net/ice/base: replace single-element array hack
authorQi Zhang <qi.z.zhang@intel.com>
Wed, 26 Aug 2020 06:57:07 +0000 (14:57 +0800)
committerFerruh Yigit <ferruh.yigit@intel.com>
Fri, 18 Sep 2020 16:55:09 +0000 (18:55 +0200)
Convert the pre-C90-extension "C struct hack" method (using a single-
element array at the end of a structure for implementing variable-length
types) to the preferred use of C99 flexible array member.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Acked-by: Qiming Yang <qiming.yang@intel.com>
drivers/net/ice/base/ice_adminq_cmd.h
drivers/net/ice/base/ice_common.c
drivers/net/ice/base/ice_dcb.h
drivers/net/ice/base/ice_flex_pipe.c
drivers/net/ice/base/ice_flex_type.h
drivers/net/ice/base/ice_sched.c
drivers/net/ice/base/ice_switch.c
drivers/net/ice/base/ice_switch.h
drivers/net/ice/base/ice_type.h
drivers/net/ice/ice_rxtx.c

index df41cce..d7a57fe 100644 (file)
@@ -312,7 +312,7 @@ struct ice_aqc_alloc_free_res_elem {
 #define ICE_AQC_RES_TYPE_VSI_PRUNE_LIST_M      \
                                (0xF << ICE_AQC_RES_TYPE_VSI_PRUNE_LIST_S)
        __le16 num_elems;
-       struct ice_aqc_res_elem elem[1];
+       struct ice_aqc_res_elem elem[STRUCT_HACK_VAR_LEN];
 };
 
 /* Get Allocated Resource Descriptors Command (indirect 0x020A) */
@@ -812,7 +812,7 @@ struct ice_sw_rule_lkup_rx_tx {
         * lookup-type
         */
        __le16 hdr_len;
-       u8 hdr[1];
+       u8 hdr[STRUCT_HACK_VAR_LEN];
 };
 
 /* Add/Update/Remove large action command/response entry
@@ -872,7 +872,7 @@ struct ice_sw_rule_lg_act {
 #define ICE_LG_ACT_STAT_COUNT          0x7
 #define ICE_LG_ACT_STAT_COUNT_S                3
 #define ICE_LG_ACT_STAT_COUNT_M                (0x7F << ICE_LG_ACT_STAT_COUNT_S)
-       __le32 act[1]; /* array of size for actions */
+       __le32 act[STRUCT_HACK_VAR_LEN]; /* array of size for actions */
 };
 
 /* Add/Update/Remove VSI list command/response entry
@@ -882,7 +882,7 @@ struct ice_sw_rule_lg_act {
 struct ice_sw_rule_vsi_list {
        __le16 index; /* Index of VSI/Prune list */
        __le16 number_vsi;
-       __le16 vsi[1]; /* Array of number_vsi VSI numbers */
+       __le16 vsi[STRUCT_HACK_VAR_LEN]; /* Array of number_vsi VSI numbers */
 };
 
 #pragma pack(1)
@@ -989,7 +989,7 @@ struct ice_aqc_txsched_move_grp_info_hdr {
 
 struct ice_aqc_move_elem {
        struct ice_aqc_txsched_move_grp_info_hdr hdr;
-       __le32 teid[1];
+       __le32 teid[STRUCT_HACK_VAR_LEN];
 };
 
 struct ice_aqc_elem_info_bw {
@@ -1042,7 +1042,7 @@ struct ice_aqc_txsched_topo_grp_info_hdr {
 
 struct ice_aqc_add_elem {
        struct ice_aqc_txsched_topo_grp_info_hdr hdr;
-       struct ice_aqc_txsched_elem_data generic[1];
+       struct ice_aqc_txsched_elem_data generic[STRUCT_HACK_VAR_LEN];
 };
 
 struct ice_aqc_get_topo_elem {
@@ -1053,7 +1053,7 @@ struct ice_aqc_get_topo_elem {
 
 struct ice_aqc_delete_elem {
        struct ice_aqc_txsched_topo_grp_info_hdr hdr;
-       __le32 teid[1];
+       __le32 teid[STRUCT_HACK_VAR_LEN];
 };
 
 /* Query Port ETS (indirect 0x040E)
@@ -2426,7 +2426,7 @@ struct ice_aqc_add_tx_qgrp {
        __le32 parent_teid;
        u8 num_txqs;
        u8 rsvd[3];
-       struct ice_aqc_add_txqs_perq txqs[1];
+       struct ice_aqc_add_txqs_perq txqs[STRUCT_HACK_VAR_LEN];
 };
 
 /* Disable Tx LAN Queues (indirect 0x0C31) */
@@ -2470,7 +2470,7 @@ struct ice_aqc_dis_txq_item {
                        (0 << ICE_AQC_Q_DIS_BUF_ELEM_TYPE_S)
 #define ICE_AQC_Q_DIS_BUF_ELEM_TYPE_RDMA_QSET  \
                        (1 << ICE_AQC_Q_DIS_BUF_ELEM_TYPE_S)
-       __le16 q_id[1];
+       __le16 q_id[STRUCT_HACK_VAR_LEN];
 };
 
 #pragma pack()
@@ -2514,7 +2514,7 @@ struct ice_aqc_move_txqs_elem {
 struct ice_aqc_move_txqs_data {
        __le32 src_teid;
        __le32 dest_teid;
-       struct ice_aqc_move_txqs_elem txqs[1];
+       struct ice_aqc_move_txqs_elem txqs[STRUCT_HACK_VAR_LEN];
 };
 
 /* Download Package (indirect 0x0C40) */
@@ -2567,7 +2567,7 @@ struct ice_aqc_get_pkg_info {
 /* Get Package Info List response buffer format (0x0C43) */
 struct ice_aqc_get_pkg_info_resp {
        __le32 count;
-       struct ice_aqc_get_pkg_info pkg_info[1];
+       struct ice_aqc_get_pkg_info pkg_info[STRUCT_HACK_VAR_LEN];
 };
 
 /* Driver Shared Parameters (direct, 0x0C90) */
index 92b2df7..d9ad321 100644 (file)
@@ -1739,9 +1739,8 @@ ice_alloc_hw_res(struct ice_hw *hw, u16 type, u16 num, bool btm, u16 *res)
        enum ice_status status;
        u16 buf_len;
 
-       buf_len = ice_struct_size(buf, elem, num - 1);
-       buf = (struct ice_aqc_alloc_free_res_elem *)
-               ice_malloc(hw, buf_len);
+       buf_len = ice_struct_size(buf, elem, num);
+       buf = (struct ice_aqc_alloc_free_res_elem *)ice_malloc(hw, buf_len);
        if (!buf)
                return ICE_ERR_NO_MEMORY;
 
@@ -1757,7 +1756,7 @@ ice_alloc_hw_res(struct ice_hw *hw, u16 type, u16 num, bool btm, u16 *res)
        if (status)
                goto ice_alloc_res_exit;
 
-       ice_memcpy(res, buf->elem, sizeof(buf->elem) * num,
+       ice_memcpy(res, buf->elem, sizeof(*buf->elem) * num,
                   ICE_NONDMA_TO_NONDMA);
 
 ice_alloc_res_exit:
@@ -1778,7 +1777,7 @@ enum ice_status ice_free_hw_res(struct ice_hw *hw, u16 type, u16 num, u16 *res)
        enum ice_status status;
        u16 buf_len;
 
-       buf_len = ice_struct_size(buf, elem, num - 1);
+       buf_len = ice_struct_size(buf, elem, num);
        buf = (struct ice_aqc_alloc_free_res_elem *)ice_malloc(hw, buf_len);
        if (!buf)
                return ICE_ERR_NO_MEMORY;
@@ -1786,7 +1785,7 @@ enum ice_status ice_free_hw_res(struct ice_hw *hw, u16 type, u16 num, u16 *res)
        /* Prepare buffer to free resource. */
        buf->num_elems = CPU_TO_LE16(num);
        buf->res_type = CPU_TO_LE16(type);
-       ice_memcpy(buf->elem, res, sizeof(buf->elem) * num,
+       ice_memcpy(buf->elem, res, sizeof(*buf->elem) * num,
                   ICE_NONDMA_TO_NONDMA);
 
        status = ice_aq_alloc_free_res(hw, num, buf, buf_len,
@@ -3474,10 +3473,10 @@ ice_aq_add_lan_txq(struct ice_hw *hw, u8 num_qgrps,
                   struct ice_aqc_add_tx_qgrp *qg_list, u16 buf_size,
                   struct ice_sq_cd *cd)
 {
-       u16 i, sum_header_size, sum_q_size = 0;
        struct ice_aqc_add_tx_qgrp *list;
        struct ice_aqc_add_txqs *cmd;
        struct ice_aq_desc desc;
+       u16 i, sum_size = 0;
 
        ice_debug(hw, ICE_DBG_TRACE, "%s\n", __func__);
 
@@ -3491,18 +3490,13 @@ ice_aq_add_lan_txq(struct ice_hw *hw, u8 num_qgrps,
        if (num_qgrps > ICE_LAN_TXQ_MAX_QGRPS)
                return ICE_ERR_PARAM;
 
-       sum_header_size = num_qgrps *
-               (sizeof(*qg_list) - sizeof(*qg_list->txqs));
-
-       list = qg_list;
-       for (i = 0; i < num_qgrps; i++) {
-               struct ice_aqc_add_txqs_perq *q = list->txqs;
-
-               sum_q_size += list->num_txqs * sizeof(*q);
-               list = (struct ice_aqc_add_tx_qgrp *)(q + list->num_txqs);
+       for (i = 0, list = qg_list; i < num_qgrps; i++) {
+               sum_size += ice_struct_size(list, txqs, list->num_txqs);
+               list = (struct ice_aqc_add_tx_qgrp *)(list->txqs +
+                                                     list->num_txqs);
        }
 
-       if (buf_size != (sum_header_size + sum_q_size))
+       if (buf_size != sum_size)
                return ICE_ERR_PARAM;
 
        desc.flags |= CPU_TO_LE16(ICE_AQ_FLAG_RD);
@@ -3530,6 +3524,7 @@ ice_aq_dis_lan_txq(struct ice_hw *hw, u8 num_qgrps,
                   enum ice_disq_rst_src rst_src, u16 vmvf_num,
                   struct ice_sq_cd *cd)
 {
+       struct ice_aqc_dis_txq_item *item;
        struct ice_aqc_dis_txqs *cmd;
        struct ice_aq_desc desc;
        enum ice_status status;
@@ -3573,16 +3568,16 @@ ice_aq_dis_lan_txq(struct ice_hw *hw, u8 num_qgrps,
         */
        desc.flags |= CPU_TO_LE16(ICE_AQ_FLAG_RD);
 
-       for (i = 0; i < num_qgrps; ++i) {
-               /* Calculate the size taken up by the queue IDs in this group */
-               sz += qg_list[i].num_qs * sizeof(qg_list[i].q_id);
-
-               /* Add the size of the group header */
-               sz += sizeof(qg_list[i]) - sizeof(qg_list[i].q_id);
+       for (i = 0, item = qg_list; i < num_qgrps; i++) {
+               u16 item_size = ice_struct_size(item, q_id, item->num_qs);
 
                /* If the num of queues is even, add 2 bytes of padding */
-               if ((qg_list[i].num_qs % 2) == 0)
-                       sz += 2;
+               if ((item->num_qs % 2) == 0)
+                       item_size += 2;
+
+               sz += item_size;
+
+               item = (struct ice_aqc_dis_txq_item *)((u8 *)item + item_size);
        }
 
        if (buf_size != sz)
@@ -4268,24 +4263,32 @@ ice_dis_vsi_txq(struct ice_port_info *pi, u16 vsi_handle, u8 tc, u8 num_queues,
                struct ice_sq_cd *cd)
 {
        enum ice_status status = ICE_ERR_DOES_NOT_EXIST;
-       struct ice_aqc_dis_txq_item qg_list;
+       struct ice_aqc_dis_txq_item *qg_list;
        struct ice_q_ctx *q_ctx;
-       u16 i;
+       struct ice_hw *hw;
+       u16 i, buf_size;
 
        if (!pi || pi->port_state != ICE_SCHED_PORT_STATE_READY)
                return ICE_ERR_CFG;
 
+       hw = pi->hw;
+
        if (!num_queues) {
                /* if queue is disabled already yet the disable queue command
                 * has to be sent to complete the VF reset, then call
                 * ice_aq_dis_lan_txq without any queue information
                 */
                if (rst_src)
-                       return ice_aq_dis_lan_txq(pi->hw, 0, NULL, 0, rst_src,
+                       return ice_aq_dis_lan_txq(hw, 0, NULL, 0, rst_src,
                                                  vmvf_num, NULL);
                return ICE_ERR_CFG;
        }
 
+       buf_size = ice_struct_size(qg_list, q_id, 1);
+       qg_list = (struct ice_aqc_dis_txq_item *)ice_malloc(hw, buf_size);
+       if (!qg_list)
+               return ICE_ERR_NO_MEMORY;
+
        ice_acquire_lock(&pi->sched_lock);
 
        for (i = 0; i < num_queues; i++) {
@@ -4294,23 +4297,22 @@ ice_dis_vsi_txq(struct ice_port_info *pi, u16 vsi_handle, u8 tc, u8 num_queues,
                node = ice_sched_find_node_by_teid(pi->root, q_teids[i]);
                if (!node)
                        continue;
-               q_ctx = ice_get_lan_q_ctx(pi->hw, vsi_handle, tc, q_handles[i]);
+               q_ctx = ice_get_lan_q_ctx(hw, vsi_handle, tc, q_handles[i]);
                if (!q_ctx) {
-                       ice_debug(pi->hw, ICE_DBG_SCHED, "invalid queue handle%d\n",
+                       ice_debug(hw, ICE_DBG_SCHED, "invalid queue handle%d\n",
                                  q_handles[i]);
                        continue;
                }
                if (q_ctx->q_handle != q_handles[i]) {
-                       ice_debug(pi->hw, ICE_DBG_SCHED, "Err:handles %d %d\n",
+                       ice_debug(hw, ICE_DBG_SCHED, "Err:handles %d %d\n",
                                  q_ctx->q_handle, q_handles[i]);
                        continue;
                }
-               qg_list.parent_teid = node->info.parent_teid;
-               qg_list.num_qs = 1;
-               qg_list.q_id[0] = CPU_TO_LE16(q_ids[i]);
-               status = ice_aq_dis_lan_txq(pi->hw, 1, &qg_list,
-                                           sizeof(qg_list), rst_src, vmvf_num,
-                                           cd);
+               qg_list->parent_teid = node->info.parent_teid;
+               qg_list->num_qs = 1;
+               qg_list->q_id[0] = CPU_TO_LE16(q_ids[i]);
+               status = ice_aq_dis_lan_txq(hw, 1, qg_list, buf_size, rst_src,
+                                           vmvf_num, cd);
 
                if (status != ICE_SUCCESS)
                        break;
@@ -4318,6 +4320,7 @@ ice_dis_vsi_txq(struct ice_port_info *pi, u16 vsi_handle, u8 tc, u8 num_queues,
                q_ctx->q_handle = ICE_INVAL_Q_HANDLE;
        }
        ice_release_lock(&pi->sched_lock);
+       ice_free(hw, qg_list);
        return status;
 }
 
index 83b6e4d..8f0e09d 100644 (file)
 #define ICE_IEEE_APP_TLV_LEN           11
 
 #pragma pack(1)
-/* IEEE 802.1AB LLDP TLV structure */
-struct ice_lldp_generic_tlv {
-       __be16 typelen;
-       u8 tlvinfo[1];
-};
-
 /* IEEE 802.1AB LLDP Organization specific TLV */
 struct ice_lldp_org_tlv {
        __be16 typelen;
        __be32 ouisubtype;
-       u8 tlvinfo[1];
+       u8 tlvinfo[STRUCT_HACK_VAR_LEN];
 };
 #pragma pack()
 
@@ -136,7 +130,7 @@ struct ice_cee_feat_tlv {
 #define ICE_CEE_FEAT_TLV_WILLING_M     0x40
 #define ICE_CEE_FEAT_TLV_ERR_M         0x20
        u8 subtype;
-       u8 tlvinfo[1];
+       u8 tlvinfo[STRUCT_HACK_VAR_LEN];
 };
 
 #pragma pack(1)
index bf8530e..25d79b5 100644 (file)
@@ -1138,7 +1138,7 @@ static enum ice_status ice_get_pkg_info(struct ice_hw *hw)
 
        ice_debug(hw, ICE_DBG_TRACE, "%s\n", __func__);
 
-       size = ice_struct_size(pkg_info, pkg_info, ICE_PKG_CNT - 1);
+       size = ice_struct_size(pkg_info, pkg_info, ICE_PKG_CNT);
        pkg_info = (struct ice_aqc_get_pkg_info_resp *)ice_malloc(hw, size);
        if (!pkg_info)
                return ICE_ERR_NO_MEMORY;
@@ -1197,7 +1197,7 @@ static enum ice_status ice_verify_pkg(struct ice_pkg_hdr *pkg, u32 len)
        u32 seg_count;
        u32 i;
 
-       if (len < sizeof(*pkg))
+       if (len < ice_struct_size(pkg, seg_offset, 1))
                return ICE_ERR_BUF_TOO_SHORT;
 
        if (pkg->pkg_format_ver.major != ICE_PKG_FMT_VER_MAJ ||
@@ -1212,7 +1212,7 @@ static enum ice_status ice_verify_pkg(struct ice_pkg_hdr *pkg, u32 len)
                return ICE_ERR_CFG;
 
        /* make sure segment array fits in package length */
-       if (len < ice_struct_size(pkg, seg_offset, seg_count - 1))
+       if (len < ice_struct_size(pkg, seg_offset, seg_count))
                return ICE_ERR_BUF_TOO_SHORT;
 
        /* all segments must fit within length */
@@ -1321,7 +1321,7 @@ ice_chk_pkg_compat(struct ice_hw *hw, struct ice_pkg_hdr *ospkg,
        }
 
        /* Check if FW is compatible with the OS package */
-       size = ice_struct_size(pkg, pkg_info, ICE_PKG_CNT - 1);
+       size = ice_struct_size(pkg, pkg_info, ICE_PKG_CNT);
        pkg = (struct ice_aqc_get_pkg_info_resp *)ice_malloc(hw, size);
        if (!pkg)
                return ICE_ERR_NO_MEMORY;
@@ -2049,14 +2049,14 @@ ice_create_tunnel(struct ice_hw *hw, enum ice_tunnel_type type, u16 port)
 
        sect_rx = (struct ice_boost_tcam_section *)
                ice_pkg_buf_alloc_section(bld, ICE_SID_RXPARSER_BOOST_TCAM,
-                                         sizeof(*sect_rx));
+                                         ice_struct_size(sect_rx, tcam, 1));
        if (!sect_rx)
                goto ice_create_tunnel_err;
        sect_rx->count = CPU_TO_LE16(1);
 
        sect_tx = (struct ice_boost_tcam_section *)
                ice_pkg_buf_alloc_section(bld, ICE_SID_TXPARSER_BOOST_TCAM,
-                                         sizeof(*sect_tx));
+                                         ice_struct_size(sect_tx, tcam, 1));
        if (!sect_tx)
                goto ice_create_tunnel_err;
        sect_tx->count = CPU_TO_LE16(1);
@@ -2134,7 +2134,7 @@ enum ice_status ice_destroy_tunnel(struct ice_hw *hw, u16 port, bool all)
        }
 
        /* size of section - there is at least one entry */
-       size = ice_struct_size(sect_rx, tcam, count - 1);
+       size = ice_struct_size(sect_rx, tcam, count);
 
        bld = ice_pkg_buf_alloc(hw);
        if (!bld) {
@@ -4092,7 +4092,9 @@ ice_prof_bld_es(struct ice_hw *hw, enum ice_block blk,
 
                        id = ice_sect_id(blk, ICE_VEC_TBL);
                        p = (struct ice_pkg_es *)
-                               ice_pkg_buf_alloc_section(bld, id, sizeof(*p) +
+                               ice_pkg_buf_alloc_section(bld, id,
+                                                         ice_struct_size(p, es,
+                                                                         1) +
                                                          vec_size -
                                                          sizeof(p->es[0]));
 
@@ -4129,7 +4131,10 @@ ice_prof_bld_tcam(struct ice_hw *hw, enum ice_block blk,
 
                        id = ice_sect_id(blk, ICE_PROF_TCAM);
                        p = (struct ice_prof_id_section *)
-                               ice_pkg_buf_alloc_section(bld, id, sizeof(*p));
+                               ice_pkg_buf_alloc_section(bld, id,
+                                                         ice_struct_size(p,
+                                                                         entry,
+                                                                         1));
 
                        if (!p)
                                return ICE_ERR_MAX_LIMIT;
@@ -4166,7 +4171,10 @@ ice_prof_bld_xlt1(enum ice_block blk, struct ice_buf_build *bld,
 
                        id = ice_sect_id(blk, ICE_XLT1);
                        p = (struct ice_xlt1_section *)
-                               ice_pkg_buf_alloc_section(bld, id, sizeof(*p));
+                               ice_pkg_buf_alloc_section(bld, id,
+                                                         ice_struct_size(p,
+                                                                         value,
+                                                                         1));
 
                        if (!p)
                                return ICE_ERR_MAX_LIMIT;
@@ -4201,7 +4209,10 @@ ice_prof_bld_xlt2(enum ice_block blk, struct ice_buf_build *bld,
                case ICE_VSIG_REM:
                        id = ice_sect_id(blk, ICE_XLT2);
                        p = (struct ice_xlt2_section *)
-                               ice_pkg_buf_alloc_section(bld, id, sizeof(*p));
+                               ice_pkg_buf_alloc_section(bld, id,
+                                                         ice_struct_size(p,
+                                                                         value,
+                                                                         1));
 
                        if (!p)
                                return ICE_ERR_MAX_LIMIT;
index b58007f..8f33efd 100644 (file)
@@ -27,7 +27,7 @@ struct ice_fv {
 struct ice_pkg_hdr {
        struct ice_pkg_ver pkg_format_ver;
        __le32 seg_count;
-       __le32 seg_offset[1];
+       __le32 seg_offset[STRUCT_HACK_VAR_LEN];
 };
 
 /* generic segment */
@@ -58,12 +58,12 @@ struct ice_device_id_entry {
 struct ice_seg {
        struct ice_generic_seg_hdr hdr;
        __le32 device_table_count;
-       struct ice_device_id_entry device_table[1];
+       struct ice_device_id_entry device_table[STRUCT_HACK_VAR_LEN];
 };
 
 struct ice_nvm_table {
        __le32 table_count;
-       __le32 vers[1];
+       __le32 vers[STRUCT_HACK_VAR_LEN];
 };
 
 struct ice_buf {
@@ -73,7 +73,7 @@ struct ice_buf {
 
 struct ice_buf_table {
        __le32 buf_count;
-       struct ice_buf buf_array[1];
+       struct ice_buf buf_array[STRUCT_HACK_VAR_LEN];
 };
 
 /* global metadata specific segment */
@@ -106,11 +106,12 @@ struct ice_section_entry {
 struct ice_buf_hdr {
        __le16 section_count;
        __le16 data_end;
-       struct ice_section_entry section_entry[1];
+       struct ice_section_entry section_entry[STRUCT_HACK_VAR_LEN];
 };
 
 #define ICE_MAX_ENTRIES_IN_BUF(hd_sz, ent_sz) ((ICE_PKG_BUF_SIZE - \
-       sizeof(struct ice_buf_hdr) - (hd_sz)) / (ent_sz))
+       ice_struct_size((struct ice_buf_hdr *)0, section_entry, 1) - (hd_sz)) /\
+       (ent_sz))
 
 /* ice package section IDs */
 #define ICE_SID_XLT0_SW                        10
@@ -400,17 +401,17 @@ struct ice_label {
 
 struct ice_label_section {
        __le16 count;
-       struct ice_label label[1];
+       struct ice_label label[STRUCT_HACK_VAR_LEN];
 };
 
 #define ICE_MAX_LABELS_IN_BUF ICE_MAX_ENTRIES_IN_BUF( \
-       sizeof(struct ice_label_section) - sizeof(struct ice_label), \
-       sizeof(struct ice_label))
+       ice_struct_size((struct ice_label_section *)0, label, 1) - \
+       sizeof(struct ice_label), sizeof(struct ice_label))
 
 struct ice_sw_fv_section {
        __le16 count;
        __le16 base_offset;
-       struct ice_fv fv[1];
+       struct ice_fv fv[STRUCT_HACK_VAR_LEN];
 };
 
 struct ice_sw_fv_list_entry {
@@ -455,43 +456,32 @@ struct ice_boost_tcam_entry {
 struct ice_boost_tcam_section {
        __le16 count;
        __le16 reserved;
-       struct ice_boost_tcam_entry tcam[1];
+       struct ice_boost_tcam_entry tcam[STRUCT_HACK_VAR_LEN];
 };
 
 #define ICE_MAX_BST_TCAMS_IN_BUF ICE_MAX_ENTRIES_IN_BUF( \
-       sizeof(struct ice_boost_tcam_section) - \
+       ice_struct_size((struct ice_boost_tcam_section *)0, tcam, 1) - \
        sizeof(struct ice_boost_tcam_entry), \
        sizeof(struct ice_boost_tcam_entry))
 
-#pragma pack(1)
 struct ice_xlt1_section {
        __le16 count;
        __le16 offset;
-       u8 value[1];
+       u8 value[STRUCT_HACK_VAR_LEN];
 };
-#pragma pack()
-
-#define ICE_XLT1_SIZE(n)       (sizeof(struct ice_xlt1_section) + \
-                                (sizeof(u8) * ((n) - 1)))
 
 struct ice_xlt2_section {
        __le16 count;
        __le16 offset;
-       __le16 value[1];
+       __le16 value[STRUCT_HACK_VAR_LEN];
 };
 
-#define ICE_XLT2_SIZE(n)       (sizeof(struct ice_xlt2_section) + \
-                                (sizeof(u16) * ((n) - 1)))
-
 struct ice_prof_redir_section {
        __le16 count;
        __le16 offset;
-       u8 redir_value[1];
+       u8 redir_value[STRUCT_HACK_VAR_LEN];
 };
 
-#define ICE_PROF_REDIR_SIZE(n) (sizeof(struct ice_prof_redir_section) + \
-                                (sizeof(u8) * ((n) - 1)))
-
 /* package buffer building */
 
 struct ice_buf_build {
@@ -548,7 +538,7 @@ struct ice_tunnel_table {
 struct ice_pkg_es {
        __le16 count;
        __le16 offset;
-       struct ice_fv_word es[1];
+       struct ice_fv_word es[STRUCT_HACK_VAR_LEN];
 };
 
 struct ice_es {
@@ -703,11 +693,12 @@ struct ice_prof_tcam_entry {
        u8 prof_id;
 };
 
+#pragma pack()
+
 struct ice_prof_id_section {
        __le16 count;
-       struct ice_prof_tcam_entry entry[1];
+       struct ice_prof_tcam_entry entry[STRUCT_HACK_VAR_LEN];
 };
-#pragma pack()
 
 struct ice_prof_tcam {
        u32 sid;
index edd90ae..e189e95 100644 (file)
@@ -237,7 +237,7 @@ ice_sched_remove_elems(struct ice_hw *hw, struct ice_sched_node *parent,
        enum ice_status status;
        u16 buf_size;
 
-       buf_size = sizeof(*buf) + sizeof(u32) * (num_nodes - 1);
+       buf_size = ice_struct_size(buf, teid, num_nodes);
        buf = (struct ice_aqc_delete_elem *)ice_malloc(hw, buf_size);
        if (!buf)
                return ICE_ERR_NO_MEMORY;
@@ -892,7 +892,7 @@ ice_sched_add_elems(struct ice_port_info *pi, struct ice_sched_node *tc_node,
        u16 buf_size;
        u32 teid;
 
-       buf_size = ice_struct_size(buf, generic, num_nodes - 1);
+       buf_size = ice_struct_size(buf, generic, num_nodes);
        buf = (struct ice_aqc_add_elem *)ice_malloc(hw, buf_size);
        if (!buf)
                return ICE_ERR_NO_MEMORY;
@@ -2260,6 +2260,7 @@ ice_sched_move_nodes(struct ice_port_info *pi, struct ice_sched_node *parent,
        struct ice_sched_node *node;
        u16 i, grps_movd = 0;
        struct ice_hw *hw;
+       u16 buf_len;
 
        hw = pi->hw;
 
@@ -2271,7 +2272,8 @@ ice_sched_move_nodes(struct ice_port_info *pi, struct ice_sched_node *parent,
            hw->max_children[parent->tx_sched_layer])
                return ICE_ERR_AQ_FULL;
 
-       buf = (struct ice_aqc_move_elem *)ice_malloc(hw, sizeof(*buf));
+       buf_len = ice_struct_size(buf, teid, 1);
+       buf = (struct ice_aqc_move_elem *)ice_malloc(hw, buf_len);
        if (!buf)
                return ICE_ERR_NO_MEMORY;
 
@@ -2286,7 +2288,7 @@ ice_sched_move_nodes(struct ice_port_info *pi, struct ice_sched_node *parent,
                buf->hdr.dest_parent_teid = parent->info.node_teid;
                buf->teid[0] = node->info.node_teid;
                buf->hdr.num_elems = CPU_TO_LE16(1);
-               status = ice_aq_move_sched_elems(hw, 1, buf, sizeof(*buf),
+               status = ice_aq_move_sched_elems(hw, 1, buf, buf_len,
                                                 &grps_movd, NULL);
                if (status && grps_movd != 1) {
                        status = ICE_ERR_CFG;
index 8759224..858a732 100644 (file)
@@ -1478,9 +1478,8 @@ ice_alloc_sw(struct ice_hw *hw, bool ena_stats, bool shared_res, u16 *sw_id,
        enum ice_status status;
        u16 buf_len;
 
-       buf_len = sizeof(*sw_buf);
-       sw_buf = (struct ice_aqc_alloc_free_res_elem *)
-                  ice_malloc(hw, buf_len);
+       buf_len = ice_struct_size(sw_buf, elem, 1);
+       sw_buf = (struct ice_aqc_alloc_free_res_elem *)ice_malloc(hw, buf_len);
        if (!sw_buf)
                return ICE_ERR_NO_MEMORY;
 
@@ -1560,9 +1559,8 @@ enum ice_status ice_free_sw(struct ice_hw *hw, u16 sw_id, u16 counter_id)
        enum ice_status status, ret_status;
        u16 buf_len;
 
-       buf_len = sizeof(*sw_buf);
-       sw_buf = (struct ice_aqc_alloc_free_res_elem *)
-                  ice_malloc(hw, buf_len);
+       buf_len = ice_struct_size(sw_buf, elem, 1);
+       sw_buf = (struct ice_aqc_alloc_free_res_elem *)ice_malloc(hw, buf_len);
        if (!sw_buf)
                return ICE_ERR_NO_MEMORY;
 
@@ -2103,9 +2101,8 @@ ice_aq_alloc_free_vsi_list(struct ice_hw *hw, u16 *vsi_list_id,
        enum ice_status status;
        u16 buf_len;
 
-       buf_len = sizeof(*sw_buf);
-       sw_buf = (struct ice_aqc_alloc_free_res_elem *)
-               ice_malloc(hw, buf_len);
+       buf_len = ice_struct_size(sw_buf, elem, 1);
+       sw_buf = (struct ice_aqc_alloc_free_res_elem *)ice_malloc(hw, buf_len);
        if (!sw_buf)
                return ICE_ERR_NO_MEMORY;
        sw_buf->num_elems = CPU_TO_LE16(1);
@@ -2387,7 +2384,7 @@ enum ice_status ice_alloc_recipe(struct ice_hw *hw, u16 *rid)
        enum ice_status status;
        u16 buf_len;
 
-       buf_len = sizeof(*sw_buf);
+       buf_len = ice_struct_size(sw_buf, elem, 1);
        sw_buf = (struct ice_aqc_alloc_free_res_elem *)ice_malloc(hw, buf_len);
        if (!sw_buf)
                return ICE_ERR_NO_MEMORY;
@@ -5253,9 +5250,8 @@ ice_alloc_res_cntr(struct ice_hw *hw, u8 type, u8 alloc_shared, u16 num_items,
        u16 buf_len;
 
        /* Allocate resource */
-       buf_len = sizeof(*buf);
-       buf = (struct ice_aqc_alloc_free_res_elem *)
-               ice_malloc(hw, buf_len);
+       buf_len = ice_struct_size(buf, elem, 1);
+       buf = (struct ice_aqc_alloc_free_res_elem *)ice_malloc(hw, buf_len);
        if (!buf)
                return ICE_ERR_NO_MEMORY;
 
@@ -5292,9 +5288,8 @@ ice_free_res_cntr(struct ice_hw *hw, u8 type, u8 alloc_shared, u16 num_items,
        u16 buf_len;
 
        /* Free resource */
-       buf_len = sizeof(*buf);
-       buf = (struct ice_aqc_alloc_free_res_elem *)
-               ice_malloc(hw, buf_len);
+       buf_len = ice_struct_size(buf, elem, 1);
+       buf = (struct ice_aqc_alloc_free_res_elem *)ice_malloc(hw, buf_len);
        if (!buf)
                return ICE_ERR_NO_MEMORY;
 
@@ -5354,9 +5349,8 @@ ice_alloc_res_lg_act(struct ice_hw *hw, u16 *l_id, u16 num_acts)
                return ICE_ERR_PARAM;
 
        /* Allocate resource for large action */
-       buf_len = sizeof(*sw_buf);
-       sw_buf = (struct ice_aqc_alloc_free_res_elem *)
-               ice_malloc(hw, buf_len);
+       buf_len = ice_struct_size(sw_buf, elem, 1);
+       sw_buf = (struct ice_aqc_alloc_free_res_elem *)ice_malloc(hw, buf_len);
        if (!sw_buf)
                return ICE_ERR_NO_MEMORY;
 
index fe7b86f..aa44677 100644 (file)
 
 #define DUMMY_ETH_HDR_LEN              16
 #define ICE_SW_RULE_RX_TX_ETH_HDR_SIZE \
-       (sizeof(struct ice_aqc_sw_rules_elem) - \
-        FIELD_SIZEOF(struct ice_aqc_sw_rules_elem, pdata) + \
-        sizeof(struct ice_sw_rule_lkup_rx_tx) + DUMMY_ETH_HDR_LEN - 1)
+       (offsetof(struct ice_aqc_sw_rules_elem, pdata.lkup_tx_rx.hdr) + \
+        (DUMMY_ETH_HDR_LEN * \
+         sizeof(((struct ice_sw_rule_lkup_rx_tx *)0)->hdr[0])))
 #define ICE_SW_RULE_RX_TX_NO_HDR_SIZE \
-       (sizeof(struct ice_aqc_sw_rules_elem) - \
-        FIELD_SIZEOF(struct ice_aqc_sw_rules_elem, pdata) + \
-        sizeof(struct ice_sw_rule_lkup_rx_tx) - 1)
+       (offsetof(struct ice_aqc_sw_rules_elem, pdata.lkup_tx_rx.hdr))
 #define ICE_SW_RULE_LG_ACT_SIZE(n) \
-       (sizeof(struct ice_aqc_sw_rules_elem) - \
-        FIELD_SIZEOF(struct ice_aqc_sw_rules_elem, pdata) + \
-        sizeof(struct ice_sw_rule_lg_act) - \
-        FIELD_SIZEOF(struct ice_sw_rule_lg_act, act) + \
-        ((n) * FIELD_SIZEOF(struct ice_sw_rule_lg_act, act)))
+       (offsetof(struct ice_aqc_sw_rules_elem, pdata.lg_act.act) + \
+        ((n) * sizeof(((struct ice_sw_rule_lg_act *)0)->act[0])))
 #define ICE_SW_RULE_VSI_LIST_SIZE(n) \
-       (sizeof(struct ice_aqc_sw_rules_elem) - \
-        FIELD_SIZEOF(struct ice_aqc_sw_rules_elem, pdata) + \
-        sizeof(struct ice_sw_rule_vsi_list) - \
-        FIELD_SIZEOF(struct ice_sw_rule_vsi_list, vsi) + \
-        ((n) * FIELD_SIZEOF(struct ice_sw_rule_vsi_list, vsi)))
+       (offsetof(struct ice_aqc_sw_rules_elem, pdata.vsi_list.vsi) + \
+        ((n) * sizeof(((struct ice_sw_rule_vsi_list *)0)->vsi[0])))
 
 /* Worst case buffer length for ice_aqc_opc_get_res_alloc */
 #define ICE_MAX_RES_TYPES 0x80
index 3775689..be6bdf9 100644 (file)
 
 #define IS_ASCII(_ch)  ((_ch) < 0x80)
 
+#define STRUCT_HACK_VAR_LEN
+/**
+ * ice_struct_size - size of struct with C99 flexible array member
+ * @ptr: pointer to structure
+ * @field: flexible array member (last member of the structure)
+ * @num: number of elements of that flexible array member
+ */
 #define ice_struct_size(ptr, field, num) \
        (sizeof(*(ptr)) + sizeof(*(ptr)->field) * (num))
 
index ad58442..fecb134 100644 (file)
@@ -459,8 +459,9 @@ ice_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
        int err;
        struct ice_vsi *vsi;
        struct ice_hw *hw;
-       struct ice_aqc_add_tx_qgrp txq_elem;
+       struct ice_aqc_add_tx_qgrp *txq_elem;
        struct ice_tlan_ctx tx_ctx;
+       int buf_len;
 
        PMD_INIT_FUNC_TRACE();
 
@@ -477,13 +478,17 @@ ice_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
                return -EINVAL;
        }
 
+       buf_len = ice_struct_size(txq_elem, txqs, 1);
+       txq_elem = ice_malloc(hw, buf_len);
+       if (!txq_elem)
+               return -ENOMEM;
+
        vsi = txq->vsi;
        hw = ICE_VSI_TO_HW(vsi);
 
-       memset(&txq_elem, 0, sizeof(txq_elem));
        memset(&tx_ctx, 0, sizeof(tx_ctx));
-       txq_elem.num_txqs = 1;
-       txq_elem.txqs[0].txq_id = rte_cpu_to_le_16(txq->reg_idx);
+       txq_elem->num_txqs = 1;
+       txq_elem->txqs[0].txq_id = rte_cpu_to_le_16(txq->reg_idx);
 
        tx_ctx.base = txq->tx_ring_dma / ICE_QUEUE_BASE_ADDR_UNIT;
        tx_ctx.qlen = txq->nb_tx_desc;
@@ -495,7 +500,7 @@ ice_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
        tx_ctx.tso_qnum = txq->reg_idx; /* index for tso state structure */
        tx_ctx.legacy_int = 1; /* Legacy or Advanced Host Interface */
 
-       ice_set_ctx(hw, (uint8_t *)&tx_ctx, txq_elem.txqs[0].txq_ctx,
+       ice_set_ctx(hw, (uint8_t *)&tx_ctx, txq_elem->txqs[0].txq_ctx,
                    ice_tlan_ctx_info);
 
        txq->qtx_tail = hw->hw_addr + QTX_COMM_DBELL(txq->reg_idx);
@@ -505,15 +510,18 @@ ice_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
 
        /* Fix me, we assume TC always 0 here */
        err = ice_ena_vsi_txq(hw->port_info, vsi->idx, 0, tx_queue_id, 1,
-                       &txq_elem, sizeof(txq_elem), NULL);
+                       txq_elem, buf_len, NULL);
        if (err) {
                PMD_DRV_LOG(ERR, "Failed to add lan txq");
+               rte_free(txq_elem);
                return -EIO;
        }
        /* store the schedule node id */
-       txq->q_teid = txq_elem.txqs[0].q_teid;
+       txq->q_teid = txq_elem->txqs[0].q_teid;
 
        dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;
+
+       rte_free(txq_elem);
        return 0;
 }
 
@@ -637,8 +645,9 @@ ice_fdir_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
        int err;
        struct ice_vsi *vsi;
        struct ice_hw *hw;
-       struct ice_aqc_add_tx_qgrp txq_elem;
+       struct ice_aqc_add_tx_qgrp *txq_elem;
        struct ice_tlan_ctx tx_ctx;
+       int buf_len;
 
        PMD_INIT_FUNC_TRACE();
 
@@ -649,13 +658,17 @@ ice_fdir_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
                return -EINVAL;
        }
 
+       buf_len = ice_struct_size(txq_elem, txqs, 1);
+       txq_elem = ice_malloc(hw, buf_len);
+       if (!txq_elem)
+               return -ENOMEM;
+
        vsi = txq->vsi;
        hw = ICE_VSI_TO_HW(vsi);
 
-       memset(&txq_elem, 0, sizeof(txq_elem));
        memset(&tx_ctx, 0, sizeof(tx_ctx));
-       txq_elem.num_txqs = 1;
-       txq_elem.txqs[0].txq_id = rte_cpu_to_le_16(txq->reg_idx);
+       txq_elem->num_txqs = 1;
+       txq_elem->txqs[0].txq_id = rte_cpu_to_le_16(txq->reg_idx);
 
        tx_ctx.base = txq->tx_ring_dma / ICE_QUEUE_BASE_ADDR_UNIT;
        tx_ctx.qlen = txq->nb_tx_desc;
@@ -667,7 +680,7 @@ ice_fdir_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
        tx_ctx.tso_qnum = txq->reg_idx; /* index for tso state structure */
        tx_ctx.legacy_int = 1; /* Legacy or Advanced Host Interface */
 
-       ice_set_ctx(hw, (uint8_t *)&tx_ctx, txq_elem.txqs[0].txq_ctx,
+       ice_set_ctx(hw, (uint8_t *)&tx_ctx, txq_elem->txqs[0].txq_ctx,
                    ice_tlan_ctx_info);
 
        txq->qtx_tail = hw->hw_addr + QTX_COMM_DBELL(txq->reg_idx);
@@ -677,14 +690,16 @@ ice_fdir_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
 
        /* Fix me, we assume TC always 0 here */
        err = ice_ena_vsi_txq(hw->port_info, vsi->idx, 0, tx_queue_id, 1,
-                             &txq_elem, sizeof(txq_elem), NULL);
+                             txq_elem, buf_len, NULL);
        if (err) {
                PMD_DRV_LOG(ERR, "Failed to add FDIR txq");
+               rte_free(txq_elem);
                return -EIO;
        }
        /* store the schedule node id */
-       txq->q_teid = txq_elem.txqs[0].q_teid;
+       txq->q_teid = txq_elem->txqs[0].q_teid;
 
+       rte_free(txq_elem);
        return 0;
 }