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cnic: Simplify route checking during iSCSI connection.

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With a separate IP address for iSCSI, connections should proceed
whether or not we can get a route to the target from the network stack.
It is possible that the network IP address may not reach the iSCSI target.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: Eddie Wai <waie@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2010-02-24 14:42:07 +00:00 committed by David S. Miller
parent d02a5e6c2f
commit c76284af9e
1 changed files with 13 additions and 24 deletions
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37
drivers/net/cnic.c
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@ -2860,8 +2860,8 @@ static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
{
struct cnic_dev *dev = csk->dev;
struct cnic_local *cp = dev->cnic_priv;
int is_v6, err, rc = -ENETUNREACH;
struct dst_entry *dst;
int is_v6, rc = 0;
struct dst_entry *dst = NULL;
struct net_device *realdev;
u32 local_port;
@ -2877,39 +2877,31 @@ static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
clear_bit(SK_F_IPV6, &csk->flags);
if (is_v6) {
#if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
set_bit(SK_F_IPV6, &csk->flags);
err = cnic_get_v6_route(&saddr->remote.v6, &dst);
if (err)
return err;
if (!dst || dst->error || !dst->dev)
goto err_out;
cnic_get_v6_route(&saddr->remote.v6, &dst);
memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
sizeof(struct in6_addr));
csk->dst_port = saddr->remote.v6.sin6_port;
local_port = saddr->local.v6.sin6_port;
#else
return rc;
#endif
} else {
err = cnic_get_v4_route(&saddr->remote.v4, &dst);
if (err)
return err;
if (!dst || dst->error || !dst->dev)
goto err_out;
cnic_get_v4_route(&saddr->remote.v4, &dst);
csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
csk->dst_port = saddr->remote.v4.sin_port;
local_port = saddr->local.v4.sin_port;
}
csk->vlan_id = cnic_get_vlan(dst->dev, &realdev);
if (realdev != dev->netdev)
goto err_out;
csk->vlan_id = 0;
csk->mtu = dev->netdev->mtu;
if (dst && dst->dev) {
u16 vlan = cnic_get_vlan(dst->dev, &realdev);
if (realdev == dev->netdev) {
csk->vlan_id = vlan;
csk->mtu = dst_mtu(dst);
}
}
if (local_port >= CNIC_LOCAL_PORT_MIN &&
local_port < CNIC_LOCAL_PORT_MAX) {
@ -2927,9 +2919,6 @@ static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
}
csk->src_port = local_port;
csk->mtu = dst_mtu(dst);
rc = 0;
err_out:
dst_release(dst);
return rc;