Merge branch 'qed-management-interaction-and-feature-changes'

Yuval Mintz says:

====================
qed: Management interaction & feature changes

All patches in this series either affect direct interaction with the
management firmware, or changes logic relating to some values retrieved
from it.

Patch #1 revises the basic logic for sending messages to the management
firmware and there completion, and is the most significant [at least
code-wise] of the bunch.

Patch #2 changes infrastrcure in a way that should better protect us form
mistakes leading to stack corruption such as was fixed in
bb480242 ("qed: Prevent stack corruption on MFW interaction").

Patch #3 corrects some update API endian issue [sent here as it would
create conflicts with #2, and because it's lack would create a rather
insignifcant problem].

Patch #4 removes some unnecessary logging, allowing cleaner forward
compatibility with future management firmware versions.

Patches #5, #6 slightly change the number of possible L2 queues in some
scenarios, leading to the possibility of having more queues / VFS.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/qlogic/qed/qed_dev.c

@@ -1550,7 +1550,7 @@ static void qed_hw_set_feat(struct qed_hwfn *p_hwfn)
 {
 	u32 *feat_num = p_hwfn->hw_info.feat_num;
 	struct qed_sb_cnt_info sb_cnt_info;
-	int num_features = 1;
+	u32 non_l2_sbs = 0;
 
 	if (IS_ENABLED(CONFIG_QED_RDMA) &&
 	    p_hwfn->hw_info.personality == QED_PCI_ETH_ROCE) {
@@ -1558,31 +1558,37 @@ static void qed_hw_set_feat(struct qed_hwfn *p_hwfn)
 		 * the status blocks equally between L2 / RoCE but with
 		 * consideration as to how many l2 queues / cnqs we have.
 		 */
-		num_features++;
-
 		feat_num[QED_RDMA_CNQ] =
-			min_t(u32, RESC_NUM(p_hwfn, QED_SB) / num_features,
+			min_t(u32, RESC_NUM(p_hwfn, QED_SB) / 2,
 			      RESC_NUM(p_hwfn, QED_RDMA_CNQ_RAM));
-	}
 
-	feat_num[QED_PF_L2_QUE] = min_t(u32, RESC_NUM(p_hwfn, QED_SB) /
-						num_features,
-					RESC_NUM(p_hwfn, QED_L2_QUEUE));
+		non_l2_sbs = feat_num[QED_RDMA_CNQ];
+	}
 
-	memset(&sb_cnt_info, 0, sizeof(sb_cnt_info));
-	qed_int_get_num_sbs(p_hwfn, &sb_cnt_info);
-	feat_num[QED_VF_L2_QUE] =
-	    min_t(u32,
-		  RESC_NUM(p_hwfn, QED_L2_QUEUE) -
-		  FEAT_NUM(p_hwfn, QED_PF_L2_QUE), sb_cnt_info.sb_iov_cnt);
+	if (p_hwfn->hw_info.personality == QED_PCI_ETH_ROCE ||
+	    p_hwfn->hw_info.personality == QED_PCI_ETH) {
+		/* Start by allocating VF queues, then PF's */
+		memset(&sb_cnt_info, 0, sizeof(sb_cnt_info));
+		qed_int_get_num_sbs(p_hwfn, &sb_cnt_info);
+		feat_num[QED_VF_L2_QUE] = min_t(u32,
+						RESC_NUM(p_hwfn, QED_L2_QUEUE),
+						sb_cnt_info.sb_iov_cnt);
+		feat_num[QED_PF_L2_QUE] = min_t(u32,
+						RESC_NUM(p_hwfn, QED_SB) -
+						non_l2_sbs,
+						RESC_NUM(p_hwfn,
+							 QED_L2_QUEUE) -
+						FEAT_NUM(p_hwfn,
+							 QED_VF_L2_QUE));
+	}
 
 	DP_VERBOSE(p_hwfn,
 		   NETIF_MSG_PROBE,
-		   "#PF_L2_QUEUES=%d VF_L2_QUEUES=%d #ROCE_CNQ=%d #SBS=%d num_features=%d\n",
+		   "#PF_L2_QUEUES=%d VF_L2_QUEUES=%d #ROCE_CNQ=%d #SBS=%d\n",
 		   (int)FEAT_NUM(p_hwfn, QED_PF_L2_QUE),
 		   (int)FEAT_NUM(p_hwfn, QED_VF_L2_QUE),
 		   (int)FEAT_NUM(p_hwfn, QED_RDMA_CNQ),
-		   RESC_NUM(p_hwfn, QED_SB), num_features);
+		   RESC_NUM(p_hwfn, QED_SB));
 }
 
 static enum resource_id_enum qed_hw_get_mfw_res_id(enum qed_resources res_id)

drivers/net/ethernet/qlogic/qed/qed_mcp.h

@@ -484,8 +484,13 @@ int qed_mcp_bist_nvm_test_get_image_att(struct qed_hwfn *p_hwfn,
 				  qed_device_num_engines((_p_hwfn)->cdev)))
 
 struct qed_mcp_info {
-	/* Spinlock used for protecting the access to the MFW mailbox */
-	spinlock_t				lock;
+	/* List for mailbox commands which were sent and wait for a response */
+	struct list_head			cmd_list;
+
+	/* Spinlock used for protecting the access to the mailbox commands list
+	 * and the sending of the commands.
+	 */
+	spinlock_t				cmd_lock;
 
 	/* Spinlock used for syncing SW link-changes and link-changes
 	 * originating from attention context.
@@ -505,14 +510,16 @@ struct qed_mcp_info {
 	u8					*mfw_mb_cur;
 	u8					*mfw_mb_shadow;
 	u16					mfw_mb_length;
-	u16					mcp_hist;
+	u32					mcp_hist;
 };
 
 struct qed_mcp_mb_params {
 	u32			cmd;
 	u32			param;
-	union drv_union_data	*p_data_src;
-	union drv_union_data	*p_data_dst;
+	void			*p_data_src;
+	u8			data_src_size;
+	void			*p_data_dst;
+	u8			data_dst_size;
 	u32			mcp_resp;
 	u32			mcp_param;
 };