cnic: Convert ctx_flags to bit fields

so that we can additional bit definitions without requiring a spinlock.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/cnic.c b/drivers/net/cnic.c
index 0fab720..311b2e6 100644
--- a/drivers/net/cnic.c
+++ b/drivers/net/cnic.c
@@ -1721,7 +1721,7 @@
 	struct kcqe *cqes[1];
 	u32 hw_cid, type;
 
-	if (!(ctx->ctx_flags & CTX_FL_OFFLD_START))
+	if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
 		goto skip_cfc_delete;
 
 	while (!time_after(jiffies, ctx->timestamp + (2 * HZ)))
@@ -1943,7 +1943,7 @@
 	ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
 			kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
 	if (!ret)
-		ctx->ctx_flags |= CTX_FL_OFFLD_START;
+		set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
 
 	return ret;
 }