diff options
Diffstat (limited to 'freebsd/sys/sys/mbuf.h')
-rw-r--r-- | freebsd/sys/sys/mbuf.h | 94 |
1 files changed, 62 insertions, 32 deletions
diff --git a/freebsd/sys/sys/mbuf.h b/freebsd/sys/sys/mbuf.h index ec98aaec..4a91b794 100644 --- a/freebsd/sys/sys/mbuf.h +++ b/freebsd/sys/sys/mbuf.h @@ -1,4 +1,6 @@ /*- + * SPDX-License-Identifier: BSD-3-Clause + * * Copyright (c) 1982, 1986, 1988, 1993 * The Regents of the University of California. * All rights reserved. @@ -154,14 +156,20 @@ struct pkthdr { /* Layer crossing persistent information. */ uint32_t flowid; /* packet's 4-tuple system */ - uint64_t csum_flags; /* checksum and offload features */ + uint32_t csum_flags; /* checksum and offload features */ uint16_t fibnum; /* this packet should use this fib */ uint8_t cosqos; /* class/quality of service */ uint8_t rsstype; /* hash type */ - uint8_t l2hlen; /* layer 2 header length */ - uint8_t l3hlen; /* layer 3 header length */ - uint8_t l4hlen; /* layer 4 header length */ - uint8_t l5hlen; /* layer 5 header length */ + union { + uint64_t rcv_tstmp; /* timestamp in ns */ + struct { + uint8_t l2hlen; /* layer 2 hdr len */ + uint8_t l3hlen; /* layer 3 hdr len */ + uint8_t l4hlen; /* layer 4 hdr len */ + uint8_t l5hlen; /* layer 5 hdr len */ + uint32_t spare; + }; + }; union { uint8_t eight[8]; uint16_t sixteen[4]; @@ -197,17 +205,33 @@ struct pkthdr { * Compile-time assertions in uipc_mbuf.c test these values to ensure that * they are correct. */ +typedef void m_ext_free_t(struct mbuf *); struct m_ext { union { - volatile u_int ext_count; /* value of ref count info */ - volatile u_int *ext_cnt; /* pointer to ref count info */ + /* + * If EXT_FLAG_EMBREF is set, then we use refcount in the + * mbuf, the 'ext_count' member. Otherwise, we have a + * shadow copy and we use pointer 'ext_cnt'. The original + * mbuf is responsible to carry the pointer to free routine + * and its arguments. They aren't copied into shadows in + * mb_dupcl() to avoid dereferencing next cachelines. + */ + volatile u_int ext_count; + volatile u_int *ext_cnt; }; - caddr_t ext_buf; /* start of buffer */ + char *ext_buf; /* start of buffer */ uint32_t ext_size; /* size of buffer, for ext_free */ uint32_t ext_type:8, /* type of external storage */ ext_flags:24; /* external storage mbuf flags */ - void (*ext_free) /* free routine if not the usual */ - (struct mbuf *, void *, void *); + /* + * Fields below store the free context for the external storage. + * They are valid only in the refcount carrying mbuf, the one with + * EXT_FLAG_EMBREF flag, with exclusion for EXT_EXTREF type, where + * the free context is copied into all mbufs that use same external + * storage. + */ +#define m_ext_copylen offsetof(struct m_ext, ext_free) + m_ext_free_t *ext_free; /* free routine if not the usual */ void *ext_arg1; /* optional argument pointer */ void *ext_arg2; /* optional argument pointer */ }; @@ -277,6 +301,10 @@ struct mbuf { #define M_VLANTAG 0x00000080 /* ether_vtag is valid */ #define M_UNUSED_8 0x00000100 /* --available-- */ #define M_NOFREE 0x00000200 /* do not free mbuf, embedded in cluster */ +#define M_TSTMP 0x00000400 /* rcv_tstmp field is valid */ +#define M_TSTMP_HPREC 0x00000800 /* rcv_tstmp is high-prec, typically + hw-stamped on port (useful for IEEE 1588 + and 802.1AS) */ #define M_PROTO1 0x00001000 /* protocol-specific */ #define M_PROTO2 0x00002000 /* protocol-specific */ @@ -304,15 +332,15 @@ struct mbuf { * Flags preserved when copying m_pkthdr. */ #define M_COPYFLAGS \ - (M_PKTHDR|M_EOR|M_RDONLY|M_BCAST|M_MCAST|M_PROMISC|M_VLANTAG| \ - M_PROTOFLAGS) + (M_PKTHDR|M_EOR|M_RDONLY|M_BCAST|M_MCAST|M_PROMISC|M_VLANTAG|M_TSTMP| \ + M_TSTMP_HPREC|M_PROTOFLAGS) /* * Mbuf flag description for use with printf(9) %b identifier. */ #define M_FLAG_BITS \ "\20\1M_EXT\2M_PKTHDR\3M_EOR\4M_RDONLY\5M_BCAST\6M_MCAST" \ - "\7M_PROMISC\10M_VLANTAG" + "\7M_PROMISC\10M_VLANTAG\13M_TSTMP\14M_TSTMP_HPREC" #define M_FLAG_PROTOBITS \ "\15M_PROTO1\16M_PROTO2\17M_PROTO3\20M_PROTO4\21M_PROTO5" \ "\22M_PROTO6\23M_PROTO7\24M_PROTO8\25M_PROTO9\26M_PROTO10" \ @@ -412,9 +440,6 @@ struct mbuf { #define EXT_JUMBO16 5 /* jumbo cluster 16184 bytes */ #define EXT_PACKET 6 /* mbuf+cluster from packet zone */ #define EXT_MBUF 7 /* external mbuf reference */ -#ifndef __rtems__ -#define EXT_SFBUF_NOCACHE 8 /* sendfile(2)'s sf_buf not to be cached */ -#endif /* __rtems__ */ #define EXT_VENDOR1 224 /* for vendor-internal use */ #define EXT_VENDOR2 225 /* for vendor-internal use */ @@ -440,10 +465,10 @@ struct mbuf { #define EXT_FLAG_NOFREE 0x000010 /* don't free mbuf to pool, notyet */ -#define EXT_FLAG_VENDOR1 0x010000 /* for vendor-internal use */ -#define EXT_FLAG_VENDOR2 0x020000 /* for vendor-internal use */ -#define EXT_FLAG_VENDOR3 0x040000 /* for vendor-internal use */ -#define EXT_FLAG_VENDOR4 0x080000 /* for vendor-internal use */ +#define EXT_FLAG_VENDOR1 0x010000 /* These flags are vendor */ +#define EXT_FLAG_VENDOR2 0x020000 /* or submodule specific, */ +#define EXT_FLAG_VENDOR3 0x040000 /* not used by mbuf code. */ +#define EXT_FLAG_VENDOR4 0x080000 /* Set/read by submodule. */ #define EXT_FLAG_EXP1 0x100000 /* for experimental use */ #define EXT_FLAG_EXP2 0x200000 /* for experimental use */ @@ -460,12 +485,6 @@ struct mbuf { "\30EXT_FLAG_EXP4" /* - * External reference/free functions. - */ -void sf_ext_free(void *, void *); -void sf_ext_free_nocache(void *, void *); - -/* * Flags indicating checksum, segmentation and other offload work to be * done, or already done, by hardware or lower layers. It is split into * separate inbound and outbound flags. @@ -614,9 +633,8 @@ struct mbuf *m_devget(char *, int, int, struct ifnet *, void (*)(char *, caddr_t, u_int)); struct mbuf *m_dup(const struct mbuf *, int); int m_dup_pkthdr(struct mbuf *, const struct mbuf *, int); -void m_extadd(struct mbuf *, caddr_t, u_int, - void (*)(struct mbuf *, void *, void *), void *, void *, - int, int); +void m_extadd(struct mbuf *, char *, u_int, m_ext_free_t, + void *, void *, int, int); u_int m_fixhdr(struct mbuf *); struct mbuf *m_fragment(struct mbuf *, int, int); void m_freem(struct mbuf *); @@ -671,8 +689,8 @@ m_gettype(int size) * Associated an external reference counted buffer with an mbuf. */ static __inline void -m_extaddref(struct mbuf *m, caddr_t buf, u_int size, u_int *ref_cnt, - void (*freef)(struct mbuf *, void *, void *), void *arg1, void *arg2) +m_extaddref(struct mbuf *m, char *buf, u_int size, u_int *ref_cnt, + m_ext_free_t freef, void *arg1, void *arg2) { KASSERT(ref_cnt != NULL, ("%s: ref_cnt not provided", __func__)); @@ -869,7 +887,7 @@ m_extrefcnt(struct mbuf *m) #define MGETHDR(m, how, type) ((m) = m_gethdr((how), (type))) #define MCLGET(m, how) m_clget((m), (how)) #define MEXTADD(m, buf, size, free, arg1, arg2, flags, type) \ - m_extadd((m), (caddr_t)(buf), (size), (free), (arg1), (arg2), \ + m_extadd((m), (char *)(buf), (size), (free), (arg1), (arg2), \ (flags), (type)) #define m_getm(m, len, how, type) \ m_getm2((m), (len), (how), (type), M_PKTHDR) @@ -1345,5 +1363,17 @@ mbufq_concat(struct mbufq *mq_dst, struct mbufq *mq_src) mq_src->mq_len = 0; } +#ifdef _SYS_TIMESPEC_H_ +static inline void +mbuf_tstmp2timespec(struct mbuf *m, struct timespec *ts) +{ + + KASSERT((m->m_flags & M_PKTHDR) != 0, ("mbuf %p no M_PKTHDR", m)); + KASSERT((m->m_flags & M_TSTMP) != 0, ("mbuf %p no M_TSTMP", m)); + ts->tv_sec = m->m_pkthdr.rcv_tstmp / 1000000000; + ts->tv_nsec = m->m_pkthdr.rcv_tstmp % 1000000000; +} +#endif + #endif /* _KERNEL */ #endif /* !_SYS_MBUF_H_ */ |