddr.sin_addr.s_addr = usin->sin_addr.s_addr;
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dstdev = cxgb3i_find_dev(dev, usin->sin_addr.s_addr);
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if (!dstdev || !is_cxgb3_dev(dstdev))
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return -ENETUNREACH;
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if (dstdev->priv_flags & IFF_802_1Q_VLAN)
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dev = dstdev;
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rt = find_route(dev, c3cn->saddr.sin_addr.s_addr,
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c3cn->daddr.sin_addr.s_addr,
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c3cn->saddr.sin_port,
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