468 lines
10 KiB
C
468 lines
10 KiB
C
|
|
/**************************************************************************
|
|
|
|
Copyright (c) 2007, Chelsio Inc.
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are met:
|
|
|
|
1. Redistributions of source code must retain the above copyright notice,
|
|
this list of conditions and the following disclaimer.
|
|
|
|
2. Neither the name of the Chelsio Corporation nor the names of its
|
|
contributors may be used to endorse or promote products derived from
|
|
this software without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
|
|
***************************************************************************/
|
|
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/module.h>
|
|
#include <sys/pciio.h>
|
|
#include <sys/conf.h>
|
|
#include <machine/bus.h>
|
|
#include <machine/resource.h>
|
|
#include <sys/bus_dma.h>
|
|
#include <sys/rman.h>
|
|
#include <sys/ioccom.h>
|
|
#include <sys/mbuf.h>
|
|
#include <sys/linker.h>
|
|
#include <sys/firmware.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/sockio.h>
|
|
#include <sys/smp.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/syslog.h>
|
|
#include <sys/queue.h>
|
|
#include <sys/taskqueue.h>
|
|
#include <sys/proc.h>
|
|
|
|
#ifdef CONFIG_DEFINED
|
|
#include <cxgb_include.h>
|
|
#else
|
|
#include <dev/cxgb/cxgb_include.h>
|
|
#endif
|
|
|
|
#include <net/route.h>
|
|
|
|
#define VALIDATE_TID 0
|
|
MALLOC_DEFINE(M_CXGB, "cxgb", "Chelsio 10 Gigabit Ethernet and services");
|
|
|
|
TAILQ_HEAD(, cxgb_client) client_list;
|
|
TAILQ_HEAD(, t3cdev) ofld_dev_list;
|
|
|
|
|
|
static struct mtx cxgb_db_lock;
|
|
|
|
|
|
static int inited = 0;
|
|
|
|
static inline int
|
|
offload_activated(struct t3cdev *tdev)
|
|
{
|
|
struct adapter *adapter = tdev2adap(tdev);
|
|
|
|
return (isset(&adapter->open_device_map, OFFLOAD_DEVMAP_BIT));
|
|
}
|
|
|
|
static inline void
|
|
register_tdev(struct t3cdev *tdev)
|
|
{
|
|
static int unit;
|
|
|
|
mtx_lock(&cxgb_db_lock);
|
|
snprintf(tdev->name, sizeof(tdev->name), "ofld_dev%d", unit++);
|
|
TAILQ_INSERT_TAIL(&ofld_dev_list, tdev, entry);
|
|
mtx_unlock(&cxgb_db_lock);
|
|
}
|
|
|
|
static inline void
|
|
unregister_tdev(struct t3cdev *tdev)
|
|
{
|
|
mtx_lock(&cxgb_db_lock);
|
|
TAILQ_REMOVE(&ofld_dev_list, tdev, entry);
|
|
mtx_unlock(&cxgb_db_lock);
|
|
}
|
|
|
|
#ifdef TOE_ENABLED
|
|
/**
|
|
* cxgb_register_client - register an offload client
|
|
* @client: the client
|
|
*
|
|
* Add the client to the client list,
|
|
* and call backs the client for each activated offload device
|
|
*/
|
|
void
|
|
cxgb_register_client(struct cxgb_client *client)
|
|
{
|
|
struct t3cdev *tdev;
|
|
|
|
mtx_lock(&cxgb_db_lock);
|
|
TAILQ_INSERT_TAIL(&client_list, client, client_entry);
|
|
|
|
if (client->add) {
|
|
TAILQ_FOREACH(tdev, &ofld_dev_list, entry) {
|
|
if (offload_activated(tdev)) {
|
|
client->add(tdev);
|
|
} else
|
|
CTR1(KTR_CXGB,
|
|
"cxgb_register_client: %p not activated", tdev);
|
|
|
|
}
|
|
}
|
|
mtx_unlock(&cxgb_db_lock);
|
|
}
|
|
|
|
/**
|
|
* cxgb_unregister_client - unregister an offload client
|
|
* @client: the client
|
|
*
|
|
* Remove the client to the client list,
|
|
* and call backs the client for each activated offload device.
|
|
*/
|
|
void
|
|
cxgb_unregister_client(struct cxgb_client *client)
|
|
{
|
|
struct t3cdev *tdev;
|
|
|
|
mtx_lock(&cxgb_db_lock);
|
|
TAILQ_REMOVE(&client_list, client, client_entry);
|
|
|
|
if (client->remove) {
|
|
TAILQ_FOREACH(tdev, &ofld_dev_list, entry) {
|
|
if (offload_activated(tdev))
|
|
client->remove(tdev);
|
|
}
|
|
}
|
|
mtx_unlock(&cxgb_db_lock);
|
|
}
|
|
|
|
/**
|
|
* cxgb_add_clients - activate register clients for an offload device
|
|
* @tdev: the offload device
|
|
*
|
|
* Call backs all registered clients once a offload device is activated
|
|
*/
|
|
void
|
|
cxgb_add_clients(struct t3cdev *tdev)
|
|
{
|
|
struct cxgb_client *client;
|
|
|
|
mtx_lock(&cxgb_db_lock);
|
|
TAILQ_FOREACH(client, &client_list, client_entry) {
|
|
if (client->add)
|
|
client->add(tdev);
|
|
}
|
|
mtx_unlock(&cxgb_db_lock);
|
|
}
|
|
|
|
/**
|
|
* cxgb_remove_clients - activate register clients for an offload device
|
|
* @tdev: the offload device
|
|
*
|
|
* Call backs all registered clients once a offload device is deactivated
|
|
*/
|
|
void
|
|
cxgb_remove_clients(struct t3cdev *tdev)
|
|
{
|
|
struct cxgb_client *client;
|
|
|
|
mtx_lock(&cxgb_db_lock);
|
|
TAILQ_FOREACH(client, &client_list, client_entry) {
|
|
if (client->remove)
|
|
client->remove(tdev);
|
|
}
|
|
mtx_unlock(&cxgb_db_lock);
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* cxgb_ofld_recv - process n received offload packets
|
|
* @dev: the offload device
|
|
* @m: an array of offload packets
|
|
* @n: the number of offload packets
|
|
*
|
|
* Process an array of ingress offload packets. Each packet is forwarded
|
|
* to any active network taps and then passed to the offload device's receive
|
|
* method. We optimize passing packets to the receive method by passing
|
|
* it the whole array at once except when there are active taps.
|
|
*/
|
|
int
|
|
cxgb_ofld_recv(struct t3cdev *dev, struct mbuf **m, int n)
|
|
{
|
|
|
|
return dev->recv(dev, m, n);
|
|
}
|
|
|
|
/*
|
|
* Dummy handler for Rx offload packets in case we get an offload packet before
|
|
* proper processing is setup. This complains and drops the packet as it isn't
|
|
* normal to get offload packets at this stage.
|
|
*/
|
|
static int
|
|
rx_offload_blackhole(struct t3cdev *dev, struct mbuf **m, int n)
|
|
{
|
|
while (n--)
|
|
m_freem(m[n]);
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
dummy_neigh_update(struct t3cdev *dev, struct rtentry *neigh, uint8_t *enaddr,
|
|
struct sockaddr *sa)
|
|
{
|
|
}
|
|
|
|
void
|
|
cxgb_set_dummy_ops(struct t3cdev *dev)
|
|
{
|
|
dev->recv = rx_offload_blackhole;
|
|
dev->arp_update = dummy_neigh_update;
|
|
}
|
|
|
|
static int
|
|
do_smt_write_rpl(struct t3cdev *dev, struct mbuf *m)
|
|
{
|
|
struct cpl_smt_write_rpl *rpl = cplhdr(m);
|
|
|
|
if (rpl->status != CPL_ERR_NONE)
|
|
log(LOG_ERR,
|
|
"Unexpected SMT_WRITE_RPL status %u for entry %u\n",
|
|
rpl->status, GET_TID(rpl));
|
|
|
|
return CPL_RET_BUF_DONE;
|
|
}
|
|
|
|
static int
|
|
do_l2t_write_rpl(struct t3cdev *dev, struct mbuf *m)
|
|
{
|
|
struct cpl_l2t_write_rpl *rpl = cplhdr(m);
|
|
|
|
if (rpl->status != CPL_ERR_NONE)
|
|
log(LOG_ERR,
|
|
"Unexpected L2T_WRITE_RPL status %u for entry %u\n",
|
|
rpl->status, GET_TID(rpl));
|
|
|
|
return CPL_RET_BUF_DONE;
|
|
}
|
|
|
|
static int
|
|
do_rte_write_rpl(struct t3cdev *dev, struct mbuf *m)
|
|
{
|
|
struct cpl_rte_write_rpl *rpl = cplhdr(m);
|
|
|
|
if (rpl->status != CPL_ERR_NONE)
|
|
log(LOG_ERR,
|
|
"Unexpected L2T_WRITE_RPL status %u for entry %u\n",
|
|
rpl->status, GET_TID(rpl));
|
|
|
|
return CPL_RET_BUF_DONE;
|
|
}
|
|
|
|
static int
|
|
do_set_tcb_rpl(struct t3cdev *dev, struct mbuf *m)
|
|
{
|
|
struct cpl_set_tcb_rpl *rpl = cplhdr(m);
|
|
|
|
if (rpl->status != CPL_ERR_NONE)
|
|
log(LOG_ERR,
|
|
"Unexpected SET_TCB_RPL status %u for tid %u\n",
|
|
rpl->status, GET_TID(rpl));
|
|
return CPL_RET_BUF_DONE;
|
|
}
|
|
|
|
static int
|
|
do_trace(struct t3cdev *dev, struct mbuf *m)
|
|
{
|
|
#if 0
|
|
struct cpl_trace_pkt *p = cplhdr(m);
|
|
|
|
|
|
skb->protocol = 0xffff;
|
|
skb->dev = dev->lldev;
|
|
skb_pull(skb, sizeof(*p));
|
|
skb->mac.raw = mtod(m, (char *));
|
|
netif_receive_skb(skb);
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Process a received packet with an unknown/unexpected CPL opcode.
|
|
*/
|
|
static int
|
|
do_bad_cpl(struct t3cdev *dev, struct mbuf *m)
|
|
{
|
|
log(LOG_ERR, "%s: received bad CPL command 0x%x\n", dev->name,
|
|
0xFF & *mtod(m, uint32_t *));
|
|
return (CPL_RET_BUF_DONE | CPL_RET_BAD_MSG);
|
|
}
|
|
|
|
/*
|
|
* Handlers for each CPL opcode
|
|
*/
|
|
static cpl_handler_func cpl_handlers[256];
|
|
|
|
/*
|
|
* T3CDEV's receive method.
|
|
*/
|
|
int
|
|
process_rx(struct t3cdev *dev, struct mbuf **m, int n)
|
|
{
|
|
while (n--) {
|
|
struct mbuf *m0 = *m++;
|
|
unsigned int opcode = G_OPCODE(ntohl(m0->m_pkthdr.csum_data));
|
|
int ret;
|
|
|
|
DPRINTF("processing op=0x%x m=%p data=%p\n", opcode, m0, m0->m_data);
|
|
|
|
ret = cpl_handlers[opcode] (dev, m0);
|
|
|
|
#if VALIDATE_TID
|
|
if (ret & CPL_RET_UNKNOWN_TID) {
|
|
union opcode_tid *p = cplhdr(m0);
|
|
|
|
log(LOG_ERR, "%s: CPL message (opcode %u) had "
|
|
"unknown TID %u\n", dev->name, opcode,
|
|
G_TID(ntohl(p->opcode_tid)));
|
|
}
|
|
#endif
|
|
if (ret & CPL_RET_BUF_DONE)
|
|
m_freem(m0);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Add a new handler to the CPL dispatch table. A NULL handler may be supplied
|
|
* to unregister an existing handler.
|
|
*/
|
|
void
|
|
t3_register_cpl_handler(unsigned int opcode, cpl_handler_func h)
|
|
{
|
|
if (opcode < NUM_CPL_CMDS)
|
|
cpl_handlers[opcode] = h ? h : do_bad_cpl;
|
|
else
|
|
log(LOG_ERR, "T3C: handler registration for "
|
|
"opcode %x failed\n", opcode);
|
|
}
|
|
|
|
/*
|
|
* Allocate a chunk of memory using kmalloc or, if that fails, vmalloc.
|
|
* The allocated memory is cleared.
|
|
*/
|
|
void *
|
|
cxgb_alloc_mem(unsigned long size)
|
|
{
|
|
|
|
return malloc(size, M_CXGB, M_ZERO|M_NOWAIT);
|
|
}
|
|
|
|
/*
|
|
* Free memory allocated through t3_alloc_mem().
|
|
*/
|
|
void
|
|
cxgb_free_mem(void *addr)
|
|
{
|
|
free(addr, M_CXGB);
|
|
}
|
|
|
|
static __inline int
|
|
adap2type(struct adapter *adapter)
|
|
{
|
|
int type = 0;
|
|
|
|
switch (adapter->params.rev) {
|
|
case T3_REV_A:
|
|
type = T3A;
|
|
break;
|
|
case T3_REV_B:
|
|
case T3_REV_B2:
|
|
type = T3B;
|
|
break;
|
|
case T3_REV_C:
|
|
type = T3C;
|
|
break;
|
|
}
|
|
return type;
|
|
}
|
|
|
|
void
|
|
cxgb_adapter_ofld(struct adapter *adapter)
|
|
{
|
|
struct t3cdev *tdev = &adapter->tdev;
|
|
|
|
cxgb_set_dummy_ops(tdev);
|
|
tdev->type = adap2type(adapter);
|
|
tdev->adapter = adapter;
|
|
register_tdev(tdev);
|
|
|
|
}
|
|
|
|
void
|
|
cxgb_adapter_unofld(struct adapter *adapter)
|
|
{
|
|
struct t3cdev *tdev = &adapter->tdev;
|
|
|
|
tdev->recv = NULL;
|
|
tdev->arp_update = NULL;
|
|
unregister_tdev(tdev);
|
|
}
|
|
|
|
void
|
|
cxgb_offload_init(void)
|
|
{
|
|
int i;
|
|
|
|
if (inited++)
|
|
return;
|
|
|
|
mtx_init(&cxgb_db_lock, "ofld db", NULL, MTX_DEF);
|
|
|
|
TAILQ_INIT(&client_list);
|
|
TAILQ_INIT(&ofld_dev_list);
|
|
|
|
for (i = 0; i < 0x100; ++i)
|
|
cpl_handlers[i] = do_bad_cpl;
|
|
|
|
t3_register_cpl_handler(CPL_SMT_WRITE_RPL, do_smt_write_rpl);
|
|
t3_register_cpl_handler(CPL_RTE_WRITE_RPL, do_rte_write_rpl);
|
|
t3_register_cpl_handler(CPL_L2T_WRITE_RPL, do_l2t_write_rpl);
|
|
|
|
t3_register_cpl_handler(CPL_SET_TCB_RPL, do_set_tcb_rpl);
|
|
t3_register_cpl_handler(CPL_TRACE_PKT, do_trace);
|
|
|
|
}
|
|
|
|
void
|
|
cxgb_offload_exit(void)
|
|
{
|
|
|
|
if (--inited)
|
|
return;
|
|
|
|
mtx_destroy(&cxgb_db_lock);
|
|
}
|
|
|
|
MODULE_VERSION(if_cxgb, 1);
|