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Update the current version of netmap to bring it in sync with the github

Browse Source 
version.

This commit contains mostly refactoring, a few fixes and minor added
functionality.

Submitted by:	Vincenzo Maffione <v.maffione at gmail.com>
Requested by:	many
Sponsored by:	Rubicon Communications, LLC (Netgate)
This commit is contained in:
Luiz Otavio O Souza 2017-06-12 22:53:18 +00:00
parent 965ee74955
commit c3e9b4db8c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=319881
12 changed files with 1230 additions and 830 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
sys/dev/netmap/if_ixl_netmap.h
View File

@ -129,7 +129,7 @@ ixl_netmap_attach(struct ixl_vsi *vsi)
na.ifp = vsi->ifp;
na.na_flags = NAF_BDG_MAYSLEEP;
// XXX check that queues is set.
printf("queues is %p\n", vsi->queues);
nm_prinf("queues is %p\n", vsi->queues);
if (vsi->queues) {
na.num_tx_desc = vsi->queues[0].num_desc;
na.num_rx_desc = vsi->queues[0].num_desc;

403
sys/dev/netmap/netmap.c
View File

@ -388,7 +388,7 @@ ports attached to the switch)
*
* - VALE ports:
* concurrently:
* 1) ioctlNIOCRXSYNC)/netmap_poll() in process context
* 1) ioctl(NIOCRXSYNC)/netmap_poll() in process context
* kring->nm_sync() == netmap_vp_rxsync()
* 2) from nm_bdg_flush()
* na->nm_notify() == netmap_notify()
@ -484,7 +484,7 @@ int netmap_mitigate = 1;
int netmap_no_pendintr = 1;
int netmap_txsync_retry = 2;
int netmap_flags = 0; /* debug flags */
static int netmap_fwd = 0; /* force transparent mode */
static int netmap_fwd = 0; /* force transparent forwarding */
/*
* netmap_admode selects the netmap mode to use.
@ -522,6 +522,9 @@ int netmap_generic_rings = 1;
/* Non-zero if ptnet devices are allowed to use virtio-net headers. */
int ptnet_vnet_hdr = 1;
/* 0 if ptnetmap should not use worker threads for TX processing */
int ptnetmap_tx_workers = 1;
/*
* SYSCTL calls are grouped between SYSBEGIN and SYSEND to be emulated
* in some other operating systems
@ -548,6 +551,7 @@ SYSCTL_INT(_dev_netmap, OID_AUTO, generic_ringsize, CTLFLAG_RW, &netmap_generic_
SYSCTL_INT(_dev_netmap, OID_AUTO, generic_rings, CTLFLAG_RW, &netmap_generic_rings, 0 , "");
SYSCTL_INT(_dev_netmap, OID_AUTO, generic_txqdisc, CTLFLAG_RW, &netmap_generic_txqdisc, 0 , "");
SYSCTL_INT(_dev_netmap, OID_AUTO, ptnet_vnet_hdr, CTLFLAG_RW, &ptnet_vnet_hdr, 0 , "");
SYSCTL_INT(_dev_netmap, OID_AUTO, ptnetmap_tx_workers, CTLFLAG_RW, &ptnetmap_tx_workers, 0 , "");
SYSEND;
@ -669,7 +673,7 @@ nm_bound_var(u_int *v, u_int dflt, u_int lo, u_int hi, const char *msg)
op = "Clamp";
}
if (op && msg)
printf("%s %s to %d (was %d)\n", op, msg, *v, oldv);
nm_prinf("%s %s to %d (was %d)\n", op, msg, *v, oldv);
return *v;
}
@ -801,13 +805,18 @@ netmap_krings_create(struct netmap_adapter *na, u_int tailroom)
u_int n[NR_TXRX];
enum txrx t;
if (na->tx_rings != NULL) {
D("warning: krings were already created");
return 0;
}
/* account for the (possibly fake) host rings */
n[NR_TX] = na->num_tx_rings + 1;
n[NR_RX] = na->num_rx_rings + 1;
len = (n[NR_TX] + n[NR_RX]) * sizeof(struct netmap_kring) + tailroom;
na->tx_rings = malloc((size_t)len, M_DEVBUF, M_NOWAIT | M_ZERO);
na->tx_rings = nm_os_malloc((size_t)len);
if (na->tx_rings == NULL) {
D("Cannot allocate krings");
return ENOMEM;
@ -866,6 +875,11 @@ netmap_krings_delete(struct netmap_adapter *na)
struct netmap_kring *kring = na->tx_rings;
enum txrx t;
if (na->tx_rings == NULL) {
D("warning: krings were already deleted");
return;
}
for_rx_tx(t)
nm_os_selinfo_uninit(&na->si[t]);
@ -874,7 +888,7 @@ netmap_krings_delete(struct netmap_adapter *na)
mtx_destroy(&kring->q_lock);
nm_os_selinfo_uninit(&kring->si);
}
free(na->tx_rings, M_DEVBUF);
nm_os_free(na->tx_rings);
na->tx_rings = na->rx_rings = na->tailroom = NULL;
}
@ -983,8 +997,7 @@ netmap_priv_new(void)
{
struct netmap_priv_d *priv;
priv = malloc(sizeof(struct netmap_priv_d), M_DEVBUF,
M_NOWAIT | M_ZERO);
priv = nm_os_malloc(sizeof(struct netmap_priv_d));
if (priv == NULL)
return NULL;
priv->np_refs = 1;
@ -1016,7 +1029,7 @@ netmap_priv_delete(struct netmap_priv_d *priv)
}
netmap_unget_na(na, priv->np_ifp);
bzero(priv, sizeof(*priv)); /* for safety */
free(priv, M_DEVBUF);
nm_os_free(priv);
}
@ -1032,20 +1045,27 @@ netmap_dtor(void *data)
}
/*
* Handlers for synchronization of the queues from/to the host.
* Netmap has two operating modes:
* - in the default mode, the rings connected to the host stack are
* just another ring pair managed by userspace;
* - in transparent mode (XXX to be defined) incoming packets
* (from the host or the NIC) are marked as NS_FORWARD upon
* arrival, and the user application has a chance to reset the
* flag for packets that should be dropped.
* On the RXSYNC or poll(), packets in RX rings between
* kring->nr_kcur and ring->cur with NS_FORWARD still set are moved
* to the other side.
* Handlers for synchronization of the rings from/to the host stack.
* These are associated to a network interface and are just another
* ring pair managed by userspace.
*
* Netmap also supports transparent forwarding (NS_FORWARD and NR_FORWARD
* flags):
*
* - Before releasing buffers on hw RX rings, the application can mark
* them with the NS_FORWARD flag. During the next RXSYNC or poll(), they
* will be forwarded to the host stack, similarly to what happened if
* the application moved them to the host TX ring.
*
* - Before releasing buffers on the host RX ring, the application can
* mark them with the NS_FORWARD flag. During the next RXSYNC or poll(),
* they will be forwarded to the hw TX rings, saving the application
* from doing the same task in user-space.
*
* Transparent fowarding can be enabled per-ring, by setting the NR_FORWARD
* flag, or globally with the netmap_fwd sysctl.
*
* The transfer NIC --> host is relatively easy, just encapsulate
* into mbufs and we are done. The host --> NIC side is slightly
* harder because there might not be room in the tx ring so it
@ -1054,8 +1074,9 @@ netmap_dtor(void *data)
/*
* pass a chain of buffers to the host stack as coming from 'dst'
* Pass a whole queue of mbufs to the host stack as coming from 'dst'
* We do not need to lock because the queue is private.
* After this call the queue is empty.
*/
static void
netmap_send_up(struct ifnet *dst, struct mbq *q)
@ -1063,7 +1084,8 @@ netmap_send_up(struct ifnet *dst, struct mbq *q)
struct mbuf *m;
struct mbuf *head = NULL, *prev = NULL;
/* send packets up, outside the lock */
/* Send packets up, outside the lock; head/prev machinery
* is only useful for Windows. */
while ((m = mbq_dequeue(q)) != NULL) {
if (netmap_verbose & NM_VERB_HOST)
D("sending up pkt %p size %d", m, MBUF_LEN(m));
@ -1078,9 +1100,9 @@ netmap_send_up(struct ifnet *dst, struct mbq *q)
/*
* put a copy of the buffers marked NS_FORWARD into an mbuf chain.
* Take packets from hwcur to ring->head marked NS_FORWARD (or forced)
* and pass them up. Drop remaining packets in the unlikely event
* Scan the buffers from hwcur to ring->head, and put a copy of those
* marked NS_FORWARD (or all of them if forced) into a queue of mbufs.
* Drop remaining packets in the unlikely event
* of an mbuf shortage.
*/
static void
@ -1127,16 +1149,24 @@ nm_may_forward_up(struct netmap_kring *kring)
}
static inline int
nm_may_forward_down(struct netmap_kring *kring)
nm_may_forward_down(struct netmap_kring *kring, int sync_flags)
{
return _nm_may_forward(kring) &&
(sync_flags & NAF_CAN_FORWARD_DOWN) &&
kring->ring_id == kring->na->num_rx_rings;
}
/*
* Send to the NIC rings packets marked NS_FORWARD between
* kring->nr_hwcur and kring->rhead
* Called under kring->rx_queue.lock on the sw rx ring,
* kring->nr_hwcur and kring->rhead.
* Called under kring->rx_queue.lock on the sw rx ring.
*
* It can only be called if the user opened all the TX hw rings,
* see NAF_CAN_FORWARD_DOWN flag.
* We can touch the TX netmap rings (slots, head and cur) since
* we are in poll/ioctl system call context, and the application
* is not supposed to touch the ring (using a different thread)
* during the execution of the system call.
*/
static u_int
netmap_sw_to_nic(struct netmap_adapter *na)
@ -1179,7 +1209,7 @@ netmap_sw_to_nic(struct netmap_adapter *na)
rdst->head = rdst->cur = nm_next(dst_head, dst_lim);
}
/* if (sent) XXX txsync ? */
/* if (sent) XXX txsync ? it would be just an optimization */
}
return sent;
}
@ -1200,9 +1230,7 @@ netmap_txsync_to_host(struct netmap_kring *kring, int flags)
struct mbq q;
/* Take packets from hwcur to head and pass them up.
* force head = cur since netmap_grab_packets() stops at head
* In case of no buffers we give up. At the end of the loop,
* the queue is drained in all cases.
* Force hwcur = head since netmap_grab_packets() stops at head
*/
mbq_init(&q);
netmap_grab_packets(kring, &q, 1 /* force */);
@ -1222,11 +1250,9 @@ netmap_txsync_to_host(struct netmap_kring *kring, int flags)
* They have been put in kring->rx_queue by netmap_transmit().
* We protect access to the kring using kring->rx_queue.lock
*
* This routine also does the selrecord if called from the poll handler
* (we know because sr != NULL).
*
* returns the number of packets delivered to tx queues in
* transparent mode, or a negative value if error
* also moves to the nic hw rings any packet the user has marked
* for transparent-mode forwarding, then sets the NR_FORWARD
* flag in the kring to let the caller push them out
*/
static int
netmap_rxsync_from_host(struct netmap_kring *kring, int flags)
@ -1250,7 +1276,7 @@ netmap_rxsync_from_host(struct netmap_kring *kring, int flags)
uint32_t stop_i;
nm_i = kring->nr_hwtail;
stop_i = nm_prev(nm_i, lim);
stop_i = nm_prev(kring->nr_hwcur, lim);
while ( nm_i != stop_i && (m = mbq_dequeue(q)) != NULL ) {
int len = MBUF_LEN(m);
struct netmap_slot *slot = &ring->slot[nm_i];
@ -1273,7 +1299,7 @@ netmap_rxsync_from_host(struct netmap_kring *kring, int flags)
*/
nm_i = kring->nr_hwcur;
if (nm_i != head) { /* something was released */
if (nm_may_forward_down(kring)) {
if (nm_may_forward_down(kring, flags)) {
ret = netmap_sw_to_nic(na);
if (ret > 0) {
kring->nr_kflags |= NR_FORWARD;
@ -1317,7 +1343,7 @@ netmap_rxsync_from_host(struct netmap_kring *kring, int flags)
*/
static void netmap_hw_dtor(struct netmap_adapter *); /* needed by NM_IS_NATIVE() */
int
netmap_get_hw_na(struct ifnet *ifp, struct netmap_adapter **na)
netmap_get_hw_na(struct ifnet *ifp, struct netmap_mem_d *nmd, struct netmap_adapter **na)
{
/* generic support */
int i = netmap_admode; /* Take a snapshot. */
@ -1348,7 +1374,7 @@ netmap_get_hw_na(struct ifnet *ifp, struct netmap_adapter **na)
#endif
) {
*na = prev_na;
return 0;
goto assign_mem;
}
}
@ -1377,10 +1403,17 @@ netmap_get_hw_na(struct ifnet *ifp, struct netmap_adapter **na)
return error;
*na = NA(ifp);
assign_mem:
if (nmd != NULL && !((*na)->na_flags & NAF_MEM_OWNER) &&
(*na)->active_fds == 0 && ((*na)->nm_mem != nmd)) {
netmap_mem_put((*na)->nm_mem);
(*na)->nm_mem = netmap_mem_get(nmd);
}
return 0;
}
/*
* MUST BE CALLED UNDER NMG_LOCK()
*
@ -1400,16 +1433,28 @@ netmap_get_hw_na(struct ifnet *ifp, struct netmap_adapter **na)
*/
int
netmap_get_na(struct nmreq *nmr, struct netmap_adapter **na,
struct ifnet **ifp, int create)
struct ifnet **ifp, struct netmap_mem_d *nmd, int create)
{
int error = 0;
struct netmap_adapter *ret = NULL;
int nmd_ref = 0;
*na = NULL; /* default return value */
*ifp = NULL;
NMG_LOCK_ASSERT();
/* if the request contain a memid, try to find the
* corresponding memory region
*/
if (nmd == NULL && nmr->nr_arg2) {
nmd = netmap_mem_find(nmr->nr_arg2);
if (nmd == NULL)
return EINVAL;
/* keep the rereference */
nmd_ref = 1;
}
/* We cascade through all possible types of netmap adapter.
* All netmap_get_*_na() functions return an error and an na,
* with the following combinations:
@ -1422,24 +1467,24 @@ netmap_get_na(struct nmreq *nmr, struct netmap_adapter **na,
*/
/* try to see if this is a ptnetmap port */
error = netmap_get_pt_host_na(nmr, na, create);
error = netmap_get_pt_host_na(nmr, na, nmd, create);
if (error || *na != NULL)
return error;
goto out;
/* try to see if this is a monitor port */
error = netmap_get_monitor_na(nmr, na, create);
error = netmap_get_monitor_na(nmr, na, nmd, create);
if (error || *na != NULL)
return error;
goto out;
/* try to see if this is a pipe port */
error = netmap_get_pipe_na(nmr, na, create);
error = netmap_get_pipe_na(nmr, na, nmd, create);
if (error || *na != NULL)
return error;
goto out;
/* try to see if this is a bridge port */
error = netmap_get_bdg_na(nmr, na, create);
error = netmap_get_bdg_na(nmr, na, nmd, create);
if (error)
return error;
goto out;
if (*na != NULL) /* valid match in netmap_get_bdg_na() */
goto out;
@ -1452,10 +1497,11 @@ netmap_get_na(struct nmreq *nmr, struct netmap_adapter **na,
*/
*ifp = ifunit_ref(nmr->nr_name);
if (*ifp == NULL) {
return ENXIO;
error = ENXIO;
goto out;
}
error = netmap_get_hw_na(*ifp, &ret);
error = netmap_get_hw_na(*ifp, nmd, &ret);
if (error)
goto out;
@ -1471,6 +1517,8 @@ netmap_get_na(struct nmreq *nmr, struct netmap_adapter **na,
*ifp = NULL;
}
}
if (nmd_ref)
netmap_mem_put(nmd);
return error;
}
@ -1712,7 +1760,8 @@ netmap_interp_ringid(struct netmap_priv_d *priv, uint16_t ringid, uint32_t flags
D("deprecated API, old ringid 0x%x -> ringid %x reg %d", ringid, i, reg);
}
if ((flags & NR_PTNETMAP_HOST) && (reg != NR_REG_ALL_NIC ||
if ((flags & NR_PTNETMAP_HOST) && ((reg != NR_REG_ALL_NIC &&
reg != NR_REG_PIPE_MASTER && reg != NR_REG_PIPE_SLAVE) ||
flags & (NR_RX_RINGS_ONLY|NR_TX_RINGS_ONLY))) {
D("Error: only NR_REG_ALL_NIC supported with netmap passthrough");
return EINVAL;
@ -1766,6 +1815,13 @@ netmap_interp_ringid(struct netmap_priv_d *priv, uint16_t ringid, uint32_t flags
}
priv->np_flags = (flags & ~NR_REG_MASK) | reg;
/* Allow transparent forwarding mode in the host --> nic
* direction only if all the TX hw rings have been opened. */
if (priv->np_qfirst[NR_TX] == 0 &&
priv->np_qlast[NR_TX] >= na->num_tx_rings) {
priv->np_sync_flags |= NAF_CAN_FORWARD_DOWN;
}
if (netmap_verbose) {
D("%s: tx [%d,%d) rx [%d,%d) id %d",
na->name,
@ -2029,7 +2085,7 @@ netmap_do_regif(struct netmap_priv_d *priv, struct netmap_adapter *na,
goto err_rel_excl;
/* in all cases, create a new netmap if */
nifp = netmap_mem_if_new(na);
nifp = netmap_mem_if_new(na, priv);
if (nifp == NULL) {
error = ENOMEM;
goto err_del_rings;
@ -2103,6 +2159,16 @@ nm_sync_finalize(struct netmap_kring *kring)
kring->rhead, kring->rcur, kring->rtail);
}
/* set ring timestamp */
static inline void
ring_timestamp_set(struct netmap_ring *ring)
{
if (netmap_no_timestamp == 0 || ring->flags & NR_TIMESTAMP) {
microtime(&ring->ts);
}
}
/*
* ioctl(2) support for the "netmap" device.
*
@ -2118,13 +2184,16 @@ nm_sync_finalize(struct netmap_kring *kring)
int
netmap_ioctl(struct netmap_priv_d *priv, u_long cmd, caddr_t data, struct thread *td)
{
struct mbq q; /* packets from RX hw queues to host stack */
struct nmreq *nmr = (struct nmreq *) data;
struct netmap_adapter *na = NULL;
struct netmap_mem_d *nmd = NULL;
struct ifnet *ifp = NULL;
int error = 0;
u_int i, qfirst, qlast;
struct netmap_if *nifp;
struct netmap_kring *krings;
int sync_flags;
enum txrx t;
if (cmd == NIOCGINFO || cmd == NIOCREGIF) {
@ -2152,19 +2221,24 @@ netmap_ioctl(struct netmap_priv_d *priv, u_long cmd, caddr_t data, struct thread
NMG_LOCK();
do {
/* memsize is always valid */
struct netmap_mem_d *nmd = &nm_mem;
u_int memflags;
if (nmr->nr_name[0] != '\0') {
/* get a refcount */
error = netmap_get_na(nmr, &na, &ifp, 1 /* create */);
error = netmap_get_na(nmr, &na, &ifp, NULL, 1 /* create */);
if (error) {
na = NULL;
ifp = NULL;
break;
}
nmd = na->nm_mem; /* get memory allocator */
} else {
nmd = netmap_mem_find(nmr->nr_arg2 ? nmr->nr_arg2 : 1);
if (nmd == NULL) {
error = EINVAL;
break;
}
}
error = netmap_mem_get_info(nmd, &nmr->nr_memsize, &memflags,
@ -2210,7 +2284,7 @@ netmap_ioctl(struct netmap_priv_d *priv, u_long cmd, caddr_t data, struct thread
struct ifnet *ifp;
NMG_LOCK();
error = netmap_get_na(nmr, &na, &ifp, 0);
error = netmap_get_na(nmr, &na, &ifp, NULL, 0);
if (na && !error) {
nmr->nr_arg1 = na->virt_hdr_len;
}
@ -2219,7 +2293,14 @@ netmap_ioctl(struct netmap_priv_d *priv, u_long cmd, caddr_t data, struct thread
break;
} else if (i == NETMAP_POOLS_INFO_GET) {
/* get information from the memory allocator */
error = netmap_mem_pools_info_get(nmr, priv->np_na);
NMG_LOCK();
if (priv->np_na && priv->np_na->nm_mem) {
struct netmap_mem_d *nmd = priv->np_na->nm_mem;
error = netmap_mem_pools_info_get(nmr, nmd);
} else {
error = EINVAL;
}
NMG_UNLOCK();
break;
} else if (i != 0) {
D("nr_cmd must be 0 not %d", i);
@ -2237,26 +2318,32 @@ netmap_ioctl(struct netmap_priv_d *priv, u_long cmd, caddr_t data, struct thread
error = EBUSY;
break;
}
if (nmr->nr_arg2) {
/* find the allocator and get a reference */
nmd = netmap_mem_find(nmr->nr_arg2);
if (nmd == NULL) {
error = EINVAL;
break;
}
}
/* find the interface and a reference */
error = netmap_get_na(nmr, &na, &ifp,
error = netmap_get_na(nmr, &na, &ifp, nmd,
1 /* create */); /* keep reference */
if (error)
break;
if (NETMAP_OWNED_BY_KERN(na)) {
netmap_unget_na(na, ifp);
error = EBUSY;
break;
}
if (na->virt_hdr_len && !(nmr->nr_flags & NR_ACCEPT_VNET_HDR)) {
netmap_unget_na(na, ifp);
error = EIO;
break;
}
error = netmap_do_regif(priv, na, nmr->nr_ringid, nmr->nr_flags);
if (error) { /* reg. failed, release priv and ref */
netmap_unget_na(na, ifp);
break;
}
nifp = priv->np_nifp;
@ -2271,7 +2358,6 @@ netmap_ioctl(struct netmap_priv_d *priv, u_long cmd, caddr_t data, struct thread
&nmr->nr_arg2);
if (error) {
netmap_do_unregif(priv);
netmap_unget_na(na, ifp);
break;
}
if (memflags & NETMAP_MEM_PRIVATE) {
@ -2295,6 +2381,14 @@ netmap_ioctl(struct netmap_priv_d *priv, u_long cmd, caddr_t data, struct thread
/* store ifp reference so that priv destructor may release it */
priv->np_ifp = ifp;
} while (0);
if (error) {
netmap_unget_na(na, ifp);
}
/* release the reference from netmap_mem_find() or
* netmap_mem_ext_create()
*/
if (nmd)
netmap_mem_put(nmd);
NMG_UNLOCK();
break;
@ -2316,10 +2410,12 @@ netmap_ioctl(struct netmap_priv_d *priv, u_long cmd, caddr_t data, struct thread
break;
}
mbq_init(&q);
t = (cmd == NIOCTXSYNC ? NR_TX : NR_RX);
krings = NMR(na, t);
qfirst = priv->np_qfirst[t];
qlast = priv->np_qlast[t];
sync_flags = priv->np_sync_flags;
for (i = qfirst; i < qlast; i++) {
struct netmap_kring *kring = krings + i;
@ -2337,7 +2433,7 @@ netmap_ioctl(struct netmap_priv_d *priv, u_long cmd, caddr_t data, struct thread
kring->nr_hwcur);
if (nm_txsync_prologue(kring, ring) >= kring->nkr_num_slots) {
netmap_ring_reinit(kring);
} else if (kring->nm_sync(kring, NAF_FORCE_RECLAIM) == 0) {
} else if (kring->nm_sync(kring, sync_flags | NAF_FORCE_RECLAIM) == 0) {
nm_sync_finalize(kring);
}
if (netmap_verbose & NM_VERB_TXSYNC)
@ -2347,14 +2443,23 @@ netmap_ioctl(struct netmap_priv_d *priv, u_long cmd, caddr_t data, struct thread
} else {
if (nm_rxsync_prologue(kring, ring) >= kring->nkr_num_slots) {
netmap_ring_reinit(kring);
} else if (kring->nm_sync(kring, NAF_FORCE_READ) == 0) {
}
if (nm_may_forward_up(kring)) {
/* transparent forwarding, see netmap_poll() */
netmap_grab_packets(kring, &q, netmap_fwd);
}
if (kring->nm_sync(kring, sync_flags | NAF_FORCE_READ) == 0) {
nm_sync_finalize(kring);
}
microtime(&ring->ts);
ring_timestamp_set(ring);
}
nm_kr_put(kring);
}
if (mbq_peek(&q)) {
netmap_send_up(na->ifp, &q);
}
break;
#ifdef WITH_VALE
@ -2425,7 +2530,7 @@ netmap_poll(struct netmap_priv_d *priv, int events, NM_SELRECORD_T *sr)
u_int i, check_all_tx, check_all_rx, want[NR_TXRX], revents = 0;
#define want_tx want[NR_TX]
#define want_rx want[NR_RX]
struct mbq q; /* packets from hw queues to host stack */
struct mbq q; /* packets from RX hw queues to host stack */
enum txrx t;
/*
@ -2435,11 +2540,14 @@ netmap_poll(struct netmap_priv_d *priv, int events, NM_SELRECORD_T *sr)
*/
int retry_tx = 1, retry_rx = 1;
/* transparent mode: send_down is 1 if we have found some
* packets to forward during the rx scan and we have not
* sent them down to the nic yet
/* Transparent mode: send_down is 1 if we have found some
* packets to forward (host RX ring --> NIC) during the rx
* scan and we have not sent them down to the NIC yet.
* Transparent mode requires to bind all rings to a single
* file descriptor.
*/
int send_down = 0;
int sync_flags = priv->np_sync_flags;
mbq_init(&q);
@ -2549,7 +2657,7 @@ netmap_poll(struct netmap_priv_d *priv, int events, NM_SELRECORD_T *sr)
netmap_ring_reinit(kring);
revents |= POLLERR;
} else {
if (kring->nm_sync(kring, 0))
if (kring->nm_sync(kring, sync_flags))
revents |= POLLERR;
else
nm_sync_finalize(kring);
@ -2602,25 +2710,23 @@ netmap_poll(struct netmap_priv_d *priv, int events, NM_SELRECORD_T *sr)
/* now we can use kring->rcur, rtail */
/*
* transparent mode support: collect packets
* from the rxring(s).
* transparent mode support: collect packets from
* hw rxring(s) that have been released by the user
*/
if (nm_may_forward_up(kring)) {
ND(10, "forwarding some buffers up %d to %d",
kring->nr_hwcur, ring->cur);
netmap_grab_packets(kring, &q, netmap_fwd);
}
/* Clear the NR_FORWARD flag anyway, it may be set by
* the nm_sync() below only on for the host RX ring (see
* netmap_rxsync_from_host()). */
kring->nr_kflags &= ~NR_FORWARD;
if (kring->nm_sync(kring, 0))
if (kring->nm_sync(kring, sync_flags))
revents |= POLLERR;
else
nm_sync_finalize(kring);
send_down |= (kring->nr_kflags & NR_FORWARD); /* host ring only */
if (netmap_no_timestamp == 0 ||
ring->flags & NR_TIMESTAMP) {
microtime(&ring->ts);
}
send_down |= (kring->nr_kflags & NR_FORWARD);
ring_timestamp_set(ring);
found = kring->rcur != kring->rtail;
nm_kr_put(kring);
if (found) {
@ -2634,7 +2740,7 @@ netmap_poll(struct netmap_priv_d *priv, int events, NM_SELRECORD_T *sr)
nm_os_selrecord(sr, check_all_rx ?
&na->si[NR_RX] : &na->rx_rings[priv->np_qfirst[NR_RX]].si);
}
if (send_down > 0 || retry_rx) {
if (send_down || retry_rx) {
retry_rx = 0;
if (send_down)
goto flush_tx; /* and retry_rx */
@ -2644,17 +2750,13 @@ netmap_poll(struct netmap_priv_d *priv, int events, NM_SELRECORD_T *sr)
}
/*
* Transparent mode: marked bufs on rx rings between
* kring->nr_hwcur and ring->head
* are passed to the other endpoint.
*
* Transparent mode requires to bind all
* rings to a single file descriptor.
* Transparent mode: released bufs (i.e. between kring->nr_hwcur and
* ring->head) marked with NS_FORWARD on hw rx rings are passed up
* to the host stack.
*/
if (q.head && !nm_kr_tryget(&na->tx_rings[na->num_tx_rings], 1, &revents)) {
if (mbq_peek(&q)) {
netmap_send_up(na->ifp, &q);
nm_kr_put(&na->tx_rings[na->num_tx_rings]);
}
return (revents);
@ -2683,22 +2785,6 @@ netmap_notify(struct netmap_kring *kring, int flags)
return NM_IRQ_COMPLETED;
}
#if 0
static int
netmap_notify(struct netmap_adapter *na, u_int n_ring,
enum txrx tx, int flags)
{
if (tx == NR_TX) {
KeSetEvent(notes->TX_EVENT, 0, FALSE);
}
else
{
KeSetEvent(notes->RX_EVENT, 0, FALSE);
}
return 0;
}
#endif
/* called by all routines that create netmap_adapters.
* provide some defaults and get a reference to the
* memory allocator
@ -2729,10 +2815,10 @@ netmap_attach_common(struct netmap_adapter *na)
na->nm_notify = netmap_notify;
na->active_fds = 0;
if (na->nm_mem == NULL)
if (na->nm_mem == NULL) {
/* use the global allocator */
na->nm_mem = &nm_mem;
netmap_mem_get(na->nm_mem);
na->nm_mem = netmap_mem_get(&nm_mem);
}
#ifdef WITH_VALE
if (na->nm_bdg_attach == NULL)
/* no special nm_bdg_attach callback. On VALE
@ -2757,7 +2843,7 @@ netmap_detach_common(struct netmap_adapter *na)
if (na->nm_mem)
netmap_mem_put(na->nm_mem);
bzero(na, sizeof(*na));
free(na, M_DEVBUF);
nm_os_free(na);
}
/* Wrapper for the register callback provided netmap-enabled
@ -2804,26 +2890,28 @@ netmap_hw_dtor(struct netmap_adapter *na)
/*
* Allocate a ``netmap_adapter`` object, and initialize it from the
* Allocate a netmap_adapter object, and initialize it from the
* 'arg' passed by the driver on attach.
* We allocate a block of memory with room for a struct netmap_adapter
* plus two sets of N+2 struct netmap_kring (where N is the number
* of hardware rings):
* krings 0..N-1 are for the hardware queues.
* kring N is for the host stack queue
* kring N+1 is only used for the selinfo for all queues. // XXX still true ?
* We allocate a block of memory of 'size' bytes, which has room
* for struct netmap_adapter plus additional room private to
* the caller.
* Return 0 on success, ENOMEM otherwise.
*/
static int
_netmap_attach(struct netmap_adapter *arg, size_t size)
int
netmap_attach_ext(struct netmap_adapter *arg, size_t size)
{
struct netmap_hw_adapter *hwna = NULL;
struct ifnet *ifp = NULL;
if (size < sizeof(struct netmap_hw_adapter)) {
D("Invalid netmap adapter size %d", (int)size);
return EINVAL;
}
if (arg == NULL || arg->ifp == NULL)
goto fail;
ifp = arg->ifp;
hwna = malloc(size, M_DEVBUF, M_NOWAIT | M_ZERO);
hwna = nm_os_malloc(size);
if (hwna == NULL)
goto fail;
hwna->up = *arg;
@ -2832,7 +2920,7 @@ _netmap_attach(struct netmap_adapter *arg, size_t size)
hwna->nm_hw_register = hwna->up.nm_register;
hwna->up.nm_register = netmap_hw_reg;
if (netmap_attach_common(&hwna->up)) {
free(hwna, M_DEVBUF);
nm_os_free(hwna);
goto fail;
}
netmap_adapter_get(&hwna->up);
@ -2878,48 +2966,10 @@ _netmap_attach(struct netmap_adapter *arg, size_t size)
int
netmap_attach(struct netmap_adapter *arg)
{
return _netmap_attach(arg, sizeof(struct netmap_hw_adapter));
return netmap_attach_ext(arg, sizeof(struct netmap_hw_adapter));
}
#ifdef WITH_PTNETMAP_GUEST
int
netmap_pt_guest_attach(struct netmap_adapter *arg, void *csb,
unsigned int nifp_offset, unsigned int memid)
{
struct netmap_pt_guest_adapter *ptna;
struct ifnet *ifp = arg ? arg->ifp : NULL;
int error;
/* get allocator */
arg->nm_mem = netmap_mem_pt_guest_new(ifp, nifp_offset, memid);
if (arg->nm_mem == NULL)
return ENOMEM;
arg->na_flags |= NAF_MEM_OWNER;
error = _netmap_attach(arg, sizeof(struct netmap_pt_guest_adapter));
if (error)
return error;
/* get the netmap_pt_guest_adapter */
ptna = (struct netmap_pt_guest_adapter *) NA(ifp);
ptna->csb = csb;
/* Initialize a separate pass-through netmap adapter that is going to
* be used by the ptnet driver only, and so never exposed to netmap
* applications. We only need a subset of the available fields. */
memset(&ptna->dr, 0, sizeof(ptna->dr));
ptna->dr.up.ifp = ifp;
ptna->dr.up.nm_mem = ptna->hwup.up.nm_mem;
netmap_mem_get(ptna->dr.up.nm_mem);
ptna->dr.up.nm_config = ptna->hwup.up.nm_config;
ptna->backend_regifs = 0;
return 0;
}
#endif /* WITH_PTNETMAP_GUEST */
void
NM_DBG(netmap_adapter_get)(struct netmap_adapter *na)
{
@ -3019,7 +3069,7 @@ netmap_transmit(struct ifnet *ifp, struct mbuf *m)
u_int error = ENOBUFS;
unsigned int txr;
struct mbq *q;
int space;
int busy;
kring = &na->rx_rings[na->num_rx_rings];
// XXX [Linux] we do not need this lock
@ -3052,28 +3102,27 @@ netmap_transmit(struct ifnet *ifp, struct mbuf *m)
}
if (nm_os_mbuf_has_offld(m)) {
RD(1, "%s drop mbuf requiring offloadings", na->name);
RD(1, "%s drop mbuf that needs offloadings", na->name);
goto done;
}
/* protect against rxsync_from_host(), netmap_sw_to_nic()
/* protect against netmap_rxsync_from_host(), netmap_sw_to_nic()
* and maybe other instances of netmap_transmit (the latter
* not possible on Linux).
* Also avoid overflowing the queue.
* We enqueue the mbuf only if we are sure there is going to be
* enough room in the host RX ring, otherwise we drop it.
*/
mbq_lock(q);
space = kring->nr_hwtail - kring->nr_hwcur;
if (space < 0)
space += kring->nkr_num_slots;
if (space + mbq_len(q) >= kring->nkr_num_slots - 1) { // XXX
RD(10, "%s full hwcur %d hwtail %d qlen %d len %d m %p",
na->name, kring->nr_hwcur, kring->nr_hwtail, mbq_len(q),
len, m);
busy = kring->nr_hwtail - kring->nr_hwcur;
if (busy < 0)
busy += kring->nkr_num_slots;
if (busy + mbq_len(q) >= kring->nkr_num_slots - 1) {
RD(2, "%s full hwcur %d hwtail %d qlen %d", na->name,
kring->nr_hwcur, kring->nr_hwtail, mbq_len(q));
} else {
mbq_enqueue(q, m);
ND(10, "%s %d bufs in queue len %d m %p",
na->name, mbq_len(q), len, m);
ND(2, "%s %d bufs in queue", na->name, mbq_len(q));
/* notify outside the lock */
m = NULL;
error = 0;
@ -3293,7 +3342,7 @@ netmap_fini(void)
netmap_uninit_bridges();
netmap_mem_fini();
NMG_LOCK_DESTROY();
printf("netmap: unloaded module.\n");
nm_prinf("netmap: unloaded module.\n");
}
@ -3330,7 +3379,7 @@ netmap_init(void)
if (error)
goto fail;
printf("netmap: loaded module\n");
nm_prinf("netmap: loaded module\n");
return (0);
fail:
netmap_fini();

91
sys/dev/netmap/netmap_freebsd.c
View File

@ -89,6 +89,24 @@ nm_os_selinfo_uninit(NM_SELINFO_T *si)
mtx_destroy(&si->m);
}
void *
nm_os_malloc(size_t size)
{
return malloc(size, M_DEVBUF, M_NOWAIT | M_ZERO);
}
void *
nm_os_realloc(void *addr, size_t new_size, size_t old_size __unused)
{
return realloc(addr, new_size, M_DEVBUF, M_NOWAIT | M_ZERO);
}
void
nm_os_free(void *addr)
{
free(addr, M_DEVBUF);
}
void
nm_os_ifnet_lock(void)
{
@ -235,7 +253,6 @@ nm_os_csum_tcpudp_ipv6(struct nm_ipv6hdr *ip6h, void *data,
void *
nm_os_send_up(struct ifnet *ifp, struct mbuf *m, struct mbuf *prev)
{
NA(ifp)->if_input(ifp, m);
return NULL;
}
@ -251,11 +268,17 @@ nm_os_mbuf_has_offld(struct mbuf *m)
static void
freebsd_generic_rx_handler(struct ifnet *ifp, struct mbuf *m)
{
struct netmap_generic_adapter *gna =
(struct netmap_generic_adapter *)NA(ifp);
int stolen = generic_rx_handler(ifp, m);
int stolen;
if (!NM_NA_VALID(ifp)) {
RD(1, "Warning: got RX packet for invalid emulated adapter");
return;
}
stolen = generic_rx_handler(ifp, m);
if (!stolen) {
struct netmap_generic_adapter *gna =
(struct netmap_generic_adapter *)NA(ifp);
gna->save_if_input(ifp, m);
}
}
@ -386,7 +409,6 @@ netmap_getna(if_t ifp)
int
nm_os_generic_find_num_desc(struct ifnet *ifp, unsigned int *tx, unsigned int *rx)
{
D("called, in tx %d rx %d", *tx, *rx);
return 0;
}
@ -394,9 +416,10 @@ nm_os_generic_find_num_desc(struct ifnet *ifp, unsigned int *tx, unsigned int *r
void
nm_os_generic_find_num_queues(struct ifnet *ifp, u_int *txq, u_int *rxq)
{
D("called, in txq %d rxq %d", *txq, *rxq);
*txq = netmap_generic_rings;
*rxq = netmap_generic_rings;
unsigned num_rings = netmap_generic_rings ? netmap_generic_rings : 1;
*txq = num_rings;
*rxq = num_rings;
}
void
@ -648,7 +671,7 @@ nm_os_pt_memdev_iomap(struct ptnetmap_memdev *ptn_dev, vm_paddr_t *nm_paddr,
&rid, 0, ~0, *mem_size, RF_ACTIVE);
if (ptn_dev->pci_mem == NULL) {
*nm_paddr = 0;
*nm_addr = NULL;
*nm_addr = 0;
return ENOMEM;
}
@ -985,32 +1008,32 @@ nm_os_ncpus(void)
return mp_maxid + 1;
}
struct nm_kthread_ctx {
struct nm_kctx_ctx {
struct thread *user_td; /* thread user-space (kthread creator) to send ioctl */
struct ptnetmap_cfgentry_bhyve cfg;
/* worker function and parameter */
nm_kthread_worker_fn_t worker_fn;
nm_kctx_worker_fn_t worker_fn;
void *worker_private;
struct nm_kthread *nmk;
struct nm_kctx *nmk;
/* integer to manage multiple worker contexts (e.g., RX or TX on ptnetmap) */
long type;
};
struct nm_kthread {
struct nm_kctx {
struct thread *worker;
struct mtx worker_lock;
uint64_t scheduled; /* pending wake_up request */
struct nm_kthread_ctx worker_ctx;
struct nm_kctx_ctx worker_ctx;
int run; /* used to stop kthread */
int attach_user; /* kthread attached to user_process */
int affinity;
};
void inline
nm_os_kthread_wakeup_worker(struct nm_kthread *nmk)
nm_os_kctx_worker_wakeup(struct nm_kctx *nmk)
{
/*
* There may be a race between FE and BE,
@ -1030,9 +1053,9 @@ nm_os_kthread_wakeup_worker(struct nm_kthread *nmk)
}
void inline
nm_os_kthread_send_irq(struct nm_kthread *nmk)
nm_os_kctx_send_irq(struct nm_kctx *nmk)
{
struct nm_kthread_ctx *ctx = &nmk->worker_ctx;
struct nm_kctx_ctx *ctx = &nmk->worker_ctx;
int err;
if (ctx->user_td && ctx->cfg.ioctl_fd > 0) {
@ -1047,10 +1070,10 @@ nm_os_kthread_send_irq(struct nm_kthread *nmk)
}
static void
nm_kthread_worker(void *data)
nm_kctx_worker(void *data)
{
struct nm_kthread *nmk = data;
struct nm_kthread_ctx *ctx = &nmk->worker_ctx;
struct nm_kctx *nmk = data;
struct nm_kctx_ctx *ctx = &nmk->worker_ctx;
uint64_t old_scheduled = nmk->scheduled;
if (nmk->affinity >= 0) {
@ -1077,7 +1100,7 @@ nm_kthread_worker(void *data)
* mechanism and we continually execute worker_fn()
*/
if (!ctx->cfg.wchan) {
ctx->worker_fn(ctx->worker_private); /* worker body */
ctx->worker_fn(ctx->worker_private, 1); /* worker body */
} else {
/* checks if there is a pending notification */
mtx_lock(&nmk->worker_lock);
@ -1085,13 +1108,13 @@ nm_kthread_worker(void *data)
old_scheduled = nmk->scheduled;
mtx_unlock(&nmk->worker_lock);
ctx->worker_fn(ctx->worker_private); /* worker body */
ctx->worker_fn(ctx->worker_private, 1); /* worker body */
continue;
} else if (nmk->run) {
/* wait on event with one second timeout */
msleep((void *)(uintptr_t)ctx->cfg.wchan,
&nmk->worker_lock, 0, "nmk_ev", hz);
msleep((void *)(uintptr_t)ctx->cfg.wchan, &nmk->worker_lock,
0, "nmk_ev", hz);
nmk->scheduled++;
}
mtx_unlock(&nmk->worker_lock);
@ -1102,16 +1125,16 @@ nm_kthread_worker(void *data)
}
void
nm_os_kthread_set_affinity(struct nm_kthread *nmk, int affinity)
nm_os_kctx_worker_setaff(struct nm_kctx *nmk, int affinity)
{
nmk->affinity = affinity;
}
struct nm_kthread *
nm_os_kthread_create(struct nm_kthread_cfg *cfg, unsigned int cfgtype,
struct nm_kctx *
nm_os_kctx_create(struct nm_kctx_cfg *cfg, unsigned int cfgtype,
void *opaque)
{
struct nm_kthread *nmk = NULL;
struct nm_kctx *nmk = NULL;
if (cfgtype != PTNETMAP_CFGTYPE_BHYVE) {
D("Unsupported cfgtype %u", cfgtype);
@ -1140,7 +1163,7 @@ nm_os_kthread_create(struct nm_kthread_cfg *cfg, unsigned int cfgtype,
}
int
nm_os_kthread_start(struct nm_kthread *nmk)
nm_os_kctx_worker_start(struct nm_kctx *nmk)
{
struct proc *p = NULL;
int error = 0;
@ -1158,7 +1181,7 @@ nm_os_kthread_start(struct nm_kthread *nmk)
/* enable kthread main loop */
nmk->run = 1;
/* create kthread */
if((error = kthread_add(nm_kthread_worker, nmk, p,
if((error = kthread_add(nm_kctx_worker, nmk, p,
&nmk->worker, RFNOWAIT /* to be checked */, 0, "nm-kthread-%ld",
nmk->worker_ctx.type))) {
goto err;
@ -1174,7 +1197,7 @@ nm_os_kthread_start(struct nm_kthread *nmk)
}
void
nm_os_kthread_stop(struct nm_kthread *nmk)
nm_os_kctx_worker_stop(struct nm_kctx *nmk)
{
if (!nmk->worker) {
return;
@ -1184,18 +1207,18 @@ nm_os_kthread_stop(struct nm_kthread *nmk)
/* wake up kthread if it sleeps */
kthread_resume(nmk->worker);
nm_os_kthread_wakeup_worker(nmk);
nm_os_kctx_worker_wakeup(nmk);
nmk->worker = NULL;
}
void
nm_os_kthread_delete(struct nm_kthread *nmk)
nm_os_kctx_destroy(struct nm_kctx *nmk)
{
if (!nmk)
return;
if (nmk->worker) {
nm_os_kthread_stop(nmk);
nm_os_kctx_worker_stop(nmk);
}
memset(&nmk->worker_ctx.cfg, 0, sizeof(nmk->worker_ctx.cfg));

69
sys/dev/netmap/netmap_generic.c
View File

@ -109,13 +109,10 @@ __FBSDID("$FreeBSD$");
* chain into uma_zfree(zone_pack, mf)
* (or reinstall the buffer ?)
*/
static inline void
set_mbuf_destructor(struct mbuf *m, void *fn)
{
m->m_ext.ext_free = fn;
m->m_ext.ext_type = EXT_EXTREF;
}
#define SET_MBUF_DESTRUCTOR(m, fn) do { \
(m)->m_ext.ext_free = (void *)fn; \
(m)->m_ext.ext_type = EXT_EXTREF; \
} while (0)
static int
void_mbuf_dtor(struct mbuf *m, void *arg1, void *arg2)
@ -170,12 +167,10 @@ nm_os_get_mbuf(struct ifnet *ifp, int len)
static void void_mbuf_dtor(struct mbuf *m, void *arg1, void *arg2) { }
static inline void
set_mbuf_destructor(struct mbuf *m, void *fn)
{
m->m_ext.ext_free = (fn != NULL) ? fn : (void *)void_mbuf_dtor;
}
#define SET_MBUF_DESTRUCTOR(m, fn) do { \
(m)->m_ext.ext_free = (fn != NULL) ? \
(void *)fn : (void *)void_mbuf_dtor; \
} while (0)
static inline struct mbuf *
nm_os_get_mbuf(struct ifnet *ifp, int len)
@ -311,7 +306,7 @@ void generic_rate(int txp, int txs, int txi, int rxp, int rxs, int rxi)
#endif /* !RATE */
/* =============== GENERIC NETMAP ADAPTER SUPPORT ================= */
/* ========== GENERIC (EMULATED) NETMAP ADAPTER SUPPORT ============= */
/*
* Wrapper used by the generic adapter layer to notify
@ -341,7 +336,6 @@ generic_netmap_unregister(struct netmap_adapter *na)
int i, r;
if (na->active_fds == 0) {
D("Generic adapter %p goes off", na);
rtnl_lock();
na->na_flags &= ~NAF_NETMAP_ON;
@ -357,14 +351,14 @@ generic_netmap_unregister(struct netmap_adapter *na)
for_each_rx_kring_h(r, kring, na) {
if (nm_kring_pending_off(kring)) {
D("RX ring %d of generic adapter %p goes off", r, na);
D("Emulated adapter: ring '%s' deactivated", kring->name);
kring->nr_mode = NKR_NETMAP_OFF;
}
}
for_each_tx_kring_h(r, kring, na) {
if (nm_kring_pending_off(kring)) {
kring->nr_mode = NKR_NETMAP_OFF;
D("TX ring %d of generic adapter %p goes off", r, na);
D("Emulated adapter: ring '%s' deactivated", kring->name);
}
}
@ -387,14 +381,14 @@ generic_netmap_unregister(struct netmap_adapter *na)
* TX event is consumed. */
mtx_lock_spin(&kring->tx_event_lock);
if (kring->tx_event) {
set_mbuf_destructor(kring->tx_event, NULL);
SET_MBUF_DESTRUCTOR(kring->tx_event, NULL);
}
kring->tx_event = NULL;
mtx_unlock_spin(&kring->tx_event_lock);
}
if (na->active_fds == 0) {
free(gna->mit, M_DEVBUF);
nm_os_free(gna->mit);
for_each_rx_kring(r, kring, na) {
mbq_safe_fini(&kring->rx_queue);
@ -411,7 +405,7 @@ generic_netmap_unregister(struct netmap_adapter *na)
m_freem(kring->tx_pool[i]);
}
}
free(kring->tx_pool, M_DEVBUF);
nm_os_free(kring->tx_pool);
kring->tx_pool = NULL;
}
@ -421,6 +415,7 @@ generic_netmap_unregister(struct netmap_adapter *na)
del_timer(&rate_ctx.timer);
}
#endif
D("Emulated adapter for %s deactivated", na->name);
}
return 0;
@ -445,13 +440,12 @@ generic_netmap_register(struct netmap_adapter *na, int enable)
}
if (na->active_fds == 0) {
D("Generic adapter %p goes on", na);
D("Emulated adapter for %s activated", na->name);
/* Do all memory allocations when (na->active_fds == 0), to
* simplify error management. */
/* Allocate memory for mitigation support on all the rx queues. */
gna->mit = malloc(na->num_rx_rings * sizeof(struct nm_generic_mit),
M_DEVBUF, M_NOWAIT | M_ZERO);
gna->mit = nm_os_malloc(na->num_rx_rings * sizeof(struct nm_generic_mit));
if (!gna->mit) {
D("mitigation allocation failed");
error = ENOMEM;
@ -478,8 +472,7 @@ generic_netmap_register(struct netmap_adapter *na, int enable)
}
for_each_tx_kring(r, kring, na) {
kring->tx_pool =
malloc(na->num_tx_desc * sizeof(struct mbuf *),
M_DEVBUF, M_NOWAIT | M_ZERO);
nm_os_malloc(na->num_tx_desc * sizeof(struct mbuf *));
if (!kring->tx_pool) {
D("tx_pool allocation failed");
error = ENOMEM;
@ -492,14 +485,14 @@ generic_netmap_register(struct netmap_adapter *na, int enable)
for_each_rx_kring_h(r, kring, na) {
if (nm_kring_pending_on(kring)) {
D("RX ring %d of generic adapter %p goes on", r, na);
D("Emulated adapter: ring '%s' activated", kring->name);
kring->nr_mode = NKR_NETMAP_ON;
}
}
for_each_tx_kring_h(r, kring, na) {
if (nm_kring_pending_on(kring)) {
D("TX ring %d of generic adapter %p goes on", r, na);
D("Emulated adapter: ring '%s' activated", kring->name);
kring->nr_mode = NKR_NETMAP_ON;
}
}
@ -560,13 +553,13 @@ generic_netmap_register(struct netmap_adapter *na, int enable)
if (kring->tx_pool == NULL) {
continue;
}
free(kring->tx_pool, M_DEVBUF);
nm_os_free(kring->tx_pool);
kring->tx_pool = NULL;
}
for_each_rx_kring(r, kring, na) {
mbq_safe_fini(&kring->rx_queue);
}
free(gna->mit, M_DEVBUF);
nm_os_free(gna->mit);
out:
return error;
@ -768,7 +761,7 @@ generic_set_tx_event(struct netmap_kring *kring, u_int hwcur)
return;
}
set_mbuf_destructor(m, generic_mbuf_destructor);
SET_MBUF_DESTRUCTOR(m, generic_mbuf_destructor);
kring->tx_event = m;
mtx_unlock_spin(&kring->tx_event_lock);
@ -1161,7 +1154,6 @@ generic_netmap_dtor(struct netmap_adapter *na)
struct netmap_adapter *prev_na = gna->prev;
if (prev_na != NULL) {
D("Released generic NA %p", gna);
netmap_adapter_put(prev_na);
if (nm_iszombie(na)) {
/*
@ -1170,6 +1162,7 @@ generic_netmap_dtor(struct netmap_adapter *na)
*/
netmap_adapter_put(prev_na);
}
D("Native netmap adapter %p restored", prev_na);
}
NM_ATTACH_NA(ifp, prev_na);
/*
@ -1177,7 +1170,13 @@ generic_netmap_dtor(struct netmap_adapter *na)
* overrides WNA(ifp) if na->ifp is not NULL.
*/
na->ifp = NULL;
D("Restored native NA %p", prev_na);
D("Emulated netmap adapter for %s destroyed", na->name);
}
int
na_is_generic(struct netmap_adapter *na)
{
return na->nm_register == generic_netmap_register;
}
/*
@ -1208,7 +1207,7 @@ generic_netmap_attach(struct ifnet *ifp)
return EINVAL;
}
gna = malloc(sizeof(*gna), M_DEVBUF, M_NOWAIT | M_ZERO);
gna = nm_os_malloc(sizeof(*gna));
if (gna == NULL) {
D("no memory on attach, give up");
return ENOMEM;
@ -1237,7 +1236,7 @@ generic_netmap_attach(struct ifnet *ifp)
retval = netmap_attach_common(na);
if (retval) {
free(gna, M_DEVBUF);
nm_os_free(gna);
return retval;
}
@ -1249,7 +1248,7 @@ generic_netmap_attach(struct ifnet *ifp)
nm_os_generic_set_features(gna);
D("Created generic NA %p (prev %p)", gna, gna->prev);
D("Emulated adapter for %s created (prev was %p)", na->name, gna->prev);
return retval;
}

117
sys/dev/netmap/netmap_kern.h
View File

@ -55,6 +55,9 @@
#if defined(CONFIG_NETMAP_PTNETMAP_HOST)
#define WITH_PTNETMAP_HOST
#endif
#if defined(CONFIG_NETMAP_SINK)
#define WITH_SINK
#endif
#elif defined (_WIN32)
#define WITH_VALE // comment out to disable VALE support
@ -240,12 +243,23 @@ typedef struct hrtimer{
#define NMG_UNLOCK() NM_MTX_UNLOCK(netmap_global_lock)
#define NMG_LOCK_ASSERT() NM_MTX_ASSERT(netmap_global_lock)
#if defined(__FreeBSD__)
#define nm_prerr printf
#define nm_prinf printf
#elif defined (_WIN32)
#define nm_prerr DbgPrint
#define nm_prinf DbgPrint
#elif defined(linux)
#define nm_prerr(fmt, arg...) printk(KERN_ERR fmt, ##arg)
#define nm_prinf(fmt, arg...) printk(KERN_INFO fmt, ##arg)
#endif
#define ND(format, ...)
#define D(format, ...) \
do { \
struct timeval __xxts; \
microtime(&__xxts); \
printf("%03d.%06d [%4d] %-25s " format "\n", \
nm_prerr("%03d.%06d [%4d] %-25s " format "\n", \
(int)__xxts.tv_sec % 1000, (int)__xxts.tv_usec, \
__LINE__, __FUNCTION__, ##__VA_ARGS__); \
} while (0)
@ -287,6 +301,11 @@ void nm_os_put_module(void);
void netmap_make_zombie(struct ifnet *);
void netmap_undo_zombie(struct ifnet *);
/* os independent alloc/realloc/free */
void *nm_os_malloc(size_t);
void *nm_os_realloc(void *, size_t new_size, size_t old_size);
void nm_os_free(void *);
/* passes a packet up to the host stack.
* If the packet is sent (or dropped) immediately it returns NULL,
* otherwise it links the packet to prev and returns m.
@ -317,6 +336,12 @@ nm_txrx_swap(enum txrx t)
#define for_rx_tx(t) for ((t) = 0; (t) < NR_TXRX; (t)++)
#ifdef WITH_MONITOR
struct netmap_zmon_list {
struct netmap_kring *next;
struct netmap_kring *prev;
};
#endif /* WITH_MONITOR */
/*
* private, kernel view of a ring. Keeps track of the status of
@ -491,6 +516,12 @@ struct netmap_kring {
struct netmap_kring **monitors;
uint32_t max_monitors; /* current size of the monitors array */
uint32_t n_monitors; /* next unused entry in the monitor array */
uint32_t mon_pos[NR_TXRX]; /* index of this ring in the monitored ring array */
uint32_t mon_tail; /* last seen slot on rx */
/* circular list of zero-copy monitors */
struct netmap_zmon_list zmon_list[NR_TXRX];
/*
* Monitors work by intercepting the sync and notify callbacks of the
* monitored krings. This is implemented by replacing the pointers
@ -499,8 +530,6 @@ struct netmap_kring {
int (*mon_sync)(struct netmap_kring *kring, int flags);
int (*mon_notify)(struct netmap_kring *kring, int flags);
uint32_t mon_tail; /* last seen slot on rx */
uint32_t mon_pos; /* index of this ring in the monitored ring array */
#endif
}
#ifdef _WIN32
@ -731,8 +760,9 @@ struct netmap_adapter {
int (*nm_txsync)(struct netmap_kring *kring, int flags);
int (*nm_rxsync)(struct netmap_kring *kring, int flags);
int (*nm_notify)(struct netmap_kring *kring, int flags);
#define NAF_FORCE_READ 1
#define NAF_FORCE_RECLAIM 2
#define NAF_FORCE_READ 1
#define NAF_FORCE_RECLAIM 2
#define NAF_CAN_FORWARD_DOWN 4
/* return configuration information */
int (*nm_config)(struct netmap_adapter *,
u_int *txr, u_int *txd, u_int *rxr, u_int *rxd);
@ -854,6 +884,7 @@ struct netmap_vp_adapter { /* VALE software port */
int bdg_port;
struct nm_bridge *na_bdg;
int retry;
int autodelete; /* remove the ifp on last reference */
/* Maximum Frame Size, used in bdg_mismatch_datapath() */
u_int mfs;
@ -977,7 +1008,10 @@ struct netmap_bwrap_adapter {
struct nm_bdg_polling_state *na_polling_state;
};
int netmap_bwrap_attach(const char *name, struct netmap_adapter *);
int netmap_vi_create(struct nmreq *, int);
#else /* !WITH_VALE */
#define netmap_vi_create(nmr, a) (EOPNOTSUPP)
#endif /* WITH_VALE */
#ifdef WITH_PIPES
@ -993,6 +1027,7 @@ struct netmap_pipe_adapter {
struct netmap_adapter *parent; /* adapter that owns the memory */
struct netmap_pipe_adapter *peer; /* the other end of the pipe */
int peer_ref; /* 1 iff we are holding a ref to the peer */
struct ifnet *parent_ifp; /* maybe null */
u_int parent_slot; /* index in the parent pipe array */
};
@ -1149,6 +1184,7 @@ static __inline void nm_kr_start(struct netmap_kring *kr)
* virtual ports (vale, pipes, monitor)
*/
int netmap_attach(struct netmap_adapter *);
int netmap_attach_ext(struct netmap_adapter *, size_t size);
void netmap_detach(struct ifnet *);
int netmap_transmit(struct ifnet *, struct mbuf *);
struct netmap_slot *netmap_reset(struct netmap_adapter *na,
@ -1380,9 +1416,10 @@ void netmap_do_unregif(struct netmap_priv_d *priv);
u_int nm_bound_var(u_int *v, u_int dflt, u_int lo, u_int hi, const char *msg);
int netmap_get_na(struct nmreq *nmr, struct netmap_adapter **na,
struct ifnet **ifp, int create);
struct ifnet **ifp, struct netmap_mem_d *nmd, int create);
void netmap_unget_na(struct netmap_adapter *na, struct ifnet *ifp);
int netmap_get_hw_na(struct ifnet *ifp, struct netmap_adapter **na);
int netmap_get_hw_na(struct ifnet *ifp,
struct netmap_mem_d *nmd, struct netmap_adapter **na);
#ifdef WITH_VALE
@ -1414,7 +1451,8 @@ u_int netmap_bdg_learning(struct nm_bdg_fwd *ft, uint8_t *dst_ring,
#define NM_BDG_NOPORT (NM_BDG_MAXPORTS+1)
/* these are redefined in case of no VALE support */
int netmap_get_bdg_na(struct nmreq *nmr, struct netmap_adapter **na, int create);
int netmap_get_bdg_na(struct nmreq *nmr, struct netmap_adapter **na,
struct netmap_mem_d *nmd, int create);
struct nm_bridge *netmap_init_bridges2(u_int);
void netmap_uninit_bridges2(struct nm_bridge *, u_int);
int netmap_init_bridges(void);
@ -1423,7 +1461,7 @@ int netmap_bdg_ctl(struct nmreq *nmr, struct netmap_bdg_ops *bdg_ops);
int netmap_bdg_config(struct nmreq *nmr);
#else /* !WITH_VALE */
#define netmap_get_bdg_na(_1, _2, _3) 0
#define netmap_get_bdg_na(_1, _2, _3, _4) 0
#define netmap_init_bridges(_1) 0
#define netmap_uninit_bridges()
#define netmap_bdg_ctl(_1, _2) EINVAL
@ -1433,22 +1471,24 @@ int netmap_bdg_config(struct nmreq *nmr);
/* max number of pipes per device */
#define NM_MAXPIPES 64 /* XXX how many? */
void netmap_pipe_dealloc(struct netmap_adapter *);
int netmap_get_pipe_na(struct nmreq *nmr, struct netmap_adapter **na, int create);
int netmap_get_pipe_na(struct nmreq *nmr, struct netmap_adapter **na,
struct netmap_mem_d *nmd, int create);
#else /* !WITH_PIPES */
#define NM_MAXPIPES 0
#define netmap_pipe_alloc(_1, _2) 0
#define netmap_pipe_dealloc(_1)
#define netmap_get_pipe_na(nmr, _2, _3) \
#define netmap_get_pipe_na(nmr, _2, _3, _4) \
({ int role__ = (nmr)->nr_flags & NR_REG_MASK; \
(role__ == NR_REG_PIPE_MASTER || \
role__ == NR_REG_PIPE_SLAVE) ? EOPNOTSUPP : 0; })
#endif
#ifdef WITH_MONITOR
int netmap_get_monitor_na(struct nmreq *nmr, struct netmap_adapter **na, int create);
int netmap_get_monitor_na(struct nmreq *nmr, struct netmap_adapter **na,
struct netmap_mem_d *nmd, int create);
void netmap_monitor_stop(struct netmap_adapter *na);
#else
#define netmap_get_monitor_na(nmr, _2, _3) \
#define netmap_get_monitor_na(nmr, _2, _3, _4) \
((nmr)->nr_flags & (NR_MONITOR_TX | NR_MONITOR_RX) ? EOPNOTSUPP : 0)
#endif
@ -1532,6 +1572,7 @@ extern int netmap_generic_mit;
extern int netmap_generic_ringsize;
extern int netmap_generic_rings;
extern int netmap_generic_txqdisc;
extern int ptnetmap_tx_workers;
/*
* NA returns a pointer to the struct netmap adapter from the ifp,
@ -1781,6 +1822,7 @@ struct netmap_priv_d {
u_int np_qfirst[NR_TXRX],
np_qlast[NR_TXRX]; /* range of tx/rx rings to scan */
uint16_t np_txpoll; /* XXX and also np_rxpoll ? */
int np_sync_flags; /* to be passed to nm_sync */
int np_refs; /* use with NMG_LOCK held */
@ -1812,6 +1854,11 @@ static inline int nm_kring_pending(struct netmap_priv_d *np)
return 0;
}
#ifdef WITH_PIPES
int netmap_pipe_txsync(struct netmap_kring *txkring, int flags);
int netmap_pipe_rxsync(struct netmap_kring *rxkring, int flags);
#endif /* WITH_PIPES */
#ifdef WITH_MONITOR
struct netmap_monitor_adapter {
@ -1835,6 +1882,8 @@ int generic_rx_handler(struct ifnet *ifp, struct mbuf *m);;
int nm_os_catch_rx(struct netmap_generic_adapter *gna, int intercept);
int nm_os_catch_tx(struct netmap_generic_adapter *gna, int intercept);
int na_is_generic(struct netmap_adapter *na);
/*
* the generic transmit routine is passed a structure to optionally
* build a queue of descriptors, in an OS-specific way.
@ -1891,6 +1940,7 @@ int nm_os_mitigation_active(struct nm_generic_mit *mit);
void nm_os_mitigation_cleanup(struct nm_generic_mit *mit);
#else /* !WITH_GENERIC */
#define generic_netmap_attach(ifp) (EOPNOTSUPP)
#define na_is_generic(na) (0)
#endif /* WITH_GENERIC */
/* Shared declarations for the VALE switch. */
@ -2003,26 +2053,29 @@ void nm_os_vi_init_index(void);
/*
* kernel thread routines
*/
struct nm_kthread; /* OS-specific kthread - opaque */
typedef void (*nm_kthread_worker_fn_t)(void *data);
struct nm_kctx; /* OS-specific kernel context - opaque */
typedef void (*nm_kctx_worker_fn_t)(void *data, int is_kthread);
typedef void (*nm_kctx_notify_fn_t)(void *data);
/* kthread configuration */
struct nm_kthread_cfg {
long type; /* kthread type/identifier */
nm_kthread_worker_fn_t worker_fn; /* worker function */
void *worker_private;/* worker parameter */
int attach_user; /* attach kthread to user process */
struct nm_kctx_cfg {
long type; /* kthread type/identifier */
nm_kctx_worker_fn_t worker_fn; /* worker function */
void *worker_private;/* worker parameter */
nm_kctx_notify_fn_t notify_fn; /* notify function */
int attach_user; /* attach kthread to user process */
int use_kthread; /* use a kthread for the context */
};
/* kthread configuration */
struct nm_kthread *nm_os_kthread_create(struct nm_kthread_cfg *cfg,
struct nm_kctx *nm_os_kctx_create(struct nm_kctx_cfg *cfg,
unsigned int cfgtype,
void *opaque);
int nm_os_kthread_start(struct nm_kthread *);
void nm_os_kthread_stop(struct nm_kthread *);
void nm_os_kthread_delete(struct nm_kthread *);
void nm_os_kthread_wakeup_worker(struct nm_kthread *nmk);
void nm_os_kthread_send_irq(struct nm_kthread *);
void nm_os_kthread_set_affinity(struct nm_kthread *, int);
int nm_os_kctx_worker_start(struct nm_kctx *);
void nm_os_kctx_worker_stop(struct nm_kctx *);
void nm_os_kctx_destroy(struct nm_kctx *);
void nm_os_kctx_worker_wakeup(struct nm_kctx *nmk);
void nm_os_kctx_send_irq(struct nm_kctx *);
void nm_os_kctx_worker_setaff(struct nm_kctx *, int);
u_int nm_os_ncpus(void);
#ifdef WITH_PTNETMAP_HOST
@ -2032,12 +2085,18 @@ u_int nm_os_ncpus(void);
struct netmap_pt_host_adapter {
struct netmap_adapter up;
/* the passed-through adapter */
struct netmap_adapter *parent;
/* parent->na_flags, saved at NETMAP_PT_HOST_CREATE time,
* and restored at NETMAP_PT_HOST_DELETE time */
uint32_t parent_na_flags;
int (*parent_nm_notify)(struct netmap_kring *kring, int flags);
void *ptns;
};
/* ptnetmap HOST routines */
int netmap_get_pt_host_na(struct nmreq *nmr, struct netmap_adapter **na, int create);
int netmap_get_pt_host_na(struct nmreq *nmr, struct netmap_adapter **na,
struct netmap_mem_d * nmd, int create);
int ptnetmap_ctl(struct nmreq *nmr, struct netmap_adapter *na);
static inline int
nm_ptnetmap_host_on(struct netmap_adapter *na)
@ -2045,7 +2104,7 @@ nm_ptnetmap_host_on(struct netmap_adapter *na)
return na && na->na_flags & NAF_PTNETMAP_HOST;
}
#else /* !WITH_PTNETMAP_HOST */
#define netmap_get_pt_host_na(nmr, _2, _3) \
#define netmap_get_pt_host_na(nmr, _2, _3, _4) \
((nmr)->nr_flags & (NR_PTNETMAP_HOST) ? EOPNOTSUPP : 0)
#define ptnetmap_ctl(_1, _2) EINVAL
#define nm_ptnetmap_host_on(_1) EINVAL

8
sys/dev/netmap/netmap_mbq.h
View File

@ -29,8 +29,8 @@
*/
#ifndef __NETMAP_MBQ_H__
#define __NETMAP_MBQ_H__
#ifndef _NET_NETMAP_MBQ_H__
#define _NET_NETMAP_MBQ_H__
/*
* These function implement an mbuf tailq with an optional lock.
@ -67,7 +67,7 @@ void mbq_purge(struct mbq *q);
static inline struct mbuf *
mbq_peek(struct mbq *q)
{
return q->head ? q->head : NULL;
return q->head;
}
static inline void
@ -94,4 +94,4 @@ static inline unsigned int mbq_len(struct mbq *q)
return q->count;
}
#endif /* __NETMAP_MBQ_H_ */
#endif /* _NET_NETMAP_MBQ_H_ */

382
sys/dev/netmap/netmap_mem2.c
View File

@ -87,6 +87,9 @@ enum {
struct netmap_obj_params {
u_int size;
u_int num;
u_int last_size;
u_int last_num;
};
struct netmap_obj_pool {
@ -139,20 +142,20 @@ struct netmap_mem_ops {
ssize_t (*nmd_if_offset)(struct netmap_mem_d *, const void *vaddr);
void (*nmd_delete)(struct netmap_mem_d *);
struct netmap_if * (*nmd_if_new)(struct netmap_adapter *);
struct netmap_if * (*nmd_if_new)(struct netmap_adapter *,
struct netmap_priv_d *);
void (*nmd_if_delete)(struct netmap_adapter *, struct netmap_if *);
int (*nmd_rings_create)(struct netmap_adapter *);
void (*nmd_rings_delete)(struct netmap_adapter *);
};
typedef uint16_t nm_memid_t;
struct netmap_mem_d {
NMA_LOCK_T nm_mtx; /* protect the allocator */
u_int nm_totalsize; /* shorthand */
u_int flags;
#define NETMAP_MEM_FINALIZED 0x1 /* preallocation done */
#define NETMAP_MEM_HIDDEN 0x8 /* beeing prepared */
int lasterr; /* last error for curr config */
int active; /* active users */
int refcount;
@ -166,6 +169,11 @@ struct netmap_mem_d {
struct netmap_mem_d *prev, *next;
struct netmap_mem_ops *ops;
struct netmap_obj_params params[NETMAP_POOLS_NR];
#define NM_MEM_NAMESZ 16
char name[NM_MEM_NAMESZ];
};
/*
@ -214,7 +222,7 @@ NMD_DEFCB(int, config);
NMD_DEFCB1(ssize_t, if_offset, const void *);
NMD_DEFCB(void, delete);
NMD_DEFNACB(struct netmap_if *, if_new);
NMD_DEFNACB1(struct netmap_if *, if_new, struct netmap_priv_d *);
NMD_DEFNACB1(void, if_delete, struct netmap_if *);
NMD_DEFNACB(int, rings_create);
NMD_DEFNACB(void, rings_delete);
@ -222,6 +230,13 @@ NMD_DEFNACB(void, rings_delete);
static int netmap_mem_map(struct netmap_obj_pool *, struct netmap_adapter *);
static int netmap_mem_unmap(struct netmap_obj_pool *, struct netmap_adapter *);
static int nm_mem_assign_group(struct netmap_mem_d *, struct device *);
static void nm_mem_release_id(struct netmap_mem_d *);
nm_memid_t
netmap_mem_get_id(struct netmap_mem_d *nmd)
{
return nmd->nm_id;
}
#define NMA_LOCK_INIT(n) NM_MTX_INIT((n)->nm_mtx)
#define NMA_LOCK_DESTROY(n) NM_MTX_DESTROY((n)->nm_mtx)
@ -230,34 +245,35 @@ static int nm_mem_assign_group(struct netmap_mem_d *, struct device *);
#ifdef NM_DEBUG_MEM_PUTGET
#define NM_DBG_REFC(nmd, func, line) \
printf("%s:%d mem[%d] -> %d\n", func, line, (nmd)->nm_id, (nmd)->refcount);
nm_prinf("%s:%d mem[%d] -> %d\n", func, line, (nmd)->nm_id, (nmd)->refcount);
#else
#define NM_DBG_REFC(nmd, func, line)
#endif
#ifdef NM_DEBUG_MEM_PUTGET
void __netmap_mem_get(struct netmap_mem_d *nmd, const char *func, int line)
#else
void netmap_mem_get(struct netmap_mem_d *nmd)
#endif
/* circular list of all existing allocators */
static struct netmap_mem_d *netmap_last_mem_d = &nm_mem;
NM_MTX_T nm_mem_list_lock;
struct netmap_mem_d *
__netmap_mem_get(struct netmap_mem_d *nmd, const char *func, int line)
{
NMA_LOCK(nmd);
NM_MTX_LOCK(nm_mem_list_lock);
nmd->refcount++;
NM_DBG_REFC(nmd, func, line);
NMA_UNLOCK(nmd);
NM_MTX_UNLOCK(nm_mem_list_lock);
return nmd;
}
#ifdef NM_DEBUG_MEM_PUTGET
void __netmap_mem_put(struct netmap_mem_d *nmd, const char *func, int line)
#else
void netmap_mem_put(struct netmap_mem_d *nmd)
#endif
void
__netmap_mem_put(struct netmap_mem_d *nmd, const char *func, int line)
{
int last;
NMA_LOCK(nmd);
NM_MTX_LOCK(nm_mem_list_lock);
last = (--nmd->refcount == 0);
if (last)
nm_mem_release_id(nmd);
NM_DBG_REFC(nmd, func, line);
NMA_UNLOCK(nmd);
NM_MTX_UNLOCK(nm_mem_list_lock);
if (last)
netmap_mem_delete(nmd);
}
@ -349,21 +365,6 @@ netmap_mem2_get_lut(struct netmap_mem_d *nmd, struct netmap_lut *lut)
return 0;
}
static struct netmap_obj_params netmap_params[NETMAP_POOLS_NR] = {
[NETMAP_IF_POOL] = {
.size = 1024,
.num = 100,
},
[NETMAP_RING_POOL] = {
.size = 9*PAGE_SIZE,
.num = 200,
},
[NETMAP_BUF_POOL] = {
.size = 2048,
.num = NETMAP_BUF_MAX_NUM,
},
};
static struct netmap_obj_params netmap_min_priv_params[NETMAP_POOLS_NR] = {
[NETMAP_IF_POOL] = {
.size = 1024,
@ -411,18 +412,33 @@ struct netmap_mem_d nm_mem = { /* Our memory allocator. */
},
},
.params = {
[NETMAP_IF_POOL] = {
.size = 1024,
.num = 100,
},
[NETMAP_RING_POOL] = {
.size = 9*PAGE_SIZE,
.num = 200,
},
[NETMAP_BUF_POOL] = {
.size = 2048,
.num = NETMAP_BUF_MAX_NUM,
},
},
.nm_id = 1,
.nm_grp = -1,
.prev = &nm_mem,
.next = &nm_mem,
.ops = &netmap_mem_global_ops
.ops = &netmap_mem_global_ops,
.name = "1"
};
static struct netmap_mem_d *netmap_last_mem_d = &nm_mem;
/* blueprint for the private memory allocators */
extern struct netmap_mem_ops netmap_mem_private_ops; /* forward */
/* XXX clang is not happy about using name as a print format */
@ -451,9 +467,11 @@ static const struct netmap_mem_d nm_blueprint = {
},
},
.nm_grp = -1,
.flags = NETMAP_MEM_PRIVATE,
.ops = &netmap_mem_private_ops
.ops = &netmap_mem_global_ops,
};
/* memory allocator related sysctls */
@ -464,11 +482,11 @@ static const struct netmap_mem_d nm_blueprint = {
#define DECLARE_SYSCTLS(id, name) \
SYSBEGIN(mem2_ ## name); \
SYSCTL_INT(_dev_netmap, OID_AUTO, name##_size, \
CTLFLAG_RW, &netmap_params[id].size, 0, "Requested size of netmap " STRINGIFY(name) "s"); \
CTLFLAG_RW, &nm_mem.params[id].size, 0, "Requested size of netmap " STRINGIFY(name) "s"); \
SYSCTL_INT(_dev_netmap, OID_AUTO, name##_curr_size, \
CTLFLAG_RD, &nm_mem.pools[id]._objsize, 0, "Current size of netmap " STRINGIFY(name) "s"); \
SYSCTL_INT(_dev_netmap, OID_AUTO, name##_num, \
CTLFLAG_RW, &netmap_params[id].num, 0, "Requested number of netmap " STRINGIFY(name) "s"); \
CTLFLAG_RW, &nm_mem.params[id].num, 0, "Requested number of netmap " STRINGIFY(name) "s"); \
SYSCTL_INT(_dev_netmap, OID_AUTO, name##_curr_num, \
CTLFLAG_RD, &nm_mem.pools[id].objtotal, 0, "Current number of netmap " STRINGIFY(name) "s"); \
SYSCTL_INT(_dev_netmap, OID_AUTO, priv_##name##_size, \
@ -484,7 +502,7 @@ DECLARE_SYSCTLS(NETMAP_IF_POOL, if);
DECLARE_SYSCTLS(NETMAP_RING_POOL, ring);
DECLARE_SYSCTLS(NETMAP_BUF_POOL, buf);
/* call with NMA_LOCK(&nm_mem) held */
/* call with nm_mem_list_lock held */
static int
nm_mem_assign_id_locked(struct netmap_mem_d *nmd)
{
@ -505,6 +523,8 @@ nm_mem_assign_id_locked(struct netmap_mem_d *nmd)
scan->prev->next = nmd;
scan->prev = nmd;
netmap_last_mem_d = nmd;
nmd->refcount = 1;
NM_DBG_REFC(nmd, __FUNCTION__, __LINE__);
error = 0;
break;
}
@ -513,24 +533,23 @@ nm_mem_assign_id_locked(struct netmap_mem_d *nmd)
return error;
}
/* call with NMA_LOCK(&nm_mem) *not* held */
/* call with nm_mem_list_lock *not* held */
static int
nm_mem_assign_id(struct netmap_mem_d *nmd)
{
int ret;
NMA_LOCK(&nm_mem);
NM_MTX_LOCK(nm_mem_list_lock);
ret = nm_mem_assign_id_locked(nmd);
NMA_UNLOCK(&nm_mem);
NM_MTX_UNLOCK(nm_mem_list_lock);
return ret;
}
/* call with nm_mem_list_lock held */
static void
nm_mem_release_id(struct netmap_mem_d *nmd)
{
NMA_LOCK(&nm_mem);
nmd->prev->next = nmd->next;
nmd->next->prev = nmd->prev;
@ -538,8 +557,26 @@ nm_mem_release_id(struct netmap_mem_d *nmd)
netmap_last_mem_d = nmd->prev;
nmd->prev = nmd->next = NULL;
}
NMA_UNLOCK(&nm_mem);
struct netmap_mem_d *
netmap_mem_find(nm_memid_t id)
{
struct netmap_mem_d *nmd;
NM_MTX_LOCK(nm_mem_list_lock);
nmd = netmap_last_mem_d;
do {
if (!(nmd->flags & NETMAP_MEM_HIDDEN) && nmd->nm_id == id) {
nmd->refcount++;
NM_DBG_REFC(nmd, __FUNCTION__, __LINE__);
NM_MTX_UNLOCK(nm_mem_list_lock);
return nmd;
}
nmd = nmd->next;
} while (nmd != netmap_last_mem_d);
NM_MTX_UNLOCK(nm_mem_list_lock);
return NULL;
}
static int
@ -1032,7 +1069,7 @@ netmap_reset_obj_allocator(struct netmap_obj_pool *p)
if (p == NULL)
return;
if (p->bitmap)
free(p->bitmap, M_NETMAP);
nm_os_free(p->bitmap);
p->bitmap = NULL;
if (p->lut) {
u_int i;
@ -1051,7 +1088,7 @@ netmap_reset_obj_allocator(struct netmap_obj_pool *p)
#ifdef linux
vfree(p->lut);
#else
free(p->lut, M_NETMAP);
nm_os_free(p->lut);
#endif
}
p->lut = NULL;
@ -1170,7 +1207,7 @@ nm_alloc_lut(u_int nobj)
#ifdef linux
lut = vmalloc(n);
#else
lut = malloc(n, M_NETMAP, M_NOWAIT | M_ZERO);
lut = nm_os_malloc(n);
#endif
return lut;
}
@ -1194,7 +1231,7 @@ netmap_finalize_obj_allocator(struct netmap_obj_pool *p)
/* Allocate the bitmap */
n = (p->objtotal + 31) / 32;
p->bitmap = malloc(sizeof(uint32_t) * n, M_NETMAP, M_NOWAIT | M_ZERO);
p->bitmap = nm_os_malloc(sizeof(uint32_t) * n);
if (p->bitmap == NULL) {
D("Unable to create bitmap (%d entries) for allocator '%s'", (int)n,
p->name);
@ -1278,16 +1315,18 @@ netmap_finalize_obj_allocator(struct netmap_obj_pool *p)
/* call with lock held */
static int
netmap_memory_config_changed(struct netmap_mem_d *nmd)
netmap_mem_params_changed(struct netmap_obj_params* p)
{
int i;
int i, rv = 0;
for (i = 0; i < NETMAP_POOLS_NR; i++) {
if (nmd->pools[i].r_objsize != netmap_params[i].size ||
nmd->pools[i].r_objtotal != netmap_params[i].num)
return 1;
if (p[i].last_size != p[i].size || p[i].last_num != p[i].num) {
p[i].last_size = p[i].size;
p[i].last_num = p[i].num;
rv = 1;
}
}
return 0;
return rv;
}
static void
@ -1308,7 +1347,7 @@ netmap_mem_unmap(struct netmap_obj_pool *p, struct netmap_adapter *na)
{
int i, lim = p->_objtotal;
if (na->pdev == NULL)
if (na == NULL || na->pdev == NULL)
return 0;
#if defined(__FreeBSD__)
@ -1386,66 +1425,16 @@ netmap_mem_finalize_all(struct netmap_mem_d *nmd)
return nmd->lasterr;
}
static void
netmap_mem_private_delete(struct netmap_mem_d *nmd)
{
if (nmd == NULL)
return;
if (netmap_verbose)
D("deleting %p", nmd);
if (nmd->active > 0)
D("bug: deleting mem allocator with active=%d!", nmd->active);
nm_mem_release_id(nmd);
if (netmap_verbose)
D("done deleting %p", nmd);
NMA_LOCK_DESTROY(nmd);
free(nmd, M_DEVBUF);
}
static int
netmap_mem_private_config(struct netmap_mem_d *nmd)
{
/* nothing to do, we are configured on creation
* and configuration never changes thereafter
*/
return 0;
}
static int
netmap_mem_private_finalize(struct netmap_mem_d *nmd)
{
int err;
err = netmap_mem_finalize_all(nmd);
if (!err)
nmd->active++;
return err;
}
static void
netmap_mem_private_deref(struct netmap_mem_d *nmd)
{
if (--nmd->active <= 0)
netmap_mem_reset_all(nmd);
}
/*
* allocator for private memory
*/
struct netmap_mem_d *
netmap_mem_private_new(const char *name, u_int txr, u_int txd,
u_int rxr, u_int rxd, u_int extra_bufs, u_int npipes, int *perr)
static struct netmap_mem_d *
_netmap_mem_private_new(struct netmap_obj_params *p, int *perr)
{
struct netmap_mem_d *d = NULL;
struct netmap_obj_params p[NETMAP_POOLS_NR];
int i, err;
u_int v, maxd;
int i, err = 0;
d = malloc(sizeof(struct netmap_mem_d),
M_DEVBUF, M_NOWAIT | M_ZERO);
d = nm_os_malloc(sizeof(struct netmap_mem_d));
if (d == NULL) {
err = ENOMEM;
goto error;
@ -1456,7 +1445,41 @@ netmap_mem_private_new(const char *name, u_int txr, u_int txd,
err = nm_mem_assign_id(d);
if (err)
goto error;
snprintf(d->name, NM_MEM_NAMESZ, "%d", d->nm_id);
for (i = 0; i < NETMAP_POOLS_NR; i++) {
snprintf(d->pools[i].name, NETMAP_POOL_MAX_NAMSZ,
nm_blueprint.pools[i].name,
d->name);
d->params[i].num = p[i].num;
d->params[i].size = p[i].size;
}
NMA_LOCK_INIT(d);
err = netmap_mem_config(d);
if (err)
goto error;
d->flags &= ~NETMAP_MEM_FINALIZED;
return d;
error:
netmap_mem_delete(d);
if (perr)
*perr = err;
return NULL;
}
struct netmap_mem_d *
netmap_mem_private_new(u_int txr, u_int txd, u_int rxr, u_int rxd,
u_int extra_bufs, u_int npipes, int *perr)
{
struct netmap_mem_d *d = NULL;
struct netmap_obj_params p[NETMAP_POOLS_NR];
int i, err = 0;
u_int v, maxd;
/* account for the fake host rings */
txr++;
rxr++;
@ -1502,23 +1525,13 @@ netmap_mem_private_new(const char *name, u_int txr, u_int txd,
p[NETMAP_BUF_POOL].num,
p[NETMAP_BUF_POOL].size);
for (i = 0; i < NETMAP_POOLS_NR; i++) {
snprintf(d->pools[i].name, NETMAP_POOL_MAX_NAMSZ,
nm_blueprint.pools[i].name,
name);
err = netmap_config_obj_allocator(&d->pools[i],
p[i].num, p[i].size);
if (err)
goto error;
}
d->flags &= ~NETMAP_MEM_FINALIZED;
NMA_LOCK_INIT(d);
d = _netmap_mem_private_new(p, perr);
if (d == NULL)
goto error;
return d;
error:
netmap_mem_private_delete(d);
netmap_mem_delete(d);
if (perr)
*perr = err;
return NULL;
@ -1527,7 +1540,7 @@ netmap_mem_private_new(const char *name, u_int txr, u_int txd,
/* call with lock held */
static int
netmap_mem_global_config(struct netmap_mem_d *nmd)
netmap_mem2_config(struct netmap_mem_d *nmd)
{
int i;
@ -1535,7 +1548,7 @@ netmap_mem_global_config(struct netmap_mem_d *nmd)
/* already in use, we cannot change the configuration */
goto out;
if (!netmap_memory_config_changed(nmd))
if (!netmap_mem_params_changed(nmd->params))
goto out;
ND("reconfiguring");
@ -1550,7 +1563,7 @@ netmap_mem_global_config(struct netmap_mem_d *nmd)
for (i = 0; i < NETMAP_POOLS_NR; i++) {
nmd->lasterr = netmap_config_obj_allocator(&nmd->pools[i],
netmap_params[i].num, netmap_params[i].size);
nmd->params[i].num, nmd->params[i].size);
if (nmd->lasterr)
goto out;
}
@ -1561,13 +1574,13 @@ netmap_mem_global_config(struct netmap_mem_d *nmd)
}
static int
netmap_mem_global_finalize(struct netmap_mem_d *nmd)
netmap_mem2_finalize(struct netmap_mem_d *nmd)
{
int err;
/* update configuration if changed */
if (netmap_mem_global_config(nmd))
return nmd->lasterr;
if (netmap_mem2_config(nmd))
goto out1;
nmd->active++;
@ -1585,6 +1598,7 @@ netmap_mem_global_finalize(struct netmap_mem_d *nmd)
out:
if (nmd->lasterr)
nmd->active--;
out1:
err = nmd->lasterr;
return err;
@ -1592,20 +1606,23 @@ netmap_mem_global_finalize(struct netmap_mem_d *nmd)
}
static void
netmap_mem_global_delete(struct netmap_mem_d *nmd)
netmap_mem2_delete(struct netmap_mem_d *nmd)
{
int i;
for (i = 0; i < NETMAP_POOLS_NR; i++) {
netmap_destroy_obj_allocator(&nm_mem.pools[i]);
netmap_destroy_obj_allocator(&nmd->pools[i]);
}
NMA_LOCK_DESTROY(&nm_mem);
NMA_LOCK_DESTROY(nmd);
if (nmd != &nm_mem)
nm_os_free(nmd);
}
int
netmap_mem_init(void)
{
NM_MTX_INIT(nm_mem_list_lock);
NMA_LOCK_INIT(&nm_mem);
netmap_mem_get(&nm_mem);
return (0);
@ -1742,7 +1759,7 @@ netmap_mem2_rings_delete(struct netmap_adapter *na)
* the interface is in netmap mode.
*/
static struct netmap_if *
netmap_mem2_if_new(struct netmap_adapter *na)
netmap_mem2_if_new(struct netmap_adapter *na, struct netmap_priv_d *priv)
{
struct netmap_if *nifp;
ssize_t base; /* handy for relative offsets between rings and nifp */
@ -1781,24 +1798,28 @@ netmap_mem2_if_new(struct netmap_adapter *na)
*/
base = netmap_if_offset(na->nm_mem, nifp);
for (i = 0; i < n[NR_TX]; i++) {
if (na->tx_rings[i].ring == NULL) {
// XXX maybe use the offset of an error ring,
// like we do for buffers?
*(ssize_t *)(uintptr_t)&nifp->ring_ofs[i] = 0;
continue;
/* XXX instead of ofs == 0 maybe use the offset of an error
* ring, like we do for buffers? */
ssize_t ofs = 0;
if (na->tx_rings[i].ring != NULL && i >= priv->np_qfirst[NR_TX]
&& i < priv->np_qlast[NR_TX]) {
ofs = netmap_ring_offset(na->nm_mem,
na->tx_rings[i].ring) - base;
}
*(ssize_t *)(uintptr_t)&nifp->ring_ofs[i] =
netmap_ring_offset(na->nm_mem, na->tx_rings[i].ring) - base;
*(ssize_t *)(uintptr_t)&nifp->ring_ofs[i] = ofs;
}
for (i = 0; i < n[NR_RX]; i++) {
if (na->rx_rings[i].ring == NULL) {
// XXX maybe use the offset of an error ring,
// like we do for buffers?
*(ssize_t *)(uintptr_t)&nifp->ring_ofs[i+n[NR_TX]] = 0;
continue;
/* XXX instead of ofs == 0 maybe use the offset of an error
* ring, like we do for buffers? */
ssize_t ofs = 0;
if (na->rx_rings[i].ring != NULL && i >= priv->np_qfirst[NR_RX]
&& i < priv->np_qlast[NR_RX]) {
ofs = netmap_ring_offset(na->nm_mem,
na->rx_rings[i].ring) - base;
}
*(ssize_t *)(uintptr_t)&nifp->ring_ofs[i+n[NR_TX]] =
netmap_ring_offset(na->nm_mem, na->rx_rings[i].ring) - base;
*(ssize_t *)(uintptr_t)&nifp->ring_ofs[i+n[NR_TX]] = ofs;
}
NMA_UNLOCK(na->nm_mem);
@ -1821,7 +1842,7 @@ netmap_mem2_if_delete(struct netmap_adapter *na, struct netmap_if *nifp)
}
static void
netmap_mem_global_deref(struct netmap_mem_d *nmd)
netmap_mem2_deref(struct netmap_mem_d *nmd)
{
nmd->active--;
@ -1836,46 +1857,27 @@ struct netmap_mem_ops netmap_mem_global_ops = {
.nmd_get_lut = netmap_mem2_get_lut,
.nmd_get_info = netmap_mem2_get_info,
.nmd_ofstophys = netmap_mem2_ofstophys,
.nmd_config = netmap_mem_global_config,
.nmd_finalize = netmap_mem_global_finalize,
.nmd_deref = netmap_mem_global_deref,
.nmd_delete = netmap_mem_global_delete,
.nmd_config = netmap_mem2_config,
.nmd_finalize = netmap_mem2_finalize,
.nmd_deref = netmap_mem2_deref,
.nmd_delete = netmap_mem2_delete,
.nmd_if_offset = netmap_mem2_if_offset,
.nmd_if_new = netmap_mem2_if_new,
.nmd_if_delete = netmap_mem2_if_delete,
.nmd_rings_create = netmap_mem2_rings_create,
.nmd_rings_delete = netmap_mem2_rings_delete
};
struct netmap_mem_ops netmap_mem_private_ops = {
.nmd_get_lut = netmap_mem2_get_lut,
.nmd_get_info = netmap_mem2_get_info,
.nmd_ofstophys = netmap_mem2_ofstophys,
.nmd_config = netmap_mem_private_config,
.nmd_finalize = netmap_mem_private_finalize,
.nmd_deref = netmap_mem_private_deref,
.nmd_if_offset = netmap_mem2_if_offset,
.nmd_delete = netmap_mem_private_delete,
.nmd_if_new = netmap_mem2_if_new,
.nmd_if_delete = netmap_mem2_if_delete,
.nmd_rings_create = netmap_mem2_rings_create,
.nmd_rings_delete = netmap_mem2_rings_delete
};
int
netmap_mem_pools_info_get(struct nmreq *nmr, struct netmap_adapter *na)
netmap_mem_pools_info_get(struct nmreq *nmr, struct netmap_mem_d *nmd)
{
uintptr_t *pp = (uintptr_t *)&nmr->nr_arg1;
struct netmap_pools_info *upi = (struct netmap_pools_info *)(*pp);
struct netmap_mem_d *nmd = na->nm_mem;
struct netmap_pools_info pi;
unsigned int memsize;
uint16_t memid;
int ret;
if (!nmd) {
return -1;
}
ret = netmap_mem_get_info(nmd, &memsize, NULL, &memid);
if (ret) {
return ret;
@ -1883,6 +1885,7 @@ netmap_mem_pools_info_get(struct nmreq *nmr, struct netmap_adapter *na)
pi.memsize = memsize;
pi.memid = memid;
NMA_LOCK(nmd);
pi.if_pool_offset = 0;
pi.if_pool_objtotal = nmd->pools[NETMAP_IF_POOL].objtotal;
pi.if_pool_objsize = nmd->pools[NETMAP_IF_POOL]._objsize;
@ -1895,6 +1898,7 @@ netmap_mem_pools_info_get(struct nmreq *nmr, struct netmap_adapter *na)
nmd->pools[NETMAP_RING_POOL].memtotal;
pi.buf_pool_objtotal = nmd->pools[NETMAP_BUF_POOL].objtotal;
pi.buf_pool_objsize = nmd->pools[NETMAP_BUF_POOL]._objsize;
NMA_UNLOCK(nmd);
ret = copyout(&pi, upi, sizeof(pi));
if (ret) {
@ -1929,8 +1933,7 @@ netmap_mem_pt_guest_ifp_add(struct netmap_mem_d *nmd, struct ifnet *ifp,
unsigned int nifp_offset)
{
struct netmap_mem_ptg *ptnmd = (struct netmap_mem_ptg *)nmd;
struct mem_pt_if *ptif = malloc(sizeof(*ptif), M_NETMAP,
M_NOWAIT | M_ZERO);
struct mem_pt_if *ptif = nm_os_malloc(sizeof(*ptif));
if (!ptif) {
return ENOMEM;
@ -1989,7 +1992,7 @@ netmap_mem_pt_guest_ifp_del(struct netmap_mem_d *nmd, struct ifnet *ifp)
}
D("removed (ifp=%p,nifp_offset=%u)",
curr->ifp, curr->nifp_offset);
free(curr, M_NETMAP);
nm_os_free(curr);
ret = 0;
break;
}
@ -2143,7 +2146,7 @@ netmap_mem_pt_guest_deref(struct netmap_mem_d *nmd)
if (ptnmd->ptn_dev) {
nm_os_pt_memdev_iounmap(ptnmd->ptn_dev);
}
ptnmd->nm_addr = NULL;
ptnmd->nm_addr = 0;
ptnmd->nm_paddr = 0;
}
}
@ -2165,15 +2168,14 @@ netmap_mem_pt_guest_delete(struct netmap_mem_d *nmd)
D("deleting %p", nmd);
if (nmd->active > 0)
D("bug: deleting mem allocator with active=%d!", nmd->active);
nm_mem_release_id(nmd);
if (netmap_verbose)
D("done deleting %p", nmd);
NMA_LOCK_DESTROY(nmd);
free(nmd, M_DEVBUF);
nm_os_free(nmd);
}
static struct netmap_if *
netmap_mem_pt_guest_if_new(struct netmap_adapter *na)
netmap_mem_pt_guest_if_new(struct netmap_adapter *na, struct netmap_priv_d *priv)
{
struct netmap_mem_ptg *ptnmd = (struct netmap_mem_ptg *)na->nm_mem;
struct mem_pt_if *ptif;
@ -2275,7 +2277,7 @@ static struct netmap_mem_ops netmap_mem_pt_guest_ops = {
.nmd_rings_delete = netmap_mem_pt_guest_rings_delete
};
/* Called with NMA_LOCK(&nm_mem) held. */
/* Called with nm_mem_list_lock held. */
static struct netmap_mem_d *
netmap_mem_pt_guest_find_memid(nm_memid_t mem_id)
{
@ -2287,6 +2289,8 @@ netmap_mem_pt_guest_find_memid(nm_memid_t mem_id)
if (scan->ops->nmd_deref == netmap_mem_pt_guest_deref &&
((struct netmap_mem_ptg *)(scan))->host_mem_id == mem_id) {
mem = scan;
mem->refcount++;
NM_DBG_REFC(mem, __FUNCTION__, __LINE__);
break;
}
scan = scan->next;
@ -2295,15 +2299,14 @@ netmap_mem_pt_guest_find_memid(nm_memid_t mem_id)
return mem;
}
/* Called with NMA_LOCK(&nm_mem) held. */
/* Called with nm_mem_list_lock held. */
static struct netmap_mem_d *
netmap_mem_pt_guest_create(nm_memid_t mem_id)
{
struct netmap_mem_ptg *ptnmd;
int err = 0;
ptnmd = malloc(sizeof(struct netmap_mem_ptg),
M_DEVBUF, M_NOWAIT | M_ZERO);
ptnmd = nm_os_malloc(sizeof(struct netmap_mem_ptg));
if (ptnmd == NULL) {
err = ENOMEM;
goto error;
@ -2323,6 +2326,9 @@ netmap_mem_pt_guest_create(nm_memid_t mem_id)
NMA_LOCK_INIT(&ptnmd->up);
snprintf(ptnmd->up.name, NM_MEM_NAMESZ, "%d", ptnmd->up.nm_id);
return &ptnmd->up;
error:
netmap_mem_pt_guest_delete(&ptnmd->up);
@ -2338,12 +2344,12 @@ netmap_mem_pt_guest_get(nm_memid_t mem_id)
{
struct netmap_mem_d *nmd;
NMA_LOCK(&nm_mem);
NM_MTX_LOCK(nm_mem_list_lock);
nmd = netmap_mem_pt_guest_find_memid(mem_id);
if (nmd == NULL) {
nmd = netmap_mem_pt_guest_create(mem_id);
}
NMA_UNLOCK(&nm_mem);
NM_MTX_UNLOCK(nm_mem_list_lock);
return nmd;
}

36
sys/dev/netmap/netmap_mem2.h
View File

@ -119,8 +119,10 @@
*/
extern struct netmap_mem_d nm_mem;
typedef uint16_t nm_memid_t;
int netmap_mem_get_lut(struct netmap_mem_d *, struct netmap_lut *);
nm_memid_t netmap_mem_get_id(struct netmap_mem_d *);
vm_paddr_t netmap_mem_ofstophys(struct netmap_mem_d *, vm_ooffset_t);
#ifdef _WIN32
PMDL win32_build_user_vm_map(struct netmap_mem_d* nmd);
@ -128,7 +130,7 @@ PMDL win32_build_user_vm_map(struct netmap_mem_d* nmd);
int netmap_mem_finalize(struct netmap_mem_d *, struct netmap_adapter *);
int netmap_mem_init(void);
void netmap_mem_fini(void);
struct netmap_if * netmap_mem_if_new(struct netmap_adapter *);
struct netmap_if * netmap_mem_if_new(struct netmap_adapter *, struct netmap_priv_d *);
void netmap_mem_if_delete(struct netmap_adapter *, struct netmap_if *);
int netmap_mem_rings_create(struct netmap_adapter *);
void netmap_mem_rings_delete(struct netmap_adapter *);
@ -136,33 +138,15 @@ void netmap_mem_deref(struct netmap_mem_d *, struct netmap_adapter *);
int netmap_mem2_get_pool_info(struct netmap_mem_d *, u_int, u_int *, u_int *);
int netmap_mem_get_info(struct netmap_mem_d *, u_int *size, u_int *memflags, uint16_t *id);
ssize_t netmap_mem_if_offset(struct netmap_mem_d *, const void *vaddr);
struct netmap_mem_d* netmap_mem_private_new(const char *name,
u_int txr, u_int txd, u_int rxr, u_int rxd, u_int extra_bufs, u_int npipes,
int* error);
struct netmap_mem_d* netmap_mem_private_new( u_int txr, u_int txd, u_int rxr, u_int rxd,
u_int extra_bufs, u_int npipes, int* error);
void netmap_mem_delete(struct netmap_mem_d *);
//#define NM_DEBUG_MEM_PUTGET 1
#ifdef NM_DEBUG_MEM_PUTGET
#define netmap_mem_get(nmd) \
do { \
__netmap_mem_get(nmd, __FUNCTION__, __LINE__); \
} while (0)
#define netmap_mem_put(nmd) \
do { \
__netmap_mem_put(nmd, __FUNCTION__, __LINE__); \
} while (0)
void __netmap_mem_get(struct netmap_mem_d *, const char *, int);
#define netmap_mem_get(d) __netmap_mem_get(d, __FUNCTION__, __LINE__)
#define netmap_mem_put(d) __netmap_mem_put(d, __FUNCTION__, __LINE__)
struct netmap_mem_d* __netmap_mem_get(struct netmap_mem_d *, const char *, int);
void __netmap_mem_put(struct netmap_mem_d *, const char *, int);
#else /* !NM_DEBUG_MEM_PUTGET */
void netmap_mem_get(struct netmap_mem_d *);
void netmap_mem_put(struct netmap_mem_d *);
#endif /* !NM_DEBUG_PUTGET */
struct netmap_mem_d* netmap_mem_find(nm_memid_t);
#ifdef WITH_PTNETMAP_GUEST
struct netmap_mem_d* netmap_mem_pt_guest_new(struct ifnet *,
@ -173,7 +157,7 @@ struct netmap_mem_d* netmap_mem_pt_guest_attach(struct ptnetmap_memdev *, uint16
int netmap_mem_pt_guest_ifp_del(struct netmap_mem_d *, struct ifnet *);
#endif /* WITH_PTNETMAP_GUEST */
int netmap_mem_pools_info_get(struct nmreq *, struct netmap_adapter *);
int netmap_mem_pools_info_get(struct nmreq *, struct netmap_mem_d *);
#define NETMAP_MEM_PRIVATE 0x2 /* allocator uses private address space */
#define NETMAP_MEM_IO 0x4 /* the underlying memory is mmapped I/O */

405
sys/dev/netmap/netmap_monitor.c
View File

@ -128,6 +128,13 @@
********************************************************************
*/
static int netmap_zmon_reg(struct netmap_adapter *, int);
static int
nm_is_zmon(struct netmap_adapter *na)
{
return na->nm_register == netmap_zmon_reg;
}
/* nm_sync callback for the monitor's own tx rings.
* This makes no sense and always returns error
*/
@ -148,7 +155,7 @@ static int
netmap_monitor_rxsync(struct netmap_kring *kring, int flags)
{
ND("%s %x", kring->name, flags);
kring->nr_hwcur = kring->rcur;
kring->nr_hwcur = kring->rhead;
mb();
return 0;
}
@ -185,19 +192,16 @@ nm_txrx2flag(enum txrx t)
static int
nm_monitor_alloc(struct netmap_kring *kring, u_int n)
{
size_t len;
size_t old_len, len;
struct netmap_kring **nm;
if (n <= kring->max_monitors)
/* we already have more entries that requested */
return 0;
old_len = sizeof(struct netmap_kring *)*kring->max_monitors;
len = sizeof(struct netmap_kring *) * n;
#ifndef _WIN32
nm = realloc(kring->monitors, len, M_DEVBUF, M_NOWAIT | M_ZERO);
#else
nm = realloc(kring->monitors, len, sizeof(struct netmap_kring *)*kring->max_monitors);
#endif
nm = nm_os_realloc(kring->monitors, len, old_len);
if (nm == NULL)
return ENOMEM;
@ -216,13 +220,22 @@ nm_monitor_dealloc(struct netmap_kring *kring)
D("freeing not empty monitor array for %s (%d dangling monitors)!", kring->name,
kring->n_monitors);
}
free(kring->monitors, M_DEVBUF);
nm_os_free(kring->monitors);
kring->monitors = NULL;
kring->max_monitors = 0;
kring->n_monitors = 0;
}
}
/* returns 1 iff kring has no monitors */
static inline int
nm_monitor_none(struct netmap_kring *kring)
{
return kring->n_monitors == 0 &&
kring->zmon_list[NR_TX].next == NULL &&
kring->zmon_list[NR_RX].next == NULL;
}
/*
* monitors work by replacing the nm_sync() and possibly the
* nm_notify() callbacks in the monitored rings.
@ -233,71 +246,122 @@ static int netmap_monitor_parent_txsync(struct netmap_kring *, int);
static int netmap_monitor_parent_rxsync(struct netmap_kring *, int);
static int netmap_monitor_parent_notify(struct netmap_kring *, int);
/* add the monitor mkring to the list of monitors of kring.
* If this is the first monitor, intercept the callbacks
*/
static int
netmap_monitor_add(struct netmap_kring *mkring, struct netmap_kring *kring, int zcopy)
netmap_monitor_add(struct netmap_kring *mkring, struct netmap_kring *kring, int zmon)
{
int error = NM_IRQ_COMPLETED;
enum txrx t = kring->tx;
struct netmap_zmon_list *z = &kring->zmon_list[t];
struct netmap_zmon_list *mz = &mkring->zmon_list[t];
/* a zero-copy monitor which is not the first in the list
* must monitor the previous monitor
*/
if (zmon && z->prev != NULL)
kring = z->prev;
/* sinchronize with concurrently running nm_sync()s */
nm_kr_stop(kring, NM_KR_LOCKED);
/* make sure the monitor array exists and is big enough */
error = nm_monitor_alloc(kring, kring->n_monitors + 1);
if (error)
goto out;
kring->monitors[kring->n_monitors] = mkring;
mkring->mon_pos = kring->n_monitors;
kring->n_monitors++;
if (kring->n_monitors == 1) {
if (nm_monitor_none(kring)) {
/* this is the first monitor, intercept callbacks */
ND("%s: intercept callbacks on %s", mkring->name, kring->name);
ND("intercept callbacks on %s", kring->name);
kring->mon_sync = kring->nm_sync;
/* zcopy monitors do not override nm_notify(), but
* we save the original one regardless, so that
* netmap_monitor_del() does not need to know the
* monitor type
*/
kring->mon_notify = kring->nm_notify;
if (kring->tx == NR_TX) {
kring->nm_sync = (zcopy ? netmap_zmon_parent_txsync :
netmap_monitor_parent_txsync);
kring->nm_sync = netmap_monitor_parent_txsync;
} else {
kring->nm_sync = (zcopy ? netmap_zmon_parent_rxsync :
netmap_monitor_parent_rxsync);
if (!zcopy) {
/* also intercept notify */
kring->nm_notify = netmap_monitor_parent_notify;
kring->mon_tail = kring->nr_hwtail;
}
kring->nm_sync = netmap_monitor_parent_rxsync;
kring->nm_notify = netmap_monitor_parent_notify;
kring->mon_tail = kring->nr_hwtail;
}
}
if (zmon) {
/* append the zmon to the list */
struct netmap_monitor_adapter *mna =
(struct netmap_monitor_adapter *)mkring->na;
struct netmap_adapter *pna;
if (z->prev != NULL)
z->prev->zmon_list[t].next = mkring;
mz->prev = z->prev;
z->prev = mkring;
if (z->next == NULL)
z->next = mkring;
/* grap a reference to the previous netmap adapter
* in the chain (this may be the monitored port
* or another zero-copy monitor)
*/
pna = kring->na;
netmap_adapter_get(pna);
netmap_adapter_put(mna->priv.np_na);
mna->priv.np_na = pna;
} else {
/* make sure the monitor array exists and is big enough */
error = nm_monitor_alloc(kring, kring->n_monitors + 1);
if (error)
goto out;
kring->monitors[kring->n_monitors] = mkring;
mkring->mon_pos[kring->tx] = kring->n_monitors;
kring->n_monitors++;
}
out:
nm_kr_start(kring);
return error;
}
/* remove the monitor mkring from the list of monitors of kring.
* If this is the last monitor, restore the original callbacks
*/
static void
netmap_monitor_del(struct netmap_kring *mkring, struct netmap_kring *kring)
{
struct netmap_zmon_list *mz = &mkring->zmon_list[kring->tx];
int zmon = nm_is_zmon(mkring->na);
if (zmon && mz->prev != NULL)
kring = mz->prev;
/* sinchronize with concurrently running nm_sync()s */
nm_kr_stop(kring, NM_KR_LOCKED);
kring->n_monitors--;
if (mkring->mon_pos != kring->n_monitors) {
kring->monitors[mkring->mon_pos] = kring->monitors[kring->n_monitors];
kring->monitors[mkring->mon_pos]->mon_pos = mkring->mon_pos;
if (zmon) {
/* remove the monitor from the list */
if (mz->prev != NULL)
mz->prev->zmon_list[kring->tx].next = mz->next;
else
kring->zmon_list[kring->tx].next = mz->next;
if (mz->next != NULL) {
mz->next->zmon_list[kring->tx].prev = mz->prev;
} else {
kring->zmon_list[kring->tx].prev = mz->prev;
}
} else {
/* this is a copy monitor */
uint32_t mon_pos = mkring->mon_pos[kring->tx];
kring->n_monitors--;
if (mon_pos != kring->n_monitors) {
kring->monitors[mon_pos] =
kring->monitors[kring->n_monitors];
kring->monitors[mon_pos]->mon_pos[kring->tx] = mon_pos;
}
kring->monitors[kring->n_monitors] = NULL;
if (kring->n_monitors == 0) {
nm_monitor_dealloc(kring);
}
}
kring->monitors[kring->n_monitors] = NULL;
if (kring->n_monitors == 0) {
/* this was the last monitor, restore callbacks and delete monitor array */
ND("%s: restoring sync on %s: %p", mkring->name, kring->name, kring->mon_sync);
if (nm_monitor_none(kring)) {
/* this was the last monitor, restore the callbacks */
ND("%s: restoring sync on %s: %p", mkring->name, kring->name,
kring->mon_sync);
kring->nm_sync = kring->mon_sync;
kring->mon_sync = NULL;
if (kring->tx == NR_RX) {
@ -306,8 +370,8 @@ netmap_monitor_del(struct netmap_kring *mkring, struct netmap_kring *kring)
kring->nm_notify = kring->mon_notify;
kring->mon_notify = NULL;
}
nm_monitor_dealloc(kring);
}
nm_kr_start(kring);
}
@ -329,6 +393,7 @@ netmap_monitor_stop(struct netmap_adapter *na)
for (i = 0; i < nma_get_nrings(na, t) + 1; i++) {
struct netmap_kring *kring = &NMR(na, t)[i];
struct netmap_kring *zkring;
u_int j;
for (j = 0; j < kring->n_monitors; j++) {
@ -337,8 +402,33 @@ netmap_monitor_stop(struct netmap_adapter *na)
struct netmap_monitor_adapter *mna =
(struct netmap_monitor_adapter *)mkring->na;
/* forget about this adapter */
netmap_adapter_put(mna->priv.np_na);
mna->priv.np_na = NULL;
if (mna->priv.np_na != NULL) {
netmap_adapter_put(mna->priv.np_na);
mna->priv.np_na = NULL;
}
}
zkring = kring->zmon_list[kring->tx].next;
if (zkring != NULL) {
struct netmap_monitor_adapter *next =
(struct netmap_monitor_adapter *)zkring->na;
struct netmap_monitor_adapter *this =
(struct netmap_monitor_adapter *)na;
struct netmap_adapter *pna = this->priv.np_na;
/* let the next monitor forget about us */
if (next->priv.np_na != NULL) {
netmap_adapter_put(next->priv.np_na);
}
if (pna != NULL && nm_is_zmon(na)) {
/* we are a monitor ourselves and we may
* need to pass down the reference to
* the previous adapter in the chain
*/
netmap_adapter_get(pna);
next->priv.np_na = pna;
continue;
}
next->priv.np_na = NULL;
}
}
}
@ -357,7 +447,7 @@ netmap_monitor_reg_common(struct netmap_adapter *na, int onoff, int zmon)
struct netmap_adapter *pna = priv->np_na;
struct netmap_kring *kring, *mkring;
int i;
enum txrx t;
enum txrx t, s;
ND("%p: onoff %d", na, onoff);
if (onoff) {
@ -367,13 +457,19 @@ netmap_monitor_reg_common(struct netmap_adapter *na, int onoff, int zmon)
return ENXIO;
}
for_rx_tx(t) {
if (mna->flags & nm_txrx2flag(t)) {
for (i = priv->np_qfirst[t]; i < priv->np_qlast[t]; i++) {
kring = &NMR(pna, t)[i];
mkring = &na->rx_rings[i];
if (nm_kring_pending_on(mkring)) {
for (i = 0; i < nma_get_nrings(na, t) + 1; i++) {
mkring = &NMR(na, t)[i];
if (!nm_kring_pending_on(mkring))
continue;
mkring->nr_mode = NKR_NETMAP_ON;
if (t == NR_TX)
continue;
for_rx_tx(s) {
if (i > nma_get_nrings(pna, s))
continue;
if (mna->flags & nm_txrx2flag(s)) {
kring = &NMR(pna, s)[i];
netmap_monitor_add(mkring, kring, zmon);
mkring->nr_mode = NKR_NETMAP_ON;
}
}
}
@ -383,19 +479,25 @@ netmap_monitor_reg_common(struct netmap_adapter *na, int onoff, int zmon)
if (na->active_fds == 0)
na->na_flags &= ~NAF_NETMAP_ON;
for_rx_tx(t) {
if (mna->flags & nm_txrx2flag(t)) {
for (i = priv->np_qfirst[t]; i < priv->np_qlast[t]; i++) {
mkring = &na->rx_rings[i];
if (nm_kring_pending_off(mkring)) {
mkring->nr_mode = NKR_NETMAP_OFF;
/* we cannot access the parent krings if the parent
* has left netmap mode. This is signaled by a NULL
* pna pointer
*/
if (pna) {
kring = &NMR(pna, t)[i];
netmap_monitor_del(mkring, kring);
}
for (i = 0; i < nma_get_nrings(na, t) + 1; i++) {
mkring = &NMR(na, t)[i];
if (!nm_kring_pending_off(mkring))
continue;
mkring->nr_mode = NKR_NETMAP_OFF;
if (t == NR_TX)
continue;
/* we cannot access the parent krings if the parent
* has left netmap mode. This is signaled by a NULL
* pna pointer
*/
if (pna == NULL)
continue;
for_rx_tx(s) {
if (i > nma_get_nrings(pna, s))
continue;
if (mna->flags & nm_txrx2flag(s)) {
kring = &NMR(pna, s)[i];
netmap_monitor_del(mkring, kring);
}
}
}
@ -417,7 +519,7 @@ netmap_monitor_reg_common(struct netmap_adapter *na, int onoff, int zmon)
static int
netmap_zmon_parent_sync(struct netmap_kring *kring, int flags, enum txrx tx)
{
struct netmap_kring *mkring = kring->monitors[0];
struct netmap_kring *mkring = kring->zmon_list[tx].next;
struct netmap_ring *ring = kring->ring, *mring;
int error = 0;
int rel_slots, free_slots, busy, sent = 0;
@ -434,11 +536,11 @@ netmap_zmon_parent_sync(struct netmap_kring *kring, int flags, enum txrx tx)
/* get the relased slots (rel_slots) */
if (tx == NR_TX) {
beg = kring->nr_hwtail;
beg = kring->nr_hwtail + 1;
error = kring->mon_sync(kring, flags);
if (error)
return error;
end = kring->nr_hwtail;
end = kring->nr_hwtail + 1;
} else { /* NR_RX */
beg = kring->nr_hwcur;
end = kring->rhead;
@ -473,10 +575,10 @@ netmap_zmon_parent_sync(struct netmap_kring *kring, int flags, enum txrx tx)
/* swap min(free_slots, rel_slots) slots */
if (free_slots < rel_slots) {
beg += (rel_slots - free_slots);
if (beg >= kring->nkr_num_slots)
beg -= kring->nkr_num_slots;
rel_slots = free_slots;
}
if (unlikely(beg >= kring->nkr_num_slots))
beg -= kring->nkr_num_slots;
sent = rel_slots;
for ( ; rel_slots; rel_slots--) {
@ -521,7 +623,6 @@ netmap_zmon_parent_sync(struct netmap_kring *kring, int flags, enum txrx tx)
static int
netmap_zmon_parent_txsync(struct netmap_kring *kring, int flags)
{
ND("%s %x", kring->name, flags);
return netmap_zmon_parent_sync(kring, flags, NR_TX);
}
@ -529,11 +630,9 @@ netmap_zmon_parent_txsync(struct netmap_kring *kring, int flags)
static int
netmap_zmon_parent_rxsync(struct netmap_kring *kring, int flags)
{
ND("%s %x", kring->name, flags);
return netmap_zmon_parent_sync(kring, flags, NR_RX);
}
static int
netmap_zmon_reg(struct netmap_adapter *na, int onoff)
{
@ -638,12 +737,17 @@ netmap_monitor_parent_txsync(struct netmap_kring *kring, int flags)
int new_slots;
/* get the new slots */
first_new = kring->nr_hwcur;
new_slots = kring->rhead - first_new;
if (new_slots < 0)
new_slots += kring->nkr_num_slots;
if (new_slots)
netmap_monitor_parent_sync(kring, first_new, new_slots);
if (kring->n_monitors > 0) {
first_new = kring->nr_hwcur;
new_slots = kring->rhead - first_new;
if (new_slots < 0)
new_slots += kring->nkr_num_slots;
if (new_slots)
netmap_monitor_parent_sync(kring, first_new, new_slots);
}
if (kring->zmon_list[NR_TX].next != NULL) {
return netmap_zmon_parent_txsync(kring, flags);
}
return kring->mon_sync(kring, flags);
}
@ -655,16 +759,22 @@ netmap_monitor_parent_rxsync(struct netmap_kring *kring, int flags)
int new_slots, error;
/* get the new slots */
error = kring->mon_sync(kring, flags);
if (kring->zmon_list[NR_RX].next != NULL) {
error = netmap_zmon_parent_rxsync(kring, flags);
} else {
error = kring->mon_sync(kring, flags);
}
if (error)
return error;
first_new = kring->mon_tail;
new_slots = kring->nr_hwtail - first_new;
if (new_slots < 0)
new_slots += kring->nkr_num_slots;
if (new_slots)
netmap_monitor_parent_sync(kring, first_new, new_slots);
kring->mon_tail = kring->nr_hwtail;
if (kring->n_monitors > 0) {
first_new = kring->mon_tail;
new_slots = kring->nr_hwtail - first_new;
if (new_slots < 0)
new_slots += kring->nkr_num_slots;
if (new_slots)
netmap_monitor_parent_sync(kring, first_new, new_slots);
kring->mon_tail = kring->nr_hwtail;
}
return 0;
}
@ -684,12 +794,14 @@ netmap_monitor_parent_notify(struct netmap_kring *kring, int flags)
}
if (kring->n_monitors > 0) {
netmap_monitor_parent_rxsync(kring, NAF_FORCE_READ);
notify = kring->mon_notify;
} else {
}
if (nm_monitor_none(kring)) {
/* we are no longer monitoring this ring, so both
* mon_sync and mon_notify are NULL
*/
notify = kring->nm_notify;
} else {
notify = kring->mon_notify;
}
nm_kr_put(kring);
return notify(kring, flags);
@ -716,24 +828,21 @@ netmap_monitor_dtor(struct netmap_adapter *na)
/* check if nmr is a request for a monitor adapter that we can satisfy */
int
netmap_get_monitor_na(struct nmreq *nmr, struct netmap_adapter **na, int create)
netmap_get_monitor_na(struct nmreq *nmr, struct netmap_adapter **na,
struct netmap_mem_d *nmd, int create)
{
struct nmreq pnmr;
struct netmap_adapter *pna; /* parent adapter */
struct netmap_monitor_adapter *mna;
struct ifnet *ifp = NULL;
int i, error;
enum txrx t;
int error;
int zcopy = (nmr->nr_flags & NR_ZCOPY_MON);
char monsuff[10] = "";
if (zcopy) {
nmr->nr_flags |= (NR_MONITOR_TX | NR_MONITOR_RX);
}
if ((nmr->nr_flags & (NR_MONITOR_TX | NR_MONITOR_RX)) == 0) {
if (nmr->nr_flags & NR_ZCOPY_MON) {
/* the flag makes no sense unless you are
* creating a monitor
*/
return EINVAL;
}
ND("not a monitor");
return 0;
}
@ -741,12 +850,6 @@ netmap_get_monitor_na(struct nmreq *nmr, struct netmap_adapter **na, int create)
ND("flags %x", nmr->nr_flags);
mna = malloc(sizeof(*mna), M_DEVBUF, M_NOWAIT | M_ZERO);
if (mna == NULL) {
D("memory error");
return ENOMEM;
}
/* first, try to find the adapter that we want to monitor
* We use the same nmr, after we have turned off the monitor flags.
* In this way we can potentially monitor everything netmap understands,
@ -754,10 +857,9 @@ netmap_get_monitor_na(struct nmreq *nmr, struct netmap_adapter **na, int create)
*/
memcpy(&pnmr, nmr, sizeof(pnmr));
pnmr.nr_flags &= ~(NR_MONITOR_TX | NR_MONITOR_RX | NR_ZCOPY_MON);
error = netmap_get_na(&pnmr, &pna, &ifp, create);
error = netmap_get_na(&pnmr, &pna, &ifp, nmd, create);
if (error) {
D("parent lookup failed: %d", error);
free(mna, M_DEVBUF);
return error;
}
ND("found parent: %s", pna->name);
@ -772,12 +874,19 @@ netmap_get_monitor_na(struct nmreq *nmr, struct netmap_adapter **na, int create)
goto put_out;
}
/* grab all the rings we need in the parent */
mna = nm_os_malloc(sizeof(*mna));
if (mna == NULL) {
D("memory error");
error = ENOMEM;
goto put_out;
}
mna->priv.np_na = pna;
/* grab all the rings we need in the parent */
error = netmap_interp_ringid(&mna->priv, nmr->nr_ringid, nmr->nr_flags);
if (error) {
D("ringid error");
goto put_out;
goto free_out;
}
if (mna->priv.np_qlast[NR_TX] - mna->priv.np_qfirst[NR_TX] == 1) {
snprintf(monsuff, 10, "-%d", mna->priv.np_qfirst[NR_TX]);
@ -788,57 +897,14 @@ netmap_get_monitor_na(struct nmreq *nmr, struct netmap_adapter **na, int create)
(nmr->nr_flags & NR_MONITOR_RX) ? "r" : "",
(nmr->nr_flags & NR_MONITOR_TX) ? "t" : "");
if (zcopy) {
/* zero copy monitors need exclusive access to the monitored rings */
for_rx_tx(t) {
if (! (nmr->nr_flags & nm_txrx2flag(t)))
continue;
for (i = mna->priv.np_qfirst[t]; i < mna->priv.np_qlast[t]; i++) {
struct netmap_kring *kring = &NMR(pna, t)[i];
if (kring->n_monitors > 0) {
error = EBUSY;
D("ring %s already monitored by %s", kring->name,
kring->monitors[0]->name);
goto put_out;
}
}
}
mna->up.nm_register = netmap_zmon_reg;
mna->up.nm_dtor = netmap_zmon_dtor;
/* to have zero copy, we need to use the same memory allocator
* as the monitored port
*/
mna->up.nm_mem = pna->nm_mem;
mna->up.na_lut = pna->na_lut;
} else {
/* normal monitors are incompatible with zero copy ones */
for_rx_tx(t) {
if (! (nmr->nr_flags & nm_txrx2flag(t)))
continue;
for (i = mna->priv.np_qfirst[t]; i < mna->priv.np_qlast[t]; i++) {
struct netmap_kring *kring = &NMR(pna, t)[i];
if (kring->n_monitors > 0 &&
kring->monitors[0]->na->nm_register == netmap_zmon_reg)
{
error = EBUSY;
D("ring busy");
goto put_out;
}
}
}
mna->up.nm_rxsync = netmap_monitor_rxsync;
mna->up.nm_register = netmap_monitor_reg;
mna->up.nm_dtor = netmap_monitor_dtor;
}
/* the monitor supports the host rings iff the parent does */
mna->up.na_flags = (pna->na_flags & NAF_HOST_RINGS);
mna->up.na_flags |= (pna->na_flags & NAF_HOST_RINGS);
/* a do-nothing txsync: monitors cannot be used to inject packets */
mna->up.nm_txsync = netmap_monitor_txsync;
mna->up.nm_rxsync = netmap_monitor_rxsync;
mna->up.nm_krings_create = netmap_monitor_krings_create;
mna->up.nm_krings_delete = netmap_monitor_krings_delete;
mna->up.num_tx_rings = 1; // XXX we don't need it, but field can't be zero
mna->up.num_tx_rings = 1; // XXX what should we do here with chained zmons?
/* we set the number of our rx_rings to be max(num_rx_rings, num_rx_rings)
* in the parent
*/
@ -855,14 +921,38 @@ netmap_get_monitor_na(struct nmreq *nmr, struct netmap_adapter **na, int create)
mna->up.num_rx_desc = nmr->nr_rx_slots;
nm_bound_var(&mna->up.num_rx_desc, pna->num_rx_desc,
1, NM_MONITOR_MAXSLOTS, NULL);
if (zcopy) {
mna->up.nm_register = netmap_zmon_reg;
mna->up.nm_dtor = netmap_zmon_dtor;
/* to have zero copy, we need to use the same memory allocator
* as the monitored port
*/
mna->up.nm_mem = netmap_mem_get(pna->nm_mem);
/* and the allocator cannot be changed */
mna->up.na_flags |= NAF_MEM_OWNER;
} else {
mna->up.nm_register = netmap_monitor_reg;
mna->up.nm_dtor = netmap_monitor_dtor;
mna->up.nm_mem = netmap_mem_private_new(
mna->up.num_tx_rings,
mna->up.num_tx_desc,
mna->up.num_rx_rings,
mna->up.num_rx_desc,
0, /* extra bufs */
0, /* pipes */
&error);
if (mna->up.nm_mem == NULL)
goto put_out;
}
error = netmap_attach_common(&mna->up);
if (error) {
D("attach_common error");
goto put_out;
goto mem_put_out;
}
/* remember the traffic directions we have to monitor */
mna->flags = (nmr->nr_flags & (NR_MONITOR_TX | NR_MONITOR_RX));
mna->flags = (nmr->nr_flags & (NR_MONITOR_TX | NR_MONITOR_RX | NR_ZCOPY_MON));
*na = &mna->up;
netmap_adapter_get(*na);
@ -876,9 +966,12 @@ netmap_get_monitor_na(struct nmreq *nmr, struct netmap_adapter **na, int create)
return 0;
mem_put_out:
netmap_mem_put(mna->up.nm_mem);
free_out:
nm_os_free(mna);
put_out:
netmap_unget_na(pna, ifp);
free(mna, M_DEVBUF);
return error;
}

93
sys/dev/netmap/netmap_pipe.c
View File

@ -86,7 +86,7 @@ SYSEND;
static int
nm_pipe_alloc(struct netmap_adapter *na, u_int npipes)
{
size_t len;
size_t old_len, len;
struct netmap_pipe_adapter **npa;
if (npipes <= na->na_max_pipes)
@ -96,12 +96,9 @@ nm_pipe_alloc(struct netmap_adapter *na, u_int npipes)
if (npipes < na->na_next_pipe || npipes > NM_MAXPIPES)
return EINVAL;
old_len = sizeof(struct netmap_pipe_adapter *)*na->na_max_pipes;
len = sizeof(struct netmap_pipe_adapter *) * npipes;
#ifndef _WIN32
npa = realloc(na->na_pipes, len, M_DEVBUF, M_NOWAIT | M_ZERO);
#else
npa = realloc(na->na_pipes, len, sizeof(struct netmap_pipe_adapter *)*na->na_max_pipes);
#endif
npa = nm_os_realloc(na->na_pipes, len, old_len);
if (npa == NULL)
return ENOMEM;
@ -120,7 +117,7 @@ netmap_pipe_dealloc(struct netmap_adapter *na)
D("freeing not empty pipe array for %s (%d dangling pipes)!", na->name,
na->na_next_pipe);
}
free(na->na_pipes, M_DEVBUF);
nm_os_free(na->na_pipes);
na->na_pipes = NULL;
na->na_max_pipes = 0;
na->na_next_pipe = 0;
@ -175,7 +172,7 @@ netmap_pipe_remove(struct netmap_adapter *parent, struct netmap_pipe_adapter *na
parent->na_pipes[n] = NULL;
}
static int
int
netmap_pipe_txsync(struct netmap_kring *txkring, int flags)
{
struct netmap_kring *rxkring = txkring->pipe;
@ -240,7 +237,7 @@ netmap_pipe_txsync(struct netmap_kring *txkring, int flags)
return 0;
}
static int
int
netmap_pipe_rxsync(struct netmap_kring *rxkring, int flags)
{
struct netmap_kring *txkring = rxkring->pipe;
@ -289,7 +286,7 @@ netmap_pipe_rxsync(struct netmap_kring *rxkring, int flags)
*/
/* netmap_pipe_krings_delete.
/* netmap_pipe_krings_create.
*
* There are two cases:
*
@ -320,7 +317,7 @@ netmap_pipe_krings_create(struct netmap_adapter *na)
int i;
/* case 1) above */
D("%p: case 1, create both ends", na);
ND("%p: case 1, create both ends", na);
error = netmap_krings_create(na, 0);
if (error)
goto err;
@ -334,8 +331,8 @@ netmap_pipe_krings_create(struct netmap_adapter *na)
for_rx_tx(t) {
enum txrx r = nm_txrx_swap(t); /* swap NR_TX <-> NR_RX */
for (i = 0; i < nma_get_nrings(na, t); i++) {
NMR(na, t)[i].pipe = NMR(&pna->peer->up, r) + i;
NMR(&pna->peer->up, r)[i].pipe = NMR(na, t) + i;
NMR(na, t)[i].pipe = NMR(ona, r) + i;
NMR(ona, r)[i].pipe = NMR(na, t) + i;
}
}
@ -393,11 +390,11 @@ netmap_pipe_reg(struct netmap_adapter *na, int onoff)
ND("%p: onoff %d", na, onoff);
if (onoff) {
for_rx_tx(t) {
for (i = 0; i < nma_get_nrings(na, t) + 1; i++) {
for (i = 0; i < nma_get_nrings(na, t); i++) {
struct netmap_kring *kring = &NMR(na, t)[i];
if (nm_kring_pending_on(kring)) {
/* mark the partner ring as needed */
/* mark the peer ring as needed */
kring->pipe->nr_kflags |= NKR_NEEDRING;
}
}
@ -432,7 +429,9 @@ netmap_pipe_reg(struct netmap_adapter *na, int onoff)
/* mark the peer ring as no longer needed by us
* (it may still be kept if sombody else is using it)
*/
kring->pipe->nr_kflags &= ~NKR_NEEDRING;
if (kring->pipe) {
kring->pipe->nr_kflags &= ~NKR_NEEDRING;
}
}
}
}
@ -441,7 +440,7 @@ netmap_pipe_reg(struct netmap_adapter *na, int onoff)
}
if (na->active_fds) {
D("active_fds %d", na->active_fds);
ND("active_fds %d", na->active_fds);
return 0;
}
@ -494,7 +493,7 @@ netmap_pipe_krings_delete(struct netmap_adapter *na)
return;
}
/* case 1) above */
ND("%p: case 1, deleting everyhing", na);
ND("%p: case 1, deleting everything", na);
netmap_krings_delete(na); /* also zeroes tx_rings etc. */
ona = &pna->peer->up;
if (ona->tx_rings == NULL) {
@ -511,7 +510,7 @@ netmap_pipe_dtor(struct netmap_adapter *na)
{
struct netmap_pipe_adapter *pna =
(struct netmap_pipe_adapter *)na;
ND("%p", na);
ND("%p %p", na, pna->parent_ifp);
if (pna->peer_ref) {
ND("%p: clean up peer", na);
pna->peer_ref = 0;
@ -519,12 +518,15 @@ netmap_pipe_dtor(struct netmap_adapter *na)
}
if (pna->role == NR_REG_PIPE_MASTER)
netmap_pipe_remove(pna->parent, pna);
if (pna->parent_ifp)
if_rele(pna->parent_ifp);
netmap_adapter_put(pna->parent);
pna->parent = NULL;
}
int
netmap_get_pipe_na(struct nmreq *nmr, struct netmap_adapter **na, int create)
netmap_get_pipe_na(struct nmreq *nmr, struct netmap_adapter **na,
struct netmap_mem_d *nmd, int create)
{
struct nmreq pnmr;
struct netmap_adapter *pna; /* parent adapter */
@ -532,7 +534,7 @@ netmap_get_pipe_na(struct nmreq *nmr, struct netmap_adapter **na, int create)
struct ifnet *ifp = NULL;
u_int pipe_id;
int role = nmr->nr_flags & NR_REG_MASK;
int error;
int error, retries = 0;
ND("flags %x", nmr->nr_flags);
@ -547,12 +549,28 @@ netmap_get_pipe_na(struct nmreq *nmr, struct netmap_adapter **na, int create)
memcpy(&pnmr.nr_name, nmr->nr_name, IFNAMSIZ);
/* pass to parent the requested number of pipes */
pnmr.nr_arg1 = nmr->nr_arg1;
error = netmap_get_na(&pnmr, &pna, &ifp, create);
if (error) {
ND("parent lookup failed: %d", error);
return error;
for (;;) {
int create_error;
error = netmap_get_na(&pnmr, &pna, &ifp, nmd, create);
if (!error)
break;
if (error != ENXIO || retries++) {
ND("parent lookup failed: %d", error);
return error;
}
ND("try to create a persistent vale port");
/* create a persistent vale port and try again */
NMG_UNLOCK();
create_error = netmap_vi_create(&pnmr, 1 /* autodelete */);
NMG_LOCK();
if (create_error && create_error != EEXIST) {
if (create_error != EOPNOTSUPP) {
D("failed to create a persistent vale port: %d", create_error);
}
return error;
}
}
ND("found parent: %s", na->name);
if (NETMAP_OWNED_BY_KERN(pna)) {
ND("parent busy");
@ -575,7 +593,7 @@ netmap_get_pipe_na(struct nmreq *nmr, struct netmap_adapter **na, int create)
/* the pipe we have found already holds a ref to the parent,
* so we need to drop the one we got from netmap_get_na()
*/
netmap_adapter_put(pna);
netmap_unget_na(pna, ifp);
goto found;
}
ND("pipe %d not found, create %d", pipe_id, create);
@ -587,7 +605,7 @@ netmap_get_pipe_na(struct nmreq *nmr, struct netmap_adapter **na, int create)
* The endpoint we were asked for holds a reference to
* the other one.
*/
mna = malloc(sizeof(*mna), M_DEVBUF, M_NOWAIT | M_ZERO);
mna = nm_os_malloc(sizeof(*mna));
if (mna == NULL) {
error = ENOMEM;
goto put_out;
@ -597,6 +615,7 @@ netmap_get_pipe_na(struct nmreq *nmr, struct netmap_adapter **na, int create)
mna->id = pipe_id;
mna->role = NR_REG_PIPE_MASTER;
mna->parent = pna;
mna->parent_ifp = ifp;
mna->up.nm_txsync = netmap_pipe_txsync;
mna->up.nm_rxsync = netmap_pipe_rxsync;
@ -604,7 +623,8 @@ netmap_get_pipe_na(struct nmreq *nmr, struct netmap_adapter **na, int create)
mna->up.nm_dtor = netmap_pipe_dtor;
mna->up.nm_krings_create = netmap_pipe_krings_create;
mna->up.nm_krings_delete = netmap_pipe_krings_delete;
mna->up.nm_mem = pna->nm_mem;
mna->up.nm_mem = netmap_mem_get(pna->nm_mem);
mna->up.na_flags |= NAF_MEM_OWNER;
mna->up.na_lut = pna->na_lut;
mna->up.num_tx_rings = 1;
@ -624,13 +644,14 @@ netmap_get_pipe_na(struct nmreq *nmr, struct netmap_adapter **na, int create)
goto free_mna;
/* create the slave */
sna = malloc(sizeof(*mna), M_DEVBUF, M_NOWAIT | M_ZERO);
sna = nm_os_malloc(sizeof(*mna));
if (sna == NULL) {
error = ENOMEM;
goto unregister_mna;
}
/* most fields are the same, copy from master and then fix */
*sna = *mna;
sna->up.nm_mem = netmap_mem_get(mna->up.nm_mem);
snprintf(sna->up.name, sizeof(sna->up.name), "%s}%d", pna->name, pipe_id);
sna->role = NR_REG_PIPE_SLAVE;
error = netmap_attach_common(&sna->up);
@ -645,6 +666,9 @@ netmap_get_pipe_na(struct nmreq *nmr, struct netmap_adapter **na, int create)
* need another one for the other endpoint we created
*/
netmap_adapter_get(pna);
/* likewise for the ifp, if any */
if (ifp)
if_ref(ifp);
if (role == NR_REG_PIPE_MASTER) {
req = mna;
@ -667,19 +691,14 @@ netmap_get_pipe_na(struct nmreq *nmr, struct netmap_adapter **na, int create)
* It will be released by the req destructor
*/
/* drop the ifp reference, if any */
if (ifp) {
if_rele(ifp);
}
return 0;
free_sna:
free(sna, M_DEVBUF);
nm_os_free(sna);
unregister_mna:
netmap_pipe_remove(pna, mna);
free_mna:
free(mna, M_DEVBUF);
nm_os_free(mna);
put_out:
netmap_unget_na(pna, ifp);
return error;

223
sys/dev/netmap/netmap_pt.c
View File

@ -170,7 +170,7 @@ rate_batch_stats_update(struct rate_batch_stats *bf, uint32_t pre_tail,
struct ptnetmap_state {
/* Kthreads. */
struct nm_kthread **kthreads;
struct nm_kctx **kctxs;
/* Shared memory with the guest (TX/RX) */
struct ptnet_ring __user *ptrings;
@ -186,11 +186,11 @@ struct ptnetmap_state {
static inline void
ptnetmap_kring_dump(const char *title, const struct netmap_kring *kring)
{
RD(1, "%s - name: %s hwcur: %d hwtail: %d rhead: %d rcur: %d \
rtail: %d head: %d cur: %d tail: %d",
title, kring->name, kring->nr_hwcur,
kring->nr_hwtail, kring->rhead, kring->rcur, kring->rtail,
kring->ring->head, kring->ring->cur, kring->ring->tail);
D("%s - name: %s hwcur: %d hwtail: %d rhead: %d rcur: %d"
" rtail: %d head: %d cur: %d tail: %d",
title, kring->name, kring->nr_hwcur,
kring->nr_hwtail, kring->rhead, kring->rcur, kring->rtail,
kring->ring->head, kring->ring->cur, kring->ring->tail);
}
/*
@ -225,7 +225,7 @@ ptring_intr_enable(struct ptnet_ring __user *ptring, uint32_t val)
/* Handle TX events: from the guest or from the backend */
static void
ptnetmap_tx_handler(void *data)
ptnetmap_tx_handler(void *data, int is_kthread)
{
struct netmap_kring *kring = data;
struct netmap_pt_host_adapter *pth_na =
@ -234,7 +234,7 @@ ptnetmap_tx_handler(void *data)
struct ptnet_ring __user *ptring;
struct netmap_ring shadow_ring; /* shadow copy of the netmap_ring */
bool more_txspace = false;
struct nm_kthread *kth;
struct nm_kctx *kth;
uint32_t num_slots;
int batch;
IFRATE(uint32_t pre_tail);
@ -259,7 +259,7 @@ ptnetmap_tx_handler(void *data)
/* Get TX ptring pointer from the CSB. */
ptring = ptns->ptrings + kring->ring_id;
kth = ptns->kthreads[kring->ring_id];
kth = ptns->kctxs[kring->ring_id];
num_slots = kring->nkr_num_slots;
shadow_ring.head = kring->rhead;
@ -337,10 +337,10 @@ ptnetmap_tx_handler(void *data)
#ifndef BUSY_WAIT
/* Interrupt the guest if needed. */
if (more_txspace && ptring_intr_enabled(ptring)) {
if (more_txspace && ptring_intr_enabled(ptring) && is_kthread) {
/* Disable guest kick to avoid sending unnecessary kicks */
ptring_intr_enable(ptring, 0);
nm_os_kthread_send_irq(kth);
nm_os_kctx_send_irq(kth);
IFRATE(ptns->rate_ctx.new.htxk++);
more_txspace = false;
}
@ -354,7 +354,9 @@ ptnetmap_tx_handler(void *data)
* go to sleep, waiting for a kick from the guest when new
* new slots are ready for transmission.
*/
usleep_range(1,1);
if (is_kthread) {
usleep_range(1,1);
}
/* Reenable notifications. */
ptring_kick_enable(ptring, 1);
/* Doublecheck. */
@ -383,13 +385,40 @@ ptnetmap_tx_handler(void *data)
nm_kr_put(kring);
if (more_txspace && ptring_intr_enabled(ptring)) {
if (more_txspace && ptring_intr_enabled(ptring) && is_kthread) {
ptring_intr_enable(ptring, 0);
nm_os_kthread_send_irq(kth);
nm_os_kctx_send_irq(kth);
IFRATE(ptns->rate_ctx.new.htxk++);
}
}
/* Called on backend nm_notify when there is no worker thread. */
static void
ptnetmap_tx_nothread_notify(void *data)
{
struct netmap_kring *kring = data;
struct netmap_pt_host_adapter *pth_na =
(struct netmap_pt_host_adapter *)kring->na->na_private;
struct ptnetmap_state *ptns = pth_na->ptns;
if (unlikely(!ptns)) {
D("ERROR ptnetmap state is NULL");
return;
}
if (unlikely(ptns->stopped)) {
D("backend netmap is being stopped");
return;
}
/* We cannot access the CSB here (to check ptring->guest_need_kick),
* unless we switch address space to the one of the guest. For now
* we unconditionally inject an interrupt. */
nm_os_kctx_send_irq(ptns->kctxs[kring->ring_id]);
IFRATE(ptns->rate_ctx.new.htxk++);
ND(1, "%s interrupt", kring->name);
}
/*
* We need RX kicks from the guest when (tail == head-1), where we wait
* for the guest to refill.
@ -405,7 +434,7 @@ ptnetmap_norxslots(struct netmap_kring *kring, uint32_t g_head)
/* Handle RX events: from the guest or from the backend */
static void
ptnetmap_rx_handler(void *data)
ptnetmap_rx_handler(void *data, int is_kthread)
{
struct netmap_kring *kring = data;
struct netmap_pt_host_adapter *pth_na =
@ -413,7 +442,7 @@ ptnetmap_rx_handler(void *data)
struct ptnetmap_state *ptns = pth_na->ptns;
struct ptnet_ring __user *ptring;
struct netmap_ring shadow_ring; /* shadow copy of the netmap_ring */
struct nm_kthread *kth;
struct nm_kctx *kth;
uint32_t num_slots;
int dry_cycles = 0;
bool some_recvd = false;
@ -440,7 +469,7 @@ ptnetmap_rx_handler(void *data)
/* Get RX ptring pointer from the CSB. */
ptring = ptns->ptrings + (pth_na->up.num_tx_rings + kring->ring_id);
kth = ptns->kthreads[pth_na->up.num_tx_rings + kring->ring_id];
kth = ptns->kctxs[pth_na->up.num_tx_rings + kring->ring_id];
num_slots = kring->nkr_num_slots;
shadow_ring.head = kring->rhead;
@ -500,7 +529,7 @@ ptnetmap_rx_handler(void *data)
if (some_recvd && ptring_intr_enabled(ptring)) {
/* Disable guest kick to avoid sending unnecessary kicks */
ptring_intr_enable(ptring, 0);
nm_os_kthread_send_irq(kth);
nm_os_kctx_send_irq(kth);
IFRATE(ptns->rate_ctx.new.hrxk++);
some_recvd = false;
}
@ -549,7 +578,7 @@ ptnetmap_rx_handler(void *data)
/* Interrupt the guest if needed. */
if (some_recvd && ptring_intr_enabled(ptring)) {
ptring_intr_enable(ptring, 0);
nm_os_kthread_send_irq(kth);
nm_os_kctx_send_irq(kth);
IFRATE(ptns->rate_ctx.new.hrxk++);
}
}
@ -597,14 +626,14 @@ ptnetmap_print_configuration(struct ptnetmap_cfg *cfg)
static int
ptnetmap_kring_snapshot(struct netmap_kring *kring, struct ptnet_ring __user *ptring)
{
if(CSB_WRITE(ptring, head, kring->rhead))
if (CSB_WRITE(ptring, head, kring->rhead))
goto err;
if(CSB_WRITE(ptring, cur, kring->rcur))
if (CSB_WRITE(ptring, cur, kring->rcur))
goto err;
if(CSB_WRITE(ptring, hwcur, kring->nr_hwcur))
if (CSB_WRITE(ptring, hwcur, kring->nr_hwcur))
goto err;
if(CSB_WRITE(ptring, hwtail, NM_ACCESS_ONCE(kring->nr_hwtail)))
if (CSB_WRITE(ptring, hwtail, NM_ACCESS_ONCE(kring->nr_hwtail)))
goto err;
DBG(ptnetmap_kring_dump("ptnetmap_kring_snapshot", kring);)
@ -643,15 +672,15 @@ ptnetmap_krings_snapshot(struct netmap_pt_host_adapter *pth_na)
}
/*
* Functions to create, start and stop the kthreads
* Functions to create kernel contexts, and start/stop the workers.
*/
static int
ptnetmap_create_kthreads(struct netmap_pt_host_adapter *pth_na,
struct ptnetmap_cfg *cfg)
ptnetmap_create_kctxs(struct netmap_pt_host_adapter *pth_na,
struct ptnetmap_cfg *cfg, int use_tx_kthreads)
{
struct ptnetmap_state *ptns = pth_na->ptns;
struct nm_kthread_cfg nmk_cfg;
struct nm_kctx_cfg nmk_cfg;
unsigned int num_rings;
uint8_t *cfg_entries = (uint8_t *)(cfg + 1);
int k;
@ -665,13 +694,16 @@ ptnetmap_create_kthreads(struct netmap_pt_host_adapter *pth_na,
nmk_cfg.type = k;
if (k < pth_na->up.num_tx_rings) {
nmk_cfg.worker_fn = ptnetmap_tx_handler;
nmk_cfg.use_kthread = use_tx_kthreads;
nmk_cfg.notify_fn = ptnetmap_tx_nothread_notify;
} else {
nmk_cfg.worker_fn = ptnetmap_rx_handler;
nmk_cfg.use_kthread = 1;
}
ptns->kthreads[k] = nm_os_kthread_create(&nmk_cfg,
ptns->kctxs[k] = nm_os_kctx_create(&nmk_cfg,
cfg->cfgtype, cfg_entries + k * cfg->entry_size);
if (ptns->kthreads[k] == NULL) {
if (ptns->kctxs[k] == NULL) {
goto err;
}
}
@ -679,16 +711,16 @@ ptnetmap_create_kthreads(struct netmap_pt_host_adapter *pth_na,
return 0;
err:
for (k = 0; k < num_rings; k++) {
if (ptns->kthreads[k]) {
nm_os_kthread_delete(ptns->kthreads[k]);
ptns->kthreads[k] = NULL;
if (ptns->kctxs[k]) {
nm_os_kctx_destroy(ptns->kctxs[k]);
ptns->kctxs[k] = NULL;
}
}
return EFAULT;
}
static int
ptnetmap_start_kthreads(struct netmap_pt_host_adapter *pth_na)
ptnetmap_start_kctx_workers(struct netmap_pt_host_adapter *pth_na)
{
struct ptnetmap_state *ptns = pth_na->ptns;
int num_rings;
@ -705,8 +737,8 @@ ptnetmap_start_kthreads(struct netmap_pt_host_adapter *pth_na)
num_rings = ptns->pth_na->up.num_tx_rings +
ptns->pth_na->up.num_rx_rings;
for (k = 0; k < num_rings; k++) {
//nm_os_kthread_set_affinity(ptns->kthreads[k], xxx);
error = nm_os_kthread_start(ptns->kthreads[k]);
//nm_os_kctx_worker_setaff(ptns->kctxs[k], xxx);
error = nm_os_kctx_worker_start(ptns->kctxs[k]);
if (error) {
return error;
}
@ -716,7 +748,7 @@ ptnetmap_start_kthreads(struct netmap_pt_host_adapter *pth_na)
}
static void
ptnetmap_stop_kthreads(struct netmap_pt_host_adapter *pth_na)
ptnetmap_stop_kctx_workers(struct netmap_pt_host_adapter *pth_na)
{
struct ptnetmap_state *ptns = pth_na->ptns;
int num_rings;
@ -732,7 +764,7 @@ ptnetmap_stop_kthreads(struct netmap_pt_host_adapter *pth_na)
num_rings = ptns->pth_na->up.num_tx_rings +
ptns->pth_na->up.num_rx_rings;
for (k = 0; k < num_rings; k++) {
nm_os_kthread_stop(ptns->kthreads[k]);
nm_os_kctx_worker_stop(ptns->kctxs[k]);
}
}
@ -750,14 +782,14 @@ ptnetmap_read_cfg(struct nmreq *nmr)
}
cfglen = sizeof(tmp) + tmp.num_rings * tmp.entry_size;
cfg = malloc(cfglen, M_DEVBUF, M_NOWAIT | M_ZERO);
cfg = nm_os_malloc(cfglen);
if (!cfg) {
return NULL;
}
if (copyin((const void *)*nmr_ptncfg, cfg, cfglen)) {
D("Full copyin() failed");
free(cfg, M_DEVBUF);
nm_os_free(cfg);
return NULL;
}
@ -772,6 +804,7 @@ static int
ptnetmap_create(struct netmap_pt_host_adapter *pth_na,
struct ptnetmap_cfg *cfg)
{
int use_tx_kthreads = ptnetmap_tx_workers; /* snapshot */
struct ptnetmap_state *ptns;
unsigned int num_rings;
int ret, i;
@ -790,13 +823,18 @@ ptnetmap_create(struct netmap_pt_host_adapter *pth_na,
return EINVAL;
}
ptns = malloc(sizeof(*ptns) + num_rings * sizeof(*ptns->kthreads),
M_DEVBUF, M_NOWAIT | M_ZERO);
if (!use_tx_kthreads && na_is_generic(pth_na->parent)) {
D("ERROR ptnetmap direct transmission not supported with "
"passed-through emulated adapters");
return EOPNOTSUPP;
}
ptns = nm_os_malloc(sizeof(*ptns) + num_rings * sizeof(*ptns->kctxs));
if (!ptns) {
return ENOMEM;
}
ptns->kthreads = (struct nm_kthread **)(ptns + 1);
ptns->kctxs = (struct nm_kctx **)(ptns + 1);
ptns->stopped = true;
/* Cross-link data structures. */
@ -808,9 +846,9 @@ ptnetmap_create(struct netmap_pt_host_adapter *pth_na,
DBG(ptnetmap_print_configuration(cfg));
/* Create kthreads */
if ((ret = ptnetmap_create_kthreads(pth_na, cfg))) {
D("ERROR ptnetmap_create_kthreads()");
/* Create kernel contexts. */
if ((ret = ptnetmap_create_kctxs(pth_na, cfg, use_tx_kthreads))) {
D("ERROR ptnetmap_create_kctxs()");
goto err;
}
/* Copy krings state into the CSB for the guest initialization */
@ -819,10 +857,17 @@ ptnetmap_create(struct netmap_pt_host_adapter *pth_na,
goto err;
}
/* Overwrite parent nm_notify krings callback. */
/* Overwrite parent nm_notify krings callback, and
* clear NAF_BDG_MAYSLEEP if needed. */
pth_na->parent->na_private = pth_na;
pth_na->parent_nm_notify = pth_na->parent->nm_notify;
pth_na->parent->nm_notify = nm_unused_notify;
pth_na->parent_na_flags = pth_na->parent->na_flags;
if (!use_tx_kthreads) {
/* VALE port txsync is executed under spinlock on Linux, so
* we need to make sure the bridge cannot sleep. */
pth_na->parent->na_flags &= ~NAF_BDG_MAYSLEEP;
}
for (i = 0; i < pth_na->parent->num_rx_rings; i++) {
pth_na->up.rx_rings[i].save_notify =
@ -849,7 +894,7 @@ ptnetmap_create(struct netmap_pt_host_adapter *pth_na,
err:
pth_na->ptns = NULL;
free(ptns, M_DEVBUF);
nm_os_free(ptns);
return ret;
}
@ -870,6 +915,7 @@ ptnetmap_delete(struct netmap_pt_host_adapter *pth_na)
/* Restore parent adapter callbacks. */
pth_na->parent->nm_notify = pth_na->parent_nm_notify;
pth_na->parent->na_private = NULL;
pth_na->parent->na_flags = pth_na->parent_na_flags;
for (i = 0; i < pth_na->parent->num_rx_rings; i++) {
pth_na->up.rx_rings[i].nm_notify =
@ -882,17 +928,17 @@ ptnetmap_delete(struct netmap_pt_host_adapter *pth_na)
pth_na->up.tx_rings[i].save_notify = NULL;
}
/* Delete kthreads. */
/* Destroy kernel contexts. */
num_rings = ptns->pth_na->up.num_tx_rings +
ptns->pth_na->up.num_rx_rings;
for (i = 0; i < num_rings; i++) {
nm_os_kthread_delete(ptns->kthreads[i]);
ptns->kthreads[i] = NULL;
nm_os_kctx_destroy(ptns->kctxs[i]);
ptns->kctxs[i] = NULL;
}
IFRATE(del_timer(&ptns->rate_ctx.timer));
free(ptns, M_DEVBUF);
nm_os_free(ptns);
pth_na->ptns = NULL;
@ -932,21 +978,21 @@ ptnetmap_ctl(struct nmreq *nmr, struct netmap_adapter *na)
cfg = ptnetmap_read_cfg(nmr);
if (!cfg)
break;
/* Create ptnetmap state (kthreads, ...) and switch parent
/* Create ptnetmap state (kctxs, ...) and switch parent
* adapter to ptnetmap mode. */
error = ptnetmap_create(pth_na, cfg);
free(cfg, M_DEVBUF);
nm_os_free(cfg);
if (error)
break;
/* Start kthreads. */
error = ptnetmap_start_kthreads(pth_na);
error = ptnetmap_start_kctx_workers(pth_na);
if (error)
ptnetmap_delete(pth_na);
break;
case NETMAP_PT_HOST_DELETE:
/* Stop kthreads. */
ptnetmap_stop_kthreads(pth_na);
ptnetmap_stop_kctx_workers(pth_na);
/* Switch parent adapter back to normal mode and destroy
* ptnetmap state (kthreads, ...). */
ptnetmap_delete(pth_na);
@ -994,7 +1040,7 @@ nm_pt_host_notify(struct netmap_kring *kring, int flags)
ND(1, "RX backend irq");
IFRATE(ptns->rate_ctx.new.brxwu++);
}
nm_os_kthread_wakeup_worker(ptns->kthreads[k]);
nm_os_kctx_worker_wakeup(ptns->kctxs[k]);
return NM_IRQ_COMPLETED;
}
@ -1136,7 +1182,7 @@ nm_pt_host_dtor(struct netmap_adapter *na)
/* The equivalent of NETMAP_PT_HOST_DELETE if the hypervisor
* didn't do it. */
ptnetmap_stop_kthreads(pth_na);
ptnetmap_stop_kctx_workers(pth_na);
ptnetmap_delete(pth_na);
parent->na_flags &= ~NAF_BUSY;
@ -1147,7 +1193,8 @@ nm_pt_host_dtor(struct netmap_adapter *na)
/* check if nmr is a request for a ptnetmap adapter that we can satisfy */
int
netmap_get_pt_host_na(struct nmreq *nmr, struct netmap_adapter **na, int create)
netmap_get_pt_host_na(struct nmreq *nmr, struct netmap_adapter **na,
struct netmap_mem_d *nmd, int create)
{
struct nmreq parent_nmr;
struct netmap_adapter *parent; /* target adapter */
@ -1162,7 +1209,7 @@ netmap_get_pt_host_na(struct nmreq *nmr, struct netmap_adapter **na, int create)
D("Requesting a ptnetmap host adapter");
pth_na = malloc(sizeof(*pth_na), M_DEVBUF, M_NOWAIT | M_ZERO);
pth_na = nm_os_malloc(sizeof(*pth_na));
if (pth_na == NULL) {
D("ERROR malloc");
return ENOMEM;
@ -1174,7 +1221,7 @@ netmap_get_pt_host_na(struct nmreq *nmr, struct netmap_adapter **na, int create)
*/
memcpy(&parent_nmr, nmr, sizeof(parent_nmr));
parent_nmr.nr_flags &= ~(NR_PTNETMAP_HOST);
error = netmap_get_na(&parent_nmr, &parent, &ifp, create);
error = netmap_get_na(&parent_nmr, &parent, &ifp, nmd, create);
if (error) {
D("parent lookup failed: %d", error);
goto put_out_noputparent;
@ -1216,7 +1263,7 @@ netmap_get_pt_host_na(struct nmreq *nmr, struct netmap_adapter **na, int create)
* directly. */
pth_na->up.nm_notify = nm_unused_notify;
pth_na->up.nm_mem = parent->nm_mem;
pth_na->up.nm_mem = netmap_mem_get(parent->nm_mem);
pth_na->up.na_flags |= NAF_HOST_RINGS;
@ -1248,7 +1295,7 @@ netmap_get_pt_host_na(struct nmreq *nmr, struct netmap_adapter **na, int create)
if (ifp)
if_rele(ifp);
put_out_noputparent:
free(pth_na, M_DEVBUF);
nm_os_free(pth_na);
return error;
}
#endif /* WITH_PTNETMAP_HOST */
@ -1290,8 +1337,8 @@ netmap_pt_guest_txsync(struct ptnet_ring *ptring, struct netmap_kring *kring,
ptnetmap_guest_write_kring_csb(ptring, kring->rcur, kring->rhead);
/* Ask for a kick from a guest to the host if needed. */
if ((kring->rhead != kring->nr_hwcur &&
NM_ACCESS_ONCE(ptring->host_need_kick)) ||
if (((kring->rhead != kring->nr_hwcur || nm_kr_txempty(kring))
&& NM_ACCESS_ONCE(ptring->host_need_kick)) ||
(flags & NAF_FORCE_RECLAIM)) {
ptring->sync_flags = flags;
notify = true;
@ -1320,9 +1367,9 @@ netmap_pt_guest_txsync(struct ptnet_ring *ptring, struct netmap_kring *kring,
}
}
ND(1, "TX - CSB: head:%u cur:%u hwtail:%u - KRING: head:%u cur:%u tail: %u",
ptring->head, ptring->cur, ptring->hwtail,
kring->rhead, kring->rcur, kring->nr_hwtail);
ND(1, "%s CSB(head:%u cur:%u hwtail:%u) KRING(head:%u cur:%u tail:%u)",
kring->name, ptring->head, ptring->cur, ptring->hwtail,
kring->rhead, kring->rcur, kring->nr_hwtail);
return notify;
}
@ -1385,9 +1432,9 @@ netmap_pt_guest_rxsync(struct ptnet_ring *ptring, struct netmap_kring *kring,
}
}
ND(1, "RX - CSB: head:%u cur:%u hwtail:%u - KRING: head:%u cur:%u",
ptring->head, ptring->cur, ptring->hwtail,
kring->rhead, kring->rcur);
ND(1, "%s CSB(head:%u cur:%u hwtail:%u) KRING(head:%u cur:%u tail:%u)",
kring->name, ptring->head, ptring->cur, ptring->hwtail,
kring->rhead, kring->rcur, kring->nr_hwtail);
return notify;
}
@ -1445,9 +1492,43 @@ ptnet_nm_dtor(struct netmap_adapter *na)
struct netmap_pt_guest_adapter *ptna =
(struct netmap_pt_guest_adapter *)na;
netmap_mem_put(ptna->dr.up.nm_mem);
netmap_mem_put(ptna->dr.up.nm_mem); // XXX is this needed?
memset(&ptna->dr, 0, sizeof(ptna->dr));
netmap_mem_pt_guest_ifp_del(na->nm_mem, na->ifp);
}
int
netmap_pt_guest_attach(struct netmap_adapter *arg, void *csb,
unsigned int nifp_offset, unsigned int memid)
{
struct netmap_pt_guest_adapter *ptna;
struct ifnet *ifp = arg ? arg->ifp : NULL;
int error;
/* get allocator */
arg->nm_mem = netmap_mem_pt_guest_new(ifp, nifp_offset, memid);
if (arg->nm_mem == NULL)
return ENOMEM;
arg->na_flags |= NAF_MEM_OWNER;
error = netmap_attach_ext(arg, sizeof(struct netmap_pt_guest_adapter));
if (error)
return error;
/* get the netmap_pt_guest_adapter */
ptna = (struct netmap_pt_guest_adapter *) NA(ifp);
ptna->csb = csb;
/* Initialize a separate pass-through netmap adapter that is going to
* be used by the ptnet driver only, and so never exposed to netmap
* applications. We only need a subset of the available fields. */
memset(&ptna->dr, 0, sizeof(ptna->dr));
ptna->dr.up.ifp = ifp;
ptna->dr.up.nm_mem = netmap_mem_get(ptna->hwup.up.nm_mem);
ptna->dr.up.nm_config = ptna->hwup.up.nm_config;
ptna->backend_regifs = 0;
return 0;
}
#endif /* WITH_PTNETMAP_GUEST */

231
sys/dev/netmap/netmap_vale.c
View File

@ -161,7 +161,8 @@ SYSCTL_DECL(_dev_netmap);
SYSCTL_INT(_dev_netmap, OID_AUTO, bridge_batch, CTLFLAG_RW, &bridge_batch, 0 , "");
SYSEND;
static int netmap_vp_create(struct nmreq *, struct ifnet *, struct netmap_vp_adapter **);
static int netmap_vp_create(struct nmreq *, struct ifnet *,
struct netmap_mem_d *nmd, struct netmap_vp_adapter **);
static int netmap_vp_reg(struct netmap_adapter *na, int onoff);
static int netmap_bwrap_reg(struct netmap_adapter *, int onoff);
@ -393,7 +394,7 @@ nm_free_bdgfwd(struct netmap_adapter *na)
kring = na->tx_rings;
for (i = 0; i < nrings; i++) {
if (kring[i].nkr_ft) {
free(kring[i].nkr_ft, M_DEVBUF);
nm_os_free(kring[i].nkr_ft);
kring[i].nkr_ft = NULL; /* protect from freeing twice */
}
}
@ -423,7 +424,7 @@ nm_alloc_bdgfwd(struct netmap_adapter *na)
struct nm_bdg_q *dstq;
int j;
ft = malloc(l, M_DEVBUF, M_NOWAIT | M_ZERO);
ft = nm_os_malloc(l);
if (!ft) {
nm_free_bdgfwd(na);
return ENOMEM;
@ -538,6 +539,13 @@ netmap_vp_dtor(struct netmap_adapter *na)
if (b) {
netmap_bdg_detach_common(b, vpna->bdg_port, -1);
}
if (vpna->autodelete && na->ifp != NULL) {
ND("releasing %s", na->ifp->if_xname);
NMG_UNLOCK();
nm_os_vi_detach(na->ifp);
NMG_LOCK();
}
}
/* remove a persistent VALE port from the system */
@ -545,6 +553,7 @@ static int
nm_vi_destroy(const char *name)
{
struct ifnet *ifp;
struct netmap_vp_adapter *vpna;
int error;
ifp = ifunit_ref(name);
@ -557,18 +566,29 @@ nm_vi_destroy(const char *name)
goto err;
}
if (NA(ifp)->na_refcount > 1) {
vpna = (struct netmap_vp_adapter *)NA(ifp);
/* we can only destroy ports that were created via NETMAP_BDG_NEWIF */
if (vpna->autodelete) {
error = EINVAL;
goto err;
}
/* also make sure that nobody is using the inferface */
if (NETMAP_OWNED_BY_ANY(&vpna->up) ||
vpna->up.na_refcount > 1 /* any ref besides the one in nm_vi_create()? */) {
error = EBUSY;
goto err;
}
NMG_UNLOCK();
D("destroying a persistent vale interface %s", ifp->if_xname);
/* Linux requires all the references are released
* before unregister
*/
if_rele(ifp);
netmap_detach(ifp);
if_rele(ifp);
nm_os_vi_detach(ifp);
return 0;
@ -578,15 +598,26 @@ nm_vi_destroy(const char *name)
return error;
}
static int
nm_update_info(struct nmreq *nmr, struct netmap_adapter *na)
{
nmr->nr_rx_rings = na->num_rx_rings;
nmr->nr_tx_rings = na->num_tx_rings;
nmr->nr_rx_slots = na->num_rx_desc;
nmr->nr_tx_slots = na->num_tx_desc;
return netmap_mem_get_info(na->nm_mem, &nmr->nr_memsize, NULL, &nmr->nr_arg2);
}
/*
* Create a virtual interface registered to the system.
* The interface will be attached to a bridge later.
*/
static int
nm_vi_create(struct nmreq *nmr)
int
netmap_vi_create(struct nmreq *nmr, int autodelete)
{
struct ifnet *ifp;
struct netmap_vp_adapter *vpna;
struct netmap_mem_d *nmd = NULL;
int error;
/* don't include VALE prefix */
@ -594,28 +625,64 @@ nm_vi_create(struct nmreq *nmr)
return EINVAL;
ifp = ifunit_ref(nmr->nr_name);
if (ifp) { /* already exist, cannot create new one */
error = EEXIST;
NMG_LOCK();
if (NM_NA_VALID(ifp)) {
int update_err = nm_update_info(nmr, NA(ifp));
if (update_err)
error = update_err;
}
NMG_UNLOCK();
if_rele(ifp);
return EEXIST;
return error;
}
error = nm_os_vi_persist(nmr->nr_name, &ifp);
if (error)
return error;
NMG_LOCK();
if (nmr->nr_arg2) {
nmd = netmap_mem_find(nmr->nr_arg2);
if (nmd == NULL) {
error = EINVAL;
goto err_1;
}
}
/* netmap_vp_create creates a struct netmap_vp_adapter */
error = netmap_vp_create(nmr, ifp, &vpna);
error = netmap_vp_create(nmr, ifp, nmd, &vpna);
if (error) {
D("error %d", error);
nm_os_vi_detach(ifp);
return error;
goto err_1;
}
/* persist-specific routines */
vpna->up.nm_bdg_ctl = netmap_vp_bdg_ctl;
netmap_adapter_get(&vpna->up);
if (!autodelete) {
netmap_adapter_get(&vpna->up);
} else {
vpna->autodelete = 1;
}
NM_ATTACH_NA(ifp, &vpna->up);
/* return the updated info */
error = nm_update_info(nmr, &vpna->up);
if (error) {
goto err_2;
}
D("returning nr_arg2 %d", nmr->nr_arg2);
if (nmd)
netmap_mem_put(nmd);
NMG_UNLOCK();
D("created %s", ifp->if_xname);
return 0;
err_2:
netmap_detach(ifp);
err_1:
if (nmd)
netmap_mem_put(nmd);
NMG_UNLOCK();
nm_os_vi_detach(ifp);
return error;
}
/* Try to get a reference to a netmap adapter attached to a VALE switch.
@ -628,11 +695,12 @@ nm_vi_create(struct nmreq *nmr)
* (*na != NULL && return == 0).
*/
int
netmap_get_bdg_na(struct nmreq *nmr, struct netmap_adapter **na, int create)
netmap_get_bdg_na(struct nmreq *nmr, struct netmap_adapter **na,
struct netmap_mem_d *nmd, int create)
{
char *nr_name = nmr->nr_name;
const char *ifname;
struct ifnet *ifp;
struct ifnet *ifp = NULL;
int error = 0;
struct netmap_vp_adapter *vpna, *hostna = NULL;
struct nm_bridge *b;
@ -702,15 +770,15 @@ netmap_get_bdg_na(struct nmreq *nmr, struct netmap_adapter **na, int create)
*/
if (nmr->nr_cmd) {
/* nr_cmd must be 0 for a virtual port */
return EINVAL;
error = EINVAL;
goto out;
}
/* bdg_netmap_attach creates a struct netmap_adapter */
error = netmap_vp_create(nmr, NULL, &vpna);
error = netmap_vp_create(nmr, NULL, nmd, &vpna);
if (error) {
D("error %d", error);
free(ifp, M_DEVBUF);
return error;
goto out;
}
/* shortcut - we can skip get_hw_na(),
* ownership check and nm_bdg_attach()
@ -718,7 +786,7 @@ netmap_get_bdg_na(struct nmreq *nmr, struct netmap_adapter **na, int create)
} else {
struct netmap_adapter *hw;
error = netmap_get_hw_na(ifp, &hw);
error = netmap_get_hw_na(ifp, nmd, &hw);
if (error || hw == NULL)
goto out;
@ -751,10 +819,10 @@ netmap_get_bdg_na(struct nmreq *nmr, struct netmap_adapter **na, int create)
BDG_WUNLOCK(b);
*na = &vpna->up;
netmap_adapter_get(*na);
return 0;
out:
if_rele(ifp);
if (ifp)
if_rele(ifp);
return error;
}
@ -765,11 +833,20 @@ static int
nm_bdg_ctl_attach(struct nmreq *nmr)
{
struct netmap_adapter *na;
struct netmap_mem_d *nmd = NULL;
int error;
NMG_LOCK();
error = netmap_get_bdg_na(nmr, &na, 1 /* create if not exists */);
if (nmr->nr_arg2) {
nmd = netmap_mem_find(nmr->nr_arg2);
if (nmd == NULL) {
error = EINVAL;
goto unlock_exit;
}
}
error = netmap_get_bdg_na(nmr, &na, nmd, 1 /* create if not exists */);
if (error) /* no device */
goto unlock_exit;
@ -816,7 +893,7 @@ nm_bdg_ctl_detach(struct nmreq *nmr)
int error;
NMG_LOCK();
error = netmap_get_bdg_na(nmr, &na, 0 /* don't create */);
error = netmap_get_bdg_na(nmr, &na, NULL, 0 /* don't create */);
if (error) { /* no device, or another bridge or user owns the device */
goto unlock_exit;
}
@ -848,7 +925,7 @@ nm_bdg_ctl_detach(struct nmreq *nmr)
struct nm_bdg_polling_state;
struct
nm_bdg_kthread {
struct nm_kthread *nmk;
struct nm_kctx *nmk;
u_int qfirst;
u_int qlast;
struct nm_bdg_polling_state *bps;
@ -867,7 +944,7 @@ struct nm_bdg_polling_state {
};
static void
netmap_bwrap_polling(void *data)
netmap_bwrap_polling(void *data, int is_kthread)
{
struct nm_bdg_kthread *nbk = data;
struct netmap_bwrap_adapter *bna;
@ -890,16 +967,16 @@ netmap_bwrap_polling(void *data)
static int
nm_bdg_create_kthreads(struct nm_bdg_polling_state *bps)
{
struct nm_kthread_cfg kcfg;
struct nm_kctx_cfg kcfg;
int i, j;
bps->kthreads = malloc(sizeof(struct nm_bdg_kthread) * bps->ncpus,
M_DEVBUF, M_NOWAIT | M_ZERO);
bps->kthreads = nm_os_malloc(sizeof(struct nm_bdg_kthread) * bps->ncpus);
if (bps->kthreads == NULL)
return ENOMEM;
bzero(&kcfg, sizeof(kcfg));
kcfg.worker_fn = netmap_bwrap_polling;
kcfg.use_kthread = 1;
for (i = 0; i < bps->ncpus; i++) {
struct nm_bdg_kthread *t = bps->kthreads + i;
int all = (bps->ncpus == 1 && bps->reg == NR_REG_ALL_NIC);
@ -913,24 +990,24 @@ nm_bdg_create_kthreads(struct nm_bdg_polling_state *bps)
kcfg.type = i;
kcfg.worker_private = t;
t->nmk = nm_os_kthread_create(&kcfg, 0, NULL);
t->nmk = nm_os_kctx_create(&kcfg, 0, NULL);
if (t->nmk == NULL) {
goto cleanup;
}
nm_os_kthread_set_affinity(t->nmk, affinity);
nm_os_kctx_worker_setaff(t->nmk, affinity);
}
return 0;
cleanup:
for (j = 0; j < i; j++) {
struct nm_bdg_kthread *t = bps->kthreads + i;
nm_os_kthread_delete(t->nmk);
nm_os_kctx_destroy(t->nmk);
}
free(bps->kthreads, M_DEVBUF);
nm_os_free(bps->kthreads);
return EFAULT;
}
/* a version of ptnetmap_start_kthreads() */
/* A variant of ptnetmap_start_kthreads() */
static int
nm_bdg_polling_start_kthreads(struct nm_bdg_polling_state *bps)
{
@ -944,7 +1021,7 @@ nm_bdg_polling_start_kthreads(struct nm_bdg_polling_state *bps)
for (i = 0; i < bps->ncpus; i++) {
struct nm_bdg_kthread *t = bps->kthreads + i;
error = nm_os_kthread_start(t->nmk);
error = nm_os_kctx_worker_start(t->nmk);
if (error) {
D("error in nm_kthread_start()");
goto cleanup;
@ -955,7 +1032,7 @@ nm_bdg_polling_start_kthreads(struct nm_bdg_polling_state *bps)
cleanup:
for (j = 0; j < i; j++) {
struct nm_bdg_kthread *t = bps->kthreads + i;
nm_os_kthread_stop(t->nmk);
nm_os_kctx_worker_stop(t->nmk);
}
bps->stopped = true;
return error;
@ -971,8 +1048,8 @@ nm_bdg_polling_stop_delete_kthreads(struct nm_bdg_polling_state *bps)
for (i = 0; i < bps->ncpus; i++) {
struct nm_bdg_kthread *t = bps->kthreads + i;
nm_os_kthread_stop(t->nmk);
nm_os_kthread_delete(t->nmk);
nm_os_kctx_worker_stop(t->nmk);
nm_os_kctx_destroy(t->nmk);
}
bps->stopped = true;
}
@ -1050,19 +1127,19 @@ nm_bdg_ctl_polling_start(struct nmreq *nmr, struct netmap_adapter *na)
return EFAULT;
}
bps = malloc(sizeof(*bps), M_DEVBUF, M_NOWAIT | M_ZERO);
bps = nm_os_malloc(sizeof(*bps));
if (!bps)
return ENOMEM;
bps->configured = false;
bps->stopped = true;
if (get_polling_cfg(nmr, na, bps)) {
free(bps, M_DEVBUF);
nm_os_free(bps);
return EINVAL;
}
if (nm_bdg_create_kthreads(bps)) {
free(bps, M_DEVBUF);
nm_os_free(bps);
return EFAULT;
}
@ -1077,8 +1154,8 @@ nm_bdg_ctl_polling_start(struct nmreq *nmr, struct netmap_adapter *na)
error = nm_bdg_polling_start_kthreads(bps);
if (error) {
D("ERROR nm_bdg_polling_start_kthread()");
free(bps->kthreads, M_DEVBUF);
free(bps, M_DEVBUF);
nm_os_free(bps->kthreads);
nm_os_free(bps);
bna->na_polling_state = NULL;
if (bna->hwna->nm_intr)
bna->hwna->nm_intr(bna->hwna, 1);
@ -1099,7 +1176,7 @@ nm_bdg_ctl_polling_stop(struct nmreq *nmr, struct netmap_adapter *na)
bps = bna->na_polling_state;
nm_bdg_polling_stop_delete_kthreads(bna->na_polling_state);
bps->configured = false;
free(bps, M_DEVBUF);
nm_os_free(bps);
bna->na_polling_state = NULL;
/* reenable interrupt */
if (bna->hwna->nm_intr)
@ -1130,7 +1207,7 @@ netmap_bdg_ctl(struct nmreq *nmr, struct netmap_bdg_ops *bdg_ops)
switch (cmd) {
case NETMAP_BDG_NEWIF:
error = nm_vi_create(nmr);
error = netmap_vi_create(nmr, 0 /* no autodelete */);
break;
case NETMAP_BDG_DELIF:
@ -1193,18 +1270,19 @@ netmap_bdg_ctl(struct nmreq *nmr, struct netmap_bdg_ops *bdg_ops)
NMG_LOCK();
for (error = ENOENT; i < NM_BRIDGES; i++) {
b = bridges + i;
if (j >= b->bdg_active_ports) {
j = 0; /* following bridges scan from 0 */
continue;
for ( ; j < NM_BDG_MAXPORTS; j++) {
if (b->bdg_ports[j] == NULL)
continue;
vpna = b->bdg_ports[j];
strncpy(name, vpna->up.name, (size_t)IFNAMSIZ);
error = 0;
goto out;
}
nmr->nr_arg1 = i;
nmr->nr_arg2 = j;
j = b->bdg_port_index[j];
vpna = b->bdg_ports[j];
strncpy(name, vpna->up.name, (size_t)IFNAMSIZ);
error = 0;
break;
j = 0; /* following bridges scan from 0 */
}
out:
nmr->nr_arg1 = i;
nmr->nr_arg2 = j;
NMG_UNLOCK();
}
break;
@ -1238,7 +1316,7 @@ netmap_bdg_ctl(struct nmreq *nmr, struct netmap_bdg_ops *bdg_ops)
break;
}
NMG_LOCK();
error = netmap_get_bdg_na(nmr, &na, 0);
error = netmap_get_bdg_na(nmr, &na, NULL, 0);
if (na && !error) {
vpna = (struct netmap_vp_adapter *)na;
na->virt_hdr_len = nmr->nr_arg1;
@ -1256,7 +1334,7 @@ netmap_bdg_ctl(struct nmreq *nmr, struct netmap_bdg_ops *bdg_ops)
case NETMAP_BDG_POLLING_ON:
case NETMAP_BDG_POLLING_OFF:
NMG_LOCK();
error = netmap_get_bdg_na(nmr, &na, 0);
error = netmap_get_bdg_na(nmr, &na, NULL, 0);
if (na && !error) {
if (!nm_is_bwrap(na)) {
error = EOPNOTSUPP;
@ -1384,7 +1462,7 @@ nm_bdg_preflush(struct netmap_kring *kring, u_int end)
if (na->up.na_flags & NAF_BDG_MAYSLEEP)
BDG_RLOCK(b);
else if (!BDG_RTRYLOCK(b))
return 0;
return j;
ND(5, "rlock acquired for %d packets", ((j > end ? lim+1 : 0) + end) - j);
ft = kring->nkr_ft;
@ -1802,8 +1880,10 @@ nm_bdg_flush(struct nm_bdg_fwd *ft, u_int n, struct netmap_vp_adapter *na,
needed = d->bq_len + brddst->bq_len;
if (unlikely(dst_na->up.virt_hdr_len != na->up.virt_hdr_len)) {
RD(3, "virt_hdr_mismatch, src %d dst %d", na->up.virt_hdr_len,
dst_na->up.virt_hdr_len);
if (netmap_verbose) {
RD(3, "virt_hdr_mismatch, src %d dst %d", na->up.virt_hdr_len,
dst_na->up.virt_hdr_len);
}
/* There is a virtio-net header/offloadings mismatch between
* source and destination. The slower mismatch datapath will
* be used to cope with all the mismatches.
@ -2125,14 +2205,16 @@ netmap_vp_bdg_attach(const char *name, struct netmap_adapter *na)
* Only persistent VALE ports have a non-null ifp.
*/
static int
netmap_vp_create(struct nmreq *nmr, struct ifnet *ifp, struct netmap_vp_adapter **ret)
netmap_vp_create(struct nmreq *nmr, struct ifnet *ifp,
struct netmap_mem_d *nmd,
struct netmap_vp_adapter **ret)
{
struct netmap_vp_adapter *vpna;
struct netmap_adapter *na;
int error;
int error = 0;
u_int npipes = 0;
vpna = malloc(sizeof(*vpna), M_DEVBUF, M_NOWAIT | M_ZERO);
vpna = nm_os_malloc(sizeof(*vpna));
if (vpna == NULL)
return ENOMEM;
@ -2183,7 +2265,10 @@ netmap_vp_create(struct nmreq *nmr, struct ifnet *ifp, struct netmap_vp_adapter
na->nm_krings_create = netmap_vp_krings_create;
na->nm_krings_delete = netmap_vp_krings_delete;
na->nm_dtor = netmap_vp_dtor;
na->nm_mem = netmap_mem_private_new(na->name,
D("nr_arg2 %d", nmr->nr_arg2);
na->nm_mem = nmd ?
netmap_mem_get(nmd):
netmap_mem_private_new(
na->num_tx_rings, na->num_tx_desc,
na->num_rx_rings, na->num_rx_desc,
nmr->nr_arg3, npipes, &error);
@ -2199,8 +2284,8 @@ netmap_vp_create(struct nmreq *nmr, struct ifnet *ifp, struct netmap_vp_adapter
err:
if (na->nm_mem != NULL)
netmap_mem_delete(na->nm_mem);
free(vpna, M_DEVBUF);
netmap_mem_put(na->nm_mem);
nm_os_free(vpna);
return error;
}
@ -2243,6 +2328,8 @@ netmap_bwrap_dtor(struct netmap_adapter *na)
struct nm_bridge *b = bna->up.na_bdg,
*bh = bna->host.na_bdg;
netmap_mem_put(bna->host.up.nm_mem);
if (b) {
netmap_bdg_detach_common(b, bna->up.bdg_port,
(bh ? bna->host.bdg_port : -1));
@ -2644,7 +2731,7 @@ netmap_bwrap_attach(const char *nr_name, struct netmap_adapter *hwna)
return EBUSY;
}
bna = malloc(sizeof(*bna), M_DEVBUF, M_NOWAIT | M_ZERO);
bna = nm_os_malloc(sizeof(*bna));
if (bna == NULL) {
return ENOMEM;
}
@ -2652,6 +2739,7 @@ netmap_bwrap_attach(const char *nr_name, struct netmap_adapter *hwna)
na = &bna->up.up;
/* make bwrap ifp point to the real ifp */
na->ifp = hwna->ifp;
if_ref(na->ifp);
na->na_private = bna;
strncpy(na->name, nr_name, sizeof(na->name));
/* fill the ring data for the bwrap adapter with rx/tx meanings
@ -2673,7 +2761,7 @@ netmap_bwrap_attach(const char *nr_name, struct netmap_adapter *hwna)
na->nm_notify = netmap_bwrap_notify;
na->nm_bdg_ctl = netmap_bwrap_bdg_ctl;
na->pdev = hwna->pdev;
na->nm_mem = hwna->nm_mem;
na->nm_mem = netmap_mem_get(hwna->nm_mem);
na->virt_hdr_len = hwna->virt_hdr_len;
bna->up.retry = 1; /* XXX maybe this should depend on the hwna */
@ -2697,7 +2785,7 @@ netmap_bwrap_attach(const char *nr_name, struct netmap_adapter *hwna)
// hostna->nm_txsync = netmap_bwrap_host_txsync;
// hostna->nm_rxsync = netmap_bwrap_host_rxsync;
hostna->nm_notify = netmap_bwrap_notify;
hostna->nm_mem = na->nm_mem;
hostna->nm_mem = netmap_mem_get(na->nm_mem);
hostna->na_private = bna;
hostna->na_vp = &bna->up;
na->na_hostvp = hwna->na_hostvp =
@ -2720,7 +2808,7 @@ netmap_bwrap_attach(const char *nr_name, struct netmap_adapter *hwna)
err_free:
hwna->na_vp = hwna->na_hostvp = NULL;
netmap_adapter_put(hwna);
free(bna, M_DEVBUF);
nm_os_free(bna);
return error;
}
@ -2731,8 +2819,7 @@ netmap_init_bridges2(u_int n)
int i;
struct nm_bridge *b;
b = malloc(sizeof(struct nm_bridge) * n, M_DEVBUF,
M_NOWAIT | M_ZERO);
b = nm_os_malloc(sizeof(struct nm_bridge) * n);
if (b == NULL)
return NULL;
for (i = 0; i < n; i++)
@ -2750,7 +2837,7 @@ netmap_uninit_bridges2(struct nm_bridge *b, u_int n)
for (i = 0; i < n; i++)
BDG_RWDESTROY(&b[i]);
free(b, M_DEVBUF);
nm_os_free(b);
}
int