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| author |   Eric Dumazet <edumazet@google.com> | 2015-11-18 06:31:00 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-11-18 16:17:41 -0500 |
| commit | d64b5e85bfe2fe4c790abcbd16d9ae32391ddd7e (patch) | |
| tree | 3b15f27d6adbc7fbc1ed4dc605c30a577b50c1c6 /net/core | |
| parent | net: move skb_mark_napi_id() into core networking stack (diff) | |
| download | linux-dev-d64b5e85bfe2fe4c790abcbd16d9ae32391ddd7e.tar.xz linux-dev-d64b5e85bfe2fe4c790abcbd16d9ae32391ddd7e.zip | |
net: add netif_tx_napi_add()
netif_tx_napi_add() is a variant of netif_napi_add()
It should be used by drivers that use a napi structure
to exclusively poll TX.
We do not want to add this kind of napi in napi_hash[] in following
patches, adding generic busy polling to all NAPI drivers.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/dev.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 83b48747928c..ff58a8bc5e3c 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -4737,7 +4737,8 @@ EXPORT_SYMBOL(sk_busy_loop); void napi_hash_add(struct napi_struct *napi) { - if (test_and_set_bit(NAPI_STATE_HASHED, &napi->state)) + if (test_bit(NAPI_STATE_NO_BUSY_POLL, &napi->state) || + test_and_set_bit(NAPI_STATE_HASHED, &napi->state)) return; spin_lock(&napi_hash_lock); |