[PATCH v4 3/8] drivers/net/e1000: change xstats to use integer ids
From: Remy Horton <hidden>
Date: 2016-06-13 15:52:39
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
The current extended ethernet statistics fetching involve doing several string operations, which causes performance issues if there are lots of statistics and/or network interfaces. This patch changes the e1000 driver to use the new API that seperates name string and value queries. Signed-off-by: Remy Horton <redacted> --- drivers/net/e1000/igb_ethdev.c | 52 ++++++++++++++++++++++++++++++++++++++---- 1 file changed, 48 insertions(+), 4 deletions(-)
diff --git a/drivers/net/e1000/igb_ethdev.c b/drivers/net/e1000/igb_ethdev.c
index f0921ee..dffa04f 100644
--- a/drivers/net/e1000/igb_ethdev.c
+++ b/drivers/net/e1000/igb_ethdev.c@@ -100,6 +100,9 @@ static void eth_igb_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *rte_stats); static int eth_igb_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstats *xstats, unsigned n); +static int eth_igb_xstats_get_names(struct rte_eth_dev *dev, + struct rte_eth_xstat_name *xstats_names, + unsigned limit); static void eth_igb_stats_reset(struct rte_eth_dev *dev); static void eth_igb_xstats_reset(struct rte_eth_dev *dev); static void eth_igb_infos_get(struct rte_eth_dev *dev,
@@ -165,6 +168,9 @@ static void eth_igbvf_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *rte_stats); static int eth_igbvf_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstats *xstats, unsigned n); +static int eth_igbvf_xstats_get_names(struct rte_eth_dev *dev, + struct rte_eth_xstat_name *xstats_names, + unsigned limit); static void eth_igbvf_stats_reset(struct rte_eth_dev *dev); static int igbvf_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on);
@@ -324,6 +330,7 @@ static const struct eth_dev_ops eth_igb_ops = { .link_update = eth_igb_link_update, .stats_get = eth_igb_stats_get, .xstats_get = eth_igb_xstats_get, + .xstats_get_names = eth_igb_xstats_get_names, .stats_reset = eth_igb_stats_reset, .xstats_reset = eth_igb_xstats_reset, .dev_infos_get = eth_igb_infos_get,
@@ -385,6 +392,7 @@ static const struct eth_dev_ops igbvf_eth_dev_ops = { .link_update = eth_igb_link_update, .stats_get = eth_igbvf_stats_get, .xstats_get = eth_igbvf_xstats_get, + .xstats_get_names = eth_igbvf_xstats_get_names, .stats_reset = eth_igbvf_stats_reset, .xstats_reset = eth_igbvf_stats_reset, .vlan_filter_set = igbvf_vlan_filter_set,
@@ -1691,6 +1699,26 @@ eth_igb_xstats_reset(struct rte_eth_dev *dev) memset(stats, 0, sizeof(*stats)); } +static int eth_igb_xstats_get_names(__rte_unused struct rte_eth_dev *dev, + struct rte_eth_xstat_name *xstats_names, + __rte_unused unsigned limit) +{ + unsigned i; + + if (xstats_names == NULL) + return IGB_NB_XSTATS; + + /* Note: limit checked in rte_eth_xstats_names() */ + + for (i = 0; i < IGB_NB_XSTATS; i++) { + snprintf(xstats_names[i].name, sizeof(xstats_names[i].name), + "%s", rte_igb_stats_strings[i].name); + xstats_names[i].id = i; + } + + return IGB_NB_XSTATS; +} + static int eth_igb_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstats *xstats, unsigned n)
@@ -1713,8 +1741,8 @@ eth_igb_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstats *xstats, /* Extended stats */ for (i = 0; i < IGB_NB_XSTATS; i++) { - snprintf(xstats[i].name, sizeof(xstats[i].name), - "%s", rte_igb_stats_strings[i].name); + xstats[i].name[0] = '\0'; + xstats[i].id = i; xstats[i].value = *(uint64_t *)(((char *)hw_stats) + rte_igb_stats_strings[i].offset); }
@@ -1762,6 +1790,22 @@ igbvf_read_stats_registers(struct e1000_hw *hw, struct e1000_vf_stats *hw_stats) hw_stats->last_gotlbc, hw_stats->gotlbc); } +static int eth_igbvf_xstats_get_names(__rte_unused struct rte_eth_dev *dev, + struct rte_eth_xstat_name *xstats_names, + __rte_unused unsigned limit) +{ + unsigned i; + + if (xstats_names != NULL) + for (i = 0; i < IGBVF_NB_XSTATS; i++) { + snprintf(xstats_names[i].name, + sizeof(xstats_names[i].name), "%s", + rte_igbvf_stats_strings[i].name); + xstats_names[i].id = i; + } + return IGBVF_NB_XSTATS; +} + static int eth_igbvf_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstats *xstats, unsigned n)
@@ -1780,8 +1824,8 @@ eth_igbvf_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstats *xstats, return 0; for (i = 0; i < IGBVF_NB_XSTATS; i++) { - snprintf(xstats[i].name, sizeof(xstats[i].name), "%s", - rte_igbvf_stats_strings[i].name); + xstats[i].name[0] = '\0'; + xstats[i].id = i; xstats[i].value = *(uint64_t *)(((char *)hw_stats) + rte_igbvf_stats_strings[i].offset); }
--
2.5.5