From 804a40a2c8969ef5c8036f75e20937f04ff845ba Mon Sep 17 00:00:00 2001
From: "Joseph C. Lehner" <joseph.c.lehner@gmail.com>
Date: Sun, 16 Apr 2017 15:51:14 +0200
Subject: [PATCH] Revert "Use pcap_setdirection instead of filter"
This reverts commit 590e7a079f097cabe19705aa8b22f486e1ca2d44.
Fixes #5.
---
ethsock.c | 17 ++++++-----------
1 file changed, 6 insertions(+), 11 deletions(-)
diff --git a/ethsock.c b/ethsock.c
index 685e34a..d8a7326 100644
--- a/ethsock.c
+++ b/ethsock.c
@@ -494,7 +494,7 @@ 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 bpf;
+ struct bpf_program fp;
struct ethsock *sock;
bool is_bridge;
int err;
@@ -561,22 +561,17 @@ struct ethsock *ethsock_create(const char *intf, uint16_t protocol)
}
#endif
- 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);
+ snprintf(buf, sizeof(buf), "ether proto 0x%04x and not ether src %s",
+ protocol, mac_to_str(sock->hwaddr));
- err = pcap_compile(sock->pcap, &bpf, buf, 0, 0);
+ err = pcap_compile(sock->pcap, &fp, buf, 0, 0);
if (err) {
pcap_perror(sock->pcap, "pcap_compile");
goto cleanup;
}
- err = pcap_setfilter(sock->pcap, &bpf);
- pcap_freecode(&bpf);
+ err = pcap_setfilter(sock->pcap, &fp);
+ pcap_freecode(&fp);
if (err) {
pcap_perror(sock->pcap, "pcap_setfilter");
--
2.25.1