diff options
| author | Lendacky, Thomas <Thomas.Lendacky@amd.com> | 2014-11-05 01:07:02 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-11-06 05:50:12 +0300 |
| commit | 5b9dfe299e55604af47cdca9d03d2e9d4fe2ad53 (patch) | |
| tree | c011bc202e146d22f51b526c39344bf3887e7a53 /drivers/net/ethernet/amd/xgbe/xgbe.h | |
| parent | 9227dc5e579b6b2ef58ad0d3d0d23ddac77846ef (diff) | |
| download | linux-5b9dfe299e55604af47cdca9d03d2e9d4fe2ad53.tar.xz | |
amd-xgbe: Provide support for receive side scaling
This patch provides support for receive side scaling (RSS). RSS allows
for spreading incoming network packets across the Rx queues. When used
in conjunction with the per DMA channel interrupt support, this allows
the receive processing to be spread across multiple processors.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/amd/xgbe/xgbe.h')
| -rw-r--r-- | drivers/net/ethernet/amd/xgbe/xgbe.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe.h b/drivers/net/ethernet/amd/xgbe/xgbe.h index 55c935f4884a..2ac4f176ad88 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe.h +++ b/drivers/net/ethernet/amd/xgbe/xgbe.h @@ -215,6 +215,12 @@ /* Maximum MAC address hash table size (256 bits = 8 bytes) */ #define XGBE_MAC_HASH_TABLE_SIZE 8 +/* Receive Side Scaling */ +#define XGBE_RSS_HASH_KEY_SIZE 40 +#define XGBE_RSS_MAX_TABLE_SIZE 256 +#define XGBE_RSS_LOOKUP_TABLE_TYPE 0 +#define XGBE_RSS_HASH_KEY_TYPE 1 + struct xgbe_prv_data; struct xgbe_packet_data { @@ -233,6 +239,9 @@ struct xgbe_packet_data { unsigned short vlan_ctag; u64 rx_tstamp; + + u32 rss_hash; + enum pkt_hash_types rss_hash_type; }; /* Common Rx and Tx descriptor mapping */ @@ -544,6 +553,10 @@ struct xgbe_hw_if { /* For Data Center Bridging config */ void (*config_dcb_tc)(struct xgbe_prv_data *); void (*config_dcb_pfc)(struct xgbe_prv_data *); + + /* For Receive Side Scaling */ + int (*enable_rss)(struct xgbe_prv_data *); + int (*disable_rss)(struct xgbe_prv_data *); }; struct xgbe_desc_if { @@ -616,6 +629,9 @@ struct xgbe_prv_data { /* XPCS indirect addressing mutex */ struct mutex xpcs_mutex; + /* RSS addressing mutex */ + struct mutex rss_mutex; + int dev_irq; unsigned int per_channel_irq; @@ -668,6 +684,11 @@ struct xgbe_prv_data { unsigned int tx_pause; unsigned int rx_pause; + /* Receive Side Scaling settings */ + u8 rss_key[XGBE_RSS_HASH_KEY_SIZE]; + u32 rss_table[XGBE_RSS_MAX_TABLE_SIZE]; + u32 rss_options; + /* MDIO settings */ struct module *phy_module; char *mii_bus_id; |