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authorRajithaY <rajithax.yerrumsetty@intel.com>2017-04-25 03:31:15 -0700
committerRajitha Yerrumchetty <rajithax.yerrumsetty@intel.com>2017-05-22 06:48:08 +0000
commitbb756eebdac6fd24e8919e2c43f7d2c8c4091f59 (patch)
treeca11e03542edf2d8f631efeca5e1626d211107e3 /qemu/net/checksum.c
parenta14b48d18a9ed03ec191cf16b162206998a895ce (diff)
Adding qemu as a submodule of KVMFORNFV
This Patch includes the changes to add qemu as a submodule to kvmfornfv repo and make use of the updated latest qemu for the execution of all testcase Change-Id: I1280af507a857675c7f81d30c95255635667bdd7 Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>
Diffstat (limited to 'qemu/net/checksum.c')
-rw-r--r--qemu/net/checksum.c122
1 files changed, 0 insertions, 122 deletions
diff --git a/qemu/net/checksum.c b/qemu/net/checksum.c
deleted file mode 100644
index d0fa424cc..000000000
--- a/qemu/net/checksum.c
+++ /dev/null
@@ -1,122 +0,0 @@
-/*
- * IP checksumming functions.
- * (c) 2008 Gerd Hoffmann <kraxel@redhat.com>
- *
- * 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; under version 2 or later of the License.
- *
- * 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, see <http://www.gnu.org/licenses/>.
- */
-
-#include "qemu/osdep.h"
-#include "qemu-common.h"
-#include "net/checksum.h"
-
-#define PROTO_TCP 6
-#define PROTO_UDP 17
-
-uint32_t net_checksum_add_cont(int len, uint8_t *buf, int seq)
-{
- uint32_t sum = 0;
- int i;
-
- for (i = seq; i < seq + len; i++) {
- if (i & 1) {
- sum += (uint32_t)buf[i - seq];
- } else {
- sum += (uint32_t)buf[i - seq] << 8;
- }
- }
- return sum;
-}
-
-uint16_t net_checksum_finish(uint32_t sum)
-{
- while (sum>>16)
- sum = (sum & 0xFFFF)+(sum >> 16);
- return ~sum;
-}
-
-uint16_t net_checksum_tcpudp(uint16_t length, uint16_t proto,
- uint8_t *addrs, uint8_t *buf)
-{
- uint32_t sum = 0;
-
- sum += net_checksum_add(length, buf); // payload
- sum += net_checksum_add(8, addrs); // src + dst address
- sum += proto + length; // protocol & length
- return net_checksum_finish(sum);
-}
-
-void net_checksum_calculate(uint8_t *data, int length)
-{
- int hlen, plen, proto, csum_offset;
- uint16_t csum;
-
- /* Ensure data has complete L2 & L3 headers. */
- if (length < 14 + 20) {
- return;
- }
-
- if ((data[14] & 0xf0) != 0x40)
- return; /* not IPv4 */
- hlen = (data[14] & 0x0f) * 4;
- plen = (data[16] << 8 | data[17]) - hlen;
- proto = data[23];
-
- switch (proto) {
- case PROTO_TCP:
- csum_offset = 16;
- break;
- case PROTO_UDP:
- csum_offset = 6;
- break;
- default:
- return;
- }
-
- if (plen < csum_offset + 2 || 14 + hlen + plen > length) {
- return;
- }
-
- data[14+hlen+csum_offset] = 0;
- data[14+hlen+csum_offset+1] = 0;
- csum = net_checksum_tcpudp(plen, proto, data+14+12, data+14+hlen);
- data[14+hlen+csum_offset] = csum >> 8;
- data[14+hlen+csum_offset+1] = csum & 0xff;
-}
-
-uint32_t
-net_checksum_add_iov(const struct iovec *iov, const unsigned int iov_cnt,
- uint32_t iov_off, uint32_t size)
-{
- size_t iovec_off, buf_off;
- unsigned int i;
- uint32_t res = 0;
- uint32_t seq = 0;
-
- iovec_off = 0;
- buf_off = 0;
- for (i = 0; i < iov_cnt && size; i++) {
- if (iov_off < (iovec_off + iov[i].iov_len)) {
- size_t len = MIN((iovec_off + iov[i].iov_len) - iov_off , size);
- void *chunk_buf = iov[i].iov_base + (iov_off - iovec_off);
-
- res += net_checksum_add_cont(len, chunk_buf, seq);
- seq += len;
-
- buf_off += len;
- iov_off += len;
- size -= len;
- }
- iovec_off += iov[i].iov_len;
- }
- return res;
-}