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Add netdump support to cxgb(4).

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Tested with a T320 adapter.

Reviewed by:	np
MFC after:	1 month
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D15258
This commit is contained in:
markj 2018-05-06 00:48:43 +00:00
parent 7b25e48395
commit f97c308eb9
3 changed files with 116 additions and 0 deletions
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7
sys/dev/cxgb/cxgb_adapter.h
View File

@ -576,4 +576,11 @@ int cxgb_transmit(struct ifnet *ifp, struct mbuf *m);
void cxgb_qflush(struct ifnet *ifp);
void t3_iterate(void (*)(struct adapter *, void *), void *);
void cxgb_refresh_stats(struct port_info *);
#ifdef NETDUMP
int cxgb_netdump_encap(struct sge_qset *qs, struct mbuf **m);
int cxgb_netdump_poll_rx(adapter_t *adap, struct sge_qset *qs);
int cxgb_netdump_poll_tx(struct sge_qset *qs);
#endif
#endif

75
sys/dev/cxgb/cxgb_main.c
View File

@ -74,6 +74,7 @@ __FBSDID("$FreeBSD$");
#include <netinet/ip.h>
#include <netinet/tcp.h>
#include <netinet/udp.h>
#include <netinet/netdump/netdump.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
@ -191,6 +192,8 @@ static devclass_t cxgb_port_devclass;
DRIVER_MODULE(cxgb, cxgbc, cxgb_port_driver, cxgb_port_devclass, 0, 0);
MODULE_VERSION(cxgb, 1);
NETDUMP_DEFINE(cxgb);
static struct mtx t3_list_lock;
static SLIST_HEAD(, adapter) t3_list;
#ifdef TCP_OFFLOAD
@ -1045,6 +1048,9 @@ cxgb_port_attach(device_t dev)
ether_ifattach(ifp, p->hw_addr);
/* Attach driver netdump methods. */
NETDUMP_SET(ifp, cxgb);
#ifdef DEFAULT_JUMBO
if (sc->params.nports <= 2)
ifp->if_mtu = ETHERMTU_JUMBO;
@ -3578,3 +3584,72 @@ cxgbc_mod_event(module_t mod, int cmd, void *arg)
return (rc);
}
#ifdef NETDUMP
static void
cxgb_netdump_init(struct ifnet *ifp, int *nrxr, int *ncl, int *clsize)
{
struct port_info *pi;
adapter_t *adap;
pi = if_getsoftc(ifp);
adap = pi->adapter;
ADAPTER_LOCK(adap);
*nrxr = SGE_QSETS;
*ncl = adap->sge.qs[0].fl[1].size;
*clsize = adap->sge.qs[0].fl[1].buf_size;
ADAPTER_UNLOCK(adap);
}
static void
cxgb_netdump_event(struct ifnet *ifp, enum netdump_ev event)
{
struct port_info *pi;
struct sge_qset *qs;
int i;
pi = if_getsoftc(ifp);
if (event == NETDUMP_START)
for (i = 0; i < SGE_QSETS; i++) {
qs = &pi->adapter->sge.qs[i];
/* Need to reinit after netdump_mbuf_dump(). */
qs->fl[0].zone = zone_pack;
qs->fl[1].zone = zone_clust;
qs->lro.enabled = 0;
}
}
static int
cxgb_netdump_transmit(struct ifnet *ifp, struct mbuf *m)
{
struct port_info *pi;
struct sge_qset *qs;
pi = if_getsoftc(ifp);
if ((if_getdrvflags(ifp) & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
IFF_DRV_RUNNING)
return (ENOENT);
qs = &pi->adapter->sge.qs[pi->first_qset];
return (cxgb_netdump_encap(qs, &m));
}
static int
cxgb_netdump_poll(struct ifnet *ifp, int count)
{
struct port_info *pi;
adapter_t *adap;
int i;
pi = if_getsoftc(ifp);
if ((if_getdrvflags(ifp) & IFF_DRV_RUNNING) == 0)
return (ENOENT);
adap = pi->adapter;
for (i = 0; i < SGE_QSETS; i++)
(void)cxgb_netdump_poll_rx(adap, &adap->sge.qs[i]);
(void)cxgb_netdump_poll_tx(&adap->sge.qs[pi->first_qset]);
return (0);
}
#endif /* NETDUMP */

34
sys/dev/cxgb/cxgb_sge.c
View File

@ -390,6 +390,15 @@ reclaim_completed_tx(struct sge_qset *qs, int reclaim_min, int queue)
return (reclaim);
}
#ifdef NETDUMP
int
cxgb_netdump_poll_tx(struct sge_qset *qs)
{
return (reclaim_completed_tx(qs, TX_RECLAIM_MAX, TXQ_ETH));
}
#endif
/**
* should_restart_tx - are there enough resources to restart a Tx queue?
* @q: the Tx queue
@ -1586,6 +1595,23 @@ t3_encap(struct sge_qset *qs, struct mbuf **m)
return (0);
}
#ifdef NETDUMP
int
cxgb_netdump_encap(struct sge_qset *qs, struct mbuf **m)
{
int error;
error = t3_encap(qs, m);
if (error == 0)
check_ring_tx_db(qs->port->adapter, &qs->txq[TXQ_ETH], 1);
else if (*m != NULL) {
m_freem(*m);
*m = NULL;
}
return (error);
}
#endif
void
cxgb_tx_watchdog(void *arg)
{
@ -3014,6 +3040,14 @@ process_responses_gts(adapter_t *adap, struct sge_rspq *rq)
return (work);
}
#ifdef NETDUMP
int
cxgb_netdump_poll_rx(adapter_t *adap, struct sge_qset *qs)
{
return (process_responses_gts(adap, &qs->rspq));
}
#endif
/*
* Interrupt handler for legacy INTx interrupts for T3B-based cards.