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authorDon Dugger <n0ano@n0ano.com>2016-06-03 03:33:22 +0000
committerGerrit Code Review <gerrit@172.30.200.206>2016-06-03 03:33:23 +0000
commitda27230f80795d0028333713f036d44c53cb0e68 (patch)
treeb3d379eaf000adf72b36cb01cdf4d79c3e3f064c /qemu/roms/ipxe/src/net/tcp/httpblock.c
parent0e68cb048bb8aadb14675f5d4286d8ab2fc35449 (diff)
parent437fd90c0250dee670290f9b714253671a990160 (diff)
Merge "These changes are the raw update to qemu-2.6."
Diffstat (limited to 'qemu/roms/ipxe/src/net/tcp/httpblock.c')
-rw-r--r--qemu/roms/ipxe/src/net/tcp/httpblock.c134
1 files changed, 134 insertions, 0 deletions
diff --git a/qemu/roms/ipxe/src/net/tcp/httpblock.c b/qemu/roms/ipxe/src/net/tcp/httpblock.c
new file mode 100644
index 000000000..e124ad2d6
--- /dev/null
+++ b/qemu/roms/ipxe/src/net/tcp/httpblock.c
@@ -0,0 +1,134 @@
+/*
+ * Copyright (C) 2015 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ * You can also choose to distribute this program under the terms of
+ * the Unmodified Binary Distribution Licence (as given in the file
+ * COPYING.UBDL), provided that you have satisfied its requirements.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
+
+/**
+ * @file
+ *
+ * Hyper Text Transfer Protocol (HTTP) block device
+ *
+ */
+
+#include <stdint.h>
+#include <ipxe/uaccess.h>
+#include <ipxe/blocktrans.h>
+#include <ipxe/blockdev.h>
+#include <ipxe/acpi.h>
+#include <ipxe/http.h>
+
+/** Block size used for HTTP block device requests */
+#define HTTP_BLKSIZE 512
+
+/**
+ * Read from block device
+ *
+ * @v http HTTP transaction
+ * @v data Data interface
+ * @v lba Starting logical block address
+ * @v count Number of logical blocks
+ * @v buffer Data buffer
+ * @v len Length of data buffer
+ * @ret rc Return status code
+ */
+int http_block_read ( struct http_transaction *http, struct interface *data,
+ uint64_t lba, unsigned int count, userptr_t buffer,
+ size_t len ) {
+ struct http_request_range range;
+ int rc;
+
+ /* Sanity check */
+ assert ( len == ( count * HTTP_BLKSIZE ) );
+
+ /* Construct request range descriptor */
+ range.start = ( lba * HTTP_BLKSIZE );
+ range.len = len;
+
+ /* Start a range request to retrieve the block(s) */
+ if ( ( rc = http_open ( data, &http_get, http->uri, &range,
+ NULL ) ) != 0 )
+ goto err_open;
+
+ /* Insert block device translator */
+ if ( ( rc = block_translate ( data, buffer, len ) ) != 0 ) {
+ DBGC ( http, "HTTP %p could not insert block translator: %s\n",
+ http, strerror ( rc ) );
+ goto err_translate;
+ }
+
+ return 0;
+
+ err_translate:
+ intf_restart ( data, rc );
+ err_open:
+ return rc;
+}
+
+/**
+ * Read block device capacity
+ *
+ * @v control Control interface
+ * @v data Data interface
+ * @ret rc Return status code
+ */
+int http_block_read_capacity ( struct http_transaction *http,
+ struct interface *data ) {
+ int rc;
+
+ /* Start a HEAD request to retrieve the capacity */
+ if ( ( rc = http_open ( data, &http_head, http->uri, NULL,
+ NULL ) ) != 0 )
+ goto err_open;
+
+ /* Insert block device translator */
+ if ( ( rc = block_translate ( data, UNULL, HTTP_BLKSIZE ) ) != 0 ) {
+ DBGC ( http, "HTTP %p could not insert block translator: %s\n",
+ http, strerror ( rc ) );
+ goto err_translate;
+ }
+
+ return 0;
+
+ err_translate:
+ intf_restart ( data, rc );
+ err_open:
+ return rc;
+}
+
+/**
+ * Describe device in ACPI table
+ *
+ * @v http HTTP transaction
+ * @v acpi ACPI table
+ * @v len Length of ACPI table
+ * @ret rc Return status code
+ */
+int http_acpi_describe ( struct http_transaction *http,
+ struct acpi_description_header *acpi, size_t len ) {
+
+ DBGC ( http, "HTTP %p cannot yet describe device in an ACPI table\n",
+ http );
+ ( void ) acpi;
+ ( void ) len;
+ return 0;
+}