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kpi_mbuf.c
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1887 lines (1588 loc) · 39.5 KB
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/*
* Copyright (c) 2004-2017 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#define __KPI__
#include <sys/param.h>
#include <sys/mbuf.h>
#include <sys/mcache.h>
#include <sys/socket.h>
#include <kern/debug.h>
#include <libkern/OSAtomic.h>
#include <kern/kalloc.h>
#include <string.h>
#include <net/dlil.h>
#include <netinet/in.h>
#include <netinet/ip_var.h>
#include "net/net_str_id.h"
/* mbuf flags visible to KPI clients; do not add private flags here */
static const mbuf_flags_t mbuf_flags_mask = (MBUF_EXT | MBUF_PKTHDR | MBUF_EOR |
MBUF_LOOP | MBUF_BCAST | MBUF_MCAST | MBUF_FRAG | MBUF_FIRSTFRAG |
MBUF_LASTFRAG | MBUF_PROMISC | MBUF_HASFCS);
/* Unalterable mbuf flags */
static const mbuf_flags_t mbuf_cflags_mask = (MBUF_EXT);
#define MAX_MBUF_TX_COMPL_FUNC 32
mbuf_tx_compl_func
mbuf_tx_compl_table[MAX_MBUF_TX_COMPL_FUNC];
extern lck_rw_t *mbuf_tx_compl_tbl_lock;
u_int32_t mbuf_tx_compl_index = 0;
#if (DEVELOPMENT || DEBUG)
int mbuf_tx_compl_debug = 0;
SInt64 mbuf_tx_compl_outstanding __attribute__((aligned(8))) = 0;
u_int64_t mbuf_tx_compl_aborted __attribute__((aligned(8))) = 0;
SYSCTL_DECL(_kern_ipc);
SYSCTL_NODE(_kern_ipc, OID_AUTO, mbtxcf,
CTLFLAG_RW | CTLFLAG_LOCKED, 0, "");
SYSCTL_INT(_kern_ipc_mbtxcf, OID_AUTO, debug,
CTLFLAG_RW | CTLFLAG_LOCKED, &mbuf_tx_compl_debug, 0, "");
SYSCTL_INT(_kern_ipc_mbtxcf, OID_AUTO, index,
CTLFLAG_RD | CTLFLAG_LOCKED, &mbuf_tx_compl_index, 0, "");
SYSCTL_QUAD(_kern_ipc_mbtxcf, OID_AUTO, oustanding,
CTLFLAG_RD | CTLFLAG_LOCKED, &mbuf_tx_compl_outstanding, "");
SYSCTL_QUAD(_kern_ipc_mbtxcf, OID_AUTO, aborted,
CTLFLAG_RD | CTLFLAG_LOCKED, &mbuf_tx_compl_aborted, "");
#endif /* (DEBUG || DEVELOPMENT) */
void *
mbuf_data(mbuf_t mbuf)
{
return (mbuf->m_data);
}
void *
mbuf_datastart(mbuf_t mbuf)
{
if (mbuf->m_flags & M_EXT)
return (mbuf->m_ext.ext_buf);
if (mbuf->m_flags & M_PKTHDR)
return (mbuf->m_pktdat);
return (mbuf->m_dat);
}
errno_t
mbuf_setdata(mbuf_t mbuf, void *data, size_t len)
{
size_t start = (size_t)((char *)mbuf_datastart(mbuf));
size_t maxlen = mbuf_maxlen(mbuf);
if ((size_t)data < start || ((size_t)data) + len > start + maxlen)
return (EINVAL);
mbuf->m_data = data;
mbuf->m_len = len;
return (0);
}
errno_t
mbuf_align_32(mbuf_t mbuf, size_t len)
{
if ((mbuf->m_flags & M_EXT) != 0 && m_mclhasreference(mbuf))
return (ENOTSUP);
mbuf->m_data = mbuf_datastart(mbuf);
mbuf->m_data +=
((mbuf_trailingspace(mbuf) - len) &~ (sizeof(u_int32_t) - 1));
return (0);
}
/*
* This function is used to provide mcl_to_paddr via symbol indirection,
* please avoid any change in behavior or remove the indirection in
* config/Unsupported*
*/
addr64_t
mbuf_data_to_physical(void *ptr)
{
return ((addr64_t)mcl_to_paddr(ptr));
}
errno_t
mbuf_get(mbuf_how_t how, mbuf_type_t type, mbuf_t *mbuf)
{
/* Must set *mbuf to NULL in failure case */
*mbuf = m_get(how, type);
return (*mbuf == NULL ? ENOMEM : 0);
}
errno_t
mbuf_gethdr(mbuf_how_t how, mbuf_type_t type, mbuf_t *mbuf)
{
/* Must set *mbuf to NULL in failure case */
*mbuf = m_gethdr(how, type);
return (*mbuf == NULL ? ENOMEM : 0);
}
errno_t
mbuf_attachcluster(mbuf_how_t how, mbuf_type_t type, mbuf_t *mbuf,
caddr_t extbuf, void (*extfree)(caddr_t, u_int, caddr_t),
size_t extsize, caddr_t extarg)
{
if (mbuf == NULL || extbuf == NULL || extfree == NULL || extsize == 0)
return (EINVAL);
if ((*mbuf = m_clattach(*mbuf, type, extbuf,
extfree, extsize, extarg, how, 0)) == NULL)
return (ENOMEM);
return (0);
}
errno_t
mbuf_ring_cluster_alloc(mbuf_how_t how, mbuf_type_t type, mbuf_t *mbuf,
void (*extfree)(caddr_t, u_int, caddr_t), size_t *size)
{
caddr_t extbuf = NULL;
errno_t err;
if (mbuf == NULL || extfree == NULL || size == NULL || *size == 0)
return (EINVAL);
if ((err = mbuf_alloccluster(how, size, &extbuf)) != 0)
return (err);
if ((*mbuf = m_clattach(*mbuf, type, extbuf,
extfree, *size, NULL, how, 1)) == NULL) {
mbuf_freecluster(extbuf, *size);
return (ENOMEM);
}
return (0);
}
int
mbuf_ring_cluster_is_active(mbuf_t mbuf)
{
return (m_ext_paired_is_active(mbuf));
}
errno_t
mbuf_ring_cluster_activate(mbuf_t mbuf)
{
if (mbuf_ring_cluster_is_active(mbuf))
return (EBUSY);
m_ext_paired_activate(mbuf);
return (0);
}
errno_t
mbuf_cluster_set_prop(mbuf_t mbuf, u_int32_t oldprop, u_int32_t newprop)
{
if (mbuf == NULL || !(mbuf->m_flags & M_EXT))
return (EINVAL);
return (m_ext_set_prop(mbuf, oldprop, newprop) ? 0 : EBUSY);
}
errno_t
mbuf_cluster_get_prop(mbuf_t mbuf, u_int32_t *prop)
{
if (mbuf == NULL || prop == NULL || !(mbuf->m_flags & M_EXT))
return (EINVAL);
*prop = m_ext_get_prop(mbuf);
return (0);
}
errno_t
mbuf_alloccluster(mbuf_how_t how, size_t *size, caddr_t *addr)
{
if (size == NULL || *size == 0 || addr == NULL)
return (EINVAL);
*addr = NULL;
/* Jumbo cluster pool not available? */
if (*size > MBIGCLBYTES && njcl == 0)
return (ENOTSUP);
if (*size <= MCLBYTES && (*addr = m_mclalloc(how)) != NULL)
*size = MCLBYTES;
else if (*size > MCLBYTES && *size <= MBIGCLBYTES &&
(*addr = m_bigalloc(how)) != NULL)
*size = MBIGCLBYTES;
else if (*size > MBIGCLBYTES && *size <= M16KCLBYTES &&
(*addr = m_16kalloc(how)) != NULL)
*size = M16KCLBYTES;
else
*size = 0;
if (*addr == NULL)
return (ENOMEM);
return (0);
}
void
mbuf_freecluster(caddr_t addr, size_t size)
{
if (size != MCLBYTES && size != MBIGCLBYTES && size != M16KCLBYTES)
panic("%s: invalid size (%ld) for cluster %p", __func__,
size, (void *)addr);
if (size == MCLBYTES)
m_mclfree(addr);
else if (size == MBIGCLBYTES)
m_bigfree(addr, MBIGCLBYTES, NULL);
else if (njcl > 0)
m_16kfree(addr, M16KCLBYTES, NULL);
else
panic("%s: freeing jumbo cluster to an empty pool", __func__);
}
errno_t
mbuf_getcluster(mbuf_how_t how, mbuf_type_t type, size_t size, mbuf_t *mbuf)
{
/* Must set *mbuf to NULL in failure case */
errno_t error = 0;
int created = 0;
if (mbuf == NULL)
return (EINVAL);
if (*mbuf == NULL) {
*mbuf = m_get(how, type);
if (*mbuf == NULL)
return (ENOMEM);
created = 1;
}
/*
* At the time this code was written, m_{mclget,mbigget,m16kget}
* would always return the same value that was passed in to it.
*/
if (size == MCLBYTES) {
*mbuf = m_mclget(*mbuf, how);
} else if (size == MBIGCLBYTES) {
*mbuf = m_mbigget(*mbuf, how);
} else if (size == M16KCLBYTES) {
if (njcl > 0) {
*mbuf = m_m16kget(*mbuf, how);
} else {
/* Jumbo cluster pool not available? */
error = ENOTSUP;
goto out;
}
} else {
error = EINVAL;
goto out;
}
if (*mbuf == NULL || ((*mbuf)->m_flags & M_EXT) == 0)
error = ENOMEM;
out:
if (created && error != 0) {
mbuf_free(*mbuf);
*mbuf = NULL;
}
return (error);
}
errno_t
mbuf_mclget(mbuf_how_t how, mbuf_type_t type, mbuf_t *mbuf)
{
/* Must set *mbuf to NULL in failure case */
errno_t error = 0;
int created = 0;
if (mbuf == NULL)
return (EINVAL);
if (*mbuf == NULL) {
error = mbuf_get(how, type, mbuf);
if (error)
return (error);
created = 1;
}
/*
* At the time this code was written, m_mclget would always
* return the same value that was passed in to it.
*/
*mbuf = m_mclget(*mbuf, how);
if (created && ((*mbuf)->m_flags & M_EXT) == 0) {
mbuf_free(*mbuf);
*mbuf = NULL;
}
if (*mbuf == NULL || ((*mbuf)->m_flags & M_EXT) == 0)
error = ENOMEM;
return (error);
}
errno_t
mbuf_getpacket(mbuf_how_t how, mbuf_t *mbuf)
{
/* Must set *mbuf to NULL in failure case */
errno_t error = 0;
*mbuf = m_getpacket_how(how);
if (*mbuf == NULL) {
if (how == MBUF_WAITOK)
error = ENOMEM;
else
error = EWOULDBLOCK;
}
return (error);
}
/*
* This function is used to provide m_free via symbol indirection, please avoid
* any change in behavior or remove the indirection in config/Unsupported*
*/
mbuf_t
mbuf_free(mbuf_t mbuf)
{
return (m_free(mbuf));
}
/*
* This function is used to provide m_freem via symbol indirection, please avoid
* any change in behavior or remove the indirection in config/Unsupported*
*/
void
mbuf_freem(mbuf_t mbuf)
{
m_freem(mbuf);
}
int
mbuf_freem_list(mbuf_t mbuf)
{
return (m_freem_list(mbuf));
}
size_t
mbuf_leadingspace(const mbuf_t mbuf)
{
return (m_leadingspace(mbuf));
}
/*
* This function is used to provide m_trailingspace via symbol indirection,
* please avoid any change in behavior or remove the indirection in
* config/Unsupported*
*/
size_t
mbuf_trailingspace(const mbuf_t mbuf)
{
return (m_trailingspace(mbuf));
}
/* Manipulation */
errno_t
mbuf_copym(const mbuf_t src, size_t offset, size_t len,
mbuf_how_t how, mbuf_t *new_mbuf)
{
/* Must set *mbuf to NULL in failure case */
*new_mbuf = m_copym(src, offset, len, how);
return (*new_mbuf == NULL ? ENOMEM : 0);
}
errno_t
mbuf_dup(const mbuf_t src, mbuf_how_t how, mbuf_t *new_mbuf)
{
/* Must set *new_mbuf to NULL in failure case */
*new_mbuf = m_dup(src, how);
return (*new_mbuf == NULL ? ENOMEM : 0);
}
errno_t
mbuf_prepend(mbuf_t *orig, size_t len, mbuf_how_t how)
{
/* Must set *orig to NULL in failure case */
*orig = m_prepend_2(*orig, len, how, 0);
return (*orig == NULL ? ENOMEM : 0);
}
errno_t
mbuf_split(mbuf_t src, size_t offset,
mbuf_how_t how, mbuf_t *new_mbuf)
{
/* Must set *new_mbuf to NULL in failure case */
*new_mbuf = m_split(src, offset, how);
return (*new_mbuf == NULL ? ENOMEM : 0);
}
errno_t
mbuf_pullup(mbuf_t *mbuf, size_t len)
{
/* Must set *mbuf to NULL in failure case */
*mbuf = m_pullup(*mbuf, len);
return (*mbuf == NULL ? ENOMEM : 0);
}
errno_t
mbuf_pulldown(mbuf_t src, size_t *offset, size_t len, mbuf_t *location)
{
/* Must set *location to NULL in failure case */
int new_offset;
*location = m_pulldown(src, *offset, len, &new_offset);
*offset = new_offset;
return (*location == NULL ? ENOMEM : 0);
}
/*
* This function is used to provide m_adj via symbol indirection, please avoid
* any change in behavior or remove the indirection in config/Unsupported*
*/
void
mbuf_adj(mbuf_t mbuf, int len)
{
m_adj(mbuf, len);
}
errno_t
mbuf_adjustlen(mbuf_t m, int amount)
{
/* Verify m_len will be valid after adding amount */
if (amount > 0) {
int used = (size_t)mbuf_data(m) - (size_t)mbuf_datastart(m) +
m->m_len;
if ((size_t)(amount + used) > mbuf_maxlen(m))
return (EINVAL);
} else if (-amount > m->m_len) {
return (EINVAL);
}
m->m_len += amount;
return (0);
}
mbuf_t
mbuf_concatenate(mbuf_t dst, mbuf_t src)
{
if (dst == NULL)
return (NULL);
m_cat(dst, src);
/* return dst as is in the current implementation */
return (dst);
}
errno_t
mbuf_copydata(const mbuf_t m0, size_t off, size_t len, void *out_data)
{
/* Copied m_copydata, added error handling (don't just panic) */
int count;
mbuf_t m = m0;
while (off > 0) {
if (m == 0)
return (EINVAL);
if (off < (size_t)m->m_len)
break;
off -= m->m_len;
m = m->m_next;
}
while (len > 0) {
if (m == 0)
return (EINVAL);
count = m->m_len - off > len ? len : m->m_len - off;
bcopy(mtod(m, caddr_t) + off, out_data, count);
len -= count;
out_data = ((char *)out_data) + count;
off = 0;
m = m->m_next;
}
return (0);
}
int
mbuf_mclhasreference(mbuf_t mbuf)
{
if ((mbuf->m_flags & M_EXT))
return (m_mclhasreference(mbuf));
else
return (0);
}
/* mbuf header */
mbuf_t
mbuf_next(const mbuf_t mbuf)
{
return (mbuf->m_next);
}
errno_t
mbuf_setnext(mbuf_t mbuf, mbuf_t next)
{
if (next && ((next)->m_nextpkt != NULL ||
(next)->m_type == MT_FREE))
return (EINVAL);
mbuf->m_next = next;
return (0);
}
mbuf_t
mbuf_nextpkt(const mbuf_t mbuf)
{
return (mbuf->m_nextpkt);
}
void
mbuf_setnextpkt(mbuf_t mbuf, mbuf_t nextpkt)
{
mbuf->m_nextpkt = nextpkt;
}
size_t
mbuf_len(const mbuf_t mbuf)
{
return (mbuf->m_len);
}
void
mbuf_setlen(mbuf_t mbuf, size_t len)
{
mbuf->m_len = len;
}
size_t
mbuf_maxlen(const mbuf_t mbuf)
{
if (mbuf->m_flags & M_EXT)
return (mbuf->m_ext.ext_size);
return (&mbuf->m_dat[MLEN] - ((char *)mbuf_datastart(mbuf)));
}
mbuf_type_t
mbuf_type(const mbuf_t mbuf)
{
return (mbuf->m_type);
}
errno_t
mbuf_settype(mbuf_t mbuf, mbuf_type_t new_type)
{
if (new_type == MBUF_TYPE_FREE)
return (EINVAL);
m_mchtype(mbuf, new_type);
return (0);
}
mbuf_flags_t
mbuf_flags(const mbuf_t mbuf)
{
return (mbuf->m_flags & mbuf_flags_mask);
}
errno_t
mbuf_setflags(mbuf_t mbuf, mbuf_flags_t flags)
{
errno_t ret = 0;
mbuf_flags_t oflags = mbuf->m_flags;
/*
* 1. Return error if public but un-alterable flags are changed
* in flags argument.
* 2. Return error if bits other than public flags are set in passed
* flags argument.
* Please note that private flag bits must be passed as reset by
* kexts, as they must use mbuf_flags KPI to get current set of
* mbuf flags and mbuf_flags KPI does not expose private flags.
*/
if ((flags ^ oflags) & mbuf_cflags_mask) {
ret = EINVAL;
} else if (flags & ~mbuf_flags_mask) {
ret = EINVAL;
} else {
mbuf->m_flags = flags | (mbuf->m_flags & ~mbuf_flags_mask);
/*
* If M_PKTHDR bit has changed, we have work to do;
* m_reinit() will take care of setting/clearing the
* bit, as well as the rest of bookkeeping.
*/
if ((oflags ^ mbuf->m_flags) & M_PKTHDR) {
mbuf->m_flags ^= M_PKTHDR; /* restore */
ret = m_reinit(mbuf,
(mbuf->m_flags & M_PKTHDR) ? 0 : 1);
}
}
return (ret);
}
errno_t
mbuf_setflags_mask(mbuf_t mbuf, mbuf_flags_t flags, mbuf_flags_t mask)
{
errno_t ret = 0;
if (mask & (~mbuf_flags_mask | mbuf_cflags_mask)) {
ret = EINVAL;
} else {
mbuf_flags_t oflags = mbuf->m_flags;
mbuf->m_flags = (flags & mask) | (mbuf->m_flags & ~mask);
/*
* If M_PKTHDR bit has changed, we have work to do;
* m_reinit() will take care of setting/clearing the
* bit, as well as the rest of bookkeeping.
*/
if ((oflags ^ mbuf->m_flags) & M_PKTHDR) {
mbuf->m_flags ^= M_PKTHDR; /* restore */
ret = m_reinit(mbuf,
(mbuf->m_flags & M_PKTHDR) ? 0 : 1);
}
}
return (ret);
}
errno_t
mbuf_copy_pkthdr(mbuf_t dest, const mbuf_t src)
{
if (((src)->m_flags & M_PKTHDR) == 0)
return (EINVAL);
m_copy_pkthdr(dest, src);
return (0);
}
size_t
mbuf_pkthdr_len(const mbuf_t mbuf)
{
return (mbuf->m_pkthdr.len);
}
__private_extern__ size_t
mbuf_pkthdr_maxlen(mbuf_t m)
{
size_t maxlen = 0;
mbuf_t n = m;
while (n) {
maxlen += mbuf_maxlen(n);
n = mbuf_next(n);
}
return (maxlen);
}
void
mbuf_pkthdr_setlen(mbuf_t mbuf, size_t len)
{
mbuf->m_pkthdr.len = len;
}
void
mbuf_pkthdr_adjustlen(mbuf_t mbuf, int amount)
{
mbuf->m_pkthdr.len += amount;
}
ifnet_t
mbuf_pkthdr_rcvif(const mbuf_t mbuf)
{
/*
* If we reference count ifnets, we should take a reference here
* before returning
*/
return (mbuf->m_pkthdr.rcvif);
}
errno_t
mbuf_pkthdr_setrcvif(mbuf_t mbuf, ifnet_t ifnet)
{
/* May want to walk ifnet list to determine if interface is valid */
mbuf->m_pkthdr.rcvif = (struct ifnet *)ifnet;
return (0);
}
void*
mbuf_pkthdr_header(const mbuf_t mbuf)
{
return (mbuf->m_pkthdr.pkt_hdr);
}
void
mbuf_pkthdr_setheader(mbuf_t mbuf, void *header)
{
mbuf->m_pkthdr.pkt_hdr = (void*)header;
}
void
mbuf_inbound_modified(mbuf_t mbuf)
{
/* Invalidate hardware generated checksum flags */
mbuf->m_pkthdr.csum_flags = 0;
}
void
mbuf_outbound_finalize(struct mbuf *m, u_int32_t pf, size_t o)
{
/* Generate the packet in software, client needs it */
switch (pf) {
case PF_INET:
(void) in_finalize_cksum(m, o, m->m_pkthdr.csum_flags);
break;
case PF_INET6:
#if INET6
/*
* Checksum offload should not have been enabled when
* extension headers exist; indicate that the callee
* should skip such case by setting optlen to -1.
*/
(void) in6_finalize_cksum(m, o, -1, -1, m->m_pkthdr.csum_flags);
#endif /* INET6 */
break;
default:
break;
}
}
errno_t
mbuf_set_vlan_tag(
mbuf_t mbuf,
u_int16_t vlan)
{
mbuf->m_pkthdr.csum_flags |= CSUM_VLAN_TAG_VALID;
mbuf->m_pkthdr.vlan_tag = vlan;
return (0);
}
errno_t
mbuf_get_vlan_tag(
mbuf_t mbuf,
u_int16_t *vlan)
{
if ((mbuf->m_pkthdr.csum_flags & CSUM_VLAN_TAG_VALID) == 0)
return (ENXIO); // No vlan tag set
*vlan = mbuf->m_pkthdr.vlan_tag;
return (0);
}
errno_t
mbuf_clear_vlan_tag(
mbuf_t mbuf)
{
mbuf->m_pkthdr.csum_flags &= ~CSUM_VLAN_TAG_VALID;
mbuf->m_pkthdr.vlan_tag = 0;
return (0);
}
static const mbuf_csum_request_flags_t mbuf_valid_csum_request_flags =
MBUF_CSUM_REQ_IP | MBUF_CSUM_REQ_TCP | MBUF_CSUM_REQ_UDP |
MBUF_CSUM_PARTIAL | MBUF_CSUM_REQ_TCPIPV6 | MBUF_CSUM_REQ_UDPIPV6;
errno_t
mbuf_set_csum_requested(
mbuf_t mbuf,
mbuf_csum_request_flags_t request,
u_int32_t value)
{
request &= mbuf_valid_csum_request_flags;
mbuf->m_pkthdr.csum_flags =
(mbuf->m_pkthdr.csum_flags & 0xffff0000) | request;
mbuf->m_pkthdr.csum_data = value;
return (0);
}
static const mbuf_tso_request_flags_t mbuf_valid_tso_request_flags =
MBUF_TSO_IPV4 | MBUF_TSO_IPV6;
errno_t
mbuf_get_tso_requested(
mbuf_t mbuf,
mbuf_tso_request_flags_t *request,
u_int32_t *value)
{
if (mbuf == NULL || (mbuf->m_flags & M_PKTHDR) == 0 ||
request == NULL || value == NULL)
return (EINVAL);
*request = mbuf->m_pkthdr.csum_flags;
*request &= mbuf_valid_tso_request_flags;
if (*request && value != NULL)
*value = mbuf->m_pkthdr.tso_segsz;
return (0);
}
errno_t
mbuf_get_csum_requested(
mbuf_t mbuf,
mbuf_csum_request_flags_t *request,
u_int32_t *value)
{
*request = mbuf->m_pkthdr.csum_flags;
*request &= mbuf_valid_csum_request_flags;
if (value != NULL) {
*value = mbuf->m_pkthdr.csum_data;
}
return (0);
}
errno_t
mbuf_clear_csum_requested(
mbuf_t mbuf)
{
mbuf->m_pkthdr.csum_flags &= 0xffff0000;
mbuf->m_pkthdr.csum_data = 0;
return (0);
}
static const mbuf_csum_performed_flags_t mbuf_valid_csum_performed_flags =
MBUF_CSUM_DID_IP | MBUF_CSUM_IP_GOOD | MBUF_CSUM_DID_DATA |
MBUF_CSUM_PSEUDO_HDR | MBUF_CSUM_PARTIAL;
errno_t
mbuf_set_csum_performed(
mbuf_t mbuf,
mbuf_csum_performed_flags_t performed,
u_int32_t value)
{
performed &= mbuf_valid_csum_performed_flags;
mbuf->m_pkthdr.csum_flags =
(mbuf->m_pkthdr.csum_flags & 0xffff0000) | performed;
mbuf->m_pkthdr.csum_data = value;
return (0);
}
errno_t
mbuf_get_csum_performed(
mbuf_t mbuf,
mbuf_csum_performed_flags_t *performed,
u_int32_t *value)
{
*performed =
mbuf->m_pkthdr.csum_flags & mbuf_valid_csum_performed_flags;
*value = mbuf->m_pkthdr.csum_data;
return (0);
}
errno_t
mbuf_clear_csum_performed(
mbuf_t mbuf)
{
mbuf->m_pkthdr.csum_flags &= 0xffff0000;
mbuf->m_pkthdr.csum_data = 0;
return (0);
}
errno_t
mbuf_inet_cksum(mbuf_t mbuf, int protocol, u_int32_t offset, u_int32_t length,
u_int16_t *csum)
{
if (mbuf == NULL || length == 0 || csum == NULL ||
(u_int32_t)mbuf->m_pkthdr.len < (offset + length))
return (EINVAL);
*csum = inet_cksum(mbuf, protocol, offset, length);
return (0);
}
#if INET6
errno_t
mbuf_inet6_cksum(mbuf_t mbuf, int protocol, u_int32_t offset, u_int32_t length,
u_int16_t *csum)
{
if (mbuf == NULL || length == 0 || csum == NULL ||
(u_int32_t)mbuf->m_pkthdr.len < (offset + length))
return (EINVAL);
*csum = inet6_cksum(mbuf, protocol, offset, length);
return (0);
}
#else /* INET6 */
errno_t
mbuf_inet6_cksum(__unused mbuf_t mbuf, __unused int protocol,
__unused u_int32_t offset, __unused u_int32_t length,
__unused u_int16_t *csum)
{
panic("mbuf_inet6_cksum() doesn't exist on this platform\n");
return (0);
}
u_int16_t
inet6_cksum(__unused struct mbuf *m, __unused unsigned int nxt,
__unused unsigned int off, __unused unsigned int len)
{
panic("inet6_cksum() doesn't exist on this platform\n");
return (0);
}
void nd6_lookup_ipv6(void);
void
nd6_lookup_ipv6(void)
{
panic("nd6_lookup_ipv6() doesn't exist on this platform\n");
}
int
in6addr_local(__unused struct in6_addr *a)
{
panic("in6addr_local() doesn't exist on this platform\n");
return (0);
}
void nd6_storelladdr(void);
void
nd6_storelladdr(void)
{
panic("nd6_storelladdr() doesn't exist on this platform\n");
}
#endif /* INET6 */
/*
* Mbuf tag KPIs
*/
#define MTAG_FIRST_ID FIRST_KPI_STR_ID
errno_t
mbuf_tag_id_find(
const char *string,
mbuf_tag_id_t *out_id)
{
return (net_str_id_find_internal(string, out_id, NSI_MBUF_TAG, 1));
}
errno_t
mbuf_tag_allocate(
mbuf_t mbuf,
mbuf_tag_id_t id,
mbuf_tag_type_t type,
size_t length,