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net: introduce NAPI_POLL_WEIGHT

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Some drivers use a too big NAPI poll weight.

This patch adds a NAPI_POLL_WEIGHT default value
and issues an error message if a driver attempts
to use a bigger weight.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2013-03-05 15:57:22 +00:00 • committed by David S. Miller
commit 82dc3c63c6
2 changed files with 8 additions and 0 deletions
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5
include/linux/netdevice.h
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@ -1475,6 +1475,11 @@ static inline void *netdev_priv(const struct net_device *dev)
*/
#define SET_NETDEV_DEVTYPE(net, devtype) ((net)->dev.type = (devtype))
/* Default NAPI poll() weight
* Device drivers are strongly advised to not use bigger value
*/
#define NAPI_POLL_WEIGHT 64
/**
* netif_napi_add - initialize a napi context
* @dev: network device