diff options
| author | Eran Ben Elisha <eranbe@nvidia.com> | 2021-01-12 21:07:13 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-01-14 18:24:54 -0800 |
| commit | 4f1cc51f34886d645cd3e8fc2915cc9b7a55c3b6 (patch) | |
| tree | ae87c0c4220d19263c64d7895b2ed5f333615065 /net | |
| parent | 71854255820d1a479654bd2e98483129c588c118 (diff) | |
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: Eran Ben Elisha <eranbe@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/flow_dissector.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c index 6f1adba6695f..2d70ded389ae 100644 --- a/net/core/flow_dissector.c +++ b/net/core/flow_dissector.c @@ -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 @@ proto_again: &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; |