| Message ID | 20100329174727.4654e19c@nehalam |
|---|---|
| State | Accepted, archived |
| Delegated to: | David Miller |
| Headers | show |
On 03/29/2010 08:47 PM, Stephen Hemminger wrote: > This adds ethtool and device feature flag to allow control > of receive hashing offload. > > Signed-off-by: Stephen Hemminger<shemminger@vyatta.com> Acked-by: Jeff Garzik <jgarzik@redhat.com> -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
From: Stephen Hemminger <shemminger@vyatta.com> Date: Mon, 29 Mar 2010 17:47:27 -0700 > This adds ethtool and device feature flag to allow control > of receive hashing offload. > > Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> > --- > Supersedes earlier patch, decided to call it RXHASH not RSS since > we don't care about other vendors acronyms Ah, now I understand, ignore my other email. Applied, thanks everyone. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
--- a/include/linux/ethtool.h 2010-03-28 14:09:58.611267016 -0700 +++ b/include/linux/ethtool.h 2010-03-28 14:19:45.032516128 -0700 @@ -310,6 +310,7 @@ struct ethtool_perm_addr { enum ethtool_flags { ETH_FLAG_LRO = (1 << 15), /* LRO is enabled */ ETH_FLAG_NTUPLE = (1 << 27), /* N-tuple filters enabled */ + ETH_FLAG_RXHASH = (1 << 28), }; /* The following structures are for supporting RX network flow --- a/include/linux/netdevice.h 2010-03-28 14:12:13.092517615 -0700 +++ b/include/linux/netdevice.h 2010-03-28 14:13:47.232915349 -0700 @@ -785,6 +785,7 @@ struct net_device { #define NETIF_F_SCTP_CSUM (1 << 25) /* SCTP checksum offload */ #define NETIF_F_FCOE_MTU (1 << 26) /* Supports max FCoE MTU, 2158 bytes*/ #define NETIF_F_NTUPLE (1 << 27) /* N-tuple filters supported */ +#define NETIF_F_RXHASH (1 << 28) /* Receive hashing offload */ /* Segmentation offload features */ #define NETIF_F_GSO_SHIFT 16 --- a/net/core/ethtool.c 2010-03-28 14:12:25.012207457 -0700 +++ b/net/core/ethtool.c 2010-03-28 14:19:41.548521569 -0700 @@ -121,7 +121,7 @@ int ethtool_op_set_ufo(struct net_device * NETIF_F_xxx values in include/linux/netdevice.h */ static const u32 flags_dup_features = - (ETH_FLAG_LRO | ETH_FLAG_NTUPLE); + (ETH_FLAG_LRO | ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH); u32 ethtool_op_get_flags(struct net_device *dev) { @@ -152,6 +152,11 @@ int ethtool_op_set_flags(struct net_devi features &= ~NETIF_F_NTUPLE; } + if (data & ETH_FLAG_RXHASH) + features |= NETIF_F_RXHASH; + else + features &= ~NETIF_F_RXHASH; + dev->features = features; return 0; }
This adds ethtool and device feature flag to allow control of receive hashing offload. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> --- Supersedes earlier patch, decided to call it RXHASH not RSS since we don't care about other vendors acronyms -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html