Daniel Borkmann says:

====================
pull-request: bpf-next 2023-02-11

We've added 96 non-merge commits during the last 14 day(s) which contain
a total of 152 files changed, 4884 insertions(+), 962 deletions(-).

There is a minor conflict in drivers/net/ethernet/intel/ice/ice_main.c
between commit 5b246e533d01 ("ice: split probe into smaller functions")
from the net-next tree and commit 66c0e13ad236 ("drivers: net: turn on
XDP features") from the bpf-next tree. Remove the hunk given ice_cfg_netdev()
is otherwise there a 2nd time, and add XDP features to the existing
ice_cfg_netdev() one:

        [...]
        ice_set_netdev_features(netdev);
        netdev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |
                               NETDEV_XDP_ACT_XSK_ZEROCOPY;
        ice_set_ops(netdev);
        [...]

Stephen's merge conflict mail:
https://lore.kernel.org/bpf/20230207101951.21a114fa@canb.auug.org.au/

The main changes are:

1) Add support for BPF trampoline on s390x which finally allows to remove many
   test cases from the BPF CI's DENYLIST.s390x, from Ilya Leoshkevich.

2) Add multi-buffer XDP support to ice driver, from Maciej Fijalkowski.

3) Add capability to export the XDP features supported by the NIC.
   Along with that, add a XDP compliance test tool,
   from Lorenzo Bianconi & Marek Majtyka.

4) Add __bpf_kfunc tag for marking kernel functions as kfuncs,
   from David Vernet.

5) Add a deep dive documentation about the verifier's register
   liveness tracking algorithm, from Eduard Zingerman.

6) Fix and follow-up cleanups for resolve_btfids to be compiled
   as a host program to avoid cross compile issues,
   from Jiri Olsa & Ian Rogers.

7) Batch of fixes to the BPF selftest for xdp_hw_metadata which resulted
   when testing on different NICs, from Jesper Dangaard Brouer.

8) Fix libbpf to better detect kernel version code on Debian, from Hao Xiang.

9) Extend libbpf to add an option for when the perf buffer should
   wake up, from Jon Doron.

10) Follow-up fix on xdp_metadata selftest to just consume on TX
    completion, from Stanislav Fomichev.

11) Extend the kfuncs.rst document with description on kfunc
    lifecycle & stability expectations, from David Vernet.

12) Fix bpftool prog profile to skip attaching to offline CPUs,
    from Tonghao Zhang.

====================

Link: https://lore.kernel.org/r/20230211002037.8489-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 35 insertions, 19 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_txrx.h b/drivers/net/ethernet/intel/ice/ice_txrx.h
index 4fd0e5d0a313..efa3d378f19e 100644
--- a/drivers/net/ethernet/intel/ice/ice_txrx.h
+++ b/drivers/net/ethernet/intel/ice/ice_txrx.h
@@ -9,10 +9,12 @@
 #define ICE_DFLT_IRQ_WORK	256
 #define ICE_RXBUF_3072		3072
 #define ICE_RXBUF_2048		2048
+#define ICE_RXBUF_1664		1664
 #define ICE_RXBUF_1536		1536
 #define ICE_MAX_CHAINED_RX_BUFS	5
 #define ICE_MAX_BUF_TXD		8
 #define ICE_MIN_TX_LEN		17
+#define ICE_MAX_FRAME_LEGACY_RX 8320
 
 /* The size limit for a transmit buffer in a descriptor is (16K - 1).
  * In order to align with the read requests we will align the value to
@@ -110,6 +112,10 @@ static inline int ice_skb_pad(void)
 	(u16)((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
 	      (R)->next_to_clean - (R)->next_to_use - 1)
 
+#define ICE_RX_DESC_UNUSED(R)	\
+	((((R)->first_desc > (R)->next_to_use) ? 0 : (R)->count) + \
+	      (R)->first_desc - (R)->next_to_use - 1)
+
 #define ICE_RING_QUARTER(R) ((R)->count >> 2)
 
 #define ICE_TX_FLAGS_TSO	BIT(0)
@@ -134,6 +140,7 @@ static inline int ice_skb_pad(void)
 #define ICE_XDP_TX		BIT(1)
 #define ICE_XDP_REDIR		BIT(2)
 #define ICE_XDP_EXIT		BIT(3)
+#define ICE_SKB_CONSUMED	ICE_XDP_CONSUMED
 
 #define ICE_RX_DMA_ATTR \
 	(DMA_ATTR_SKIP_CPU_SYNC | DMA_ATTR_WEAK_ORDERING)
@@ -143,13 +150,20 @@ static inline int ice_skb_pad(void)
 #define ICE_TXD_LAST_DESC_CMD (ICE_TX_DESC_CMD_EOP | ICE_TX_DESC_CMD_RS)
 
 struct ice_tx_buf {
-	struct ice_tx_desc *next_to_watch;
+	union {
+		struct ice_tx_desc *next_to_watch;
+		u32 rs_idx;
+	};
 	union {
 		struct sk_buff *skb;
 		void *raw_buf; /* used for XDP */
+		struct xdp_buff *xdp; /* used for XDP_TX ZC */
 	};
 	unsigned int bytecount;
-	unsigned short gso_segs;
+	union {
+		unsigned int gso_segs;
+		unsigned int nr_frags; /* used for mbuf XDP */
+	};
 	u32 tx_flags;
 	DEFINE_DMA_UNMAP_LEN(len);
 	DEFINE_DMA_UNMAP_ADDR(dma);
@@ -170,7 +184,9 @@ struct ice_rx_buf {
 	dma_addr_t dma;
 	struct page *page;
 	unsigned int page_offset;
-	u16 pagecnt_bias;
+	unsigned int pgcnt;
+	unsigned int act;
+	unsigned int pagecnt_bias;
 };
 
 struct ice_q_stats {
@@ -273,42 +289,44 @@ struct ice_rx_ring {
 	struct ice_vsi *vsi;		/* Backreference to associated VSI */
 	struct ice_q_vector *q_vector;	/* Backreference to associated vector */
 	u8 __iomem *tail;
+	u16 q_index;			/* Queue number of ring */
+
+	u16 count;			/* Number of descriptors */
+	u16 reg_idx;			/* HW register index of the ring */
+	u16 next_to_alloc;
+	/* CL2 - 2nd cacheline starts here */
 	union {
 		struct ice_rx_buf *rx_buf;
 		struct xdp_buff **xdp_buf;
 	};
-	/* CL2 - 2nd cacheline starts here */
-	struct xdp_rxq_info xdp_rxq;
+	struct xdp_buff xdp;
 	/* CL3 - 3rd cacheline starts here */
-	u16 q_index;			/* Queue number of ring */
-
-	u16 count;			/* Number of descriptors */
-	u16 reg_idx;			/* HW register index of the ring */
+	struct bpf_prog *xdp_prog;
+	u16 rx_offset;
 
 	/* used in interrupt processing */
 	u16 next_to_use;
 	u16 next_to_clean;
-	u16 next_to_alloc;
-	u16 rx_offset;
-	u16 rx_buf_len;
+	u16 first_desc;
 
 	/* stats structs */
 	struct ice_ring_stats *ring_stats;
 
 	struct rcu_head rcu;		/* to avoid race on free */
-	/* CL4 - 3rd cacheline starts here */
+	/* CL4 - 4th cacheline starts here */
 	struct ice_channel *ch;
-	struct bpf_prog *xdp_prog;
 	struct ice_tx_ring *xdp_ring;
 	struct xsk_buff_pool *xsk_pool;
-	struct sk_buff *skb;
 	dma_addr_t dma;			/* physical address of ring */
 	u64 cached_phctime;
+	u16 rx_buf_len;
 	u8 dcb_tc;			/* Traffic class of ring */
 	u8 ptp_rx;
 #define ICE_RX_FLAGS_RING_BUILD_SKB	BIT(1)
 #define ICE_RX_FLAGS_CRC_STRIP_DIS	BIT(2)
 	u8 flags;
+	/* CL5 - 5th cacheline starts here */
+	struct xdp_rxq_info xdp_rxq;
 } ____cacheline_internodealigned_in_smp;
 
 struct ice_tx_ring {
@@ -326,12 +344,11 @@ struct ice_tx_ring {
 	struct xsk_buff_pool *xsk_pool;
 	u16 next_to_use;
 	u16 next_to_clean;
-	u16 next_rs;
-	u16 next_dd;
 	u16 q_handle;			/* Queue handle per TC */
 	u16 reg_idx;			/* HW register index of the ring */
 	u16 count;			/* Number of descriptors */
 	u16 q_index;			/* Queue number of ring */
+	u16 xdp_tx_active;
 	/* stats structs */
 	struct ice_ring_stats *ring_stats;
 	/* CL3 - 3rd cacheline starts here */
@@ -342,7 +359,6 @@ struct ice_tx_ring {
 	spinlock_t tx_lock;
 	u32 txq_teid;			/* Added Tx queue TEID */
 	/* CL4 - 4th cacheline starts here */
-	u16 xdp_tx_active;
 #define ICE_TX_FLAGS_RING_XDP		BIT(0)
 #define ICE_TX_FLAGS_RING_VLAN_L2TAG1	BIT(1)
 #define ICE_TX_FLAGS_RING_VLAN_L2TAG2	BIT(2)
@@ -431,7 +447,7 @@ static inline unsigned int ice_rx_pg_order(struct ice_rx_ring *ring)
 
 union ice_32b_rx_flex_desc;
 
-bool ice_alloc_rx_bufs(struct ice_rx_ring *rxr, u16 cleaned_count);
+bool ice_alloc_rx_bufs(struct ice_rx_ring *rxr, unsigned int cleaned_count);
 netdev_tx_t ice_start_xmit(struct sk_buff *skb, struct net_device *netdev);
 u16
 ice_select_queue(struct net_device *dev, struct sk_buff *skb,