Commit 4f1cc51f authored by Eran Ben Elisha's avatar Eran Ben Elisha Committed by Jakub Kicinski
Browse files

net: flow_dissector: Parse PTP L2 packet header 



Add support for parsing PTP L2 packet header. Such packet consists
of an L2 header (with ethertype of ETH_P_1588), PTP header, body
and an optional suffix.

Signed-off-by: default avatarEran Ben Elisha <eranbe@nvidia.com>
Reviewed-by: default avatarTariq Toukan <tariqt@nvidia.com>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 71854255

net/core/flow_dissector.c

+16 −0
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ 
#include <linux/if_ether.h>

#include <linux/mpls.h>

#include <linux/tcp.h>

#include <linux/ptp_classify.h>

#include <net/flow_dissector.h>

#include <scsi/fc/fc_fcoe.h>

#include <uapi/linux/batadv_packet.h>
@@ -1251,6 +1252,21 @@ bool __skb_flow_dissect(const struct net *net, 
						  &proto, &nhoff, hlen, flags);

		break;



	case htons(ETH_P_1588): {

		struct ptp_header *hdr, _hdr;



		hdr = __skb_header_pointer(skb, nhoff, sizeof(_hdr), data,

					   hlen, &_hdr);

		if (!hdr) {

			fdret = FLOW_DISSECT_RET_OUT_BAD;

			break;

		}



		nhoff += ntohs(hdr->message_length);

		fdret = FLOW_DISSECT_RET_OUT_GOOD;

		break;

	}



	default:

		fdret = FLOW_DISSECT_RET_OUT_BAD;

		break;