Merging upstream version 6.9.7.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 128 insertions, 43 deletions

diff --git a/drivers/net/ethernet/google/gve/gve.h b/drivers/net/ethernet/google/gve/gve.h
index b803491546..4814c96d5f 100644
--- a/drivers/net/ethernet/google/gve/gve.h
+++ b/drivers/net/ethernet/google/gve/gve.h
@@ -9,6 +9,7 @@
 
 #include <linux/dma-mapping.h>
 #include <linux/dmapool.h>
+#include <linux/ethtool_netlink.h>
 #include <linux/netdevice.h>
 #include <linux/pci.h>
 #include <linux/u64_stats_sync.h>
@@ -51,12 +52,16 @@
 
 #define GVE_DEFAULT_RX_BUFFER_SIZE 2048
 
+#define GVE_MAX_RX_BUFFER_SIZE 4096
+
 #define GVE_DEFAULT_RX_BUFFER_OFFSET 2048
 
 #define GVE_XDP_ACTIONS 5
 
 #define GVE_GQ_TX_MIN_PKT_DESC_BYTES 182
 
+#define GVE_DEFAULT_HEADER_BUFFER_SIZE 128
+
 #define DQO_QPL_DEFAULT_TX_PAGES 512
 #define DQO_QPL_DEFAULT_RX_PAGES 2048
 
@@ -150,6 +155,11 @@ struct gve_rx_compl_queue_dqo {
 	u32 mask; /* Mask for indices to the size of the ring */
 };
 
+struct gve_header_buf {
+	u8 *data;
+	dma_addr_t addr;
+};
+
 /* Stores state for tracking buffers posted to HW */
 struct gve_rx_buf_state_dqo {
 	/* The page posted to HW. */
@@ -252,19 +262,26 @@ struct gve_rx_ring {
 
 			/* track number of used buffers */
 			u16 used_buf_states_cnt;
+
+			/* Address info of the buffers for header-split */
+			struct gve_header_buf hdr_bufs;
 		} dqo;
 	};
 
 	u64 rbytes; /* free-running bytes received */
+	u64 rx_hsplit_bytes; /* free-running header bytes received */
 	u64 rpackets; /* free-running packets received */
 	u32 cnt; /* free-running total number of completed packets */
 	u32 fill_cnt; /* free-running total number of descs and buffs posted */
 	u32 mask; /* masks the cnt and fill_cnt to the size of the ring */
+	u64 rx_hsplit_pkt; /* free-running packets with headers split */
 	u64 rx_copybreak_pkt; /* free-running count of copybreak packets */
 	u64 rx_copied_pkt; /* free-running total number of copied packets */
 	u64 rx_skb_alloc_fail; /* free-running count of skb alloc fails */
 	u64 rx_buf_alloc_fail; /* free-running count of buffer alloc fails */
 	u64 rx_desc_err_dropped_pkt; /* free-running count of packets dropped by descriptor error */
+	/* free-running count of unsplit packets due to header buffer overflow or hdr_len is 0 */
+	u64 rx_hsplit_unsplit_pkt;
 	u64 rx_cont_packet_cnt; /* free-running multi-fragment packets received */
 	u64 rx_frag_flip_cnt; /* free-running count of rx segments where page_flip was used */
 	u64 rx_frag_copy_cnt; /* free-running count of rx segments copied */
@@ -622,6 +639,56 @@ struct gve_ptype_lut {
 	struct gve_ptype ptypes[GVE_NUM_PTYPES];
 };
 
+/* Parameters for allocating queue page lists */
+struct gve_qpls_alloc_cfg {
+	struct gve_qpl_config *qpl_cfg;
+	struct gve_queue_config *tx_cfg;
+	struct gve_queue_config *rx_cfg;
+
+	u16 num_xdp_queues;
+	bool raw_addressing;
+	bool is_gqi;
+
+	/* Allocated resources are returned here */
+	struct gve_queue_page_list *qpls;
+};
+
+/* Parameters for allocating resources for tx queues */
+struct gve_tx_alloc_rings_cfg {
+	struct gve_queue_config *qcfg;
+
+	/* qpls and qpl_cfg must already be allocated */
+	struct gve_queue_page_list *qpls;
+	struct gve_qpl_config *qpl_cfg;
+
+	u16 ring_size;
+	u16 start_idx;
+	u16 num_rings;
+	bool raw_addressing;
+
+	/* Allocated resources are returned here */
+	struct gve_tx_ring *tx;
+};
+
+/* Parameters for allocating resources for rx queues */
+struct gve_rx_alloc_rings_cfg {
+	/* tx config is also needed to determine QPL ids */
+	struct gve_queue_config *qcfg;
+	struct gve_queue_config *qcfg_tx;
+
+	/* qpls and qpl_cfg must already be allocated */
+	struct gve_queue_page_list *qpls;
+	struct gve_qpl_config *qpl_cfg;
+
+	u16 ring_size;
+	u16 packet_buffer_size;
+	bool raw_addressing;
+	bool enable_header_split;
+
+	/* Allocated resources are returned here */
+	struct gve_rx_ring *rx;
+};
+
 /* GVE_QUEUE_FORMAT_UNSPECIFIED must be zero since 0 is the default value
  * when the entire configure_device_resources command is zeroed out and the
  * queue_format is not specified.
@@ -729,13 +796,17 @@ struct gve_priv {
 	struct gve_ptype_lut *ptype_lut_dqo;
 
 	/* Must be a power of two. */
-	int data_buffer_size_dqo;
+	u16 data_buffer_size_dqo;
+	u16 max_rx_buffer_size; /* device limit */
 
 	enum gve_queue_format queue_format;
 
 	/* Interrupt coalescing settings */
 	u32 tx_coalesce_usecs;
 	u32 rx_coalesce_usecs;
+
+	u16 header_buf_size; /* device configured, header-split supported if non-zero */
+	bool header_split_enabled; /* True if the header split is enabled by the user */
 };
 
 enum gve_service_task_flags_bit {
@@ -917,14 +988,14 @@ static inline bool gve_is_qpl(struct gve_priv *priv)
 		priv->queue_format == GVE_DQO_QPL_FORMAT;
 }
 
-/* Returns the number of tx queue page lists
- */
-static inline u32 gve_num_tx_qpls(struct gve_priv *priv)
+/* Returns the number of tx queue page lists */
+static inline u32 gve_num_tx_qpls(const struct gve_queue_config *tx_cfg,
+				  int num_xdp_queues,
+				  bool is_qpl)
 {
-	if (!gve_is_qpl(priv))
+	if (!is_qpl)
 		return 0;
-
-	return priv->tx_cfg.num_queues + priv->num_xdp_queues;
+	return tx_cfg->num_queues + num_xdp_queues;
 }
 
 /* Returns the number of XDP tx queue page lists
@@ -937,14 +1008,13 @@ static inline u32 gve_num_xdp_qpls(struct gve_priv *priv)
 	return priv->num_xdp_queues;
 }
 
-/* Returns the number of rx queue page lists
- */
-static inline u32 gve_num_rx_qpls(struct gve_priv *priv)
+/* Returns the number of rx queue page lists */
+static inline u32 gve_num_rx_qpls(const struct gve_queue_config *rx_cfg,
+				  bool is_qpl)
 {
-	if (!gve_is_qpl(priv))
+	if (!is_qpl)
 		return 0;
-
-	return priv->rx_cfg.num_queues;
+	return rx_cfg->num_queues;
 }
 
 static inline u32 gve_tx_qpl_id(struct gve_priv *priv, int tx_qid)
@@ -957,59 +1027,59 @@ static inline u32 gve_rx_qpl_id(struct gve_priv *priv, int rx_qid)
 	return priv->tx_cfg.max_queues + rx_qid;
 }
 
+/* Returns the index into priv->qpls where a certain rx queue's QPL resides */
+static inline u32 gve_get_rx_qpl_id(const struct gve_queue_config *tx_cfg, int rx_qid)
+{
+	return tx_cfg->max_queues + rx_qid;
+}
+
 static inline u32 gve_tx_start_qpl_id(struct gve_priv *priv)
 {
 	return gve_tx_qpl_id(priv, 0);
 }
 
-static inline u32 gve_rx_start_qpl_id(struct gve_priv *priv)
+/* Returns the index into priv->qpls where the first rx queue's QPL resides */
+static inline u32 gve_rx_start_qpl_id(const struct gve_queue_config *tx_cfg)
 {
-	return gve_rx_qpl_id(priv, 0);
+	return gve_get_rx_qpl_id(tx_cfg, 0);
 }
 
-/* Returns a pointer to the next available tx qpl in the list of qpls
- */
+/* Returns a pointer to the next available tx qpl in the list of qpls */
 static inline
-struct gve_queue_page_list *gve_assign_tx_qpl(struct gve_priv *priv, int tx_qid)
+struct gve_queue_page_list *gve_assign_tx_qpl(struct gve_tx_alloc_rings_cfg *cfg,
+					      int tx_qid)
 {
-	int id = gve_tx_qpl_id(priv, tx_qid);
-
 	/* QPL already in use */
-	if (test_bit(id, priv->qpl_cfg.qpl_id_map))
+	if (test_bit(tx_qid, cfg->qpl_cfg->qpl_id_map))
 		return NULL;
-
-	set_bit(id, priv->qpl_cfg.qpl_id_map);
-	return &priv->qpls[id];
+	set_bit(tx_qid, cfg->qpl_cfg->qpl_id_map);
+	return &cfg->qpls[tx_qid];
 }
 
-/* Returns a pointer to the next available rx qpl in the list of qpls
- */
+/* Returns a pointer to the next available rx qpl in the list of qpls */
 static inline
-struct gve_queue_page_list *gve_assign_rx_qpl(struct gve_priv *priv, int rx_qid)
+struct gve_queue_page_list *gve_assign_rx_qpl(struct gve_rx_alloc_rings_cfg *cfg,
+					      int rx_qid)
 {
-	int id = gve_rx_qpl_id(priv, rx_qid);
-
+	int id = gve_get_rx_qpl_id(cfg->qcfg_tx, rx_qid);
 	/* QPL already in use */
-	if (test_bit(id, priv->qpl_cfg.qpl_id_map))
+	if (test_bit(id, cfg->qpl_cfg->qpl_id_map))
 		return NULL;
-
-	set_bit(id, priv->qpl_cfg.qpl_id_map);
-	return &priv->qpls[id];
+	set_bit(id, cfg->qpl_cfg->qpl_id_map);
+	return &cfg->qpls[id];
 }
 
-/* Unassigns the qpl with the given id
- */
-static inline void gve_unassign_qpl(struct gve_priv *priv, int id)
+/* Unassigns the qpl with the given id */
+static inline void gve_unassign_qpl(struct gve_qpl_config *qpl_cfg, int id)
 {
-	clear_bit(id, priv->qpl_cfg.qpl_id_map);
+	clear_bit(id, qpl_cfg->qpl_id_map);
 }
 
-/* Returns the correct dma direction for tx and rx qpls
- */
+/* Returns the correct dma direction for tx and rx qpls */
 static inline enum dma_data_direction gve_qpl_dma_dir(struct gve_priv *priv,
 						      int id)
 {
-	if (id < gve_rx_start_qpl_id(priv))
+	if (id < gve_rx_start_qpl_id(&priv->tx_cfg))
 		return DMA_TO_DEVICE;
 	else
 		return DMA_FROM_DEVICE;
@@ -1036,6 +1106,9 @@ static inline u32 gve_xdp_tx_start_queue_id(struct gve_priv *priv)
 	return gve_xdp_tx_queue_id(priv, 0);
 }
 
+/* gqi napi handler defined in gve_main.c */
+int gve_napi_poll(struct napi_struct *napi, int budget);
+
 /* buffers */
 int gve_alloc_page(struct gve_priv *priv, struct device *dev,
 		   struct page **page, dma_addr_t *dma,
@@ -1051,8 +1124,12 @@ int gve_xdp_xmit_one(struct gve_priv *priv, struct gve_tx_ring *tx,
 void gve_xdp_tx_flush(struct gve_priv *priv, u32 xdp_qid);
 bool gve_tx_poll(struct gve_notify_block *block, int budget);
 bool gve_xdp_poll(struct gve_notify_block *block, int budget);
-int gve_tx_alloc_rings(struct gve_priv *priv, int start_id, int num_rings);
-void gve_tx_free_rings_gqi(struct gve_priv *priv, int start_id, int num_rings);
+int gve_tx_alloc_rings_gqi(struct gve_priv *priv,
+			   struct gve_tx_alloc_rings_cfg *cfg);
+void gve_tx_free_rings_gqi(struct gve_priv *priv,
+			   struct gve_tx_alloc_rings_cfg *cfg);
+void gve_tx_start_ring_gqi(struct gve_priv *priv, int idx);
+void gve_tx_stop_ring_gqi(struct gve_priv *priv, int idx);
 u32 gve_tx_load_event_counter(struct gve_priv *priv,
 			      struct gve_tx_ring *tx);
 bool gve_tx_clean_pending(struct gve_priv *priv, struct gve_tx_ring *tx);
@@ -1061,7 +1138,15 @@ void gve_rx_write_doorbell(struct gve_priv *priv, struct gve_rx_ring *rx);
 int gve_rx_poll(struct gve_notify_block *block, int budget);
 bool gve_rx_work_pending(struct gve_rx_ring *rx);
 int gve_rx_alloc_rings(struct gve_priv *priv);
-void gve_rx_free_rings_gqi(struct gve_priv *priv);
+int gve_rx_alloc_rings_gqi(struct gve_priv *priv,
+			   struct gve_rx_alloc_rings_cfg *cfg);
+void gve_rx_free_rings_gqi(struct gve_priv *priv,
+			   struct gve_rx_alloc_rings_cfg *cfg);
+void gve_rx_start_ring_gqi(struct gve_priv *priv, int idx);
+void gve_rx_stop_ring_gqi(struct gve_priv *priv, int idx);
+u16 gve_get_pkt_buf_size(const struct gve_priv *priv, bool enable_hplit);
+bool gve_header_split_supported(const struct gve_priv *priv);
+int gve_set_hsplit_config(struct gve_priv *priv, u8 tcp_data_split);
 /* Reset */
 void gve_schedule_reset(struct gve_priv *priv);
 int gve_reset(struct gve_priv *priv, bool attempt_teardown);