From: Maor Gottlieb <maorg@xxxxxxxxxxxx>
Add the following WQE segments implementation:
1. Control segment.
2. Datagram segment.
3. Data segment.
Signed-off-by: Maor Gottlieb <maorg@xxxxxxxxxxxx>
Reviewed-by: Yishai Hadas <yishaih@xxxxxxxxxxxx>
---
providers/mlx4/mlx4dv.h | 88 +++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 88 insertions(+)
diff --git a/providers/mlx4/mlx4dv.h b/providers/mlx4/mlx4dv.h
index 7679ece..f15c56c 100644
--- a/providers/mlx4/mlx4dv.h
+++ b/providers/mlx4/mlx4dv.h
@@ -373,5 +373,93 @@ struct mlx4_wqe_atomic_seg {
uint64_t compare;
};
+/*
+ * Control segment - contains some control information for the current WQE.
+ *
+ * Output:
+ * seg - control segment to be filled
+ * Input:
+ * opcode - Opcode of this WQE. Encodes the type of operation
+ * to be executed on the QP.
+ * wqe_cnt - Number of queue entries.
+ * ind - WQEBB number of the first block of this WQE.
+ * fence_size - Fence bit and WQE size in octowords.
+ * srcrb_flags - High 24 bits are SRC remote buffer; low 8 bits are
+ * flags which described in mlx4_wqe_ctrl_seg struct.
+ * imm - Immediate data/Invalidation key.
+ */
+static MLX4DV_ALWAYS_INLINE
+void mlx4dv_set_ctrl_seg(struct mlx4_wqe_ctrl_seg *seg, uint8_t opcode, uint32_t
+ wqe_cnt, uint32_t ind, uint8_t fence_size,
+ uint32_t srcrb_flags, uint32_t imm)
+{
+ seg->owner_opcode = htobe32(opcode) |
+ (ind & wqe_cnt ? htobe32(1 << 31) : 0);
+ seg->fence_size = fence_size;
+ seg->srcrb_flags = srcrb_flags;
+ /*
+ * The caller should prepare "imm" in advance based on WR opcode.
+ * For IBV_WR_SEND_WITH_IMM and IBV_WR_RDMA_WRITE_WITH_IMM,
+ * the "imm" should be assigned as is.
+ * For the IBV_WR_SEND_WITH_INV, it should be htobe32(imm).
+ */
+ seg->imm = imm;
+}
+
+/*
+ * Datagram Segment - contains address information required in order
+ * to form a datagram message.
+ *
+ * Output:
+ * seg - datagram segment to be filled.
+ * Input:
+ * port_pd - Port number and protection domain.
+ * g_slid - GRH and source LID for IB port only.
+ * dlid - Remote LID.
+ * gid_index - Index to port GID table.
+ * state_rate - Maximum static rate control.
+ * hop_limit - IPv6 hop limit.
+ * sl_tclass_flowlabel - Service Level, IPv6 TClass and flow table.
+ * dgid - Remote GID for IB port only.
+ * dqpn - Destination QP.
+ * qkey - QKey.
+ * vlan - VLAN for RAW ETHERNET QP only.
+ * mac - Destination MAC for RAW ETHERNET QP only.
+ */
+static MLX4DV_ALWAYS_INLINE
+void mlx4dv_set_dgram_seg(struct mlx4_wqe_datagram_seg *seg, uint32_t port_pd,
+ uint8_t g_slid, uint16_t dlid, uint8_t gid_index,
+ uint8_t stat_rate, uint8_t hop_limit, uint32_t
+ sl_tclass_flowlabel, uint8_t *dgid, uint32_t dqpn,
+ uint32_t qkey, uint16_t vlan, uint8_t *mac)
+{
+ seg->av.port_pd = htobe32(port_pd);
+ seg->av.g_slid = g_slid;
+ seg->av.dlid = htobe16(dlid);
+ seg->av.gid_index = gid_index;
+ seg->av.stat_rate = stat_rate;
+ seg->av.hop_limit = hop_limit;
+ seg->av.sl_tclass_flowlabel = htobe32(sl_tclass_flowlabel);
+ memcpy(seg->av.dgid, dgid, 16);
+ seg->dqpn = htobe32(dqpn);
+ seg->qkey = htobe32(qkey);
+ seg->vlan = htobe16(vlan);
+ memcpy(seg->mac, mac, 6);
+}
+
+/*
+ * Data Segments - contain pointers and a byte count for the scatter/gather list.
+ * They can optionally contain data, which will save a memory read access for
+ * gather Work Requests.
+ */
+static MLX4DV_ALWAYS_INLINE
+void mlx4dv_set_data_seg(struct mlx4_wqe_data_seg *seg,
+ uint32_t length, uint32_t lkey,
+ uintptr_t address)
+{
+ seg->byte_count = htobe32(length);
+ seg->lkey = htobe32(lkey);
+ seg->addr = htobe64(address);
+}
#endif /* _MLX4DV_H_ */
--
1.8.3.1
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