Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue

Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2024-08-20 (ice)

This series contains updates to ice driver only.

Maciej fixes issues with Rx data path on architectures with
PAGE_SIZE >= 8192; correcting page reuse usage and calculations for
last offset and truesize.

Michal corrects assignment of devlink port number to use PF id.

* '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
  ice: use internal pf id instead of function number
  ice: fix truesize operations for PAGE_SIZE >= 8192
  ice: fix ICE_LAST_OFFSET formula
  ice: fix page reuse when PAGE_SIZE is over 8k
====================

Link: https://patch.msgid.link/20240820215620.1245310-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

3 files changed, 26 insertions, 46 deletions

diff --git a/drivers/net/ethernet/intel/ice/devlink/devlink_port.c b/drivers/net/ethernet/intel/ice/devlink/devlink_port.c
index 00fed5a61d62..62ef8e2fb5f1 100644
--- a/drivers/net/ethernet/intel/ice/devlink/devlink_port.c
+++ b/drivers/net/ethernet/intel/ice/devlink/devlink_port.c
@@ -337,7 +337,7 @@ int ice_devlink_create_pf_port(struct ice_pf *pf)
 		return -EIO;
 
 	attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL;
-	attrs.phys.port_number = pf->hw.bus.func;
+	attrs.phys.port_number = pf->hw.pf_id;
 
 	/* As FW supports only port split options for whole device,
 	 * set port split options only for first PF.
@@ -455,7 +455,7 @@ int ice_devlink_create_vf_port(struct ice_vf *vf)
 		return -EINVAL;
 
 	attrs.flavour = DEVLINK_PORT_FLAVOUR_PCI_VF;
-	attrs.pci_vf.pf = pf->hw.bus.func;
+	attrs.pci_vf.pf = pf->hw.pf_id;
 	attrs.pci_vf.vf = vf->vf_id;
 
 	ice_devlink_set_switch_id(pf, &attrs.switch_id);
diff --git a/drivers/net/ethernet/intel/ice/ice_base.c b/drivers/net/ethernet/intel/ice/ice_base.c
index 1facf179a96f..f448d3a84564 100644
--- a/drivers/net/ethernet/intel/ice/ice_base.c
+++ b/drivers/net/ethernet/intel/ice/ice_base.c
@@ -513,6 +513,25 @@ static void ice_xsk_pool_fill_cb(struct ice_rx_ring *ring)
 }
 
 /**
+ * ice_get_frame_sz - calculate xdp_buff::frame_sz
+ * @rx_ring: the ring being configured
+ *
+ * Return frame size based on underlying PAGE_SIZE
+ */
+static unsigned int ice_get_frame_sz(struct ice_rx_ring *rx_ring)
+{
+	unsigned int frame_sz;
+
+#if (PAGE_SIZE >= 8192)
+	frame_sz = rx_ring->rx_buf_len;
+#else
+	frame_sz = ice_rx_pg_size(rx_ring) / 2;
+#endif
+
+	return frame_sz;
+}
+
+/**
  * ice_vsi_cfg_rxq - Configure an Rx queue
  * @ring: the ring being configured
  *
@@ -576,7 +595,7 @@ static int ice_vsi_cfg_rxq(struct ice_rx_ring *ring)
 		}
 	}
 
-	xdp_init_buff(&ring->xdp, ice_rx_pg_size(ring) / 2, &ring->xdp_rxq);
+	xdp_init_buff(&ring->xdp, ice_get_frame_sz(ring), &ring->xdp_rxq);
 	ring->xdp.data = NULL;
 	ring->xdp_ext.pkt_ctx = &ring->pkt_ctx;
 	err = ice_setup_rx_ctx(ring);
diff --git a/drivers/net/ethernet/intel/ice/ice_txrx.c b/drivers/net/ethernet/intel/ice/ice_txrx.c
index 8d25b6981269..c9bc3f1add5d 100644
--- a/drivers/net/ethernet/intel/ice/ice_txrx.c
+++ b/drivers/net/ethernet/intel/ice/ice_txrx.c
@@ -522,30 +522,6 @@ err:
 }
 
 /**
- * ice_rx_frame_truesize
- * @rx_ring: ptr to Rx ring
- * @size: size
- *
- * calculate the truesize with taking into the account PAGE_SIZE of
- * underlying arch
- */
-static unsigned int
-ice_rx_frame_truesize(struct ice_rx_ring *rx_ring, const unsigned int size)
-{
-	unsigned int truesize;
-
-#if (PAGE_SIZE < 8192)
-	truesize = ice_rx_pg_size(rx_ring) / 2; /* Must be power-of-2 */
-#else
-	truesize = rx_ring->rx_offset ?
-		SKB_DATA_ALIGN(rx_ring->rx_offset + size) +
-		SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) :
-		SKB_DATA_ALIGN(size);
-#endif
-	return truesize;
-}
-
-/**
  * ice_run_xdp - Executes an XDP program on initialized xdp_buff
  * @rx_ring: Rx ring
  * @xdp: xdp_buff used as input to the XDP program
@@ -837,16 +813,15 @@ ice_can_reuse_rx_page(struct ice_rx_buf *rx_buf)
 	if (!dev_page_is_reusable(page))
 		return false;
 
-#if (PAGE_SIZE < 8192)
 	/* if we are only owner of page we can reuse it */
 	if (unlikely(rx_buf->pgcnt - pagecnt_bias > 1))
 		return false;
-#else
+#if (PAGE_SIZE >= 8192)
 #define ICE_LAST_OFFSET \
-	(SKB_WITH_OVERHEAD(PAGE_SIZE) - ICE_RXBUF_2048)
+	(SKB_WITH_OVERHEAD(PAGE_SIZE) - ICE_RXBUF_3072)
 	if (rx_buf->page_offset > ICE_LAST_OFFSET)
 		return false;
-#endif /* PAGE_SIZE < 8192) */
+#endif /* PAGE_SIZE >= 8192) */
 
 	/* If we have drained the page fragment pool we need to update
 	 * the pagecnt_bias and page count so that we fully restock the
@@ -949,12 +924,7 @@ ice_get_rx_buf(struct ice_rx_ring *rx_ring, const unsigned int size,
 	struct ice_rx_buf *rx_buf;
 
 	rx_buf = &rx_ring->rx_buf[ntc];
-	rx_buf->pgcnt =
-#if (PAGE_SIZE < 8192)
-		page_count(rx_buf->page);
-#else
-		0;
-#endif
+	rx_buf->pgcnt = page_count(rx_buf->page);
 	prefetchw(rx_buf->page);
 
 	if (!size)
@@ -1160,11 +1130,6 @@ int ice_clean_rx_irq(struct ice_rx_ring *rx_ring, int budget)
 	bool failure;
 	u32 first;
 
-	/* Frame size depend on rx_ring setup when PAGE_SIZE=4K */
-#if (PAGE_SIZE < 8192)
-	xdp->frame_sz = ice_rx_frame_truesize(rx_ring, 0);
-#endif
-
 	xdp_prog = READ_ONCE(rx_ring->xdp_prog);
 	if (xdp_prog) {
 		xdp_ring = rx_ring->xdp_ring;
@@ -1223,10 +1188,6 @@ int ice_clean_rx_irq(struct ice_rx_ring *rx_ring, int budget)
 			hard_start = page_address(rx_buf->page) + rx_buf->page_offset -
 				     offset;
 			xdp_prepare_buff(xdp, hard_start, offset, size, !!offset);
-#if (PAGE_SIZE > 4096)
-			/* At larger PAGE_SIZE, frame_sz depend on len size */
-			xdp->frame_sz = ice_rx_frame_truesize(rx_ring, size);
-#endif
 			xdp_buff_clear_frags_flag(xdp);
 		} else if (ice_add_xdp_frag(rx_ring, xdp, rx_buf, size)) {
 			break;