[PATCH 2/3] fnic: Kernel panic due to FIP mode misconfiguration

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If switch configured in FIP and adapter configured in non-fip mode, driver
panics while queueing FIP frame in non-existing fip_frame_queue. Added config
check before queueing FIP frame in misconfiguration case to avoid kernel panic.

Signed-off-by: Hiral Patel <hiralpat@xxxxxxxxx>
---
 drivers/scsi/fnic/fnic_fcs.c |    6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/scsi/fnic/fnic_fcs.c b/drivers/scsi/fnic/fnic_fcs.c
index 41faca4..a0092e8 100644
--- a/drivers/scsi/fnic/fnic_fcs.c
+++ b/drivers/scsi/fnic/fnic_fcs.c
@@ -603,6 +603,12 @@ static inline int fnic_import_rq_eth_pkt(struct fnic *fnic, struct sk_buff *skb)
 		skb_reset_mac_header(skb);
 	}
 	if (eh->h_proto == htons(ETH_P_FIP)) {
+		if (!(fnic->config.flags & VFCF_FIP_CAPABLE)) {
+			printk(KERN_ERR "Dropped FIP frame, as firmware "
+					"uses non-FIP mode, Enable FIP "
+					"using UCSM\n");
+			goto drop;
+		}
 		skb_queue_tail(&fnic->fip_frame_queue, skb);
 		queue_work(fnic_fip_queue, &fnic->fip_frame_work);
 		return 1;		/* let caller know packet was used */
-- 
1.7.10.4

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