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authorDmitry Fleytman <dmitry.fleytman@ravellosystems.com>2016-06-01 11:23:41 +0300
committerJason Wang <jasowang@redhat.com>2016-06-02 10:42:28 +0800
commiteb700029c7836798046191d62d595363d92c84d4 (patch)
tree7c6b3b8c3de169297291adba1ad959bc87d75a5b /net/checksum.c
parent66409b7c8bd0ebb075a6af8cbc7846fc0a95107d (diff)
net_pkt: Extend packet abstraction as required by e1000e functionality
This patch extends the TX/RX packet abstractions with features that will be used by the e1000e device implementation. Changes are: 1. Support iovec lists for RX buffers 2. Deeper RX packets parsing 3. Loopback option for TX packets 4. Extended VLAN headers handling 5. RSS processing for RX packets Signed-off-by: Dmitry Fleytman <dmitry.fleytman@ravellosystems.com> Signed-off-by: Leonid Bloch <leonid.bloch@ravellosystems.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'net/checksum.c')
-rw-r--r--net/checksum.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/net/checksum.c b/net/checksum.c
index d0fa424cc1..196aaa3459 100644
--- a/net/checksum.c
+++ b/net/checksum.c
@@ -95,12 +95,11 @@ void net_checksum_calculate(uint8_t *data, int length)
uint32_t
net_checksum_add_iov(const struct iovec *iov, const unsigned int iov_cnt,
- uint32_t iov_off, uint32_t size)
+ uint32_t iov_off, uint32_t size, uint32_t csum_offset)
{
size_t iovec_off, buf_off;
unsigned int i;
uint32_t res = 0;
- uint32_t seq = 0;
iovec_off = 0;
buf_off = 0;
@@ -109,8 +108,8 @@ net_checksum_add_iov(const struct iovec *iov, const unsigned int iov_cnt,
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;
+ res += net_checksum_add_cont(len, chunk_buf, csum_offset);
+ csum_offset += len;
buf_off += len;
iov_off += len;