qed: Add iSCSI out of order packet handling.

This patch adds out of order packet handling for hardware offloaded
iSCSI. Out of order packet handling requires driver buffer allocation
and assistance.

Signed-off-by: Arun Easi <arun.easi@cavium.com>
Signed-off-by: Yuval Mintz <yuval.mintz@cavium.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/qlogic/qed/Makefile

@@ -6,4 +6,4 @@ qed-y := qed_cxt.o qed_dev.o qed_hw.o qed_init_fw_funcs.o qed_init_ops.o \
 qed-$(CONFIG_QED_SRIOV) += qed_sriov.o qed_vf.o
 qed-$(CONFIG_QED_LL2) += qed_ll2.o
 qed-$(CONFIG_QED_RDMA) += qed_roce.o
-qed-$(CONFIG_QED_ISCSI) += qed_iscsi.o
+qed-$(CONFIG_QED_ISCSI) += qed_iscsi.o qed_ooo.o

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

@@ -383,6 +383,7 @@ struct qed_hwfn {
 	/* Protocol related */
 	bool				using_ll2;
 	struct qed_ll2_info		*p_ll2_info;
+	struct qed_ooo_info		*p_ooo_info;
 	struct qed_rdma_info		*p_rdma_info;
 	struct qed_iscsi_info		*p_iscsi_info;
 	struct qed_pf_params		pf_params;

drivers/net/ethernet/qlogic/qed/qed_dev.c

@@ -32,6 +32,7 @@
 #include "qed_iscsi.h"
 #include "qed_ll2.h"
 #include "qed_mcp.h"
+#include "qed_ooo.h"
 #include "qed_reg_addr.h"
 #include "qed_sp.h"
 #include "qed_sriov.h"
@@ -147,8 +148,10 @@ void qed_resc_free(struct qed_dev *cdev)
 #ifdef CONFIG_QED_LL2
 		qed_ll2_free(p_hwfn, p_hwfn->p_ll2_info);
 #endif
-		if (p_hwfn->hw_info.personality == QED_PCI_ISCSI)
+		if (p_hwfn->hw_info.personality == QED_PCI_ISCSI) {
 			qed_iscsi_free(p_hwfn, p_hwfn->p_iscsi_info);
+			qed_ooo_free(p_hwfn, p_hwfn->p_ooo_info);
+		}
 		qed_iov_free(p_hwfn);
 		qed_dmae_info_free(p_hwfn);
 		qed_dcbx_info_free(p_hwfn, p_hwfn->p_dcbx_info);
@@ -406,6 +409,7 @@ int qed_qm_reconf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
 int qed_resc_alloc(struct qed_dev *cdev)
 {
 	struct qed_iscsi_info *p_iscsi_info;
+	struct qed_ooo_info *p_ooo_info;
 #ifdef CONFIG_QED_LL2
 	struct qed_ll2_info *p_ll2_info;
 #endif
@@ -516,6 +520,10 @@ int qed_resc_alloc(struct qed_dev *cdev)
 			if (!p_iscsi_info)
 				goto alloc_no_mem;
 			p_hwfn->p_iscsi_info = p_iscsi_info;
+			p_ooo_info = qed_ooo_alloc(p_hwfn);
+			if (!p_ooo_info)
+				goto alloc_no_mem;
+			p_hwfn->p_ooo_info = p_ooo_info;
 		}
 
 		/* DMA info initialization */
@@ -570,8 +578,10 @@ void qed_resc_setup(struct qed_dev *cdev)
 		if (p_hwfn->using_ll2)
 			qed_ll2_setup(p_hwfn, p_hwfn->p_ll2_info);
 #endif
-		if (p_hwfn->hw_info.personality == QED_PCI_ISCSI)
+		if (p_hwfn->hw_info.personality == QED_PCI_ISCSI) {
 			qed_iscsi_setup(p_hwfn, p_hwfn->p_iscsi_info);
+			qed_ooo_setup(p_hwfn, p_hwfn->p_ooo_info);
+		}
 	}
 }