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freebsd-dev/cddl/lib/libdtrace/ip.d
Michael Tuexen 7bda966394 Add a dtrace provider for UDP-Lite. 
The dtrace provider for UDP-Lite is modeled after the UDP provider.
This fixes the bug that UDP-Lite packets were triggering the UDP
provider.
Thanks to dteske@ for providing the dwatch module.

Reviewed by:		dteske@, markj@, rrs@
Relnotes:		yes
Differential Revision:	https://reviews.freebsd.org/D16377
2018-07-31 22:56:03 +00:00

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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*
* $FreeBSD$
*/
/*
* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2013 Mark Johnston <markj@freebsd.org>
*/
#pragma D depends_on module kernel
#pragma D depends_on provider ip
/*
* pktinfo is where packet ID info can be made available for deeper
* analysis if packet IDs become supported by the kernel in the future.
* The pkt_addr member is currently always NULL.
*/
typedef struct pktinfo {
uintptr_t pkt_addr;
} pktinfo_t;
/*
* csinfo is where connection state info is made available.
*/
typedef uint32_t zoneid_t;
typedef struct csinfo {
uintptr_t cs_addr;
uint64_t cs_cid;
pid_t cs_pid;
zoneid_t cs_zoneid;
} csinfo_t;
/*
* ipinfo contains common IP info for both IPv4 and IPv6.
*/
typedef struct ipinfo {
uint8_t ip_ver; /* IP version (4, 6) */
uint32_t ip_plength; /* payload length */
string ip_saddr; /* source address */
string ip_daddr; /* destination address */
} ipinfo_t;
/*
* ifinfo contains network interface info.
*/
typedef struct ifinfo {
string if_name; /* interface name */
int8_t if_local; /* is delivered locally */
/*netstackid_t if_ipstack;*/ /* ipstack ID */
uintptr_t if_addr; /* pointer to raw ill_t */
} ifinfo_t;
typedef uint32_t ipaddr_t;
typedef struct {
uint8_t ipha_version_and_hdr_length;
uint8_t ipha_type_of_service;
uint16_t ipha_length;
uint16_t ipha_ident;
uint16_t ipha_fragment_offset_and_flags;
uint8_t ipha_ttl;
uint8_t ipha_protocol;
uint16_t ipha_hdr_checksum;
ipaddr_t ipha_src;
ipaddr_t ipha_dst;
} ipha_t;
/*
* ipv4info is a translated version of the IPv4 header (with raw pointer).
* These values are NULL if the packet is not IPv4.
*/
typedef struct ipv4info {
uint8_t ipv4_ver; /* IP version (4) */
uint8_t ipv4_ihl; /* header length, bytes */
uint8_t ipv4_tos; /* type of service field */
uint16_t ipv4_length; /* length (header + payload) */
uint16_t ipv4_ident; /* identification */
uint8_t ipv4_flags; /* IP flags */
uint16_t ipv4_offset; /* fragment offset */
uint8_t ipv4_ttl; /* time to live */
uint8_t ipv4_protocol; /* next level protocol */
string ipv4_protostr; /* next level protocol, as a string */
uint16_t ipv4_checksum; /* header checksum */
ipaddr_t ipv4_src; /* source address */
ipaddr_t ipv4_dst; /* destination address */
string ipv4_saddr; /* source address, string */
string ipv4_daddr; /* destination address, string */
ipha_t *ipv4_hdr; /* pointer to raw header */
} ipv4info_t;
/*
* ipv6info is a translated version of the IPv6 header (with raw pointer).
* These values are NULL if the packet is not IPv6.
*/
typedef struct in6_addr in6_addr_t;
typedef struct ipv6info {
uint8_t ipv6_ver; /* IP version (6) */
uint8_t ipv6_tclass; /* traffic class */
uint32_t ipv6_flow; /* flow label */
uint16_t ipv6_plen; /* payload length */
uint8_t ipv6_nexthdr; /* next header protocol */
string ipv6_nextstr; /* next header protocol, as a string */
uint8_t ipv6_hlim; /* hop limit */
in6_addr_t *ipv6_src; /* source address */
in6_addr_t *ipv6_dst; /* destination address */
string ipv6_saddr; /* source address, string */
string ipv6_daddr; /* destination address, string */
struct ip6_hdr *ipv6_hdr; /* pointer to raw header */
} ipv6info_t;
#pragma D binding "1.5" IPPROTO_IP
inline short IPPROTO_IP = 0;
#pragma D binding "1.5" IPPROTO_ICMP
inline short IPPROTO_ICMP = 1;
#pragma D binding "1.5" IPPROTO_IGMP
inline short IPPROTO_IGMP = 2;
#pragma D binding "1.5" IPPROTO_IPV4
inline short IPPROTO_IPV4 = 4;
#pragma D binding "1.5" IPPROTO_TCP
inline short IPPROTO_TCP = 6;
#pragma D binding "1.5" IPPROTO_UDP
inline short IPPROTO_UDP = 17;
#pragma D binding "1.5" IPPROTO_IPV6
inline short IPPROTO_IPV6 = 41;
#pragma D binding "1.5" IPPROTO_ROUTING
inline short IPPROTO_ROUTING = 43;
#pragma D binding "1.5" IPPROTO_FRAGMENT
inline short IPPROTO_FRAGMENT = 44;
#pragma D binding "1.5" IPPROTO_RSVP
inline short IPPROTO_RSVP = 46;
#pragma D binding "1.5" IPPROTO_GRE
inline short IPPROTO_GRE = 47;
#pragma D binding "1.5" IPPROTO_ESP
inline short IPPROTO_ESP = 50;
#pragma D binding "1.5" IPPROTO_AH
inline short IPPROTO_AH = 51;
#pragma D binding "1.5" IPPROTO_MOBILE
inline short IPPROTO_MOBILE = 55;
#pragma D binding "1.5" IPPROTO_ICMPV6
inline short IPPROTO_ICMPV6 = 58;
#pragma D binding "1.5" IPPROTO_DSTOPTS
inline short IPPROTO_DSTOPTS = 60;
#pragma D binding "1.5" IPPROTO_ETHERIP
inline short IPPROTO_ETHERIP = 97;
#pragma D binding "1.5" IPPROTO_PIM
inline short IPPROTO_PIM = 103;
#pragma D binding "1.5" IPPROTO_IPCOMP
inline short IPPROTO_IPCOMP = 108;
#pragma D binding "1.5" IPPROTO_SCTP
inline short IPPROTO_SCTP = 132;
#pragma D binding "1.5" IPPROTO_RAW
inline short IPPROTO_RAW = 255;
#pragma D binding "1.13" IPPROTO_UDPLITE
inline short IPPROTO_UDPLITE = 136;
inline uint8_t INP_IPV4 = 0x01;
inline uint8_t INP_IPV6 = 0x02;
#pragma D binding "1.5" protocols
inline string protocols[int proto] =
proto == IPPROTO_IP ? "IP" :
proto == IPPROTO_ICMP ? "ICMP" :
proto == IPPROTO_IGMP ? "IGMP" :
proto == IPPROTO_IPV4 ? "IPV4" :
proto == IPPROTO_TCP ? "TCP" :
proto == IPPROTO_UDP ? "UDP" :
proto == IPPROTO_IPV6 ? "IPV6" :
proto == IPPROTO_ROUTING ? "ROUTING" :
proto == IPPROTO_FRAGMENT ? "FRAGMENT" :
proto == IPPROTO_RSVP ? "RSVP" :
proto == IPPROTO_GRE ? "GRE" :
proto == IPPROTO_ESP ? "ESP" :
proto == IPPROTO_AH ? "AH" :
proto == IPPROTO_MOBILE ? "MOBILE" :
proto == IPPROTO_ICMPV6 ? "ICMPV6" :
proto == IPPROTO_DSTOPTS ? "DSTOPTS" :
proto == IPPROTO_ETHERIP ? "ETHERIP" :
proto == IPPROTO_PIM ? "PIM" :
proto == IPPROTO_IPCOMP ? "IPCOMP" :
proto == IPPROTO_SCTP ? "SCTP" :
proto == IPPROTO_UDPLITE ? "UDPLITE" :
proto == IPPROTO_RAW ? "RAW" :
"<unknown>";
/*
* This field is always NULL according to the current definition of the ip
* probes.
*/
#pragma D binding "1.5" translator
translator pktinfo_t < void *p > {
pkt_addr = NULL;
};
#pragma D binding "1.5" translator
translator csinfo_t < void *p > {
cs_addr = NULL;
cs_cid = (uint64_t)p;
cs_pid = 0;
cs_zoneid = 0;
};
#pragma D binding "1.6.3" translator
translator csinfo_t < struct inpcb *p > {
cs_addr = NULL;
cs_cid = (uint64_t)p;
cs_pid = 0; /* XXX */
cs_zoneid = 0;
};
#pragma D binding "1.5" translator
translator ipinfo_t < uint8_t *p > {
ip_ver = p == NULL ? 0 : ((struct ip *)p)->ip_v;
ip_plength = p == NULL ? 0 :
((struct ip *)p)->ip_v == 4 ?
ntohs(((struct ip *)p)->ip_len) - (((struct ip *)p)->ip_hl << 2):
ntohs(((struct ip6_hdr *)p)->ip6_ctlun.ip6_un1.ip6_un1_plen);
ip_saddr = p == NULL ? "<unknown>" :
((struct ip *)p)->ip_v == 4 ?
inet_ntoa(&((struct ip *)p)->ip_src.s_addr) :
inet_ntoa6(&((struct ip6_hdr *)p)->ip6_src);
ip_daddr = p == NULL ? "<unknown>" :
((struct ip *)p)->ip_v == 4 ?
inet_ntoa(&((struct ip *)p)->ip_dst.s_addr) :
inet_ntoa6(&((struct ip6_hdr *)p)->ip6_dst);
};
#pragma D binding "1.13" translator
translator ipinfo_t < struct mbuf *m > {
ip_ver = m == NULL ? 0 : ((struct ip *)m->m_data)->ip_v;
ip_plength = m == NULL ? 0 :
((struct ip *)m->m_data)->ip_v == 4 ?
ntohs(((struct ip *)m->m_data)->ip_len) -
(((struct ip *)m->m_data)->ip_hl << 2):
ntohs(((struct ip6_hdr *)m->m_data)->ip6_ctlun.ip6_un1.ip6_un1_plen);
ip_saddr = m == NULL ? "<unknown>" :
((struct ip *)m->m_data)->ip_v == 4 ?
inet_ntoa(&((struct ip *)m->m_data)->ip_src.s_addr) :
inet_ntoa6(&((struct ip6_hdr *)m->m_data)->ip6_src);
ip_daddr = m == NULL ? "<unknown>" :
((struct ip *)m->m_data)->ip_v == 4 ?
inet_ntoa(&((struct ip *)m->m_data)->ip_dst.s_addr) :
inet_ntoa6(&((struct ip6_hdr *)m->m_data)->ip6_dst);
};
#pragma D binding "1.5" IFF_LOOPBACK
inline int IFF_LOOPBACK = 0x8;
#pragma D binding "1.5" translator
translator ifinfo_t < struct ifnet *p > {
if_name = p->if_xname;
if_local = (p->if_flags & IFF_LOOPBACK) == 0 ? 0 : 1;
if_addr = (uintptr_t)p;
};
#pragma D binding "1.5" translator
translator ipv4info_t < struct ip *p > {
ipv4_ver = p == NULL ? 0 : p->ip_v;
ipv4_ihl = p == NULL ? 0 : p->ip_hl;
ipv4_tos = p == NULL ? 0 : p->ip_tos;
ipv4_length = p == NULL ? 0 : ntohs(p->ip_len);
ipv4_ident = p == NULL ? 0 : ntohs(p->ip_id);
ipv4_flags = p == NULL ? 0 : (ntohs(p->ip_off) & 0xe000) >> 8;
ipv4_offset = p == NULL ? 0 : ntohs(p->ip_off) & 0x1fff;
ipv4_ttl = p == NULL ? 0 : p->ip_ttl;
ipv4_protocol = p == NULL ? 0 : p->ip_p;
ipv4_protostr = p == NULL ? "<null>" : protocols[p->ip_p];
ipv4_checksum = p == NULL ? 0 : ntohs(p->ip_sum);
ipv4_src = p == NULL ? 0 : (ipaddr_t)ntohl(p->ip_src.s_addr);
ipv4_dst = p == NULL ? 0 : (ipaddr_t)ntohl(p->ip_dst.s_addr);
ipv4_saddr = p == NULL ? 0 : inet_ntoa(&p->ip_src.s_addr);
ipv4_daddr = p == NULL ? 0 : inet_ntoa(&p->ip_dst.s_addr);
ipv4_hdr = (ipha_t *)p;
};
#pragma D binding "1.5" translator
translator ipv6info_t < struct ip6_hdr *p > {
ipv6_ver = p == NULL ? 0 : (ntohl(p->ip6_ctlun.ip6_un1.ip6_un1_flow) & 0xf0000000) >> 28;
ipv6_tclass = p == NULL ? 0 : (ntohl(p->ip6_ctlun.ip6_un1.ip6_un1_flow) & 0x0ff00000) >> 20;
ipv6_flow = p == NULL ? 0 : ntohl(p->ip6_ctlun.ip6_un1.ip6_un1_flow) & 0x000fffff;
ipv6_plen = p == NULL ? 0 : ntohs(p->ip6_ctlun.ip6_un1.ip6_un1_plen);
ipv6_nexthdr = p == NULL ? 0 : p->ip6_ctlun.ip6_un1.ip6_un1_nxt;
ipv6_nextstr = p == NULL ? "<null>" : protocols[p->ip6_ctlun.ip6_un1.ip6_un1_nxt];
ipv6_hlim = p == NULL ? 0 : p->ip6_ctlun.ip6_un1.ip6_un1_hlim;
ipv6_src = p == NULL ? 0 : (in6_addr_t *)&p->ip6_src;
ipv6_dst = p == NULL ? 0 : (in6_addr_t *)&p->ip6_dst;
ipv6_saddr = p == NULL ? 0 : inet_ntoa6(&p->ip6_src);
ipv6_daddr = p == NULL ? 0 : inet_ntoa6(&p->ip6_dst);
ipv6_hdr = p;
};
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