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| author |   Eric Dumazet <edumazet@google.com> | 2012-09-27 19:29:05 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2012-10-01 17:01:46 -0400 |
| commit | c9e6bc644e557338221e75c242ab12c275a67d1b (patch) | |
| tree | dea44a1edd85dccafc2d0973280d3a608d69eb02 /net/core/dev.c | |
| parent | tcp: gro: add checksuming helpers (diff) | |
| download | linux-dev-c9e6bc644e557338221e75c242ab12c275a67d1b.tar.xz linux-dev-c9e6bc644e557338221e75c242ab12c275a67d1b.zip | |
net: add gro_cells infrastructure
This adds a new include file (include/net/gro_cells.h), to bring GRO
(Generic Receive Offload) capability to tunnels, in a modular way.
Because tunnels receive path is lockless, and GRO adds a serialization
using a napi_struct, I chose to add an array of up to
DEFAULT_MAX_NUM_RSS_QUEUES cells, so that multi queue devices wont be
slowed down because of GRO layer.
skb_get_rx_queue() is used as selector.
In the future, we might add optional fanout capabilities, using rxhash
for example.
With help from Ben Hutchings who reminded me
netif_get_num_default_rss_queues() function.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/dev.c')
| -rw-r--r-- | net/core/dev.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 3e645f3751bf..ba4bb118a756 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -2645,6 +2645,8 @@ EXPORT_SYMBOL(dev_queue_xmit); =======================================================================*/ int netdev_max_backlog __read_mostly = 1000; +EXPORT_SYMBOL(netdev_max_backlog); + int netdev_tstamp_prequeue __read_mostly = 1; int netdev_budget __read_mostly = 300; int weight_p __read_mostly = 64; /* old backlog weight */ |