[PATCH net 4/6] chelsio/chtls: Fix panic when listen on multiadapter

[Vinay Kumar Yadav]

Add the logic to compare net_device returned by ip_dev_find()
with the net_device list in cdev->ports[] array and return
net_device if matched else NULL.

Fixes: 6abde0b24122 ("crypto/chtls: IPv6 support for inline TLS")
Signed-off-by: Venkatesh Ellapu <venkates...@chelsio.com>
Signed-off-by: Vinay Kumar Yadav <vinay.ya...@chelsio.com>
---
 .../ethernet/chelsio/inline_crypto/chtls/chtls_cm.c    | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c 
b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c
index e46228ca49ad..bdb53fa41022 100644
--- a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c
+++ b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c
@@ -92,11 +92,13 @@ static void chtls_sock_release(struct kref *ref)
 static struct net_device *chtls_find_netdev(struct chtls_dev *cdev,
                                            struct sock *sk)
 {
+       struct adapter *adap = pci_get_drvdata(cdev->pdev);
        struct net_device *ndev = cdev->ports[0];
 #if IS_ENABLED(CONFIG_IPV6)
        struct net_device *temp;
        int addr_type;
 #endif
+       int i;
 
        switch (sk->sk_family) {
        case PF_INET:
@@ -127,8 +129,12 @@ static struct net_device *chtls_find_netdev(struct 
chtls_dev *cdev,
                return NULL;
 
        if (is_vlan_dev(ndev))
-               return vlan_dev_real_dev(ndev);
-       return ndev;
+               ndev = vlan_dev_real_dev(ndev);
+
+       for_each_port(adap, i)
+               if (cdev->ports[i] == ndev)
+                       return ndev;
+       return NULL;
 }
 
 static void assign_rxopt(struct sock *sk, unsigned int opt)
-- 
2.18.1