/*
* Copyright (c) 2004-2024 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* if_bond.c
* - bond/failover interface
* - implements IEEE 802.3ad Link Aggregation
*/
/*
* Modification History:
*
* April 29, 2004 Dieter Siegmund (dieter@apple.com)
* - created
*/
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/queue.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/sysctl.h>
#include <sys/systm.h>
#include <sys/kern_event.h>
#include <net/bpf.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <net/kpi_interface.h>
#include <net/if_arp.h>
#include <net/if_dl.h>
#include <net/if_ether.h>
#include <net/if_types.h>
#include <net/if_bond_var.h>
#include <net/ieee8023ad.h>
#include <net/lacp.h>
#include <net/dlil.h>
#include <sys/time.h>
#include <net/devtimer.h>
#include <net/if_vlan_var.h>
#include <net/kpi_protocol.h>
#include <sys/protosw.h>
#include <kern/locks.h>
#include <kern/uipc_domain.h>
#include <kern/zalloc.h>
#include <os/refcnt.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip6.h>
#include <net/if_media.h>
#include <net/multicast_list.h>
#include <net/sockaddr_utils.h>
#include <net/mblist.h>
static struct ether_addr slow_proto_multicast = {
.octet = IEEE8023AD_SLOW_PROTO_MULTICAST
};
typedef struct ifbond_s ifbond, *__single ifbond_ref;
typedef struct bondport_s bondport, *__single bondport_ref;
#define BOND_MAXUNIT 128
#define BOND_ZONE_MAX_ELEM MIN(IFNETS_MAX, BOND_MAXUNIT)
#define BONDNAME "bond"
#define EA_FORMAT "%x:%x:%x:%x:%x:%x"
#define EA_CH(e, i) ((u_char)((u_char *)(e))[(i)])
#define EA_LIST(ea) EA_CH(ea,0),EA_CH(ea,1),EA_CH(ea,2),EA_CH(ea,3),EA_CH(ea,4),EA_CH(ea,5)
/*
* if_bond_debug, BD_DBGF_*
* - 'if_bond_debug' is a bitmask of BD_DBGF_* flags that can be set
* to enable additional logs for the corresponding bond function
* - "sysctl net.link.bond.debug" controls the value of
* 'if_bond_debug'
*/
static uint32_t if_bond_debug = 0;
#define BD_DBGF_LIFECYCLE 0x0001
#define BD_DBGF_INPUT 0x0002
#define BD_DBGF_OUTPUT 0x0004
#define BD_DBGF_LACP 0x0008
/*
* if_bond_log_level
* - 'if_bond_log_level' ensures that by default important logs are
* logged regardless of if_bond_debug by comparing the log level
* in BOND_LOG to if_bond_log_level
* - use "sysctl net.link.bond.log_level" controls the value of
* 'if_bond_log_level'
* - the default value of 'if_bond_log_level' is LOG_NOTICE; important
* logs must use LOG_NOTICE to ensure they appear by default
*/
static int if_bond_log_level = LOG_NOTICE;
#define BOND_DBGF_ENABLED(__flag) ((if_bond_debug & __flag) != 0)
/*
* BOND_LOG, BOND_LOG_SIMPLE
* - macros to generate the specified log conditionally based on
* the specified log level and debug flags
* - BOND_LOG_SIMPLE does not include the function name in the log
*/
#define BOND_LOG(__level, __dbgf, __string, ...) \
do { \
if (__level <= if_bond_log_level || \
BOND_DBGF_ENABLED(__dbgf)) { \
os_log(OS_LOG_DEFAULT, "%s: " __string, \
__func__, ## __VA_ARGS__); \
} \
} while (0)
#define BOND_LOG_SIMPLE(__level, __dbgf, __string, ...) \
do { \
if (__level <= if_bond_log_level || \
BOND_DBGF_ENABLED(__dbgf)) { \
os_log(OS_LOG_DEFAULT, __string, ## __VA_ARGS__); \
} \
} while (0)
SYSCTL_DECL(_net_link);
SYSCTL_NODE(_net_link, OID_AUTO, bond, CTLFLAG_RW | CTLFLAG_LOCKED, 0,
"Bond interface");
SYSCTL_INT(_net_link_bond, OID_AUTO, debug, CTLFLAG_RW | CTLFLAG_LOCKED,
&if_bond_debug, 0, "Bond interface debug flags");
SYSCTL_INT(_net_link_bond, OID_AUTO, log_level, CTLFLAG_RW | CTLFLAG_LOCKED,
&if_bond_log_level, 0, "Bond interface log level");
/**
** bond locks
**/
static LCK_GRP_DECLARE(bond_lck_grp, "if_bond");
static LCK_MTX_DECLARE(bond_lck_mtx, &bond_lck_grp);
static __inline__ void
bond_assert_lock_held(void)
{
LCK_MTX_ASSERT(&bond_lck_mtx, LCK_MTX_ASSERT_OWNED);
}
static __inline__ void
bond_assert_lock_not_held(void)
{
LCK_MTX_ASSERT(&bond_lck_mtx, LCK_MTX_ASSERT_NOTOWNED);
}
static __inline__ void
bond_lock(void)
{
lck_mtx_lock(&bond_lck_mtx);
}
static __inline__ void
bond_unlock(void)
{
lck_mtx_unlock(&bond_lck_mtx);
}
/**
** bond structures, types
**/
struct LAG_info_s {
lacp_system li_system;
lacp_system_priority li_system_priority;
lacp_key li_key;
};
typedef struct LAG_info_s LAG_info, * LAG_info_ref;
struct bondport_s;
TAILQ_HEAD(port_list, bondport_s);
struct ifbond_s;
TAILQ_HEAD(ifbond_list, ifbond_s);
struct LAG_s;
TAILQ_HEAD(lag_list, LAG_s);
struct LAG_s {
TAILQ_ENTRY(LAG_s) lag_list;
struct port_list lag_port_list;
short lag_port_count;
short lag_selected_port_count;
int lag_active_media;
LAG_info lag_info;
};
typedef struct LAG_s LAG, * LAG_ref;
typedef struct partner_state_s {
LAG_info ps_lag_info;
lacp_port ps_port;
lacp_port_priority ps_port_priority;
lacp_actor_partner_state ps_state;
} partner_state, * partner_state_ref;
struct ifbond_s {
TAILQ_ENTRY(ifbond_s) ifb_bond_list;
int ifb_flags;
struct os_refcnt ifb_retain_count;
char ifb_name[IFNAMSIZ];
struct ifnet * ifb_ifp;
int ifb_altmtu;
struct port_list ifb_port_list;
short ifb_port_count;
struct lag_list ifb_lag_list;
lacp_key ifb_key;
short ifb_max_active;/* 0 == unlimited */
LAG_ref ifb_active_lag;
struct ifmultiaddr * ifb_ifma_slow_proto;
bondport_ref *__counted_by(ifb_distributing_max) ifb_distributing_array;
int ifb_distributing_count;
int ifb_distributing_max;
int ifb_last_link_event;
int ifb_mode;/* LACP, STATIC */
};
struct media_info {
int mi_active;
int mi_status;
};
enum {
ReceiveState_none = 0,
ReceiveState_INITIALIZE = 1,
ReceiveState_PORT_DISABLED = 2,
ReceiveState_EXPIRED = 3,
ReceiveState_LACP_DISABLED = 4,
ReceiveState_DEFAULTED = 5,
ReceiveState_CURRENT = 6,
};
typedef u_char ReceiveState;
enum {
SelectedState_UNSELECTED = IF_BOND_STATUS_SELECTED_STATE_UNSELECTED,
SelectedState_SELECTED = IF_BOND_STATUS_SELECTED_STATE_SELECTED,
SelectedState_STANDBY = IF_BOND_STATUS_SELECTED_STATE_STANDBY
};
typedef u_char SelectedState;
static __inline__ const char *
SelectedStateString(SelectedState s)
{
static const char * names[] = { "UNSELECTED", "SELECTED", "STANDBY" };
if (s <= SelectedState_STANDBY) {
return names[s];
}
return "<unknown>";
}
enum {
MuxState_none = 0,
MuxState_DETACHED = 1,
MuxState_WAITING = 2,
MuxState_ATTACHED = 3,
MuxState_COLLECTING_DISTRIBUTING = 4,
};
typedef u_char MuxState;
#define PORT_CONTROL_FLAGS_IN_LIST 0x01
#define PORT_CONTROL_FLAGS_PROTO_ATTACHED 0x02
#define PORT_CONTROL_FLAGS_LLADDR_SET 0x04
#define PORT_CONTROL_FLAGS_MTU_SET 0x08
#define PORT_CONTROL_FLAGS_PROMISCUOUS_SET 0x10
#define PORT_CONTROL_FLAGS_BOND_PROMISCUOUS_SET 0x20
static inline bool
uint32_bit_is_set(uint32_t flags, uint32_t flags_to_test)
{
return (flags & flags_to_test) != 0;
}
static inline void
uint32_bit_set(uint32_t * flags_p, uint32_t flags_to_set)
{
*flags_p |= flags_to_set;
}
static inline void
uint32_bit_clear(uint32_t * flags_p, uint32_t flags_to_clear)
{
*flags_p &= ~flags_to_clear;
}
struct bondport_s {
TAILQ_ENTRY(bondport_s) po_port_list;
ifbond_ref po_bond;
struct multicast_list po_multicast;
struct ifnet * po_ifp;
struct ether_addr po_saved_addr;
int po_enabled;
char po_name[IFNAMSIZ];
struct ifdevmtu po_devmtu;
uint32_t po_control_flags;
/* LACP */
TAILQ_ENTRY(bondport_s) po_lag_port_list;
devtimer_ref po_current_while_timer;
devtimer_ref po_periodic_timer;
devtimer_ref po_wait_while_timer;
devtimer_ref po_transmit_timer;
partner_state po_partner_state;
lacp_port_priority po_priority;
lacp_actor_partner_state po_actor_state;
u_char po_flags;
u_char po_periodic_interval;
u_char po_n_transmit;
ReceiveState po_receive_state;
MuxState po_mux_state;
SelectedState po_selected;
int32_t po_last_transmit_secs;
struct media_info po_media_info;
uint64_t po_force_link_event_time;
LAG_ref po_lag;
};
#define IFBF_PROMISC 0x1 /* promiscuous mode */
#define IFBF_IF_DETACHING 0x2 /* interface is detaching */
#define IFBF_LLADDR 0x4 /* specific link address requested */
#define IFBF_CHANGE_IN_PROGRESS 0x8 /* interface add/remove in progress */
static int bond_get_status(ifbond_ref ifb, struct if_bond_req * ibr_p,
user_addr_t datap);
static __inline__ bool
ifbond_flags_if_detaching(ifbond_ref ifb)
{
return (ifb->ifb_flags & IFBF_IF_DETACHING) != 0;
}
static __inline__ void
ifbond_flags_set_if_detaching(ifbond_ref ifb)
{
ifb->ifb_flags |= IFBF_IF_DETACHING;
return;
}
static __inline__ bool
ifbond_flags_lladdr(ifbond_ref ifb)
{
return (ifb->ifb_flags & IFBF_LLADDR) != 0;
}
static __inline__ bool
ifbond_flags_change_in_progress(ifbond_ref ifb)
{
return (ifb->ifb_flags & IFBF_CHANGE_IN_PROGRESS) != 0;
}
static __inline__ void
ifbond_flags_set_change_in_progress(ifbond_ref ifb)
{
ifb->ifb_flags |= IFBF_CHANGE_IN_PROGRESS;
return;
}
static __inline__ void
ifbond_flags_clear_change_in_progress(ifbond_ref ifb)
{
ifb->ifb_flags &= ~IFBF_CHANGE_IN_PROGRESS;
return;
}
static __inline__ bool
ifbond_flags_promisc(ifbond_ref ifb)
{
return (ifb->ifb_flags & IFBF_PROMISC) != 0;
}
static __inline__ void
ifbond_flags_set_promisc(ifbond_ref ifb)
{
ifb->ifb_flags |= IFBF_PROMISC;
return;
}
static __inline__ void
ifbond_flags_clear_promisc(ifbond_ref ifb)
{
ifb->ifb_flags &= ~IFBF_PROMISC;
return;
}
/*
* bondport_ref->po_flags bits
*/
#define BONDPORT_FLAGS_NTT 0x01
#define BONDPORT_FLAGS_READY 0x02
#define BONDPORT_FLAGS_SELECTED_CHANGED 0x04
#define BONDPORT_FLAGS_MUX_ATTACHED 0x08
#define BONDPORT_FLAGS_DISTRIBUTING 0x10
#define BONDPORT_FLAGS_UNUSED2 0x20
#define BONDPORT_FLAGS_UNUSED3 0x40
#define BONDPORT_FLAGS_UNUSED4 0x80
static __inline__ void
bondport_flags_set_ntt(bondport_ref p)
{
p->po_flags |= BONDPORT_FLAGS_NTT;
return;
}
static __inline__ void
bondport_flags_clear_ntt(bondport_ref p)
{
p->po_flags &= ~BONDPORT_FLAGS_NTT;
return;
}
static __inline__ int
bondport_flags_ntt(bondport_ref p)
{
return (p->po_flags & BONDPORT_FLAGS_NTT) != 0;
}
static __inline__ void
bondport_flags_set_ready(bondport_ref p)
{
p->po_flags |= BONDPORT_FLAGS_READY;
return;
}
static __inline__ void
bondport_flags_clear_ready(bondport_ref p)
{
p->po_flags &= ~BONDPORT_FLAGS_READY;
return;
}
static __inline__ int
bondport_flags_ready(bondport_ref p)
{
return (p->po_flags & BONDPORT_FLAGS_READY) != 0;
}
static __inline__ void
bondport_flags_set_selected_changed(bondport_ref p)
{
p->po_flags |= BONDPORT_FLAGS_SELECTED_CHANGED;
return;
}
static __inline__ void
bondport_flags_clear_selected_changed(bondport_ref p)
{
p->po_flags &= ~BONDPORT_FLAGS_SELECTED_CHANGED;
return;
}
static __inline__ int
bondport_flags_selected_changed(bondport_ref p)
{
return (p->po_flags & BONDPORT_FLAGS_SELECTED_CHANGED) != 0;
}
static __inline__ void
bondport_flags_set_mux_attached(bondport_ref p)
{
p->po_flags |= BONDPORT_FLAGS_MUX_ATTACHED;
return;
}
static __inline__ void
bondport_flags_clear_mux_attached(bondport_ref p)
{
p->po_flags &= ~BONDPORT_FLAGS_MUX_ATTACHED;
return;
}
static __inline__ int
bondport_flags_mux_attached(bondport_ref p)
{
return (p->po_flags & BONDPORT_FLAGS_MUX_ATTACHED) != 0;
}
static __inline__ void
bondport_flags_set_distributing(bondport_ref p)
{
p->po_flags |= BONDPORT_FLAGS_DISTRIBUTING;
return;
}
static __inline__ void
bondport_flags_clear_distributing(bondport_ref p)
{
p->po_flags &= ~BONDPORT_FLAGS_DISTRIBUTING;
return;
}
static __inline__ int
bondport_flags_distributing(bondport_ref p)
{
return (p->po_flags & BONDPORT_FLAGS_DISTRIBUTING) != 0;
}
typedef struct bond_globals_s {
struct ifbond_list ifbond_list;
lacp_system system;
lacp_system_priority system_priority;
} * bond_globals_ref;
static bond_globals_ref g_bond;
/**
** packet_buffer routines
** - thin wrapper for mbuf
**/
typedef struct mbuf * packet_buffer_ref;
static packet_buffer_ref
packet_buffer_allocate(int length)
{
packet_buffer_ref m;
int size;
/* leave room for ethernet header */
size = length + sizeof(struct ether_header);
if (size > (int)MHLEN) {
if (size > (int)MCLBYTES) {
BOND_LOG(LOG_NOTICE, 0,
"packet_buffer_allocate size %d > max %u",
size, MCLBYTES);
return NULL;
}
m = m_getcl(M_WAITOK, MT_DATA, M_PKTHDR);
} else {
m = m_gethdr(M_WAITOK, MT_DATA);
}
if (m == NULL) {
return NULL;
}
m->m_len = size;
m->m_pkthdr.len = size;
return m;
}
static void *__indexable
packet_buffer_byteptr(packet_buffer_ref buf)
{
return m_mtod_current(buf) + sizeof(struct ether_header);
}
typedef enum {
LAEventStart,
LAEventTimeout,
LAEventPacket,
LAEventMediaChange,
LAEventSelectedChange,
LAEventPortMoved,
LAEventReady
} LAEvent;
/**
** Receive machine
**/
static void
bondport_receive_machine(bondport_ref p, LAEvent event,
void * event_data);
/**
** Periodic Transmission machine
**/
static void
bondport_periodic_transmit_machine(bondport_ref p, LAEvent event,
void * event_data);
/**
** Transmit machine
**/
static void *TRANSMIT_MACHINE_TX_IMMEDIATE = __unsafe_forge_single(void *, 1);
static void
bondport_transmit_machine(bondport_ref p, LAEvent event,
void * event_data);
/**
** Mux machine
**/
static void
bondport_mux_machine(bondport_ref p, LAEvent event,
void * event_data);
/**
** bond, LAG
**/
static void
ifbond_activate_LAG(ifbond_ref bond, LAG_ref lag, int active_media);
static void
ifbond_deactivate_LAG(ifbond_ref bond, LAG_ref lag);
static int
ifbond_all_ports_ready(ifbond_ref bond);
static LAG_ref
ifbond_find_best_LAG(ifbond_ref bond, int * active_media);
static int
LAG_get_aggregatable_port_count(LAG_ref lag, int * active_media);
static int
ifbond_selection(ifbond_ref bond);
static void
bond_handle_event(struct ifnet * port_ifp, int event_code);
/**
** bondport
**/
static void
bondport_receive_lacpdu(bondport_ref p, lacpdu_ref in_lacpdu_p);
static void
bondport_slow_proto_transmit(bondport_ref p, packet_buffer_ref buf);
static bondport_ref
bondport_create(struct ifnet * port_ifp, lacp_port_priority priority,
int active, int short_timeout, int * error);
static void
bondport_start(bondport_ref p);
static void
bondport_free(bondport_ref p);
static int
bondport_aggregatable(bondport_ref p);
static int
bondport_remove_from_LAG(bondport_ref p);
static void
bondport_set_selected(bondport_ref p, SelectedState s);
static int
bondport_matches_LAG(bondport_ref p, LAG_ref lag);
static void
bondport_link_status_changed(bondport_ref p);
static void
bondport_enable_distributing(bondport_ref p);
static void
bondport_disable_distributing(bondport_ref p);
static __inline__ int
bondport_collecting(bondport_ref p)
{
if (p->po_bond->ifb_mode == IF_BOND_MODE_LACP) {
return lacp_actor_partner_state_collecting(p->po_actor_state);
}
return TRUE;
}
/**
** bond interface/dlil specific routines
**/
static int bond_clone_create(struct if_clone *, u_int32_t, void *);
static int bond_clone_destroy(struct ifnet *);
static int bond_output(ifnet_t ifp, mbuf_t list);
static int bond_ioctl(struct ifnet *ifp, u_long cmd, void * addr);
static int bond_attach_protocol(struct ifnet *ifp);
static int bond_detach_protocol(struct ifnet *ifp);
static int bond_setmulti(struct ifnet *ifp);
static int bond_add_interface(struct ifnet * ifp, struct ifnet * port_ifp);
static int bond_remove_interface(ifbond_ref ifb, struct ifnet * port_ifp);
static void bond_if_free(struct ifnet * ifp);
static void interface_link_event(struct ifnet * ifp, u_int32_t event_code);
static struct if_clone bond_cloner = IF_CLONE_INITIALIZER(BONDNAME,
bond_clone_create,
bond_clone_destroy,
0,
BOND_MAXUNIT);
static int
siocsifmtu(struct ifnet * ifp, int mtu)
{
struct ifreq ifr;
bzero(&ifr, sizeof(ifr));
ifr.ifr_mtu = mtu;
return ifnet_ioctl(ifp, 0, SIOCSIFMTU, &ifr);
}
static int
siocgifdevmtu(struct ifnet * ifp, struct ifdevmtu * ifdm_p)
{
struct ifreq ifr;
int error;
bzero(&ifr, sizeof(ifr));
error = ifnet_ioctl(ifp, 0, SIOCGIFDEVMTU, &ifr);
if (error == 0) {
*ifdm_p = ifr.ifr_devmtu;
}
return error;
}
static __inline__ void
ether_addr_copy(uint8_t *__sized_by(ETHER_ADDR_LEN) dest,
const uint8_t *__sized_by(ETHER_ADDR_LEN) source)
{
bcopy(source, dest, ETHER_ADDR_LEN);
return;
}
static __inline__ void
ifbond_retain(ifbond_ref ifb)
{
os_ref_retain(&ifb->ifb_retain_count);
}
static __inline__ void
ifbond_release(ifbond_ref ifb)
{
if (os_ref_release(&ifb->ifb_retain_count) != 0) {
return;
}
BOND_LOG(LOG_DEBUG, BD_DBGF_LIFECYCLE, "%s", ifb->ifb_name);
if (ifb->ifb_ifma_slow_proto != NULL) {
BOND_LOG(LOG_DEBUG, BD_DBGF_LIFECYCLE,
"%s: removing multicast", ifb->ifb_name);
(void) if_delmulti_anon(ifb->ifb_ifma_slow_proto->ifma_ifp,
ifb->ifb_ifma_slow_proto->ifma_addr);
IFMA_REMREF(ifb->ifb_ifma_slow_proto);
}
kfree_type_counted_by(bondport_ref, ifb->ifb_distributing_max,
ifb->ifb_distributing_array);
kfree_type(struct ifbond_s, ifb);
}
/*
* Function: ifbond_wait
* Purpose:
* Allows a single thread to gain exclusive access to the ifbond
* data structure. Some operations take a long time to complete,
* and some have side-effects that we can't predict. Holding the
* bond_lock() across such operations is not possible.
*
* For example:
* 1) The SIOCSIFLLADDR ioctl takes a long time (several seconds) to
* complete. Simply holding the bond_lock() would freeze all other
* data structure accesses during that time.
* 2) When we attach our protocol to the interface, a dlil event is
* generated and invokes our bond_event() function. bond_event()
* needs to take the bond_lock(), but we're already holding it, so
* we're deadlocked against ourselves.
* Notes:
* Before calling, you must be holding the bond_lock and have taken
* a reference on the ifbond_ref.
*/
static void
ifbond_wait(ifbond_ref ifb, const char * msg)
{
int waited = 0;
/* other add/remove in progress */
while (ifbond_flags_change_in_progress(ifb)) {
BOND_LOG(LOG_DEBUG, BD_DBGF_LIFECYCLE, "%s: %s msleep",
ifb->ifb_name, msg);
waited = 1;
(void)msleep(ifb, &bond_lck_mtx, PZERO, msg, 0);
}
/* prevent other bond list remove/add from taking place */
ifbond_flags_set_change_in_progress(ifb);
if (waited) {
BOND_LOG(LOG_DEBUG, BD_DBGF_LIFECYCLE,
"%s: %s woke up", ifb->ifb_name, msg);
}
return;
}
/*
* Function: ifbond_signal
* Purpose:
* Allows the thread that previously invoked ifbond_wait() to
* give up exclusive access to the ifbond data structure, and wake up
* any other threads waiting to access
* Notes:
* Before calling, you must be holding the bond_lock and have taken
* a reference on the ifbond_ref.
*/
static void
ifbond_signal(ifbond_ref ifb, const char * msg)
{
ifbond_flags_clear_change_in_progress(ifb);
wakeup((caddr_t)ifb);
BOND_LOG(LOG_DEBUG, BD_DBGF_LIFECYCLE, "%s: %s wakeup",
ifb->ifb_name, msg);
return;
}
/**
** Media information
**/
static int
link_speed(int active)
{
switch (IFM_SUBTYPE(active)) {
case IFM_AUTO:
case IFM_MANUAL:
case IFM_NONE:
return 0;
case IFM_10_T:
case IFM_10_2:
case IFM_10_5:
case IFM_10_STP:
case IFM_10_FL:
return 10;
case IFM_100_TX:
case IFM_100_FX:
case IFM_100_T4:
case IFM_100_VG:
case IFM_100_T2:
return 100;
case IFM_1000_SX:
case IFM_1000_LX:
case IFM_1000_CX:
case IFM_1000_TX:
case IFM_1000_CX_SGMII:
case IFM_1000_KX:
return 1000;
case IFM_HPNA_1:
return 1;
default:
/* assume that new defined types are going to be at least 10GigE */
case IFM_10G_T:
case IFM_10G_SR:
case IFM_10G_LR:
case IFM_10G_KX4:
case IFM_10G_KR:
case IFM_10G_CR1:
case IFM_10G_ER:
return 10000;
case IFM_2500_T:
return 2500;
case IFM_5000_T:
return 5000;
case IFM_20G_KR2:
return 20000;
case IFM_25G_CR:
case IFM_25G_KR:
case IFM_25G_SR:
case IFM_25G_LR:
return 25000;
case IFM_40G_CR4:
case IFM_40G_SR4:
case IFM_40G_LR4:
case IFM_40G_KR4:
return 40000;
case IFM_50G_CR2:
case IFM_50G_KR2:
case IFM_50G_SR2:
case IFM_50G_LR2:
return 50000;
case IFM_56G_R4:
return 56000;
case IFM_100G_CR4:
case IFM_100G_SR4:
case IFM_100G_KR4:
case IFM_100G_LR4:
return 100000;
}
}
static __inline__ int
media_active(const struct media_info * mi)
{
if ((mi->mi_status & IFM_AVALID) == 0) {
return 1;
}
return (mi->mi_status & IFM_ACTIVE) != 0;
}
static __inline__ int
media_full_duplex(const struct media_info * mi)
{
return (mi->mi_active & IFM_FDX) != 0;
}
static __inline__ int
media_type_unknown(const struct media_info * mi)
{
int unknown;
switch (IFM_SUBTYPE(mi->mi_active)) {
case IFM_AUTO:
case IFM_MANUAL:
case IFM_NONE:
unknown = 1;
break;
default:
unknown = 0;
break;
}
return unknown;
}
static __inline__ int
media_ok(const struct media_info * mi)
{
return media_full_duplex(mi) || media_type_unknown(mi);
}
static __inline__ int
media_speed(const struct media_info * mi)
{
return link_speed(mi->mi_active);
}
static struct media_info
interface_media_info(struct ifnet * ifp)
{
struct ifmediareq ifmr;
struct media_info mi;
bzero(&mi, sizeof(mi));
bzero(&ifmr, sizeof(ifmr));
if (ifnet_ioctl(ifp, 0, SIOCGIFMEDIA, &ifmr) == 0) {
if (ifmr.ifm_count != 0) {
mi.mi_status = ifmr.ifm_status;
mi.mi_active = ifmr.ifm_active;
}
}
return mi;
}
static int
if_siflladdr(struct ifnet * ifp, const struct ether_addr * ea_p)
{
struct ifreq ifr;
/*
* XXX setting the sa_len to ETHER_ADDR_LEN is wrong, but the driver
* currently expects it that way
*/
ifr.ifr_addr.sa_family = AF_UNSPEC;
ifr.ifr_addr.sa_len = ETHER_ADDR_LEN;
ether_addr_copy((uint8_t *__indexable)ifr.ifr_addr.sa_data, ea_p->octet);
return ifnet_ioctl(ifp, 0, SIOCSIFLLADDR, &ifr);
}
/**
** bond_globals
**/
static bond_globals_ref
bond_globals_create(lacp_system_priority sys_pri,
lacp_system_ref sys)
{
bond_globals_ref b;
b = kalloc_type(struct bond_globals_s, Z_WAITOK | Z_ZERO | Z_NOFAIL);
TAILQ_INIT(&b->ifbond_list);
b->system = *sys;
b->system_priority = sys_pri;
return b;
}
static int
bond_globals_init(void)
{
bond_globals_ref b;
int i;
struct ifnet * ifp;
bond_assert_lock_not_held();
if (g_bond != NULL) {
return 0;
}
/*
* use en0's ethernet address as the system identifier, and if it's not
* there, use en1 .. en3
*/
ifp = NULL;
for (i = 0; i < 4; i++) {
char ifname[IFNAMSIZ + 1];
snprintf(ifname, sizeof(ifname), "en%d", i);
ifp = ifunit(__unsafe_null_terminated_from_indexable(ifname));
if (ifp != NULL) {
break;
}
}
b = NULL;
if (ifp != NULL) {
b = bond_globals_create(0x8000, (lacp_system_ref)IF_LLADDR(ifp));
}
bond_lock();
if (g_bond != NULL) {
bond_unlock();
kfree_type(struct bond_globals_s, b);
return 0;
}
g_bond = b;
bond_unlock();
if (ifp == NULL) {
return ENXIO;
}
if (b == NULL) {
return ENOMEM;
}
return 0;
}
/*
* bpf tap
*/
static inline void *__indexable
get_bpf_header(mbuf_t m, struct ether_header * eh_p,
struct ether_vlan_header * evl_p, size_t * header_len)
{
void *header;
/* no VLAN tag, just use the ethernet header */
if ((m->m_pkthdr.csum_flags & CSUM_VLAN_TAG_VALID) == 0) {
header = (struct ether_header *__bidi_indexable)eh_p;
*header_len = sizeof(*eh_p);
goto done;
}
/* has VLAN tag, populate the ether VLAN header */
bcopy(eh_p, evl_p,
offsetof(struct ether_header, ether_type)); /* dst+src ether */
evl_p->evl_encap_proto = htons(ETHERTYPE_VLAN); /* VLAN encap */
evl_p->evl_tag = htons(m->m_pkthdr.vlan_tag); /* tag */
evl_p->evl_proto = eh_p->ether_type; /* proto */
*header_len = sizeof(*evl_p);
header = (struct ether_vlan_header *__bidi_indexable)evl_p;
done:
return header;
}
typedef void (*_tap_func)(ifnet_t interface, u_int32_t dlt, mbuf_t packet,
void *__sized_by(header_len) header, size_t header_len);
static void
bond_bpf_tap_common(ifnet_t ifp, mbuf_t m, struct ether_header * eh_p,
_tap_func func)
{
struct ether_vlan_header evl;
size_t header_len;
void * header;
header = get_bpf_header(m, eh_p, &evl, &header_len);
(*func)(ifp, DLT_EN10MB, m, header, header_len);
}
static inline void
bond_bpf_tap_in(ifnet_t ifp, mbuf_t m, struct ether_header * eh_p)
{
bond_bpf_tap_common(ifp, m, eh_p, bpf_tap_in);
}
static inline void
bond_bpf_tap_out(ifnet_t ifp, mbuf_t m, struct ether_header * eh_p)
{
bond_bpf_tap_common(ifp, m, eh_p, bpf_tap_out);
}
/*
* Function: bond_setmulti
* Purpose:
* Enable multicast reception on "our" interface by enabling multicasts on
* each of the member ports.
*/
static int
bond_setmulti(struct ifnet * ifp)
{
ifbond_ref ifb;
int error;
int result = 0;
bondport_ref p;
bond_lock();
ifb = ifnet_softc(ifp);
if (ifb == NULL || ifbond_flags_if_detaching(ifb)
|| TAILQ_EMPTY(&ifb->ifb_port_list)) {
bond_unlock();
return 0;
}
ifbond_retain(ifb);
ifbond_wait(ifb, "bond_setmulti");
if (ifbond_flags_if_detaching(ifb)) {
/* someone destroyed the bond while we were waiting */
result = EBUSY;
goto signal_done;
}
bond_unlock();
/* ifbond_wait() let's us safely walk the list without holding the lock */
TAILQ_FOREACH(p, &ifb->ifb_port_list, po_port_list) {
struct ifnet * port_ifp = p->po_ifp;
error = multicast_list_program(&p->po_multicast,
ifp, port_ifp);
if (error != 0) {
BOND_LOG(LOG_NOTICE, 0,
"%s: multicast_list_program(%s) failed, %d",
ifb->ifb_name, port_ifp->if_xname, error);
result = error;
}
}
bond_lock();
signal_done:
ifbond_signal(ifb, __func__);
bond_unlock();
ifbond_release(ifb);
return result;
}
static int
bond_clone_attach(void)
{
int error;
if ((error = if_clone_attach(&bond_cloner)) != 0) {
return error;
}
return 0;
}
static int
ifbond_add_slow_proto_multicast(ifbond_ref ifb)
{
int error;
struct ifmultiaddr *__single ifma = NULL;
struct sockaddr_dl sdl;
bond_assert_lock_not_held();
SOCKADDR_ZERO(&sdl, sizeof(sdl));
sdl.sdl_len = sizeof(sdl);
sdl.sdl_family = AF_LINK;
sdl.sdl_type = IFT_ETHER;
sdl.sdl_nlen = 0;
sdl.sdl_alen = sizeof(slow_proto_multicast);
bcopy(&slow_proto_multicast, sdl.sdl_data, sizeof(slow_proto_multicast));
error = if_addmulti_anon(ifb->ifb_ifp, SA(&sdl), &ifma);
if (error == 0) {
ifb->ifb_ifma_slow_proto = ifma;
}
return error;
}
static int
bond_clone_create(struct if_clone * ifc, u_int32_t unit, __unused void *params)
{
int error;
ifbond_ref ifb;
ifnet_ref_t ifp;
struct ifnet_init_eparams bond_init;
error = bond_globals_init();
if (error != 0) {
return error;
}
ifb = kalloc_type(struct ifbond_s, Z_WAITOK_ZERO_NOFAIL);
os_ref_init(&ifb->ifb_retain_count, NULL);
TAILQ_INIT(&ifb->ifb_port_list);
TAILQ_INIT(&ifb->ifb_lag_list);
ifb->ifb_key = unit + 1;
/* use the interface name as the unique id for ifp recycle */
if ((u_int32_t)snprintf(ifb->ifb_name, sizeof(ifb->ifb_name), "%s%d",
ifc->ifc_name, unit) >= sizeof(ifb->ifb_name)) {
ifbond_release(ifb);
return EINVAL;
}
bzero(&bond_init, sizeof(bond_init));
bond_init.ver = IFNET_INIT_CURRENT_VERSION;
bond_init.len = sizeof(bond_init);
bond_init.flags = IFNET_INIT_LEGACY;
bond_init.uniqueid_len = strbuflen(ifb->ifb_name);
bond_init.uniqueid = ifb->ifb_name;
bond_init.name = __unsafe_null_terminated_from_indexable(ifc->ifc_name);
bond_init.unit = unit;
bond_init.family = IFNET_FAMILY_BOND;
bond_init.type = IFT_IEEE8023ADLAG;
bond_init.output = bond_output;
bond_init.demux = ether_demux;
bond_init.add_proto = ether_add_proto;
bond_init.del_proto = ether_del_proto;
bond_init.check_multi = ether_check_multi;
bond_init.framer_extended = ether_frameout_extended;
bond_init.ioctl = bond_ioctl;
bond_init.detach = bond_if_free;
bond_init.broadcast_addr = etherbroadcastaddr;
bond_init.broadcast_len = ETHER_ADDR_LEN;
bond_init.softc = ifb;
error = ifnet_allocate_extended(&bond_init, &ifp);
if (error) {
ifbond_release(ifb);
return error;
}
ifb->ifb_ifp = ifp;
ifnet_set_offload(ifp, 0);
ifnet_set_addrlen(ifp, ETHER_ADDR_LEN); /* XXX ethernet specific */
ifnet_set_flags(ifp, IFF_BROADCAST | IFF_MULTICAST | IFF_SIMPLEX, 0xffff);
ifnet_set_mtu(ifp, ETHERMTU);
error = ifnet_attach(ifp, NULL);
if (error != 0) {
ifnet_release(ifp);
ifbond_release(ifb);
return error;
}
error = ifbond_add_slow_proto_multicast(ifb);
if (error != 0) {
BOND_LOG(LOG_NOTICE, 0,
"%s: failed to add slow_proto multicast, %d",
ifb->ifb_name, error);
}
/* attach as ethernet */
bpfattach(ifp, DLT_EN10MB, sizeof(struct ether_header));
bond_lock();
TAILQ_INSERT_HEAD(&g_bond->ifbond_list, ifb, ifb_bond_list);
bond_unlock();
return 0;
}
static void
bond_remove_all_interfaces(ifbond_ref ifb)
{
bondport_ref p;
bond_assert_lock_held();
/*
* do this in reverse order to avoid re-programming the mac address
* as each head interface is removed
*/
while ((p = TAILQ_LAST(&ifb->ifb_port_list, port_list)) != NULL) {
bond_remove_interface(ifb, p->po_ifp);
}
return;
}
static void
bond_remove(ifbond_ref ifb)
{
bond_assert_lock_held();
ifbond_flags_set_if_detaching(ifb);
TAILQ_REMOVE(&g_bond->ifbond_list, ifb, ifb_bond_list);
bond_remove_all_interfaces(ifb);
return;
}
static void
bond_if_detach(struct ifnet * ifp)
{
int error;
error = ifnet_detach(ifp);
if (error != 0) {
BOND_LOG(LOG_NOTICE, 0, "%s: ifnet_detach failed, %d",
ifp->if_xname, error);
}
return;
}
static int
bond_clone_destroy(struct ifnet * ifp)
{
ifbond_ref ifb;
bond_lock();
ifb = ifnet_softc(ifp);
if (ifb == NULL || ifnet_type(ifp) != IFT_IEEE8023ADLAG) {
bond_unlock();
return 0;
}
if (ifbond_flags_if_detaching(ifb)) {
bond_unlock();
return 0;
}
bond_remove(ifb);
bond_unlock();
bond_if_detach(ifp);
return 0;
}
static uint32_t
ether_header_hash(struct ether_header * eh_p)
{
uint32_t h;
/* get 32-bits from destination ether and ether type */
h = (*((uint16_t *)&eh_p->ether_dhost[4]) << 16)
| eh_p->ether_type;
h ^= *((uint32_t *)&eh_p->ether_dhost[0]);
return h;
}
#define BOND_HASH_L3_HEADER 0
#if BOND_HASH_L3_HEADER
static struct mbuf *
S_mbuf_skip_to_offset(struct mbuf * m, int32_t * offset)
{
int len;
len = m->m_len;
while (*offset >= len) {
*offset -= len;
m = m->m_next;
if (m == NULL) {
break;
}
len = m->m_len;
}
return m;
}
#if BYTE_ORDER == BIG_ENDIAN
static __inline__ uint32_t
make_uint32(u_char c0, u_char c1, u_char c2, u_char c3)
{
return ((uint32_t)c0 << 24) | ((uint32_t)c1 << 16)
| ((uint32_t)c2 << 8) | (uint32_t)c3;
}
#else /* BYTE_ORDER == LITTLE_ENDIAN */
static __inline__ uint32_t
make_uint32(u_char c0, u_char c1, u_char c2, u_char c3)
{
return ((uint32_t)c3 << 24) | ((uint32_t)c2 << 16)
| ((uint32_t)c1 << 8) | (uint32_t)c0;
}
#endif /* BYTE_ORDER == LITTLE_ENDIAN */
static int
S_mbuf_copy_uint32(struct mbuf * m, int32_t offset, uint32_t * val)
{
struct mbuf * current;
u_char * current_data;
struct mbuf * next;
u_char * next_data;
int space_current;
current = S_mbuf_skip_to_offset(m, &offset);
if (current == NULL) {
return 1;
}
current_data = mtod(current, u_char *) + offset;
space_current = current->m_len - offset;
if (space_current >= (int)sizeof(uint32_t)) {
*val = *((uint32_t *)current_data);
return 0;
}
next = current->m_next;
if (next == NULL || (next->m_len + space_current) < (int)sizeof(uint32_t)) {
return 1;
}
next_data = mtod(next, u_char *);
switch (space_current) {
case 1:
*val = make_uint32(current_data[0], next_data[0],
next_data[1], next_data[2]);
break;
case 2:
*val = make_uint32(current_data[0], current_data[1],
next_data[0], next_data[1]);
break;
default:
*val = make_uint32(current_data[0], current_data[1],
current_data[2], next_data[0]);
break;
}
return 0;
}
#define IP_SRC_OFFSET (offsetof(struct ip, ip_src) - offsetof(struct ip, ip_p))
#define IP_DST_OFFSET (offsetof(struct ip, ip_dst) - offsetof(struct ip, ip_p))
static uint32_t
ip_header_hash(struct mbuf * m)
{
u_char * data;
struct in_addr ip_dst;
struct in_addr ip_src;
u_char ip_p;
int32_t offset;
struct mbuf * orig_m = m;
/* find the IP protocol field relative to the start of the packet */
offset = offsetof(struct ip, ip_p) + sizeof(struct ether_header);
m = S_mbuf_skip_to_offset(m, &offset);
if (m == NULL || m->m_len < 1) {
goto bad_ip_packet;
}
data = mtod(m, u_char *) + offset;
ip_p = *data;
/* find the IP src relative to the IP protocol */
if ((m->m_len - offset)
>= (int)(IP_SRC_OFFSET + sizeof(struct in_addr) * 2)) {
/* this should be the normal case */
ip_src = *(struct in_addr *)(data + IP_SRC_OFFSET);
ip_dst = *(struct in_addr *)(data + IP_DST_OFFSET);
} else {
if (S_mbuf_copy_uint32(m, offset + IP_SRC_OFFSET,
(uint32_t *)&ip_src.s_addr)) {
goto bad_ip_packet;
}
if (S_mbuf_copy_uint32(m, offset + IP_DST_OFFSET,
(uint32_t *)&ip_dst.s_addr)) {
goto bad_ip_packet;
}
}
return ntohl(ip_dst.s_addr) ^ ntohl(ip_src.s_addr) ^ ((uint32_t)ip_p);
bad_ip_packet:
return ether_header_hash(mtod(orig_m, struct ether_header *));
}
#define IP6_ADDRS_LEN (sizeof(struct in6_addr) * 2)
static uint32_t
ipv6_header_hash(struct mbuf * m)
{
u_char * data;
int i;
int32_t offset;
struct mbuf * orig_m = m;
uint32_t * scan;
uint32_t val;
/* find the IP protocol field relative to the start of the packet */
offset = offsetof(struct ip6_hdr, ip6_src) + sizeof(struct ether_header);
m = S_mbuf_skip_to_offset(m, &offset);
if (m == NULL) {
goto bad_ipv6_packet;
}
data = mtod(m, u_char *) + offset;
val = 0;
if ((m->m_len - offset) >= (int)IP6_ADDRS_LEN) {
/* this should be the normal case */
for (i = 0, scan = (uint32_t *)data;
i < (int)(IP6_ADDRS_LEN / sizeof(uint32_t));
i++, scan++) {
val ^= *scan;
}
} else {
for (i = 0; i < (int)(IP6_ADDRS_LEN / sizeof(uint32_t)); i++) {
uint32_t tmp;
if (S_mbuf_copy_uint32(m, offset + i * sizeof(uint32_t),
(uint32_t *)&tmp)) {
goto bad_ipv6_packet;
}
val ^= tmp;
}
}
return ntohl(val);
bad_ipv6_packet:
return ether_header_hash(mtod(orig_m, struct ether_header *));
}
#endif /* BOND_HASH_L3_HEADER */
static void
_mbuf_adjust_pkthdr_and_data(mbuf_t m, int len)
{
mbuf_setdata(m, mtodo(m, len), mbuf_len(m) - len);
mbuf_pkthdr_adjustlen(m, -len);
}
static uint32_t
get_packet_hash(mbuf_t m)
{
uint32_t flow_hash;
if (m->m_pkthdr.pkt_flowid != 0) {
flow_hash = m->m_pkthdr.pkt_flowid;
} else {
struct ether_header * eh_p;
eh_p = mtod(m, struct ether_header *);
#if BOND_HASH_L3_HEADER
switch (ntohs(eh_p->ether_type)) {
case ETHERTYPE_IP:
flow_hash = ip_header_hash(m);
break;
case ETHERTYPE_IPV6:
flow_hash = ipv6_header_hash(m);
break;
default:
flow_hash = ether_header_hash(eh_p);
break;
}
#else /* BOND_HASH_L3_HEADER */
flow_hash = ether_header_hash(eh_p);
#endif /* BOND_HASH_L3_HEADER */
}
return flow_hash;
}
static ifnet_t
bond_get_port_ifp(ifnet_t ifp, uint32_t hash)
{
uint32_t port_index;
ifbond_ref ifb;
ifnet_t port_ifp = NULL;
bond_lock();
ifb = ifnet_softc(ifp);
if (ifb == NULL || ifbond_flags_if_detaching(ifb)
|| ifb->ifb_distributing_count == 0) {
goto done;
}
port_index = hash % ifb->ifb_distributing_count;
port_ifp = ifb->ifb_distributing_array[port_index]->po_ifp;
done:
bond_unlock();
return port_ifp;
}
static int
bond_output(ifnet_t ifp, mbuf_t m)
{
struct flowadv adv = { .code = FADV_SUCCESS };
int error = 0;
int flags;
uint32_t hash;
uint32_t len;
int log_level;
ifnet_t port_ifp;
VERIFY((m->m_flags & M_PKTHDR) != 0);
hash = get_packet_hash(m);
port_ifp = bond_get_port_ifp(ifp, hash);
if (port_ifp == NULL) {
m_freem(m);
goto done;
}
if (ifp->if_bpf != NULL) {
struct ether_header * eh_p;
eh_p = mtod(m, struct ether_header *);
_mbuf_adjust_pkthdr_and_data(m, ETHER_HDR_LEN);
bond_bpf_tap_out(ifp, m, eh_p);
_mbuf_adjust_pkthdr_and_data(m, -ETHER_HDR_LEN);
}
len = m->m_pkthdr.len;
if ((m->m_pkthdr.csum_flags & CSUM_VLAN_TAG_VALID) != 0) {
len += ETHER_VLAN_ENCAP_LEN;
}
ifnet_stat_increment_out(ifp, 1, len, 0);
flags = DLIL_OUTPUT_FLAGS_RAW;
error = dlil_output(port_ifp, PF_BOND, m, NULL, NULL, flags, &adv);
log_level = (error != 0) ? LOG_NOTICE : LOG_DEBUG;
BOND_LOG(log_level, BD_DBGF_OUTPUT, "%s: %s bytes %d, error=%d",
ifp->if_xname, port_ifp->if_xname, len, error);
if (error == 0) {
if (adv.code == FADV_FLOW_CONTROLLED) {
error = EQFULL;
} else if (adv.code == FADV_SUSPENDED) {
error = EQSUSPENDED;
}
}
done:
return error;
}
static bondport_ref
ifbond_lookup_port(ifbond_ref ifb, struct ifnet * port_ifp)
{
bondport_ref p;
TAILQ_FOREACH(p, &ifb->ifb_port_list, po_port_list) {
if (p->po_ifp == port_ifp) {
return p;
}
}
return NULL;
}
static bondport_ref
bond_lookup_port(struct ifnet * port_ifp)
{
ifbond_ref ifb;
bondport_ref port;
TAILQ_FOREACH(ifb, &g_bond->ifbond_list, ifb_bond_list) {
port = ifbond_lookup_port(ifb, port_ifp);
if (port != NULL) {
return port;
}
}
return NULL;
}
static void
bond_receive_lacpdu(struct mbuf * m, struct ifnet * port_ifp)
{
struct ifnet * bond_ifp = NULL;
ifbond_ref ifb;
int event_code = 0;
bool need_link_update = false;
bondport_ref p;
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP, "%s", port_ifp->if_xname);
bond_lock();
if ((ifnet_eflags(port_ifp) & IFEF_BOND) == 0) {
goto done;
}
p = bond_lookup_port(port_ifp);
if (p == NULL) {
goto done;
}
if (p->po_enabled == 0) {
goto done;
}
ifb = p->po_bond;
if (ifb->ifb_mode != IF_BOND_MODE_LACP) {
goto done;
}
/*
* Work-around for rdar://problem/51372042
* Sometimes, the link comes up but the driver doesn't report the
* negotiated medium at that time. When we receive an LACPDU packet,
* and the medium is unknown, force a link status check. Don't force
* the link status check more often than _FORCE_LINK_EVENT_INTERVAL
* seconds.
*/
#define _FORCE_LINK_EVENT_INTERVAL 1
if (media_type_unknown(&p->po_media_info)) {
uint64_t now = net_uptime();
if ((now - p->po_force_link_event_time) >=
_FORCE_LINK_EVENT_INTERVAL) {
need_link_update = true;
p->po_force_link_event_time = now;
}
}
bondport_receive_lacpdu(p, (lacpdu_ref)m_mtod_current(m));
if (ifbond_selection(ifb)) {
event_code = (ifb->ifb_active_lag == NULL)
? KEV_DL_LINK_OFF
: KEV_DL_LINK_ON;
/* XXX need to take a reference on bond_ifp */
bond_ifp = ifb->ifb_ifp;
ifb->ifb_last_link_event = event_code;
} else {
event_code = (ifb->ifb_active_lag == NULL)
? KEV_DL_LINK_OFF
: KEV_DL_LINK_ON;
if (event_code != ifb->ifb_last_link_event) {
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"%s: (receive) generating LINK event",
ifb->ifb_name);
bond_ifp = ifb->ifb_ifp;
ifb->ifb_last_link_event = event_code;
}
}
done:
bond_unlock();
if (bond_ifp != NULL) {
interface_link_event(bond_ifp, event_code);
}
m_freem(m);
if (need_link_update) {
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"simulating link status changed event");
bond_handle_event(port_ifp, KEV_DL_LINK_ON);
}
return;
}
static void
bond_receive_la_marker_pdu(struct mbuf * m, struct ifnet * port_ifp)
{
la_marker_pdu_ref marker_p;
bondport_ref p;
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP, "%s", port_ifp->if_xname);
marker_p = (la_marker_pdu_ref)(m_mtod_current(m) + ETHER_HDR_LEN);
if (marker_p->lm_marker_tlv_type != LA_MARKER_TLV_TYPE_MARKER) {
goto failed;
}
bond_lock();
if ((ifnet_eflags(port_ifp) & IFEF_BOND) == 0) {
bond_unlock();
goto failed;
}
p = bond_lookup_port(port_ifp);
if (p == NULL || p->po_enabled == 0
|| p->po_bond->ifb_mode != IF_BOND_MODE_LACP) {
bond_unlock();
goto failed;
}
/* echo back the same packet as a marker response */
marker_p->lm_marker_tlv_type = LA_MARKER_TLV_TYPE_MARKER_RESPONSE;
bondport_slow_proto_transmit(p, (packet_buffer_ref)m);
bond_unlock();
return;
failed:
m_freem(m);
return;
}
static bool
is_slow_proto_multicast(struct ether_header * eh_p)
{
return bcmp(eh_p->ether_dhost, &slow_proto_multicast,
sizeof(eh_p->ether_dhost)) == 0 &&
eh_p->ether_type == htons(IEEE8023AD_SLOW_PROTO_ETHERTYPE);
}
static void
bond_handle_slow_proto_multicast(ifnet_t port_ifp, mbuf_t m)
{
u_char subtype = *mtod(m, u_char *);
if (subtype == IEEE8023AD_SLOW_PROTO_SUBTYPE_LACP) {
if (m->m_pkthdr.len < LACPDU_MIN_SIZE) {
BOND_LOG(LOG_DEBUG, BD_DBGF_INPUT,
"dropping short LACP frame %d < %d",
m->m_pkthdr.len, LACPDU_MIN_SIZE);
goto discard;
}
/* send to lacp */
if (m->m_len < LACPDU_MIN_SIZE) {
m = m_pullup(m, LACPDU_MIN_SIZE);
if (m == NULL) {
BOND_LOG(LOG_NOTICE, BD_DBGF_INPUT,
"m_pullup LACPDU failed");
return;
}
}
bond_receive_lacpdu(m, port_ifp);
} else if (subtype == IEEE8023AD_SLOW_PROTO_SUBTYPE_LA_MARKER_PROTOCOL) {
int min_size;
/* restore the ethernet header pointer in the mbuf */
m->m_pkthdr.len += ETHER_HDR_LEN;
m->m_data -= ETHER_HDR_LEN;
m->m_len += ETHER_HDR_LEN;
min_size = ETHER_HDR_LEN + offsetof(la_marker_pdu, lm_reserved);
if (m->m_pkthdr.len < min_size) {
goto discard;
}
/* send to lacp */
if (m->m_len < min_size) {
m = m_pullup(m, min_size);
if (m == NULL) {
BOND_LOG(LOG_NOTICE, BD_DBGF_INPUT,
"m_pullup LA_MARKER failed");
return;
}
}
/* send to marker responder */
bond_receive_la_marker_pdu(m, port_ifp);
} else if (subtype == 0
|| subtype > IEEE8023AD_SLOW_PROTO_SUBTYPE_RESERVED_END) {
/* invalid subtype, discard the frame */
goto discard;
}
return;
discard:
m_freem(m);
return;
}
static void
bond_input_packet_list(ifnet_t port_ifp, mbuf_t list)
{
ifbond_ref ifb;
struct ifnet * ifp;
bondport_ref p;
struct ifnet_stat_increment_param s;
/* verify that we're ready to receive the packet list */
bond_lock();
if ((ifnet_eflags(port_ifp) & IFEF_BOND) == 0) {
goto discard;
}
p = bond_lookup_port(port_ifp);
if (p == NULL || bondport_collecting(p) == 0) {
goto discard;
}
ifb = p->po_bond;
ifp = ifb->ifb_ifp;
bond_unlock();
bzero(&s, sizeof(s));
for (mbuf_t scan = list; scan != NULL; scan = scan->m_nextpkt) {
struct ether_header * eh_p;
void * __single frame_header;
/* clear promisc so that the packet doesn't get dropped */
mbuf_setflags_mask(scan, 0, MBUF_PROMISC);
s.packets_in++;
s.bytes_in += scan->m_pkthdr.len + ETHER_HDR_LEN;
if ((scan->m_pkthdr.csum_flags & CSUM_VLAN_TAG_VALID) != 0) {
s.bytes_in += ETHER_VLAN_ENCAP_LEN;
}
if (ifp->if_bpf != NULL) {
frame_header = scan->m_pkthdr.pkt_hdr;
eh_p = (struct ether_header *)frame_header;
bond_bpf_tap_in(ifp, scan, eh_p);
}
scan->m_pkthdr.rcvif = ifp;
}
BOND_LOG(LOG_DEBUG, BD_DBGF_INPUT, "%s: %s packets %d bytes %d",
ifp->if_xname, port_ifp->if_xname, s.packets_in, s.bytes_in);
dlil_input_packet_list(ifp, list);
return;
discard:
bond_unlock();
m_freem_list(list);
return;
}
static int
bond_input(ifnet_t port_ifp, __unused protocol_family_t protocol, mbuf_t m)
{
struct ether_header * eh_p;
void * __single frame_header;
mblist list;
mbuf_t next_packet = NULL;
mbuf_t scan;
mblist_init(&list);
for (scan = m; scan != NULL; scan = next_packet) {
next_packet = scan->m_nextpkt;
scan->m_nextpkt = NULL;
frame_header = scan->m_pkthdr.pkt_hdr;
eh_p = (struct ether_header *)frame_header;
if ((scan->m_flags & M_MCAST) != 0 &&
is_slow_proto_multicast(eh_p)) {
/* send up what we have */
if (list.head != NULL) {
bond_input_packet_list(port_ifp, list.head);
mblist_init(&list);
}
/* process this multicast */
bond_handle_slow_proto_multicast(port_ifp, scan);
} else {
mblist_append(&list, scan);
}
}
if (list.head != NULL) {
bond_input_packet_list(port_ifp, list.head);
}
return 0;
}
static __inline__ const char *
bondport_get_name(bondport_ref p)
{
return __unsafe_null_terminated_from_indexable(p->po_name);
}
static __inline__ int
bondport_get_index(bondport_ref p)
{
return ifnet_index(p->po_ifp);
}
static void
bondport_slow_proto_transmit(bondport_ref p, packet_buffer_ref buf)
{
struct ether_header * eh_p;
int error;
/* packet_buffer_allocate leaves room for ethernet header */
eh_p = mtod(buf, struct ether_header *);
bcopy(&slow_proto_multicast, &eh_p->ether_dhost, sizeof(eh_p->ether_dhost));
bcopy(&p->po_saved_addr, eh_p->ether_shost, sizeof(eh_p->ether_shost));
eh_p->ether_type = htons(IEEE8023AD_SLOW_PROTO_ETHERTYPE);
error = ifnet_output_raw(p->po_ifp, PF_BOND, buf);
if (error != 0) {
BOND_LOG(LOG_NOTICE, BD_DBGF_LACP,
"(%s) failed %d", bondport_get_name(p), error);
}
return;
}
static void
bondport_timer_process_func(devtimer_ref timer,
devtimer_process_func_event event)
{
bondport_ref p;
switch (event) {
case devtimer_process_func_event_lock:
bond_lock();
devtimer_retain(timer);
break;
case devtimer_process_func_event_unlock:
if (devtimer_valid(timer)) {
/* as long as the devtimer is valid, we can look at arg0 */
int event_code = 0;
struct ifnet * bond_ifp = NULL;
p = (bondport_ref)devtimer_arg0(timer);
if (ifbond_selection(p->po_bond)) {
event_code = (p->po_bond->ifb_active_lag == NULL)
? KEV_DL_LINK_OFF
: KEV_DL_LINK_ON;
/* XXX need to take a reference on bond_ifp */
bond_ifp = p->po_bond->ifb_ifp;
p->po_bond->ifb_last_link_event = event_code;
} else {
event_code = (p->po_bond->ifb_active_lag == NULL)
? KEV_DL_LINK_OFF
: KEV_DL_LINK_ON;
if (event_code !=
p->po_bond->ifb_last_link_event) {
BOND_LOG(LOG_NOTICE, BD_DBGF_LACP,
"%s: (timer) generating LINK event",
p->po_bond->ifb_name);
bond_ifp = p->po_bond->ifb_ifp;
p->po_bond->ifb_last_link_event = event_code;
}
}
devtimer_release(timer);
bond_unlock();
if (bond_ifp != NULL) {
interface_link_event(bond_ifp, event_code);
}
} else {
/* timer is going away */
devtimer_release(timer);
bond_unlock();
}
break;
default:
break;
}
}
static bondport_ref
bondport_create(struct ifnet * port_ifp, lacp_port_priority priority,
int active, int short_timeout, int * ret_error)
{
int error = 0;
bondport_ref p = NULL;
lacp_actor_partner_state s;
*ret_error = 0;
p = kalloc_type(struct bondport_s, Z_WAITOK | Z_ZERO | Z_NOFAIL);
multicast_list_init(&p->po_multicast);
if ((u_int32_t)snprintf(p->po_name, sizeof(p->po_name), "%s%d",
ifnet_name(port_ifp), ifnet_unit(port_ifp))
>= sizeof(p->po_name)) {
BOND_LOG(LOG_NOTICE, BD_DBGF_LIFECYCLE,
"name too large");
*ret_error = EINVAL;
goto failed;
}
error = siocgifdevmtu(port_ifp, &p->po_devmtu);
if (error != 0) {
BOND_LOG(LOG_NOTICE, BD_DBGF_LIFECYCLE,
"SIOCGIFDEVMTU %s failed, %d",
bondport_get_name(p), error);
goto failed;
}
/* remember the current interface MTU so it can be restored */
p->po_devmtu.ifdm_current = ifnet_mtu(port_ifp);
p->po_ifp = port_ifp;
p->po_media_info = interface_media_info(port_ifp);
p->po_current_while_timer = devtimer_create(bondport_timer_process_func, p);
if (p->po_current_while_timer == NULL) {
*ret_error = ENOMEM;
goto failed;
}
p->po_periodic_timer = devtimer_create(bondport_timer_process_func, p);
if (p->po_periodic_timer == NULL) {
*ret_error = ENOMEM;
goto failed;
}
p->po_wait_while_timer = devtimer_create(bondport_timer_process_func, p);
if (p->po_wait_while_timer == NULL) {
*ret_error = ENOMEM;
goto failed;
}
p->po_transmit_timer = devtimer_create(bondport_timer_process_func, p);
if (p->po_transmit_timer == NULL) {
*ret_error = ENOMEM;
goto failed;
}
p->po_receive_state = ReceiveState_none;
p->po_mux_state = MuxState_none;
p->po_priority = priority;
s = 0;
s = lacp_actor_partner_state_set_aggregatable(s);
if (short_timeout) {
s = lacp_actor_partner_state_set_short_timeout(s);
}
if (active) {
s = lacp_actor_partner_state_set_active_lacp(s);
}
p->po_actor_state = s;
return p;
failed:
bondport_free(p);
return NULL;
}
static void
bondport_start(bondport_ref p)
{
bondport_receive_machine(p, LAEventStart, NULL);
bondport_mux_machine(p, LAEventStart, NULL);
bondport_periodic_transmit_machine(p, LAEventStart, NULL);
bondport_transmit_machine(p, LAEventStart, NULL);
return;
}
/*
* Function: bondport_invalidate_timers
* Purpose:
* Invalidate all of the timers for the bondport.
*/
static void
bondport_invalidate_timers(bondport_ref p)
{
devtimer_invalidate(p->po_current_while_timer);
devtimer_invalidate(p->po_periodic_timer);
devtimer_invalidate(p->po_wait_while_timer);
devtimer_invalidate(p->po_transmit_timer);
}
/*
* Function: bondport_cancel_timers
* Purpose:
* Cancel all of the timers for the bondport.
*/
static void
bondport_cancel_timers(bondport_ref p)
{
devtimer_cancel(p->po_current_while_timer);
devtimer_cancel(p->po_periodic_timer);
devtimer_cancel(p->po_wait_while_timer);
devtimer_cancel(p->po_transmit_timer);
}
static void
bondport_free(bondport_ref p)
{
multicast_list_remove(&p->po_multicast);
devtimer_release(p->po_current_while_timer);
devtimer_release(p->po_periodic_timer);
devtimer_release(p->po_wait_while_timer);
devtimer_release(p->po_transmit_timer);
kfree_type(struct bondport_s, p);
return;
}
static __inline__ int
bond_device_mtu(struct ifnet * ifp, ifbond_ref ifb)
{
return ((int)ifnet_mtu(ifp) > ifb->ifb_altmtu)
? (int)ifnet_mtu(ifp) : ifb->ifb_altmtu;
}
static int
bond_add_interface(struct ifnet * ifp, struct ifnet * port_ifp)
{
u_int32_t eflags;
uint32_t control_flags = 0;
int devmtu;
int error = 0;
int event_code = 0;
int first = FALSE;
ifbond_ref ifb;
bondport_ref * new_array = NULL;
bondport_ref * old_array = NULL;
bondport_ref p;
int old_max = 0;
int new_max = 0;
if (IFNET_IS_INTCOPROC(port_ifp) || IFNET_IS_MANAGEMENT(port_ifp)) {
return EINVAL;
}
/* pre-allocate space for new port */
p = bondport_create(port_ifp, 0x8000, 1, 0, &error);
if (p == NULL) {
return error;
}
bond_lock();
ifb = (ifbond_ref)ifnet_softc(ifp);
if (ifb == NULL || ifbond_flags_if_detaching(ifb)) {
bond_unlock();
bondport_free(p);
return ifb == NULL ? EOPNOTSUPP : EBUSY;
}
/* make sure this interface can handle our current MTU */
devmtu = bond_device_mtu(ifp, ifb);
if (devmtu != 0
&& (devmtu > p->po_devmtu.ifdm_max || devmtu < p->po_devmtu.ifdm_min)) {
bond_unlock();
BOND_LOG(LOG_NOTICE, BD_DBGF_LIFECYCLE,
"interface %s doesn't support mtu %d",
bondport_get_name(p), devmtu);
bondport_free(p);
return EINVAL;
}
/* make sure ifb doesn't get de-allocated while we wait */
ifbond_retain(ifb);
/* wait for other add or remove to complete */
ifbond_wait(ifb, __func__);
if (ifbond_flags_if_detaching(ifb)) {
/* someone destroyed the bond while we were waiting */
error = EBUSY;
goto signal_done;
}
if (bond_lookup_port(port_ifp) != NULL) {
/* port is already part of a bond */
error = EBUSY;
goto signal_done;
}
if ((ifnet_eflags(port_ifp) & (IFEF_VLAN | IFEF_BOND)) != 0) {
/* interface already has VLAN's, or is part of bond */
error = EBUSY;
goto signal_done;
}
/* mark the interface busy */
eflags = if_set_eflags(port_ifp, IFEF_BOND);
if ((eflags & IFEF_VLAN) != 0) {
/* vlan got in ahead of us */
if_clear_eflags(port_ifp, IFEF_BOND);
error = EBUSY;
goto signal_done;
}
if (TAILQ_EMPTY(&ifb->ifb_port_list)) {
ifnet_set_offload(ifp, ifnet_offload(port_ifp));
ifnet_set_flags(ifp, IFF_RUNNING, IFF_RUNNING);
if (ifbond_flags_lladdr(ifb) == FALSE) {
first = TRUE;
}
} else {
ifnet_offload_t ifp_offload;
ifnet_offload_t port_ifp_offload;
ifp_offload = ifnet_offload(ifp);
port_ifp_offload = ifnet_offload(port_ifp);
if (ifp_offload != port_ifp_offload) {
ifnet_offload_t offload;
offload = ifp_offload & port_ifp_offload;
BOND_LOG(LOG_NOTICE, BD_DBGF_LIFECYCLE,
"(%s, %s) hwassist values don't match 0x%x != 0x%x,"
" using 0x%x instead",
ifb->ifb_name, bondport_get_name(p),
ifp_offload, port_ifp_offload, offload);
/*
* XXX
* if the bond has VLAN's, we can't simply change the hwassist
* field behind its back: this needs work
*/
ifnet_set_offload(ifp, offload);
}
}
p->po_bond = ifb;
/* remember the port's ethernet address so it can be restored */
ether_addr_copy(p->po_saved_addr.octet,
(uint8_t *__indexable)IF_LLADDR(port_ifp));
/* add it to the list of ports */
TAILQ_INSERT_TAIL(&ifb->ifb_port_list, p, po_port_list);
ifb->ifb_port_count++;
bond_unlock();
/* first port added to bond determines bond's ethernet address */
if (first) {
ifnet_set_lladdr_and_type(ifp, IF_LLADDR(port_ifp), ETHER_ADDR_LEN,
IFT_ETHER);
}
uint32_bit_set(&control_flags, PORT_CONTROL_FLAGS_IN_LIST);
/* allocate a larger distributing array */
new_max = ifb->ifb_port_count;
new_array = kalloc_type(bondport_ref, new_max, Z_WAITOK);
if (new_array == NULL) {
error = ENOMEM;
goto failed;
}
/* attach our BOND "protocol" to the interface */
error = bond_attach_protocol(port_ifp);
if (error) {
goto failed;
}
uint32_bit_set(&control_flags, PORT_CONTROL_FLAGS_PROTO_ATTACHED);
/* set the interface MTU */
devmtu = bond_device_mtu(ifp, ifb);
error = siocsifmtu(port_ifp, devmtu);
if (error != 0) {
BOND_LOG(LOG_NOTICE, BD_DBGF_LIFECYCLE,
"(%s, %s): SIOCSIFMTU %d failed %d",
ifb->ifb_name, bondport_get_name(p), devmtu, error);
goto failed;
}
uint32_bit_set(&control_flags, PORT_CONTROL_FLAGS_MTU_SET);
/* program the port with our multicast addresses */
error = multicast_list_program(&p->po_multicast, ifp, port_ifp);
if (error) {
BOND_LOG(LOG_NOTICE, BD_DBGF_LIFECYCLE,
"(%s, %s): multicast_list_program failed %d",
ifb->ifb_name, bondport_get_name(p), error);
goto failed;
}
/* mark the interface up */
ifnet_set_flags(port_ifp, IFF_UP, IFF_UP);
error = ifnet_ioctl(port_ifp, 0, SIOCSIFFLAGS, NULL);
if (error != 0) {
BOND_LOG(LOG_NOTICE, BD_DBGF_LIFECYCLE,
"(%s, %s): SIOCSIFFLAGS failed %d",
ifb->ifb_name, bondport_get_name(p), error);
goto failed;
}
/* re-program the port's ethernet address */
error = if_siflladdr(port_ifp,
(const struct ether_addr *)IF_LLADDR(ifp));
if (error == 0) {
if (memcmp(IF_LLADDR(ifp), IF_LLADDR(port_ifp), ETHER_ADDR_LEN)
!= 0) {
/* it lied, it really doesn't support setting lladdr */
error = EOPNOTSUPP;
}
}
if (error != 0) {
/* port doesn't support setting the link address */
BOND_LOG(LOG_NOTICE, BD_DBGF_LIFECYCLE,
"(%s, %s): if_siflladdr failed %d",
ifb->ifb_name, bondport_get_name(p), error);
error = ifnet_set_promiscuous(port_ifp, 1);
if (error != 0) {
/* port doesn't support setting promiscuous mode */
BOND_LOG(LOG_NOTICE, BD_DBGF_LIFECYCLE,
"(%s, %s): set promiscuous failed %d",
ifb->ifb_name, bondport_get_name(p), error);
goto failed;
}
uint32_bit_set(&control_flags,
PORT_CONTROL_FLAGS_PROMISCUOUS_SET);
} else {
uint32_bit_set(&control_flags,
PORT_CONTROL_FLAGS_LLADDR_SET);
}
/* if we're in promiscuous mode, enable that as well */
if (ifbond_flags_promisc(ifb)) {
error = ifnet_set_promiscuous(port_ifp, 1);
if (error != 0) {
/* port doesn't support setting promiscuous mode */
BOND_LOG(LOG_NOTICE, BD_DBGF_LIFECYCLE,
"(%s, %s): set promiscuous failed %d",
ifb->ifb_name, bondport_get_name(p), error);
goto failed;
}
uint32_bit_set(&control_flags,
PORT_CONTROL_FLAGS_BOND_PROMISCUOUS_SET);
}
bond_lock();
/* no failures past this point */
p->po_enabled = 1;
p->po_control_flags = control_flags;
/* copy the contents of the existing distributing array */
if (ifb->ifb_distributing_count) {
bcopy(ifb->ifb_distributing_array, new_array,
sizeof(*new_array) * ifb->ifb_distributing_count);
}
old_array = ifb->ifb_distributing_array;
old_max = ifb->ifb_distributing_max;
ifb->ifb_distributing_array = new_array;
ifb->ifb_distributing_max = new_max;
if (ifb->ifb_mode == IF_BOND_MODE_LACP) {
bondport_start(p);
/* check if we need to generate a link status event */
if (ifbond_selection(ifb)) {
event_code = (ifb->ifb_active_lag == NULL)
? KEV_DL_LINK_OFF
: KEV_DL_LINK_ON;
ifb->ifb_last_link_event = event_code;
}
} else {
/* are we adding the first distributing interface? */
if (media_active(&p->po_media_info)) {
if (ifb->ifb_distributing_count == 0) {
ifb->ifb_last_link_event = event_code = KEV_DL_LINK_ON;
}
bondport_enable_distributing(p);
} else {
bondport_disable_distributing(p);
}
}
/* clear the busy state, and wakeup anyone waiting */
ifbond_signal(ifb, __func__);
bond_unlock();
if (event_code != 0) {
interface_link_event(ifp, event_code);
}
kfree_type(bondport_ref, old_max, old_array);
return 0;
failed:
bond_assert_lock_not_held();
/* if this was the first port to be added, clear our address */
if (first) {
ifnet_set_lladdr_and_type(ifp, NULL, 0, IFT_IEEE8023ADLAG);
}
kfree_type(bondport_ref, new_max, new_array);
if (uint32_bit_is_set(control_flags,
PORT_CONTROL_FLAGS_LLADDR_SET)) {
int error1;
error1 = if_siflladdr(port_ifp, &p->po_saved_addr);
if (error1 != 0) {
BOND_LOG(LOG_NOTICE, BD_DBGF_LIFECYCLE,
"(%s, %s): if_siflladdr restore failed %d",
ifb->ifb_name, bondport_get_name(p), error1);
}
}
if (uint32_bit_is_set(control_flags,
PORT_CONTROL_FLAGS_PROMISCUOUS_SET)) {
int error1;
error1 = ifnet_set_promiscuous(port_ifp, 0);
if (error1 != 0) {
BOND_LOG(LOG_NOTICE, BD_DBGF_LIFECYCLE,
"(%s, %s): promiscous mode disable failed %d",
ifb->ifb_name, bondport_get_name(p), error1);
}
}
if (uint32_bit_is_set(control_flags,
PORT_CONTROL_FLAGS_PROTO_ATTACHED)) {
(void)bond_detach_protocol(port_ifp);
}
if (uint32_bit_is_set(control_flags,
PORT_CONTROL_FLAGS_MTU_SET)) {
int error1;
error1 = siocsifmtu(port_ifp, p->po_devmtu.ifdm_current);
if (error1 != 0) {
BOND_LOG(LOG_NOTICE, BD_DBGF_LIFECYCLE,
"(%s, %s): SIOCSIFMTU %d failed %d",
ifb->ifb_name, bondport_get_name(p),
p->po_devmtu.ifdm_current, error1);
}
}
bond_lock();
if (uint32_bit_is_set(control_flags,
PORT_CONTROL_FLAGS_IN_LIST)) {
TAILQ_REMOVE(&ifb->ifb_port_list, p, po_port_list);
ifb->ifb_port_count--;
}
if_clear_eflags(ifp, IFEF_BOND);
if (TAILQ_EMPTY(&ifb->ifb_port_list)) {
ifb->ifb_altmtu = 0;
ifnet_set_mtu(ifp, ETHERMTU);
ifnet_set_offload(ifp, 0);
}
signal_done:
ifbond_signal(ifb, __func__);
bond_unlock();
ifbond_release(ifb);
bondport_free(p);
return error;
}
static int
bond_remove_interface(ifbond_ref ifb, struct ifnet * port_ifp)
{
int active_lag = 0;
int error = 0;
int event_code = 0;
bondport_ref head_port;
struct ifnet * ifp;
int last = FALSE;
int new_link_address = FALSE;
bondport_ref p;
lacp_actor_partner_state s;
int was_distributing;
bond_assert_lock_held();
ifbond_retain(ifb);
ifbond_wait(ifb, "bond_remove_interface");
p = ifbond_lookup_port(ifb, port_ifp);
if (p == NULL) {
error = ENXIO;
/* it got removed by another thread */
goto signal_done;
}
/* de-select it and remove it from the lists */
was_distributing = bondport_flags_distributing(p);
bondport_disable_distributing(p);
if (ifb->ifb_mode == IF_BOND_MODE_LACP) {
bondport_set_selected(p, SelectedState_UNSELECTED);
active_lag = bondport_remove_from_LAG(p);
/* invalidate timers here while holding the bond_lock */
bondport_invalidate_timers(p);
/* announce that we're Individual now */
s = p->po_actor_state;
s = lacp_actor_partner_state_set_individual(s);
s = lacp_actor_partner_state_set_not_collecting(s);
s = lacp_actor_partner_state_set_not_distributing(s);
s = lacp_actor_partner_state_set_out_of_sync(s);
p->po_actor_state = s;
bondport_flags_set_ntt(p);
}
TAILQ_REMOVE(&ifb->ifb_port_list, p, po_port_list);
ifb->ifb_port_count--;
ifp = ifb->ifb_ifp;
head_port = TAILQ_FIRST(&ifb->ifb_port_list);
if (head_port == NULL) {
ifnet_set_flags(ifp, 0, IFF_RUNNING);
if (ifbond_flags_lladdr(ifb) == FALSE) {
last = TRUE;
}
ifnet_set_offload(ifp, 0);
ifnet_set_mtu(ifp, ETHERMTU);
ifb->ifb_altmtu = 0;
} else if (ifbond_flags_lladdr(ifb) == FALSE
&& bcmp(&p->po_saved_addr, IF_LLADDR(ifp),
ETHER_ADDR_LEN) == 0) {
new_link_address = TRUE;
}
/* check if we need to generate a link status event */
if (ifb->ifb_mode == IF_BOND_MODE_LACP) {
if (ifbond_selection(ifb) || active_lag) {
event_code = (ifb->ifb_active_lag == NULL)
? KEV_DL_LINK_OFF
: KEV_DL_LINK_ON;
ifb->ifb_last_link_event = event_code;
}
bondport_transmit_machine(p, LAEventStart,
TRANSMIT_MACHINE_TX_IMMEDIATE);
} else {
/* are we removing the last distributing interface? */
if (was_distributing && ifb->ifb_distributing_count == 0) {
ifb->ifb_last_link_event = event_code = KEV_DL_LINK_OFF;
}
}
bond_unlock();
if (last) {
ifnet_set_lladdr_and_type(ifp, NULL, 0, IFT_IEEE8023ADLAG);
} else if (new_link_address) {
struct ifnet * scan_ifp;
bondport_ref scan_port;
/* ifbond_wait() allows port list traversal without holding the lock */
/* this port gave the bond its ethernet address, switch to new one */
ifnet_set_lladdr_and_type(ifp,
&head_port->po_saved_addr, ETHER_ADDR_LEN,
IFT_ETHER);
/* re-program each port with the new link address */
TAILQ_FOREACH(scan_port, &ifb->ifb_port_list, po_port_list) {
scan_ifp = scan_port->po_ifp;
if (!uint32_bit_is_set(scan_port->po_control_flags,
PORT_CONTROL_FLAGS_LLADDR_SET)) {
/* port doesn't support setting lladdr */
continue;
}
error = if_siflladdr(scan_ifp,
(const struct ether_addr *) IF_LLADDR(ifp));
if (error != 0) {
BOND_LOG(LOG_NOTICE, BD_DBGF_LIFECYCLE,
"(%s, %s): if_siflladdr (%s) failed %d",
ifb->ifb_name, bondport_get_name(p),
bondport_get_name(scan_port), error);
}
}
}
/* restore the port's ethernet address */
if (uint32_bit_is_set(p->po_control_flags,
PORT_CONTROL_FLAGS_LLADDR_SET)) {
error = if_siflladdr(port_ifp, &p->po_saved_addr);
if (error != 0) {
BOND_LOG(LOG_NOTICE, BD_DBGF_LIFECYCLE,
"(%s, %s): if_siflladdr failed %d",
ifb->ifb_name, bondport_get_name(p), error);
}
}
/* disable promiscous mode (if we enabled it) */
if (uint32_bit_is_set(p->po_control_flags,
PORT_CONTROL_FLAGS_PROMISCUOUS_SET)) {
error = ifnet_set_promiscuous(port_ifp, 0);
if (error != 0) {
BOND_LOG(LOG_NOTICE, BD_DBGF_LIFECYCLE,
"(%s, %s): disable promiscuous failed %d",
ifb->ifb_name, bondport_get_name(p), error);
}
}
/* disable promiscous mode from bond (if we enabled it) */
if (uint32_bit_is_set(p->po_control_flags,
PORT_CONTROL_FLAGS_BOND_PROMISCUOUS_SET)) {
error = ifnet_set_promiscuous(port_ifp, 0);
if (error != 0) {
BOND_LOG(LOG_NOTICE, BD_DBGF_LIFECYCLE,
"(%s, %s): disable promiscuous failed %d",
ifb->ifb_name, bondport_get_name(p), error);
}
}
/* restore the port's MTU */
error = siocsifmtu(port_ifp, p->po_devmtu.ifdm_current);
if (error != 0) {
BOND_LOG(LOG_NOTICE, BD_DBGF_LIFECYCLE,
"(%s, %s): SIOCSIFMTU %d failed %d",
ifb->ifb_name, bondport_get_name(p),
p->po_devmtu.ifdm_current, error);
}
/* remove the bond "protocol" */
bond_detach_protocol(port_ifp);
/* generate link event */
if (event_code != 0) {
interface_link_event(ifp, event_code);
}
bond_lock();
bondport_free(p);
if_clear_eflags(port_ifp, IFEF_BOND);
/* release this bondport's reference to the ifbond */
ifbond_release(ifb);
signal_done:
ifbond_signal(ifb, __func__);
ifbond_release(ifb);
return error;
}
static void
bond_set_lacp_mode(ifbond_ref ifb)
{
bondport_ref p;
TAILQ_FOREACH(p, &ifb->ifb_port_list, po_port_list) {
bondport_disable_distributing(p);
bondport_start(p);
}
return;
}
static void
bond_set_static_mode(ifbond_ref ifb)
{
bondport_ref p;
lacp_actor_partner_state s;
TAILQ_FOREACH(p, &ifb->ifb_port_list, po_port_list) {
bondport_disable_distributing(p);
bondport_set_selected(p, SelectedState_UNSELECTED);
(void)bondport_remove_from_LAG(p);
bondport_cancel_timers(p);
/* announce that we're Individual now */
s = p->po_actor_state;
s = lacp_actor_partner_state_set_individual(s);
s = lacp_actor_partner_state_set_not_collecting(s);
s = lacp_actor_partner_state_set_not_distributing(s);
s = lacp_actor_partner_state_set_out_of_sync(s);
p->po_actor_state = s;
bondport_flags_set_ntt(p);
bondport_transmit_machine(p, LAEventStart,
TRANSMIT_MACHINE_TX_IMMEDIATE);
/* clear state */
p->po_actor_state = 0;
bzero(&p->po_partner_state, sizeof(p->po_partner_state));
if (media_active(&p->po_media_info)) {
bondport_enable_distributing(p);
} else {
bondport_disable_distributing(p);
}
}
return;
}
static int
bond_set_mode(struct ifnet * ifp, int mode)
{
int error = 0;
int event_code = 0;
ifbond_ref ifb;
bond_lock();
ifb = (ifbond_ref)ifnet_softc(ifp);
if (ifb == NULL || ifbond_flags_if_detaching(ifb)) {
bond_unlock();
return (ifb == NULL) ? EOPNOTSUPP : EBUSY;
}
if (ifb->ifb_mode == mode) {
bond_unlock();
return 0;
}
ifbond_retain(ifb);
ifbond_wait(ifb, "bond_set_mode");
/* verify (again) that the mode is actually different */
if (ifb->ifb_mode == mode) {
/* nothing to do */
goto signal_done;
}
ifb->ifb_mode = mode;
if (mode == IF_BOND_MODE_LACP) {
bond_set_lacp_mode(ifb);
/* check if we need to generate a link status event */
if (ifbond_selection(ifb)) {
event_code = (ifb->ifb_active_lag == NULL)
? KEV_DL_LINK_OFF
: KEV_DL_LINK_ON;
}
} else {
bond_set_static_mode(ifb);
event_code = (ifb->ifb_distributing_count == 0)
? KEV_DL_LINK_OFF
: KEV_DL_LINK_ON;
}
ifb->ifb_last_link_event = event_code;
signal_done:
ifbond_signal(ifb, __func__);
bond_unlock();
ifbond_release(ifb);
if (event_code != 0) {
interface_link_event(ifp, event_code);
}
return error;
}
static int
bond_get_status(ifbond_ref ifb, struct if_bond_req * ibr_p, user_addr_t datap)
{
int count;
user_addr_t dst;
int error = 0;
struct if_bond_status_req * ibsr;
struct if_bond_status ibs;
bondport_ref port;
ibsr = &(ibr_p->ibr_ibru.ibru_status);
if (ibsr->ibsr_version != IF_BOND_STATUS_REQ_VERSION) {
return EINVAL;
}
ibsr->ibsr_key = ifb->ifb_key;
ibsr->ibsr_mode = ifb->ifb_mode;
ibsr->ibsr_total = ifb->ifb_port_count;
dst = proc_is64bit(current_proc())
? ibsr->ibsr_ibsru.ibsru_buffer64
: CAST_USER_ADDR_T(ibsr->ibsr_ibsru.ibsru_buffer);
if (dst == USER_ADDR_NULL) {
/* just want to know how many there are */
goto done;
}
if (ibsr->ibsr_count < 0) {
return EINVAL;
}
count = (ifb->ifb_port_count < ibsr->ibsr_count)
? ifb->ifb_port_count : ibsr->ibsr_count;
TAILQ_FOREACH(port, &ifb->ifb_port_list, po_port_list) {
struct if_bond_partner_state * ibps_p;
partner_state_ref ps;
if (count == 0) {
break;
}
bzero(&ibs, sizeof(ibs));
strbufcpy(ibs.ibs_if_name, port->po_name);
ibs.ibs_port_priority = port->po_priority;
if (ifb->ifb_mode == IF_BOND_MODE_LACP) {
ibs.ibs_state = port->po_actor_state;
ibs.ibs_selected_state = port->po_selected;
ps = &port->po_partner_state;
ibps_p = &ibs.ibs_partner_state;
ibps_p->ibps_system = ps->ps_lag_info.li_system;
ibps_p->ibps_system_priority = ps->ps_lag_info.li_system_priority;
ibps_p->ibps_key = ps->ps_lag_info.li_key;
ibps_p->ibps_port = ps->ps_port;
ibps_p->ibps_port_priority = ps->ps_port_priority;
ibps_p->ibps_state = ps->ps_state;
} else {
/* fake the selected information */
ibs.ibs_selected_state = bondport_flags_distributing(port)
? SelectedState_SELECTED : SelectedState_UNSELECTED;
}
error = copyout(&ibs, dst, sizeof(ibs));
if (error != 0) {
break;
}
dst += sizeof(ibs);
count--;
}
done:
if (error == 0) {
error = copyout(ibr_p, datap, sizeof(*ibr_p));
} else {
(void)copyout(ibr_p, datap, sizeof(*ibr_p));
}
return error;
}
static int
bond_set_promisc(struct ifnet * ifp)
{
int error = 0;
ifbond_ref ifb;
bool is_promisc;
bondport_ref p;
int val;
is_promisc = (ifnet_flags(ifp) & IFF_PROMISC) != 0;
/* determine whether promiscuous state needs to be changed */
bond_lock();
ifb = (ifbond_ref)ifnet_softc(ifp);
if (ifb == NULL) {
bond_unlock();
error = EBUSY;
goto done;
}
if (is_promisc == ifbond_flags_promisc(ifb)) {
/* already in the right state */
bond_unlock();
goto done;
}
ifbond_retain(ifb);
ifbond_wait(ifb, __func__);
if (ifbond_flags_if_detaching(ifb)) {
/* someone destroyed the bond while we were waiting */
error = EBUSY;
goto signal_done;
}
bond_unlock();
/* update the promiscuous state of each memeber */
val = is_promisc ? 1 : 0;
TAILQ_FOREACH(p, &ifb->ifb_port_list, po_port_list) {
struct ifnet * port_ifp = p->po_ifp;
bool port_is_promisc;
port_is_promisc = uint32_bit_is_set(p->po_control_flags,
PORT_CONTROL_FLAGS_BOND_PROMISCUOUS_SET);
if (port_is_promisc == is_promisc) {
/* already in the right state */
continue;
}
error = ifnet_set_promiscuous(port_ifp, val);
if (error != 0) {
BOND_LOG(LOG_NOTICE, BD_DBGF_LIFECYCLE,
"%s: ifnet_set_promiscuous(%s, %d): failed %d",
ifb->ifb_name, port_ifp->if_xname, val, error);
continue;
}
BOND_LOG(LOG_DEBUG, BD_DBGF_LIFECYCLE,
"%s: ifnet_set_promiscuous(%s, %d): succeeded",
ifb->ifb_name, port_ifp->if_xname, val);
if (is_promisc) {
/* remember that we set it */
uint32_bit_set(&p->po_control_flags,
PORT_CONTROL_FLAGS_BOND_PROMISCUOUS_SET);
} else {
uint32_bit_clear(&p->po_control_flags,
PORT_CONTROL_FLAGS_BOND_PROMISCUOUS_SET);
}
}
/* assume that updating promiscuous state succeeded */
error = 0;
bond_lock();
/* update our internal state */
if (is_promisc) {
ifbond_flags_set_promisc(ifb);
} else {
ifbond_flags_clear_promisc(ifb);
}
signal_done:
ifbond_signal(ifb, __func__);
bond_unlock();
ifbond_release(ifb);
done:
return error;
}
static void
bond_get_mtu_values(ifbond_ref ifb, int * ret_min, int * ret_max)
{
int mtu_min = 0;
int mtu_max = 0;
bondport_ref p;
if (TAILQ_FIRST(&ifb->ifb_port_list) != NULL) {
mtu_min = IF_MINMTU;
}
TAILQ_FOREACH(p, &ifb->ifb_port_list, po_port_list) {
struct ifdevmtu * devmtu_p = &p->po_devmtu;
if (devmtu_p->ifdm_min > mtu_min) {
mtu_min = devmtu_p->ifdm_min;
}
if (mtu_max == 0 || devmtu_p->ifdm_max < mtu_max) {
mtu_max = devmtu_p->ifdm_max;
}
}
*ret_min = mtu_min;
*ret_max = mtu_max;
return;
}
static int
bond_set_mtu_on_ports(ifbond_ref ifb, int mtu)
{
int error = 0;
bondport_ref p;
TAILQ_FOREACH(p, &ifb->ifb_port_list, po_port_list) {
error = siocsifmtu(p->po_ifp, mtu);
if (error != 0) {
BOND_LOG(LOG_NOTICE, BD_DBGF_LIFECYCLE,
"%s: SIOCSIFMTU %s failed, %d",
ifb->ifb_name, bondport_get_name(p), error);
break;
}
}
return error;
}
static int
bond_set_mtu(struct ifnet * ifp, int mtu, int isdevmtu)
{
int error = 0;
ifbond_ref ifb;
int mtu_min;
int mtu_max;
int new_max;
int old_max;
bond_lock();
ifb = (ifbond_ref)ifnet_softc(ifp);
if (ifb == NULL || ifbond_flags_if_detaching(ifb)) {
error = (ifb == NULL) ? EOPNOTSUPP : EBUSY;
goto done;
}
ifbond_retain(ifb);
ifbond_wait(ifb, "bond_set_mtu");
/* check again */
if (ifnet_softc(ifp) == NULL || ifbond_flags_if_detaching(ifb)) {
error = EBUSY;
goto signal_done;
}
bond_get_mtu_values(ifb, &mtu_min, &mtu_max);
if (mtu > mtu_max) {
error = EINVAL;
goto signal_done;
}
if (mtu < mtu_min && (isdevmtu == 0 || mtu != 0)) {
/* allow SIOCSIFALTMTU to set the mtu to 0 */
error = EINVAL;
goto signal_done;
}
if (isdevmtu) {
new_max = (mtu > (int)ifnet_mtu(ifp)) ? mtu : (int)ifnet_mtu(ifp);
} else {
new_max = (mtu > ifb->ifb_altmtu) ? mtu : ifb->ifb_altmtu;
}
old_max = ((int)ifnet_mtu(ifp) > ifb->ifb_altmtu)
? (int)ifnet_mtu(ifp) : ifb->ifb_altmtu;
if (new_max != old_max) {
/* we can safely walk the list of port without the lock held */
bond_unlock();
error = bond_set_mtu_on_ports(ifb, new_max);
if (error != 0) {
/* try our best to back out of it */
(void)bond_set_mtu_on_ports(ifb, old_max);
}
bond_lock();
}
if (error == 0) {
if (isdevmtu) {
ifb->ifb_altmtu = mtu;
} else {
ifnet_set_mtu(ifp, mtu);
}
}
signal_done:
ifbond_signal(ifb, __func__);
ifbond_release(ifb);
done:
bond_unlock();
return error;
}
static int
bond_ioctl(struct ifnet *ifp, u_long cmd, void * data)
{
int error = 0;
struct if_bond_req ibr;
struct ifaddr * ifa;
ifbond_ref ifb;
struct ifreq * ifr;
struct ifmediareq32 * ifmr;
struct ifnet * port_ifp = NULL;
user_addr_t user_addr;
if (ifnet_type(ifp) != IFT_IEEE8023ADLAG) {
return EOPNOTSUPP;
}
ifr = (struct ifreq *)data;
ifa = (struct ifaddr *)data;
switch (cmd) {
case SIOCSIFADDR:
ifnet_set_flags(ifp, IFF_UP, IFF_UP);
break;
case SIOCGIFMEDIA32:
case SIOCGIFMEDIA64:
bond_lock();
ifb = (ifbond_ref)ifnet_softc(ifp);
if (ifb == NULL || ifbond_flags_if_detaching(ifb)) {
bond_unlock();
return ifb == NULL ? EOPNOTSUPP : EBUSY;
}
ifmr = (struct ifmediareq32 *)data;
ifmr->ifm_current = IFM_ETHER;
ifmr->ifm_mask = 0;
ifmr->ifm_status = IFM_AVALID;
ifmr->ifm_active = IFM_ETHER;
ifmr->ifm_count = 1;
if (ifb->ifb_mode == IF_BOND_MODE_LACP) {
if (ifb->ifb_active_lag != NULL) {
ifmr->ifm_active = ifb->ifb_active_lag->lag_active_media;
ifmr->ifm_status |= IFM_ACTIVE;
}
} else if (ifb->ifb_distributing_count > 0) {
ifmr->ifm_active
= ifb->ifb_distributing_array[0]->po_media_info.mi_active;
ifmr->ifm_status |= IFM_ACTIVE;
}
bond_unlock();
user_addr = (cmd == SIOCGIFMEDIA64) ?
((struct ifmediareq64 *)data)->ifmu_ulist :
CAST_USER_ADDR_T(((struct ifmediareq32 *)data)->ifmu_ulist);
if (user_addr != USER_ADDR_NULL) {
error = copyout(&ifmr->ifm_current,
user_addr,
sizeof(int));
}
break;
case SIOCSIFMEDIA:
/* XXX send the SIFMEDIA to all children? Or force autoselect? */
error = EINVAL;
break;
case SIOCGIFDEVMTU:
bond_lock();
ifb = (ifbond_ref)ifnet_softc(ifp);
if (ifb == NULL || ifbond_flags_if_detaching(ifb)) {
bond_unlock();
error = (ifb == NULL) ? EOPNOTSUPP : EBUSY;
break;
}
ifr->ifr_devmtu.ifdm_current = bond_device_mtu(ifp, ifb);
bond_get_mtu_values(ifb, &ifr->ifr_devmtu.ifdm_min,
&ifr->ifr_devmtu.ifdm_max);
bond_unlock();
break;
case SIOCGIFALTMTU:
bond_lock();
ifb = (ifbond_ref)ifnet_softc(ifp);
if (ifb == NULL || ifbond_flags_if_detaching(ifb)) {
bond_unlock();
error = (ifb == NULL) ? EOPNOTSUPP : EBUSY;
break;
}
ifr->ifr_mtu = ifb->ifb_altmtu;
bond_unlock();
break;
case SIOCSIFALTMTU:
error = bond_set_mtu(ifp, ifr->ifr_mtu, 1);
break;
case SIOCSIFMTU:
error = bond_set_mtu(ifp, ifr->ifr_mtu, 0);
break;
case SIOCSIFBOND:
user_addr = proc_is64bit(current_proc())
? ifr->ifr_data64 : CAST_USER_ADDR_T(ifr->ifr_data);
error = copyin(user_addr, &ibr, sizeof(ibr));
if (error) {
break;
}
switch (ibr.ibr_op) {
case IF_BOND_OP_ADD_INTERFACE:
case IF_BOND_OP_REMOVE_INTERFACE:
port_ifp = ifunit(__unsafe_null_terminated_from_indexable(ibr.ibr_ibru.ibru_if_name));
if (port_ifp == NULL) {
error = ENXIO;
break;
}
if (ifnet_type(port_ifp) != IFT_ETHER) {
error = EPROTONOSUPPORT;
break;
}
break;
case IF_BOND_OP_SET_MODE:
break;
default:
error = EOPNOTSUPP;
break;
}
if (error != 0) {
break;
}
switch (ibr.ibr_op) {
case IF_BOND_OP_ADD_INTERFACE:
error = bond_add_interface(ifp, port_ifp);
break;
case IF_BOND_OP_REMOVE_INTERFACE:
bond_lock();
ifb = (ifbond_ref)ifnet_softc(ifp);
if (ifb == NULL || ifbond_flags_if_detaching(ifb)) {
bond_unlock();
return ifb == NULL ? EOPNOTSUPP : EBUSY;
}
error = bond_remove_interface(ifb, port_ifp);
bond_unlock();
break;
case IF_BOND_OP_SET_MODE:
switch (ibr.ibr_ibru.ibru_int_val) {
case IF_BOND_MODE_LACP:
case IF_BOND_MODE_STATIC:
break;
default:
error = EINVAL;
break;
}
if (error != 0) {
break;
}
error = bond_set_mode(ifp, ibr.ibr_ibru.ibru_int_val);
break;
}
break; /* SIOCSIFBOND */
case SIOCGIFBOND:
user_addr = proc_is64bit(current_proc())
? ifr->ifr_data64 : CAST_USER_ADDR_T(ifr->ifr_data);
error = copyin(user_addr, &ibr, sizeof(ibr));
if (error) {
break;
}
switch (ibr.ibr_op) {
case IF_BOND_OP_GET_STATUS:
break;
default:
error = EOPNOTSUPP;
break;
}
if (error != 0) {
break;
}
bond_lock();
ifb = (ifbond_ref)ifnet_softc(ifp);
if (ifb == NULL || ifbond_flags_if_detaching(ifb)) {
bond_unlock();
return ifb == NULL ? EOPNOTSUPP : EBUSY;
}
switch (ibr.ibr_op) {
case IF_BOND_OP_GET_STATUS:
error = bond_get_status(ifb, &ibr, user_addr);
break;
}
bond_unlock();
break; /* SIOCGIFBOND */
case SIOCSIFLLADDR:
error = EOPNOTSUPP;
break;
case SIOCSIFFLAGS:
/* enable promiscuous mode on members */
error = bond_set_promisc(ifp);
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
error = bond_setmulti(ifp);
break;
default:
error = EOPNOTSUPP;
}
return error;
}
static void
bond_if_free(struct ifnet * ifp)
{
ifbond_ref ifb;
if (ifp == NULL) {
return;
}
bond_lock();
ifb = (ifbond_ref)ifnet_softc(ifp);
if (ifb == NULL) {
bond_unlock();
return;
}
ifbond_release(ifb);
bond_unlock();
ifnet_release(ifp);
return;
}
static void
bond_handle_event(struct ifnet * port_ifp, int event_code)
{
struct ifnet * bond_ifp = NULL;
ifbond_ref ifb;
int old_distributing_count;
bondport_ref p;
struct media_info media_info = { .mi_active = 0, .mi_status = 0 };
switch (event_code) {
case KEV_DL_IF_DETACHED:
case KEV_DL_IF_DETACHING:
break;
case KEV_DL_LINK_OFF:
case KEV_DL_LINK_ON:
media_info = interface_media_info(port_ifp);
break;
default:
return;
}
bond_lock();
p = bond_lookup_port(port_ifp);
if (p == NULL) {
bond_unlock();
return;
}
ifb = p->po_bond;
old_distributing_count = ifb->ifb_distributing_count;
switch (event_code) {
case KEV_DL_IF_DETACHED:
case KEV_DL_IF_DETACHING:
bond_remove_interface(ifb, p->po_ifp);
break;
case KEV_DL_LINK_OFF:
case KEV_DL_LINK_ON:
p->po_media_info = media_info;
if (p->po_enabled) {
bondport_link_status_changed(p);
}
break;
}
/* generate a link-event */
if (ifb->ifb_mode == IF_BOND_MODE_LACP) {
if (ifbond_selection(ifb)) {
event_code = (ifb->ifb_active_lag == NULL)
? KEV_DL_LINK_OFF
: KEV_DL_LINK_ON;
/* XXX need to take a reference on bond_ifp */
bond_ifp = ifb->ifb_ifp;
ifb->ifb_last_link_event = event_code;
} else {
event_code = (ifb->ifb_active_lag == NULL)
? KEV_DL_LINK_OFF
: KEV_DL_LINK_ON;
if (event_code != ifb->ifb_last_link_event) {
BOND_LOG(LOG_NOTICE, BD_DBGF_LIFECYCLE,
"%s: (event) generating LINK event",
ifb->ifb_name);
bond_ifp = ifb->ifb_ifp;
ifb->ifb_last_link_event = event_code;
}
}
} else {
/*
* if the distributing array membership changed from 0 <-> !0
* generate a link event
*/
if (old_distributing_count == 0
&& ifb->ifb_distributing_count != 0) {
event_code = KEV_DL_LINK_ON;
} else if (old_distributing_count != 0
&& ifb->ifb_distributing_count == 0) {
event_code = KEV_DL_LINK_OFF;
}
if (event_code != 0 && event_code != ifb->ifb_last_link_event) {
bond_ifp = ifb->ifb_ifp;
ifb->ifb_last_link_event = event_code;
}
}
bond_unlock();
if (bond_ifp != NULL) {
interface_link_event(bond_ifp, event_code);
}
return;
}
static void
bond_event(struct ifnet * port_ifp, __unused protocol_family_t protocol,
const struct kev_msg * event)
{
int event_code;
if (event->vendor_code != KEV_VENDOR_APPLE
|| event->kev_class != KEV_NETWORK_CLASS
|| event->kev_subclass != KEV_DL_SUBCLASS) {
return;
}
event_code = event->event_code;
switch (event_code) {
case KEV_DL_LINK_OFF:
case KEV_DL_LINK_ON:
case KEV_DL_IF_DETACHING:
case KEV_DL_IF_DETACHED:
bond_handle_event(port_ifp, event_code);
break;
default:
break;
}
return;
}
static errno_t
bond_detached(ifnet_t port_ifp, __unused protocol_family_t protocol)
{
bond_handle_event(port_ifp, KEV_DL_IF_DETACHED);
return 0;
}
static void
interface_link_event(struct ifnet * ifp, u_int32_t event_code)
{
struct event {
u_int32_t ifnet_family;
u_int32_t unit;
char if_name[IFNAMSIZ];
};
_Alignas(struct kern_event_msg) char message[sizeof(struct kern_event_msg) + sizeof(struct event)] = { 0 };
struct kern_event_msg *header = (struct kern_event_msg*)message;
struct event *data = (struct event *)(message + KEV_MSG_HEADER_SIZE);
header->total_size = sizeof(message);
header->vendor_code = KEV_VENDOR_APPLE;
header->kev_class = KEV_NETWORK_CLASS;
header->kev_subclass = KEV_DL_SUBCLASS;
header->event_code = event_code;
data->ifnet_family = ifnet_family(ifp);
data->unit = (u_int32_t)ifnet_unit(ifp);
strlcpy(data->if_name, ifnet_name(ifp), sizeof(data->if_name));
ifnet_event(ifp, header);
}
/*
* Function: bond_attach_protocol
* Purpose:
* Attach a DLIL protocol to the interface.
*
* The ethernet demux special cases to always return PF_BOND if the
* interface is bonded. That means we receive all traffic from that
* interface without passing any of the traffic to any other attached
* protocol.
*/
static int
bond_attach_protocol(struct ifnet *ifp)
{
int error;
struct ifnet_attach_proto_param_v2 reg;
bzero(®, sizeof(reg));
reg.input = bond_input;
reg.event = bond_event;
reg.detached = bond_detached;
error = ifnet_attach_protocol_v2(ifp, PF_BOND, ®);
if (error != 0) {
BOND_LOG(LOG_NOTICE, BD_DBGF_LIFECYCLE,
"%s: ifnet_attach_protocol failed, %d",
ifp->if_xname, error);
}
return error;
}
/*
* Function: bond_detach_protocol
* Purpose:
* Detach our DLIL protocol from an interface
*/
static int
bond_detach_protocol(struct ifnet *ifp)
{
int error;
error = ifnet_detach_protocol(ifp, PF_BOND);
if (error != 0) {
BOND_LOG(LOG_NOTICE, BD_DBGF_LIFECYCLE,
"%s: ifnet_detach_protocol failed, %d",
ifp->if_xname, error);
}
return error;
}
/*
* DLIL interface family functions
*/
extern int ether_attach_inet(ifnet_t ifp, protocol_family_t protocol_family);
extern void ether_detach_inet(ifnet_t ifp, protocol_family_t protocol_family);
extern int ether_attach_inet6(ifnet_t ifp, protocol_family_t protocol_family);
extern void ether_detach_inet6(ifnet_t ifp, protocol_family_t protocol_family);
extern int ether_attach_at(ifnet_t ifp, protocol_family_t protocol_family);
extern void ether_detach_at(ifnet_t ifp, protocol_family_t protocol_family);
__private_extern__ int
bond_family_init(void)
{
int error = 0;
error = proto_register_plumber(PF_INET, APPLE_IF_FAM_BOND,
ether_attach_inet,
ether_detach_inet);
if (error != 0) {
BOND_LOG(LOG_NOTICE, BD_DBGF_LIFECYCLE,
"proto_register_plumber failed for AF_INET error %d",
error);
goto done;
}
error = proto_register_plumber(PF_INET6, APPLE_IF_FAM_BOND,
ether_attach_inet6,
ether_detach_inet6);
if (error != 0) {
BOND_LOG(LOG_NOTICE, BD_DBGF_LIFECYCLE,
"proto_register_plumber failed for AF_INET6 error %d",
error);
goto done;
}
error = bond_clone_attach();
if (error != 0) {
BOND_LOG(LOG_NOTICE, BD_DBGF_LIFECYCLE,
"bond_clone_attach error %d",
error);
goto done;
}
done:
return error;
}
/**
**
** LACP routines:
**
**/
/**
** LACP ifbond_list routines
**/
static bondport_ref
ifbond_list_find_moved_port(bondport_ref rx_port,
const lacp_actor_partner_tlv_ref atlv)
{
ifbond_ref bond;
bondport_ref p;
partner_state_ref ps;
LAG_info_ref ps_li;
TAILQ_FOREACH(bond, &g_bond->ifbond_list, ifb_bond_list) {
TAILQ_FOREACH(p, &bond->ifb_port_list, po_port_list) {
if (rx_port == p) {
/* no point in comparing against ourselves */
continue;
}
if (p->po_receive_state != ReceiveState_PORT_DISABLED) {
/* it's not clear that we should be checking this */
continue;
}
ps = &p->po_partner_state;
if (lacp_actor_partner_state_defaulted(ps->ps_state)) {
continue;
}
ps_li = &ps->ps_lag_info;
if (ps->ps_port == lacp_actor_partner_tlv_get_port(atlv)
&& bcmp(&ps_li->li_system, atlv->lap_system,
sizeof(ps_li->li_system)) == 0) {
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"System " EA_FORMAT
" Port 0x%x moved from %s to %s",
EA_LIST(&ps_li->li_system), ps->ps_port,
bondport_get_name(p),
bondport_get_name(rx_port));
return p;
}
}
}
return NULL;
}
/**
** LACP ifbond, LAG routines
**/
static int
ifbond_selection(ifbond_ref bond)
{
int all_ports_ready = 0;
int active_media = 0;
LAG_ref lag = NULL;
int lag_changed = 0;
bondport_ref p;
int port_speed = 0;
lag = ifbond_find_best_LAG(bond, &active_media);
if (lag != bond->ifb_active_lag) {
if (bond->ifb_active_lag != NULL) {
ifbond_deactivate_LAG(bond, bond->ifb_active_lag);
bond->ifb_active_lag = NULL;
}
bond->ifb_active_lag = lag;
if (lag != NULL) {
ifbond_activate_LAG(bond, lag, active_media);
}
lag_changed = 1;
} else if (lag != NULL) {
if (lag->lag_active_media != active_media) {
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"LAG PORT SPEED CHANGED from %d to %d",
link_speed(lag->lag_active_media),
link_speed(active_media));
ifbond_deactivate_LAG(bond, lag);
ifbond_activate_LAG(bond, lag, active_media);
lag_changed = 1;
}
}
if (lag != NULL) {
port_speed = link_speed(active_media);
all_ports_ready = ifbond_all_ports_ready(bond);
}
TAILQ_FOREACH(p, &bond->ifb_port_list, po_port_list) {
if (lag != NULL && p->po_lag == lag
&& media_speed(&p->po_media_info) == port_speed
&& (p->po_mux_state == MuxState_DETACHED
|| p->po_selected == SelectedState_SELECTED
|| p->po_selected == SelectedState_STANDBY)
&& bondport_aggregatable(p)) {
if (bond->ifb_max_active > 0) {
if (lag->lag_selected_port_count < bond->ifb_max_active) {
if (p->po_selected == SelectedState_STANDBY
|| p->po_selected == SelectedState_UNSELECTED) {
bondport_set_selected(p, SelectedState_SELECTED);
}
} else if (p->po_selected == SelectedState_UNSELECTED) {
bondport_set_selected(p, SelectedState_STANDBY);
}
} else {
bondport_set_selected(p, SelectedState_SELECTED);
}
}
if (bondport_flags_selected_changed(p)) {
bondport_flags_clear_selected_changed(p);
bondport_mux_machine(p, LAEventSelectedChange, NULL);
}
if (all_ports_ready
&& bondport_flags_ready(p)
&& p->po_mux_state == MuxState_WAITING) {
bondport_mux_machine(p, LAEventReady, NULL);
}
bondport_transmit_machine(p, LAEventStart, NULL);
}
return lag_changed;
}
static LAG_ref
ifbond_find_best_LAG(ifbond_ref bond, int * active_media)
{
int best_active = 0;
LAG_ref best_lag = NULL;
int best_count = 0;
int best_speed = 0;
LAG_ref lag;
if (bond->ifb_active_lag != NULL) {
best_lag = bond->ifb_active_lag;
best_count = LAG_get_aggregatable_port_count(best_lag, &best_active);
if (bond->ifb_max_active > 0
&& best_count > bond->ifb_max_active) {
best_count = bond->ifb_max_active;
}
best_speed = link_speed(best_active);
}
TAILQ_FOREACH(lag, &bond->ifb_lag_list, lag_list) {
int active;
int count;
int speed;
if (lag == bond->ifb_active_lag) {
/* we've already computed it */
continue;
}
count = LAG_get_aggregatable_port_count(lag, &active);
if (count == 0) {
continue;
}
if (bond->ifb_max_active > 0
&& count > bond->ifb_max_active) {
/* if there's a limit, don't count extra links */
count = bond->ifb_max_active;
}
speed = link_speed(active);
if ((count * speed) > (best_count * best_speed)) {
best_count = count;
best_speed = speed;
best_active = active;
best_lag = lag;
}
}
if (best_count == 0) {
return NULL;
}
*active_media = best_active;
return best_lag;
}
static void
ifbond_deactivate_LAG(__unused ifbond_ref bond, LAG_ref lag)
{
bondport_ref p;
TAILQ_FOREACH(p, &lag->lag_port_list, po_lag_port_list) {
bondport_set_selected(p, SelectedState_UNSELECTED);
}
return;
}
static void
ifbond_activate_LAG(ifbond_ref bond, LAG_ref lag, int active_media)
{
int need = 0;
bondport_ref p;
if (bond->ifb_max_active > 0) {
need = bond->ifb_max_active;
}
lag->lag_active_media = active_media;
TAILQ_FOREACH(p, &lag->lag_port_list, po_lag_port_list) {
if (bondport_aggregatable(p) == 0) {
bondport_set_selected(p, SelectedState_UNSELECTED);
} else if (media_speed(&p->po_media_info) != link_speed(active_media)) {
bondport_set_selected(p, SelectedState_UNSELECTED);
} else if (p->po_mux_state == MuxState_DETACHED) {
if (bond->ifb_max_active > 0) {
if (need > 0) {
bondport_set_selected(p, SelectedState_SELECTED);
need--;
} else {
bondport_set_selected(p, SelectedState_STANDBY);
}
} else {
bondport_set_selected(p, SelectedState_SELECTED);
}
} else {
bondport_set_selected(p, SelectedState_UNSELECTED);
}
}
return;
}
#if 0
static void
ifbond_set_max_active(ifbond_ref bond, int max_active)
{
LAG_ref lag = bond->ifb_active_lag;
bond->ifb_max_active = max_active;
if (bond->ifb_max_active <= 0 || lag == NULL) {
return;
}
if (lag->lag_selected_port_count > bond->ifb_max_active) {
bondport_ref p;
int remove_count;
remove_count = lag->lag_selected_port_count - bond->ifb_max_active;
TAILQ_FOREACH(p, &lag->lag_port_list, po_lag_port_list) {
if (p->po_selected == SelectedState_SELECTED) {
bondport_set_selected(p, SelectedState_UNSELECTED);
remove_count--;
if (remove_count == 0) {
break;
}
}
}
}
return;
}
#endif
static int
ifbond_all_ports_ready(ifbond_ref bond)
{
int ready = 0;
bondport_ref p;
if (bond->ifb_active_lag == NULL) {
return 0;
}
TAILQ_FOREACH(p, &bond->ifb_active_lag->lag_port_list, po_lag_port_list) {
if (p->po_mux_state == MuxState_WAITING
&& p->po_selected == SelectedState_SELECTED) {
if (bondport_flags_ready(p) == 0) {
return 0;
}
}
/* note that there was at least one ready port */
ready = 1;
}
return ready;
}
static int
ifbond_all_ports_attached(ifbond_ref bond, bondport_ref this_port)
{
bondport_ref p;
TAILQ_FOREACH(p, &bond->ifb_port_list, po_port_list) {
if (this_port == p) {
continue;
}
if (bondport_flags_mux_attached(p) == 0) {
return 0;
}
}
return 1;
}
static LAG_ref
ifbond_get_LAG_matching_port(ifbond_ref bond, bondport_ref p)
{
LAG_ref lag;
TAILQ_FOREACH(lag, &bond->ifb_lag_list, lag_list) {
if (bcmp(&lag->lag_info, &p->po_partner_state.ps_lag_info,
sizeof(lag->lag_info)) == 0) {
return lag;
}
}
return NULL;
}
static int
LAG_get_aggregatable_port_count(LAG_ref lag, int * active_media)
{
int active;
int count;
bondport_ref p;
int speed;
active = 0;
count = 0;
speed = 0;
TAILQ_FOREACH(p, &lag->lag_port_list, po_lag_port_list) {
if (bondport_aggregatable(p)) {
int this_speed;
this_speed = media_speed(&p->po_media_info);
if (this_speed == 0) {
continue;
}
if (this_speed > speed) {
active = p->po_media_info.mi_active;
speed = this_speed;
count = 1;
} else if (this_speed == speed) {
count++;
}
}
}
*active_media = active;
return count;
}
/**
** LACP bondport routines
**/
static void
bondport_link_status_changed(bondport_ref p)
{
ifbond_ref bond = p->po_bond;
if (if_bond_debug) {
if (media_active(&p->po_media_info)) {
const char * duplex_string;
if (media_full_duplex(&p->po_media_info)) {
duplex_string = "full";
} else if (media_type_unknown(&p->po_media_info)) {
duplex_string = "unknown";
} else {
duplex_string = "half";
}
BOND_LOG(LOG_NOTICE, BD_DBGF_LACP,
"[%s] Link UP %d Mbit/s %s duplex",
bondport_get_name(p),
media_speed(&p->po_media_info),
duplex_string);
} else {
BOND_LOG(LOG_NOTICE, BD_DBGF_LACP,
"[%s] Link DOWN", bondport_get_name(p));
}
}
if (bond->ifb_mode == IF_BOND_MODE_LACP) {
if (media_active(&p->po_media_info)
&& bond->ifb_active_lag != NULL
&& p->po_lag == bond->ifb_active_lag
&& p->po_selected != SelectedState_UNSELECTED) {
if (media_speed(&p->po_media_info) != p->po_lag->lag_active_media) {
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Port speed %d differs from LAG %d",
bondport_get_name(p),
media_speed(&p->po_media_info),
link_speed(p->po_lag->lag_active_media));
bondport_set_selected(p, SelectedState_UNSELECTED);
}
}
bondport_receive_machine(p, LAEventMediaChange, NULL);
bondport_mux_machine(p, LAEventMediaChange, NULL);
bondport_periodic_transmit_machine(p, LAEventMediaChange, NULL);
} else {
if (media_active(&p->po_media_info)) {
bondport_enable_distributing(p);
} else {
bondport_disable_distributing(p);
}
}
return;
}
static int
bondport_aggregatable(bondport_ref p)
{
partner_state_ref ps = &p->po_partner_state;
if (lacp_actor_partner_state_aggregatable(p->po_actor_state) == 0
|| lacp_actor_partner_state_aggregatable(ps->ps_state) == 0) {
/* we and/or our partner are individual */
return 0;
}
if (p->po_lag == NULL) {
return 0;
}
switch (p->po_receive_state) {
default:
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Port is not selectable",
bondport_get_name(p));
return 0;
case ReceiveState_CURRENT:
case ReceiveState_EXPIRED:
break;
}
return 1;
}
static int
bondport_matches_LAG(bondport_ref p, LAG_ref lag)
{
LAG_info_ref lag_li;
partner_state_ref ps;
LAG_info_ref ps_li;
ps = &p->po_partner_state;
ps_li = &ps->ps_lag_info;
lag_li = &lag->lag_info;
if (ps_li->li_system_priority == lag_li->li_system_priority
&& ps_li->li_key == lag_li->li_key
&& (bcmp(&ps_li->li_system, &lag_li->li_system,
sizeof(lag_li->li_system))
== 0)) {
return 1;
}
return 0;
}
static int
bondport_remove_from_LAG(bondport_ref p)
{
int active_lag = 0;
ifbond_ref bond = p->po_bond;
LAG_ref lag = p->po_lag;
if (lag == NULL) {
return 0;
}
TAILQ_REMOVE(&lag->lag_port_list, p, po_lag_port_list);
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Removed from LAG (0x%04x," EA_FORMAT ",0x%04x)",
bondport_get_name(p), lag->lag_info.li_system_priority,
EA_LIST(&lag->lag_info.li_system), lag->lag_info.li_key);
p->po_lag = NULL;
lag->lag_port_count--;
if (lag->lag_port_count > 0) {
return bond->ifb_active_lag == lag;
}
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"Key 0x%04x: LAG Released (%04x," EA_FORMAT ",0x%04x)",
bond->ifb_key,
lag->lag_info.li_system_priority,
EA_LIST(&lag->lag_info.li_system),
lag->lag_info.li_key);
TAILQ_REMOVE(&bond->ifb_lag_list, lag, lag_list);
if (bond->ifb_active_lag == lag) {
bond->ifb_active_lag = NULL;
active_lag = 1;
}
kfree_type(struct LAG_s, lag);
return active_lag;
}
static void
bondport_add_to_LAG(bondport_ref p, LAG_ref lag)
{
TAILQ_INSERT_TAIL(&lag->lag_port_list, p, po_lag_port_list);
p->po_lag = lag;
lag->lag_port_count++;
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Added to LAG (0x%04x," EA_FORMAT "0x%04x)",
bondport_get_name(p),
lag->lag_info.li_system_priority,
EA_LIST(&lag->lag_info.li_system),
lag->lag_info.li_key);
return;
}
static void
bondport_assign_to_LAG(bondport_ref p)
{
ifbond_ref bond = p->po_bond;
LAG_ref lag;
if (lacp_actor_partner_state_defaulted(p->po_actor_state)) {
bondport_remove_from_LAG(p);
return;
}
lag = p->po_lag;
if (lag != NULL) {
if (bondport_matches_LAG(p, lag)) {
/* still OK */
return;
}
bondport_remove_from_LAG(p);
}
lag = ifbond_get_LAG_matching_port(bond, p);
if (lag != NULL) {
bondport_add_to_LAG(p, lag);
return;
}
lag = kalloc_type(struct LAG_s, Z_WAITOK);
TAILQ_INIT(&lag->lag_port_list);
lag->lag_port_count = 0;
lag->lag_selected_port_count = 0;
lag->lag_info = p->po_partner_state.ps_lag_info;
TAILQ_INSERT_TAIL(&bond->ifb_lag_list, lag, lag_list);
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"Key 0x%04x: LAG Created (0x%04x," EA_FORMAT ",0x%04x)",
bond->ifb_key, lag->lag_info.li_system_priority,
EA_LIST(&lag->lag_info.li_system), lag->lag_info.li_key);
bondport_add_to_LAG(p, lag);
return;
}
static void
bondport_receive_lacpdu(bondport_ref p, lacpdu_ref in_lacpdu_p)
{
bondport_ref moved_port;
moved_port
= ifbond_list_find_moved_port(p, (const lacp_actor_partner_tlv_ref)
&in_lacpdu_p->la_actor_tlv);
if (moved_port != NULL) {
bondport_receive_machine(moved_port, LAEventPortMoved, NULL);
}
bondport_receive_machine(p, LAEventPacket, in_lacpdu_p);
bondport_mux_machine(p, LAEventPacket, in_lacpdu_p);
bondport_periodic_transmit_machine(p, LAEventPacket, in_lacpdu_p);
return;
}
static void
bondport_set_selected(bondport_ref p, SelectedState s)
{
if (s != p->po_selected) {
ifbond_ref bond = p->po_bond;
LAG_ref lag = p->po_lag;
bondport_flags_set_selected_changed(p);
if (lag != NULL && bond->ifb_active_lag == lag) {
if (p->po_selected == SelectedState_SELECTED) {
lag->lag_selected_port_count--;
} else if (s == SelectedState_SELECTED) {
lag->lag_selected_port_count++;
}
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] SetSelected: %s (was %s)",
bondport_get_name(p),
SelectedStateString(s),
SelectedStateString(p->po_selected));
}
}
p->po_selected = s;
return;
}
/**
** Receive machine
**/
static void
bondport_UpdateDefaultSelected(bondport_ref p)
{
bondport_set_selected(p, SelectedState_UNSELECTED);
return;
}
static void
bondport_RecordDefault(bondport_ref p)
{
bzero(&p->po_partner_state, sizeof(p->po_partner_state));
p->po_actor_state
= lacp_actor_partner_state_set_defaulted(p->po_actor_state);
bondport_assign_to_LAG(p);
return;
}
static void
bondport_UpdateSelected(bondport_ref p, lacpdu_ref lacpdu_p)
{
lacp_actor_partner_tlv_ref actor;
partner_state_ref ps;
LAG_info_ref ps_li;
/* compare the PDU's Actor information to our Partner state */
actor = (lacp_actor_partner_tlv_ref)lacpdu_p->la_actor_tlv;
ps = &p->po_partner_state;
ps_li = &ps->ps_lag_info;
if (lacp_actor_partner_tlv_get_port(actor) != ps->ps_port
|| (lacp_actor_partner_tlv_get_port_priority(actor)
!= ps->ps_port_priority)
|| bcmp(actor->lap_system, &ps_li->li_system, sizeof(ps_li->li_system))
|| (lacp_actor_partner_tlv_get_system_priority(actor)
!= ps_li->li_system_priority)
|| (lacp_actor_partner_tlv_get_key(actor) != ps_li->li_key)
|| (lacp_actor_partner_state_aggregatable(actor->lap_state)
!= lacp_actor_partner_state_aggregatable(ps->ps_state))) {
bondport_set_selected(p, SelectedState_UNSELECTED);
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] updateSelected UNSELECTED",
bondport_get_name(p));
}
return;
}
static void
bondport_RecordPDU(bondport_ref p, lacpdu_ref lacpdu_p)
{
lacp_actor_partner_tlv_ref actor;
ifbond_ref bond = p->po_bond;
int lacp_maintain = 0;
partner_state_ref ps;
lacp_actor_partner_tlv_ref partner;
LAG_info_ref ps_li;
/* copy the PDU's Actor information into our Partner state */
actor = (lacp_actor_partner_tlv_ref)lacpdu_p->la_actor_tlv;
ps = &p->po_partner_state;
ps_li = &ps->ps_lag_info;
ps->ps_port = lacp_actor_partner_tlv_get_port(actor);
ps->ps_port_priority = lacp_actor_partner_tlv_get_port_priority(actor);
ps_li->li_system = *((lacp_system_ref)actor->lap_system);
ps_li->li_system_priority
= lacp_actor_partner_tlv_get_system_priority(actor);
ps_li->li_key = lacp_actor_partner_tlv_get_key(actor);
ps->ps_state = lacp_actor_partner_state_set_out_of_sync(actor->lap_state);
p->po_actor_state
= lacp_actor_partner_state_set_not_defaulted(p->po_actor_state);
/* compare the PDU's Partner information to our own information */
partner = (lacp_actor_partner_tlv_ref)lacpdu_p->la_partner_tlv;
if (lacp_actor_partner_state_active_lacp(ps->ps_state)
|| (lacp_actor_partner_state_active_lacp(p->po_actor_state)
&& lacp_actor_partner_state_active_lacp(partner->lap_state))) {
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] recordPDU: LACP will maintain", bondport_get_name(p));
lacp_maintain = 1;
}
if ((lacp_actor_partner_tlv_get_port(partner)
== bondport_get_index(p))
&& lacp_actor_partner_tlv_get_port_priority(partner) == p->po_priority
&& bcmp(partner->lap_system, &g_bond->system,
sizeof(g_bond->system)) == 0
&& (lacp_actor_partner_tlv_get_system_priority(partner)
== g_bond->system_priority)
&& lacp_actor_partner_tlv_get_key(partner) == bond->ifb_key
&& (lacp_actor_partner_state_aggregatable(partner->lap_state)
== lacp_actor_partner_state_aggregatable(p->po_actor_state))
&& lacp_actor_partner_state_in_sync(actor->lap_state)
&& lacp_maintain) {
ps->ps_state = lacp_actor_partner_state_set_in_sync(ps->ps_state);
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] recordPDU: LACP partner in sync",
bondport_get_name(p));
} else if (lacp_actor_partner_state_aggregatable(actor->lap_state) == 0
&& lacp_actor_partner_state_in_sync(actor->lap_state)
&& lacp_maintain) {
ps->ps_state = lacp_actor_partner_state_set_in_sync(ps->ps_state);
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] recordPDU: LACP partner in sync (ind)",
bondport_get_name(p));
}
bondport_assign_to_LAG(p);
return;
}
static __inline__ lacp_actor_partner_state
updateNTTBits(lacp_actor_partner_state s)
{
return s & (LACP_ACTOR_PARTNER_STATE_LACP_ACTIVITY
| LACP_ACTOR_PARTNER_STATE_LACP_TIMEOUT
| LACP_ACTOR_PARTNER_STATE_AGGREGATION
| LACP_ACTOR_PARTNER_STATE_SYNCHRONIZATION);
}
static void
bondport_UpdateNTT(bondport_ref p, lacpdu_ref lacpdu_p)
{
ifbond_ref bond = p->po_bond;
lacp_actor_partner_tlv_ref partner;
/* compare the PDU's Actor information to our Partner state */
partner = (lacp_actor_partner_tlv_ref)lacpdu_p->la_partner_tlv;
if ((lacp_actor_partner_tlv_get_port(partner) != bondport_get_index(p))
|| lacp_actor_partner_tlv_get_port_priority(partner) != p->po_priority
|| bcmp(partner->lap_system, &g_bond->system, sizeof(g_bond->system))
|| (lacp_actor_partner_tlv_get_system_priority(partner)
!= g_bond->system_priority)
|| lacp_actor_partner_tlv_get_key(partner) != bond->ifb_key
|| (updateNTTBits(partner->lap_state)
!= updateNTTBits(p->po_actor_state))) {
bondport_flags_set_ntt(p);
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] updateNTT: Need To Transmit", bondport_get_name(p));
}
return;
}
static void
bondport_AttachMuxToAggregator(bondport_ref p)
{
if (bondport_flags_mux_attached(p) == 0) {
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Attached Mux To Aggregator", bondport_get_name(p));
bondport_flags_set_mux_attached(p);
}
return;
}
static void
bondport_DetachMuxFromAggregator(bondport_ref p)
{
if (bondport_flags_mux_attached(p)) {
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Detached Mux From Aggregator", bondport_get_name(p));
bondport_flags_clear_mux_attached(p);
}
return;
}
static void
bondport_enable_distributing(bondport_ref p)
{
if (bondport_flags_distributing(p) == 0) {
ifbond_ref bond = p->po_bond;
bond->ifb_distributing_array[bond->ifb_distributing_count++] = p;
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Distribution Enabled", bondport_get_name(p));
bondport_flags_set_distributing(p);
}
return;
}
static void
bondport_disable_distributing(bondport_ref p)
{
if (bondport_flags_distributing(p)) {
bondport_ref * array;
ifbond_ref bond;
int count;
int i;
bond = p->po_bond;
array = bond->ifb_distributing_array;
count = bond->ifb_distributing_count;
for (i = 0; i < count; i++) {
if (array[i] == p) {
int j;
for (j = i; j < (count - 1); j++) {
array[j] = array[j + 1];
}
break;
}
}
bond->ifb_distributing_count--;
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Distribution Disabled", bondport_get_name(p));
bondport_flags_clear_distributing(p);
}
return;
}
/**
** Receive machine functions
**/
static void
bondport_receive_machine_initialize(bondport_ref p, LAEvent event,
void * event_data);
static void
bondport_receive_machine_port_disabled(bondport_ref p, LAEvent event,
void * event_data);
static void
bondport_receive_machine_expired(bondport_ref p, LAEvent event,
void * event_data);
static void
bondport_receive_machine_lacp_disabled(bondport_ref p, LAEvent event,
void * event_data);
static void
bondport_receive_machine_defaulted(bondport_ref p, LAEvent event,
void * event_data);
static void
bondport_receive_machine_current(bondport_ref p, LAEvent event,
void * event_data);
static void
bondport_receive_machine_event(bondport_ref p, LAEvent event,
void * event_data)
{
switch (p->po_receive_state) {
case ReceiveState_none:
bondport_receive_machine_initialize(p, LAEventStart, NULL);
break;
case ReceiveState_INITIALIZE:
bondport_receive_machine_initialize(p, event, event_data);
break;
case ReceiveState_PORT_DISABLED:
bondport_receive_machine_port_disabled(p, event, event_data);
break;
case ReceiveState_EXPIRED:
bondport_receive_machine_expired(p, event, event_data);
break;
case ReceiveState_LACP_DISABLED:
bondport_receive_machine_lacp_disabled(p, event, event_data);
break;
case ReceiveState_DEFAULTED:
bondport_receive_machine_defaulted(p, event, event_data);
break;
case ReceiveState_CURRENT:
bondport_receive_machine_current(p, event, event_data);
break;
default:
break;
}
return;
}
static void
bondport_receive_machine(bondport_ref p, LAEvent event,
void * event_data)
{
switch (event) {
case LAEventPacket:
if (p->po_receive_state != ReceiveState_LACP_DISABLED) {
bondport_receive_machine_current(p, event, event_data);
}
break;
case LAEventMediaChange:
if (media_active(&p->po_media_info)) {
switch (p->po_receive_state) {
case ReceiveState_PORT_DISABLED:
case ReceiveState_LACP_DISABLED:
bondport_receive_machine_port_disabled(p, LAEventMediaChange, NULL);
break;
default:
break;
}
} else {
bondport_receive_machine_port_disabled(p, LAEventStart, NULL);
}
break;
default:
bondport_receive_machine_event(p, event, event_data);
break;
}
return;
}
static void
bondport_receive_machine_initialize(bondport_ref p, LAEvent event,
__unused void * event_data)
{
switch (event) {
case LAEventStart:
devtimer_cancel(p->po_current_while_timer);
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Receive INITIALIZE", bondport_get_name(p));
p->po_receive_state = ReceiveState_INITIALIZE;
bondport_set_selected(p, SelectedState_UNSELECTED);
bondport_RecordDefault(p);
p->po_actor_state
= lacp_actor_partner_state_set_not_expired(p->po_actor_state);
bondport_receive_machine_port_disabled(p, LAEventStart, NULL);
break;
default:
break;
}
return;
}
static void
bondport_receive_machine_port_disabled(bondport_ref p, LAEvent event,
__unused void * event_data)
{
partner_state_ref ps;
switch (event) {
case LAEventStart:
devtimer_cancel(p->po_current_while_timer);
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Receive PORT_DISABLED", bondport_get_name(p));
p->po_receive_state = ReceiveState_PORT_DISABLED;
ps = &p->po_partner_state;
ps->ps_state = lacp_actor_partner_state_set_out_of_sync(ps->ps_state);
OS_FALLTHROUGH;
case LAEventMediaChange:
if (media_active(&p->po_media_info)) {
if (media_ok(&p->po_media_info)) {
bondport_receive_machine_expired(p, LAEventStart, NULL);
} else {
bondport_receive_machine_lacp_disabled(p, LAEventStart, NULL);
}
} else if (p->po_selected == SelectedState_SELECTED) {
struct timeval tv;
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Receive PORT_DISABLED: link timer started",
bondport_get_name(p));
tv.tv_sec = 1;
tv.tv_usec = 0;
devtimer_set_relative(p->po_current_while_timer, tv,
(devtimer_timeout_func)(void (*)(void))
bondport_receive_machine_port_disabled,
__unsafe_forge_single(void *, LAEventTimeout), NULL);
} else if (p->po_selected == SelectedState_STANDBY) {
bondport_set_selected(p, SelectedState_UNSELECTED);
}
break;
case LAEventTimeout:
if (p->po_selected == SelectedState_SELECTED) {
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Receive PORT_DISABLED: "
"link timer completed, marking UNSELECTED",
bondport_get_name(p));
bondport_set_selected(p, SelectedState_UNSELECTED);
}
break;
case LAEventPortMoved:
bondport_receive_machine_initialize(p, LAEventStart, NULL);
break;
default:
break;
}
return;
}
static void
bondport_receive_machine_expired(bondport_ref p, LAEvent event,
__unused void * event_data)
{
lacp_actor_partner_state s;
struct timeval tv;
switch (event) {
case LAEventStart:
devtimer_cancel(p->po_current_while_timer);
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Receive EXPIRED", bondport_get_name(p));
p->po_receive_state = ReceiveState_EXPIRED;
s = p->po_partner_state.ps_state;
s = lacp_actor_partner_state_set_out_of_sync(s);
s = lacp_actor_partner_state_set_short_timeout(s);
p->po_partner_state.ps_state = s;
p->po_actor_state
= lacp_actor_partner_state_set_expired(p->po_actor_state);
/* start current_while timer */
tv.tv_sec = LACP_SHORT_TIMEOUT_TIME;
tv.tv_usec = 0;
devtimer_set_relative(p->po_current_while_timer, tv,
(devtimer_timeout_func)(void (*)(void))
bondport_receive_machine_expired,
__unsafe_forge_single(void *, LAEventTimeout), NULL);
break;
case LAEventTimeout:
bondport_receive_machine_defaulted(p, LAEventStart, NULL);
break;
default:
break;
}
return;
}
static void
bondport_receive_machine_lacp_disabled(bondport_ref p, LAEvent event,
__unused void * event_data)
{
partner_state_ref ps;
switch (event) {
case LAEventStart:
devtimer_cancel(p->po_current_while_timer);
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Receive LACP_DISABLED", bondport_get_name(p));
p->po_receive_state = ReceiveState_LACP_DISABLED;
bondport_set_selected(p, SelectedState_UNSELECTED);
bondport_RecordDefault(p);
ps = &p->po_partner_state;
ps->ps_state = lacp_actor_partner_state_set_individual(ps->ps_state);
p->po_actor_state
= lacp_actor_partner_state_set_not_expired(p->po_actor_state);
break;
default:
break;
}
return;
}
static void
bondport_receive_machine_defaulted(bondport_ref p, LAEvent event,
__unused void * event_data)
{
switch (event) {
case LAEventStart:
devtimer_cancel(p->po_current_while_timer);
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Receive DEFAULTED", bondport_get_name(p));
p->po_receive_state = ReceiveState_DEFAULTED;
bondport_UpdateDefaultSelected(p);
bondport_RecordDefault(p);
p->po_actor_state
= lacp_actor_partner_state_set_not_expired(p->po_actor_state);
break;
default:
break;
}
return;
}
static void
bondport_receive_machine_current(bondport_ref p, LAEvent event,
void * event_data)
{
partner_state_ref ps;
struct timeval tv;
switch (event) {
case LAEventPacket:
devtimer_cancel(p->po_current_while_timer);
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Receive CURRENT", bondport_get_name(p));
p->po_receive_state = ReceiveState_CURRENT;
bondport_UpdateSelected(p, event_data);
bondport_UpdateNTT(p, event_data);
bondport_RecordPDU(p, event_data);
p->po_actor_state
= lacp_actor_partner_state_set_not_expired(p->po_actor_state);
bondport_assign_to_LAG(p);
/* start current_while timer */
ps = &p->po_partner_state;
if (lacp_actor_partner_state_short_timeout(ps->ps_state)) {
tv.tv_sec = LACP_SHORT_TIMEOUT_TIME;
} else {
tv.tv_sec = LACP_LONG_TIMEOUT_TIME;
}
tv.tv_usec = 0;
devtimer_set_relative(p->po_current_while_timer, tv,
(devtimer_timeout_func)(void (*)(void))
bondport_receive_machine_current,
__unsafe_forge_single(void *, LAEventTimeout), NULL);
break;
case LAEventTimeout:
bondport_receive_machine_expired(p, LAEventStart, NULL);
break;
default:
break;
}
return;
}
/**
** Periodic Transmission machine
**/
static void
bondport_periodic_transmit_machine(bondport_ref p, LAEvent event,
__unused void * event_data)
{
int interval;
partner_state_ref ps;
struct timeval tv;
switch (event) {
case LAEventStart:
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] periodic_transmit Start", bondport_get_name(p));
OS_FALLTHROUGH;
case LAEventMediaChange:
devtimer_cancel(p->po_periodic_timer);
p->po_periodic_interval = 0;
if (media_active(&p->po_media_info) == 0
|| media_ok(&p->po_media_info) == 0) {
break;
}
OS_FALLTHROUGH;
case LAEventPacket:
/* Neither Partner nor Actor are LACP Active, no periodic tx */
ps = &p->po_partner_state;
if (lacp_actor_partner_state_active_lacp(p->po_actor_state) == 0
&& (lacp_actor_partner_state_active_lacp(ps->ps_state)
== 0)) {
devtimer_cancel(p->po_periodic_timer);
p->po_periodic_interval = 0;
break;
}
if (lacp_actor_partner_state_short_timeout(ps->ps_state)) {
interval = LACP_FAST_PERIODIC_TIME;
} else {
interval = LACP_SLOW_PERIODIC_TIME;
}
if (p->po_periodic_interval != interval) {
if (interval == LACP_FAST_PERIODIC_TIME
&& p->po_periodic_interval
== LACP_SLOW_PERIODIC_TIME) {
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] periodic_transmit: Need To Transmit",
bondport_get_name(p));
bondport_flags_set_ntt(p);
}
p->po_periodic_interval = interval;
tv.tv_usec = 0;
tv.tv_sec = interval;
devtimer_set_relative(p->po_periodic_timer, tv,
(devtimer_timeout_func)(void (*)(void))
bondport_periodic_transmit_machine,
__unsafe_forge_single(void *, LAEventTimeout), NULL);
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Periodic Transmission Timer: %d secs",
bondport_get_name(p),
p->po_periodic_interval);
}
break;
case LAEventTimeout:
bondport_flags_set_ntt(p);
tv.tv_sec = p->po_periodic_interval;
tv.tv_usec = 0;
devtimer_set_relative(p->po_periodic_timer, tv, (devtimer_timeout_func)(void (*)(void))
bondport_periodic_transmit_machine,
__unsafe_forge_single(void *, LAEventTimeout), NULL);
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Periodic Transmission Timer: %d secs",
bondport_get_name(p), p->po_periodic_interval);
break;
default:
break;
}
return;
}
/**
** Transmit machine
**/
static int
bondport_can_transmit(bondport_ref p, int32_t current_secs,
__darwin_time_t * next_secs)
{
if (p->po_last_transmit_secs != current_secs) {
p->po_last_transmit_secs = current_secs;
p->po_n_transmit = 0;
}
if (p->po_n_transmit < LACP_PACKET_RATE) {
p->po_n_transmit++;
return 1;
}
if (next_secs != NULL) {
*next_secs = current_secs + 1;
}
return 0;
}
static void
bondport_transmit_machine(bondport_ref p, LAEvent event,
void * event_data)
{
lacp_actor_partner_tlv_ref aptlv;
lacp_collector_tlv_ref ctlv;
struct timeval next_tick_time = {.tv_sec = 0, .tv_usec = 0};
lacpdu_ref out_lacpdu_p;
packet_buffer_ref pkt;
partner_state_ref ps;
LAG_info_ref ps_li;
switch (event) {
case LAEventTimeout:
case LAEventStart:
if (p->po_periodic_interval == 0 || bondport_flags_ntt(p) == 0) {
break;
}
if (event_data == TRANSMIT_MACHINE_TX_IMMEDIATE) {
/* we're going away, transmit the packet no matter what */
} else if (bondport_can_transmit(p, devtimer_current_secs(),
&next_tick_time.tv_sec) == 0) {
if (devtimer_enabled(p->po_transmit_timer)) {
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Transmit Timer Already Set",
bondport_get_name(p));
} else {
devtimer_set_absolute(p->po_transmit_timer, next_tick_time,
(devtimer_timeout_func)(void (*)(void))
bondport_transmit_machine,
__unsafe_forge_single(void *, LAEventTimeout), NULL);
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Transmit Timer Deadline %d secs",
bondport_get_name(p),
(int)next_tick_time.tv_sec);
}
break;
}
if (event == LAEventTimeout) {
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Transmit Timer Complete",
bondport_get_name(p));
}
pkt = packet_buffer_allocate(sizeof(*out_lacpdu_p));
if (pkt == NULL) {
printf("[%s] Transmit: failed to allocate packet buffer\n",
bondport_get_name(p));
break;
}
out_lacpdu_p = (lacpdu_ref)packet_buffer_byteptr(pkt);
bzero(out_lacpdu_p, sizeof(*out_lacpdu_p));
out_lacpdu_p->la_subtype = IEEE8023AD_SLOW_PROTO_SUBTYPE_LACP;
out_lacpdu_p->la_version = LACPDU_VERSION_1;
/* Actor */
aptlv = (lacp_actor_partner_tlv_ref)out_lacpdu_p->la_actor_tlv;
aptlv->lap_tlv_type = LACPDU_TLV_TYPE_ACTOR;
aptlv->lap_length = LACPDU_ACTOR_TLV_LENGTH;
*((lacp_system_ref)aptlv->lap_system) = g_bond->system;
lacp_actor_partner_tlv_set_system_priority(aptlv,
g_bond->system_priority);
lacp_actor_partner_tlv_set_port_priority(aptlv, p->po_priority);
lacp_actor_partner_tlv_set_port(aptlv, bondport_get_index(p));
lacp_actor_partner_tlv_set_key(aptlv, p->po_bond->ifb_key);
aptlv->lap_state = p->po_actor_state;
/* Partner */
aptlv = (lacp_actor_partner_tlv_ref)out_lacpdu_p->la_partner_tlv;
aptlv->lap_tlv_type = LACPDU_TLV_TYPE_PARTNER;
aptlv->lap_length = LACPDU_PARTNER_TLV_LENGTH;
ps = &p->po_partner_state;
ps_li = &ps->ps_lag_info;
lacp_actor_partner_tlv_set_port(aptlv, ps->ps_port);
lacp_actor_partner_tlv_set_port_priority(aptlv, ps->ps_port_priority);
*((lacp_system_ref)aptlv->lap_system) = ps_li->li_system;
lacp_actor_partner_tlv_set_system_priority(aptlv,
ps_li->li_system_priority);
lacp_actor_partner_tlv_set_key(aptlv, ps_li->li_key);
aptlv->lap_state = ps->ps_state;
/* Collector */
ctlv = (lacp_collector_tlv_ref)out_lacpdu_p->la_collector_tlv;
ctlv->lac_tlv_type = LACPDU_TLV_TYPE_COLLECTOR;
ctlv->lac_length = LACPDU_COLLECTOR_TLV_LENGTH;
bondport_slow_proto_transmit(p, pkt);
bondport_flags_clear_ntt(p);
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP, "[%s] Transmit Packet %d",
bondport_get_name(p), p->po_n_transmit);
break;
default:
break;
}
return;
}
/**
** Mux machine functions
**/
static void
bondport_mux_machine_detached(bondport_ref p, LAEvent event,
void * event_data);
static void
bondport_mux_machine_waiting(bondport_ref p, LAEvent event,
void * event_data);
static void
bondport_mux_machine_attached(bondport_ref p, LAEvent event,
void * event_data);
static void
bondport_mux_machine_collecting_distributing(bondport_ref p, LAEvent event,
void * event_data);
static void
bondport_mux_machine(bondport_ref p, LAEvent event, void * event_data)
{
switch (p->po_mux_state) {
case MuxState_none:
bondport_mux_machine_detached(p, LAEventStart, NULL);
break;
case MuxState_DETACHED:
bondport_mux_machine_detached(p, event, event_data);
break;
case MuxState_WAITING:
bondport_mux_machine_waiting(p, event, event_data);
break;
case MuxState_ATTACHED:
bondport_mux_machine_attached(p, event, event_data);
break;
case MuxState_COLLECTING_DISTRIBUTING:
bondport_mux_machine_collecting_distributing(p, event, event_data);
break;
default:
break;
}
return;
}
static void
bondport_mux_machine_detached(bondport_ref p, LAEvent event,
__unused void * event_data)
{
lacp_actor_partner_state s;
switch (event) {
case LAEventStart:
devtimer_cancel(p->po_wait_while_timer);
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP, "[%s] Mux DETACHED",
bondport_get_name(p));
p->po_mux_state = MuxState_DETACHED;
bondport_flags_clear_ready(p);
bondport_DetachMuxFromAggregator(p);
bondport_disable_distributing(p);
s = p->po_actor_state;
s = lacp_actor_partner_state_set_out_of_sync(s);
s = lacp_actor_partner_state_set_not_collecting(s);
s = lacp_actor_partner_state_set_not_distributing(s);
p->po_actor_state = s;
bondport_flags_set_ntt(p);
break;
case LAEventSelectedChange:
case LAEventPacket:
case LAEventMediaChange:
if (p->po_selected == SelectedState_SELECTED
|| p->po_selected == SelectedState_STANDBY) {
bondport_mux_machine_waiting(p, LAEventStart, NULL);
}
break;
default:
break;
}
return;
}
static void
bondport_mux_machine_waiting(bondport_ref p, LAEvent event,
__unused void * event_data)
{
struct timeval tv;
switch (event) {
case LAEventStart:
devtimer_cancel(p->po_wait_while_timer);
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP, "[%s] Mux WAITING",
bondport_get_name(p));
p->po_mux_state = MuxState_WAITING;
OS_FALLTHROUGH;
default:
case LAEventSelectedChange:
if (p->po_selected == SelectedState_UNSELECTED) {
bondport_mux_machine_detached(p, LAEventStart, NULL);
break;
}
if (p->po_selected == SelectedState_STANDBY) {
devtimer_cancel(p->po_wait_while_timer);
/* wait until state changes to SELECTED */
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Mux WAITING: Standby", bondport_get_name(p));
break;
}
if (bondport_flags_ready(p)) {
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Mux WAITING: Port is already ready",
bondport_get_name(p));
break;
}
if (devtimer_enabled(p->po_wait_while_timer)) {
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Mux WAITING: Timer already set",
bondport_get_name(p));
break;
}
if (ifbond_all_ports_attached(p->po_bond, p)) {
devtimer_cancel(p->po_wait_while_timer);
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Mux WAITING: No waiting",
bondport_get_name(p));
bondport_flags_set_ready(p);
goto no_waiting;
}
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Mux WAITING: 2 seconds", bondport_get_name(p));
tv.tv_sec = LACP_AGGREGATE_WAIT_TIME;
tv.tv_usec = 0;
devtimer_set_relative(p->po_wait_while_timer, tv,
(devtimer_timeout_func)(void (*)(void))
bondport_mux_machine_waiting,
__unsafe_forge_single(void *, LAEventTimeout), NULL);
break;
case LAEventTimeout:
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP, "[%s] Mux WAITING: Ready",
bondport_get_name(p));
bondport_flags_set_ready(p);
break;
case LAEventReady:
no_waiting:
if (bondport_flags_ready(p)) {
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Mux WAITING: All Ports Ready",
bondport_get_name(p));
bondport_mux_machine_attached(p, LAEventStart, NULL);
break;
}
break;
}
return;
}
static void
bondport_mux_machine_attached(bondport_ref p, LAEvent event,
__unused void * event_data)
{
lacp_actor_partner_state s;
switch (event) {
case LAEventStart:
devtimer_cancel(p->po_wait_while_timer);
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP, "[%s] Mux ATTACHED",
bondport_get_name(p));
p->po_mux_state = MuxState_ATTACHED;
bondport_AttachMuxToAggregator(p);
s = p->po_actor_state;
s = lacp_actor_partner_state_set_in_sync(s);
s = lacp_actor_partner_state_set_not_collecting(s);
s = lacp_actor_partner_state_set_not_distributing(s);
bondport_disable_distributing(p);
p->po_actor_state = s;
bondport_flags_set_ntt(p);
OS_FALLTHROUGH;
default:
switch (p->po_selected) {
case SelectedState_SELECTED:
s = p->po_partner_state.ps_state;
if (lacp_actor_partner_state_in_sync(s)) {
bondport_mux_machine_collecting_distributing(p,
LAEventStart, NULL);
}
break;
default:
bondport_mux_machine_detached(p, LAEventStart, NULL);
break;
}
break;
}
return;
}
static void
bondport_mux_machine_collecting_distributing(bondport_ref p,
LAEvent event,
__unused void * event_data)
{
lacp_actor_partner_state s;
switch (event) {
case LAEventStart:
devtimer_cancel(p->po_wait_while_timer);
BOND_LOG(LOG_DEBUG, BD_DBGF_LACP,
"[%s] Mux COLLECTING_DISTRIBUTING",
bondport_get_name(p));
p->po_mux_state = MuxState_COLLECTING_DISTRIBUTING;
bondport_enable_distributing(p);
s = p->po_actor_state;
s = lacp_actor_partner_state_set_collecting(s);
s = lacp_actor_partner_state_set_distributing(s);
p->po_actor_state = s;
bondport_flags_set_ntt(p);
OS_FALLTHROUGH;
default:
s = p->po_partner_state.ps_state;
if (lacp_actor_partner_state_in_sync(s) == 0) {
bondport_mux_machine_attached(p, LAEventStart, NULL);
break;
}
switch (p->po_selected) {
case SelectedState_UNSELECTED:
case SelectedState_STANDBY:
bondport_mux_machine_attached(p, LAEventStart, NULL);
break;
default:
break;
}
break;
}
return;
}