qed: add support for dcbx.

This patch adds the necessary driver support for Management Firmware to
configure the device/firmware with the dcbx results. Management Firmware
is responsible for communicating the DCBX and driving the negotiation,
but the driver has responsibility of receiving async notification and
configuring the results in hw/fw. This patch also adds the dcbx support for
future protocols (e.g., FCoE) as preparation to their imminent submission.

Signed-off-by: Sudarsana Reddy Kalluru <sudarsana.kalluru@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/qlogic/qed/Makefile

@@ -2,5 +2,5 @@ obj-$(CONFIG_QED) := qed.o
 
 qed-y := qed_cxt.o qed_dev.o qed_hw.o qed_init_fw_funcs.o qed_init_ops.o \
 	 qed_int.o qed_main.o qed_mcp.o qed_sp_commands.o qed_spq.o qed_l2.o \
-	 qed_selftest.o
+	 qed_selftest.o qed_dcbx.o
 qed-$(CONFIG_QED_SRIOV) += qed_sriov.o qed_vf.o

drivers/net/ethernet/qlogic/qed/qed.h

@@ -367,6 +367,8 @@ struct qed_hwfn {
 	struct qed_pf_iov		*pf_iov_info;
 	struct qed_mcp_info		*mcp_info;
 
+	struct qed_dcbx_info		*p_dcbx_info;
+
 	struct qed_hw_cid_data		*p_tx_cids;
 	struct qed_hw_cid_data		*p_rx_cids;
 

drivers/net/ethernet/qlogic/qed/qed_cxt.h

@@ -130,6 +130,16 @@ void qed_cxt_hw_init_pf(struct qed_hwfn *p_hwfn);
 
 void qed_qm_init_pf(struct qed_hwfn *p_hwfn);
 
+/**
+ * @brief Reconfigures QM pf on the fly
+ *
+ * @param p_hwfn
+ * @param p_ptt
+ *
+ * @return int
+ */
+int qed_qm_reconf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
+
 /**
  * @brief qed_cxt_release - Release a cid
  *