diff options
| author | Eric Dumazet <edumazet@google.com> | 2015-11-18 17:31:03 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-11-19 00:17:42 +0300 |
| commit | 93d05d4a320cb16712bb3d57a9658f395d8cecb9 (patch) | |
| tree | 65c0340484128f9e5d9e732b92bc22b458faae94 /drivers/net/ethernet/chelsio/cxgb4/sge.c | |
| parent | 34cbe27e811c591c854a39c0dee1b461bb796953 (diff) | |
| download | linux-93d05d4a320cb16712bb3d57a9658f395d8cecb9.tar.xz | |
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/chelsio/cxgb4/sge.c')
| -rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/sge.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c index f650f295f264..48d8fbb1c220 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/sge.c +++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c @@ -2527,7 +2527,6 @@ int t4_sge_alloc_rxq(struct adapter *adap, struct sge_rspq *iq, bool fwevtq, goto err; netif_napi_add(dev, &iq->napi, napi_rx_handler, 64); - napi_hash_add(&iq->napi); iq->cur_desc = iq->desc; iq->cidx = 0; iq->gen = 1; |