forked from luck/tmp_suning_uos_patched
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@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eilon Greenstein
David S. Miller
parent
748e543974
commit
8a1c38d17d
@ -883,6 +883,9 @@ struct bnx2x {
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struct bnx2x_common common;
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struct bnx2x_port port;
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struct cmng_struct_per_port cmng;
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u32 vn_weight_sum;
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u32 mf_config;
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u16 e1hov;
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u8 e1hmf;
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@ -2640,17 +2640,19 @@ struct ustorm_eth_rx_producers {
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*/
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struct cmng_flags_per_port {
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u8 con_number[NUM_OF_PROTOCOLS];
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#if defined(__BIG_ENDIAN)
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u8 fairness_enable;
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u8 rate_shaping_enable;
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u8 cmng_protocol_enable;
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u8 cmng_vn_enable;
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#elif defined(__LITTLE_ENDIAN)
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u8 cmng_vn_enable;
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u8 cmng_protocol_enable;
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u8 rate_shaping_enable;
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u8 fairness_enable;
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#endif
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u32 cmng_enables;
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#define CMNG_FLAGS_PER_PORT_FAIRNESS_VN (0x1<<0)
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#define CMNG_FLAGS_PER_PORT_FAIRNESS_VN_SHIFT 0
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#define CMNG_FLAGS_PER_PORT_RATE_SHAPING_VN (0x1<<1)
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#define CMNG_FLAGS_PER_PORT_RATE_SHAPING_VN_SHIFT 1
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#define CMNG_FLAGS_PER_PORT_FAIRNESS_PROTOCOL (0x1<<2)
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#define CMNG_FLAGS_PER_PORT_FAIRNESS_PROTOCOL_SHIFT 2
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#define CMNG_FLAGS_PER_PORT_RATE_SHAPING_PROTOCOL (0x1<<3)
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#define CMNG_FLAGS_PER_PORT_RATE_SHAPING_PROTOCOL_SHIFT 3
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#define CMNG_FLAGS_PER_PORT_FAIRNESS_COS (0x1<<4)
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#define CMNG_FLAGS_PER_PORT_FAIRNESS_COS_SHIFT 4
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#define __CMNG_FLAGS_PER_PORT_RESERVED0 (0x7FFFFFF<<5)
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#define __CMNG_FLAGS_PER_PORT_RESERVED0_SHIFT 5
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};
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@ -2803,6 +2805,7 @@ struct eth_stats_query {
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* per-vnic fairness variables
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*/
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struct fairness_vars_per_vn {
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u32 cos_credit_delta[MAX_COS_NUMBER];
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u32 protocol_credit_delta[NUM_OF_PROTOCOLS];
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u32 vn_credit_delta;
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u32 __reserved0;
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@ -2054,119 +2054,42 @@ static u8 bnx2x_link_test(struct bnx2x *bp)
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return rc;
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}
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/* Calculates the sum of vn_min_rates.
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It's needed for further normalizing of the min_rates.
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Returns:
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sum of vn_min_rates
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or
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0 - if all the min_rates are 0.
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In the later case fairness algorithm should be deactivated.
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If not all min_rates are zero then those that are zeroes will
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be set to 1.
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*/
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static u32 bnx2x_calc_vn_wsum(struct bnx2x *bp)
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static void bnx2x_init_port_minmax(struct bnx2x *bp)
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{
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int i, port = BP_PORT(bp);
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u32 wsum = 0;
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int all_zero = 1;
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u32 r_param = bp->link_vars.line_speed / 8;
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u32 fair_periodic_timeout_usec;
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u32 t_fair;
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for (i = 0; i < E1HVN_MAX; i++) {
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u32 vn_cfg =
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SHMEM_RD(bp, mf_cfg.func_mf_config[2*i + port].config);
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u32 vn_min_rate = ((vn_cfg & FUNC_MF_CFG_MIN_BW_MASK) >>
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FUNC_MF_CFG_MIN_BW_SHIFT) * 100;
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if (!(vn_cfg & FUNC_MF_CFG_FUNC_HIDE)) {
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/* If min rate is zero - set it to 1 */
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if (!vn_min_rate)
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vn_min_rate = DEF_MIN_RATE;
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else
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all_zero = 0;
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memset(&(bp->cmng.rs_vars), 0,
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sizeof(struct rate_shaping_vars_per_port));
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memset(&(bp->cmng.fair_vars), 0, sizeof(struct fairness_vars_per_port));
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wsum += vn_min_rate;
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}
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}
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/* 100 usec in SDM ticks = 25 since each tick is 4 usec */
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bp->cmng.rs_vars.rs_periodic_timeout = RS_PERIODIC_TIMEOUT_USEC / 4;
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/* ... only if all min rates are zeros - disable FAIRNESS */
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if (all_zero)
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return 0;
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return wsum;
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}
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static void bnx2x_init_port_minmax(struct bnx2x *bp,
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int en_fness,
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u16 port_rate,
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struct cmng_struct_per_port *m_cmng_port)
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{
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u32 r_param = port_rate / 8;
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int port = BP_PORT(bp);
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int i;
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memset(m_cmng_port, 0, sizeof(struct cmng_struct_per_port));
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/* Enable minmax only if we are in e1hmf mode */
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if (IS_E1HMF(bp)) {
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u32 fair_periodic_timeout_usec;
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u32 t_fair;
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/* Enable rate shaping and fairness */
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m_cmng_port->flags.cmng_vn_enable = 1;
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m_cmng_port->flags.fairness_enable = en_fness ? 1 : 0;
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m_cmng_port->flags.rate_shaping_enable = 1;
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if (!en_fness)
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DP(NETIF_MSG_IFUP, "All MIN values are zeroes"
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" fairness will be disabled\n");
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/* 100 usec in SDM ticks = 25 since each tick is 4 usec */
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m_cmng_port->rs_vars.rs_periodic_timeout =
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RS_PERIODIC_TIMEOUT_USEC / 4;
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/* this is the threshold below which no timer arming will occur
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1.25 coefficient is for the threshold to be a little bigger
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than the real time, to compensate for timer in-accuracy */
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m_cmng_port->rs_vars.rs_threshold =
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/* this is the threshold below which no timer arming will occur
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1.25 coefficient is for the threshold to be a little bigger
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than the real time, to compensate for timer in-accuracy */
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bp->cmng.rs_vars.rs_threshold =
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(RS_PERIODIC_TIMEOUT_USEC * r_param * 5) / 4;
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/* resolution of fairness timer */
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fair_periodic_timeout_usec = QM_ARB_BYTES / r_param;
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/* for 10G it is 1000usec. for 1G it is 10000usec. */
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t_fair = T_FAIR_COEF / port_rate;
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/* resolution of fairness timer */
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fair_periodic_timeout_usec = QM_ARB_BYTES / r_param;
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/* for 10G it is 1000usec. for 1G it is 10000usec. */
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t_fair = T_FAIR_COEF / bp->link_vars.line_speed;
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/* this is the threshold below which we won't arm
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the timer anymore */
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m_cmng_port->fair_vars.fair_threshold = QM_ARB_BYTES;
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/* this is the threshold below which we won't arm the timer anymore */
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bp->cmng.fair_vars.fair_threshold = QM_ARB_BYTES;
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/* we multiply by 1e3/8 to get bytes/msec.
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We don't want the credits to pass a credit
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of the T_FAIR*FAIR_MEM (algorithm resolution) */
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m_cmng_port->fair_vars.upper_bound =
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r_param * t_fair * FAIR_MEM;
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/* since each tick is 4 usec */
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m_cmng_port->fair_vars.fairness_timeout =
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fair_periodic_timeout_usec / 4;
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} else {
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/* Disable rate shaping and fairness */
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m_cmng_port->flags.cmng_vn_enable = 0;
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m_cmng_port->flags.fairness_enable = 0;
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m_cmng_port->flags.rate_shaping_enable = 0;
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DP(NETIF_MSG_IFUP,
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"Single function mode minmax will be disabled\n");
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}
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/* Store it to internal memory */
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for (i = 0; i < sizeof(struct cmng_struct_per_port) / 4; i++)
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REG_WR(bp, BAR_XSTRORM_INTMEM +
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XSTORM_CMNG_PER_PORT_VARS_OFFSET(port) + i * 4,
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((u32 *)(m_cmng_port))[i]);
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/* we multiply by 1e3/8 to get bytes/msec.
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We don't want the credits to pass a credit
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of the t_fair*FAIR_MEM (algorithm resolution) */
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bp->cmng.fair_vars.upper_bound = r_param * t_fair * FAIR_MEM;
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/* since each tick is 4 usec */
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bp->cmng.fair_vars.fairness_timeout = fair_periodic_timeout_usec / 4;
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}
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static void bnx2x_init_vn_minmax(struct bnx2x *bp, int func,
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u32 wsum, u16 port_rate,
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struct cmng_struct_per_port *m_cmng_port)
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static void bnx2x_init_vn_minmax(struct bnx2x *bp, int func)
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{
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struct rate_shaping_vars_per_vn m_rs_vn;
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struct fairness_vars_per_vn m_fair_vn;
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@ -2182,17 +2105,18 @@ static void bnx2x_init_vn_minmax(struct bnx2x *bp, int func,
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} else {
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vn_min_rate = ((vn_cfg & FUNC_MF_CFG_MIN_BW_MASK) >>
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FUNC_MF_CFG_MIN_BW_SHIFT) * 100;
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/* If FAIRNESS is enabled (not all min rates are zeroes) and
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/* If fairness is enabled (not all min rates are zeroes) and
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if current min rate is zero - set it to 1.
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This is a requirement of the algorithm. */
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if ((vn_min_rate == 0) && wsum)
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if (bp->vn_weight_sum && (vn_min_rate == 0))
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vn_min_rate = DEF_MIN_RATE;
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vn_max_rate = ((vn_cfg & FUNC_MF_CFG_MAX_BW_MASK) >>
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FUNC_MF_CFG_MAX_BW_SHIFT) * 100;
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}
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DP(NETIF_MSG_IFUP, "func %d: vn_min_rate=%d vn_max_rate=%d "
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"wsum=%d\n", func, vn_min_rate, vn_max_rate, wsum);
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DP(NETIF_MSG_IFUP,
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"func %d: vn_min_rate=%d vn_max_rate=%d vn_weight_sum=%d\n",
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func, vn_min_rate, vn_max_rate, bp->vn_weight_sum);
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memset(&m_rs_vn, 0, sizeof(struct rate_shaping_vars_per_vn));
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memset(&m_fair_vn, 0, sizeof(struct fairness_vars_per_vn));
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@ -2204,55 +2128,20 @@ static void bnx2x_init_vn_minmax(struct bnx2x *bp, int func,
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m_rs_vn.vn_counter.quota =
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(vn_max_rate * RS_PERIODIC_TIMEOUT_USEC) / 8;
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#ifdef BNX2X_PER_PROT_QOS
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/* per protocol counter */
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for (protocol = 0; protocol < NUM_OF_PROTOCOLS; protocol++) {
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/* maximal Mbps for this protocol */
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m_rs_vn.protocol_counters[protocol].rate =
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protocol_max_rate[protocol];
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/* the quota in each timer period -
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number of bytes transmitted in this period */
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m_rs_vn.protocol_counters[protocol].quota =
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(u32)(rs_periodic_timeout_usec *
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((double)m_rs_vn.
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protocol_counters[protocol].rate/8));
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}
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#endif
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if (wsum) {
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if (bp->vn_weight_sum) {
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/* credit for each period of the fairness algorithm:
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number of bytes in T_FAIR (the vn share the port rate).
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wsum should not be larger than 10000, thus
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T_FAIR_COEF / (8 * wsum) will always be grater than zero */
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vn_weight_sum should not be larger than 10000, thus
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T_FAIR_COEF / (8 * vn_weight_sum) will always be greater
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than zero */
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m_fair_vn.vn_credit_delta =
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max((u64)(vn_min_rate * (T_FAIR_COEF / (8 * wsum))),
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(u64)(m_cmng_port->fair_vars.fair_threshold * 2));
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max((u32)(vn_min_rate * (T_FAIR_COEF /
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(8 * bp->vn_weight_sum))),
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(u32)(bp->cmng.fair_vars.fair_threshold * 2));
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DP(NETIF_MSG_IFUP, "m_fair_vn.vn_credit_delta=%d\n",
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m_fair_vn.vn_credit_delta);
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}
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#ifdef BNX2X_PER_PROT_QOS
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do {
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u32 protocolWeightSum = 0;
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for (protocol = 0; protocol < NUM_OF_PROTOCOLS; protocol++)
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protocolWeightSum +=
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drvInit.protocol_min_rate[protocol];
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/* per protocol counter -
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NOT NEEDED IF NO PER-PROTOCOL CONGESTION MANAGEMENT */
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if (protocolWeightSum > 0) {
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for (protocol = 0;
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protocol < NUM_OF_PROTOCOLS; protocol++)
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/* credit for each period of the
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fairness algorithm - number of bytes in
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T_FAIR (the protocol share the vn rate) */
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m_fair_vn.protocol_credit_delta[protocol] =
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(u32)((vn_min_rate / 8) * t_fair *
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protocol_min_rate / protocolWeightSum);
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}
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} while (0);
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#endif
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/* Store it to internal memory */
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for (i = 0; i < sizeof(struct rate_shaping_vars_per_vn)/4; i++)
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REG_WR(bp, BAR_XSTRORM_INTMEM +
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@ -2265,11 +2154,10 @@ static void bnx2x_init_vn_minmax(struct bnx2x *bp, int func,
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((u32 *)(&m_fair_vn))[i]);
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}
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/* This function is called upon link interrupt */
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static void bnx2x_link_attn(struct bnx2x *bp)
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{
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int vn;
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/* Make sure that we are synced with the current statistics */
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bnx2x_stats_handle(bp, STATS_EVENT_STOP);
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@ -2294,36 +2182,38 @@ static void bnx2x_link_attn(struct bnx2x *bp)
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bnx2x_link_report(bp);
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if (IS_E1HMF(bp)) {
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int port = BP_PORT(bp);
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int func;
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int vn;
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for (vn = VN_0; vn < E1HVN_MAX; vn++) {
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if (vn == BP_E1HVN(bp))
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continue;
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func = ((vn << 1) | BP_PORT(bp));
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func = ((vn << 1) | port);
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/* Set the attention towards other drivers
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on the same port */
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REG_WR(bp, MISC_REG_AEU_GENERAL_ATTN_0 +
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(LINK_SYNC_ATTENTION_BIT_FUNC_0 + func)*4, 1);
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}
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}
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if (CHIP_IS_E1H(bp) && (bp->link_vars.line_speed > 0)) {
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struct cmng_struct_per_port m_cmng_port;
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u32 wsum;
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int port = BP_PORT(bp);
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if (bp->link_vars.link_up) {
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int i;
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/* Init rate shaping and fairness contexts */
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bnx2x_init_port_minmax(bp);
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/* Init RATE SHAPING and FAIRNESS contexts */
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wsum = bnx2x_calc_vn_wsum(bp);
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bnx2x_init_port_minmax(bp, (int)wsum,
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bp->link_vars.line_speed,
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&m_cmng_port);
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if (IS_E1HMF(bp))
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for (vn = VN_0; vn < E1HVN_MAX; vn++)
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bnx2x_init_vn_minmax(bp, 2*vn + port,
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wsum, bp->link_vars.line_speed,
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&m_cmng_port);
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bnx2x_init_vn_minmax(bp, 2*vn + port);
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/* Store it to internal memory */
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for (i = 0;
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i < sizeof(struct cmng_struct_per_port) / 4; i++)
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REG_WR(bp, BAR_XSTRORM_INTMEM +
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XSTORM_CMNG_PER_PORT_VARS_OFFSET(port) + i*4,
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((u32 *)(&bp->cmng))[i]);
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}
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}
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}
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@ -4848,6 +4738,47 @@ static void bnx2x_init_internal_port(struct bnx2x *bp)
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REG_WR(bp, BAR_XSTRORM_INTMEM + XSTORM_HC_BTR_OFFSET(port), BNX2X_BTR);
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}
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/* Calculates the sum of vn_min_rates.
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It's needed for further normalizing of the min_rates.
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Returns:
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sum of vn_min_rates.
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or
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0 - if all the min_rates are 0.
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In the later case fainess algorithm should be deactivated.
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If not all min_rates are zero then those that are zeroes will be set to 1.
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*/
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static void bnx2x_calc_vn_weight_sum(struct bnx2x *bp)
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{
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int all_zero = 1;
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int port = BP_PORT(bp);
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int vn;
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bp->vn_weight_sum = 0;
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for (vn = VN_0; vn < E1HVN_MAX; vn++) {
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int func = 2*vn + port;
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u32 vn_cfg =
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SHMEM_RD(bp, mf_cfg.func_mf_config[func].config);
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u32 vn_min_rate = ((vn_cfg & FUNC_MF_CFG_MIN_BW_MASK) >>
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FUNC_MF_CFG_MIN_BW_SHIFT) * 100;
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/* Skip hidden vns */
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if (vn_cfg & FUNC_MF_CFG_FUNC_HIDE)
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continue;
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/* If min rate is zero - set it to 1 */
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if (!vn_min_rate)
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vn_min_rate = DEF_MIN_RATE;
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else
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all_zero = 0;
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bp->vn_weight_sum += vn_min_rate;
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}
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/* ... only if all min rates are zeros - disable fairness */
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if (all_zero)
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bp->vn_weight_sum = 0;
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}
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static void bnx2x_init_internal_func(struct bnx2x *bp)
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{
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struct tstorm_eth_function_common_config tstorm_config = {0};
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@ -4977,6 +4908,45 @@ static void bnx2x_init_internal_func(struct bnx2x *bp)
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USTORM_MAX_AGG_SIZE_OFFSET(port, FP_CL_ID(fp)),
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max_agg_size);
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}
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|
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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 */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user