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[SCSI] cxgb3i: Fix a login over vlan issue

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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.

Signed-off-by: Rakesh Ranjan <rakesh@chelsio.com>
Acked-by: Karen Xie <kxie@chelsio.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Rakesh Ranjan 2009-12-15 12:19:19 +05:30 committed by James Bottomley
parent 6b7b284958
commit 44214ab474
1 changed files with 33 additions and 1 deletions
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34
drivers/scsi/cxgb3i/cxgb3i_offload.c
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@ -1440,6 +1440,10 @@ void cxgb3i_c3cn_release(struct s3_conn *c3cn)
static int is_cxgb3_dev(struct net_device *dev)
{
struct cxgb3i_sdev_data *cdata;
struct net_device *ndev = dev;
if (dev->priv_flags & IFF_802_1Q_VLAN)
ndev = vlan_dev_real_dev(dev);
write_lock(&cdata_rwlock);
list_for_each_entry(cdata, &cdata_list, list) {
@ -1447,7 +1451,7 @@ static int is_cxgb3_dev(struct net_device *dev)
int i;
for (i = 0; i < ports->nports; i++)
if (dev == ports->lldevs[i]) {
if (ndev == ports->lldevs[i]) {
write_unlock(&cdata_rwlock);
return 1;
}
@ -1566,6 +1570,26 @@ out_err:
return -EINVAL;
}
/**
* cxgb3i_find_dev - find the interface associated with the given address
* @ipaddr: ip address
*/
static struct net_device *
cxgb3i_find_dev(struct net_device *dev, __be32 ipaddr)
{
struct flowi fl;
int err;
struct rtable *rt;
memset(&fl, 0, sizeof(fl));
fl.nl_u.ip4_u.daddr = ipaddr;
err = ip_route_output_key(dev ? dev_net(dev) : &init_net, &rt, &fl);
if (!err)
return (&rt->u.dst)->dev;
return NULL;
}
/**
* cxgb3i_c3cn_connect - initiates an iscsi tcp connection to a given address
@ -1581,6 +1605,7 @@ int cxgb3i_c3cn_connect(struct net_device *dev, struct s3_conn *c3cn,
struct cxgb3i_sdev_data *cdata;
struct t3cdev *cdev;
__be32 sipv4;
struct net_device *dstdev;
int err;
c3cn_conn_debug("c3cn 0x%p, dev 0x%p.\n", c3cn, dev);
@ -1591,6 +1616,13 @@ int cxgb3i_c3cn_connect(struct net_device *dev, struct s3_conn *c3cn,
c3cn->daddr.sin_port = usin->sin_port;
c3cn->daddr.sin_addr.s_addr = usin->sin_addr.s_addr;
dstdev = cxgb3i_find_dev(dev, usin->sin_addr.s_addr);
if (!dstdev || !is_cxgb3_dev(dstdev))
return -ENETUNREACH;
if (dstdev->priv_flags & IFF_802_1Q_VLAN)
dev = dstdev;
rt = find_route(dev, c3cn->saddr.sin_addr.s_addr,
c3cn->daddr.sin_addr.s_addr,
c3cn->saddr.sin_port,