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Diffstat (limited to 'pcap.c')
-rw-r--r--pcap.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/pcap.c b/pcap.c
index a95a5ee..e5b8b72 100644
--- a/pcap.c
+++ b/pcap.c
@@ -41,7 +41,7 @@
static int pcap_fd = -1;
/* See pcap.h from libpcap, or pcap-savefile(5) */
-static struct {
+static const struct {
uint32_t magic;
#define PCAP_MAGIC 0xa1b2c3d4
@@ -74,7 +74,7 @@ struct pcap_pkthdr {
* @pkt: Pointer to data buffer, including L2 headers
* @len: L2 packet length
*/
-void pcap(char *pkt, size_t len)
+void pcap(const char *pkt, size_t len)
{
struct pcap_pkthdr h;
struct timeval tv;
@@ -95,7 +95,7 @@ void pcap(char *pkt, size_t len)
* pcapm() - Capture multiple frames from message header to pcap file
* @mh: Pointer to sendmsg() message header buffer
*/
-void pcapm(struct msghdr *mh)
+void pcapm(const struct msghdr *mh)
{
struct pcap_pkthdr h;
struct iovec *iov;
@@ -130,7 +130,7 @@ fail:
* pcapm() - Capture multiple frames from multiple message headers to pcap file
* @mmh: Pointer to first sendmmsg() header
*/
-void pcapmm(struct mmsghdr *mmh, unsigned int vlen)
+void pcapmm(const struct mmsghdr *mmh, unsigned int vlen)
{
struct pcap_pkthdr h;
struct iovec *iov;
@@ -145,7 +145,7 @@ void pcapmm(struct mmsghdr *mmh, unsigned int vlen)
h.tv_usec = tv.tv_usec;
for (i = 0; i < vlen; i++) {
- struct msghdr *mh = &mmh[i].msg_hdr;
+ const struct msghdr *mh = &mmh[i].msg_hdr;
for (j = 0; j < mh->msg_iovlen; j++) {
iov = &mh->msg_iov[j];