Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/gi…

…t/jkirsher/next-queue

Tony Nguyen says:

====================
100GbE Intel Wired LAN Driver Updates 2020-07-01

This series contains updates to the ice driver only.

Jacob implements a devlink region for device capabilities.

Bruce removes structs containing only one-element arrays that are either
unused or only used for indexing. Instead, use pointer arithmetic or
other indexing to access the elements. Converts "C struct hack"
variable-length types to the preferred C99 flexible array member.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/intel/ice/ice.h

@@ -373,6 +373,7 @@ struct ice_pf {
 	struct devlink_port devlink_port;
 
 	struct devlink_region *nvm_region;
+	struct devlink_region *devcaps_region;
 
 	/* OS reserved IRQ details */
 	struct msix_entry *msix_entries;

drivers/net/ethernet/intel/ice/ice_adminq_cmd.h

@@ -215,13 +215,6 @@ struct ice_aqc_get_sw_cfg_resp_elem {
 #define ICE_AQC_GET_SW_CONF_RESP_IS_VF		BIT(15)
 };
 
-/* The response buffer is as follows. Note that the length of the
- * elements array varies with the length of the command response.
- */
-struct ice_aqc_get_sw_cfg_resp {
-	struct ice_aqc_get_sw_cfg_resp_elem elements[1];
-};
-
 /* These resource type defines are used for all switch resource
  * commands where a resource type is required, such as:
  * Get Resource Allocation command (indirect 0x0204)
@@ -274,7 +267,7 @@ 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[];
 };
 
 /* Add VSI (indirect 0x0210)
@@ -568,8 +561,8 @@ struct ice_sw_rule_lkup_rx_tx {
 	 * lookup-type
 	 */
 	__le16 hdr_len;
-	u8 hdr[1];
-} __packed;
+	u8 hdr[];
+};
 
 /* Add/Update/Remove large action command/response entry
  * "index" is returned as part of a response to a successful Add command, and
@@ -578,7 +571,6 @@ struct ice_sw_rule_lkup_rx_tx {
 struct ice_sw_rule_lg_act {
 	__le16 index; /* Index in large action table */
 	__le16 size;
-	__le32 act[1]; /* array of size for actions */
 	/* Max number of large actions */
 #define ICE_MAX_LG_ACT	4
 	/* Bit 0:1 - Action type */
@@ -629,6 +621,7 @@ 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[]; /* array of size for actions */
 };
 
 /* Add/Update/Remove VSI list command/response entry
@@ -638,7 +631,7 @@ 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[]; /* Array of number_vsi VSI numbers */
 };
 
 /* Query VSI list command/response entry */
@@ -695,14 +688,6 @@ struct ice_aqc_sched_elem_cmd {
 	__le32 addr_low;
 };
 
-/* This is the buffer for:
- * Suspend Nodes (indirect 0x0409)
- * Resume Nodes (indirect 0x040A)
- */
-struct ice_aqc_suspend_resume_elem {
-	__le32 teid[1];
-};
-
 struct ice_aqc_elem_info_bw {
 	__le16 bw_profile_idx;
 	__le16 bw_alloc;
@@ -753,15 +738,7 @@ 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_conf_elem {
-	struct ice_aqc_txsched_elem_data generic[1];
-};
-
-struct ice_aqc_get_elem {
-	struct ice_aqc_txsched_elem_data generic[1];
+	struct ice_aqc_txsched_elem_data generic[];
 };
 
 struct ice_aqc_get_topo_elem {
@@ -772,7 +749,7 @@ 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[];
 };
 
 /* Query Port ETS (indirect 0x040E)
@@ -835,10 +812,6 @@ struct ice_aqc_rl_profile_elem {
 	__le16 rl_encode;
 };
 
-struct ice_aqc_rl_profile_generic_elem {
-	struct ice_aqc_rl_profile_elem generic[1];
-};
-
 /* Query Scheduler Resource Allocation (indirect 0x0412)
  * This indirect command retrieves the scheduler resources allocated by
  * EMP Firmware to the given PF.
@@ -1537,7 +1510,7 @@ 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[];
 };
 
 /* Disable Tx LAN Queues (indirect 0x0C31) */
@@ -1575,18 +1548,13 @@ struct ice_aqc_dis_txq_item {
 	u8 num_qs;
 	u8 rsvd;
 	/* The length of the q_id array varies according to num_qs */
-	__le16 q_id[1];
-	/* This only applies from F8 onward */
 #define ICE_AQC_Q_DIS_BUF_ELEM_TYPE_S		15
 #define ICE_AQC_Q_DIS_BUF_ELEM_TYPE_LAN_Q	\
 			(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)
-};
-
-struct ice_aqc_dis_txq {
-	struct ice_aqc_dis_txq_item qgrps[1];
-};
+	__le16 q_id[];
+} __packed;
 
 /* Configure Firmware Logging Command (indirect 0xFF09)
  * Logging Information Read Response (indirect 0xFF10)
@@ -1636,12 +1604,7 @@ enum ice_aqc_fw_logging_mod {
 	ICE_AQC_FW_LOG_ID_MAX,
 };
 
-/* This is the buffer for both of the logging commands.
- * The entry array size depends on the datalen parameter in the descriptor.
- * There will be a total of datalen / 2 entries.
- */
-struct ice_aqc_fw_logging_data {
-	__le16 entry[1];
+/* Defines for both above FW logging command/response buffers */
 #define ICE_AQC_FW_LOG_ID_S		0
 #define ICE_AQC_FW_LOG_ID_M		(0xFFF << ICE_AQC_FW_LOG_ID_S)
 
@@ -1654,7 +1617,6 @@ struct ice_aqc_fw_logging_data {
 #define ICE_AQC_FW_LOG_INIT_EN		BIT(13)	/* Used by command */
 #define ICE_AQC_FW_LOG_FLOW_EN		BIT(14)	/* Used by command */
 #define ICE_AQC_FW_LOG_ERR_EN		BIT(15)	/* Used by command */
-};
 
 /* Get/Clear FW Log (indirect 0xFF11) */
 struct ice_aqc_get_clear_fw_log {
@@ -1716,7 +1678,7 @@ 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[];
 };
 
 /* Lan Queue Overflow Event (direct, 0x1001) */

drivers/net/ethernet/intel/ice/ice_base.c

@@ -635,10 +635,10 @@ int
 ice_vsi_cfg_txq(struct ice_vsi *vsi, struct ice_ring *ring,
 		struct ice_aqc_add_tx_qgrp *qg_buf)
 {
+	u8 buf_len = struct_size(qg_buf, txqs, 1);
 	struct ice_tlan_ctx tlan_ctx = { 0 };
 	struct ice_aqc_add_txqs_perq *txq;
 	struct ice_pf *pf = vsi->back;
-	u8 buf_len = sizeof(*qg_buf);
 	struct ice_hw *hw = &pf->hw;
 	enum ice_status status;
 	u16 pf_q;