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Date: Thu, 12 Feb 2009 20:36:40 +0200
From: "Eilon Greenstein" <eilong@...adcom.com>
To: "David Miller" <davem@...emloft.net>
cc: "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: [PATCH 09/41]bnx2x: BW shaper enhancements
Subject: [PATCH 09/41]bnx2x: BW shaper enhancements
Some of the configuration can be set when loading the device and shouldn't be
re-calculated after each link up indication since it is not dependent on the
link speed
Signed-off-by: Eilon Greenstein <eilong@...adcom.com>
---
drivers/net/bnx2x.h | 3 +
drivers/net/bnx2x_hsi.h | 25 ++--
drivers/net/bnx2x_main.c | 314 ++++++++++++++++++++--------------------------
3 files changed, 153 insertions(+), 189 deletions(-)
diff --git a/drivers/net/bnx2x.h b/drivers/net/bnx2x.h
index b411497..b40d4f1 100644
--- a/drivers/net/bnx2x.h
+++ b/drivers/net/bnx2x.h
@@ -883,6 +883,9 @@ struct bnx2x {
struct bnx2x_common common;
struct bnx2x_port port;
+ struct cmng_struct_per_port cmng;
+ u32 vn_weight_sum;
+
u32 mf_config;
u16 e1hov;
u8 e1hmf;
diff --git a/drivers/net/bnx2x_hsi.h b/drivers/net/bnx2x_hsi.h
index 40061b3..a4a6039 100644
--- a/drivers/net/bnx2x_hsi.h
+++ b/drivers/net/bnx2x_hsi.h
@@ -2640,17 +2640,19 @@ struct ustorm_eth_rx_producers {
*/
struct cmng_flags_per_port {
u8 con_number[NUM_OF_PROTOCOLS];
-#if defined(__BIG_ENDIAN)
- u8 fairness_enable;
- u8 rate_shaping_enable;
- u8 cmng_protocol_enable;
- u8 cmng_vn_enable;
-#elif defined(__LITTLE_ENDIAN)
- u8 cmng_vn_enable;
- u8 cmng_protocol_enable;
- u8 rate_shaping_enable;
- u8 fairness_enable;
-#endif
+ u32 cmng_enables;
+#define CMNG_FLAGS_PER_PORT_FAIRNESS_VN (0x1<<0)
+#define CMNG_FLAGS_PER_PORT_FAIRNESS_VN_SHIFT 0
+#define CMNG_FLAGS_PER_PORT_RATE_SHAPING_VN (0x1<<1)
+#define CMNG_FLAGS_PER_PORT_RATE_SHAPING_VN_SHIFT 1
+#define CMNG_FLAGS_PER_PORT_FAIRNESS_PROTOCOL (0x1<<2)
+#define CMNG_FLAGS_PER_PORT_FAIRNESS_PROTOCOL_SHIFT 2
+#define CMNG_FLAGS_PER_PORT_RATE_SHAPING_PROTOCOL (0x1<<3)
+#define CMNG_FLAGS_PER_PORT_RATE_SHAPING_PROTOCOL_SHIFT 3
+#define CMNG_FLAGS_PER_PORT_FAIRNESS_COS (0x1<<4)
+#define CMNG_FLAGS_PER_PORT_FAIRNESS_COS_SHIFT 4
+#define __CMNG_FLAGS_PER_PORT_RESERVED0 (0x7FFFFFF<<5)
+#define __CMNG_FLAGS_PER_PORT_RESERVED0_SHIFT 5
};
@@ -2803,6 +2805,7 @@ struct eth_stats_query {
* per-vnic fairness variables
*/
struct fairness_vars_per_vn {
+ u32 cos_credit_delta[MAX_COS_NUMBER];
u32 protocol_credit_delta[NUM_OF_PROTOCOLS];
u32 vn_credit_delta;
u32 __reserved0;
diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c
index 891a3fb..ce55e84 100644
--- a/drivers/net/bnx2x_main.c
+++ b/drivers/net/bnx2x_main.c
@@ -2054,119 +2054,42 @@ static u8 bnx2x_link_test(struct bnx2x *bp)
return rc;
}
-/* Calculates the sum of vn_min_rates.
- It's needed for further normalizing of the min_rates.
-
- Returns:
- sum of vn_min_rates
- or
- 0 - if all the min_rates are 0.
- In the later case fairness algorithm should be deactivated.
- If not all min_rates are zero then those that are zeroes will
- be set to 1.
- */
-static u32 bnx2x_calc_vn_wsum(struct bnx2x *bp)
+static void bnx2x_init_port_minmax(struct bnx2x *bp)
{
- int i, port = BP_PORT(bp);
- u32 wsum = 0;
- int all_zero = 1;
+ u32 r_param = bp->link_vars.line_speed / 8;
+ u32 fair_periodic_timeout_usec;
+ u32 t_fair;
- for (i = 0; i < E1HVN_MAX; i++) {
- u32 vn_cfg =
- SHMEM_RD(bp, mf_cfg.func_mf_config[2*i + port].config);
- u32 vn_min_rate = ((vn_cfg & FUNC_MF_CFG_MIN_BW_MASK) >>
- FUNC_MF_CFG_MIN_BW_SHIFT) * 100;
- if (!(vn_cfg & FUNC_MF_CFG_FUNC_HIDE)) {
- /* If min rate is zero - set it to 1 */
- if (!vn_min_rate)
- vn_min_rate = DEF_MIN_RATE;
- else
- all_zero = 0;
-
- wsum += vn_min_rate;
- }
- }
+ memset(&(bp->cmng.rs_vars), 0,
+ sizeof(struct rate_shaping_vars_per_port));
+ memset(&(bp->cmng.fair_vars), 0, sizeof(struct fairness_vars_per_port));
- /* ... only if all min rates are zeros - disable FAIRNESS */
- if (all_zero)
- return 0;
-
- return wsum;
-}
-
-static void bnx2x_init_port_minmax(struct bnx2x *bp,
- int en_fness,
- u16 port_rate,
- struct cmng_struct_per_port *m_cmng_port)
-{
- u32 r_param = port_rate / 8;
- int port = BP_PORT(bp);
- int i;
-
- memset(m_cmng_port, 0, sizeof(struct cmng_struct_per_port));
-
- /* Enable minmax only if we are in e1hmf mode */
- if (IS_E1HMF(bp)) {
- u32 fair_periodic_timeout_usec;
- u32 t_fair;
-
- /* Enable rate shaping and fairness */
- m_cmng_port->flags.cmng_vn_enable = 1;
- m_cmng_port->flags.fairness_enable = en_fness ? 1 : 0;
- m_cmng_port->flags.rate_shaping_enable = 1;
+ /* 100 usec in SDM ticks = 25 since each tick is 4 usec */
+ bp->cmng.rs_vars.rs_periodic_timeout = RS_PERIODIC_TIMEOUT_USEC / 4;
- if (!en_fness)
- DP(NETIF_MSG_IFUP, "All MIN values are zeroes"
- " fairness will be disabled\n");
-
- /* 100 usec in SDM ticks = 25 since each tick is 4 usec */
- m_cmng_port->rs_vars.rs_periodic_timeout =
- RS_PERIODIC_TIMEOUT_USEC / 4;
-
- /* this is the threshold below which no timer arming will occur
- 1.25 coefficient is for the threshold to be a little bigger
- than the real time, to compensate for timer in-accuracy */
- m_cmng_port->rs_vars.rs_threshold =
+ /* this is the threshold below which no timer arming will occur
+ 1.25 coefficient is for the threshold to be a little bigger
+ than the real time, to compensate for timer in-accuracy */
+ bp->cmng.rs_vars.rs_threshold =
(RS_PERIODIC_TIMEOUT_USEC * r_param * 5) / 4;
- /* resolution of fairness timer */
- fair_periodic_timeout_usec = QM_ARB_BYTES / r_param;
- /* for 10G it is 1000usec. for 1G it is 10000usec. */
- t_fair = T_FAIR_COEF / port_rate;
+ /* resolution of fairness timer */
+ fair_periodic_timeout_usec = QM_ARB_BYTES / r_param;
+ /* for 10G it is 1000usec. for 1G it is 10000usec. */
+ t_fair = T_FAIR_COEF / bp->link_vars.line_speed;
- /* this is the threshold below which we won't arm
- the timer anymore */
- m_cmng_port->fair_vars.fair_threshold = QM_ARB_BYTES;
-
- /* we multiply by 1e3/8 to get bytes/msec.
- We don't want the credits to pass a credit
- of the T_FAIR*FAIR_MEM (algorithm resolution) */
- m_cmng_port->fair_vars.upper_bound =
- r_param * t_fair * FAIR_MEM;
- /* since each tick is 4 usec */
- m_cmng_port->fair_vars.fairness_timeout =
- fair_periodic_timeout_usec / 4;
-
- } else {
- /* Disable rate shaping and fairness */
- m_cmng_port->flags.cmng_vn_enable = 0;
- m_cmng_port->flags.fairness_enable = 0;
- m_cmng_port->flags.rate_shaping_enable = 0;
+ /* this is the threshold below which we won't arm the timer anymore */
+ bp->cmng.fair_vars.fair_threshold = QM_ARB_BYTES;
- DP(NETIF_MSG_IFUP,
- "Single function mode minmax will be disabled\n");
- }
-
- /* Store it to internal memory */
- for (i = 0; i < sizeof(struct cmng_struct_per_port) / 4; i++)
- REG_WR(bp, BAR_XSTRORM_INTMEM +
- XSTORM_CMNG_PER_PORT_VARS_OFFSET(port) + i * 4,
- ((u32 *)(m_cmng_port))[i]);
+ /* we multiply by 1e3/8 to get bytes/msec.
+ We don't want the credits to pass a credit
+ of the t_fair*FAIR_MEM (algorithm resolution) */
+ bp->cmng.fair_vars.upper_bound = r_param * t_fair * FAIR_MEM;
+ /* since each tick is 4 usec */
+ bp->cmng.fair_vars.fairness_timeout = fair_periodic_timeout_usec / 4;
}
-static void bnx2x_init_vn_minmax(struct bnx2x *bp, int func,
- u32 wsum, u16 port_rate,
- struct cmng_struct_per_port *m_cmng_port)
+static void bnx2x_init_vn_minmax(struct bnx2x *bp, int func)
{
struct rate_shaping_vars_per_vn m_rs_vn;
struct fairness_vars_per_vn m_fair_vn;
@@ -2182,17 +2105,18 @@ static void bnx2x_init_vn_minmax(struct bnx2x *bp, int func,
} else {
vn_min_rate = ((vn_cfg & FUNC_MF_CFG_MIN_BW_MASK) >>
FUNC_MF_CFG_MIN_BW_SHIFT) * 100;
- /* If FAIRNESS is enabled (not all min rates are zeroes) and
+ /* If fairness is enabled (not all min rates are zeroes) and
if current min rate is zero - set it to 1.
This is a requirement of the algorithm. */
- if ((vn_min_rate == 0) && wsum)
+ if (bp->vn_weight_sum && (vn_min_rate == 0))
vn_min_rate = DEF_MIN_RATE;
vn_max_rate = ((vn_cfg & FUNC_MF_CFG_MAX_BW_MASK) >>
FUNC_MF_CFG_MAX_BW_SHIFT) * 100;
}
- DP(NETIF_MSG_IFUP, "func %d: vn_min_rate=%d vn_max_rate=%d "
- "wsum=%d\n", func, vn_min_rate, vn_max_rate, wsum);
+ DP(NETIF_MSG_IFUP,
+ "func %d: vn_min_rate=%d vn_max_rate=%d vn_weight_sum=%d\n",
+ func, vn_min_rate, vn_max_rate, bp->vn_weight_sum);
memset(&m_rs_vn, 0, sizeof(struct rate_shaping_vars_per_vn));
memset(&m_fair_vn, 0, sizeof(struct fairness_vars_per_vn));
@@ -2204,55 +2128,20 @@ static void bnx2x_init_vn_minmax(struct bnx2x *bp, int func,
m_rs_vn.vn_counter.quota =
(vn_max_rate * RS_PERIODIC_TIMEOUT_USEC) / 8;
-#ifdef BNX2X_PER_PROT_QOS
- /* per protocol counter */
- for (protocol = 0; protocol < NUM_OF_PROTOCOLS; protocol++) {
- /* maximal Mbps for this protocol */
- m_rs_vn.protocol_counters[protocol].rate =
- protocol_max_rate[protocol];
- /* the quota in each timer period -
- number of bytes transmitted in this period */
- m_rs_vn.protocol_counters[protocol].quota =
- (u32)(rs_periodic_timeout_usec *
- ((double)m_rs_vn.
- protocol_counters[protocol].rate/8));
- }
-#endif
-
- if (wsum) {
+ if (bp->vn_weight_sum) {
/* credit for each period of the fairness algorithm:
number of bytes in T_FAIR (the vn share the port rate).
- wsum should not be larger than 10000, thus
- T_FAIR_COEF / (8 * wsum) will always be grater than zero */
+ vn_weight_sum should not be larger than 10000, thus
+ T_FAIR_COEF / (8 * vn_weight_sum) will always be greater
+ than zero */
m_fair_vn.vn_credit_delta =
- max((u64)(vn_min_rate * (T_FAIR_COEF / (8 * wsum))),
- (u64)(m_cmng_port->fair_vars.fair_threshold * 2));
+ max((u32)(vn_min_rate * (T_FAIR_COEF /
+ (8 * bp->vn_weight_sum))),
+ (u32)(bp->cmng.fair_vars.fair_threshold * 2));
DP(NETIF_MSG_IFUP, "m_fair_vn.vn_credit_delta=%d\n",
m_fair_vn.vn_credit_delta);
}
-#ifdef BNX2X_PER_PROT_QOS
- do {
- u32 protocolWeightSum = 0;
-
- for (protocol = 0; protocol < NUM_OF_PROTOCOLS; protocol++)
- protocolWeightSum +=
- drvInit.protocol_min_rate[protocol];
- /* per protocol counter -
- NOT NEEDED IF NO PER-PROTOCOL CONGESTION MANAGEMENT */
- if (protocolWeightSum > 0) {
- for (protocol = 0;
- protocol < NUM_OF_PROTOCOLS; protocol++)
- /* credit for each period of the
- fairness algorithm - number of bytes in
- T_FAIR (the protocol share the vn rate) */
- m_fair_vn.protocol_credit_delta[protocol] =
- (u32)((vn_min_rate / 8) * t_fair *
- protocol_min_rate / protocolWeightSum);
- }
- } while (0);
-#endif
-
/* Store it to internal memory */
for (i = 0; i < sizeof(struct rate_shaping_vars_per_vn)/4; i++)
REG_WR(bp, BAR_XSTRORM_INTMEM +
@@ -2265,11 +2154,10 @@ static void bnx2x_init_vn_minmax(struct bnx2x *bp, int func,
((u32 *)(&m_fair_vn))[i]);
}
+
/* This function is called upon link interrupt */
static void bnx2x_link_attn(struct bnx2x *bp)
{
- int vn;
-
/* Make sure that we are synced with the current statistics */
bnx2x_stats_handle(bp, STATS_EVENT_STOP);
@@ -2294,36 +2182,38 @@ static void bnx2x_link_attn(struct bnx2x *bp)
bnx2x_link_report(bp);
if (IS_E1HMF(bp)) {
+ int port = BP_PORT(bp);
int func;
+ int vn;
for (vn = VN_0; vn < E1HVN_MAX; vn++) {
if (vn == BP_E1HVN(bp))
continue;
- func = ((vn << 1) | BP_PORT(bp));
+ func = ((vn << 1) | port);
/* Set the attention towards other drivers
on the same port */
REG_WR(bp, MISC_REG_AEU_GENERAL_ATTN_0 +
(LINK_SYNC_ATTENTION_BIT_FUNC_0 + func)*4, 1);
}
- }
- if (CHIP_IS_E1H(bp) && (bp->link_vars.line_speed > 0)) {
- struct cmng_struct_per_port m_cmng_port;
- u32 wsum;
- int port = BP_PORT(bp);
+ if (bp->link_vars.link_up) {
+ int i;
+
+ /* Init rate shaping and fairness contexts */
+ bnx2x_init_port_minmax(bp);
- /* Init RATE SHAPING and FAIRNESS contexts */
- wsum = bnx2x_calc_vn_wsum(bp);
- bnx2x_init_port_minmax(bp, (int)wsum,
- bp->link_vars.line_speed,
- &m_cmng_port);
- if (IS_E1HMF(bp))
for (vn = VN_0; vn < E1HVN_MAX; vn++)
- bnx2x_init_vn_minmax(bp, 2*vn + port,
- wsum, bp->link_vars.line_speed,
- &m_cmng_port);
+ bnx2x_init_vn_minmax(bp, 2*vn + port);
+
+ /* Store it to internal memory */
+ for (i = 0;
+ i < sizeof(struct cmng_struct_per_port) / 4; i++)
+ REG_WR(bp, BAR_XSTRORM_INTMEM +
+ XSTORM_CMNG_PER_PORT_VARS_OFFSET(port) + i*4,
+ ((u32 *)(&bp->cmng))[i]);
+ }
}
}
@@ -4848,6 +4738,47 @@ static void bnx2x_init_internal_port(struct bnx2x *bp)
REG_WR(bp, BAR_XSTRORM_INTMEM + XSTORM_HC_BTR_OFFSET(port), BNX2X_BTR);
}
+/* Calculates the sum of vn_min_rates.
+ It's needed for further normalizing of the min_rates.
+ Returns:
+ sum of vn_min_rates.
+ or
+ 0 - if all the min_rates are 0.
+ In the later case fainess algorithm should be deactivated.
+ If not all min_rates are zero then those that are zeroes will be set to 1.
+ */
+static void bnx2x_calc_vn_weight_sum(struct bnx2x *bp)
+{
+ int all_zero = 1;
+ int port = BP_PORT(bp);
+ int vn;
+
+ bp->vn_weight_sum = 0;
+ for (vn = VN_0; vn < E1HVN_MAX; vn++) {
+ int func = 2*vn + port;
+ u32 vn_cfg =
+ SHMEM_RD(bp, mf_cfg.func_mf_config[func].config);
+ u32 vn_min_rate = ((vn_cfg & FUNC_MF_CFG_MIN_BW_MASK) >>
+ FUNC_MF_CFG_MIN_BW_SHIFT) * 100;
+
+ /* Skip hidden vns */
+ if (vn_cfg & FUNC_MF_CFG_FUNC_HIDE)
+ continue;
+
+ /* If min rate is zero - set it to 1 */
+ if (!vn_min_rate)
+ vn_min_rate = DEF_MIN_RATE;
+ else
+ all_zero = 0;
+
+ bp->vn_weight_sum += vn_min_rate;
+ }
+
+ /* ... only if all min rates are zeros - disable fairness */
+ if (all_zero)
+ bp->vn_weight_sum = 0;
+}
+
static void bnx2x_init_internal_func(struct bnx2x *bp)
{
struct tstorm_eth_function_common_config tstorm_config = {0};
@@ -4977,6 +4908,45 @@ static void bnx2x_init_internal_func(struct bnx2x *bp)
USTORM_MAX_AGG_SIZE_OFFSET(port, FP_CL_ID(fp)),
max_agg_size);
}
+
+ memset(&(bp->cmng), 0, sizeof(struct cmng_struct_per_port));
+
+ /* Init rate shaping and fairness contexts */
+ if (IS_E1HMF(bp)) {
+ int vn;
+
+ /* During init there is no active link
+ Until link is up, set link rate to 10Gbps */
+ bp->link_vars.line_speed = SPEED_10000;
+ bnx2x_init_port_minmax(bp);
+
+ bnx2x_calc_vn_weight_sum(bp);
+
+ for (vn = VN_0; vn < E1HVN_MAX; vn++)
+ bnx2x_init_vn_minmax(bp, 2*vn + port);
+
+ /* Enable rate shaping and fairness */
+ bp->cmng.flags.cmng_enables =
+ CMNG_FLAGS_PER_PORT_RATE_SHAPING_VN;
+ if (bp->vn_weight_sum)
+ bp->cmng.flags.cmng_enables |=
+ CMNG_FLAGS_PER_PORT_FAIRNESS_VN;
+ else
+ DP(NETIF_MSG_IFUP, "All MIN values are zeroes"
+ " fairness will be disabled\n");
+ } else {
+ /* rate shaping and fairness are disabled */
+ DP(NETIF_MSG_IFUP,
+ "single function mode minmax will be disabled\n");
+ }
+
+
+ /* Store it to internal memory */
+ if (bp->port.pmf)
+ for (i = 0; i < sizeof(struct cmng_struct_per_port) / 4; i++)
+ REG_WR(bp, BAR_XSTRORM_INTMEM +
+ XSTORM_CMNG_PER_PORT_VARS_OFFSET(port) + i * 4,
+ ((u32 *)(&bp->cmng))[i]);
}
static void bnx2x_init_internal(struct bnx2x *bp, u32 load_code)
@@ -5780,22 +5750,10 @@ static int bnx2x_init_port(struct bnx2x *bp)
REG_WR(bp, NIG_REG_XGXS_SERDES0_MODE_SEL + port*4, 1);
if (CHIP_IS_E1H(bp)) {
- u32 wsum;
- struct cmng_struct_per_port m_cmng_port;
- int vn;
-
/* 0x2 disable e1hov, 0x1 enable */
REG_WR(bp, NIG_REG_LLH0_BRB1_DRV_MASK_MF + port*4,
(IS_E1HMF(bp) ? 0x1 : 0x2));
- /* Init RATE SHAPING and FAIRNESS contexts.
- Initialize as if there is 10G link. */
- wsum = bnx2x_calc_vn_wsum(bp);
- bnx2x_init_port_minmax(bp, (int)wsum, 10000, &m_cmng_port);
- if (IS_E1HMF(bp))
- for (vn = VN_0; vn < E1HVN_MAX; vn++)
- bnx2x_init_vn_minmax(bp, 2*vn + port,
- wsum, 10000, &m_cmng_port);
}
/* Port MCP comes here */
--
1.5.4.3
--
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