RDMA/nes: Implement Terminate Packet

Implement the sending and receiving of Terminate packets.

Signed-off-by: Don Wood <donald.e.wood@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 91 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/nes/nes_hw.h b/drivers/infiniband/hw/nes/nes_hw.h
index c3654c6383fe..4a0bfcd5a628 100644
--- a/drivers/infiniband/hw/nes/nes_hw.h
+++ b/drivers/infiniband/hw/nes/nes_hw.h
@@ -241,6 +241,7 @@ enum nes_cqp_stag_wqeword_idx {
 };
 
 #define NES_CQP_OP_IWARP_STATE_SHIFT 28
+#define NES_CQP_OP_TERMLEN_SHIFT     28
 
 enum nes_cqp_qp_bits {
 	NES_CQP_QP_ARP_VALID = (1<<8),
@@ -265,6 +266,8 @@ enum nes_cqp_qp_bits {
 	NES_CQP_QP_IWARP_STATE_TERMINATE = (5<<NES_CQP_OP_IWARP_STATE_SHIFT),
 	NES_CQP_QP_IWARP_STATE_ERROR = (6<<NES_CQP_OP_IWARP_STATE_SHIFT),
 	NES_CQP_QP_IWARP_STATE_MASK = (7<<NES_CQP_OP_IWARP_STATE_SHIFT),
+	NES_CQP_QP_TERM_DONT_SEND_FIN = (1<<24),
+	NES_CQP_QP_TERM_DONT_SEND_TERM_MSG = (1<<25),
 	NES_CQP_QP_RESET = (1<<31),
 };
 
@@ -633,11 +636,14 @@ enum nes_aeqe_bits {
 	NES_AEQE_INBOUND_RDMA = (1<<19),
 	NES_AEQE_IWARP_STATE_MASK = (7<<20),
 	NES_AEQE_TCP_STATE_MASK = (0xf<<24),
+	NES_AEQE_Q2_DATA_WRITTEN = (0x3<<28),
 	NES_AEQE_VALID = (1<<31),
 };
 
 #define NES_AEQE_IWARP_STATE_SHIFT	20
 #define NES_AEQE_TCP_STATE_SHIFT	24
+#define NES_AEQE_Q2_DATA_ETHERNET       (1<<28)
+#define NES_AEQE_Q2_DATA_MPA            (1<<29)
 
 enum nes_aeqe_iwarp_state {
 	NES_AEQE_IWARP_STATE_NON_EXISTANT = 0,
@@ -1119,6 +1125,7 @@ struct nes_adapter {
 	u8            netdev_max;	/* from host nic address count in EEPROM */
 	u8            port_count;
 	u8            virtwq;
+	u8            send_term_ok;
 	u8            et_use_adaptive_rx_coalesce;
 	u8            adapter_fcn_count;
 	u8 pft_mcast_map[NES_PFT_SIZE];
@@ -1217,6 +1224,90 @@ struct nes_ib_device {
 	u32 num_pd;
 };
 
+enum nes_hdrct_flags {
+	DDP_LEN_FLAG                    = 0x80,
+	DDP_HDR_FLAG                    = 0x40,
+	RDMA_HDR_FLAG                   = 0x20
+};
+
+enum nes_term_layers {
+	LAYER_RDMA			= 0,
+	LAYER_DDP			= 1,
+	LAYER_MPA			= 2
+};
+
+enum nes_term_error_types {
+	RDMAP_CATASTROPHIC		= 0,
+	RDMAP_REMOTE_PROT		= 1,
+	RDMAP_REMOTE_OP			= 2,
+	DDP_CATASTROPHIC		= 0,
+	DDP_TAGGED_BUFFER		= 1,
+	DDP_UNTAGGED_BUFFER		= 2,
+	DDP_LLP				= 3
+};
+
+enum nes_term_rdma_errors {
+	RDMAP_INV_STAG			= 0x00,
+	RDMAP_INV_BOUNDS		= 0x01,
+	RDMAP_ACCESS			= 0x02,
+	RDMAP_UNASSOC_STAG		= 0x03,
+	RDMAP_TO_WRAP			= 0x04,
+	RDMAP_INV_RDMAP_VER		= 0x05,
+	RDMAP_UNEXPECTED_OP		= 0x06,
+	RDMAP_CATASTROPHIC_LOCAL	= 0x07,
+	RDMAP_CATASTROPHIC_GLOBAL	= 0x08,
+	RDMAP_CANT_INV_STAG		= 0x09,
+	RDMAP_UNSPECIFIED		= 0xff
+};
+
+enum nes_term_ddp_errors {
+	DDP_CATASTROPHIC_LOCAL		= 0x00,
+	DDP_TAGGED_INV_STAG		= 0x00,
+	DDP_TAGGED_BOUNDS		= 0x01,
+	DDP_TAGGED_UNASSOC_STAG		= 0x02,
+	DDP_TAGGED_TO_WRAP		= 0x03,
+	DDP_TAGGED_INV_DDP_VER		= 0x04,
+	DDP_UNTAGGED_INV_QN		= 0x01,
+	DDP_UNTAGGED_INV_MSN_NO_BUF	= 0x02,
+	DDP_UNTAGGED_INV_MSN_RANGE	= 0x03,
+	DDP_UNTAGGED_INV_MO		= 0x04,
+	DDP_UNTAGGED_INV_TOO_LONG	= 0x05,
+	DDP_UNTAGGED_INV_DDP_VER	= 0x06
+};
+
+enum nes_term_mpa_errors {
+	MPA_CLOSED			= 0x01,
+	MPA_CRC				= 0x02,
+	MPA_MARKER			= 0x03,
+	MPA_REQ_RSP			= 0x04,
+};
+
+struct nes_terminate_hdr {
+	u8 layer_etype;
+	u8 error_code;
+	u8 hdrct;
+	u8 rsvd;
+};
+
+/* Used to determine how to fill in terminate error codes */
+#define IWARP_OPCODE_WRITE		0
+#define IWARP_OPCODE_READREQ		1
+#define IWARP_OPCODE_READRSP		2
+#define IWARP_OPCODE_SEND		3
+#define IWARP_OPCODE_SEND_INV		4
+#define IWARP_OPCODE_SEND_SE		5
+#define IWARP_OPCODE_SEND_SE_INV	6
+#define IWARP_OPCODE_TERM		7
+
+/* These values are used only during terminate processing */
+#define TERM_DDP_LEN_TAGGED	14
+#define TERM_DDP_LEN_UNTAGGED	18
+#define TERM_RDMA_LEN		28
+#define RDMA_OPCODE_MASK	0x0f
+#define RDMA_READ_REQ_OPCODE	1
+#define BAD_FRAME_OFFSET	64
+#define CQE_MAJOR_DRV		0x8000
+
 #define nes_vlan_rx vlan_hwaccel_receive_skb
 #define nes_netif_rx netif_receive_skb