diff options
Diffstat (limited to 'drivers/net/ethernet/intel/iavf/iavf_ethtool.c')
| -rw-r--r-- | drivers/net/ethernet/intel/iavf/iavf_ethtool.c | 2012 |
1 files changed, 2012 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/iavf/iavf_ethtool.c b/drivers/net/ethernet/intel/iavf/iavf_ethtool.c new file mode 100644 index 000000000..892c6a4f0 --- /dev/null +++ b/drivers/net/ethernet/intel/iavf/iavf_ethtool.c @@ -0,0 +1,2012 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 2013 - 2018 Intel Corporation. */ + +/* ethtool support for iavf */ +#include "iavf.h" + +#include <linux/uaccess.h> + +/* ethtool statistics helpers */ + +/** + * struct iavf_stats - definition for an ethtool statistic + * @stat_string: statistic name to display in ethtool -S output + * @sizeof_stat: the sizeof() the stat, must be no greater than sizeof(u64) + * @stat_offset: offsetof() the stat from a base pointer + * + * This structure defines a statistic to be added to the ethtool stats buffer. + * It defines a statistic as offset from a common base pointer. Stats should + * be defined in constant arrays using the IAVF_STAT macro, with every element + * of the array using the same _type for calculating the sizeof_stat and + * stat_offset. + * + * The @sizeof_stat is expected to be sizeof(u8), sizeof(u16), sizeof(u32) or + * sizeof(u64). Other sizes are not expected and will produce a WARN_ONCE from + * the iavf_add_ethtool_stat() helper function. + * + * The @stat_string is interpreted as a format string, allowing formatted + * values to be inserted while looping over multiple structures for a given + * statistics array. Thus, every statistic string in an array should have the + * same type and number of format specifiers, to be formatted by variadic + * arguments to the iavf_add_stat_string() helper function. + **/ +struct iavf_stats { + char stat_string[ETH_GSTRING_LEN]; + int sizeof_stat; + int stat_offset; +}; + +/* Helper macro to define an iavf_stat structure with proper size and type. + * Use this when defining constant statistics arrays. Note that @_type expects + * only a type name and is used multiple times. + */ +#define IAVF_STAT(_type, _name, _stat) { \ + .stat_string = _name, \ + .sizeof_stat = sizeof_field(_type, _stat), \ + .stat_offset = offsetof(_type, _stat) \ +} + +/* Helper macro for defining some statistics related to queues */ +#define IAVF_QUEUE_STAT(_name, _stat) \ + IAVF_STAT(struct iavf_ring, _name, _stat) + +/* Stats associated with a Tx or Rx ring */ +static const struct iavf_stats iavf_gstrings_queue_stats[] = { + IAVF_QUEUE_STAT("%s-%u.packets", stats.packets), + IAVF_QUEUE_STAT("%s-%u.bytes", stats.bytes), +}; + +/** + * iavf_add_one_ethtool_stat - copy the stat into the supplied buffer + * @data: location to store the stat value + * @pointer: basis for where to copy from + * @stat: the stat definition + * + * Copies the stat data defined by the pointer and stat structure pair into + * the memory supplied as data. Used to implement iavf_add_ethtool_stats and + * iavf_add_queue_stats. If the pointer is null, data will be zero'd. + */ +static void +iavf_add_one_ethtool_stat(u64 *data, void *pointer, + const struct iavf_stats *stat) +{ + char *p; + + if (!pointer) { + /* ensure that the ethtool data buffer is zero'd for any stats + * which don't have a valid pointer. + */ + *data = 0; + return; + } + + p = (char *)pointer + stat->stat_offset; + switch (stat->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: + WARN_ONCE(1, "unexpected stat size for %s", + stat->stat_string); + *data = 0; + } +} + +/** + * __iavf_add_ethtool_stats - copy stats into the ethtool supplied buffer + * @data: ethtool stats buffer + * @pointer: location to copy stats from + * @stats: array of stats to copy + * @size: the size of the stats definition + * + * Copy the stats defined by the stats array using the pointer as a base into + * the data buffer supplied by ethtool. Updates the data pointer to point to + * the next empty location for successive calls to __iavf_add_ethtool_stats. + * If pointer is null, set the data values to zero and update the pointer to + * skip these stats. + **/ +static void +__iavf_add_ethtool_stats(u64 **data, void *pointer, + const struct iavf_stats stats[], + const unsigned int size) +{ + unsigned int i; + + for (i = 0; i < size; i++) + iavf_add_one_ethtool_stat((*data)++, pointer, &stats[i]); +} + +/** + * iavf_add_ethtool_stats - copy stats into ethtool supplied buffer + * @data: ethtool stats buffer + * @pointer: location where stats are stored + * @stats: static const array of stat definitions + * + * Macro to ease the use of __iavf_add_ethtool_stats by taking a static + * constant stats array and passing the ARRAY_SIZE(). This avoids typos by + * ensuring that we pass the size associated with the given stats array. + * + * The parameter @stats is evaluated twice, so parameters with side effects + * should be avoided. + **/ +#define iavf_add_ethtool_stats(data, pointer, stats) \ + __iavf_add_ethtool_stats(data, pointer, stats, ARRAY_SIZE(stats)) + +/** + * iavf_add_queue_stats - copy queue statistics into supplied buffer + * @data: ethtool stats buffer + * @ring: the ring to copy + * + * Queue statistics must be copied while protected by + * u64_stats_fetch_begin, so we can't directly use iavf_add_ethtool_stats. + * Assumes that queue stats are defined in iavf_gstrings_queue_stats. If the + * ring pointer is null, zero out the queue stat values and update the data + * pointer. Otherwise safely copy the stats from the ring into the supplied + * buffer and update the data pointer when finished. + * + * This function expects to be called while under rcu_read_lock(). + **/ +static void +iavf_add_queue_stats(u64 **data, struct iavf_ring *ring) +{ + const unsigned int size = ARRAY_SIZE(iavf_gstrings_queue_stats); + const struct iavf_stats *stats = iavf_gstrings_queue_stats; + unsigned int start; + unsigned int i; + + /* To avoid invalid statistics values, ensure that we keep retrying + * the copy until we get a consistent value according to + * u64_stats_fetch_retry. But first, make sure our ring is + * non-null before attempting to access its syncp. + */ + do { + start = !ring ? 0 : u64_stats_fetch_begin(&ring->syncp); + for (i = 0; i < size; i++) + iavf_add_one_ethtool_stat(&(*data)[i], ring, &stats[i]); + } while (ring && u64_stats_fetch_retry(&ring->syncp, start)); + + /* Once we successfully copy the stats in, update the data pointer */ + *data += size; +} + +/** + * __iavf_add_stat_strings - copy stat strings into ethtool buffer + * @p: ethtool supplied buffer + * @stats: stat definitions array + * @size: size of the stats array + * + * Format and copy the strings described by stats into the buffer pointed at + * by p. + **/ +static void __iavf_add_stat_strings(u8 **p, const struct iavf_stats stats[], + const unsigned int size, ...) +{ + unsigned int i; + + for (i = 0; i < size; i++) { + va_list args; + + va_start(args, size); + vsnprintf(*p, ETH_GSTRING_LEN, stats[i].stat_string, args); + *p += ETH_GSTRING_LEN; + va_end(args); + } +} + +/** + * iavf_add_stat_strings - copy stat strings into ethtool buffer + * @p: ethtool supplied buffer + * @stats: stat definitions array + * + * Format and copy the strings described by the const static stats value into + * the buffer pointed at by p. + * + * The parameter @stats is evaluated twice, so parameters with side effects + * should be avoided. Additionally, stats must be an array such that + * ARRAY_SIZE can be called on it. + **/ +#define iavf_add_stat_strings(p, stats, ...) \ + __iavf_add_stat_strings(p, stats, ARRAY_SIZE(stats), ## __VA_ARGS__) + +#define VF_STAT(_name, _stat) \ + IAVF_STAT(struct iavf_adapter, _name, _stat) + +static const struct iavf_stats iavf_gstrings_stats[] = { + VF_STAT("rx_bytes", current_stats.rx_bytes), + VF_STAT("rx_unicast", current_stats.rx_unicast), + VF_STAT("rx_multicast", current_stats.rx_multicast), + VF_STAT("rx_broadcast", current_stats.rx_broadcast), + VF_STAT("rx_discards", current_stats.rx_discards), + VF_STAT("rx_unknown_protocol", current_stats.rx_unknown_protocol), + VF_STAT("tx_bytes", current_stats.tx_bytes), + VF_STAT("tx_unicast", current_stats.tx_unicast), + VF_STAT("tx_multicast", current_stats.tx_multicast), + VF_STAT("tx_broadcast", current_stats.tx_broadcast), + VF_STAT("tx_discards", current_stats.tx_discards), + VF_STAT("tx_errors", current_stats.tx_errors), +}; + +#define IAVF_STATS_LEN ARRAY_SIZE(iavf_gstrings_stats) + +#define IAVF_QUEUE_STATS_LEN ARRAY_SIZE(iavf_gstrings_queue_stats) + +/* For now we have one and only one private flag and it is only defined + * when we have support for the SKIP_CPU_SYNC DMA attribute. Instead + * of leaving all this code sitting around empty we will strip it unless + * our one private flag is actually available. + */ +struct iavf_priv_flags { + char flag_string[ETH_GSTRING_LEN]; + u32 flag; + bool read_only; +}; + +#define IAVF_PRIV_FLAG(_name, _flag, _read_only) { \ + .flag_string = _name, \ + .flag = _flag, \ + .read_only = _read_only, \ +} + +static const struct iavf_priv_flags iavf_gstrings_priv_flags[] = { + IAVF_PRIV_FLAG("legacy-rx", IAVF_FLAG_LEGACY_RX, 0), +}; + +#define IAVF_PRIV_FLAGS_STR_LEN ARRAY_SIZE(iavf_gstrings_priv_flags) + +/** + * iavf_get_link_ksettings - Get Link Speed and Duplex settings + * @netdev: network interface device structure + * @cmd: ethtool command + * + * Reports speed/duplex settings. Because this is a VF, we don't know what + * kind of link we really have, so we fake it. + **/ +static int iavf_get_link_ksettings(struct net_device *netdev, + struct ethtool_link_ksettings *cmd) +{ + struct iavf_adapter *adapter = netdev_priv(netdev); + + ethtool_link_ksettings_zero_link_mode(cmd, supported); + cmd->base.autoneg = AUTONEG_DISABLE; + cmd->base.port = PORT_NONE; + cmd->base.duplex = DUPLEX_FULL; + + if (ADV_LINK_SUPPORT(adapter)) { + if (adapter->link_speed_mbps && + adapter->link_speed_mbps < U32_MAX) + cmd->base.speed = adapter->link_speed_mbps; + else + cmd->base.speed = SPEED_UNKNOWN; + + return 0; + } + + switch (adapter->link_speed) { + case VIRTCHNL_LINK_SPEED_40GB: + cmd->base.speed = SPEED_40000; + break; + case VIRTCHNL_LINK_SPEED_25GB: + cmd->base.speed = SPEED_25000; + break; + case VIRTCHNL_LINK_SPEED_20GB: + cmd->base.speed = SPEED_20000; + break; + case VIRTCHNL_LINK_SPEED_10GB: + cmd->base.speed = SPEED_10000; + break; + case VIRTCHNL_LINK_SPEED_5GB: + cmd->base.speed = SPEED_5000; + break; + case VIRTCHNL_LINK_SPEED_2_5GB: + cmd->base.speed = SPEED_2500; + break; + case VIRTCHNL_LINK_SPEED_1GB: + cmd->base.speed = SPEED_1000; + break; + case VIRTCHNL_LINK_SPEED_100MB: + cmd->base.speed = SPEED_100; + break; + default: + break; + } + + return 0; +} + +/** + * iavf_get_sset_count - Get length of string set + * @netdev: network interface device structure + * @sset: id of string set + * + * Reports size of various string tables. + **/ +static int iavf_get_sset_count(struct net_device *netdev, int sset) +{ + /* Report the maximum number queues, even if not every queue is + * currently configured. Since allocation of queues is in pairs, + * use netdev->real_num_tx_queues * 2. The real_num_tx_queues is set + * at device creation and never changes. + */ + + if (sset == ETH_SS_STATS) + return IAVF_STATS_LEN + + (IAVF_QUEUE_STATS_LEN * 2 * + netdev->real_num_tx_queues); + else if (sset == ETH_SS_PRIV_FLAGS) + return IAVF_PRIV_FLAGS_STR_LEN; + else + return -EINVAL; +} + +/** + * iavf_get_ethtool_stats - report device statistics + * @netdev: network interface device structure + * @stats: ethtool statistics structure + * @data: pointer to data buffer + * + * All statistics are added to the data buffer as an array of u64. + **/ +static void iavf_get_ethtool_stats(struct net_device *netdev, + struct ethtool_stats *stats, u64 *data) +{ + struct iavf_adapter *adapter = netdev_priv(netdev); + unsigned int i; + + /* Explicitly request stats refresh */ + iavf_schedule_aq_request(adapter, IAVF_FLAG_AQ_REQUEST_STATS); + + iavf_add_ethtool_stats(&data, adapter, iavf_gstrings_stats); + + rcu_read_lock(); + /* As num_active_queues describe both tx and rx queues, we can use + * it to iterate over rings' stats. + */ + for (i = 0; i < adapter->num_active_queues; i++) { + struct iavf_ring *ring; + + /* Tx rings stats */ + ring = &adapter->tx_rings[i]; + iavf_add_queue_stats(&data, ring); + + /* Rx rings stats */ + ring = &adapter->rx_rings[i]; + iavf_add_queue_stats(&data, ring); + } + rcu_read_unlock(); +} + +/** + * iavf_get_priv_flag_strings - Get private flag strings + * @netdev: network interface device structure + * @data: buffer for string data + * + * Builds the private flags string table + **/ +static void iavf_get_priv_flag_strings(struct net_device *netdev, u8 *data) +{ + unsigned int i; + + for (i = 0; i < IAVF_PRIV_FLAGS_STR_LEN; i++) { + snprintf(data, ETH_GSTRING_LEN, "%s", + iavf_gstrings_priv_flags[i].flag_string); + data += ETH_GSTRING_LEN; + } +} + +/** + * iavf_get_stat_strings - Get stat strings + * @netdev: network interface device structure + * @data: buffer for string data + * + * Builds the statistics string table + **/ +static void iavf_get_stat_strings(struct net_device *netdev, u8 *data) +{ + unsigned int i; + + iavf_add_stat_strings(&data, iavf_gstrings_stats); + + /* Queues are always allocated in pairs, so we just use + * real_num_tx_queues for both Tx and Rx queues. + */ + for (i = 0; i < netdev->real_num_tx_queues; i++) { + iavf_add_stat_strings(&data, iavf_gstrings_queue_stats, + "tx", i); + iavf_add_stat_strings(&data, iavf_gstrings_queue_stats, + "rx", i); + } +} + +/** + * iavf_get_strings - Get string set + * @netdev: network interface device structure + * @sset: id of string set + * @data: buffer for string data + * + * Builds string tables for various string sets + **/ +static void iavf_get_strings(struct net_device *netdev, u32 sset, u8 *data) +{ + switch (sset) { + case ETH_SS_STATS: + iavf_get_stat_strings(netdev, data); + break; + case ETH_SS_PRIV_FLAGS: + iavf_get_priv_flag_strings(netdev, data); + break; + default: + break; + } +} + +/** + * iavf_get_priv_flags - report device private flags + * @netdev: network interface device structure + * + * The get string set count and the string set should be matched for each + * flag returned. Add new strings for each flag to the iavf_gstrings_priv_flags + * array. + * + * Returns a u32 bitmap of flags. + **/ +static u32 iavf_get_priv_flags(struct net_device *netdev) +{ + struct iavf_adapter *adapter = netdev_priv(netdev); + u32 i, ret_flags = 0; + + for (i = 0; i < IAVF_PRIV_FLAGS_STR_LEN; i++) { + const struct iavf_priv_flags *priv_flags; + + priv_flags = &iavf_gstrings_priv_flags[i]; + + if (priv_flags->flag & adapter->flags) + ret_flags |= BIT(i); + } + + return ret_flags; +} + +/** + * iavf_set_priv_flags - set private flags + * @netdev: network interface device structure + * @flags: bit flags to be set + **/ +static int iavf_set_priv_flags(struct net_device *netdev, u32 flags) +{ + struct iavf_adapter *adapter = netdev_priv(netdev); + u32 orig_flags, new_flags, changed_flags; + int ret = 0; + u32 i; + + orig_flags = READ_ONCE(adapter->flags); + new_flags = orig_flags; + + for (i = 0; i < IAVF_PRIV_FLAGS_STR_LEN; i++) { + const struct iavf_priv_flags *priv_flags; + + priv_flags = &iavf_gstrings_priv_flags[i]; + + if (flags & BIT(i)) + new_flags |= priv_flags->flag; + else + new_flags &= ~(priv_flags->flag); + + if (priv_flags->read_only && + ((orig_flags ^ new_flags) & ~BIT(i))) + return -EOPNOTSUPP; + } + + /* Before we finalize any flag changes, any checks which we need to + * perform to determine if the new flags will be supported should go + * here... + */ + + /* Compare and exchange the new flags into place. If we failed, that + * is if cmpxchg returns anything but the old value, this means + * something else must have modified the flags variable since we + * copied it. We'll just punt with an error and log something in the + * message buffer. + */ + if (cmpxchg(&adapter->flags, orig_flags, new_flags) != orig_flags) { + dev_warn(&adapter->pdev->dev, + "Unable to update adapter->flags as it was modified by another thread...\n"); + return -EAGAIN; + } + + changed_flags = orig_flags ^ new_flags; + + /* Process any additional changes needed as a result of flag changes. + * The changed_flags value reflects the list of bits that were changed + * in the code above. + */ + + /* issue a reset to force legacy-rx change to take effect */ + if (changed_flags & IAVF_FLAG_LEGACY_RX) { + if (netif_running(netdev)) { + iavf_schedule_reset(adapter, IAVF_FLAG_RESET_NEEDED); + ret = iavf_wait_for_reset(adapter); + if (ret) + netdev_warn(netdev, "Changing private flags timeout or interrupted waiting for reset"); + } + } + + return ret; +} + +/** + * iavf_get_msglevel - Get debug message level + * @netdev: network interface device structure + * + * Returns current debug message level. + **/ +static u32 iavf_get_msglevel(struct net_device *netdev) +{ + struct iavf_adapter *adapter = netdev_priv(netdev); + + return adapter->msg_enable; +} + +/** + * iavf_set_msglevel - Set debug message level + * @netdev: network interface device structure + * @data: message level + * + * Set current debug message level. Higher values cause the driver to + * be noisier. + **/ +static void iavf_set_msglevel(struct net_device *netdev, u32 data) +{ + struct iavf_adapter *adapter = netdev_priv(netdev); + + if (IAVF_DEBUG_USER & data) + adapter->hw.debug_mask = data; + adapter->msg_enable = data; +} + +/** + * iavf_get_drvinfo - Get driver info + * @netdev: network interface device structure + * @drvinfo: ethool driver info structure + * + * Returns information about the driver and device for display to the user. + **/ +static void iavf_get_drvinfo(struct net_device *netdev, + struct ethtool_drvinfo *drvinfo) +{ + struct iavf_adapter *adapter = netdev_priv(netdev); + + strscpy(drvinfo->driver, iavf_driver_name, 32); + strscpy(drvinfo->fw_version, "N/A", 4); + strscpy(drvinfo->bus_info, pci_name(adapter->pdev), 32); + drvinfo->n_priv_flags = IAVF_PRIV_FLAGS_STR_LEN; +} + +/** + * iavf_get_ringparam - Get ring parameters + * @netdev: network interface device structure + * @ring: ethtool ringparam structure + * @kernel_ring: ethtool extenal ringparam structure + * @extack: netlink extended ACK report struct + * + * Returns current ring parameters. TX and RX rings are reported separately, + * but the number of rings is not reported. + **/ +static void iavf_get_ringparam(struct net_device *netdev, + struct ethtool_ringparam *ring, + struct kernel_ethtool_ringparam *kernel_ring, + struct netlink_ext_ack *extack) +{ + struct iavf_adapter *adapter = netdev_priv(netdev); + + ring->rx_max_pending = IAVF_MAX_RXD; + ring->tx_max_pending = IAVF_MAX_TXD; + ring->rx_pending = adapter->rx_desc_count; + ring->tx_pending = adapter->tx_desc_count; +} + +/** + * iavf_set_ringparam - Set ring parameters + * @netdev: network interface device structure + * @ring: ethtool ringparam structure + * @kernel_ring: ethtool external ringparam structure + * @extack: netlink extended ACK report struct + * + * Sets ring parameters. TX and RX rings are controlled separately, but the + * number of rings is not specified, so all rings get the same settings. + **/ +static int iavf_set_ringparam(struct net_device *netdev, + struct ethtool_ringparam *ring, + struct kernel_ethtool_ringparam *kernel_ring, + struct netlink_ext_ack *extack) +{ + struct iavf_adapter *adapter = netdev_priv(netdev); + u32 new_rx_count, new_tx_count; + int ret = 0; + + if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending)) + return -EINVAL; + + if (ring->tx_pending > IAVF_MAX_TXD || + ring->tx_pending < IAVF_MIN_TXD || + ring->rx_pending > IAVF_MAX_RXD || + ring->rx_pending < IAVF_MIN_RXD) { + netdev_err(netdev, "Descriptors requested (Tx: %d / Rx: %d) out of range [%d-%d] (increment %d)\n", + ring->tx_pending, ring->rx_pending, IAVF_MIN_TXD, + IAVF_MAX_RXD, IAVF_REQ_DESCRIPTOR_MULTIPLE); + return -EINVAL; + } + + new_tx_count = ALIGN(ring->tx_pending, IAVF_REQ_DESCRIPTOR_MULTIPLE); + if (new_tx_count != ring->tx_pending) + netdev_info(netdev, "Requested Tx descriptor count rounded up to %d\n", + new_tx_count); + + new_rx_count = ALIGN(ring->rx_pending, IAVF_REQ_DESCRIPTOR_MULTIPLE); + if (new_rx_count != ring->rx_pending) + netdev_info(netdev, "Requested Rx descriptor count rounded up to %d\n", + new_rx_count); + + /* if nothing to do return success */ + if ((new_tx_count == adapter->tx_desc_count) && + (new_rx_count == adapter->rx_desc_count)) { + netdev_dbg(netdev, "Nothing to change, descriptor count is same as requested\n"); + return 0; + } + + if (new_tx_count != adapter->tx_desc_count) { + netdev_dbg(netdev, "Changing Tx descriptor count from %d to %d\n", + adapter->tx_desc_count, new_tx_count); + adapter->tx_desc_count = new_tx_count; + } + + if (new_rx_count != adapter->rx_desc_count) { + netdev_dbg(netdev, "Changing Rx descriptor count from %d to %d\n", + adapter->rx_desc_count, new_rx_count); + adapter->rx_desc_count = new_rx_count; + } + + if (netif_running(netdev)) { + iavf_schedule_reset(adapter, IAVF_FLAG_RESET_NEEDED); + ret = iavf_wait_for_reset(adapter); + if (ret) + netdev_warn(netdev, "Changing ring parameters timeout or interrupted waiting for reset"); + } + + return ret; +} + +/** + * __iavf_get_coalesce - get per-queue coalesce settings + * @netdev: the netdev to check + * @ec: ethtool coalesce data structure + * @queue: which queue to pick + * + * Gets the per-queue settings for coalescence. Specifically Rx and Tx usecs + * are per queue. If queue is <0 then we default to queue 0 as the + * representative value. + **/ +static int __iavf_get_coalesce(struct net_device *netdev, + struct ethtool_coalesce *ec, int queue) +{ + struct iavf_adapter *adapter = netdev_priv(netdev); + struct iavf_ring *rx_ring, *tx_ring; + + /* Rx and Tx usecs per queue value. If user doesn't specify the + * queue, return queue 0's value to represent. + */ + if (queue < 0) + queue = 0; + else if (queue >= adapter->num_active_queues) + return -EINVAL; + + rx_ring = &adapter->rx_rings[queue]; + tx_ring = &adapter->tx_rings[queue]; + + if (ITR_IS_DYNAMIC(rx_ring->itr_setting)) + ec->use_adaptive_rx_coalesce = 1; + + if (ITR_IS_DYNAMIC(tx_ring->itr_setting)) + ec->use_adaptive_tx_coalesce = 1; + + ec->rx_coalesce_usecs = rx_ring->itr_setting & ~IAVF_ITR_DYNAMIC; + ec->tx_coalesce_usecs = tx_ring->itr_setting & ~IAVF_ITR_DYNAMIC; + + return 0; +} + +/** + * iavf_get_coalesce - Get interrupt coalescing settings + * @netdev: network interface device structure + * @ec: ethtool coalesce structure + * @kernel_coal: ethtool CQE mode setting structure + * @extack: extack for reporting error messages + * + * Returns current coalescing settings. This is referred to elsewhere in the + * driver as Interrupt Throttle Rate, as this is how the hardware describes + * this functionality. Note that if per-queue settings have been modified this + * only represents the settings of queue 0. + **/ +static int iavf_get_coalesce(struct net_device *netdev, + struct ethtool_coalesce *ec, + struct kernel_ethtool_coalesce *kernel_coal, + struct netlink_ext_ack *extack) +{ + return __iavf_get_coalesce(netdev, ec, -1); +} + +/** + * iavf_get_per_queue_coalesce - get coalesce values for specific queue + * @netdev: netdev to read + * @ec: coalesce settings from ethtool + * @queue: the queue to read + * + * Read specific queue's coalesce settings. + **/ +static int iavf_get_per_queue_coalesce(struct net_device *netdev, u32 queue, + struct ethtool_coalesce *ec) +{ + return __iavf_get_coalesce(netdev, ec, queue); +} + +/** + * iavf_set_itr_per_queue - set ITR values for specific queue + * @adapter: the VF adapter struct to set values for + * @ec: coalesce settings from ethtool + * @queue: the queue to modify + * + * Change the ITR settings for a specific queue. + **/ +static int iavf_set_itr_per_queue(struct iavf_adapter *adapter, + struct ethtool_coalesce *ec, int queue) +{ + struct iavf_ring *rx_ring = &adapter->rx_rings[queue]; + struct iavf_ring *tx_ring = &adapter->tx_rings[queue]; + struct iavf_q_vector *q_vector; + u16 itr_setting; + + itr_setting = rx_ring->itr_setting & ~IAVF_ITR_DYNAMIC; + + if (ec->rx_coalesce_usecs != itr_setting && + ec->use_adaptive_rx_coalesce) { + netif_info(adapter, drv, adapter->netdev, + "Rx interrupt throttling cannot be changed if adaptive-rx is enabled\n"); + return -EINVAL; + } + + itr_setting = tx_ring->itr_setting & ~IAVF_ITR_DYNAMIC; + + if (ec->tx_coalesce_usecs != itr_setting && + ec->use_adaptive_tx_coalesce) { + netif_info(adapter, drv, adapter->netdev, + "Tx interrupt throttling cannot be changed if adaptive-tx is enabled\n"); + return -EINVAL; + } + + rx_ring->itr_setting = ITR_REG_ALIGN(ec->rx_coalesce_usecs); + tx_ring->itr_setting = ITR_REG_ALIGN(ec->tx_coalesce_usecs); + + rx_ring->itr_setting |= IAVF_ITR_DYNAMIC; + if (!ec->use_adaptive_rx_coalesce) + rx_ring->itr_setting ^= IAVF_ITR_DYNAMIC; + + tx_ring->itr_setting |= IAVF_ITR_DYNAMIC; + if (!ec->use_adaptive_tx_coalesce) + tx_ring->itr_setting ^= IAVF_ITR_DYNAMIC; + + q_vector = rx_ring->q_vector; + q_vector->rx.target_itr = ITR_TO_REG(rx_ring->itr_setting); + + q_vector = tx_ring->q_vector; + q_vector->tx.target_itr = ITR_TO_REG(tx_ring->itr_setting); + + /* The interrupt handler itself will take care of programming + * the Tx and Rx ITR values based on the values we have entered + * into the q_vector, no need to write the values now. + */ + return 0; +} + +/** + * __iavf_set_coalesce - set coalesce settings for particular queue + * @netdev: the netdev to change + * @ec: ethtool coalesce settings + * @queue: the queue to change + * + * Sets the coalesce settings for a particular queue. + **/ +static int __iavf_set_coalesce(struct net_device *netdev, + struct ethtool_coalesce *ec, int queue) +{ + struct iavf_adapter *adapter = netdev_priv(netdev); + int i; + + if (ec->rx_coalesce_usecs > IAVF_MAX_ITR) { + netif_info(adapter, drv, netdev, "Invalid value, rx-usecs range is 0-8160\n"); + return -EINVAL; + } else if (ec->tx_coalesce_usecs > IAVF_MAX_ITR) { + netif_info(adapter, drv, netdev, "Invalid value, tx-usecs range is 0-8160\n"); + return -EINVAL; + } + + /* Rx and Tx usecs has per queue value. If user doesn't specify the + * queue, apply to all queues. + */ + if (queue < 0) { + for (i = 0; i < adapter->num_active_queues; i++) + if (iavf_set_itr_per_queue(adapter, ec, i)) + return -EINVAL; + } else if (queue < adapter->num_active_queues) { + if (iavf_set_itr_per_queue(adapter, ec, queue)) + return -EINVAL; + } else { + netif_info(adapter, drv, netdev, "Invalid queue value, queue range is 0 - %d\n", + adapter->num_active_queues - 1); + return -EINVAL; + } + + return 0; +} + +/** + * iavf_set_coalesce - Set interrupt coalescing settings + * @netdev: network interface device structure + * @ec: ethtool coalesce structure + * @kernel_coal: ethtool CQE mode setting structure + * @extack: extack for reporting error messages + * + * Change current coalescing settings for every queue. + **/ +static int iavf_set_coalesce(struct net_device *netdev, + struct ethtool_coalesce *ec, + struct kernel_ethtool_coalesce *kernel_coal, + struct netlink_ext_ack *extack) +{ + return __iavf_set_coalesce(netdev, ec, -1); +} + +/** + * iavf_set_per_queue_coalesce - set specific queue's coalesce settings + * @netdev: the netdev to change + * @ec: ethtool's coalesce settings + * @queue: the queue to modify + * + * Modifies a specific queue's coalesce settings. + */ +static int iavf_set_per_queue_coalesce(struct net_device *netdev, u32 queue, + struct ethtool_coalesce *ec) +{ + return __iavf_set_coalesce(netdev, ec, queue); +} + +/** + * iavf_fltr_to_ethtool_flow - convert filter type values to ethtool + * flow type values + * @flow: filter type to be converted + * + * Returns the corresponding ethtool flow type. + */ +static int iavf_fltr_to_ethtool_flow(enum iavf_fdir_flow_type flow) +{ + switch (flow) { + case IAVF_FDIR_FLOW_IPV4_TCP: + return TCP_V4_FLOW; + case IAVF_FDIR_FLOW_IPV4_UDP: + return UDP_V4_FLOW; + case IAVF_FDIR_FLOW_IPV4_SCTP: + return SCTP_V4_FLOW; + case IAVF_FDIR_FLOW_IPV4_AH: + return AH_V4_FLOW; + case IAVF_FDIR_FLOW_IPV4_ESP: + return ESP_V4_FLOW; + case IAVF_FDIR_FLOW_IPV4_OTHER: + return IPV4_USER_FLOW; + case IAVF_FDIR_FLOW_IPV6_TCP: + return TCP_V6_FLOW; + case IAVF_FDIR_FLOW_IPV6_UDP: + return UDP_V6_FLOW; + case IAVF_FDIR_FLOW_IPV6_SCTP: + return SCTP_V6_FLOW; + case IAVF_FDIR_FLOW_IPV6_AH: + return AH_V6_FLOW; + case IAVF_FDIR_FLOW_IPV6_ESP: + return ESP_V6_FLOW; + case IAVF_FDIR_FLOW_IPV6_OTHER: + return IPV6_USER_FLOW; + case IAVF_FDIR_FLOW_NON_IP_L2: + return ETHER_FLOW; + default: + /* 0 is undefined ethtool flow */ + return 0; + } +} + +/** + * iavf_ethtool_flow_to_fltr - convert ethtool flow type to filter enum + * @eth: Ethtool flow type to be converted + * + * Returns flow enum + */ +static enum iavf_fdir_flow_type iavf_ethtool_flow_to_fltr(int eth) +{ + switch (eth) { + case TCP_V4_FLOW: + return IAVF_FDIR_FLOW_IPV4_TCP; + case UDP_V4_FLOW: + return IAVF_FDIR_FLOW_IPV4_UDP; + case SCTP_V4_FLOW: + return IAVF_FDIR_FLOW_IPV4_SCTP; + case AH_V4_FLOW: + return IAVF_FDIR_FLOW_IPV4_AH; + case ESP_V4_FLOW: + return IAVF_FDIR_FLOW_IPV4_ESP; + case IPV4_USER_FLOW: + return IAVF_FDIR_FLOW_IPV4_OTHER; + case TCP_V6_FLOW: + return IAVF_FDIR_FLOW_IPV6_TCP; + case UDP_V6_FLOW: + return IAVF_FDIR_FLOW_IPV6_UDP; + case SCTP_V6_FLOW: + return IAVF_FDIR_FLOW_IPV6_SCTP; + case AH_V6_FLOW: + return IAVF_FDIR_FLOW_IPV6_AH; + case ESP_V6_FLOW: + return IAVF_FDIR_FLOW_IPV6_ESP; + case IPV6_USER_FLOW: + return IAVF_FDIR_FLOW_IPV6_OTHER; + case ETHER_FLOW: + return IAVF_FDIR_FLOW_NON_IP_L2; + default: + return IAVF_FDIR_FLOW_NONE; + } +} + +/** + * iavf_is_mask_valid - check mask field set + * @mask: full mask to check + * @field: field for which mask should be valid + * + * If the mask is fully set return true. If it is not valid for field return + * false. + */ +static bool iavf_is_mask_valid(u64 mask, u64 field) +{ + return (mask & field) == field; +} + +/** + * iavf_parse_rx_flow_user_data - deconstruct user-defined data + * @fsp: pointer to ethtool Rx flow specification + * @fltr: pointer to Flow Director filter for userdef data storage + * + * Returns 0 on success, negative error value on failure + */ +static int +iavf_parse_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp, + struct iavf_fdir_fltr *fltr) +{ + struct iavf_flex_word *flex; + int i, cnt = 0; + + if (!(fsp->flow_type & FLOW_EXT)) + return 0; + + for (i = 0; i < IAVF_FLEX_WORD_NUM; i++) { +#define IAVF_USERDEF_FLEX_WORD_M GENMASK(15, 0) +#define IAVF_USERDEF_FLEX_OFFS_S 16 +#define IAVF_USERDEF_FLEX_OFFS_M GENMASK(31, IAVF_USERDEF_FLEX_OFFS_S) +#define IAVF_USERDEF_FLEX_FLTR_M GENMASK(31, 0) + u32 value = be32_to_cpu(fsp->h_ext.data[i]); + u32 mask = be32_to_cpu(fsp->m_ext.data[i]); + + if (!value || !mask) + continue; + + if (!iavf_is_mask_valid(mask, IAVF_USERDEF_FLEX_FLTR_M)) + return -EINVAL; + + /* 504 is the maximum value for offsets, and offset is measured + * from the start of the MAC address. + */ +#define IAVF_USERDEF_FLEX_MAX_OFFS_VAL 504 + flex = &fltr->flex_words[cnt++]; + flex->word = value & IAVF_USERDEF_FLEX_WORD_M; + flex->offset = (value & IAVF_USERDEF_FLEX_OFFS_M) >> + IAVF_USERDEF_FLEX_OFFS_S; + if (flex->offset > IAVF_USERDEF_FLEX_MAX_OFFS_VAL) + return -EINVAL; + } + + fltr->flex_cnt = cnt; + + return 0; +} + +/** + * iavf_fill_rx_flow_ext_data - fill the additional data + * @fsp: pointer to ethtool Rx flow specification + * @fltr: pointer to Flow Director filter to get additional data + */ +static void +iavf_fill_rx_flow_ext_data(struct ethtool_rx_flow_spec *fsp, + struct iavf_fdir_fltr *fltr) +{ + if (!fltr->ext_mask.usr_def[0] && !fltr->ext_mask.usr_def[1]) + return; + + fsp->flow_type |= FLOW_EXT; + + memcpy(fsp->h_ext.data, fltr->ext_data.usr_def, sizeof(fsp->h_ext.data)); + memcpy(fsp->m_ext.data, fltr->ext_mask.usr_def, sizeof(fsp->m_ext.data)); +} + +/** + * iavf_get_ethtool_fdir_entry - fill ethtool structure with Flow Director filter data + * @adapter: the VF adapter structure that contains filter list + * @cmd: ethtool command data structure to receive the filter data + * + * Returns 0 as expected for success by ethtool + */ +static int +iavf_get_ethtool_fdir_entry(struct iavf_adapter *adapter, + struct ethtool_rxnfc *cmd) +{ + struct ethtool_rx_flow_spec *fsp = (struct ethtool_rx_flow_spec *)&cmd->fs; + struct iavf_fdir_fltr *rule = NULL; + int ret = 0; + + if (!(adapter->flags & IAVF_FLAG_FDIR_ENABLED)) + return -EOPNOTSUPP; + + spin_lock_bh(&adapter->fdir_fltr_lock); + + rule = iavf_find_fdir_fltr_by_loc(adapter, fsp->location); + if (!rule) { + ret = -EINVAL; + goto release_lock; + } + + fsp->flow_type = iavf_fltr_to_ethtool_flow(rule->flow_type); + + memset(&fsp->m_u, 0, sizeof(fsp->m_u)); + memset(&fsp->m_ext, 0, sizeof(fsp->m_ext)); + + switch (fsp->flow_type) { + case TCP_V4_FLOW: + case UDP_V4_FLOW: + case SCTP_V4_FLOW: + fsp->h_u.tcp_ip4_spec.ip4src = rule->ip_data.v4_addrs.src_ip; + fsp->h_u.tcp_ip4_spec.ip4dst = rule->ip_data.v4_addrs.dst_ip; + fsp->h_u.tcp_ip4_spec.psrc = rule->ip_data.src_port; + fsp->h_u.tcp_ip4_spec.pdst = rule->ip_data.dst_port; + fsp->h_u.tcp_ip4_spec.tos = rule->ip_data.tos; + fsp->m_u.tcp_ip4_spec.ip4src = rule->ip_mask.v4_addrs.src_ip; + fsp->m_u.tcp_ip4_spec.ip4dst = rule->ip_mask.v4_addrs.dst_ip; + fsp->m_u.tcp_ip4_spec.psrc = rule->ip_mask.src_port; + fsp->m_u.tcp_ip4_spec.pdst = rule->ip_mask.dst_port; + fsp->m_u.tcp_ip4_spec.tos = rule->ip_mask.tos; + break; + case AH_V4_FLOW: + case ESP_V4_FLOW: + fsp->h_u.ah_ip4_spec.ip4src = rule->ip_data.v4_addrs.src_ip; + fsp->h_u.ah_ip4_spec.ip4dst = rule->ip_data.v4_addrs.dst_ip; + fsp->h_u.ah_ip4_spec.spi = rule->ip_data.spi; + fsp->h_u.ah_ip4_spec.tos = rule->ip_data.tos; + fsp->m_u.ah_ip4_spec.ip4src = rule->ip_mask.v4_addrs.src_ip; + fsp->m_u.ah_ip4_spec.ip4dst = rule->ip_mask.v4_addrs.dst_ip; + fsp->m_u.ah_ip4_spec.spi = rule->ip_mask.spi; + fsp->m_u.ah_ip4_spec.tos = rule->ip_mask.tos; + break; + case IPV4_USER_FLOW: + fsp->h_u.usr_ip4_spec.ip4src = rule->ip_data.v4_addrs.src_ip; + fsp->h_u.usr_ip4_spec.ip4dst = rule->ip_data.v4_addrs.dst_ip; + fsp->h_u.usr_ip4_spec.l4_4_bytes = rule->ip_data.l4_header; + fsp->h_u.usr_ip4_spec.tos = rule->ip_data.tos; + fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4; + fsp->h_u.usr_ip4_spec.proto = rule->ip_data.proto; + fsp->m_u.usr_ip4_spec.ip4src = rule->ip_mask.v4_addrs.src_ip; + fsp->m_u.usr_ip4_spec.ip4dst = rule->ip_mask.v4_addrs.dst_ip; + fsp->m_u.usr_ip4_spec.l4_4_bytes = rule->ip_mask.l4_header; + fsp->m_u.usr_ip4_spec.tos = rule->ip_mask.tos; + fsp->m_u.usr_ip4_spec.ip_ver = 0xFF; + fsp->m_u.usr_ip4_spec.proto = rule->ip_mask.proto; + break; + case TCP_V6_FLOW: + case UDP_V6_FLOW: + case SCTP_V6_FLOW: + memcpy(fsp->h_u.usr_ip6_spec.ip6src, &rule->ip_data.v6_addrs.src_ip, + sizeof(struct in6_addr)); + memcpy(fsp->h_u.usr_ip6_spec.ip6dst, &rule->ip_data.v6_addrs.dst_ip, + sizeof(struct in6_addr)); + fsp->h_u.tcp_ip6_spec.psrc = rule->ip_data.src_port; + fsp->h_u.tcp_ip6_spec.pdst = rule->ip_data.dst_port; + fsp->h_u.tcp_ip6_spec.tclass = rule->ip_data.tclass; + memcpy(fsp->m_u.usr_ip6_spec.ip6src, &rule->ip_mask.v6_addrs.src_ip, + sizeof(struct in6_addr)); + memcpy(fsp->m_u.usr_ip6_spec.ip6dst, &rule->ip_mask.v6_addrs.dst_ip, + sizeof(struct in6_addr)); + fsp->m_u.tcp_ip6_spec.psrc = rule->ip_mask.src_port; + fsp->m_u.tcp_ip6_spec.pdst = rule->ip_mask.dst_port; + fsp->m_u.tcp_ip6_spec.tclass = rule->ip_mask.tclass; + break; + case AH_V6_FLOW: + case ESP_V6_FLOW: + memcpy(fsp->h_u.ah_ip6_spec.ip6src, &rule->ip_data.v6_addrs.src_ip, + sizeof(struct in6_addr)); + memcpy(fsp->h_u.ah_ip6_spec.ip6dst, &rule->ip_data.v6_addrs.dst_ip, + sizeof(struct in6_addr)); + fsp->h_u.ah_ip6_spec.spi = rule->ip_data.spi; + fsp->h_u.ah_ip6_spec.tclass = rule->ip_data.tclass; + memcpy(fsp->m_u.ah_ip6_spec.ip6src, &rule->ip_mask.v6_addrs.src_ip, + sizeof(struct in6_addr)); + memcpy(fsp->m_u.ah_ip6_spec.ip6dst, &rule->ip_mask.v6_addrs.dst_ip, + sizeof(struct in6_addr)); + fsp->m_u.ah_ip6_spec.spi = rule->ip_mask.spi; + fsp->m_u.ah_ip6_spec.tclass = rule->ip_mask.tclass; + break; + case IPV6_USER_FLOW: + memcpy(fsp->h_u.usr_ip6_spec.ip6src, &rule->ip_data.v6_addrs.src_ip, + sizeof(struct in6_addr)); + memcpy(fsp->h_u.usr_ip6_spec.ip6dst, &rule->ip_data.v6_addrs.dst_ip, + sizeof(struct in6_addr)); + fsp->h_u.usr_ip6_spec.l4_4_bytes = rule->ip_data.l4_header; + fsp->h_u.usr_ip6_spec.tclass = rule->ip_data.tclass; + fsp->h_u.usr_ip6_spec.l4_proto = rule->ip_data.proto; + memcpy(fsp->m_u.usr_ip6_spec.ip6src, &rule->ip_mask.v6_addrs.src_ip, + sizeof(struct in6_addr)); + memcpy(fsp->m_u.usr_ip6_spec.ip6dst, &rule->ip_mask.v6_addrs.dst_ip, + sizeof(struct in6_addr)); + fsp->m_u.usr_ip6_spec.l4_4_bytes = rule->ip_mask.l4_header; + fsp->m_u.usr_ip6_spec.tclass = rule->ip_mask.tclass; + fsp->m_u.usr_ip6_spec.l4_proto = rule->ip_mask.proto; + break; + case ETHER_FLOW: + fsp->h_u.ether_spec.h_proto = rule->eth_data.etype; + fsp->m_u.ether_spec.h_proto = rule->eth_mask.etype; + break; + default: + ret = -EINVAL; + break; + } + + iavf_fill_rx_flow_ext_data(fsp, rule); + + if (rule->action == VIRTCHNL_ACTION_DROP) + fsp->ring_cookie = RX_CLS_FLOW_DISC; + else + fsp->ring_cookie = rule->q_index; + +release_lock: + spin_unlock_bh(&adapter->fdir_fltr_lock); + return ret; +} + +/** + * iavf_get_fdir_fltr_ids - fill buffer with filter IDs of active filters + * @adapter: the VF adapter structure containing the filter list + * @cmd: ethtool command data structure + * @rule_locs: ethtool array passed in from OS to receive filter IDs + * + * Returns 0 as expected for success by ethtool + */ +static int +iavf_get_fdir_fltr_ids(struct iavf_adapter *adapter, struct ethtool_rxnfc *cmd, + u32 *rule_locs) +{ + struct iavf_fdir_fltr *fltr; + unsigned int cnt = 0; + int val = 0; + + if (!(adapter->flags & IAVF_FLAG_FDIR_ENABLED)) + return -EOPNOTSUPP; + + cmd->data = IAVF_MAX_FDIR_FILTERS; + + spin_lock_bh(&adapter->fdir_fltr_lock); + + list_for_each_entry(fltr, &adapter->fdir_list_head, list) { + if (cnt == cmd->rule_cnt) { + val = -EMSGSIZE; + goto release_lock; + } + rule_locs[cnt] = fltr->loc; + cnt++; + } + +release_lock: + spin_unlock_bh(&adapter->fdir_fltr_lock); + if (!val) + cmd->rule_cnt = cnt; + + return val; +} + +/** + * iavf_add_fdir_fltr_info - Set the input set for Flow Director filter + * @adapter: pointer to the VF adapter structure + * @fsp: pointer to ethtool Rx flow specification + * @fltr: filter structure + */ +static int +iavf_add_fdir_fltr_info(struct iavf_adapter *adapter, struct ethtool_rx_flow_spec *fsp, + struct iavf_fdir_fltr *fltr) +{ + u32 flow_type, q_index = 0; + enum virtchnl_action act; + int err; + + if (fsp->ring_cookie == RX_CLS_FLOW_DISC) { + act = VIRTCHNL_ACTION_DROP; + } else { + q_index = fsp->ring_cookie; + if (q_index >= adapter->num_active_queues) + return -EINVAL; + + act = VIRTCHNL_ACTION_QUEUE; + } + + fltr->action = act; + fltr->loc = fsp->location; + fltr->q_index = q_index; + + if (fsp->flow_type & FLOW_EXT) { + memcpy(fltr->ext_data.usr_def, fsp->h_ext.data, + sizeof(fltr->ext_data.usr_def)); + memcpy(fltr->ext_mask.usr_def, fsp->m_ext.data, + sizeof(fltr->ext_mask.usr_def)); + } + + flow_type = fsp->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS); + fltr->flow_type = iavf_ethtool_flow_to_fltr(flow_type); + + switch (flow_type) { + case TCP_V4_FLOW: + case UDP_V4_FLOW: + case SCTP_V4_FLOW: + fltr->ip_data.v4_addrs.src_ip = fsp->h_u.tcp_ip4_spec.ip4src; + fltr->ip_data.v4_addrs.dst_ip = fsp->h_u.tcp_ip4_spec.ip4dst; + fltr->ip_data.src_port = fsp->h_u.tcp_ip4_spec.psrc; + fltr->ip_data.dst_port = fsp->h_u.tcp_ip4_spec.pdst; + fltr->ip_data.tos = fsp->h_u.tcp_ip4_spec.tos; + fltr->ip_mask.v4_addrs.src_ip = fsp->m_u.tcp_ip4_spec.ip4src; + fltr->ip_mask.v4_addrs.dst_ip = fsp->m_u.tcp_ip4_spec.ip4dst; + fltr->ip_mask.src_port = fsp->m_u.tcp_ip4_spec.psrc; + fltr->ip_mask.dst_port = fsp->m_u.tcp_ip4_spec.pdst; + fltr->ip_mask.tos = fsp->m_u.tcp_ip4_spec.tos; + fltr->ip_ver = 4; + break; + case AH_V4_FLOW: + case ESP_V4_FLOW: + fltr->ip_data.v4_addrs.src_ip = fsp->h_u.ah_ip4_spec.ip4src; + fltr->ip_data.v4_addrs.dst_ip = fsp->h_u.ah_ip4_spec.ip4dst; + fltr->ip_data.spi = fsp->h_u.ah_ip4_spec.spi; + fltr->ip_data.tos = fsp->h_u.ah_ip4_spec.tos; + fltr->ip_mask.v4_addrs.src_ip = fsp->m_u.ah_ip4_spec.ip4src; + fltr->ip_mask.v4_addrs.dst_ip = fsp->m_u.ah_ip4_spec.ip4dst; + fltr->ip_mask.spi = fsp->m_u.ah_ip4_spec.spi; + fltr->ip_mask.tos = fsp->m_u.ah_ip4_spec.tos; + fltr->ip_ver = 4; + break; + case IPV4_USER_FLOW: + fltr->ip_data.v4_addrs.src_ip = fsp->h_u.usr_ip4_spec.ip4src; + fltr->ip_data.v4_addrs.dst_ip = fsp->h_u.usr_ip4_spec.ip4dst; + fltr->ip_data.l4_header = fsp->h_u.usr_ip4_spec.l4_4_bytes; + fltr->ip_data.tos = fsp->h_u.usr_ip4_spec.tos; + fltr->ip_data.proto = fsp->h_u.usr_ip4_spec.proto; + fltr->ip_mask.v4_addrs.src_ip = fsp->m_u.usr_ip4_spec.ip4src; + fltr->ip_mask.v4_addrs.dst_ip = fsp->m_u.usr_ip4_spec.ip4dst; + fltr->ip_mask.l4_header = fsp->m_u.usr_ip4_spec.l4_4_bytes; + fltr->ip_mask.tos = fsp->m_u.usr_ip4_spec.tos; + fltr->ip_mask.proto = fsp->m_u.usr_ip4_spec.proto; + fltr->ip_ver = 4; + break; + case TCP_V6_FLOW: + case UDP_V6_FLOW: + case SCTP_V6_FLOW: + memcpy(&fltr->ip_data.v6_addrs.src_ip, fsp->h_u.usr_ip6_spec.ip6src, + sizeof(struct in6_addr)); + memcpy(&fltr->ip_data.v6_addrs.dst_ip, fsp->h_u.usr_ip6_spec.ip6dst, + sizeof(struct in6_addr)); + fltr->ip_data.src_port = fsp->h_u.tcp_ip6_spec.psrc; + fltr->ip_data.dst_port = fsp->h_u.tcp_ip6_spec.pdst; + fltr->ip_data.tclass = fsp->h_u.tcp_ip6_spec.tclass; + memcpy(&fltr->ip_mask.v6_addrs.src_ip, fsp->m_u.usr_ip6_spec.ip6src, + sizeof(struct in6_addr)); + memcpy(&fltr->ip_mask.v6_addrs.dst_ip, fsp->m_u.usr_ip6_spec.ip6dst, + sizeof(struct in6_addr)); + fltr->ip_mask.src_port = fsp->m_u.tcp_ip6_spec.psrc; + fltr->ip_mask.dst_port = fsp->m_u.tcp_ip6_spec.pdst; + fltr->ip_mask.tclass = fsp->m_u.tcp_ip6_spec.tclass; + fltr->ip_ver = 6; + break; + case AH_V6_FLOW: + case ESP_V6_FLOW: + memcpy(&fltr->ip_data.v6_addrs.src_ip, fsp->h_u.ah_ip6_spec.ip6src, + sizeof(struct in6_addr)); + memcpy(&fltr->ip_data.v6_addrs.dst_ip, fsp->h_u.ah_ip6_spec.ip6dst, + sizeof(struct in6_addr)); + fltr->ip_data.spi = fsp->h_u.ah_ip6_spec.spi; + fltr->ip_data.tclass = fsp->h_u.ah_ip6_spec.tclass; + memcpy(&fltr->ip_mask.v6_addrs.src_ip, fsp->m_u.ah_ip6_spec.ip6src, + sizeof(struct in6_addr)); + memcpy(&fltr->ip_mask.v6_addrs.dst_ip, fsp->m_u.ah_ip6_spec.ip6dst, + sizeof(struct in6_addr)); + fltr->ip_mask.spi = fsp->m_u.ah_ip6_spec.spi; + fltr->ip_mask.tclass = fsp->m_u.ah_ip6_spec.tclass; + fltr->ip_ver = 6; + break; + case IPV6_USER_FLOW: + memcpy(&fltr->ip_data.v6_addrs.src_ip, fsp->h_u.usr_ip6_spec.ip6src, + sizeof(struct in6_addr)); + memcpy(&fltr->ip_data.v6_addrs.dst_ip, fsp->h_u.usr_ip6_spec.ip6dst, + sizeof(struct in6_addr)); + fltr->ip_data.l4_header = fsp->h_u.usr_ip6_spec.l4_4_bytes; + fltr->ip_data.tclass = fsp->h_u.usr_ip6_spec.tclass; + fltr->ip_data.proto = fsp->h_u.usr_ip6_spec.l4_proto; + memcpy(&fltr->ip_mask.v6_addrs.src_ip, fsp->m_u.usr_ip6_spec.ip6src, + sizeof(struct in6_addr)); + memcpy(&fltr->ip_mask.v6_addrs.dst_ip, fsp->m_u.usr_ip6_spec.ip6dst, + sizeof(struct in6_addr)); + fltr->ip_mask.l4_header = fsp->m_u.usr_ip6_spec.l4_4_bytes; + fltr->ip_mask.tclass = fsp->m_u.usr_ip6_spec.tclass; + fltr->ip_mask.proto = fsp->m_u.usr_ip6_spec.l4_proto; + fltr->ip_ver = 6; + break; + case ETHER_FLOW: + fltr->eth_data.etype = fsp->h_u.ether_spec.h_proto; + fltr->eth_mask.etype = fsp->m_u.ether_spec.h_proto; + break; + default: + /* not doing un-parsed flow types */ + return -EINVAL; + } + + err = iavf_validate_fdir_fltr_masks(adapter, fltr); + if (err) + return err; + + if (iavf_fdir_is_dup_fltr(adapter, fltr)) + return -EEXIST; + + err = iavf_parse_rx_flow_user_data(fsp, fltr); + if (err) + return err; + + return iavf_fill_fdir_add_msg(adapter, fltr); +} + +/** + * iavf_add_fdir_ethtool - add Flow Director filter + * @adapter: pointer to the VF adapter structure + * @cmd: command to add Flow Director filter + * + * Returns 0 on success and negative values for failure + */ +static int iavf_add_fdir_ethtool(struct iavf_adapter *adapter, struct ethtool_rxnfc *cmd) +{ + struct ethtool_rx_flow_spec *fsp = &cmd->fs; + struct iavf_fdir_fltr *fltr; + int count = 50; + int err; + + if (!(adapter->flags & IAVF_FLAG_FDIR_ENABLED)) + return -EOPNOTSUPP; + + if (fsp->flow_type & FLOW_MAC_EXT) + return -EINVAL; + + spin_lock_bh(&adapter->fdir_fltr_lock); + if (adapter->fdir_active_fltr >= IAVF_MAX_FDIR_FILTERS) { + spin_unlock_bh(&adapter->fdir_fltr_lock); + dev_err(&adapter->pdev->dev, + "Unable to add Flow Director filter because VF reached the limit of max allowed filters (%u)\n", + IAVF_MAX_FDIR_FILTERS); + return -ENOSPC; + } + + if (iavf_find_fdir_fltr_by_loc(adapter, fsp->location)) { + dev_err(&adapter->pdev->dev, "Failed to add Flow Director filter, it already exists\n"); + spin_unlock_bh(&adapter->fdir_fltr_lock); + return -EEXIST; + } + spin_unlock_bh(&adapter->fdir_fltr_lock); + + fltr = kzalloc(sizeof(*fltr), GFP_KERNEL); + if (!fltr) + return -ENOMEM; + + while (!mutex_trylock(&adapter->crit_lock)) { + if (--count == 0) { + kfree(fltr); + return -EINVAL; + } + udelay(1); + } + + err = iavf_add_fdir_fltr_info(adapter, fsp, fltr); + if (err) + goto ret; + + spin_lock_bh(&adapter->fdir_fltr_lock); + iavf_fdir_list_add_fltr(adapter, fltr); + adapter->fdir_active_fltr++; + if (adapter->link_up) { + fltr->state = IAVF_FDIR_FLTR_ADD_REQUEST; + adapter->aq_required |= IAVF_FLAG_AQ_ADD_FDIR_FILTER; + } else { + fltr->state = IAVF_FDIR_FLTR_INACTIVE; + } + spin_unlock_bh(&adapter->fdir_fltr_lock); + + if (adapter->link_up) + mod_delayed_work(adapter->wq, &adapter->watchdog_task, 0); +ret: + if (err && fltr) + kfree(fltr); + + mutex_unlock(&adapter->crit_lock); + return err; +} + +/** + * iavf_del_fdir_ethtool - delete Flow Director filter + * @adapter: pointer to the VF adapter structure + * @cmd: command to delete Flow Director filter + * + * Returns 0 on success and negative values for failure + */ +static int iavf_del_fdir_ethtool(struct iavf_adapter *adapter, struct ethtool_rxnfc *cmd) +{ + struct ethtool_rx_flow_spec *fsp = (struct ethtool_rx_flow_spec *)&cmd->fs; + struct iavf_fdir_fltr *fltr = NULL; + int err = 0; + + if (!(adapter->flags & IAVF_FLAG_FDIR_ENABLED)) + return -EOPNOTSUPP; + + spin_lock_bh(&adapter->fdir_fltr_lock); + fltr = iavf_find_fdir_fltr_by_loc(adapter, fsp->location); + if (fltr) { + if (fltr->state == IAVF_FDIR_FLTR_ACTIVE) { + fltr->state = IAVF_FDIR_FLTR_DEL_REQUEST; + adapter->aq_required |= IAVF_FLAG_AQ_DEL_FDIR_FILTER; + } else if (fltr->state == IAVF_FDIR_FLTR_INACTIVE) { + list_del(&fltr->list); + kfree(fltr); + adapter->fdir_active_fltr--; + fltr = NULL; + } else { + err = -EBUSY; + } + } else if (adapter->fdir_active_fltr) { + err = -EINVAL; + } + spin_unlock_bh(&adapter->fdir_fltr_lock); + + if (fltr && fltr->state == IAVF_FDIR_FLTR_DEL_REQUEST) + mod_delayed_work(adapter->wq, &adapter->watchdog_task, 0); + + return err; +} + +/** + * iavf_adv_rss_parse_hdrs - parses headers from RSS hash input + * @cmd: ethtool rxnfc command + * + * This function parses the rxnfc command and returns intended + * header types for RSS configuration + */ +static u32 iavf_adv_rss_parse_hdrs(struct ethtool_rxnfc *cmd) +{ + u32 hdrs = IAVF_ADV_RSS_FLOW_SEG_HDR_NONE; + + switch (cmd->flow_type) { + case TCP_V4_FLOW: + hdrs |= IAVF_ADV_RSS_FLOW_SEG_HDR_TCP | + IAVF_ADV_RSS_FLOW_SEG_HDR_IPV4; + break; + case UDP_V4_FLOW: + hdrs |= IAVF_ADV_RSS_FLOW_SEG_HDR_UDP | + IAVF_ADV_RSS_FLOW_SEG_HDR_IPV4; + break; + case SCTP_V4_FLOW: + hdrs |= IAVF_ADV_RSS_FLOW_SEG_HDR_SCTP | + IAVF_ADV_RSS_FLOW_SEG_HDR_IPV4; + break; + case TCP_V6_FLOW: + hdrs |= IAVF_ADV_RSS_FLOW_SEG_HDR_TCP | + IAVF_ADV_RSS_FLOW_SEG_HDR_IPV6; + break; + case UDP_V6_FLOW: + hdrs |= IAVF_ADV_RSS_FLOW_SEG_HDR_UDP | + IAVF_ADV_RSS_FLOW_SEG_HDR_IPV6; + break; + case SCTP_V6_FLOW: + hdrs |= IAVF_ADV_RSS_FLOW_SEG_HDR_SCTP | + IAVF_ADV_RSS_FLOW_SEG_HDR_IPV6; + break; + default: + break; + } + + return hdrs; +} + +/** + * iavf_adv_rss_parse_hash_flds - parses hash fields from RSS hash input + * @cmd: ethtool rxnfc command + * + * This function parses the rxnfc command and returns intended hash fields for + * RSS configuration + */ +static u64 iavf_adv_rss_parse_hash_flds(struct ethtool_rxnfc *cmd) +{ + u64 hfld = IAVF_ADV_RSS_HASH_INVALID; + + if (cmd->data & RXH_IP_SRC || cmd->data & RXH_IP_DST) { + switch (cmd->flow_type) { + case TCP_V4_FLOW: + case UDP_V4_FLOW: + case SCTP_V4_FLOW: + if (cmd->data & RXH_IP_SRC) + hfld |= IAVF_ADV_RSS_HASH_FLD_IPV4_SA; + if (cmd->data & RXH_IP_DST) + hfld |= IAVF_ADV_RSS_HASH_FLD_IPV4_DA; + break; + case TCP_V6_FLOW: + case UDP_V6_FLOW: + case SCTP_V6_FLOW: + if (cmd->data & RXH_IP_SRC) + hfld |= IAVF_ADV_RSS_HASH_FLD_IPV6_SA; + if (cmd->data & RXH_IP_DST) + hfld |= IAVF_ADV_RSS_HASH_FLD_IPV6_DA; + break; + default: + break; + } + } + + if (cmd->data & RXH_L4_B_0_1 || cmd->data & RXH_L4_B_2_3) { + switch (cmd->flow_type) { + case TCP_V4_FLOW: + case TCP_V6_FLOW: + if (cmd->data & RXH_L4_B_0_1) + hfld |= IAVF_ADV_RSS_HASH_FLD_TCP_SRC_PORT; + if (cmd->data & RXH_L4_B_2_3) + hfld |= IAVF_ADV_RSS_HASH_FLD_TCP_DST_PORT; + break; + case UDP_V4_FLOW: + case UDP_V6_FLOW: + if (cmd->data & RXH_L4_B_0_1) + hfld |= IAVF_ADV_RSS_HASH_FLD_UDP_SRC_PORT; + if (cmd->data & RXH_L4_B_2_3) + hfld |= IAVF_ADV_RSS_HASH_FLD_UDP_DST_PORT; + break; + case SCTP_V4_FLOW: + case SCTP_V6_FLOW: + if (cmd->data & RXH_L4_B_0_1) + hfld |= IAVF_ADV_RSS_HASH_FLD_SCTP_SRC_PORT; + if (cmd->data & RXH_L4_B_2_3) + hfld |= IAVF_ADV_RSS_HASH_FLD_SCTP_DST_PORT; + break; + default: + break; + } + } + + return hfld; +} + +/** + * iavf_set_adv_rss_hash_opt - Enable/Disable flow types for RSS hash + * @adapter: pointer to the VF adapter structure + * @cmd: ethtool rxnfc command + * + * Returns Success if the flow input set is supported. + */ +static int +iavf_set_adv_rss_hash_opt(struct iavf_adapter *adapter, + struct ethtool_rxnfc *cmd) +{ + struct iavf_adv_rss *rss_old, *rss_new; + bool rss_new_add = false; + int count = 50, err = 0; + u64 hash_flds; + u32 hdrs; + + if (!ADV_RSS_SUPPORT(adapter)) + return -EOPNOTSUPP; + + hdrs = iavf_adv_rss_parse_hdrs(cmd); + if (hdrs == IAVF_ADV_RSS_FLOW_SEG_HDR_NONE) + return -EINVAL; + + hash_flds = iavf_adv_rss_parse_hash_flds(cmd); + if (hash_flds == IAVF_ADV_RSS_HASH_INVALID) + return -EINVAL; + + rss_new = kzalloc(sizeof(*rss_new), GFP_KERNEL); + if (!rss_new) + return -ENOMEM; + + if (iavf_fill_adv_rss_cfg_msg(&rss_new->cfg_msg, hdrs, hash_flds)) { + kfree(rss_new); + return -EINVAL; + } + + while (!mutex_trylock(&adapter->crit_lock)) { + if (--count == 0) { + kfree(rss_new); + return -EINVAL; + } + + udelay(1); + } + + spin_lock_bh(&adapter->adv_rss_lock); + rss_old = iavf_find_adv_rss_cfg_by_hdrs(adapter, hdrs); + if (rss_old) { + if (rss_old->state != IAVF_ADV_RSS_ACTIVE) { + err = -EBUSY; + } else if (rss_old->hash_flds != hash_flds) { + rss_old->state = IAVF_ADV_RSS_ADD_REQUEST; + rss_old->hash_flds = hash_flds; + memcpy(&rss_old->cfg_msg, &rss_new->cfg_msg, + sizeof(rss_new->cfg_msg)); + adapter->aq_required |= IAVF_FLAG_AQ_ADD_ADV_RSS_CFG; + } else { + err = -EEXIST; + } + } else { + rss_new_add = true; + rss_new->state = IAVF_ADV_RSS_ADD_REQUEST; + rss_new->packet_hdrs = hdrs; + rss_new->hash_flds = hash_flds; + list_add_tail(&rss_new->list, &adapter->adv_rss_list_head); + adapter->aq_required |= IAVF_FLAG_AQ_ADD_ADV_RSS_CFG; + } + spin_unlock_bh(&adapter->adv_rss_lock); + + if (!err) + mod_delayed_work(adapter->wq, &adapter->watchdog_task, 0); + + mutex_unlock(&adapter->crit_lock); + + if (!rss_new_add) + kfree(rss_new); + + return err; +} + +/** + * iavf_get_adv_rss_hash_opt - Retrieve hash fields for a given flow-type + * @adapter: pointer to the VF adapter structure + * @cmd: ethtool rxnfc command + * + * Returns Success if the flow input set is supported. + */ +static int +iavf_get_adv_rss_hash_opt(struct iavf_adapter *adapter, + struct ethtool_rxnfc *cmd) +{ + struct iavf_adv_rss *rss; + u64 hash_flds; + u32 hdrs; + + if (!ADV_RSS_SUPPORT(adapter)) + return -EOPNOTSUPP; + + cmd->data = 0; + + hdrs = iavf_adv_rss_parse_hdrs(cmd); + if (hdrs == IAVF_ADV_RSS_FLOW_SEG_HDR_NONE) + return -EINVAL; + + spin_lock_bh(&adapter->adv_rss_lock); + rss = iavf_find_adv_rss_cfg_by_hdrs(adapter, hdrs); + if (rss) + hash_flds = rss->hash_flds; + else + hash_flds = IAVF_ADV_RSS_HASH_INVALID; + spin_unlock_bh(&adapter->adv_rss_lock); + + if (hash_flds == IAVF_ADV_RSS_HASH_INVALID) + return -EINVAL; + + if (hash_flds & (IAVF_ADV_RSS_HASH_FLD_IPV4_SA | + IAVF_ADV_RSS_HASH_FLD_IPV6_SA)) + cmd->data |= (u64)RXH_IP_SRC; + + if (hash_flds & (IAVF_ADV_RSS_HASH_FLD_IPV4_DA | + IAVF_ADV_RSS_HASH_FLD_IPV6_DA)) + cmd->data |= (u64)RXH_IP_DST; + + if (hash_flds & (IAVF_ADV_RSS_HASH_FLD_TCP_SRC_PORT | + IAVF_ADV_RSS_HASH_FLD_UDP_SRC_PORT | + IAVF_ADV_RSS_HASH_FLD_SCTP_SRC_PORT)) + cmd->data |= (u64)RXH_L4_B_0_1; + + if (hash_flds & (IAVF_ADV_RSS_HASH_FLD_TCP_DST_PORT | + IAVF_ADV_RSS_HASH_FLD_UDP_DST_PORT | + IAVF_ADV_RSS_HASH_FLD_SCTP_DST_PORT)) + cmd->data |= (u64)RXH_L4_B_2_3; + + return 0; +} + +/** + * iavf_set_rxnfc - command to set Rx flow rules. + * @netdev: network interface device structure + * @cmd: ethtool rxnfc command + * + * Returns 0 for success and negative values for errors + */ +static int iavf_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd) +{ + struct iavf_adapter *adapter = netdev_priv(netdev); + int ret = -EOPNOTSUPP; + + switch (cmd->cmd) { + case ETHTOOL_SRXCLSRLINS: + ret = iavf_add_fdir_ethtool(adapter, cmd); + break; + case ETHTOOL_SRXCLSRLDEL: + ret = iavf_del_fdir_ethtool(adapter, cmd); + break; + case ETHTOOL_SRXFH: + ret = iavf_set_adv_rss_hash_opt(adapter, cmd); + break; + default: + break; + } + + return ret; +} + +/** + * iavf_get_rxnfc - command to get RX flow classification rules + * @netdev: network interface device structure + * @cmd: ethtool rxnfc command + * @rule_locs: pointer to store rule locations + * + * Returns Success if the command is supported. + **/ +static int iavf_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd, + u32 *rule_locs) +{ + struct iavf_adapter *adapter = netdev_priv(netdev); + int ret = -EOPNOTSUPP; + + switch (cmd->cmd) { + case ETHTOOL_GRXRINGS: + cmd->data = adapter->num_active_queues; + ret = 0; + break; + case ETHTOOL_GRXCLSRLCNT: + if (!(adapter->flags & IAVF_FLAG_FDIR_ENABLED)) + break; + spin_lock_bh(&adapter->fdir_fltr_lock); + cmd->rule_cnt = adapter->fdir_active_fltr; + spin_unlock_bh(&adapter->fdir_fltr_lock); + cmd->data = IAVF_MAX_FDIR_FILTERS; + ret = 0; + break; + case ETHTOOL_GRXCLSRULE: + ret = iavf_get_ethtool_fdir_entry(adapter, cmd); + break; + case ETHTOOL_GRXCLSRLALL: + ret = iavf_get_fdir_fltr_ids(adapter, cmd, (u32 *)rule_locs); + break; + case ETHTOOL_GRXFH: + ret = iavf_get_adv_rss_hash_opt(adapter, cmd); + break; + default: + break; + } + + return ret; +} +/** + * iavf_get_channels: get the number of channels supported by the device + * @netdev: network interface device structure + * @ch: channel information structure + * + * For the purposes of our device, we only use combined channels, i.e. a tx/rx + * queue pair. Report one extra channel to match our "other" MSI-X vector. + **/ +static void iavf_get_channels(struct net_device *netdev, + struct ethtool_channels *ch) +{ + struct iavf_adapter *adapter = netdev_priv(netdev); + + /* Report maximum channels */ + ch->max_combined = adapter->vsi_res->num_queue_pairs; + + ch->max_other = NONQ_VECS; + ch->other_count = NONQ_VECS; + + ch->combined_count = adapter->num_active_queues; +} + +/** + * iavf_set_channels: set the new channel count + * @netdev: network interface device structure + * @ch: channel information structure + * + * Negotiate a new number of channels with the PF then do a reset. During + * reset we'll realloc queues and fix the RSS table. Returns 0 on success, + * negative on failure. + **/ +static int iavf_set_channels(struct net_device *netdev, + struct ethtool_channels *ch) +{ + struct iavf_adapter *adapter = netdev_priv(netdev); + u32 num_req = ch->combined_count; + int ret = 0; + + if ((adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) && + adapter->num_tc) { + dev_info(&adapter->pdev->dev, "Cannot set channels since ADq is enabled.\n"); + return -EINVAL; + } + + /* All of these should have already been checked by ethtool before this + * even gets to us, but just to be sure. + */ + if (num_req == 0 || num_req > adapter->vsi_res->num_queue_pairs) + return -EINVAL; + + if (num_req == adapter->num_active_queues) + return 0; + + if (ch->rx_count || ch->tx_count || ch->other_count != NONQ_VECS) + return -EINVAL; + + adapter->num_req_queues = num_req; + adapter->flags |= IAVF_FLAG_REINIT_ITR_NEEDED; + iavf_schedule_reset(adapter, IAVF_FLAG_RESET_NEEDED); + + ret = iavf_wait_for_reset(adapter); + if (ret) + netdev_warn(netdev, "Changing channel count timeout or interrupted waiting for reset"); + + return ret; +} + +/** + * iavf_get_rxfh_key_size - get the RSS hash key size + * @netdev: network interface device structure + * + * Returns the table size. + **/ +static u32 iavf_get_rxfh_key_size(struct net_device *netdev) +{ + struct iavf_adapter *adapter = netdev_priv(netdev); + + return adapter->rss_key_size; +} + +/** + * iavf_get_rxfh_indir_size - get the rx flow hash indirection table size + * @netdev: network interface device structure + * + * Returns the table size. + **/ +static u32 iavf_get_rxfh_indir_size(struct net_device *netdev) +{ + struct iavf_adapter *adapter = netdev_priv(netdev); + + return adapter->rss_lut_size; +} + +/** + * iavf_get_rxfh - get the rx flow hash indirection table + * @netdev: network interface device structure + * @indir: indirection table + * @key: hash key + * @hfunc: hash function in use + * + * Reads the indirection table directly from the hardware. Always returns 0. + **/ +static int iavf_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key, + u8 *hfunc) +{ + struct iavf_adapter *adapter = netdev_priv(netdev); + u16 i; + + if (hfunc) + *hfunc = ETH_RSS_HASH_TOP; + if (key) + memcpy(key, adapter->rss_key, adapter->rss_key_size); + + if (indir) + /* Each 32 bits pointed by 'indir' is stored with a lut entry */ + for (i = 0; i < adapter->rss_lut_size; i++) + indir[i] = (u32)adapter->rss_lut[i]; + + return 0; +} + +/** + * iavf_set_rxfh - set the rx flow hash indirection table + * @netdev: network interface device structure + * @indir: indirection table + * @key: hash key + * @hfunc: hash function to use + * + * Returns -EINVAL if the table specifies an invalid queue id, otherwise + * returns 0 after programming the table. + **/ +static int iavf_set_rxfh(struct net_device *netdev, const u32 *indir, + const u8 *key, const u8 hfunc) +{ + struct iavf_adapter *adapter = netdev_priv(netdev); + u16 i; + + /* Only support toeplitz hash function */ + if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP) + return -EOPNOTSUPP; + + if (!key && !indir) + return 0; + + if (key) + memcpy(adapter->rss_key, key, adapter->rss_key_size); + + if (indir) { + /* Each 32 bits pointed by 'indir' is stored with a lut entry */ + for (i = 0; i < adapter->rss_lut_size; i++) + adapter->rss_lut[i] = (u8)(indir[i]); + } + + return iavf_config_rss(adapter); +} + +static const struct ethtool_ops iavf_ethtool_ops = { + .supported_coalesce_params = ETHTOOL_COALESCE_USECS | + ETHTOOL_COALESCE_USE_ADAPTIVE, + .get_drvinfo = iavf_get_drvinfo, + .get_link = ethtool_op_get_link, + .get_ringparam = iavf_get_ringparam, + .set_ringparam = iavf_set_ringparam, + .get_strings = iavf_get_strings, + .get_ethtool_stats = iavf_get_ethtool_stats, + .get_sset_count = iavf_get_sset_count, + .get_priv_flags = iavf_get_priv_flags, + .set_priv_flags = iavf_set_priv_flags, + .get_msglevel = iavf_get_msglevel, + .set_msglevel = iavf_set_msglevel, + .get_coalesce = iavf_get_coalesce, + .set_coalesce = iavf_set_coalesce, + .get_per_queue_coalesce = iavf_get_per_queue_coalesce, + .set_per_queue_coalesce = iavf_set_per_queue_coalesce, + .set_rxnfc = iavf_set_rxnfc, + .get_rxnfc = iavf_get_rxnfc, + .get_rxfh_indir_size = iavf_get_rxfh_indir_size, + .get_rxfh = iavf_get_rxfh, + .set_rxfh = iavf_set_rxfh, + .get_channels = iavf_get_channels, + .set_channels = iavf_set_channels, + .get_rxfh_key_size = iavf_get_rxfh_key_size, + .get_link_ksettings = iavf_get_link_ksettings, +}; + +/** + * iavf_set_ethtool_ops - Initialize ethtool ops struct + * @netdev: network interface device structure + * + * Sets ethtool ops struct in our netdev so that ethtool can call + * our functions. + **/ +void iavf_set_ethtool_ops(struct net_device *netdev) +{ + netdev->ethtool_ops = &iavf_ethtool_ops; +} |