From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jacob Keller Date: Fri, 4 Mar 2016 15:37:47 -0800 Subject: [Intel-wired-lan] [PATCH v6 1/2] fm10k: add helper functions to set strings and data for ethtool stats In-Reply-To: <1457134668-19142-1-git-send-email-jacob.e.keller@intel.com> References: <1457134668-19142-1-git-send-email-jacob.e.keller@intel.com> Message-ID: <1457134668-19142-2-git-send-email-jacob.e.keller@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: intel-wired-lan@osuosl.org List-ID: Reduce duplicate code and the amount of indentation by adding fm10k_add_stat_strings and fm10k_add_ethtool_stats functions which help add fm10k_stat structures to the ethtool stats callbacks. This helps increase ease of use for future stat additions, and increases code readability. Signed-off-by: Jacob Keller --- Notes: - v6 * since this is now part of series, label it v6 * fix fm10k_add_ethtool_stats to properly zero the data * handle the queue stats here as well, instead of in a separate patch This is a direct replacement for 1256b40cb7b4 ("fm10k: add helper functions to set strings and data for ethtool stats", 2016-03-04), and thus the previous version should be dropped from the queue. drivers/net/ethernet/intel/fm10k/fm10k_ethtool.c | 219 ++++++++++++----------- 1 file changed, 115 insertions(+), 104 deletions(-) diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_ethtool.c b/drivers/net/ethernet/intel/fm10k/fm10k_ethtool.c index c23b682ad27e..93f26c8b520c 100644 --- a/drivers/net/ethernet/intel/fm10k/fm10k_ethtool.c +++ b/drivers/net/ethernet/intel/fm10k/fm10k_ethtool.c @@ -121,13 +121,22 @@ static const struct fm10k_stats fm10k_gstrings_mbx_stats[] = { FM10K_MBX_STAT("mbx_rx_mbmem_pushed", rx_mbmem_pushed), }; +#define FM10K_QUEUE_STAT(_name, _stat) { \ + .stat_string = _name, \ + .sizeof_stat = FIELD_SIZEOF(struct fm10k_ring, _stat), \ + .stat_offset = offsetof(struct fm10k_ring, _stat) \ +} + +static const struct fm10k_stats fm10k_gstrings_queue_stats[] = { + FM10K_QUEUE_STAT("packets", stats.packets), + FM10K_QUEUE_STAT("bytes", stats.packets), +}; + #define FM10K_GLOBAL_STATS_LEN ARRAY_SIZE(fm10k_gstrings_global_stats) #define FM10K_DEBUG_STATS_LEN ARRAY_SIZE(fm10k_gstrings_debug_stats) #define FM10K_PF_STATS_LEN ARRAY_SIZE(fm10k_gstrings_pf_stats) #define FM10K_MBX_STATS_LEN ARRAY_SIZE(fm10k_gstrings_mbx_stats) - -#define FM10K_QUEUE_STATS_LEN(_n) \ - ((_n) * 2 * (sizeof(struct fm10k_queue_stats) / sizeof(u64))) +#define FM10K_QUEUE_STATS_LEN ARRAY_SIZE(fm10k_gstrings_queue_stats) #define FM10K_STATIC_STATS_LEN (FM10K_GLOBAL_STATS_LEN + \ FM10K_NETDEV_STATS_LEN + \ @@ -153,69 +162,66 @@ static const char fm10k_prv_flags[FM10K_PRV_FLAG_LEN][ETH_GSTRING_LEN] = { "debug-statistics", }; +static void fm10k_add_stat_strings(char **p, const char *prefix, + const struct fm10k_stats stats[], + const unsigned int size) +{ + unsigned int i; + + for (i = 0; i < size; i++) { + snprintf(*p, ETH_GSTRING_LEN, "%s%s", + prefix, stats[i].stat_string); + *p += ETH_GSTRING_LEN; + } +} + static void fm10k_get_stat_strings(struct net_device *dev, u8 *data) { struct fm10k_intfc *interface = netdev_priv(dev); struct fm10k_iov_data *iov_data = interface->iov_data; char *p = (char *)data; unsigned int i; - unsigned int j; - for (i = 0; i < FM10K_NETDEV_STATS_LEN; i++) { - memcpy(p, fm10k_gstrings_net_stats[i].stat_string, - ETH_GSTRING_LEN); - p += ETH_GSTRING_LEN; - } + fm10k_add_stat_strings(&p, "", fm10k_gstrings_net_stats, + FM10K_NETDEV_STATS_LEN); - for (i = 0; i < FM10K_GLOBAL_STATS_LEN; i++) { - memcpy(p, fm10k_gstrings_global_stats[i].stat_string, - ETH_GSTRING_LEN); - p += ETH_GSTRING_LEN; - } + fm10k_add_stat_strings(&p, "", fm10k_gstrings_global_stats, + FM10K_GLOBAL_STATS_LEN); - if (interface->flags & FM10K_FLAG_DEBUG_STATS) { - for (i = 0; i < FM10K_DEBUG_STATS_LEN; i++) { - memcpy(p, fm10k_gstrings_debug_stats[i].stat_string, - ETH_GSTRING_LEN); - p += ETH_GSTRING_LEN; - } - } + if (interface->flags & FM10K_FLAG_DEBUG_STATS) + fm10k_add_stat_strings(&p, "", fm10k_gstrings_debug_stats, + FM10K_DEBUG_STATS_LEN); - for (i = 0; i < FM10K_MBX_STATS_LEN; i++) { - memcpy(p, fm10k_gstrings_mbx_stats[i].stat_string, - ETH_GSTRING_LEN); - p += ETH_GSTRING_LEN; - } + fm10k_add_stat_strings(&p, "", fm10k_gstrings_mbx_stats, + FM10K_MBX_STATS_LEN); - if (interface->hw.mac.type != fm10k_mac_vf) { - for (i = 0; i < FM10K_PF_STATS_LEN; i++) { - memcpy(p, fm10k_gstrings_pf_stats[i].stat_string, - ETH_GSTRING_LEN); - p += ETH_GSTRING_LEN; - } - } + if (interface->hw.mac.type != fm10k_mac_vf) + fm10k_add_stat_strings(&p, "", fm10k_gstrings_pf_stats, + FM10K_PF_STATS_LEN); if ((interface->flags & FM10K_FLAG_DEBUG_STATS) && iov_data) { for (i = 0; i < iov_data->num_vfs; i++) { - for (j = 0; j < FM10K_MBX_STATS_LEN; j++) { - snprintf(p, - ETH_GSTRING_LEN, - "vf_%u_%s", i, - fm10k_gstrings_mbx_stats[j].stat_string); - p += ETH_GSTRING_LEN; - } + char prefix[ETH_GSTRING_LEN]; + + snprintf(prefix, ETH_GSTRING_LEN, "vf_%u_", i); + fm10k_add_stat_strings(&p, prefix, + fm10k_gstrings_mbx_stats, + FM10K_MBX_STATS_LEN); } } for (i = 0; i < interface->hw.mac.max_queues; i++) { - snprintf(p, ETH_GSTRING_LEN, "tx_queue_%u_packets", i); - p += ETH_GSTRING_LEN; - snprintf(p, ETH_GSTRING_LEN, "tx_queue_%u_bytes", i); - p += ETH_GSTRING_LEN; - snprintf(p, ETH_GSTRING_LEN, "rx_queue_%u_packets", i); - p += ETH_GSTRING_LEN; - snprintf(p, ETH_GSTRING_LEN, "rx_queue_%u_bytes", i); - p += ETH_GSTRING_LEN; + char prefix[ETH_GSTRING_LEN]; + + snprintf(prefix, ETH_GSTRING_LEN, "tx_queue_%u_", i); + fm10k_add_stat_strings(&p, prefix, + fm10k_gstrings_queue_stats, + FM10K_QUEUE_STATS_LEN); + + snprintf(prefix, ETH_GSTRING_LEN, "rx_queue_%u_", i); + fm10k_add_stat_strings(&p, prefix, + fm10k_gstrings_queue_stats, + FM10K_QUEUE_STATS_LEN); } } @@ -250,7 +256,7 @@ static int fm10k_get_sset_count(struct net_device *dev, int sset) case ETH_SS_TEST: return FM10K_TEST_LEN; case ETH_SS_STATS: - stats_len += FM10K_QUEUE_STATS_LEN(hw->mac.max_queues); + stats_len += hw->mac.max_queues * 2 * FM10K_QUEUE_STATS_LEN; if (hw->mac.type != fm10k_mac_vf) stats_len += FM10K_PF_STATS_LEN; @@ -271,55 +277,72 @@ static int fm10k_get_sset_count(struct net_device *dev, int sset) } } +static void fm10k_add_ethtool_stats(u64 **data, void *pointer, + const struct fm10k_stats stats[], + const unsigned int size) +{ + unsigned int i; + char *p; + + if (!pointer) { + /* memory is not zero allocated so we have to clear it */ + for (i = 0; i < size; i++) + *((*data)++) = 0; + return; + } + + for (i = 0; i < size; i++) { + p = (char *)pointer + stats[i].stat_offset; + + switch (stats[i].sizeof_stat) { + case sizeof(u64): + *((*data)++) = *(u64 *)p; + break; + case sizeof(u32): + *((*data)++) = *(u32 *)p; + break; + case sizeof(u16): + *((*data)++) = *(u16 *)p; + break; + case sizeof(u8): + *((*data)++) = *(u8 *)p; + break; + default: + *((*data)++) = 0; + } + } +} + static void fm10k_get_ethtool_stats(struct net_device *netdev, struct ethtool_stats __always_unused *stats, u64 *data) { - const int stat_count = sizeof(struct fm10k_queue_stats) / sizeof(u64); struct fm10k_intfc *interface = netdev_priv(netdev); struct fm10k_iov_data *iov_data = interface->iov_data; struct net_device_stats *net_stats = &netdev->stats; - char *p; - int i, j; + int i; fm10k_update_stats(interface); - for (i = 0; i < FM10K_NETDEV_STATS_LEN; i++) { - p = (char *)net_stats + fm10k_gstrings_net_stats[i].stat_offset; - *(data++) = (fm10k_gstrings_net_stats[i].sizeof_stat == - sizeof(u64)) ? *(u64 *)p : *(u32 *)p; - } + fm10k_add_ethtool_stats(&data, net_stats, fm10k_gstrings_net_stats, + FM10K_NETDEV_STATS_LEN); - for (i = 0; i < FM10K_GLOBAL_STATS_LEN; i++) { - p = (char *)interface + - fm10k_gstrings_global_stats[i].stat_offset; - *(data++) = (fm10k_gstrings_global_stats[i].sizeof_stat == - sizeof(u64)) ? *(u64 *)p : *(u32 *)p; - } + fm10k_add_ethtool_stats(&data, interface, fm10k_gstrings_global_stats, + FM10K_GLOBAL_STATS_LEN); - if (interface->flags & FM10K_FLAG_DEBUG_STATS) { - for (i = 0; i < FM10K_DEBUG_STATS_LEN; i++) { - p = (char *)interface + - fm10k_gstrings_debug_stats[i].stat_offset; - *(data++) = (fm10k_gstrings_debug_stats[i].sizeof_stat == - sizeof(u64)) ? *(u64 *)p : *(u32 *)p; - } - } + if (interface->flags & FM10K_FLAG_DEBUG_STATS) + fm10k_add_ethtool_stats(&data, interface, + fm10k_gstrings_debug_stats, + FM10K_DEBUG_STATS_LEN); - for (i = 0; i < FM10K_MBX_STATS_LEN; i++) { - p = (char *)&interface->hw.mbx + - fm10k_gstrings_mbx_stats[i].stat_offset; - *(data++) = (fm10k_gstrings_mbx_stats[i].sizeof_stat == - sizeof(u64)) ? *(u64 *)p : *(u32 *)p; - } + fm10k_add_ethtool_stats(&data, &interface->hw.mbx, + fm10k_gstrings_mbx_stats, + FM10K_MBX_STATS_LEN); if (interface->hw.mac.type != fm10k_mac_vf) { - for (i = 0; i < FM10K_PF_STATS_LEN; i++) { - p = (char *)interface + - fm10k_gstrings_pf_stats[i].stat_offset; - *(data++) = (fm10k_gstrings_pf_stats[i].sizeof_stat == - sizeof(u64)) ? *(u64 *)p : *(u32 *)p; - } + fm10k_add_ethtool_stats(&data, interface, + fm10k_gstrings_pf_stats, + FM10K_PF_STATS_LEN); } if ((interface->flags & FM10K_FLAG_DEBUG_STATS) && iov_data) { @@ -328,36 +351,24 @@ static void fm10k_get_ethtool_stats(struct net_device *netdev, vf_info = &iov_data->vf_info[i]; - /* skip stats if we don't have a vf info */ - if (!vf_info) { - data += FM10K_MBX_STATS_LEN; - continue; - } - - for (j = 0; j < FM10K_MBX_STATS_LEN; j++) { - p = (char *)&vf_info->mbx + - fm10k_gstrings_mbx_stats[j].stat_offset; - *(data++) = (fm10k_gstrings_mbx_stats[j].sizeof_stat == - sizeof(u64)) ? *(u64 *)p : *(u32 *)p; - } + fm10k_add_ethtool_stats(&data, &vf_info->mbx, + fm10k_gstrings_mbx_stats, + FM10K_MBX_STATS_LEN); } } for (i = 0; i < interface->hw.mac.max_queues; i++) { struct fm10k_ring *ring; - u64 *queue_stat; ring = interface->tx_ring[i]; - if (ring) - queue_stat = (u64 *)&ring->stats; - for (j = 0; j < stat_count; j++) - *(data++) = ring ? queue_stat[j] : 0; + fm10k_add_ethtool_stats(&data, ring, + fm10k_gstrings_queue_stats, + FM10K_QUEUE_STATS_LEN); ring = interface->rx_ring[i]; - if (ring) - queue_stat = (u64 *)&ring->stats; - for (j = 0; j < stat_count; j++) - *(data++) = ring ? queue_stat[j] : 0; + fm10k_add_ethtool_stats(&data, ring, + fm10k_gstrings_queue_stats, + FM10K_QUEUE_STATS_LEN); } } -- 2.7.1.429.g45cd78e