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New DLT_IEEE802_15_4_NOFCS for 802.15.4 without FCS. 

Requested by Jon Smirl.
This commit is contained in:
Guy Harris 2010-08-06 14:12:16 -07:00
parent e04170f756
commit 6cb3ad9219
4 changed files with 34 additions and 3 deletions
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11
gencode.c
View File

@ -1588,6 +1588,16 @@ init_linktype(p)
off_nl = 0;
off_nl_nosnap = -1;
return;
case DLT_IEEE802_15_4_NOFCS:
/*
* Currently, only raw "link[N:M]" filtering is supported.
*/
off_linktype = -1;
off_macpl = -1;
off_nl = -1;
off_nl_nosnap = -1;
return;
}
bpf_error("unknown data link type %d", linktype);
/* NOTREACHED */
@ -3511,6 +3521,7 @@ gen_linktype(proto)
case DLT_IEEE802_15_4:
case DLT_IEEE802_15_4_LINUX:
case DLT_IEEE802_15_4_NONASK_PHY:
case DLT_IEEE802_15_4_NOFCS:
bpf_error("IEEE 802.15.4 link-layer type filtering not implemented");
case DLT_IEEE802_16_MAC_CPS_RADIO:

14
pcap-common.c
View File

@ -728,6 +728,13 @@ static const char rcsid[] _U_ =
#define LINKTYPE_IPV4 228
#define LINKTYPE_IPV6 229
/*
* IEEE 802.15.4, exactly as it appears in the spec (no padding, no
* nothing), and with no FCS at the end of the frame; requested by
* Jon Smirl <jonsmirl@gmail.com>.
*/
#define LINKTYPE_IEEE802_15_4_NOFCS 230
static struct linktype_map {
int dlt;
@ -976,8 +983,8 @@ static struct linktype_map {
/* Juniper Voice ISM */
{ DLT_JUNIPER_ISM, LINKTYPE_JUNIPER_ISM },
/* IEEE 802.15.4 exactly as it appears in the spec */
{ DLT_IEEE802_15_4, LINKTYPE_IEEE802_15_4 },
/* IEEE 802.15.4 exactly as it appears in the spec, with FCS */
{ DLT_IEEE802_15_4, LINKTYPE_IEEE802_15_4 },
/* Various link-layer types for SITA */
{ DLT_SITA, LINKTYPE_SITA },
@ -1074,6 +1081,9 @@ static struct linktype_map {
{ DLT_IPV4, LINKTYPE_IPV4 },
{ DLT_IPV6, LINKTYPE_IPV6 },
/* IEEE 802.15.4 exactly as it appears in the spec, without FCS */
{ DLT_IEEE802_15_4_NOFCS, LINKTYPE_IEEE802_15_4_NOFCS },
{ -1, -1 }
};

3
pcap.c
View File

@ -653,7 +653,7 @@ static struct dlt_choice dlt_choices[] = {
DLT_CHOICE(DLT_PPI, "Per-Packet Information"),
DLT_CHOICE(DLT_IEEE802_16_MAC_CPS_RADIO, "IEEE 802.16 MAC Common Part Sublayer plus radiotap header"),
DLT_CHOICE(DLT_JUNIPER_ISM, "Juniper Integrated Service Module"),
DLT_CHOICE(DLT_IEEE802_15_4, "IEEE 802.15.4"),
DLT_CHOICE(DLT_IEEE802_15_4, "IEEE 802.15.4 with FCS"),
DLT_CHOICE(DLT_SITA, "SITA pseudo-header"),
DLT_CHOICE(DLT_ERF, "Endace ERF header"),
DLT_CHOICE(DLT_RAIF1, "Ethernet with u10 Networks pseudo-header"),
@ -673,6 +673,7 @@ static struct dlt_choice dlt_choices[] = {
DLT_CHOICE(DLT_CAN_SOCKETCAN, "CAN-bus with SocketCAN headers"),
DLT_CHOICE(DLT_IPV4, "Raw IPv4"),
DLT_CHOICE(DLT_IPV6, "Raw IPv6"),
DLT_CHOICE(DLT_IEEE802_15_4_NOFCS, "IEEE 802.15.4 without FCS"),
DLT_CHOICE_SENTINEL
};

9
pcap/bpf.h
View File

@ -697,6 +697,8 @@ struct bpf_version {
/*
* IEEE 802.15.4, exactly as it appears in the spec (no padding, no
* nothing); requested by Mikko Saarnivala <mikko.saarnivala@sensinode.com>.
* For this one, we expect the FCS to be present at the end of the frame;
* if the frame has no FCS, DLT_IEEE802_15_4_NOFCS should be used.
*/
#define DLT_IEEE802_15_4 195
@ -960,6 +962,13 @@ struct bpf_version {
#define DLT_IPV4 228
#define DLT_IPV6 229
/*
* IEEE 802.15.4, exactly as it appears in the spec (no padding, no
* nothing), and with no FCS at the end of the frame; requested by
* Jon Smirl <jonsmirl@gmail.com>.
*/
#define DLT_IEEE802_15_4_NOFCS 230
/*
* DLT and savefile link type values are split into a class and
* a member of that class. A class value of 0 indicates a regular