openbcm

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l3.c (4548B)

      1 /*
      2  * 
      3  * This license is set out in https://raw.githubusercontent.com/Broadcom-Network-Switching-Software/OpenBCM/master/Legal/LICENSE file.
      4  * 
      5  * Copyright 2007-2019 Broadcom Inc. All rights reserved.
      6  *
      7  * File:    l3.c
      8  * Purpose: Greyhound2 L3 function implementations
      9  */
     10 
     11 #include <soc/defs.h>
     12 #include <sal/core/libc.h>
     13 
     14 #if defined(BCM_GREYHOUND2_SUPPORT) && defined(INCLUDE_L3)
     15 #include <bcm/l3.h>
     16 #include <bcm_int/esw/triumph2.h>
     17 #include <bcm_int/esw/greyhound2.h>
     18 
     19 /*
     20  * Function:
     21  *    bcmi_gh2_l3_intf_qos_set
     22  * Purpose:
     23  *    Set L3 Interface QoS parameters
     24  * Parameters:
     25  *    unit          - (IN) Unit number
     26  *    l3_if_entry_p - (IN) Pointer to buffer
     27  *    intf_info     - (IN) Intf_info
     28  * Returns:
     29  *    BCM_E_XXX.
     30  */
     31 int
     32 bcmi_gh2_l3_intf_qos_set(
     33     int unit,
     34     uint32 *l3_if_entry_p,
     35     _bcm_l3_intf_cfg_t *intf_info)
     36 {
     37     soc_mem_t mem;
     38     int hw_map_idx = 0;
     39 
     40     if (!soc_feature(unit, soc_feature_vxlan_lite_riot)) {
     41         return BCM_E_UNAVAIL;
     42     }
     43 
     44     /* Input parameters check */
     45     if ((NULL == l3_if_entry_p) || (NULL == intf_info)) {
     46         return BCM_E_PARAM;
     47     }
     48 
     49     mem = EGR_L3_INTFm;
     50 
     51     /* GH2 doesn't support L3 Interface OVLAN/IVLAN QoS parameters */
     52     if (intf_info->vlan_qos.flags & BCM_L3_INTF_QOS_OUTER_VLAN_PRI_COPY ||
     53         intf_info->vlan_qos.flags & BCM_L3_INTF_QOS_OUTER_VLAN_PRI_SET ||
     54         intf_info->vlan_qos.flags & BCM_L3_INTF_QOS_OUTER_VLAN_PRI_REMARK ||
     55         intf_info->vlan_qos.flags & BCM_L3_INTF_QOS_INNER_VLAN_PRI_COPY ||
     56         intf_info->vlan_qos.flags & BCM_L3_INTF_QOS_INNER_VLAN_PRI_SET ||
     57         intf_info->vlan_qos.flags & BCM_L3_INTF_QOS_INNER_VLAN_PRI_REMARK) {
     58         return BCM_E_PARAM;
     59     }
     60 
     61     if (intf_info->dscp_qos.flags & BCM_L3_INTF_QOS_DSCP_COPY) {
     62         /* DSCP_SELf = 0x0: Do not modify DSCP */
     63         soc_mem_field32_set(unit, mem, l3_if_entry_p, DSCP_SELf, 0x0);
     64     } else if (intf_info->dscp_qos.flags & BCM_L3_INTF_QOS_DSCP_SET) {
     65         /* DSCP_SELf = 0x1: Use DSCP from this table */
     66         soc_mem_field32_set(unit, mem, l3_if_entry_p, DSCP_SELf, 0x1);
     67         soc_mem_field32_set(unit, mem, l3_if_entry_p,
     68                             DSCPf, intf_info->dscp_qos.dscp);
     69     } else if (intf_info->dscp_qos.flags & BCM_L3_INTF_QOS_DSCP_REMARK) {
     70         /* DSCP_SELf = 0x2: Use DSCP_MAPPING_PTR from this table */
     71         soc_mem_field32_set(unit, mem, l3_if_entry_p, DSCP_SELf, 0x2);
     72 
     73         BCM_IF_ERROR_RETURN(
     74             _bcm_tr2_qos_id2idx(unit, intf_info->dscp_qos.qos_map_id,
     75                                 &hw_map_idx));
     76         soc_mem_field32_set(unit, mem, l3_if_entry_p,
     77                             DSCP_MAPPING_PTRf, hw_map_idx);
     78     } else {
     79         /* DSCP_SELf = 0x3: Pick up from packet */
     80         soc_mem_field32_set(unit, mem, l3_if_entry_p, DSCP_SELf, 0x3);
     81     }
     82 
     83     return BCM_E_NONE;
     84 }
     85 
     86 /*
     87  * Function:
     88  *    bcmi_gh2_l3_intf_qos_get
     89  * Purpose:
     90  *    Get L3 Interface QoS parameters
     91  * Parameters:
     92  *    unit          - (IN) Unit number
     93  *    l3_if_entry_p - (IN) Pointer to buffer
     94  *    intf_info     - (OUT) Intf_info
     95  * Returns:
     96  *     BCM_E_XXX.
     97  */
     98 int
     99 bcmi_gh2_l3_intf_qos_get(
    100     int unit,
    101     uint32 *l3_if_entry_p,
    102     _bcm_l3_intf_cfg_t *intf_info)
    103 {
    104     soc_mem_t mem;
    105     uint32 dscp_sel = 0;
    106     int hw_map_idx = 0;
    107 
    108     if (!soc_feature(unit, soc_feature_vxlan_lite_riot)) {
    109         return BCM_E_UNAVAIL;
    110     }
    111 
    112     /* Input parameters check */
    113     if ((NULL == l3_if_entry_p) || (NULL == intf_info)) {
    114         return BCM_E_PARAM;
    115     }
    116 
    117     mem = EGR_L3_INTFm;
    118 
    119     dscp_sel = soc_mem_field32_get(unit, mem, l3_if_entry_p, DSCP_SELf);
    120 
    121     if (dscp_sel == 0x0) {
    122         /* Do not modify DSCP */
    123         intf_info->dscp_qos.flags |= BCM_L3_INTF_QOS_DSCP_COPY;
    124     } else if (dscp_sel == 0x1) {
    125         /* Use DSCP from this table */
    126         intf_info->dscp_qos.flags |= BCM_L3_INTF_QOS_DSCP_SET;
    127         intf_info->dscp_qos.dscp =
    128             soc_mem_field32_get(unit, mem, l3_if_entry_p, DSCPf);
    129     } else if (dscp_sel == 0x2) {
    130         /* Use DSCP_MAPPING_PTR from this table */
    131         intf_info->dscp_qos.flags |= BCM_L3_INTF_QOS_DSCP_REMARK;
    132         hw_map_idx =
    133             soc_mem_field32_get(unit, mem, l3_if_entry_p,
    134                                 DSCP_MAPPING_PTRf);
    135         BCM_IF_ERROR_RETURN(
    136             _bcm_tr2_qos_idx2id(unit, hw_map_idx,
    137                                 _BCM_QOS_MAP_TYPE_EGR_DSCP_TABLE,
    138                                 &intf_info->dscp_qos.qos_map_id));
    139     }
    140 
    141     return BCM_E_NONE;
    142 }
    143 
    144 #endif /* BCM_GREYHOUND2_SUPPORT && INCLUDE_L3 */