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| author | Eric Dumazet <edumazet@google.com> | 2015-11-18 15:31:03 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-11-18 22:17:42 +0100 |
| commit | 93d05d4a320cb16712bb3d57a9658f395d8cecb9 (patch) | |
| tree | 65c0340484128f9e5d9e732b92bc22b458faae94 /drivers/net/ethernet/cisco | |
| parent | net: napi_hash_del() returns a boolean status (diff) | |
| download | linux-93d05d4a320cb16712bb3d57a9658f395d8cecb9.tar.xz linux-93d05d4a320cb16712bb3d57a9658f395d8cecb9.zip | |
net: provide generic busy polling to all NAPI drivers
NAPI drivers no longer need to observe a particular protocol
to benefit from busy polling (CONFIG_NET_RX_BUSY_POLL=y)
napi_hash_add() and napi_hash_del() are automatically called
from core networking stack, respectively from
netif_napi_add() and netif_napi_del()
This patch depends on free_netdev() and netif_napi_del() being
called from process context, which seems to be the norm.
Drivers might still prefer to call napi_hash_del() on their
own, since they might combine all the rcu grace periods into
a single one, knowing their NAPI structures lifetime, while
core networking stack has no idea of a possible combining.
Once this patch proves to not bring serious regressions,
we will cleanup drivers to either remove napi_hash_del()
or provide appropriate rcu grace periods combining.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/cisco')
| -rw-r--r-- | drivers/net/ethernet/cisco/enic/enic_main.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/net/ethernet/cisco/enic/enic_main.c b/drivers/net/ethernet/cisco/enic/enic_main.c index b36643ef0593..b2182d3ba3cc 100644 --- a/drivers/net/ethernet/cisco/enic/enic_main.c +++ b/drivers/net/ethernet/cisco/enic/enic_main.c @@ -2458,13 +2458,11 @@ static int enic_dev_init(struct enic *enic) switch (vnic_dev_get_intr_mode(enic->vdev)) { default: netif_napi_add(netdev, &enic->napi[0], enic_poll, 64); - napi_hash_add(&enic->napi[0]); break; case VNIC_DEV_INTR_MODE_MSIX: for (i = 0; i < enic->rq_count; i++) { netif_napi_add(netdev, &enic->napi[i], enic_poll_msix_rq, NAPI_POLL_WEIGHT); - napi_hash_add(&enic->napi[i]); } for (i = 0; i < enic->wq_count; i++) netif_napi_add(netdev, &enic->napi[enic_cq_wq(enic, i)], |