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infiniband: Opt-in for net epoch

Browse source 
This is counterpart to e87c494015, which did the same for ethernet.

Suggested by:	hselasky
Reviewed by:	hselasky, kib
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D39405
This commit is contained in:
Zhenlei Huang 2023-04-06 00:05:02 +08:00
parent 03276e338a
commit fc6c93b6a5
5 changed files with 14 additions and 6 deletions
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9
sys/net/if_infiniband.c
View file

@ -415,9 +415,13 @@ infiniband_input(struct ifnet *ifp, struct mbuf *m)
struct infiniband_header *ibh;
struct epoch_tracker et;
int isr;
bool needs_epoch;
needs_epoch = (ifp->if_flags & IFF_KNOWSEPOCH) == 0;
CURVNET_SET_QUIET(ifp->if_vnet);
NET_EPOCH_ENTER(et);
if (__predict_false(needs_epoch))
NET_EPOCH_ENTER(et);
if ((ifp->if_flags & IFF_UP) == 0) {
if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
@ -507,7 +511,8 @@ infiniband_input(struct ifnet *ifp, struct mbuf *m)
/* Allow monitor mode to claim this frame, after stats are updated. */
netisr_dispatch(isr, m);
done:
NET_EPOCH_EXIT(et);
if (__predict_false(needs_epoch))
NET_EPOCH_EXIT(et);
CURVNET_RESTORE();
}

2
sys/ofed/drivers/infiniband/ulp/ipoib/ipoib.h
View file

@ -459,7 +459,7 @@ void ipoib_reap_ah(struct work_struct *work);
void ipoib_mark_paths_invalid(struct ipoib_dev_priv *priv);
void ipoib_flush_paths(struct ipoib_dev_priv *priv);
struct ipoib_dev_priv *ipoib_intf_alloc(const char *format);
struct ipoib_dev_priv *ipoib_intf_alloc(const char *format, struct ib_device *ca);
int ipoib_ib_dev_init(struct ipoib_dev_priv *priv, struct ib_device *ca,
int port);

6
sys/ofed/drivers/infiniband/ulp/ipoib/ipoib_main.c
View file

@ -901,7 +901,7 @@ ipoib_priv_alloc(void)
}
struct ipoib_dev_priv *
ipoib_intf_alloc(const char *name)
ipoib_intf_alloc(const char *name, struct ib_device *hca)
{
struct ipoib_dev_priv *priv;
if_t dev;
@ -922,6 +922,8 @@ ipoib_intf_alloc(const char *name)
}
if_initname(dev, name, priv->unit);
if_setflags(dev, IFF_BROADCAST | IFF_MULTICAST);
if (hca->attrs.device_cap_flags & IB_DEVICE_KNOWSEPOCH)
if_setflagbits(dev, IFF_KNOWSEPOCH, 0);
infiniband_ifattach(priv->dev, NULL, priv->broadcastaddr);
@ -976,7 +978,7 @@ ipoib_add_port(const char *format, struct ib_device *hca, u8 port)
struct ib_port_attr attr;
int result = -ENOMEM;
priv = ipoib_intf_alloc(format);
priv = ipoib_intf_alloc(format, hca);
if (!priv)
goto alloc_mem_failed;

2
sys/ofed/drivers/infiniband/ulp/ipoib/ipoib_vlan.c
View file

@ -89,7 +89,7 @@ int ipoib_vlan_add(if_t pdev, unsigned short pkey)
snprintf(intf_name, sizeof intf_name, "%s.%04x",
ppriv->dev->name, pkey);
priv = ipoib_intf_alloc(intf_name);
priv = ipoib_intf_alloc(intf_name, ppriv->ca);
if (!priv) {
result = -ENOMEM;
goto err;

1
sys/ofed/include/rdma/ib_verbs.h
View file

@ -242,6 +242,7 @@ enum ib_device_cap_flags {
IB_DEVICE_SG_GAPS_REG = (1ULL << 32),
IB_DEVICE_VIRTUAL_FUNCTION = (1ULL << 33),
IB_DEVICE_RAW_SCATTER_FCS = (1ULL << 34),
IB_DEVICE_KNOWSEPOCH = (1ULL << 35),
};
enum ib_atomic_cap {