/*
- * Copyright (c) 2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2004-2019 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_OSREFERENCE_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.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * 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.
*
- * 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
+ * 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_LICENSE_OSREFERENCE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#define __KPI__
-//#include <sys/kpi_interface.h>
#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>
-
-void mbuf_tag_id_first_last(u_long *first, u_long *last);
-errno_t mbuf_tag_id_find_internal(const char *string, u_long *out_id, int create);
-
-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;
-
-void* mbuf_data(mbuf_t mbuf)
-{
- return m_mtod(mbuf);
-}
-
-void* mbuf_datastart(mbuf_t mbuf)
-{
- if (mbuf->m_flags & M_EXT)
+#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)
+ }
+ 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)
+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)
+ 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)
+errno_t
+mbuf_align_32(mbuf_t mbuf, size_t len)
{
- if ((mbuf->m_flags & M_EXT) != 0 && m_mclhasreference(mbuf))
+ 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));
-
+ 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)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),
+ 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;
}
-extern struct mbuf * m_mbigget(struct mbuf *m, int nowait);
+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)
+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;
+ errno_t error = 0;
+ int created = 0;
- if (mbuf == NULL)
+ if (mbuf == NULL) {
return EINVAL;
+ }
if (*mbuf == NULL) {
*mbuf = m_get(how, type);
- if (*mbuf == NULL)
+ if (*mbuf == NULL) {
return ENOMEM;
+ }
created = 1;
}
/*
- * At the time this code was written, m_mclget and m_mbigget would always
- * return the same value that was passed in to it.
+ * 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 == NBPG) {
+ } 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)
+ if (*mbuf == NULL || ((*mbuf)->m_flags & M_EXT) == 0) {
error = ENOMEM;
+ }
out:
if (created && error != 0) {
- error = ENOMEM;
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;
+ errno_t error = 0;
+ int created = 0;
+ if (mbuf == NULL) {
+ return EINVAL;
+ }
if (*mbuf == NULL) {
error = mbuf_get(how, type, mbuf);
- if (error)
+ 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)
+ 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;
-
+ errno_t error = 0;
+
*mbuf = m_getpacket_how(how);
-
+
if (*mbuf == NULL) {
- if (how == MBUF_WAITOK)
+ if (how == MBUF_WAITOK) {
error = ENOMEM;
- else
+ } else {
error = EWOULDBLOCK;
+ }
}
-
+
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);
}
-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);
}
-size_t mbuf_leadingspace(mbuf_t mbuf)
+size_t
+mbuf_leadingspace(const mbuf_t mbuf)
{
- return m_leadingspace(mbuf);
+ return M_LEADINGSPACE(mbuf);
}
-size_t mbuf_trailingspace(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(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(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,
- mbuf_how_t how, mbuf_t *new_mbuf)
+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_copydata(mbuf_t m, size_t off, size_t len, void* out_data)
+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;
+ size_t count;
+ mbuf_t m = m0;
+
+ if (off >= INT_MAX || len >= INT_MAX) {
+ return EINVAL;
+ }
while (off > 0) {
- if (m == 0)
+ if (m == 0) {
return EINVAL;
- if (off < (size_t)m->m_len)
+ }
+ if (off < (size_t)m->m_len) {
break;
+ }
off -= m->m_len;
m = m->m_next;
}
while (len > 0) {
- if (m == 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;
+ out_data = ((char *)out_data) + count;
off = 0;
m = m->m_next;
}
-
- return 0;
-}
-int mbuf_mclref(mbuf_t mbuf)
-{
- return m_mclref(mbuf);
-}
-
-int mbuf_mclunref(mbuf_t mbuf)
-{
- return m_mclunref(mbuf);
+ return 0;
}
-int mbuf_mclhasreference(mbuf_t mbuf)
+int
+mbuf_mclhasreference(mbuf_t mbuf)
{
- if ((mbuf->m_flags & M_EXT))
+ if ((mbuf->m_flags & M_EXT)) {
return m_mclhasreference(mbuf);
- else
+ } else {
return 0;
+ }
}
/* mbuf header */
-mbuf_t mbuf_next(mbuf_t mbuf)
+mbuf_t
+mbuf_next(const mbuf_t mbuf)
{
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;
}
-mbuf_t mbuf_nextpkt(mbuf_t mbuf)
+mbuf_t
+mbuf_nextpkt(const mbuf_t mbuf)
{
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(mbuf_t mbuf)
+size_t
+mbuf_len(const mbuf_t mbuf)
{
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(mbuf_t mbuf)
+size_t
+mbuf_maxlen(const mbuf_t mbuf)
{
- if (mbuf->m_flags & M_EXT)
+ if (mbuf->m_flags & M_EXT) {
return mbuf->m_ext.ext_size;
- return &mbuf->m_dat[MLEN] - ((char*)mbuf_datastart(mbuf));
+ }
+ return &mbuf->m_dat[MLEN] - ((char *)mbuf_datastart(mbuf));
}
-mbuf_type_t mbuf_type(mbuf_t 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)
+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;
}
-mbuf_flags_t mbuf_flags(mbuf_t mbuf)
+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
+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, mbuf_t src)
+errno_t
+mbuf_copy_pkthdr(mbuf_t dest, const mbuf_t src)
{
- if (((src)->m_flags & M_PKTHDR) == 0)
+ if (((src)->m_flags & M_PKTHDR) == 0) {
return EINVAL;
-
+ }
+
m_copy_pkthdr(dest, src);
-
+
return 0;
}
-size_t mbuf_pkthdr_len(mbuf_t mbuf)
+size_t
+mbuf_pkthdr_len(const mbuf_t mbuf)
{
+ if (((mbuf)->m_flags & M_PKTHDR) == 0) {
+ return 0;
+ }
+ /*
+ * While we Assert for development or debug builds,
+ * also make sure we never return negative length
+ * for release build.
+ */
+ ASSERT(mbuf->m_pkthdr.len >= 0);
+ if (mbuf->m_pkthdr.len < 0) {
+ return 0;
+ }
return mbuf->m_pkthdr.len;
}
-void mbuf_pkthdr_setlen(mbuf_t mbuf, size_t len)
+__private_extern__ size_t
+mbuf_pkthdr_maxlen(mbuf_t m)
{
- mbuf->m_pkthdr.len = len;
-}
+ size_t maxlen = 0;
+ mbuf_t n = m;
-ifnet_t mbuf_pkthdr_rcvif(mbuf_t mbuf)
-{
- // If we reference count ifnets, we should take a reference here before returning
- return mbuf->m_pkthdr.rcvif;
+ while (n) {
+ maxlen += mbuf_maxlen(n);
+ n = mbuf_next(n);
+ }
+ return maxlen;
}
-errno_t mbuf_pkthdr_setrcvif(mbuf_t mbuf, ifnet_t ifnet)
+void
+mbuf_pkthdr_setlen(mbuf_t mbuf, size_t len)
{
- /* May want to walk ifnet list to determine if interface is valid */
- mbuf->m_pkthdr.rcvif = (struct ifnet*)ifnet;
- return 0;
+ if (len > INT32_MAX) {
+ len = INT32_MAX;
+ }
+
+ mbuf->m_pkthdr.len = len;
}
-void* mbuf_pkthdr_header(mbuf_t mbuf)
+void
+mbuf_pkthdr_adjustlen(mbuf_t mbuf, int amount)
{
- return mbuf->m_pkthdr.header;
+ mbuf->m_pkthdr.len += amount;
}
-void mbuf_pkthdr_setheader(mbuf_t mbuf, void *header)
+ifnet_t
+mbuf_pkthdr_rcvif(const mbuf_t mbuf)
{
- mbuf->m_pkthdr.header = (void*)header;
+ /*
+ * If we reference count ifnets, we should take a reference here
+ * before returning
+ */
+ return mbuf->m_pkthdr.rcvif;
}
-/* mbuf aux data */
-errno_t mbuf_aux_add(mbuf_t mbuf, int family, mbuf_type_t type, mbuf_t *aux_mbuf)
+errno_t
+mbuf_pkthdr_setrcvif(mbuf_t mbuf, ifnet_t ifnet)
{
- *aux_mbuf = m_aux_add(mbuf, family, type);
- return (*aux_mbuf == NULL) ? ENOMEM : 0;
+ /* May want to walk ifnet list to determine if interface is valid */
+ mbuf->m_pkthdr.rcvif = (struct ifnet *)ifnet;
+ return 0;
}
-mbuf_t mbuf_aux_find(mbuf_t mbuf, int family, mbuf_type_t type)
+void*
+mbuf_pkthdr_header(const mbuf_t mbuf)
{
- return m_aux_find(mbuf, family, type);
+ return mbuf->m_pkthdr.pkt_hdr;
}
-void mbuf_aux_delete(mbuf_t mbuf, mbuf_t aux)
+void
+mbuf_pkthdr_setheader(mbuf_t mbuf, void *header)
{
- m_aux_delete(mbuf, aux);
+ 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_long 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 (%d)!\n", protocol_family);
+ switch (pf) {
+ case PF_INET:
+ (void) in_finalize_cksum(m, o, m->m_pkthdr.csum_flags);
+ break;
+
+ case PF_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);
+ break;
+
+ default:
+ break;
}
}
{
mbuf->m_pkthdr.csum_flags |= CSUM_VLAN_TAG_VALID;
mbuf->m_pkthdr.vlan_tag = vlan;
-
+
return 0;
}
mbuf_t mbuf,
u_int16_t *vlan)
{
- if ((mbuf->m_pkthdr.csum_flags & CSUM_VLAN_TAG_VALID) == 0)
+ 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;
}
{
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_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;
+}
+
+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;
}
if (value != NULL) {
*value = mbuf->m_pkthdr.csum_data;
}
-
+
return 0;
}
{
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_TCP_SUM16;
+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(
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;
}
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;
}
{
mbuf->m_pkthdr.csum_flags &= 0xffff0000;
mbuf->m_pkthdr.csum_data = 0;
-
+
return 0;
}
-/*
- * Mbuf tag KPIs
- */
-
-struct mbuf_tag_id_entry {
- SLIST_ENTRY(mbuf_tag_id_entry) next;
- mbuf_tag_id_t id;
- char string[];
-};
-
-#define MBUF_TAG_ID_ENTRY_SIZE(__str) \
- ((size_t)&(((struct mbuf_tag_id_entry*)0)->string[0]) + \
- strlen(__str) + 1)
-
-#define MTAG_FIRST_ID 1000
-static u_long mtag_id_next = MTAG_FIRST_ID;
-static SLIST_HEAD(,mbuf_tag_id_entry) mtag_id_list = {NULL};
-static lck_mtx_t *mtag_id_lock = NULL;
-
-__private_extern__ void
-mbuf_tag_id_first_last(
- u_long *first,
- u_long *last)
+errno_t
+mbuf_inet_cksum(mbuf_t mbuf, int protocol, u_int32_t offset, u_int32_t length,
+ u_int16_t *csum)
{
- *first = MTAG_FIRST_ID;
- *last = mtag_id_next - 1;
+ 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;
}
-__private_extern__ errno_t
-mbuf_tag_id_find_internal(
- const char *string,
- u_long *out_id,
- int create)
+errno_t
+mbuf_inet6_cksum(mbuf_t mbuf, int protocol, u_int32_t offset, u_int32_t length,
+ u_int16_t *csum)
{
- struct mbuf_tag_id_entry *entry = NULL;
-
-
- *out_id = 0;
-
- if (string == NULL || out_id == NULL) {
+ if (mbuf == NULL || length == 0 || csum == NULL ||
+ (u_int32_t)mbuf->m_pkthdr.len < (offset + length)) {
return EINVAL;
}
-
- /* Don't bother allocating the lock if we're only doing a lookup */
- if (create == 0 && mtag_id_lock == NULL)
- return ENOENT;
-
- /* Allocate lock if necessary */
- if (mtag_id_lock == NULL) {
- lck_grp_attr_t *grp_attrib = NULL;
- lck_attr_t *lck_attrb = NULL;
- lck_grp_t *lck_group = NULL;
- lck_mtx_t *new_lock = NULL;
-
- grp_attrib = lck_grp_attr_alloc_init();
- lck_group = lck_grp_alloc_init("mbuf_tag_allocate_id", grp_attrib);
- lck_grp_attr_free(grp_attrib);
- lck_attrb = lck_attr_alloc_init();
-
- new_lock = lck_mtx_alloc_init(lck_group, lck_attrb);
- if (!OSCompareAndSwap((UInt32)0, (UInt32)new_lock, (UInt32*)&mtag_id_lock)) {
- /*
- * If the atomic swap fails, someone else has already
- * done this work. We can free the stuff we allocated.
- */
- lck_mtx_free(new_lock, lck_group);
- lck_grp_free(lck_group);
- }
- lck_attr_free(lck_attrb);
- }
-
- /* Look for an existing entry */
- lck_mtx_lock(mtag_id_lock);
- SLIST_FOREACH(entry, &mtag_id_list, next) {
- if (strcmp(string, entry->string) == 0) {
- break;
- }
- }
-
- if (entry == NULL) {
- if (create == 0) {
- lck_mtx_unlock(mtag_id_lock);
- return ENOENT;
- }
-
- entry = kalloc(MBUF_TAG_ID_ENTRY_SIZE(string));
- if (entry == NULL) {
- lck_mtx_unlock(mtag_id_lock);
- return ENOMEM;
- }
-
- strcpy(entry->string, string);
- entry->id = mtag_id_next;
- mtag_id_next++;
- SLIST_INSERT_HEAD(&mtag_id_list, entry, next);
- }
- lck_mtx_unlock(mtag_id_lock);
-
- *out_id = entry->id;
-
+
+ *csum = inet6_cksum(mbuf, protocol, offset, length);
return 0;
}
+/*
+ * 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)
+ const char *string,
+ mbuf_tag_id_t *out_id)
{
- return mbuf_tag_id_find_internal(string, (u_long*)out_id, 1);
+ 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,
- mbuf_how_t how,
- void** data_p)
+ mbuf_t mbuf,
+ mbuf_tag_id_t id,
+ mbuf_tag_type_t type,
+ size_t length,
+ mbuf_how_t how,
+ void** data_p)
{
struct m_tag *tag;
-
- if (data_p != NULL)
+ u_int32_t mtag_id_first, mtag_id_last;
+
+ if (data_p != NULL) {
*data_p = NULL;
-
+ }
+
/* Sanity check parameters */
- if (mbuf == NULL || (mbuf->m_flags & M_PKTHDR) == 0 || id < MTAG_FIRST_ID ||
- id >= mtag_id_next || length < 1 || (length & 0xffff0000) != 0 ||
- data_p == NULL) {
+ (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;
}
-
+
/* 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;
}
-
+
/* Attach the mtag and set *data_p */
m_tag_prepend(mbuf, tag);
*data_p = tag + 1;
-
+
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;
-
- if (length != NULL)
+ u_int32_t mtag_id_first, mtag_id_last;
+
+ if (length != NULL) {
*length = 0;
- if (data_p != NULL)
+ }
+ if (data_p != NULL) {
*data_p = NULL;
-
+ }
+
/* Sanity check parameters */
- if (mbuf == NULL || (mbuf->m_flags & M_PKTHDR) == 0 || id < MTAG_FIRST_ID ||
- id >= mtag_id_next || length == NULL || data_p == NULL) {
+ (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;
}
-
+
/* Copy out the pointer to the data and the lenght value */
*length = tag->m_tag_len;
*data_p = tag + 1;
-
+
return 0;
}
void
mbuf_tag_free(
- mbuf_t mbuf,
- mbuf_tag_id_t id,
- mbuf_tag_type_t type)
+ mbuf_t mbuf,
+ mbuf_tag_id_t id,
+ mbuf_tag_type_t type)
{
struct m_tag *tag;
-
- if (mbuf == NULL || (mbuf->m_flags & M_PKTHDR) == 0 || id < MTAG_FIRST_ID ||
- id >= mtag_id_next)
+ 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) {
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;
+ } else {
+ error = ENOMEM;
+ }
+ } else {
+ if (maxchunks) {
+ *maxchunks = numchunks;
+ }
+ error = 0;
+ *mbuf = m;
+ }
+out:
+ return error;
+}
+
+errno_t
+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;
+ unsigned int numchunks = maxchunks ? *maxchunks : 0;
+
+ if (numpkts == 0) {
+ error = EINVAL;
+ goto out;
+ }
+ if (packetlen == 0) {
+ error = EINVAL;
+ goto out;
+ }
+ m = m_allocpacket_internal(&numpkts, packetlen,
+ maxchunks ? &numchunks : NULL, how, 1, 0);
if (m == 0) {
- if (maxchunks && *maxchunks && numchunks > *maxchunks)
+ if (maxchunks && *maxchunks && numchunks > *maxchunks) {
error = ENOBUFS;
- else
+ } else {
error = ENOMEM;
+ }
} else {
+ if (maxchunks) {
+ *maxchunks = numchunks;
+ }
error = 0;
*mbuf = m;
}
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:
*/
errno_t
mbuf_copyback(
- mbuf_t m,
- size_t off,
- size_t len,
- const void *data,
- mbuf_how_t how)
-{
- size_t mlen;
- mbuf_t m_start = m;
- mbuf_t n;
- int totlen = 0;
- errno_t result = 0;
- const char *cp = data;
-
- if (m == NULL || len == 0 || data == NULL)
- return EINVAL;
-
+ mbuf_t m,
+ size_t off,
+ size_t len,
+ const void *data,
+ mbuf_how_t how)
+{
+ size_t mlen;
+ mbuf_t m_start = m;
+ mbuf_t n;
+ int totlen = 0;
+ errno_t result = 0;
+ const char *cp = data;
+
+ if (m == NULL || len == 0 || data == NULL) {
+ 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) {
- size_t grow = MIN(mbuf_trailingspace(m), len - mlen);
+ 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;
off = 0;
totlen += mlen;
- if (len == 0)
+ if (len == 0) {
break;
+ }
if (m->m_next == 0) {
n = m_get(how, m->m_type);
if (n == NULL) {
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))
+ if ((m_start->m_flags & M_PKTHDR) && (m_start->m_pkthdr.len < totlen)) {
m_start->m_pkthdr.len = totlen;
-
+ }
+
return result;
}
+
+u_int32_t
+mbuf_get_mlen(void)
+{
+ return _MLEN;
+}
+
+u_int32_t
+mbuf_get_mhlen(void)
+{
+ return _MHLEN;
+}
+
+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 (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 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;
+ }
+
+ 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;
+ }
+
+ *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;
+}
+
+mbuf_tx_compl_func
+m_get_tx_compl_callback(u_int32_t idx)
+{
+ mbuf_tx_compl_func cb;
+
+ if (idx >= MAX_MBUF_TX_COMPL_FUNC) {
+ ASSERT(0);
+ return NULL;
+ }
+ lck_rw_lock_shared(mbuf_tx_compl_tbl_lock);
+ cb = mbuf_tx_compl_table[idx];
+ lck_rw_unlock_shared(mbuf_tx_compl_tbl_lock);
+ return cb;
+}
+
+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) */
+}
+
+errno_t
+mbuf_get_keepalive_flag(mbuf_t m, boolean_t *is_keepalive)
+{
+ if (m == NULL || is_keepalive == NULL || !(m->m_flags & M_PKTHDR)) {
+ return EINVAL;
+ }
+
+ *is_keepalive = (m->m_pkthdr.pkt_flags & PKTF_KEEPALIVE);
+
+ return 0;
+}
+
+errno_t
+mbuf_set_keepalive_flag(mbuf_t m, boolean_t is_keepalive)
+{
+ if (m == NULL || !(m->m_flags & M_PKTHDR)) {
+ return EINVAL;
+ }
+
+ if (is_keepalive) {
+ m->m_pkthdr.pkt_flags |= PKTF_KEEPALIVE;
+ } else {
+ m->m_pkthdr.pkt_flags &= ~PKTF_KEEPALIVE;
+ }
+
+ return 0;
+}
projects / apple / xnu.git / blobdiff