Add an option to trace all packets send/received. This can be helpful when debugging protocol issues, as the packets can then be imported into wireshark [1] and analyzed further.
[1] https://www.wireshark.org/docs/wsug_html_chunked/ChIOImportSection.html Signed-off-by: Sean Anderson <sean...@gmail.com> --- include/net.h | 4 ++++ net/net.c | 3 +++ 2 files changed, 7 insertions(+) diff --git a/include/net.h b/include/net.h index e254df7d7f4..e63a946002d 100644 --- a/include/net.h +++ b/include/net.h @@ -16,6 +16,7 @@ #include <asm/cache.h> #include <asm/byteorder.h> /* for nton* / ntoh* stuff */ #include <env.h> +#include <hexdump.h> #include <log.h> #include <time.h> #include <linux/if_ether.h> @@ -29,6 +30,7 @@ struct udevice; #define DEBUG_DEV_PKT 0 /* Packets or info directed to the device */ #define DEBUG_NET_PKT 0 /* Packets on info on the network at large */ #define DEBUG_INT_STATE 0 /* Internal network state changes */ +#define DEBUG_NET_PKT_TRACE 0 /* Trace all packet data */ /* * The number of receive packet buffers, and the required packet buffer @@ -640,6 +642,8 @@ uchar * net_get_async_tx_pkt_buf(void); /* Transmit a packet */ static inline void net_send_packet(uchar *pkt, int len) { + if (DEBUG_NET_PKT_TRACE) + print_hex_dump_bytes("tx: ", DUMP_PREFIX_OFFSET, pkt, len); /* Currently no way to return errors from eth_send() */ (void) eth_send(pkt, len); } diff --git a/net/net.c b/net/net.c index 43abbac7c32..53eb9ef1324 100644 --- a/net/net.c +++ b/net/net.c @@ -1201,6 +1201,9 @@ void net_process_received_packet(uchar *in_packet, int len) ushort cti = 0, vlanid = VLAN_NONE, myvlanid, mynvlanid; debug_cond(DEBUG_NET_PKT, "packet received\n"); + if (DEBUG_NET_PKT_TRACE) + print_hex_dump_bytes("rx: ", DUMP_PREFIX_OFFSET, in_packet, + len); #if defined(CONFIG_CMD_PCAP) pcap_post(in_packet, len, false); -- 2.37.1
