/*
- * Copyright (c) 2004-2009 Apple Inc. All rights reserved.
+ * 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
* 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,
* 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/kpi_interface.h>
+#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"
-static const mbuf_flags_t mbuf_flags_mask = MBUF_EXT | MBUF_PKTHDR | MBUF_EOR |
- MBUF_BCAST | MBUF_MCAST | MBUF_FRAG | MBUF_FIRSTFRAG |
- MBUF_LASTFRAG | MBUF_PROMISC;
+/* 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)
+void *
+mbuf_data(mbuf_t mbuf)
{
- return mbuf->m_data;
+ return (mbuf->m_data);
}
-void* mbuf_datastart(mbuf_t mbuf)
+void *
+mbuf_datastart(mbuf_t mbuf)
{
if (mbuf->m_flags & M_EXT)
- return mbuf->m_ext.ext_buf;
+ return (mbuf->m_ext.ext_buf);
if (mbuf->m_flags & M_PKTHDR)
- return mbuf->m_pktdat;
- return mbuf->m_dat;
+ return (mbuf->m_pktdat);
+ return (mbuf->m_dat);
}
-errno_t mbuf_setdata(mbuf_t mbuf, void* data, size_t len)
+errno_t
+mbuf_setdata(mbuf_t mbuf, void *data, size_t len)
{
- size_t start = (size_t)((char*)mbuf_datastart(mbuf));
+ 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;
+ return (EINVAL);
mbuf->m_data = data;
mbuf->m_len = len;
-
- return 0;
+
+ return (0);
}
-errno_t mbuf_align_32(mbuf_t mbuf, size_t len)
+errno_t
+mbuf_align_32(mbuf_t mbuf, size_t len)
{
if ((mbuf->m_flags & M_EXT) != 0 && m_mclhasreference(mbuf))
- return ENOTSUP;
+ return (ENOTSUP);
mbuf->m_data = mbuf_datastart(mbuf);
- mbuf->m_data += ((mbuf_trailingspace(mbuf) - len) &~ (sizeof(u_int32_t) - 1));
-
- return 0;
+ mbuf->m_data +=
+ ((mbuf_trailingspace(mbuf) - len) &~ (sizeof(u_int32_t) - 1));
+
+ return (0);
}
-addr64_t mbuf_data_to_physical(void* ptr)
+/*
+ * 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)(intptr_t)mcl_to_paddr(ptr);
+ return ((addr64_t)mcl_to_paddr(ptr));
}
-errno_t mbuf_get(mbuf_how_t how, mbuf_type_t type, mbuf_t *mbuf)
+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;
+
+ return (*mbuf == NULL ? ENOMEM : 0);
}
-errno_t mbuf_gethdr(mbuf_how_t how, mbuf_type_t type, mbuf_t *mbuf)
+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;
+
+ 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),
+ caddr_t extbuf, void (*extfree)(caddr_t, u_int, caddr_t),
size_t extsize, caddr_t extarg)
{
- if (extbuf == NULL || extfree == NULL || extsize == 0)
+ 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 ((*mbuf = m_clattach(mbuf != NULL ? *mbuf : NULL, type, extbuf,
- extfree, extsize, extarg, how)) == NULL)
+ 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);
}
*addr = NULL;
/* Jumbo cluster pool not available? */
- if (*size > NBPG && njcl == 0)
+ if (*size > MBIGCLBYTES && njcl == 0)
return (ENOTSUP);
if (*size <= MCLBYTES && (*addr = m_mclalloc(how)) != NULL)
*size = MCLBYTES;
- else if (*size > MCLBYTES && *size <= NBPG &&
+ else if (*size > MCLBYTES && *size <= MBIGCLBYTES &&
(*addr = m_bigalloc(how)) != NULL)
- *size = NBPG;
- else if (*size > NBPG && *size <= M16KCLBYTES &&
+ *size = MBIGCLBYTES;
+ else if (*size > MBIGCLBYTES && *size <= M16KCLBYTES &&
(*addr = m_16kalloc(how)) != NULL)
*size = M16KCLBYTES;
else
void
mbuf_freecluster(caddr_t addr, size_t size)
{
- if (size != MCLBYTES && size != NBPG && size != M16KCLBYTES)
+ 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 == NBPG)
- m_bigfree(addr, NBPG, NULL);
+ else if (size == MBIGCLBYTES)
+ m_bigfree(addr, MBIGCLBYTES, NULL);
else if (njcl > 0)
m_16kfree(addr, M16KCLBYTES, NULL);
else
}
errno_t
-mbuf_getcluster(mbuf_how_t how, mbuf_type_t type, size_t size, mbuf_t* mbuf)
+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;
+ return (EINVAL);
if (*mbuf == NULL) {
*mbuf = m_get(how, type);
if (*mbuf == NULL)
- return ENOMEM;
+ return (ENOMEM);
created = 1;
}
/*
*/
if (size == MCLBYTES) {
*mbuf = m_mclget(*mbuf, how);
- } else if (size == NBPG) {
+ } else if (size == MBIGCLBYTES) {
*mbuf = m_mbigget(*mbuf, how);
} else if (size == M16KCLBYTES) {
if (njcl > 0) {
mbuf_free(*mbuf);
*mbuf = NULL;
}
- return error;
+ return (error);
}
-errno_t mbuf_mclget(mbuf_how_t how, mbuf_type_t type, mbuf_t *mbuf)
+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)
+ return (EINVAL);
if (*mbuf == NULL) {
error = mbuf_get(how, type, mbuf);
if (error)
- return 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;
+ return (error);
}
-errno_t mbuf_getpacket(mbuf_how_t how, mbuf_t *mbuf)
+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;
+
+ return (error);
}
-mbuf_t mbuf_free(mbuf_t mbuf)
+/*
+ * 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);
+ return (m_free(mbuf));
}
-void mbuf_freem(mbuf_t 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)
+int
+mbuf_freem_list(mbuf_t mbuf)
{
- return m_freem_list(mbuf);
+ return (m_freem_list(mbuf));
}
-size_t mbuf_leadingspace(const mbuf_t mbuf)
+size_t
+mbuf_leadingspace(const mbuf_t mbuf)
{
- return m_leadingspace(mbuf);
+ return (m_leadingspace(mbuf));
}
-size_t mbuf_trailingspace(const mbuf_t 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);
+ 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)
+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;
+
+ return (*new_mbuf == NULL ? ENOMEM : 0);
}
-errno_t mbuf_dup(const mbuf_t src, mbuf_how_t how, mbuf_t *new_mbuf)
+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;
+
+ return (*new_mbuf == NULL ? ENOMEM : 0);
}
-errno_t mbuf_prepend(mbuf_t *orig, size_t len, mbuf_how_t how)
+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);
-
- return (*orig == NULL) ? ENOMEM : 0;
+ *orig = m_prepend_2(*orig, len, how, 0);
+
+ return (*orig == NULL ? ENOMEM : 0);
}
-errno_t mbuf_split(mbuf_t src, size_t offset,
+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;
+
+ return (*new_mbuf == NULL ? ENOMEM : 0);
}
-errno_t mbuf_pullup(mbuf_t *mbuf, size_t len)
+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;
+
+ return (*mbuf == NULL ? ENOMEM : 0);
}
-errno_t mbuf_pulldown(mbuf_t src, size_t *offset, size_t len, mbuf_t *location)
+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;
+
+ return (*location == NULL ? ENOMEM : 0);
}
-void mbuf_adj(mbuf_t mbuf, int len)
+/*
+ * 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)
+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;
-
+ 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;
+ return (EINVAL);
+ } else if (-amount > m->m_len) {
+ return (EINVAL);
}
-
+
m->m_len += amount;
- return 0;
+ return (0);
}
mbuf_t
/* 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)
+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;
while (off > 0) {
if (m == 0)
- return EINVAL;
+ return (EINVAL);
if (off < (size_t)m->m_len)
break;
off -= m->m_len;
}
while (len > 0) {
if (m == 0)
- return EINVAL;
+ 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;
+ out_data = ((char *)out_data) + count;
off = 0;
m = m->m_next;
}
-
- return 0;
+
+ return (0);
}
-int mbuf_mclhasreference(mbuf_t mbuf)
+int
+mbuf_mclhasreference(mbuf_t mbuf)
{
if ((mbuf->m_flags & M_EXT))
- return m_mclhasreference(mbuf);
+ return (m_mclhasreference(mbuf));
else
- return 0;
+ return (0);
}
/* mbuf header */
-mbuf_t mbuf_next(const mbuf_t mbuf)
+mbuf_t
+mbuf_next(const mbuf_t mbuf)
{
- return mbuf->m_next;
+ return (mbuf->m_next);
}
-errno_t mbuf_setnext(mbuf_t mbuf, mbuf_t next)
+errno_t
+mbuf_setnext(mbuf_t mbuf, mbuf_t next)
{
if (next && ((next)->m_nextpkt != NULL ||
- (next)->m_type == MT_FREE)) return EINVAL;
+ (next)->m_type == MT_FREE))
+ return (EINVAL);
mbuf->m_next = next;
-
- return 0;
+
+ return (0);
}
-mbuf_t mbuf_nextpkt(const mbuf_t mbuf)
+mbuf_t
+mbuf_nextpkt(const mbuf_t mbuf)
{
- return mbuf->m_nextpkt;
+ return (mbuf->m_nextpkt);
}
-void mbuf_setnextpkt(mbuf_t mbuf, mbuf_t nextpkt)
+void
+mbuf_setnextpkt(mbuf_t mbuf, mbuf_t nextpkt)
{
mbuf->m_nextpkt = nextpkt;
}
-size_t mbuf_len(const mbuf_t mbuf)
+size_t
+mbuf_len(const mbuf_t mbuf)
{
- return mbuf->m_len;
+ return (mbuf->m_len);
}
-void mbuf_setlen(mbuf_t mbuf, size_t len)
+void
+mbuf_setlen(mbuf_t mbuf, size_t len)
{
mbuf->m_len = len;
}
-size_t mbuf_maxlen(const mbuf_t mbuf)
+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));
+ return (mbuf->m_ext.ext_size);
+ return (&mbuf->m_dat[MLEN] - ((char *)mbuf_datastart(mbuf)));
}
-mbuf_type_t mbuf_type(const mbuf_t mbuf)
+mbuf_type_t
+mbuf_type(const mbuf_t mbuf)
{
- return mbuf->m_type;
+ return (mbuf->m_type);
}
-errno_t mbuf_settype(mbuf_t mbuf, mbuf_type_t new_type)
+errno_t
+mbuf_settype(mbuf_t mbuf, mbuf_type_t new_type)
{
- if (new_type == MBUF_TYPE_FREE) return EINVAL;
-
+ if (new_type == MBUF_TYPE_FREE)
+ return (EINVAL);
+
m_mchtype(mbuf, new_type);
-
- return 0;
+
+ return (0);
}
-mbuf_flags_t mbuf_flags(const mbuf_t mbuf)
+mbuf_flags_t
+mbuf_flags(const mbuf_t mbuf)
{
- return mbuf->m_flags & mbuf_flags_mask;
+ return (mbuf->m_flags & mbuf_flags_mask);
}
-errno_t mbuf_setflags(mbuf_t mbuf, mbuf_flags_t flags)
+errno_t
+mbuf_setflags(mbuf_t mbuf, mbuf_flags_t flags)
{
- if ((flags & ~mbuf_flags_mask) != 0) return EINVAL;
- mbuf->m_flags = flags |
- (mbuf->m_flags & ~mbuf_flags_mask);
-
- return 0;
+ 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
+mbuf_setflags_mask(mbuf_t mbuf, mbuf_flags_t flags, mbuf_flags_t mask)
{
- if (((flags | mask) & ~mbuf_flags_mask) != 0) return EINVAL;
-
- mbuf->m_flags = (flags & mask) | (mbuf->m_flags & ~mask);
-
- return 0;
+ 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)
+errno_t
+mbuf_copy_pkthdr(mbuf_t dest, const mbuf_t src)
{
if (((src)->m_flags & M_PKTHDR) == 0)
- return EINVAL;
-
+ return (EINVAL);
+
m_copy_pkthdr(dest, src);
-
- return 0;
+
+ return (0);
+}
+
+size_t
+mbuf_pkthdr_len(const mbuf_t mbuf)
+{
+ return (mbuf->m_pkthdr.len);
}
-size_t mbuf_pkthdr_len(const mbuf_t mbuf)
+__private_extern__ size_t
+mbuf_pkthdr_maxlen(mbuf_t m)
{
- return mbuf->m_pkthdr.len;
+ 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)
+void
+mbuf_pkthdr_setlen(mbuf_t mbuf, size_t len)
{
mbuf->m_pkthdr.len = len;
}
-void mbuf_pkthdr_adjustlen(mbuf_t mbuf, int amount)
+void
+mbuf_pkthdr_adjustlen(mbuf_t mbuf, int amount)
{
mbuf->m_pkthdr.len += amount;
}
-ifnet_t mbuf_pkthdr_rcvif(const mbuf_t mbuf)
+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;
+ /*
+ * 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)
+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;
+ mbuf->m_pkthdr.rcvif = (struct ifnet *)ifnet;
+ return (0);
}
-void* mbuf_pkthdr_header(const mbuf_t mbuf)
+void*
+mbuf_pkthdr_header(const mbuf_t mbuf)
{
- return mbuf->m_pkthdr.header;
+ return (mbuf->m_pkthdr.pkt_hdr);
}
-void mbuf_pkthdr_setheader(mbuf_t mbuf, void *header)
+void
+mbuf_pkthdr_setheader(mbuf_t mbuf, void *header)
{
- mbuf->m_pkthdr.header = (void*)header;
+ mbuf->m_pkthdr.pkt_hdr = (void*)header;
}
void
mbuf->m_pkthdr.csum_flags = 0;
}
-extern void in_cksum_offset(struct mbuf* m, size_t ip_offset);
-extern void in_delayed_cksum_offset(struct mbuf *m, int ip_offset);
-
void
-mbuf_outbound_finalize(mbuf_t mbuf, u_int32_t protocol_family, size_t protocol_offset)
+mbuf_outbound_finalize(struct mbuf *m, u_int32_t pf, size_t o)
{
- if ((mbuf->m_pkthdr.csum_flags &
- (CSUM_DELAY_DATA | CSUM_DELAY_IP | CSUM_TCP_SUM16)) == 0)
- return;
-
/* Generate the packet in software, client needs it */
- switch (protocol_family) {
- case PF_INET:
- if (mbuf->m_pkthdr.csum_flags & CSUM_TCP_SUM16) {
- /*
- * If you're wondering where this lovely code comes
- * from, we're trying to undo what happens in ip_output.
- * Look for CSUM_TCP_SUM16 in ip_output.
- */
- u_int16_t first, second;
- mbuf->m_pkthdr.csum_flags &= ~CSUM_TCP_SUM16;
- mbuf->m_pkthdr.csum_flags |= CSUM_TCP;
- first = mbuf->m_pkthdr.csum_data >> 16;
- second = mbuf->m_pkthdr.csum_data & 0xffff;
- mbuf->m_pkthdr.csum_data = first - second;
- }
- if (mbuf->m_pkthdr.csum_flags & CSUM_DELAY_DATA) {
- in_delayed_cksum_offset(mbuf, protocol_offset);
- }
-
- if (mbuf->m_pkthdr.csum_flags & CSUM_DELAY_IP) {
- in_cksum_offset(mbuf, protocol_offset);
- }
-
- mbuf->m_pkthdr.csum_flags &= ~(CSUM_DELAY_DATA | CSUM_DELAY_IP);
- break;
-
- default:
- /*
- * Not sure what to do here if anything.
- * Hardware checksum code looked pretty IPv4 specific.
- */
- if ((mbuf->m_pkthdr.csum_flags & (CSUM_DELAY_DATA | CSUM_DELAY_IP)) != 0)
- panic("mbuf_outbound_finalize - CSUM flags set for non-IPv4 packet (%u)!\n", protocol_family);
+ 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;
}
}
{
mbuf->m_pkthdr.csum_flags |= CSUM_VLAN_TAG_VALID;
mbuf->m_pkthdr.vlan_tag = vlan;
-
- return 0;
+
+ return (0);
}
errno_t
u_int16_t *vlan)
{
if ((mbuf->m_pkthdr.csum_flags & CSUM_VLAN_TAG_VALID) == 0)
- return ENXIO; // No vlan tag set
-
+ return (ENXIO); // No vlan tag set
+
*vlan = mbuf->m_pkthdr.vlan_tag;
-
- return 0;
+
+ return (0);
}
errno_t
{
mbuf->m_pkthdr.csum_flags &= ~CSUM_VLAN_TAG_VALID;
mbuf->m_pkthdr.vlan_tag = 0;
-
- return 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_REQ_SUM16;
+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(
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_flags =
+ (mbuf->m_pkthdr.csum_flags & 0xffff0000) | request;
mbuf->m_pkthdr.csum_data = value;
-
- return 0;
+
+ return (0);
}
-static const mbuf_tso_request_flags_t mbuf_valid_tso_request_flags =
+static const mbuf_tso_request_flags_t mbuf_valid_tso_request_flags =
MBUF_TSO_IPV4 | MBUF_TSO_IPV6;
errno_t
{
if (mbuf == NULL || (mbuf->m_flags & M_PKTHDR) == 0 ||
request == NULL || value == NULL)
- return EINVAL;
+ return (EINVAL);
*request = mbuf->m_pkthdr.csum_flags;
*request &= mbuf_valid_tso_request_flags;
- if (*request && value != NULL)
+ if (*request && value != NULL)
*value = mbuf->m_pkthdr.tso_segsz;
-
- return 0;
+
+ return (0);
}
errno_t
if (value != NULL) {
*value = mbuf->m_pkthdr.csum_data;
}
-
- return 0;
+
+ return (0);
}
errno_t
{
mbuf->m_pkthdr.csum_flags &= 0xffff0000;
mbuf->m_pkthdr.csum_data = 0;
-
- return 0;
+
+ return (0);
}
-static const mbuf_csum_performed_flags_t mbuf_valid_csum_performed_flags =
+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_TCP_SUM16;
+ MBUF_CSUM_PSEUDO_HDR | MBUF_CSUM_PARTIAL;
errno_t
mbuf_set_csum_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_flags =
+ (mbuf->m_pkthdr.csum_flags & 0xffff0000) | performed;
mbuf->m_pkthdr.csum_data = value;
-
- return 0;
+
+ return (0);
}
errno_t
mbuf_csum_performed_flags_t *performed,
u_int32_t *value)
{
- *performed = mbuf->m_pkthdr.csum_flags & mbuf_valid_csum_performed_flags;
+ *performed =
+ mbuf->m_pkthdr.csum_flags & mbuf_valid_csum_performed_flags;
*value = mbuf->m_pkthdr.csum_data;
-
- return 0;
+
+ return (0);
}
errno_t
{
mbuf->m_pkthdr.csum_flags &= 0xffff0000;
mbuf->m_pkthdr.csum_data = 0;
-
- return 0;
+
+ return (0);
}
errno_t
u_int16_t *csum)
{
if (mbuf == NULL || length == 0 || csum == NULL ||
- (u_int32_t)mbuf->m_pkthdr.len < (offset + length))
+ (u_int32_t)mbuf->m_pkthdr.len < (offset + length))
return (EINVAL);
*csum = inet_cksum(mbuf, protocol, offset, length);
u_int16_t *csum)
{
if (mbuf == NULL || length == 0 || csum == NULL ||
- (u_int32_t)mbuf->m_pkthdr.len < (offset + length))
+ (u_int32_t)mbuf->m_pkthdr.len < (offset + length))
return (EINVAL);
*csum = inet6_cksum(mbuf, protocol, offset, length);
* Mbuf tag KPIs
*/
-#define MTAG_FIRST_ID FIRST_KPI_STR_ID
+#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);
+ return (net_str_id_find_internal(string, out_id, NSI_MBUF_TAG, 1));
}
errno_t
{
struct m_tag *tag;
u_int32_t mtag_id_first, mtag_id_last;
-
+
if (data_p != NULL)
*data_p = NULL;
-
+
/* Sanity check parameters */
- (void) net_str_id_first_last(&mtag_id_first, &mtag_id_last, NSI_MBUF_TAG);
- if (mbuf == NULL || (mbuf->m_flags & M_PKTHDR) == 0 || id < mtag_id_first ||
- id > mtag_id_last || length < 1 || (length & 0xffff0000) != 0 ||
- data_p == NULL) {
- return EINVAL;
+ (void) net_str_id_first_last(&mtag_id_first, &mtag_id_last,
+ NSI_MBUF_TAG);
+ if (mbuf == NULL || (mbuf->m_flags & M_PKTHDR) == 0 ||
+ id < mtag_id_first || id > mtag_id_last || length < 1 ||
+ (length & 0xffff0000) != 0 || data_p == NULL) {
+ return (EINVAL);
}
-
+
/* Make sure this mtag hasn't already been allocated */
tag = m_tag_locate(mbuf, id, type, NULL);
if (tag != NULL) {
- return EEXIST;
+ return (EEXIST);
}
-
+
/* Allocate an mtag */
- tag = m_tag_alloc(id, type, length, how);
+ tag = m_tag_create(id, type, length, how, mbuf);
if (tag == NULL) {
- return how == M_WAITOK ? ENOMEM : EWOULDBLOCK;
+ return (how == M_WAITOK ? ENOMEM : EWOULDBLOCK);
}
-
+
/* Attach the mtag and set *data_p */
m_tag_prepend(mbuf, tag);
*data_p = tag + 1;
-
- return 0;
+
+ return (0);
}
errno_t
mbuf_tag_find(
- mbuf_t mbuf,
- mbuf_tag_id_t id,
- mbuf_tag_type_t type,
- size_t* length,
- void** data_p)
+ mbuf_t mbuf,
+ mbuf_tag_id_t id,
+ mbuf_tag_type_t type,
+ size_t *length,
+ void **data_p)
{
struct m_tag *tag;
u_int32_t mtag_id_first, mtag_id_last;
-
+
if (length != NULL)
*length = 0;
if (data_p != NULL)
*data_p = NULL;
-
+
/* Sanity check parameters */
- (void) net_str_id_first_last(&mtag_id_first, &mtag_id_last, NSI_MBUF_TAG);
- if (mbuf == NULL || (mbuf->m_flags & M_PKTHDR) == 0 || id < mtag_id_first ||
- id > mtag_id_last || length == NULL || data_p == NULL) {
- return EINVAL;
+ (void) net_str_id_first_last(&mtag_id_first, &mtag_id_last,
+ NSI_MBUF_TAG);
+ if (mbuf == NULL || (mbuf->m_flags & M_PKTHDR) == 0 ||
+ id < mtag_id_first || id > mtag_id_last || length == NULL ||
+ data_p == NULL) {
+ return (EINVAL);
}
-
+
/* Locate an mtag */
tag = m_tag_locate(mbuf, id, type, NULL);
if (tag == NULL) {
- return ENOENT;
+ return (ENOENT);
}
-
+
/* Copy out the pointer to the data and the lenght value */
*length = tag->m_tag_len;
*data_p = tag + 1;
-
- return 0;
+
+ return (0);
}
void
{
struct m_tag *tag;
u_int32_t mtag_id_first, mtag_id_last;
-
+
/* Sanity check parameters */
- (void) net_str_id_first_last(&mtag_id_first, &mtag_id_last, NSI_MBUF_TAG);
- if (mbuf == NULL || (mbuf->m_flags & M_PKTHDR) == 0 || id < mtag_id_first ||
- id > mtag_id_last)
+ (void) net_str_id_first_last(&mtag_id_first, &mtag_id_last,
+ NSI_MBUF_TAG);
+ if (mbuf == NULL || (mbuf->m_flags & M_PKTHDR) == 0 ||
+ id < mtag_id_first || id > mtag_id_last)
return;
-
+
tag = m_tag_locate(mbuf, id, type, NULL);
if (tag == NULL) {
return;
}
-
+
m_tag_delete(mbuf, tag);
- return;
+}
+
+/*
+ * Maximum length of driver auxiliary data; keep this small to
+ * fit in a single mbuf to avoid wasting memory, rounded down to
+ * the nearest 64-bit boundary. This takes into account mbuf
+ * tag-related (m_taghdr + m_tag) as well m_drvaux_tag structs.
+ */
+#define MBUF_DRVAUX_MAXLEN \
+ P2ROUNDDOWN(MLEN - sizeof (struct m_taghdr) - \
+ M_TAG_ALIGN(sizeof (struct m_drvaux_tag)), sizeof (uint64_t))
+
+errno_t
+mbuf_add_drvaux(mbuf_t mbuf, mbuf_how_t how, u_int32_t family,
+ u_int32_t subfamily, size_t length, void **data_p)
+{
+ struct m_drvaux_tag *p;
+ struct m_tag *tag;
+
+ if (mbuf == NULL || !(mbuf->m_flags & M_PKTHDR) ||
+ length == 0 || length > MBUF_DRVAUX_MAXLEN)
+ return (EINVAL);
+
+ if (data_p != NULL)
+ *data_p = NULL;
+
+ /* Check if one is already associated */
+ if ((tag = m_tag_locate(mbuf, KERNEL_MODULE_TAG_ID,
+ KERNEL_TAG_TYPE_DRVAUX, NULL)) != NULL)
+ return (EEXIST);
+
+ /* Tag is (m_drvaux_tag + module specific data) */
+ if ((tag = m_tag_create(KERNEL_MODULE_TAG_ID, KERNEL_TAG_TYPE_DRVAUX,
+ sizeof (*p) + length, how, mbuf)) == NULL)
+ return ((how == MBUF_WAITOK) ? ENOMEM : EWOULDBLOCK);
+
+ p = (struct m_drvaux_tag *)(tag + 1);
+ p->da_family = family;
+ p->da_subfamily = subfamily;
+ p->da_length = length;
+
+ /* Associate the tag */
+ m_tag_prepend(mbuf, tag);
+
+ if (data_p != NULL)
+ *data_p = (p + 1);
+
+ return (0);
+}
+
+errno_t
+mbuf_find_drvaux(mbuf_t mbuf, u_int32_t *family_p, u_int32_t *subfamily_p,
+ u_int32_t *length_p, void **data_p)
+{
+ struct m_drvaux_tag *p;
+ struct m_tag *tag;
+
+ if (mbuf == NULL || !(mbuf->m_flags & M_PKTHDR) || data_p == NULL)
+ return (EINVAL);
+
+ *data_p = NULL;
+
+ if ((tag = m_tag_locate(mbuf, KERNEL_MODULE_TAG_ID,
+ KERNEL_TAG_TYPE_DRVAUX, NULL)) == NULL)
+ return (ENOENT);
+
+ /* Must be at least size of m_drvaux_tag */
+ VERIFY(tag->m_tag_len >= sizeof (*p));
+
+ p = (struct m_drvaux_tag *)(tag + 1);
+ VERIFY(p->da_length > 0 && p->da_length <= MBUF_DRVAUX_MAXLEN);
+
+ if (family_p != NULL)
+ *family_p = p->da_family;
+ if (subfamily_p != NULL)
+ *subfamily_p = p->da_subfamily;
+ if (length_p != NULL)
+ *length_p = p->da_length;
+
+ *data_p = (p + 1);
+
+ return (0);
+}
+
+void
+mbuf_del_drvaux(mbuf_t mbuf)
+{
+ struct m_tag *tag;
+
+ if (mbuf == NULL || !(mbuf->m_flags & M_PKTHDR))
+ return;
+
+ if ((tag = m_tag_locate(mbuf, KERNEL_MODULE_TAG_ID,
+ KERNEL_TAG_TYPE_DRVAUX, NULL)) != NULL)
+ m_tag_delete(mbuf, tag);
}
/* mbuf stats */
-void mbuf_stats(struct mbuf_stat *stats)
+void
+mbuf_stats(struct mbuf_stat *stats)
{
stats->mbufs = mbstat.m_mbufs;
stats->clusters = mbstat.m_clusters;
}
errno_t
-mbuf_allocpacket(mbuf_how_t how, size_t packetlen, unsigned int *maxchunks, mbuf_t *mbuf)
+mbuf_allocpacket(mbuf_how_t how, size_t packetlen, unsigned int *maxchunks,
+ mbuf_t *mbuf)
{
errno_t error;
struct mbuf *m;
error = EINVAL;
goto out;
}
- m = m_allocpacket_internal(&numpkts, packetlen, maxchunks ? &numchunks : NULL, how, 1, 0);
+ m = m_allocpacket_internal(&numpkts, packetlen,
+ maxchunks ? &numchunks : NULL, how, 1, 0);
if (m == 0) {
if (maxchunks && *maxchunks && numchunks > *maxchunks)
error = ENOBUFS;
*mbuf = m;
}
out:
- return error;
+ return (error);
}
errno_t
-mbuf_allocpacket_list(unsigned int numpkts, mbuf_how_t how, size_t packetlen, unsigned int *maxchunks, mbuf_t *mbuf)
+mbuf_allocpacket_list(unsigned int numpkts, mbuf_how_t how, size_t packetlen,
+ unsigned int *maxchunks, mbuf_t *mbuf)
{
errno_t error;
struct mbuf *m;
error = EINVAL;
goto out;
}
- m = m_allocpacket_internal(&numpkts, packetlen, maxchunks ? &numchunks : NULL, how, 1, 0);
+ m = m_allocpacket_internal(&numpkts, packetlen,
+ maxchunks ? &numchunks : NULL, how, 1, 0);
if (m == 0) {
if (maxchunks && *maxchunks && numchunks > *maxchunks)
error = ENOBUFS;
*mbuf = m;
}
out:
- return error;
+ return (error);
}
+__private_extern__ size_t
+mbuf_pkt_list_len(mbuf_t m)
+{
+ size_t len = 0;
+ mbuf_t n = m;
+ while (n) {
+ len += mbuf_pkthdr_len(n);
+ n = mbuf_nextpkt(n);
+ }
+ return (len);
+}
-/*
+__private_extern__ size_t
+mbuf_pkt_list_maxlen(mbuf_t m)
+{
+ size_t maxlen = 0;
+ mbuf_t n = m;
+
+ while (n) {
+ maxlen += mbuf_pkthdr_maxlen(n);
+ n = mbuf_nextpkt(n);
+ }
+ return (maxlen);
+}
+
+/*
* mbuf_copyback differs from m_copyback in a few ways:
* 1) mbuf_copyback will allocate clusters for new mbufs we append
* 2) mbuf_copyback will grow the last mbuf in the chain if possible
const char *cp = data;
if (m == NULL || len == 0 || data == NULL)
- return EINVAL;
-
+ return (EINVAL);
+
while (off > (mlen = m->m_len)) {
off -= mlen;
totlen += mlen;
}
m = m->m_next;
}
-
+
while (len > 0) {
mlen = MIN(m->m_len - off, len);
- if (mlen < len && m->m_next == NULL && mbuf_trailingspace(m) > 0) {
+ if (mlen < len && m->m_next == NULL &&
+ mbuf_trailingspace(m) > 0) {
size_t grow = MIN(mbuf_trailingspace(m), len - mlen);
mlen += grow;
m->m_len += grow;
}
- bcopy(cp, off + (char*)mbuf_data(m), (unsigned)mlen);
+ bcopy(cp, off + (char *)mbuf_data(m), (unsigned)mlen);
cp += mlen;
len -= mlen;
mlen += off;
goto out;
}
if (len > MINCLSIZE) {
- /* cluter allocation failure is okay, we can grow chain */
+ /*
+ * cluster allocation failure is okay,
+ * we can grow chain
+ */
mbuf_mclget(how, m->m_type, &n);
}
n->m_len = MIN(mbuf_maxlen(n), len);
}
m = m->m_next;
}
-
+
out:
if ((m_start->m_flags & M_PKTHDR) && (m_start->m_pkthdr.len < totlen))
m_start->m_pkthdr.len = totlen;
-
- return result;
+
+ return (result);
}
u_int32_t
return (_MHLEN);
}
-mbuf_priority_t
-mbuf_get_priority(struct mbuf *m)
+u_int32_t
+mbuf_get_minclsize(void)
+{
+ return (MHLEN + MLEN);
+}
+
+u_int32_t
+mbuf_get_traffic_class_max_count(void)
+{
+ return (MBUF_TC_MAX);
+}
+
+errno_t
+mbuf_get_traffic_class_index(mbuf_traffic_class_t tc, u_int32_t *index)
{
-#if !PKT_PRIORITY
-#pragma unused(m)
- return (MBUF_PRIORITY_NORMAL);
-#else /* PKT_PRIORITY */
- mbuf_priority_t prio = MBUF_PRIORITY_NORMAL;
+ if (index == NULL || (u_int32_t)tc >= MBUF_TC_MAX)
+ return (EINVAL);
+
+ *index = MBUF_SCIDX(m_service_class_from_val(MBUF_TC2SCVAL(tc)));
+ return (0);
+}
+mbuf_traffic_class_t
+mbuf_get_traffic_class(mbuf_t m)
+{
if (m == NULL || !(m->m_flags & M_PKTHDR))
- return (prio);
+ return (MBUF_TC_BE);
+
+ return (m_get_traffic_class(m));
+}
+
+errno_t
+mbuf_set_traffic_class(mbuf_t m, mbuf_traffic_class_t tc)
+{
+ if (m == NULL || !(m->m_flags & M_PKTHDR) ||
+ ((u_int32_t)tc >= MBUF_TC_MAX))
+ return (EINVAL);
- /* Defaults to normal; ignore anything else but background */
- if (m->m_pkthdr.prio == MBUF_PRIORITY_BACKGROUND)
- prio = MBUF_PRIORITY_BACKGROUND;
+ return (m_set_traffic_class(m, tc));
+}
+
+int
+mbuf_is_traffic_class_privileged(mbuf_t m)
+{
+ if (m == NULL || !(m->m_flags & M_PKTHDR) ||
+ !MBUF_VALID_SC(m->m_pkthdr.pkt_svc))
+ return (0);
+
+ return ((m->m_pkthdr.pkt_flags & PKTF_PRIO_PRIVILEGED) ? 1 : 0);
+}
+
+u_int32_t
+mbuf_get_service_class_max_count(void)
+{
+ return (MBUF_SC_MAX_CLASSES);
+}
+
+errno_t
+mbuf_get_service_class_index(mbuf_svc_class_t sc, u_int32_t *index)
+{
+ if (index == NULL || !MBUF_VALID_SC(sc))
+ return (EINVAL);
+
+ *index = MBUF_SCIDX(sc);
+ return (0);
+}
+
+mbuf_svc_class_t
+mbuf_get_service_class(mbuf_t m)
+{
+ if (m == NULL || !(m->m_flags & M_PKTHDR))
+ return (MBUF_SC_BE);
+
+ return (m_get_service_class(m));
+}
+
+errno_t
+mbuf_set_service_class(mbuf_t m, mbuf_svc_class_t sc)
+{
+ if (m == NULL || !(m->m_flags & M_PKTHDR))
+ return (EINVAL);
+
+ return (m_set_service_class(m, sc));
+}
+
+errno_t
+mbuf_pkthdr_aux_flags(mbuf_t m, mbuf_pkthdr_aux_flags_t *flagsp)
+{
+ u_int32_t flags;
+
+ if (m == NULL || !(m->m_flags & M_PKTHDR) || flagsp == NULL)
+ return (EINVAL);
- return (prio);
-#endif /* PKT_PRIORITY */
+ *flagsp = 0;
+ flags = m->m_pkthdr.pkt_flags;
+ if ((flags & (PKTF_INET_RESOLVE|PKTF_RESOLVE_RTR)) ==
+ (PKTF_INET_RESOLVE|PKTF_RESOLVE_RTR))
+ *flagsp |= MBUF_PKTAUXF_INET_RESOLVE_RTR;
+ if ((flags & (PKTF_INET6_RESOLVE|PKTF_RESOLVE_RTR)) ==
+ (PKTF_INET6_RESOLVE|PKTF_RESOLVE_RTR))
+ *flagsp |= MBUF_PKTAUXF_INET6_RESOLVE_RTR;
+
+ /* These 2 flags are mutually exclusive */
+ VERIFY((*flagsp &
+ (MBUF_PKTAUXF_INET_RESOLVE_RTR | MBUF_PKTAUXF_INET6_RESOLVE_RTR)) !=
+ (MBUF_PKTAUXF_INET_RESOLVE_RTR | MBUF_PKTAUXF_INET6_RESOLVE_RTR));
+
+ return (0);
+}
+
+errno_t
+mbuf_get_driver_scratch(mbuf_t m, u_int8_t **area, size_t *area_len)
+{
+ if (m == NULL || area == NULL || area_len == NULL ||
+ !(m->m_flags & M_PKTHDR))
+ return (EINVAL);
+
+ *area_len = m_scratch_get(m, area);
+ return (0);
+}
+
+errno_t
+mbuf_get_unsent_data_bytes(const mbuf_t m, u_int32_t *unsent_data)
+{
+ if (m == NULL || unsent_data == NULL || !(m->m_flags & M_PKTHDR))
+ return (EINVAL);
+
+ if (!(m->m_pkthdr.pkt_flags & PKTF_VALID_UNSENT_DATA))
+ return (EINVAL);
+
+ *unsent_data = m->m_pkthdr.bufstatus_if +
+ m->m_pkthdr.bufstatus_sndbuf;
+ return (0);
+}
+
+errno_t
+mbuf_get_buffer_status(const mbuf_t m, mbuf_buffer_status_t *buf_status)
+{
+ if (m == NULL || buf_status == NULL || !(m->m_flags & M_PKTHDR) ||
+ !(m->m_pkthdr.pkt_flags & PKTF_VALID_UNSENT_DATA))
+ return (EINVAL);
+
+ buf_status->buf_interface = m->m_pkthdr.bufstatus_if;
+ buf_status->buf_sndbuf = m->m_pkthdr.bufstatus_sndbuf;
+ return (0);
+}
+
+errno_t
+mbuf_pkt_new_flow(const mbuf_t m, u_int32_t *retval)
+{
+ if (m == NULL || retval == NULL || !(m->m_flags & M_PKTHDR))
+ return (EINVAL);
+ if (m->m_pkthdr.pkt_flags & PKTF_NEW_FLOW)
+ *retval = 1;
+ else
+ *retval = 0;
+ return (0);
+}
+
+errno_t
+mbuf_last_pkt(const mbuf_t m, u_int32_t *retval)
+{
+ if (m == NULL || retval == NULL || !(m->m_flags & M_PKTHDR))
+ return (EINVAL);
+ if (m->m_pkthdr.pkt_flags & PKTF_LAST_PKT)
+ *retval = 1;
+ else
+ *retval = 0;
+ return (0);
+}
+
+errno_t
+mbuf_get_timestamp(mbuf_t m, u_int64_t *ts, boolean_t *valid)
+{
+ if (m == NULL || !(m->m_flags & M_PKTHDR) || ts == NULL)
+ return (EINVAL);
+
+ if ((m->m_pkthdr.pkt_flags & PKTF_TS_VALID) == 0) {
+ if (valid != NULL)
+ *valid = FALSE;
+ *ts = 0;
+ } else {
+ if (valid != NULL)
+ *valid = TRUE;
+ *ts = m->m_pkthdr.pkt_timestamp;
+ }
+ return (0);
+}
+
+errno_t
+mbuf_set_timestamp(mbuf_t m, u_int64_t ts, boolean_t valid)
+{
+ if (m == NULL || !(m->m_flags & M_PKTHDR))
+ return (EINVAL);
+
+ if (valid == FALSE) {
+ m->m_pkthdr.pkt_flags &= ~PKTF_TS_VALID;
+ m->m_pkthdr.pkt_timestamp = 0;
+ } else {
+ m->m_pkthdr.pkt_flags |= PKTF_TS_VALID;
+ m->m_pkthdr.pkt_timestamp = ts;
+ }
+ return (0);
+}
+
+errno_t
+mbuf_get_status(mbuf_t m, kern_return_t *status)
+{
+ if (m == NULL || !(m->m_flags & M_PKTHDR) || status == NULL)
+ return (EINVAL);
+
+ if ((m->m_pkthdr.pkt_flags & PKTF_DRIVER_MTAG) == 0) {
+ *status = 0;
+ } else {
+ *status = m->m_pkthdr.drv_tx_status;
+ }
+ return (0);
+}
+
+static void
+driver_mtag_init(mbuf_t m)
+{
+ if ((m->m_pkthdr.pkt_flags & PKTF_DRIVER_MTAG) == 0) {
+ m->m_pkthdr.pkt_flags |= PKTF_DRIVER_MTAG;
+ bzero(&m->m_pkthdr.driver_mtag,
+ sizeof(m->m_pkthdr.driver_mtag));
+ }
+}
+
+errno_t
+mbuf_set_status(mbuf_t m, kern_return_t status)
+{
+ if (m == NULL || !(m->m_flags & M_PKTHDR))
+ return (EINVAL);
+
+ driver_mtag_init(m);
+
+ m->m_pkthdr.drv_tx_status = status;
+
+ return (0);
+}
+
+errno_t
+mbuf_get_flowid(mbuf_t m, u_int16_t *flowid)
+{
+ if (m == NULL || !(m->m_flags & M_PKTHDR) || flowid == NULL)
+ return (EINVAL);
+
+ if ((m->m_pkthdr.pkt_flags & PKTF_DRIVER_MTAG) == 0) {
+ *flowid = 0;
+ } else {
+ *flowid = m->m_pkthdr.drv_flowid;
+ }
+ return (0);
+}
+
+errno_t
+mbuf_set_flowid(mbuf_t m, u_int16_t flowid)
+{
+ if (m == NULL || !(m->m_flags & M_PKTHDR))
+ return (EINVAL);
+
+ driver_mtag_init(m);
+
+ m->m_pkthdr.drv_flowid = flowid;
+
+ return (0);
+}
+
+errno_t
+mbuf_get_tx_compl_data(mbuf_t m, uintptr_t *arg, uintptr_t *data)
+{
+ if (m == NULL || !(m->m_flags & M_PKTHDR) || arg == NULL ||
+ data == NULL)
+ return (EINVAL);
+
+ if ((m->m_pkthdr.pkt_flags & PKTF_DRIVER_MTAG) == 0) {
+ *arg = 0;
+ *data = 0;
+ } else {
+ *arg = m->m_pkthdr.drv_tx_compl_arg;
+ *data = m->m_pkthdr.drv_tx_compl_data;
+ }
+ return (0);
+}
+
+errno_t
+mbuf_set_tx_compl_data(mbuf_t m, uintptr_t arg, uintptr_t data)
+{
+ if (m == NULL || !(m->m_flags & M_PKTHDR))
+ return (EINVAL);
+
+ driver_mtag_init(m);
+
+ m->m_pkthdr.drv_tx_compl_arg = arg;
+ m->m_pkthdr.drv_tx_compl_data = data;
+
+ return (0);
+}
+
+static u_int32_t
+get_tx_compl_callback_index_locked(mbuf_tx_compl_func callback)
+{
+ u_int32_t i;
+
+ for (i = 0; i < MAX_MBUF_TX_COMPL_FUNC; i++) {
+ if (mbuf_tx_compl_table[i] == callback) {
+ return (i);
+ }
+ }
+ return (UINT32_MAX);
+}
+
+static u_int32_t
+get_tx_compl_callback_index(mbuf_tx_compl_func callback)
+{
+ u_int32_t i;
+
+ lck_rw_lock_shared(mbuf_tx_compl_tbl_lock);
+
+ i = get_tx_compl_callback_index_locked(callback);
+
+ lck_rw_unlock_shared(mbuf_tx_compl_tbl_lock);
+
+ return (i);
+}
+
+errno_t
+mbuf_register_tx_compl_callback(mbuf_tx_compl_func callback)
+{
+ int i;
+ errno_t error;
+
+ if (callback == NULL)
+ return (EINVAL);
+
+ lck_rw_lock_exclusive(mbuf_tx_compl_tbl_lock);
+
+ i = get_tx_compl_callback_index_locked(callback);
+ if (i != -1) {
+ error = EEXIST;
+ goto unlock;
+ }
+
+ /* assume the worst */
+ error = ENOSPC;
+ for (i = 0; i < MAX_MBUF_TX_COMPL_FUNC; i++) {
+ if (mbuf_tx_compl_table[i] == NULL) {
+ mbuf_tx_compl_table[i] = callback;
+ error = 0;
+ goto unlock;
+ }
+ }
+unlock:
+ lck_rw_unlock_exclusive(mbuf_tx_compl_tbl_lock);
+
+ return (error);
+}
+
+errno_t
+mbuf_unregister_tx_compl_callback(mbuf_tx_compl_func callback)
+{
+ int i;
+ errno_t error;
+
+ if (callback == NULL)
+ return (EINVAL);
+
+ lck_rw_lock_exclusive(mbuf_tx_compl_tbl_lock);
+
+ /* assume the worst */
+ error = ENOENT;
+ for (i = 0; i < MAX_MBUF_TX_COMPL_FUNC; i++) {
+ if (mbuf_tx_compl_table[i] == callback) {
+ mbuf_tx_compl_table[i] = NULL;
+ error = 0;
+ goto unlock;
+ }
+ }
+unlock:
+ lck_rw_unlock_exclusive(mbuf_tx_compl_tbl_lock);
+
+ return (error);
+}
+
+errno_t
+mbuf_get_timestamp_requested(mbuf_t m, boolean_t *requested)
+{
+ if (m == NULL || !(m->m_flags & M_PKTHDR))
+ return (EINVAL);
+
+ if ((m->m_pkthdr.pkt_flags & PKTF_TX_COMPL_TS_REQ) == 0) {
+ *requested = FALSE;
+ } else {
+ *requested = TRUE;
+ }
+ return (0);
+}
+
+errno_t
+mbuf_set_timestamp_requested(mbuf_t m, uintptr_t *pktid,
+ mbuf_tx_compl_func callback)
+{
+ size_t i;
+
+ if (m == NULL || !(m->m_flags & M_PKTHDR) || callback == NULL ||
+ pktid == NULL)
+ return (EINVAL);
+
+ i = get_tx_compl_callback_index(callback);
+ if (i == UINT32_MAX)
+ return (ENOENT);
+
+#if (DEBUG || DEVELOPMENT)
+ VERIFY(i < sizeof(m->m_pkthdr.pkt_compl_callbacks));
+#endif /* (DEBUG || DEVELOPMENT) */
+
+ if ((m->m_pkthdr.pkt_flags & PKTF_TX_COMPL_TS_REQ) == 0) {
+ m->m_pkthdr.pkt_compl_callbacks = 0;
+ m->m_pkthdr.pkt_flags |= PKTF_TX_COMPL_TS_REQ;
+ m->m_pkthdr.pkt_compl_context =
+ atomic_add_32_ov(&mbuf_tx_compl_index, 1);
+
+#if (DEBUG || DEVELOPMENT)
+ if (mbuf_tx_compl_debug != 0) {
+ OSIncrementAtomic64(&mbuf_tx_compl_outstanding);
+ }
+#endif /* (DEBUG || DEVELOPMENT) */
+ }
+ m->m_pkthdr.pkt_compl_callbacks |= (1 << i);
+ *pktid = m->m_pkthdr.pkt_compl_context;
+
+ return (0);
+}
+
+void
+m_do_tx_compl_callback(struct mbuf *m, struct ifnet *ifp)
+{
+ int i;
+
+ if (m == NULL)
+ return;
+
+ if ((m->m_pkthdr.pkt_flags & PKTF_TX_COMPL_TS_REQ) == 0)
+ return;
+
+#if (DEBUG || DEVELOPMENT)
+ if (mbuf_tx_compl_debug != 0 && ifp != NULL &&
+ (ifp->if_xflags & IFXF_TIMESTAMP_ENABLED) != 0 &&
+ (m->m_pkthdr.pkt_flags & PKTF_TS_VALID) == 0) {
+ struct timespec now;
+
+ nanouptime(&now);
+ net_timernsec(&now, &m->m_pkthdr.pkt_timestamp);
+ }
+#endif /* (DEBUG || DEVELOPMENT) */
+
+ for (i = 0; i < MAX_MBUF_TX_COMPL_FUNC; i++) {
+ mbuf_tx_compl_func callback;
+
+ if ((m->m_pkthdr.pkt_compl_callbacks & (1 << i)) == 0)
+ continue;
+
+ lck_rw_lock_shared(mbuf_tx_compl_tbl_lock);
+ callback = mbuf_tx_compl_table[i];
+ lck_rw_unlock_shared(mbuf_tx_compl_tbl_lock);
+
+ if (callback != NULL) {
+ callback(m->m_pkthdr.pkt_compl_context,
+ ifp,
+ (m->m_pkthdr.pkt_flags & PKTF_TS_VALID) ?
+ m->m_pkthdr.pkt_timestamp: 0,
+ m->m_pkthdr.drv_tx_compl_arg,
+ m->m_pkthdr.drv_tx_compl_data,
+ m->m_pkthdr.drv_tx_status);
+ }
+ }
+ m->m_pkthdr.pkt_compl_callbacks = 0;
+
+#if (DEBUG || DEVELOPMENT)
+ if (mbuf_tx_compl_debug != 0) {
+ OSDecrementAtomic64(&mbuf_tx_compl_outstanding);
+ if (ifp == NULL)
+ atomic_add_64(&mbuf_tx_compl_aborted, 1);
+ }
+#endif /* (DEBUG || DEVELOPMENT) */
}
projects / apple / xnu.git / blobdiff