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Date: Fri, 5 Dec 2014 09:52:44 -0800
From: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To: davem@...emloft.net
Cc: Don Skidmore <donald.c.skidmore@...el.com>, netdev@...r.kernel.org,
nhorman@...hat.com, sassmann@...hat.com, jogreene@...hat.com,
Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next 05/14] ixgbe: add support for X550 extended RSS support
From: Don Skidmore <donald.c.skidmore@...el.com>
The new X550 family of MAC's will have a larger RSS hash (16 -> 64).
It will also support individual VF to have their own independent RSS
hash key. This patch will enable this functionality
Signed-off-by: Don Skidmore <donald.c.skidmore@...el.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
drivers/net/ethernet/intel/ixgbe/ixgbe.h | 36 ++++++++---
drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c | 9 +--
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 82 +++++++++++++++++++++---
drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c | 3 +-
drivers/net/ethernet/intel/ixgbe/ixgbe_type.h | 2 +
5 files changed, 107 insertions(+), 25 deletions(-)
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe.h b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
index 86fa607..6fbc7d7 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
@@ -300,16 +300,17 @@ enum ixgbe_ring_f_enum {
RING_F_ARRAY_SIZE /* must be last in enum set */
};
-#define IXGBE_MAX_RSS_INDICES 16
-#define IXGBE_MAX_VMDQ_INDICES 64
-#define IXGBE_MAX_FDIR_INDICES 63 /* based on q_vector limit */
-#define IXGBE_MAX_FCOE_INDICES 8
-#define MAX_RX_QUEUES (IXGBE_MAX_FDIR_INDICES + 1)
-#define MAX_TX_QUEUES (IXGBE_MAX_FDIR_INDICES + 1)
-#define IXGBE_MAX_L2A_QUEUES 4
-#define IXGBE_BAD_L2A_QUEUE 3
-#define IXGBE_MAX_MACVLANS 31
-#define IXGBE_MAX_DCBMACVLANS 8
+#define IXGBE_MAX_RSS_INDICES 16
+#define IXGBE_MAX_RSS_INDICES_X550 64
+#define IXGBE_MAX_VMDQ_INDICES 64
+#define IXGBE_MAX_FDIR_INDICES 63 /* based on q_vector limit */
+#define IXGBE_MAX_FCOE_INDICES 8
+#define MAX_RX_QUEUES (IXGBE_MAX_FDIR_INDICES + 1)
+#define MAX_TX_QUEUES (IXGBE_MAX_FDIR_INDICES + 1)
+#define IXGBE_MAX_L2A_QUEUES 4
+#define IXGBE_BAD_L2A_QUEUE 3
+#define IXGBE_MAX_MACVLANS 31
+#define IXGBE_MAX_DCBMACVLANS 8
struct ixgbe_ring_feature {
u16 limit; /* upper limit on feature indices */
@@ -764,6 +765,21 @@ struct ixgbe_adapter {
unsigned long fwd_bitmask; /* Bitmask indicating in use pools */
};
+static inline u8 ixgbe_max_rss_indices(struct ixgbe_adapter *adapter)
+{
+ switch (adapter->hw.mac.type) {
+ case ixgbe_mac_82598EB:
+ case ixgbe_mac_82599EB:
+ case ixgbe_mac_X540:
+ return IXGBE_MAX_RSS_INDICES;
+ case ixgbe_mac_X550:
+ case ixgbe_mac_X550EM_x:
+ return IXGBE_MAX_RSS_INDICES_X550;
+ default:
+ return 0;
+ }
+}
+
struct ixgbe_fdir_filter {
struct hlist_node fdir_node;
union ixgbe_atr_input filter;
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
index 26fd85e..e5be0dd 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
@@ -2927,7 +2927,7 @@ static unsigned int ixgbe_max_channels(struct ixgbe_adapter *adapter)
max_combined = IXGBE_MAX_FDIR_INDICES;
} else {
/* support up to 16 queues with RSS */
- max_combined = IXGBE_MAX_RSS_INDICES;
+ max_combined = ixgbe_max_rss_indices(adapter);
}
return max_combined;
@@ -2975,6 +2975,7 @@ static int ixgbe_set_channels(struct net_device *dev,
{
struct ixgbe_adapter *adapter = netdev_priv(dev);
unsigned int count = ch->combined_count;
+ u8 max_rss_indices = ixgbe_max_rss_indices(adapter);
/* verify they are not requesting separate vectors */
if (!count || ch->rx_count || ch->tx_count)
@@ -2991,9 +2992,9 @@ static int ixgbe_set_channels(struct net_device *dev,
/* update feature limits from largest to smallest supported values */
adapter->ring_feature[RING_F_FDIR].limit = count;
- /* cap RSS limit at 16 */
- if (count > IXGBE_MAX_RSS_INDICES)
- count = IXGBE_MAX_RSS_INDICES;
+ /* cap RSS limit */
+ if (count > max_rss_indices)
+ count = max_rss_indices;
adapter->ring_feature[RING_F_RSS].limit = count;
#ifdef IXGBE_FCOE
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index b519b89..eb55078 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -3217,7 +3217,9 @@ static void ixgbe_setup_reta(struct ixgbe_adapter *adapter, const u32 *seed)
struct ixgbe_hw *hw = &adapter->hw;
u32 reta = 0;
int i, j;
+ int reta_entries = 128;
u16 rss_i = adapter->ring_feature[RING_F_RSS].indices;
+ int indices_multi;
/*
* Program table for at least 2 queues w/ SR-IOV so that VFs can
@@ -3231,22 +3233,67 @@ static void ixgbe_setup_reta(struct ixgbe_adapter *adapter, const u32 *seed)
for (i = 0; i < 10; i++)
IXGBE_WRITE_REG(hw, IXGBE_RSSRK(i), seed[i]);
+ /* Fill out the redirection table as follows:
+ * 82598: 128 (8 bit wide) entries containing pair of 4 bit RSS indices
+ * 82599/X540: 128 (8 bit wide) entries containing 4 bit RSS index
+ * X550: 512 (8 bit wide) entries containing 6 bit RSS index
+ */
+ if (adapter->hw.mac.type == ixgbe_mac_82598EB)
+ indices_multi = 0x11;
+ else
+ indices_multi = 0x1;
+
+ switch (adapter->hw.mac.type) {
+ case ixgbe_mac_X550:
+ case ixgbe_mac_X550EM_x:
+ if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
+ reta_entries = 512;
+ default:
+ break;
+ }
+
/* Fill out redirection table */
- for (i = 0, j = 0; i < 128; i++, j++) {
+ for (i = 0, j = 0; i < reta_entries; i++, j++) {
+ if (j == rss_i)
+ j = 0;
+ reta = (reta << 8) | (j * indices_multi);
+ if ((i & 3) == 3) {
+ if (i < 128)
+ IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), reta);
+ else
+ IXGBE_WRITE_REG(hw, IXGBE_ERETA((i >> 2) - 32),
+ reta);
+ }
+ }
+}
+
+static void ixgbe_setup_vfreta(struct ixgbe_adapter *adapter, const u32 *seed)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ u32 vfreta = 0;
+ u16 rss_i = adapter->ring_feature[RING_F_RSS].indices;
+ unsigned int pf_pool = adapter->num_vfs;
+ int i, j;
+
+ /* Fill out hash function seeds */
+ for (i = 0; i < 10; i++)
+ IXGBE_WRITE_REG(hw, IXGBE_PFVFRSSRK(i, pf_pool), seed[i]);
+
+ /* Fill out the redirection table */
+ for (i = 0, j = 0; i < 64; i++, j++) {
if (j == rss_i)
j = 0;
- /* reta = 4-byte sliding window of
- * 0x00..(indices-1)(indices-1)00..etc. */
- reta = (reta << 8) | (j * 0x11);
+ vfreta = (vfreta << 8) | j;
if ((i & 3) == 3)
- IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), reta);
+ IXGBE_WRITE_REG(hw, IXGBE_PFVFRETA(i >> 2, pf_pool),
+ vfreta);
}
}
static void ixgbe_setup_mrqc(struct ixgbe_adapter *adapter)
{
struct ixgbe_hw *hw = &adapter->hw;
- u32 mrqc = 0, rss_field = 0;
+ u32 mrqc = 0, rss_field = 0, vfmrqc = 0;
u32 rss_key[10];
u32 rxcsum;
@@ -3292,9 +3339,24 @@ static void ixgbe_setup_mrqc(struct ixgbe_adapter *adapter)
rss_field |= IXGBE_MRQC_RSS_FIELD_IPV6_UDP;
netdev_rss_key_fill(rss_key, sizeof(rss_key));
- ixgbe_setup_reta(adapter, rss_key);
- mrqc |= rss_field;
- IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
+ if ((hw->mac.type >= ixgbe_mac_X550) &&
+ (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) {
+ unsigned int pf_pool = adapter->num_vfs;
+
+ /* Enable VF RSS mode */
+ mrqc |= IXGBE_MRQC_MULTIPLE_RSS;
+ IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
+
+ /* Setup RSS through the VF registers */
+ ixgbe_setup_vfreta(adapter, rss_key);
+ vfmrqc = IXGBE_MRQC_RSSEN;
+ vfmrqc |= rss_field;
+ IXGBE_WRITE_REG(hw, IXGBE_PFVFMRQC(pf_pool), vfmrqc);
+ } else {
+ ixgbe_setup_reta(adapter, rss_key);
+ mrqc |= rss_field;
+ IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
+ }
}
/**
@@ -5056,7 +5118,7 @@ static int ixgbe_sw_init(struct ixgbe_adapter *adapter)
hw->subsystem_device_id = pdev->subsystem_device;
/* Set common capability flags and settings */
- rss = min_t(int, IXGBE_MAX_RSS_INDICES, num_online_cpus());
+ rss = min_t(int, ixgbe_max_rss_indices(adapter), num_online_cpus());
adapter->ring_feature[RING_F_RSS].limit = rss;
adapter->flags2 |= IXGBE_FLAG2_RSC_CAPABLE;
adapter->flags2 |= IXGBE_FLAG2_RSC_ENABLED;
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
index 04eee7c..c76ba90 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
@@ -221,7 +221,8 @@ int ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
if (adapter->ring_feature[RING_F_VMDQ].limit == 1) {
adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED;
adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
- rss = min_t(int, IXGBE_MAX_RSS_INDICES, num_online_cpus());
+ rss = min_t(int, ixgbe_max_rss_indices(adapter),
+ num_online_cpus());
} else {
rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus());
}
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
index 64de20d..cc1ac04 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
@@ -297,6 +297,7 @@ struct ixgbe_thermal_sensor_data {
#define IXGBE_IMIRVP 0x05AC0
#define IXGBE_VMD_CTL 0x0581C
#define IXGBE_RETA(_i) (0x05C00 + ((_i) * 4)) /* 32 of these (0-31) */
+#define IXGBE_ERETA(_i) (0x0EE80 + ((_i) * 4)) /* 96 of these (0-95) */
#define IXGBE_RSSRK(_i) (0x05C80 + ((_i) * 4)) /* 10 of these (0-9) */
/* Registers for setting up RSS on X550 with SRIOV
@@ -2016,6 +2017,7 @@ enum {
#define IXGBE_MRQC_RSS_FIELD_IPV4_UDP 0x00400000
#define IXGBE_MRQC_RSS_FIELD_IPV6_UDP 0x00800000
#define IXGBE_MRQC_RSS_FIELD_IPV6_EX_UDP 0x01000000
+#define IXGBE_MRQC_MULTIPLE_RSS 0x00002000
#define IXGBE_MRQC_L3L4TXSWEN 0x00008000
#define IXGBE_FWSM_TS_ENABLED 0x1
--
1.9.3
--
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