Use pcap_setdirection instead of filter

diff --git a/ethsock.c b/ethsock.c
index 682b4b2dc4d42ff691ca32f341904c812d1eab29..18774e0df090e8d5c84c52711ced909209dd2c9a 100644 (file)
--- a/ethsock.c
+++ b/ethsock.c
@@ -345,7 +345,7 @@ inline uint8_t *ethsock_get_hwaddr(struct ethsock *sock)
 struct ethsock *ethsock_create(const char *intf, uint16_t protocol)
 {
        char buf[PCAP_ERRBUF_SIZE];
-       struct bpf_program fp;
+       struct bpf_program bpf;
        struct ethsock *sock;
        bool is_bridge;
        int err;
@@ -412,17 +412,22 @@ struct ethsock *ethsock_create(const char *intf, uint16_t protocol)
        }
 #endif
 
-       snprintf(buf, sizeof(buf), "ether proto 0x%04x and not ether src %s",
-                       protocol, mac_to_str(sock->hwaddr));
+       err = pcap_setdirection(sock->pcap, PCAP_D_IN);
+       if (err) {
+               pcap_perror(sock->pcap, "pcap_setdirection");
+               goto cleanup;
+       }
+
+       snprintf(buf, sizeof(buf), "ether proto 0x%04x", protocol);
 
-       err = pcap_compile(sock->pcap, &fp, buf, 0, 0);
+       err = pcap_compile(sock->pcap, &bpf, buf, 0, 0);
        if (err) {
                pcap_perror(sock->pcap, "pcap_compile");
                goto cleanup;
        }
 
-       err = pcap_setfilter(sock->pcap, &fp);
-       pcap_freecode(&fp);
+       err = pcap_setfilter(sock->pcap, &bpf);
+       pcap_freecode(&bpf);
 
        if (err) {
                pcap_perror(sock->pcap, "pcap_setfilter");