Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/infiniband/core/ud_header.c b/drivers/infiniband/core/ud_header.c
new file mode 100644
index 0000000..dc4eb1d
--- /dev/null
+++ b/drivers/infiniband/core/ud_header.c
@@ -0,0 +1,365 @@
+/*
+ * Copyright (c) 2004 Topspin Corporation. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * $Id: ud_header.c 1349 2004-12-16 21:09:43Z roland $
+ */
+
+#include <linux/errno.h>
+
+#include <ib_pack.h>
+
+#define STRUCT_FIELD(header, field) \
+ .struct_offset_bytes = offsetof(struct ib_unpacked_ ## header, field), \
+ .struct_size_bytes = sizeof ((struct ib_unpacked_ ## header *) 0)->field, \
+ .field_name = #header ":" #field
+
+static const struct ib_field lrh_table[] = {
+ { STRUCT_FIELD(lrh, virtual_lane),
+ .offset_words = 0,
+ .offset_bits = 0,
+ .size_bits = 4 },
+ { STRUCT_FIELD(lrh, link_version),
+ .offset_words = 0,
+ .offset_bits = 4,
+ .size_bits = 4 },
+ { STRUCT_FIELD(lrh, service_level),
+ .offset_words = 0,
+ .offset_bits = 8,
+ .size_bits = 4 },
+ { RESERVED,
+ .offset_words = 0,
+ .offset_bits = 12,
+ .size_bits = 2 },
+ { STRUCT_FIELD(lrh, link_next_header),
+ .offset_words = 0,
+ .offset_bits = 14,
+ .size_bits = 2 },
+ { STRUCT_FIELD(lrh, destination_lid),
+ .offset_words = 0,
+ .offset_bits = 16,
+ .size_bits = 16 },
+ { RESERVED,
+ .offset_words = 1,
+ .offset_bits = 0,
+ .size_bits = 5 },
+ { STRUCT_FIELD(lrh, packet_length),
+ .offset_words = 1,
+ .offset_bits = 5,
+ .size_bits = 11 },
+ { STRUCT_FIELD(lrh, source_lid),
+ .offset_words = 1,
+ .offset_bits = 16,
+ .size_bits = 16 }
+};
+
+static const struct ib_field grh_table[] = {
+ { STRUCT_FIELD(grh, ip_version),
+ .offset_words = 0,
+ .offset_bits = 0,
+ .size_bits = 4 },
+ { STRUCT_FIELD(grh, traffic_class),
+ .offset_words = 0,
+ .offset_bits = 4,
+ .size_bits = 8 },
+ { STRUCT_FIELD(grh, flow_label),
+ .offset_words = 0,
+ .offset_bits = 12,
+ .size_bits = 20 },
+ { STRUCT_FIELD(grh, payload_length),
+ .offset_words = 1,
+ .offset_bits = 0,
+ .size_bits = 16 },
+ { STRUCT_FIELD(grh, next_header),
+ .offset_words = 1,
+ .offset_bits = 16,
+ .size_bits = 8 },
+ { STRUCT_FIELD(grh, hop_limit),
+ .offset_words = 1,
+ .offset_bits = 24,
+ .size_bits = 8 },
+ { STRUCT_FIELD(grh, source_gid),
+ .offset_words = 2,
+ .offset_bits = 0,
+ .size_bits = 128 },
+ { STRUCT_FIELD(grh, destination_gid),
+ .offset_words = 6,
+ .offset_bits = 0,
+ .size_bits = 128 }
+};
+
+static const struct ib_field bth_table[] = {
+ { STRUCT_FIELD(bth, opcode),
+ .offset_words = 0,
+ .offset_bits = 0,
+ .size_bits = 8 },
+ { STRUCT_FIELD(bth, solicited_event),
+ .offset_words = 0,
+ .offset_bits = 8,
+ .size_bits = 1 },
+ { STRUCT_FIELD(bth, mig_req),
+ .offset_words = 0,
+ .offset_bits = 9,
+ .size_bits = 1 },
+ { STRUCT_FIELD(bth, pad_count),
+ .offset_words = 0,
+ .offset_bits = 10,
+ .size_bits = 2 },
+ { STRUCT_FIELD(bth, transport_header_version),
+ .offset_words = 0,
+ .offset_bits = 12,
+ .size_bits = 4 },
+ { STRUCT_FIELD(bth, pkey),
+ .offset_words = 0,
+ .offset_bits = 16,
+ .size_bits = 16 },
+ { RESERVED,
+ .offset_words = 1,
+ .offset_bits = 0,
+ .size_bits = 8 },
+ { STRUCT_FIELD(bth, destination_qpn),
+ .offset_words = 1,
+ .offset_bits = 8,
+ .size_bits = 24 },
+ { STRUCT_FIELD(bth, ack_req),
+ .offset_words = 2,
+ .offset_bits = 0,
+ .size_bits = 1 },
+ { RESERVED,
+ .offset_words = 2,
+ .offset_bits = 1,
+ .size_bits = 7 },
+ { STRUCT_FIELD(bth, psn),
+ .offset_words = 2,
+ .offset_bits = 8,
+ .size_bits = 24 }
+};
+
+static const struct ib_field deth_table[] = {
+ { STRUCT_FIELD(deth, qkey),
+ .offset_words = 0,
+ .offset_bits = 0,
+ .size_bits = 32 },
+ { RESERVED,
+ .offset_words = 1,
+ .offset_bits = 0,
+ .size_bits = 8 },
+ { STRUCT_FIELD(deth, source_qpn),
+ .offset_words = 1,
+ .offset_bits = 8,
+ .size_bits = 24 }
+};
+
+/**
+ * ib_ud_header_init - Initialize UD header structure
+ * @payload_bytes:Length of packet payload
+ * @grh_present:GRH flag (if non-zero, GRH will be included)
+ * @header:Structure to initialize
+ *
+ * ib_ud_header_init() initializes the lrh.link_version, lrh.link_next_header,
+ * lrh.packet_length, grh.ip_version, grh.payload_length,
+ * grh.next_header, bth.opcode, bth.pad_count and
+ * bth.transport_header_version fields of a &struct ib_ud_header given
+ * the payload length and whether a GRH will be included.
+ */
+void ib_ud_header_init(int payload_bytes,
+ int grh_present,
+ struct ib_ud_header *header)
+{
+ int header_len;
+
+ memset(header, 0, sizeof *header);
+
+ header_len =
+ IB_LRH_BYTES +
+ IB_BTH_BYTES +
+ IB_DETH_BYTES;
+ if (grh_present) {
+ header_len += IB_GRH_BYTES;
+ }
+
+ header->lrh.link_version = 0;
+ header->lrh.link_next_header =
+ grh_present ? IB_LNH_IBA_GLOBAL : IB_LNH_IBA_LOCAL;
+ header->lrh.packet_length = (IB_LRH_BYTES +
+ IB_BTH_BYTES +
+ IB_DETH_BYTES +
+ payload_bytes +
+ 4 + /* ICRC */
+ 3) / 4; /* round up */
+
+ header->grh_present = grh_present;
+ if (grh_present) {
+ header->lrh.packet_length += IB_GRH_BYTES / 4;
+
+ header->grh.ip_version = 6;
+ header->grh.payload_length =
+ cpu_to_be16((IB_BTH_BYTES +
+ IB_DETH_BYTES +
+ payload_bytes +
+ 4 + /* ICRC */
+ 3) & ~3); /* round up */
+ header->grh.next_header = 0x1b;
+ }
+
+ cpu_to_be16s(&header->lrh.packet_length);
+
+ if (header->immediate_present)
+ header->bth.opcode = IB_OPCODE_UD_SEND_ONLY_WITH_IMMEDIATE;
+ else
+ header->bth.opcode = IB_OPCODE_UD_SEND_ONLY;
+ header->bth.pad_count = (4 - payload_bytes) & 3;
+ header->bth.transport_header_version = 0;
+}
+EXPORT_SYMBOL(ib_ud_header_init);
+
+/**
+ * ib_ud_header_pack - Pack UD header struct into wire format
+ * @header:UD header struct
+ * @buf:Buffer to pack into
+ *
+ * ib_ud_header_pack() packs the UD header structure @header into wire
+ * format in the buffer @buf.
+ */
+int ib_ud_header_pack(struct ib_ud_header *header,
+ void *buf)
+{
+ int len = 0;
+
+ ib_pack(lrh_table, ARRAY_SIZE(lrh_table),
+ &header->lrh, buf);
+ len += IB_LRH_BYTES;
+
+ if (header->grh_present) {
+ ib_pack(grh_table, ARRAY_SIZE(grh_table),
+ &header->grh, buf + len);
+ len += IB_GRH_BYTES;
+ }
+
+ ib_pack(bth_table, ARRAY_SIZE(bth_table),
+ &header->bth, buf + len);
+ len += IB_BTH_BYTES;
+
+ ib_pack(deth_table, ARRAY_SIZE(deth_table),
+ &header->deth, buf + len);
+ len += IB_DETH_BYTES;
+
+ if (header->immediate_present) {
+ memcpy(buf + len, &header->immediate_data, sizeof header->immediate_data);
+ len += sizeof header->immediate_data;
+ }
+
+ return len;
+}
+EXPORT_SYMBOL(ib_ud_header_pack);
+
+/**
+ * ib_ud_header_unpack - Unpack UD header struct from wire format
+ * @header:UD header struct
+ * @buf:Buffer to pack into
+ *
+ * ib_ud_header_pack() unpacks the UD header structure @header from wire
+ * format in the buffer @buf.
+ */
+int ib_ud_header_unpack(void *buf,
+ struct ib_ud_header *header)
+{
+ ib_unpack(lrh_table, ARRAY_SIZE(lrh_table),
+ buf, &header->lrh);
+ buf += IB_LRH_BYTES;
+
+ if (header->lrh.link_version != 0) {
+ printk(KERN_WARNING "Invalid LRH.link_version %d\n",
+ header->lrh.link_version);
+ return -EINVAL;
+ }
+
+ switch (header->lrh.link_next_header) {
+ case IB_LNH_IBA_LOCAL:
+ header->grh_present = 0;
+ break;
+
+ case IB_LNH_IBA_GLOBAL:
+ header->grh_present = 1;
+ ib_unpack(grh_table, ARRAY_SIZE(grh_table),
+ buf, &header->grh);
+ buf += IB_GRH_BYTES;
+
+ if (header->grh.ip_version != 6) {
+ printk(KERN_WARNING "Invalid GRH.ip_version %d\n",
+ header->grh.ip_version);
+ return -EINVAL;
+ }
+ if (header->grh.next_header != 0x1b) {
+ printk(KERN_WARNING "Invalid GRH.next_header 0x%02x\n",
+ header->grh.next_header);
+ return -EINVAL;
+ }
+ break;
+
+ default:
+ printk(KERN_WARNING "Invalid LRH.link_next_header %d\n",
+ header->lrh.link_next_header);
+ return -EINVAL;
+ }
+
+ ib_unpack(bth_table, ARRAY_SIZE(bth_table),
+ buf, &header->bth);
+ buf += IB_BTH_BYTES;
+
+ switch (header->bth.opcode) {
+ case IB_OPCODE_UD_SEND_ONLY:
+ header->immediate_present = 0;
+ break;
+ case IB_OPCODE_UD_SEND_ONLY_WITH_IMMEDIATE:
+ header->immediate_present = 1;
+ break;
+ default:
+ printk(KERN_WARNING "Invalid BTH.opcode 0x%02x\n",
+ header->bth.opcode);
+ return -EINVAL;
+ }
+
+ if (header->bth.transport_header_version != 0) {
+ printk(KERN_WARNING "Invalid BTH.transport_header_version %d\n",
+ header->bth.transport_header_version);
+ return -EINVAL;
+ }
+
+ ib_unpack(deth_table, ARRAY_SIZE(deth_table),
+ buf, &header->deth);
+ buf += IB_DETH_BYTES;
+
+ if (header->immediate_present)
+ memcpy(&header->immediate_data, buf, sizeof header->immediate_data);
+
+ return 0;
+}
+EXPORT_SYMBOL(ib_ud_header_unpack);