[PATCH 3/4] packet: pkt_cast_hdrp can take an offset to pkt_buf

[Nikola Pajkovsky]

Signed-off-by: Nikola Pajkovsky <npajkovs(a)redhat.com&gt;
---
 src/packet.c |    4 ++--
 src/packet.h |    6 +++---
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/packet.c b/src/packet.c
index 60d40b5..fbd94f1 100644
--- a/src/packet.c
+++ b/src/packet.c
@@ -46,7 +46,7 @@ static int packet_adjust(struct pkt_hdr *pkt)
 	switch (pkt->pkt_hatype) {
 	case ARPHRD_ETHER:
 	case ARPHRD_LOOPBACK:
-		pkt_cast_hdrp(ethhdr, pkt);
+		pkt_cast_hdrp(ethhdr, pkt, 0);
 		pkt->pkt_payload = pkt->pkt_buf;
 		pkt->pkt_payload += ETH_HLEN;
 		pkt->pkt_len -= ETH_HLEN;
@@ -76,7 +76,7 @@ static int packet_adjust(struct pkt_hdr *pkt)
 		pkt->pkt_len -= 4;
 		break;
 	case ARPHRD_FDDI:
-		pkt_cast_hdrp(fddihdr, pkt);
+		pkt_cast_hdrp(fddihdr, pkt, 0);
 		pkt->pkt_payload = pkt->pkt_buf;
 		pkt->pkt_payload += sizeof(struct fddihdr);
 		pkt->pkt_len -= sizeof(struct fddihdr);
diff --git a/src/packet.h b/src/packet.h
index dea4417..72a7062 100644
--- a/src/packet.h
+++ b/src/packet.h
@@ -38,9 +38,9 @@ struct pkt_hdr {
 	char		pkt_buf[MAX_PACKET_SIZE];
 };
 
-#define pkt_cast_hdrp(hdr, pkt)				\
-	do {						\
-		pkt->hdr = (struct hdr *) pkt->pkt_buf;	\
+#define pkt_cast_hdrp(hdr, pkt, off)				\
+	do {							\
+		pkt->hdr = (struct hdr *) pkt->pkt_buf + off;	\
 	} while (0)
 
 
-- 
1.7.10.2