diff options
author | Yunsheng Lin <linyunsheng@huawei.com> | 2020-01-04 10:49:24 +0800 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2020-01-06 13:26:25 -0800 |
commit | 698a89541c223b247a3b08cd0b16c97344445d96 (patch) | |
tree | f808555c3296282424936eeb9ba78effe8c95ec8 | |
parent | df2c2ba831a04083ad7485684896eeb090ca3c7d (diff) | |
download | linux-698a89541c223b247a3b08cd0b16c97344445d96.tar.bz2 |
net: hns3: add trace event support for HNS3 driver
This adds trace support for HNS3 driver. It also declares
some events which could be used to trace the events when a
TX/RX BD is processed, and other events which are related to
the processing of sk_buff, such as TSO, GRO.
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r-- | drivers/net/ethernet/hisilicon/hns3/Makefile | 2 | ||||
-rw-r--r-- | drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 32 | ||||
-rw-r--r-- | drivers/net/ethernet/hisilicon/hns3/hns3_enet.h | 1 | ||||
-rw-r--r-- | drivers/net/ethernet/hisilicon/hns3/hns3_trace.h | 139 |
4 files changed, 172 insertions, 2 deletions
diff --git a/drivers/net/ethernet/hisilicon/hns3/Makefile b/drivers/net/ethernet/hisilicon/hns3/Makefile index d01bf536eb86..7aa2fac76c5e 100644 --- a/drivers/net/ethernet/hisilicon/hns3/Makefile +++ b/drivers/net/ethernet/hisilicon/hns3/Makefile @@ -3,6 +3,8 @@ # Makefile for the HISILICON network device drivers. # +ccflags-y += -I$(srctree)/$(src) + obj-$(CONFIG_HNS3) += hns3pf/ obj-$(CONFIG_HNS3) += hns3vf/ diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c index aee5facc89b5..9a0694ae54c2 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c @@ -24,6 +24,12 @@ #include "hnae3.h" #include "hns3_enet.h" +/* All hns3 tracepoints are defined by the include below, which + * must be included exactly once across the whole kernel with + * CREATE_TRACE_POINTS defined + */ +#define CREATE_TRACE_POINTS +#include "hns3_trace.h" #define hns3_set_field(origin, shift, val) ((origin) |= ((val) << (shift))) #define hns3_tx_bd_count(S) DIV_ROUND_UP(S, HNS3_MAX_BD_SIZE) @@ -734,6 +740,8 @@ static int hns3_set_tso(struct sk_buff *skb, u32 *paylen, /* get MSS for TSO */ *mss = skb_shinfo(skb)->gso_size; + trace_hns3_tso(skb); + return 0; } @@ -1138,6 +1146,7 @@ static int hns3_fill_desc(struct hns3_enet_ring *ring, void *priv, desc->tx.bdtp_fe_sc_vld_ra_ri = cpu_to_le16(BIT(HNS3_TXD_VLD_B)); + trace_hns3_tx_desc(ring, ring->next_to_use); ring_ptr_move_fw(ring, next_to_use); return HNS3_LIKELY_BD_NUM; } @@ -1161,6 +1170,7 @@ static int hns3_fill_desc(struct hns3_enet_ring *ring, void *priv, desc->tx.bdtp_fe_sc_vld_ra_ri = cpu_to_le16(BIT(HNS3_TXD_VLD_B)); + trace_hns3_tx_desc(ring, ring->next_to_use); /* move ring pointer to next */ ring_ptr_move_fw(ring, next_to_use); @@ -1286,6 +1296,14 @@ static bool hns3_skb_need_linearized(struct sk_buff *skb, unsigned int *bd_size, return false; } +void hns3_shinfo_pack(struct skb_shared_info *shinfo, __u32 *size) +{ + int i = 0; + + for (i = 0; i < MAX_SKB_FRAGS; i++) + size[i] = skb_frag_size(&shinfo->frags[i]); +} + static int hns3_nic_maybe_stop_tx(struct hns3_enet_ring *ring, struct net_device *netdev, struct sk_buff *skb) @@ -1297,8 +1315,10 @@ static int hns3_nic_maybe_stop_tx(struct hns3_enet_ring *ring, bd_num = hns3_tx_bd_num(skb, bd_size); if (unlikely(bd_num > HNS3_MAX_NON_TSO_BD_NUM)) { if (bd_num <= HNS3_MAX_TSO_BD_NUM && skb_is_gso(skb) && - !hns3_skb_need_linearized(skb, bd_size, bd_num)) + !hns3_skb_need_linearized(skb, bd_size, bd_num)) { + trace_hns3_over_8bd(skb); goto out; + } if (__skb_linearize(skb)) return -ENOMEM; @@ -1306,8 +1326,10 @@ static int hns3_nic_maybe_stop_tx(struct hns3_enet_ring *ring, bd_num = hns3_tx_bd_count(skb->len); if ((skb_is_gso(skb) && bd_num > HNS3_MAX_TSO_BD_NUM) || (!skb_is_gso(skb) && - bd_num > HNS3_MAX_NON_TSO_BD_NUM)) + bd_num > HNS3_MAX_NON_TSO_BD_NUM)) { + trace_hns3_over_8bd(skb); return -ENOMEM; + } u64_stats_update_begin(&ring->syncp); ring->stats.tx_copy++; @@ -1448,6 +1470,7 @@ out: (ring->desc_num - 1); ring->desc[pre_ntu].tx.bdtp_fe_sc_vld_ra_ri |= cpu_to_le16(BIT(HNS3_TXD_FE_B)); + trace_hns3_tx_desc(ring, pre_ntu); /* Complete translate all packets */ dev_queue = netdev_get_tx_queue(netdev, ring->queue_index); @@ -2700,6 +2723,9 @@ static int hns3_gro_complete(struct sk_buff *skb, u32 l234info) skb->csum_start = (unsigned char *)th - skb->head; skb->csum_offset = offsetof(struct tcphdr, check); skb->ip_summed = CHECKSUM_PARTIAL; + + trace_hns3_gro(skb); + return 0; } @@ -2836,6 +2862,7 @@ static int hns3_alloc_skb(struct hns3_enet_ring *ring, unsigned int length, return -ENOMEM; } + trace_hns3_rx_desc(ring); prefetchw(skb->data); ring->pending_buf = 1; @@ -2910,6 +2937,7 @@ static int hns3_add_frag(struct hns3_enet_ring *ring) } hns3_nic_reuse_page(skb, ring->frag_num++, ring, 0, desc_cb); + trace_hns3_rx_desc(ring); ring_ptr_move_fw(ring, next_to_clean); ring->pending_buf++; } while (!(bd_base_info & BIT(HNS3_RXD_FE_B))); diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h index 9d47abd5c37c..abefd7a179f7 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h @@ -673,4 +673,5 @@ void hns3_dbg_init(struct hnae3_handle *handle); void hns3_dbg_uninit(struct hnae3_handle *handle); void hns3_dbg_register_debugfs(const char *debugfs_dir_name); void hns3_dbg_unregister_debugfs(void); +void hns3_shinfo_pack(struct skb_shared_info *shinfo, __u32 *size); #endif diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_trace.h b/drivers/net/ethernet/hisilicon/hns3/hns3_trace.h new file mode 100644 index 000000000000..7bddcca148a5 --- /dev/null +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_trace.h @@ -0,0 +1,139 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* Copyright (c) 2018-2019 Hisilicon Limited. */ + +/* This must be outside ifdef _HNS3_TRACE_H */ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM hns3 + +#if !defined(_HNS3_TRACE_H_) || defined(TRACE_HEADER_MULTI_READ) +#define _HNS3_TRACE_H_ + +#include <linux/tracepoint.h> + +#define DESC_NR (sizeof(struct hns3_desc) / sizeof(u32)) + +DECLARE_EVENT_CLASS(hns3_skb_template, + TP_PROTO(struct sk_buff *skb), + TP_ARGS(skb), + + TP_STRUCT__entry( + __field(unsigned int, headlen) + __field(unsigned int, len) + __field(__u8, nr_frags) + __field(__u8, ip_summed) + __field(unsigned int, hdr_len) + __field(unsigned short, gso_size) + __field(unsigned short, gso_segs) + __field(unsigned int, gso_type) + __field(bool, fraglist) + __array(__u32, size, MAX_SKB_FRAGS) + ), + + TP_fast_assign( + __entry->headlen = skb_headlen(skb); + __entry->len = skb->len; + __entry->nr_frags = skb_shinfo(skb)->nr_frags; + __entry->gso_size = skb_shinfo(skb)->gso_size; + __entry->gso_segs = skb_shinfo(skb)->gso_segs; + __entry->gso_type = skb_shinfo(skb)->gso_type; + __entry->hdr_len = skb->encapsulation ? + skb_inner_transport_offset(skb) + inner_tcp_hdrlen(skb) : + skb_transport_offset(skb) + tcp_hdrlen(skb); + __entry->ip_summed = skb->ip_summed; + __entry->fraglist = skb_has_frag_list(skb); + hns3_shinfo_pack(skb_shinfo(skb), __entry->size); + ), + + TP_printk( + "len: %u, %u, %u, cs: %u, gso: %u, %u, %x, frag(%d %u): %s", + __entry->headlen, __entry->len, __entry->hdr_len, + __entry->ip_summed, __entry->gso_size, __entry->gso_segs, + __entry->gso_type, __entry->fraglist, __entry->nr_frags, + __print_array(__entry->size, MAX_SKB_FRAGS, sizeof(__u32)) + ) +); + +DEFINE_EVENT(hns3_skb_template, hns3_over_8bd, + TP_PROTO(struct sk_buff *skb), + TP_ARGS(skb)); + +DEFINE_EVENT(hns3_skb_template, hns3_gro, + TP_PROTO(struct sk_buff *skb), + TP_ARGS(skb)); + +DEFINE_EVENT(hns3_skb_template, hns3_tso, + TP_PROTO(struct sk_buff *skb), + TP_ARGS(skb)); + +TRACE_EVENT(hns3_tx_desc, + TP_PROTO(struct hns3_enet_ring *ring, int cur_ntu), + TP_ARGS(ring, cur_ntu), + + TP_STRUCT__entry( + __field(int, index) + __field(int, ntu) + __field(int, ntc) + __field(dma_addr_t, desc_dma) + __array(u32, desc, DESC_NR) + __string(devname, ring->tqp->handle->kinfo.netdev->name) + ), + + TP_fast_assign( + __entry->index = ring->tqp->tqp_index; + __entry->ntu = ring->next_to_use; + __entry->ntc = ring->next_to_clean; + __entry->desc_dma = ring->desc_dma_addr, + memcpy(__entry->desc, &ring->desc[cur_ntu], + sizeof(struct hns3_desc)); + __assign_str(devname, ring->tqp->handle->kinfo.netdev->name); + ), + + TP_printk( + "%s-%d-%d/%d desc(%pad): %s", + __get_str(devname), __entry->index, __entry->ntu, + __entry->ntc, &__entry->desc_dma, + __print_array(__entry->desc, DESC_NR, sizeof(u32)) + ) +); + +TRACE_EVENT(hns3_rx_desc, + TP_PROTO(struct hns3_enet_ring *ring), + TP_ARGS(ring), + + TP_STRUCT__entry( + __field(int, index) + __field(int, ntu) + __field(int, ntc) + __field(dma_addr_t, desc_dma) + __field(dma_addr_t, buf_dma) + __array(u32, desc, DESC_NR) + __string(devname, ring->tqp->handle->kinfo.netdev->name) + ), + + TP_fast_assign( + __entry->index = ring->tqp->tqp_index; + __entry->ntu = ring->next_to_use; + __entry->ntc = ring->next_to_clean; + __entry->desc_dma = ring->desc_dma_addr; + __entry->buf_dma = ring->desc_cb[ring->next_to_clean].dma; + memcpy(__entry->desc, &ring->desc[ring->next_to_clean], + sizeof(struct hns3_desc)); + __assign_str(devname, ring->tqp->handle->kinfo.netdev->name); + ), + + TP_printk( + "%s-%d-%d/%d desc(%pad) buf(%pad): %s", + __get_str(devname), __entry->index, __entry->ntu, + __entry->ntc, &__entry->desc_dma, &__entry->buf_dma, + __print_array(__entry->desc, DESC_NR, sizeof(u32)) + ) +); + +#endif /* _HNS3_TRACE_H_ */ + +/* This must be outside ifdef _HNS3_TRACE_H */ +#undef TRACE_INCLUDE_PATH +#define TRACE_INCLUDE_PATH . +#undef TRACE_INCLUDE_FILE +#define TRACE_INCLUDE_FILE hns3_trace +#include <trace/define_trace.h> |