The offset is passed directly to pcap_frame() and allows
any headers that are not part of the frame to
capture to be skipped.
Signed-off-by: Laurent Vivier <lvivier(a)redhat.com>
Reviewed-by: David Gibson <david(a)gibson.dropbear.id.au>
---
pcap.c | 5 +++--
pcap.h | 2 +-
2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/pcap.c b/pcap.c
index e6b5ced4a9f8..6ee6cdfd261a 100644
--- a/pcap.c
+++ b/pcap.c
@@ -138,9 +138,10 @@ void pcap_multiple(const struct iovec *iov, size_t frame_parts,
unsigned int n,
* @iov: Pointer to the array of struct iovec describing the I/O vector
* containing packet data to write, including L2 header
* @iovcnt: Number of buffers (@iov entries)
+ * @offset: Offset of the L2 frame within the full data length
*/
/* cppcheck-suppress unusedFunction */
-void pcap_iov(const struct iovec *iov, size_t iovcnt)
+void pcap_iov(const struct iovec *iov, size_t iovcnt, size_t offset)
{
struct timespec now;
@@ -148,7 +149,7 @@ void pcap_iov(const struct iovec *iov, size_t iovcnt)
return;
clock_gettime(CLOCK_REALTIME, &now);
- pcap_frame(iov, iovcnt, 0, &now);
+ pcap_frame(iov, iovcnt, offset, &now);
}
/**
diff --git a/pcap.h b/pcap.h
index 533923749222..9795f2e8adc5 100644
--- a/pcap.h
+++ b/pcap.h
@@ -9,7 +9,7 @@
void pcap(const char *pkt, size_t l2len);
void pcap_multiple(const struct iovec *iov, size_t frame_parts, unsigned int n,
size_t offset);
-void pcap_iov(const struct iovec *iov, size_t iovcnt);
+void pcap_iov(const struct iovec *iov, size_t iovcnt, size_t offset);
void pcap_init(struct ctx *c);
#endif /* PCAP_H */
--
2.46.0