diff mbox series

[net,1/2] net: hns: fix wrong head when modify the tx feature when sending packets

Message ID 20231201102703.4134592-2-shaojijie@huawei.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series There are some bugfix for the HNS ethernet driver | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net
netdev/ynl success SINGLE THREAD; Generated files up to date; no warnings/errors;
netdev/fixes_present success Fixes tag present in non-next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 1115 this patch: 1115
netdev/cc_maintainers warning 1 maintainers not CCed: u.kleine-koenig@pengutronix.de
netdev/build_clang success Errors and warnings before: 1142 this patch: 1142
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success Fixes tag looks correct
netdev/build_allmodconfig_warn success Errors and warnings before: 1142 this patch: 1142
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 111 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Jijie Shao Dec. 1, 2023, 10:27 a.m. UTC 
From: Yonglong Liu <liuyonglong@huawei.com>

When modify the tx feature, the hns driver will modify the
maybe_stop_tx() and fill_desc() functions, if the modify happens
during packet sending, will cause the hardware and software
pointers do not match, and the port can not work anymore.

This patch deletes the maybe_stop_tx() and fill_desc() functions
modification when setting tx feature, and use the skb_is_gro()
to determine use tso functions or non-tso functions when packets
sending.

Fixes: 38f616da1c28 ("net:hns: Add support of ethtool TSO set option for Hip06 in HNS")
Signed-off-by: Yonglong Liu <liuyonglong@huawei.com>
Signed-off-by: Jijie Shao <shaojijie@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns/hns_enet.c | 53 +++++++++++--------
 drivers/net/ethernet/hisilicon/hns/hns_enet.h |  3 +-
 2 files changed, 33 insertions(+), 23 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.c b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
index 0900abf5c508..8a713eed4465 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
@@ -142,7 +142,8 @@  MODULE_DEVICE_TABLE(acpi, hns_enet_acpi_match);
 
 static void fill_desc(struct hnae_ring *ring, void *priv,
 		      int size, dma_addr_t dma, int frag_end,
-		      int buf_num, enum hns_desc_type type, int mtu)
+		      int buf_num, enum hns_desc_type type, int mtu,
+		      bool is_gso)
 {
 	struct hnae_desc *desc = &ring->desc[ring->next_to_use];
 	struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use];
@@ -275,6 +276,15 @@  static int hns_nic_maybe_stop_tso(
 	return 0;
 }
 
+static int hns_nic_maybe_stop_tx_v2(struct sk_buff **out_skb, int *bnum,
+				    struct hnae_ring *ring)
+{
+	if (skb_is_gso(*out_skb))
+		return hns_nic_maybe_stop_tso(out_skb, bnum, ring);
+	else
+		return hns_nic_maybe_stop_tx(out_skb, bnum, ring);
+}
+
 static void fill_tso_desc(struct hnae_ring *ring, void *priv,
 			  int size, dma_addr_t dma, int frag_end,
 			  int buf_num, enum hns_desc_type type, int mtu)
@@ -300,6 +310,19 @@  static void fill_tso_desc(struct hnae_ring *ring, void *priv,
 				mtu);
 }
 
+static void fill_desc_v2(struct hnae_ring *ring, void *priv,
+			 int size, dma_addr_t dma, int frag_end,
+			 int buf_num, enum hns_desc_type type, int mtu,
+			 bool is_gso)
+{
+	if (is_gso)
+		fill_tso_desc(ring, priv, size, dma, frag_end, buf_num, type,
+			      mtu);
+	else
+		fill_v2_desc(ring, priv, size, dma, frag_end, buf_num, type,
+			     mtu);
+}
+
 netdev_tx_t hns_nic_net_xmit_hw(struct net_device *ndev,
 				struct sk_buff *skb,
 				struct hns_nic_ring_data *ring_data)
@@ -313,6 +336,7 @@  netdev_tx_t hns_nic_net_xmit_hw(struct net_device *ndev,
 	int seg_num;
 	dma_addr_t dma;
 	int size, next_to_use;
+	bool is_gso;
 	int i;
 
 	switch (priv->ops.maybe_stop_tx(&skb, &buf_num, ring)) {
@@ -339,8 +363,9 @@  netdev_tx_t hns_nic_net_xmit_hw(struct net_device *ndev,
 		ring->stats.sw_err_cnt++;
 		goto out_err_tx_ok;
 	}
+	is_gso = skb_is_gso(skb);
 	priv->ops.fill_desc(ring, skb, size, dma, seg_num == 1 ? 1 : 0,
-			    buf_num, DESC_TYPE_SKB, ndev->mtu);
+			    buf_num, DESC_TYPE_SKB, ndev->mtu, is_gso);
 
 	/* fill the fragments */
 	for (i = 1; i < seg_num; i++) {
@@ -354,7 +379,7 @@  netdev_tx_t hns_nic_net_xmit_hw(struct net_device *ndev,
 		}
 		priv->ops.fill_desc(ring, skb_frag_page(frag), size, dma,
 				    seg_num - 1 == i ? 1 : 0, buf_num,
-				    DESC_TYPE_PAGE, ndev->mtu);
+				    DESC_TYPE_PAGE, ndev->mtu, is_gso);
 	}
 
 	/*complete translate all packets*/
@@ -1776,15 +1801,6 @@  static int hns_nic_set_features(struct net_device *netdev,
 			netdev_info(netdev, "enet v1 do not support tso!\n");
 		break;
 	default:
-		if (features & (NETIF_F_TSO | NETIF_F_TSO6)) {
-			priv->ops.fill_desc = fill_tso_desc;
-			priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tso;
-			/* The chip only support 7*4096 */
-			netif_set_tso_max_size(netdev, 7 * 4096);
-		} else {
-			priv->ops.fill_desc = fill_v2_desc;
-			priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
-		}
 		break;
 	}
 	netdev->features = features;
@@ -2159,16 +2175,9 @@  static void hns_nic_set_priv_ops(struct net_device *netdev)
 		priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
 	} else {
 		priv->ops.get_rxd_bnum = get_v2rx_desc_bnum;
-		if ((netdev->features & NETIF_F_TSO) ||
-		    (netdev->features & NETIF_F_TSO6)) {
-			priv->ops.fill_desc = fill_tso_desc;
-			priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tso;
-			/* This chip only support 7*4096 */
-			netif_set_tso_max_size(netdev, 7 * 4096);
-		} else {
-			priv->ops.fill_desc = fill_v2_desc;
-			priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
-		}
+		priv->ops.fill_desc = fill_desc_v2;
+		priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx_v2;
+		netif_set_tso_max_size(netdev, 7 * 4096);
 		/* enable tso when init
 		 * control tso on/off through TSE bit in bd
 		 */
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.h b/drivers/net/ethernet/hisilicon/hns/hns_enet.h
index ffa9d6573f54..3f3ee032f631 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_enet.h
+++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.h
@@ -44,7 +44,8 @@  struct hns_nic_ring_data {
 struct hns_nic_ops {
 	void (*fill_desc)(struct hnae_ring *ring, void *priv,
 			  int size, dma_addr_t dma, int frag_end,
-			  int buf_num, enum hns_desc_type type, int mtu);
+			  int buf_num, enum hns_desc_type type, int mtu,
+			  bool is_gso);
 	int (*maybe_stop_tx)(struct sk_buff **out_skb,
 			     int *bnum, struct hnae_ring *ring);
 	void (*get_rxd_bnum)(u32 bnum_flag, int *out_bnum);