net: introduce packet capture support
Add support for capturing ethernet packets and storing
them in memory in PCAP(2.4) format, later to be analyzed by
any PCAP viewer software (IE. Wireshark)
This feature greatly assist debugging network issues such
as detecting dropped packets, packet corruption etc.
Signed-off-by: Ramon Fried <rfried.dev@gmail.com>
Reviewed-by: Alex Marginean <alexm.osslist@gmail.com>
Tested-by: Alex Marginean <alexm.osslist@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/net/eth-uclass.c b/net/eth-uclass.c
index 1d5d2f0..3bd98b0 100644
--- a/net/eth-uclass.c
+++ b/net/eth-uclass.c
@@ -11,6 +11,7 @@
#include <net.h>
#include <dm/device-internal.h>
#include <dm/uclass-internal.h>
+#include <net/pcap.h>
#include "eth_internal.h"
DECLARE_GLOBAL_DATA_PTR;
@@ -344,6 +345,10 @@
/* We cannot completely return the error at present */
debug("%s: send() returned error %d\n", __func__, ret);
}
+#if defined(CONFIG_CMD_PCAP)
+ if (ret >= 0)
+ pcap_post(packet, length, true);
+#endif
return ret;
}