forked from Imagelibrary/rtems
Partial update from FreeBSD.
This commit is contained in:
Ralf Corsepius
@@ -27,7 +27,7 @@
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* SUCH DAMAGE.
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*
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* @(#)ip_icmp.c 8.2 (Berkeley) 1/4/94
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* $FreeBSD: src/sys/netinet/ip_icmp.c,v 1.98 2005/01/07 01:45:44 imp Exp $
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* $FreeBSD: src/sys/netinet/ip_icmp.c,v 1.101 2005/05/04 13:23:54 andre Exp $
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*/
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/*
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@@ -95,7 +95,6 @@ int icmpprintfs = 0;
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static void icmp_reflect(struct mbuf *);
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static void icmp_send(struct mbuf *, struct mbuf *);
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static int ip_next_mtu(int, int);
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extern struct protosw inetsw[];
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@@ -692,20 +691,19 @@ iptime()
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return (htonl(t));
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}
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#if 1
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/*
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* Return the next larger or smaller MTU plateau (table from RFC 1191)
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* given current value MTU. If DIR is less than zero, a larger plateau
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* is returned; otherwise, a smaller value is returned.
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*/
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static int
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int
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ip_next_mtu(mtu, dir)
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int mtu;
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int dir;
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{
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static int mtutab[] = {
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65535, 32000, 17914, 8166, 4352, 2002, 1492, 1006, 508, 296,
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68, 0
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65535, 32000, 17914, 8166, 4352, 2002, 1492, 1280, 1006, 508,
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296, 68, 0
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};
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int i;
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@@ -730,4 +728,3 @@ ip_next_mtu(mtu, dir)
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}
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}
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}
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#endif
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@@ -127,20 +127,28 @@ struct mbuf {
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#define m_pktdat M_dat.MH.MH_dat.MH_databuf
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#define m_dat M_dat.M_databuf
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/* mbuf flags */
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/*
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* mbuf flags.
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*/
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#define M_EXT 0x0001 /* has associated external storage */
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#define M_PKTHDR 0x0002 /* start of record */
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#define M_EOR 0x0004 /* end of record */
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#define M_PROTO1 0x0008 /* protocol-specific */
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/* mbuf pkthdr flags, also in m_flags */
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/*
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* mbuf pkthdr flags (also stored in m_flags).
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*/
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#define M_BCAST 0x0100 /* send/received as link-level broadcast */
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#define M_MCAST 0x0200 /* send/received as link-level multicast */
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/* flags copied when copying m_pkthdr */
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/*
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* Flags copied when copying m_pkthdr.
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*/
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#define M_COPYFLAGS (M_PKTHDR|M_EOR|M_PROTO1|M_BCAST|M_MCAST)
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/* mbuf types */
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/*
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* mbuf types.
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*/
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#define MT_FREE 0 /* should be on free list */
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#define MT_DATA 1 /* dynamic (data) allocation */
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#define MT_HEADER 2 /* packet header */
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@@ -157,6 +165,21 @@ struct mbuf {
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#define MT_CONTROL 14 /* extra-data protocol message */
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#define MT_OOBDATA 15 /* expedited data */
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/*
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* General mbuf allocator statistics structure.
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*/
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struct mbstat {
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u_long m_mbufs; /* mbufs obtained from page pool */
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u_long m_clusters; /* clusters obtained from page pool */
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u_long m_spare; /* spare field */
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u_long m_clfree; /* free clusters */
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u_long m_drops; /* times failed to find space */
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u_long m_wait; /* times waited for space */
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u_long m_drain; /* times drained protocols for space */
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u_short m_mtypes[256]; /* type specific mbuf allocations */
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};
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/* flags to m_get/MGET */
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#define M_DONTWAIT M_NOWAIT
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#define M_WAIT M_WAITOK
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@@ -316,14 +339,17 @@ union mcluster {
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* Set the m_data pointer of a newly-allocated mbuf (m_get/MGET) to place
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* an object of the specified size at the end of the mbuf, longword aligned.
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*/
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#define M_ALIGN(m, len) \
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{ (m)->m_data += (MLEN - (len)) &~ (sizeof(long) - 1); }
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#define M_ALIGN(m, len) do { \
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(m)->m_data += (MLEN - (len)) & ~(sizeof(long) - 1); \
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} while (0)
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/*
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* As above, for mbufs allocated with m_gethdr/MGETHDR
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* or initialized by M_COPY_PKTHDR.
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*/
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#define MH_ALIGN(m, len) \
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{ (m)->m_data += (MHLEN - (len)) &~ (sizeof(long) - 1); }
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#define MH_ALIGN(m, len) do { \
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(m)->m_data += (MHLEN - (len)) & ~(sizeof(long) - 1); \
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} while (0)
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/*
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* Compute the amount of space available
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@@ -359,32 +385,21 @@ union mcluster {
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(m)->m_pkthdr.len += (plen); \
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}
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/* change mbuf to new type */
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/*
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* Change mbuf to new type.
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* This is a relatively expensive operation and should be avoided.
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*/
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#define MCHTYPE(m, t) { \
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MBUFLOCK(mbstat.m_mtypes[(m)->m_type]--; mbstat.m_mtypes[t]++;) \
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(m)->m_type = t;\
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}
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/* length to m_copy to copy all */
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/* Length to m_copy to copy all. */
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#define M_COPYALL 1000000000
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/* compatibility with 4.3 */
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/* Compatibility with 4.3. */
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#define m_copy(m, o, l) m_copym((m), (o), (l), M_DONTWAIT)
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/*
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* Mbuf statistics.
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*/
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struct mbstat {
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u_long m_mbufs; /* mbufs obtained from page pool */
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u_long m_clusters; /* clusters obtained from page pool */
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u_long m_spare; /* spare field */
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u_long m_clfree; /* free clusters */
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u_long m_drops; /* times failed to find space */
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u_long m_wait; /* times waited for space */
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u_long m_drain; /* times drained protocols for space */
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u_short m_mtypes[256]; /* type specific mbuf allocations */
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};
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#ifdef _KERNEL
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extern struct mbuf *mbutl; /* virtual address of mclusters */
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extern char *mclrefcnt; /* cluster reference counts */
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@@ -397,7 +412,6 @@ extern int max_linkhdr; /* largest link-level header */
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extern int max_protohdr; /* largest protocol header */
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extern int max_hdr; /* largest link+protocol header */
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extern int max_datalen; /* MHLEN - max_hdr */
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extern int mbtypes[]; /* XXX */
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struct mbuf *m_copym(struct mbuf *, int, int, int);
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struct mbuf *m_copypacket(struct mbuf *, int);
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@@ -421,29 +435,6 @@ int m_copydata(const struct mbuf *, int, int, caddr_t);
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void m_freem(struct mbuf *);
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void m_reclaim(void);
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#ifdef MBTYPES
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int mbtypes[] = { /* XXX */
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M_FREE, /* MT_FREE 0 should be on free list */
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M_MBUF, /* MT_DATA 1 dynamic (data) allocation */
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M_MBUF, /* MT_HEADER 2 packet header */
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M_SOCKET, /* MT_SOCKET 3 socket structure */
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M_PCB, /* MT_PCB 4 protocol control block */
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M_RTABLE, /* MT_RTABLE 5 routing tables */
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M_HTABLE, /* MT_HTABLE 6 IMP host tables */
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0, /* MT_ATABLE 7 address resolution tables */
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M_MBUF, /* MT_SONAME 8 socket name */
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0, /* 9 */
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M_SOOPTS, /* MT_SOOPTS 10 socket options */
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M_FTABLE, /* MT_FTABLE 11 fragment reassembly header */
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M_MBUF, /* MT_RIGHTS 12 access rights */
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M_IFADDR, /* MT_IFADDR 13 interface address */
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M_MBUF, /* MT_CONTROL 14 extra-data protocol message */
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M_MBUF, /* MT_OOBDATA 15 expedited data */
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#ifdef DATAKIT
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25, 26, 27, 28, 29, 30, 31, 32 /* datakit ugliness */
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#endif
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};
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#endif
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#endif
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#endif /* _KERNEL */
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#endif /* !_SYS_MBUF_H_ */
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