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authorDmitry Fleytman <dmitry@daynix.com>2013-03-09 11:21:03 +0200
committerStefan Hajnoczi <stefanha@redhat.com>2013-03-25 11:13:10 +0100
commit84026301694b98dd08272e613da3497b17023d5c (patch)
tree883a3e71e2680b2d9f96f1262de6198b265ba3c5 /include
parent5acf5ea4bc1535657692c509092caddec3d719ff (diff)
net: iovec checksum calculator
Signed-off-by: Dmitry Fleytman <dmitry@daynix.com> Signed-off-by: Yan Vugenfirer <yan@daynix.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/net/checksum.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/include/net/checksum.h b/include/net/checksum.h
index 3e7b93d094..80203fb6e0 100644
--- a/include/net/checksum.h
+++ b/include/net/checksum.h
@@ -38,4 +38,16 @@ net_raw_checksum(uint8_t *data, int length)
return net_checksum_finish(net_checksum_add(length, data));
}
+/**
+ * net_checksum_add_iov: scatter-gather vector checksumming
+ *
+ * @iov: input scatter-gather array
+ * @iov_cnt: number of array elements
+ * @iov_off: starting iov offset for checksumming
+ * @size: length of data to be checksummed
+ */
+uint32_t net_checksum_add_iov(const struct iovec *iov,
+ const unsigned int iov_cnt,
+ uint32_t iov_off, uint32_t size);
+
#endif /* QEMU_NET_CHECKSUM_H */