diff options
Diffstat (limited to 'drivers/net/ethernet/freescale')
20 files changed, 435 insertions, 199 deletions
diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c index f38c3fa7d705..b4b82b9c5cd6 100644 --- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c +++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c @@ -485,7 +485,7 @@ static struct dpaa_bp *dpaa_bpid2pool(int bpid) static bool dpaa_bpid2pool_use(int bpid) { if (dpaa_bpid2pool(bpid)) { - atomic_inc(&dpaa_bp_array[bpid]->refs); + refcount_inc(&dpaa_bp_array[bpid]->refs); return true; } @@ -496,7 +496,7 @@ static bool dpaa_bpid2pool_use(int bpid) static void dpaa_bpid2pool_map(int bpid, struct dpaa_bp *dpaa_bp) { dpaa_bp_array[bpid] = dpaa_bp; - atomic_set(&dpaa_bp->refs, 1); + refcount_set(&dpaa_bp->refs, 1); } static int dpaa_bp_alloc_pool(struct dpaa_bp *dpaa_bp) @@ -584,7 +584,7 @@ static void dpaa_bp_free(struct dpaa_bp *dpaa_bp) if (!bp) return; - if (!atomic_dec_and_test(&bp->refs)) + if (!refcount_dec_and_test(&bp->refs)) return; if (bp->free_buf_cb) @@ -1958,7 +1958,7 @@ static int skb_to_sg_fd(struct dpaa_priv *priv, /* populate the rest of SGT entries */ for (i = 0; i < nr_frags; i++) { frag = &skb_shinfo(skb)->frags[i]; - frag_len = frag->size; + frag_len = skb_frag_size(frag); WARN_ON(!skb_frag_page(frag)); addr = skb_frag_dma_map(dev, frag, 0, frag_len, dma_dir); diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.h b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.h index af320f83c742..f7e59e8db075 100644 --- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.h +++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.h @@ -32,6 +32,7 @@ #define __DPAA_H #include <linux/netdevice.h> +#include <linux/refcount.h> #include <soc/fsl/qman.h> #include <soc/fsl/bman.h> @@ -99,7 +100,7 @@ struct dpaa_bp { int (*seed_cb)(struct dpaa_bp *); /* bpool can be emptied before freeing by this cb */ void (*free_buf_cb)(const struct dpaa_bp *, struct bm_buffer *); - atomic_t refs; + refcount_t refs; }; struct dpaa_rx_errors { diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.c index a027f4a9d0cc..a9afe46b837f 100644 --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.c +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.c @@ -164,70 +164,30 @@ static const struct file_operations dpaa2_dbg_ch_ops = { void dpaa2_dbg_add(struct dpaa2_eth_priv *priv) { - if (!dpaa2_dbg_root) - return; + struct dentry *dir; /* Create a directory for the interface */ - priv->dbg.dir = debugfs_create_dir(priv->net_dev->name, - dpaa2_dbg_root); - if (!priv->dbg.dir) { - netdev_err(priv->net_dev, "debugfs_create_dir() failed\n"); - return; - } + dir = debugfs_create_dir(priv->net_dev->name, dpaa2_dbg_root); + priv->dbg.dir = dir; /* per-cpu stats file */ - priv->dbg.cpu_stats = debugfs_create_file("cpu_stats", 0444, - priv->dbg.dir, priv, - &dpaa2_dbg_cpu_ops); - if (!priv->dbg.cpu_stats) { - netdev_err(priv->net_dev, "debugfs_create_file() failed\n"); - goto err_cpu_stats; - } + debugfs_create_file("cpu_stats", 0444, dir, priv, &dpaa2_dbg_cpu_ops); /* per-fq stats file */ - priv->dbg.fq_stats = debugfs_create_file("fq_stats", 0444, - priv->dbg.dir, priv, - &dpaa2_dbg_fq_ops); - if (!priv->dbg.fq_stats) { - netdev_err(priv->net_dev, "debugfs_create_file() failed\n"); - goto err_fq_stats; - } + debugfs_create_file("fq_stats", 0444, dir, priv, &dpaa2_dbg_fq_ops); /* per-fq stats file */ - priv->dbg.ch_stats = debugfs_create_file("ch_stats", 0444, - priv->dbg.dir, priv, - &dpaa2_dbg_ch_ops); - if (!priv->dbg.fq_stats) { - netdev_err(priv->net_dev, "debugfs_create_file() failed\n"); - goto err_ch_stats; - } - - return; - -err_ch_stats: - debugfs_remove(priv->dbg.fq_stats); -err_fq_stats: - debugfs_remove(priv->dbg.cpu_stats); -err_cpu_stats: - debugfs_remove(priv->dbg.dir); + debugfs_create_file("ch_stats", 0444, dir, priv, &dpaa2_dbg_ch_ops); } void dpaa2_dbg_remove(struct dpaa2_eth_priv *priv) { - debugfs_remove(priv->dbg.fq_stats); - debugfs_remove(priv->dbg.ch_stats); - debugfs_remove(priv->dbg.cpu_stats); - debugfs_remove(priv->dbg.dir); + debugfs_remove_recursive(priv->dbg.dir); } void dpaa2_eth_dbg_init(void) { dpaa2_dbg_root = debugfs_create_dir(DPAA2_ETH_DBG_ROOT, NULL); - if (!dpaa2_dbg_root) { - pr_err("DPAA2-ETH: debugfs create failed\n"); - return; - } - pr_debug("DPAA2-ETH: debugfs created\n"); } diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.h b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.h index 4f63de997a26..15598b28f03b 100644 --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.h +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.h @@ -11,9 +11,6 @@ struct dpaa2_eth_priv; struct dpaa2_debugfs { struct dentry *dir; - struct dentry *fq_stats; - struct dentry *ch_stats; - struct dentry *cpu_stats; }; #ifdef CONFIG_DEBUG_FS diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c index 0acb11557ed1..5402867272be 100644 --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c @@ -1208,9 +1208,37 @@ static void disable_ch_napi(struct dpaa2_eth_priv *priv) } } +static void dpaa2_eth_set_rx_taildrop(struct dpaa2_eth_priv *priv, bool enable) +{ + struct dpni_taildrop td = {0}; + int i, err; + + if (priv->rx_td_enabled == enable) + return; + + td.enable = enable; + td.threshold = DPAA2_ETH_TAILDROP_THRESH; + + for (i = 0; i < priv->num_fqs; i++) { + if (priv->fq[i].type != DPAA2_RX_FQ) + continue; + err = dpni_set_taildrop(priv->mc_io, 0, priv->mc_token, + DPNI_CP_QUEUE, DPNI_QUEUE_RX, 0, + priv->fq[i].flowid, &td); + if (err) { + netdev_err(priv->net_dev, + "dpni_set_taildrop() failed\n"); + break; + } + } + + priv->rx_td_enabled = enable; +} + static int link_state_update(struct dpaa2_eth_priv *priv) { struct dpni_link_state state = {0}; + bool tx_pause; int err; err = dpni_get_link_state(priv->mc_io, 0, priv->mc_token, &state); @@ -1220,11 +1248,18 @@ static int link_state_update(struct dpaa2_eth_priv *priv) return err; } + /* If Tx pause frame settings have changed, we need to update + * Rx FQ taildrop configuration as well. We configure taildrop + * only when pause frame generation is disabled. + */ + tx_pause = !!(state.options & DPNI_LINK_OPT_PAUSE) ^ + !!(state.options & DPNI_LINK_OPT_ASYM_PAUSE); + dpaa2_eth_set_rx_taildrop(priv, !tx_pause); + /* Chech link state; speed / duplex changes are not treated yet */ if (priv->link_state.up == state.up) - return 0; + goto out; - priv->link_state = state; if (state.up) { netif_carrier_on(priv->net_dev); netif_tx_start_all_queues(priv->net_dev); @@ -1236,6 +1271,9 @@ static int link_state_update(struct dpaa2_eth_priv *priv) netdev_info(priv->net_dev, "Link Event: state %s\n", state.up ? "up" : "down"); +out: + priv->link_state = state; + return 0; } @@ -2443,6 +2481,33 @@ static void set_enqueue_mode(struct dpaa2_eth_priv *priv) priv->enqueue = dpaa2_eth_enqueue_fq; } +static int set_pause(struct dpaa2_eth_priv *priv) +{ + struct device *dev = priv->net_dev->dev.parent; + struct dpni_link_cfg link_cfg = {0}; + int err; + + /* Get the default link options so we don't override other flags */ + err = dpni_get_link_cfg(priv->mc_io, 0, priv->mc_token, &link_cfg); + if (err) { + dev_err(dev, "dpni_get_link_cfg() failed\n"); + return err; + } + + /* By default, enable both Rx and Tx pause frames */ + link_cfg.options |= DPNI_LINK_OPT_PAUSE; + link_cfg.options &= ~DPNI_LINK_OPT_ASYM_PAUSE; + err = dpni_set_link_cfg(priv->mc_io, 0, priv->mc_token, &link_cfg); + if (err) { + dev_err(dev, "dpni_set_link_cfg() failed\n"); + return err; + } + + priv->link_state.options = link_cfg.options; + + return 0; +} + /* Configure the DPNI object this interface is associated with */ static int setup_dpni(struct fsl_mc_device *ls_dev) { @@ -2498,6 +2563,13 @@ static int setup_dpni(struct fsl_mc_device *ls_dev) set_enqueue_mode(priv); + /* Enable pause frame support */ + if (dpaa2_eth_has_pause_support(priv)) { + err = set_pause(priv); + if (err) + goto close; + } + priv->cls_rules = devm_kzalloc(dev, sizeof(struct dpaa2_eth_cls_rule) * dpaa2_eth_fs_count(priv), GFP_KERNEL); if (!priv->cls_rules) @@ -2529,7 +2601,6 @@ static int setup_rx_flow(struct dpaa2_eth_priv *priv, struct device *dev = priv->net_dev->dev.parent; struct dpni_queue queue; struct dpni_queue_id qid; - struct dpni_taildrop td; int err; err = dpni_get_queue(priv->mc_io, 0, priv->mc_token, @@ -2554,15 +2625,6 @@ static int setup_rx_flow(struct dpaa2_eth_priv *priv, return err; } - td.enable = 1; - td.threshold = DPAA2_ETH_TAILDROP_THRESH; - err = dpni_set_taildrop(priv->mc_io, 0, priv->mc_token, DPNI_CP_QUEUE, - DPNI_QUEUE_RX, 0, fq->flowid, &td); - if (err) { - dev_err(dev, "dpni_set_threshold() failed\n"); - return err; - } - /* xdp_rxq setup */ err = xdp_rxq_info_reg(&fq->channel->xdp_rxq, priv->net_dev, fq->flowid); diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h index 9af18c24221f..8a0e65b3267f 100644 --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h @@ -392,6 +392,7 @@ struct dpaa2_eth_priv { struct dpaa2_eth_drv_stats __percpu *percpu_extras; u16 mc_token; + u8 rx_td_enabled; struct dpni_link_state link_state; bool do_link_poll; @@ -476,6 +477,12 @@ enum dpaa2_eth_rx_dist { #define DPAA2_ETH_DIST_L4DST BIT(8) #define DPAA2_ETH_DIST_ALL (~0ULL) +#define DPNI_PAUSE_VER_MAJOR 7 +#define DPNI_PAUSE_VER_MINOR 13 +#define dpaa2_eth_has_pause_support(priv) \ + (dpaa2_eth_cmp_dpni_ver((priv), DPNI_PAUSE_VER_MAJOR, \ + DPNI_PAUSE_VER_MINOR) >= 0) + static inline unsigned int dpaa2_eth_needed_headroom(struct dpaa2_eth_priv *priv, struct sk_buff *skb) diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c index 7b182f4b263c..93076fe01b45 100644 --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c @@ -78,71 +78,67 @@ static int dpaa2_eth_get_link_ksettings(struct net_device *net_dev, struct ethtool_link_ksettings *link_settings) { - struct dpni_link_state state = {0}; - int err = 0; struct dpaa2_eth_priv *priv = netdev_priv(net_dev); - err = dpni_get_link_state(priv->mc_io, 0, priv->mc_token, &state); - if (err) { - netdev_err(net_dev, "ERROR %d getting link state\n", err); - goto out; - } - - /* At the moment, we have no way of interrogating the DPMAC - * from the DPNI side - and for that matter there may exist - * no DPMAC at all. So for now we just don't report anything - * beyond the DPNI attributes. - */ - if (state.options & DPNI_LINK_OPT_AUTONEG) - link_settings->base.autoneg = AUTONEG_ENABLE; - if (!(state.options & DPNI_LINK_OPT_HALF_DUPLEX)) + link_settings->base.autoneg = AUTONEG_DISABLE; + if (!(priv->link_state.options & DPNI_LINK_OPT_HALF_DUPLEX)) link_settings->base.duplex = DUPLEX_FULL; - link_settings->base.speed = state.rate; + link_settings->base.speed = priv->link_state.rate; -out: - return err; + return 0; } -#define DPNI_DYNAMIC_LINK_SET_VER_MAJOR 7 -#define DPNI_DYNAMIC_LINK_SET_VER_MINOR 1 -static int -dpaa2_eth_set_link_ksettings(struct net_device *net_dev, - const struct ethtool_link_ksettings *link_settings) +static void dpaa2_eth_get_pauseparam(struct net_device *net_dev, + struct ethtool_pauseparam *pause) { - struct dpni_link_cfg cfg = {0}; struct dpaa2_eth_priv *priv = netdev_priv(net_dev); - int err = 0; + u64 link_options = priv->link_state.options; - /* If using an older MC version, the DPNI must be down - * in order to be able to change link settings. Taking steps to let - * the user know that. - */ - if (dpaa2_eth_cmp_dpni_ver(priv, DPNI_DYNAMIC_LINK_SET_VER_MAJOR, - DPNI_DYNAMIC_LINK_SET_VER_MINOR) < 0) { - if (netif_running(net_dev)) { - netdev_info(net_dev, "Interface must be brought down first.\n"); - return -EACCES; - } + pause->rx_pause = !!(link_options & DPNI_LINK_OPT_PAUSE); + pause->tx_pause = pause->rx_pause ^ + !!(link_options & DPNI_LINK_OPT_ASYM_PAUSE); + pause->autoneg = AUTONEG_DISABLE; +} + +static int dpaa2_eth_set_pauseparam(struct net_device *net_dev, + struct ethtool_pauseparam *pause) +{ + struct dpaa2_eth_priv *priv = netdev_priv(net_dev); + struct dpni_link_cfg cfg = {0}; + int err; + + if (!dpaa2_eth_has_pause_support(priv)) { + netdev_info(net_dev, "No pause frame support for DPNI version < %d.%d\n", + DPNI_PAUSE_VER_MAJOR, DPNI_PAUSE_VER_MINOR); + return -EOPNOTSUPP; } - cfg.rate = link_settings->base.speed; - if (link_settings->base.autoneg == AUTONEG_ENABLE) - cfg.options |= DPNI_LINK_OPT_AUTONEG; + if (pause->autoneg) + return -EOPNOTSUPP; + + cfg.rate = priv->link_state.rate; + cfg.options = priv->link_state.options; + if (pause->rx_pause) + cfg.options |= DPNI_LINK_OPT_PAUSE; else - cfg.options &= ~DPNI_LINK_OPT_AUTONEG; - if (link_settings->base.duplex == DUPLEX_HALF) - cfg.options |= DPNI_LINK_OPT_HALF_DUPLEX; + cfg.options &= ~DPNI_LINK_OPT_PAUSE; + if (!!pause->rx_pause ^ !!pause->tx_pause) + cfg.options |= DPNI_LINK_OPT_ASYM_PAUSE; else - cfg.options &= ~DPNI_LINK_OPT_HALF_DUPLEX; + cfg.options &= ~DPNI_LINK_OPT_ASYM_PAUSE; + + if (cfg.options == priv->link_state.options) + return 0; err = dpni_set_link_cfg(priv->mc_io, 0, priv->mc_token, &cfg); - if (err) - /* ethtool will be loud enough if we return an error; no point - * in putting our own error message on the console by default - */ - netdev_dbg(net_dev, "ERROR %d setting link cfg\n", err); + if (err) { + netdev_err(net_dev, "dpni_set_link_state failed\n"); + return err; + } - return err; + priv->link_state.options = cfg.options; + + return 0; } static void dpaa2_eth_get_strings(struct net_device *netdev, u32 stringset, @@ -721,7 +717,8 @@ const struct ethtool_ops dpaa2_ethtool_ops = { .get_drvinfo = dpaa2_eth_get_drvinfo, .get_link = ethtool_op_get_link, .get_link_ksettings = dpaa2_eth_get_link_ksettings, - .set_link_ksettings = dpaa2_eth_set_link_ksettings, + .get_pauseparam = dpaa2_eth_get_pauseparam, + .set_pauseparam = dpaa2_eth_set_pauseparam, .get_sset_count = dpaa2_eth_get_sset_count, .get_ethtool_stats = dpaa2_eth_get_ethtool_stats, .get_strings = dpaa2_eth_get_strings, diff --git a/drivers/net/ethernet/freescale/dpaa2/dpni-cmd.h b/drivers/net/ethernet/freescale/dpaa2/dpni-cmd.h index 7b44d7d9b19a..d9b6918807af 100644 --- a/drivers/net/ethernet/freescale/dpaa2/dpni-cmd.h +++ b/drivers/net/ethernet/freescale/dpaa2/dpni-cmd.h @@ -84,6 +84,7 @@ #define DPNI_CMDID_SET_RX_FS_DIST DPNI_CMD(0x273) #define DPNI_CMDID_SET_RX_HASH_DIST DPNI_CMD(0x274) +#define DPNI_CMDID_GET_LINK_CFG DPNI_CMD(0x278) /* Macros for accessing command fields smaller than 1byte */ #define DPNI_MASK(field) \ @@ -284,7 +285,7 @@ struct dpni_rsp_get_statistics { __le64 counter[DPNI_STATISTICS_CNT]; }; -struct dpni_cmd_set_link_cfg { +struct dpni_cmd_link_cfg { /* cmd word 0 */ __le64 pad0; /* cmd word 1 */ diff --git a/drivers/net/ethernet/freescale/dpaa2/dpni.c b/drivers/net/ethernet/freescale/dpaa2/dpni.c index 220dfc806a24..05e30893dee6 100644 --- a/drivers/net/ethernet/freescale/dpaa2/dpni.c +++ b/drivers/net/ethernet/freescale/dpaa2/dpni.c @@ -838,13 +838,13 @@ int dpni_set_link_cfg(struct fsl_mc_io *mc_io, const struct dpni_link_cfg *cfg) { struct fsl_mc_command cmd = { 0 }; - struct dpni_cmd_set_link_cfg *cmd_params; + struct dpni_cmd_link_cfg *cmd_params; /* prepare command */ cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_LINK_CFG, cmd_flags, token); - cmd_params = (struct dpni_cmd_set_link_cfg *)cmd.params; + cmd_params = (struct dpni_cmd_link_cfg *)cmd.params; cmd_params->rate = cpu_to_le32(cfg->rate); cmd_params->options = cpu_to_le64(cfg->options); @@ -853,6 +853,42 @@ int dpni_set_link_cfg(struct fsl_mc_io *mc_io, } /** + * dpni_get_link_cfg() - return the link configuration + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @cfg: Link configuration from dpni object + * + * Return: '0' on Success; Error code otherwise. + */ +int dpni_get_link_cfg(struct fsl_mc_io *mc_io, + u32 cmd_flags, + u16 token, + struct dpni_link_cfg *cfg) +{ + struct fsl_mc_command cmd = { 0 }; + struct dpni_cmd_link_cfg *rsp_params; + int err; + + /* prepare command */ + cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_LINK_CFG, + cmd_flags, + token); + + /* send command to mc*/ + err = mc_send_command(mc_io, &cmd); + if (err) + return err; + + /* retrieve response parameters */ + rsp_params = (struct dpni_cmd_link_cfg *)cmd.params; + cfg->rate = le32_to_cpu(rsp_params->rate); + cfg->options = le64_to_cpu(rsp_params->options); + + return err; +} + +/** * dpni_get_link_state() - Return the link state (either up or down) * @mc_io: Pointer to MC portal's I/O object * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' diff --git a/drivers/net/ethernet/freescale/dpaa2/dpni.h b/drivers/net/ethernet/freescale/dpaa2/dpni.h index a521242e2353..3e8fc6c7a8da 100644 --- a/drivers/net/ethernet/freescale/dpaa2/dpni.h +++ b/drivers/net/ethernet/freescale/dpaa2/dpni.h @@ -485,6 +485,11 @@ int dpni_set_link_cfg(struct fsl_mc_io *mc_io, u16 token, const struct dpni_link_cfg *cfg); +int dpni_get_link_cfg(struct fsl_mc_io *mc_io, + u32 cmd_flags, + u16 token, + struct dpni_link_cfg *cfg); + /** * struct dpni_link_state - Structure representing DPNI link state * @rate: Rate diff --git a/drivers/net/ethernet/freescale/enetc/Kconfig b/drivers/net/ethernet/freescale/enetc/Kconfig index 04a59db03f2b..c219587bd334 100644 --- a/drivers/net/ethernet/freescale/enetc/Kconfig +++ b/drivers/net/ethernet/freescale/enetc/Kconfig @@ -20,6 +20,15 @@ config FSL_ENETC_VF If compiled as module (M), the module name is fsl-enetc-vf. +config FSL_ENETC_MDIO + tristate "ENETC MDIO driver" + depends on PCI && (ARCH_LAYERSCAPE || COMPILE_TEST) + help + This driver supports NXP ENETC Central MDIO controller as a PCIe + physical function (PF) device. + + If compiled as module (M), the module name is fsl-enetc-mdio. + config FSL_ENETC_PTP_CLOCK tristate "ENETC PTP clock driver" depends on PTP_1588_CLOCK_QORIQ && (FSL_ENETC || FSL_ENETC_VF) diff --git a/drivers/net/ethernet/freescale/enetc/Makefile b/drivers/net/ethernet/freescale/enetc/Makefile index 7139e414dccf..d200c27c3bf6 100644 --- a/drivers/net/ethernet/freescale/enetc/Makefile +++ b/drivers/net/ethernet/freescale/enetc/Makefile @@ -1,19 +1,16 @@ # SPDX-License-Identifier: GPL-2.0 + +common-objs := enetc.o enetc_cbdr.o enetc_ethtool.o + obj-$(CONFIG_FSL_ENETC) += fsl-enetc.o -fsl-enetc-$(CONFIG_FSL_ENETC) += enetc.o enetc_cbdr.o enetc_ethtool.o \ - enetc_mdio.o +fsl-enetc-y := enetc_pf.o enetc_mdio.o $(common-objs) fsl-enetc-$(CONFIG_PCI_IOV) += enetc_msg.o -fsl-enetc-objs := enetc_pf.o $(fsl-enetc-y) obj-$(CONFIG_FSL_ENETC_VF) += fsl-enetc-vf.o +fsl-enetc-vf-y := enetc_vf.o $(common-objs) -ifeq ($(CONFIG_FSL_ENETC)$(CONFIG_FSL_ENETC_VF), yy) -fsl-enetc-vf-objs := enetc_vf.o -else -fsl-enetc-vf-$(CONFIG_FSL_ENETC_VF) += enetc.o enetc_cbdr.o \ - enetc_ethtool.o -fsl-enetc-vf-objs := enetc_vf.o $(fsl-enetc-vf-y) -endif +obj-$(CONFIG_FSL_ENETC_MDIO) += fsl-enetc-mdio.o +fsl-enetc-mdio-y := enetc_pci_mdio.o enetc_mdio.o obj-$(CONFIG_FSL_ENETC_PTP_CLOCK) += fsl-enetc-ptp.o -fsl-enetc-ptp-$(CONFIG_FSL_ENETC_PTP_CLOCK) += enetc_ptp.o +fsl-enetc-ptp-y := enetc_ptp.o diff --git a/drivers/net/ethernet/freescale/enetc/enetc.c b/drivers/net/ethernet/freescale/enetc/enetc.c index 223709443ea4..b6ff89307409 100644 --- a/drivers/net/ethernet/freescale/enetc/enetc.c +++ b/drivers/net/ethernet/freescale/enetc/enetc.c @@ -110,7 +110,7 @@ static int enetc_map_tx_buffs(struct enetc_bdr *tx_ring, struct sk_buff *skb, int active_offloads) { struct enetc_tx_swbd *tx_swbd; - struct skb_frag_struct *frag; + skb_frag_t *frag; int len = skb_headlen(skb); union enetc_tx_bd temp_bd; union enetc_tx_bd *txbd; diff --git a/drivers/net/ethernet/freescale/enetc/enetc_mdio.c b/drivers/net/ethernet/freescale/enetc/enetc_mdio.c index 77b9cd10ba2b..149883c8f0b8 100644 --- a/drivers/net/ethernet/freescale/enetc/enetc_mdio.c +++ b/drivers/net/ethernet/freescale/enetc/enetc_mdio.c @@ -6,18 +6,20 @@ #include <linux/iopoll.h> #include <linux/of.h> -#include "enetc_pf.h" +#include "enetc_mdio.h" -struct enetc_mdio_regs { - u32 mdio_cfg; /* MDIO configuration and status */ - u32 mdio_ctl; /* MDIO control */ - u32 mdio_data; /* MDIO data */ - u32 mdio_addr; /* MDIO address */ -}; +#define ENETC_MDIO_REG_OFFSET 0x1c00 +#define ENETC_MDIO_CFG 0x0 /* MDIO configuration and status */ +#define ENETC_MDIO_CTL 0x4 /* MDIO control */ +#define ENETC_MDIO_DATA 0x8 /* MDIO data */ +#define ENETC_MDIO_ADDR 0xc /* MDIO address */ -#define bus_to_enetc_regs(bus) (struct enetc_mdio_regs __iomem *)((bus)->priv) +#define enetc_mdio_rd(hw, off) \ + enetc_port_rd(hw, ENETC_##off + ENETC_MDIO_REG_OFFSET) +#define enetc_mdio_wr(hw, off, val) \ + enetc_port_wr(hw, ENETC_##off + ENETC_MDIO_REG_OFFSET, val) +#define enetc_mdio_rd_reg(off) enetc_mdio_rd(hw, off) -#define ENETC_MDIO_REG_OFFSET 0x1c00 #define ENETC_MDC_DIV 258 #define MDIO_CFG_CLKDIV(x) ((((x) >> 1) & 0xff) << 8) @@ -33,18 +35,18 @@ struct enetc_mdio_regs { #define MDIO_DATA(x) ((x) & 0xffff) #define TIMEOUT 1000 -static int enetc_mdio_wait_complete(struct enetc_mdio_regs __iomem *regs) +static int enetc_mdio_wait_complete(struct enetc_hw *hw) { u32 val; - return readx_poll_timeout(enetc_rd_reg, ®s->mdio_cfg, val, + return readx_poll_timeout(enetc_mdio_rd_reg, MDIO_CFG, val, !(val & MDIO_CFG_BSY), 10, 10 * TIMEOUT); } -static int enetc_mdio_write(struct mii_bus *bus, int phy_id, int regnum, - u16 value) +int enetc_mdio_write(struct mii_bus *bus, int phy_id, int regnum, u16 value) { - struct enetc_mdio_regs __iomem *regs = bus_to_enetc_regs(bus); + struct enetc_mdio_priv *mdio_priv = bus->priv; + struct enetc_hw *hw = mdio_priv->hw; u32 mdio_ctl, mdio_cfg; u16 dev_addr; int ret; @@ -59,38 +61,39 @@ static int enetc_mdio_write(struct mii_bus *bus, int phy_id, int regnum, mdio_cfg &= ~MDIO_CFG_ENC45; } - enetc_wr_reg(®s->mdio_cfg, mdio_cfg); + enetc_mdio_wr(hw, MDIO_CFG, mdio_cfg); - ret = enetc_mdio_wait_complete(regs); + ret = enetc_mdio_wait_complete(hw); if (ret) return ret; /* set port and dev addr */ mdio_ctl = MDIO_CTL_PORT_ADDR(phy_id) | MDIO_CTL_DEV_ADDR(dev_addr); - enetc_wr_reg(®s->mdio_ctl, mdio_ctl); + enetc_mdio_wr(hw, MDIO_CTL, mdio_ctl); /* set the register address */ if (regnum & MII_ADDR_C45) { - enetc_wr_reg(®s->mdio_addr, regnum & 0xffff); + enetc_mdio_wr(hw, MDIO_ADDR, regnum & 0xffff); - ret = enetc_mdio_wait_complete(regs); + ret = enetc_mdio_wait_complete(hw); if (ret) return ret; } /* write the value */ - enetc_wr_reg(®s->mdio_data, MDIO_DATA(value)); + enetc_mdio_wr(hw, MDIO_DATA, MDIO_DATA(value)); - ret = enetc_mdio_wait_complete(regs); + ret = enetc_mdio_wait_complete(hw); if (ret) return ret; return 0; } -static int enetc_mdio_read(struct mii_bus *bus, int phy_id, int regnum) +int enetc_mdio_read(struct mii_bus *bus, int phy_id, int regnum) { - struct enetc_mdio_regs __iomem *regs = bus_to_enetc_regs(bus); + struct enetc_mdio_priv *mdio_priv = bus->priv; + struct enetc_hw *hw = mdio_priv->hw; u32 mdio_ctl, mdio_cfg; u16 dev_addr, value; int ret; @@ -104,41 +107,41 @@ static int enetc_mdio_read(struct mii_bus *bus, int phy_id, int regnum) mdio_cfg &= ~MDIO_CFG_ENC45; } - enetc_wr_reg(®s->mdio_cfg, mdio_cfg); + enetc_mdio_wr(hw, MDIO_CFG, mdio_cfg); - ret = enetc_mdio_wait_complete(regs); + ret = enetc_mdio_wait_complete(hw); if (ret) return ret; /* set port and device addr */ mdio_ctl = MDIO_CTL_PORT_ADDR(phy_id) | MDIO_CTL_DEV_ADDR(dev_addr); - enetc_wr_reg(®s->mdio_ctl, mdio_ctl); + enetc_mdio_wr(hw, MDIO_CTL, mdio_ctl); /* set the register address */ if (regnum & MII_ADDR_C45) { - enetc_wr_reg(®s->mdio_addr, regnum & 0xffff); + enetc_mdio_wr(hw, MDIO_ADDR, regnum & 0xffff); - ret = enetc_mdio_wait_complete(regs); + ret = enetc_mdio_wait_complete(hw); if (ret) return ret; } /* initiate the read */ - enetc_wr_reg(®s->mdio_ctl, mdio_ctl | MDIO_CTL_READ); + enetc_mdio_wr(hw, MDIO_CTL, mdio_ctl | MDIO_CTL_READ); - ret = enetc_mdio_wait_complete(regs); + ret = enetc_mdio_wait_complete(hw); if (ret) return ret; /* return all Fs if nothing was there */ - if (enetc_rd_reg(®s->mdio_cfg) & MDIO_CFG_RD_ER) { + if (enetc_mdio_rd(hw, MDIO_CFG) & MDIO_CFG_RD_ER) { dev_dbg(&bus->dev, "Error while reading PHY%d reg at %d.%hhu\n", phy_id, dev_addr, regnum); return 0xffff; } - value = enetc_rd_reg(®s->mdio_data) & 0xffff; + value = enetc_mdio_rd(hw, MDIO_DATA) & 0xffff; return value; } @@ -146,12 +149,12 @@ static int enetc_mdio_read(struct mii_bus *bus, int phy_id, int regnum) int enetc_mdio_probe(struct enetc_pf *pf) { struct device *dev = &pf->si->pdev->dev; - struct enetc_mdio_regs __iomem *regs; + struct enetc_mdio_priv *mdio_priv; struct device_node *np; struct mii_bus *bus; - int ret; + int err; - bus = mdiobus_alloc_size(sizeof(regs)); + bus = devm_mdiobus_alloc_size(dev, sizeof(*mdio_priv)); if (!bus) return -ENOMEM; @@ -159,41 +162,31 @@ int enetc_mdio_probe(struct enetc_pf *pf) bus->read = enetc_mdio_read; bus->write = enetc_mdio_write; bus->parent = dev; + mdio_priv = bus->priv; + mdio_priv->hw = &pf->si->hw; snprintf(bus->id, MII_BUS_ID_SIZE, "%s", dev_name(dev)); - /* store the enetc mdio base address for this bus */ - regs = pf->si->hw.port + ENETC_MDIO_REG_OFFSET; - bus->priv = regs; - np = of_get_child_by_name(dev->of_node, "mdio"); if (!np) { dev_err(dev, "MDIO node missing\n"); - ret = -EINVAL; - goto err_registration; + return -EINVAL; } - ret = of_mdiobus_register(bus, np); - if (ret) { + err = of_mdiobus_register(bus, np); + if (err) { of_node_put(np); dev_err(dev, "cannot register MDIO bus\n"); - goto err_registration; + return err; } of_node_put(np); pf->mdio = bus; return 0; - -err_registration: - mdiobus_free(bus); - - return ret; } void enetc_mdio_remove(struct enetc_pf *pf) { - if (pf->mdio) { + if (pf->mdio) mdiobus_unregister(pf->mdio); - mdiobus_free(pf->mdio); - } } diff --git a/drivers/net/ethernet/freescale/enetc/enetc_mdio.h b/drivers/net/ethernet/freescale/enetc/enetc_mdio.h new file mode 100644 index 000000000000..60c9a3889824 --- /dev/null +++ b/drivers/net/ethernet/freescale/enetc/enetc_mdio.h @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */ +/* Copyright 2019 NXP */ + +#include <linux/phy.h> +#include "enetc_pf.h" + +struct enetc_mdio_priv { + struct enetc_hw *hw; +}; + +int enetc_mdio_write(struct mii_bus *bus, int phy_id, int regnum, u16 value); +int enetc_mdio_read(struct mii_bus *bus, int phy_id, int regnum); diff --git a/drivers/net/ethernet/freescale/enetc/enetc_pci_mdio.c b/drivers/net/ethernet/freescale/enetc/enetc_pci_mdio.c new file mode 100644 index 000000000000..fbd41ce01f06 --- /dev/null +++ b/drivers/net/ethernet/freescale/enetc/enetc_pci_mdio.c @@ -0,0 +1,101 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) +/* Copyright 2019 NXP */ +#include <linux/of_mdio.h> +#include "enetc_mdio.h" + +#define ENETC_MDIO_DEV_ID 0xee01 +#define ENETC_MDIO_DEV_NAME "FSL PCIe IE Central MDIO" +#define ENETC_MDIO_BUS_NAME ENETC_MDIO_DEV_NAME " Bus" +#define ENETC_MDIO_DRV_NAME ENETC_MDIO_DEV_NAME " driver" + +static int enetc_pci_mdio_probe(struct pci_dev *pdev, + const struct pci_device_id *ent) +{ + struct enetc_mdio_priv *mdio_priv; + struct device *dev = &pdev->dev; + struct enetc_hw *hw; + struct mii_bus *bus; + int err; + + hw = devm_kzalloc(dev, sizeof(*hw), GFP_KERNEL); + if (!hw) + return -ENOMEM; + + bus = devm_mdiobus_alloc_size(dev, sizeof(*mdio_priv)); + if (!bus) + return -ENOMEM; + + bus->name = ENETC_MDIO_BUS_NAME; + bus->read = enetc_mdio_read; + bus->write = enetc_mdio_write; + bus->parent = dev; + mdio_priv = bus->priv; + mdio_priv->hw = hw; + snprintf(bus->id, MII_BUS_ID_SIZE, "%s", dev_name(dev)); + + pcie_flr(pdev); + err = pci_enable_device_mem(pdev); + if (err) { + dev_err(dev, "device enable failed\n"); + return err; + } + + err = pci_request_region(pdev, 0, KBUILD_MODNAME); + if (err) { + dev_err(dev, "pci_request_region failed\n"); + goto err_pci_mem_reg; + } + + hw->port = pci_iomap(pdev, 0, 0); + if (!hw->port) { + err = -ENXIO; + dev_err(dev, "iomap failed\n"); + goto err_ioremap; + } + + err = of_mdiobus_register(bus, dev->of_node); + if (err) + goto err_mdiobus_reg; + + pci_set_drvdata(pdev, bus); + + return 0; + +err_mdiobus_reg: + iounmap(mdio_priv->hw->port); +err_ioremap: + pci_release_mem_regions(pdev); +err_pci_mem_reg: + pci_disable_device(pdev); + + return err; +} + +static void enetc_pci_mdio_remove(struct pci_dev *pdev) +{ + struct mii_bus *bus = pci_get_drvdata(pdev); + struct enetc_mdio_priv *mdio_priv; + + mdiobus_unregister(bus); + mdio_priv = bus->priv; + iounmap(mdio_priv->hw->port); + pci_release_mem_regions(pdev); + pci_disable_device(pdev); +} + +static const struct pci_device_id enetc_pci_mdio_id_table[] = { + { PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, ENETC_MDIO_DEV_ID) }, + { 0, } /* End of table. */ +}; +MODULE_DEVICE_TABLE(pci, enetc_pci_mdio_id_table); + +static struct pci_driver enetc_pci_mdio_driver = { + .name = KBUILD_MODNAME, + .id_table = enetc_pci_mdio_id_table, + .probe = enetc_pci_mdio_probe, + .remove = enetc_pci_mdio_remove, +}; +module_pci_driver(enetc_pci_mdio_driver); + +MODULE_DESCRIPTION(ENETC_MDIO_DRV_NAME); +MODULE_LICENSE("Dual BSD/GPL"); diff --git a/drivers/net/ethernet/freescale/enetc/enetc_pf.c b/drivers/net/ethernet/freescale/enetc/enetc_pf.c index 258b3cb38a6f..7d6513ff8507 100644 --- a/drivers/net/ethernet/freescale/enetc/enetc_pf.c +++ b/drivers/net/ethernet/freescale/enetc/enetc_pf.c @@ -750,6 +750,7 @@ static int enetc_of_get_phy(struct enetc_ndev_priv *priv) { struct enetc_pf *pf = enetc_si_priv(priv->si); struct device_node *np = priv->dev->of_node; + struct device_node *mdio_np; int err; if (!np) { @@ -773,7 +774,9 @@ static int enetc_of_get_phy(struct enetc_ndev_priv *priv) priv->phy_node = of_node_get(np); } - if (!of_phy_is_fixed_link(np)) { + mdio_np = of_get_child_by_name(np, "mdio"); + if (mdio_np) { + of_node_put(mdio_np); err = enetc_mdio_probe(pf); if (err) { of_node_put(priv->phy_node); diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index e5610a4da539..d4d4c72adf49 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -208,8 +208,11 @@ MODULE_PARM_DESC(macaddr, "FEC Ethernet MAC address"); /* FEC MII MMFR bits definition */ #define FEC_MMFR_ST (1 << 30) +#define FEC_MMFR_ST_C45 (0) #define FEC_MMFR_OP_READ (2 << 28) +#define FEC_MMFR_OP_READ_C45 (3 << 28) #define FEC_MMFR_OP_WRITE (1 << 28) +#define FEC_MMFR_OP_ADDR_WRITE (0) #define FEC_MMFR_PA(v) ((v & 0x1f) << 23) #define FEC_MMFR_RA(v) ((v & 0x1f) << 18) #define FEC_MMFR_TA (2 << 16) @@ -365,7 +368,7 @@ fec_enet_txq_submit_frag_skb(struct fec_enet_priv_tx_q *txq, status = fec16_to_cpu(bdp->cbd_sc); status &= ~BD_ENET_TX_STATS; status |= (BD_ENET_TX_TC | BD_ENET_TX_READY); - frag_len = skb_shinfo(skb)->frags[frag].size; + frag_len = skb_frag_size(&skb_shinfo(skb)->frags[frag]); /* Handle the last BD specially */ if (frag == nr_frags - 1) { @@ -387,7 +390,7 @@ fec_enet_txq_submit_frag_skb(struct fec_enet_priv_tx_q *txq, ebdp->cbd_esc = cpu_to_fec32(estatus); } - bufaddr = page_address(this_frag->page.p) + this_frag->page_offset; + bufaddr = skb_frag_address(this_frag); index = fec_enet_get_bd_index(bdp, &txq->bd); if (((unsigned long) bufaddr) & fep->tx_align || @@ -1767,7 +1770,8 @@ static int fec_enet_mdio_read(struct mii_bus *bus, int mii_id, int regnum) struct fec_enet_private *fep = bus->priv; struct device *dev = &fep->pdev->dev; unsigned long time_left; - int ret = 0; + int ret = 0, frame_start, frame_addr, frame_op; + bool is_c45 = !!(regnum & MII_ADDR_C45); ret = pm_runtime_get_sync(dev); if (ret < 0) @@ -1775,9 +1779,37 @@ static int fec_enet_mdio_read(struct mii_bus *bus, int mii_id, int regnum) reinit_completion(&fep->mdio_done); + if (is_c45) { + frame_start = FEC_MMFR_ST_C45; + + /* write address */ + frame_addr = (regnum >> 16); + writel(frame_start | FEC_MMFR_OP_ADDR_WRITE | + FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(frame_addr) | + FEC_MMFR_TA | (regnum & 0xFFFF), + fep->hwp + FEC_MII_DATA); + + /* wait for end of transfer */ + time_left = wait_for_completion_timeout(&fep->mdio_done, + usecs_to_jiffies(FEC_MII_TIMEOUT)); + if (time_left == 0) { + netdev_err(fep->netdev, "MDIO address write timeout\n"); + ret = -ETIMEDOUT; + goto out; + } + + frame_op = FEC_MMFR_OP_READ_C45; + + } else { + /* C22 read */ + frame_op = FEC_MMFR_OP_READ; + frame_start = FEC_MMFR_ST; + frame_addr = regnum; + } + /* start a read op */ - writel(FEC_MMFR_ST | FEC_MMFR_OP_READ | - FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(regnum) | + writel(frame_start | frame_op | + FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(frame_addr) | FEC_MMFR_TA, fep->hwp + FEC_MII_DATA); /* wait for end of transfer */ @@ -1804,7 +1836,8 @@ static int fec_enet_mdio_write(struct mii_bus *bus, int mii_id, int regnum, struct fec_enet_private *fep = bus->priv; struct device *dev = &fep->pdev->dev; unsigned long time_left; - int ret; + int ret, frame_start, frame_addr; + bool is_c45 = !!(regnum & MII_ADDR_C45); ret = pm_runtime_get_sync(dev); if (ret < 0) @@ -1814,9 +1847,33 @@ static int fec_enet_mdio_write(struct mii_bus *bus, int mii_id, int regnum, reinit_completion(&fep->mdio_done); + if (is_c45) { + frame_start = FEC_MMFR_ST_C45; + + /* write address */ + frame_addr = (regnum >> 16); + writel(frame_start | FEC_MMFR_OP_ADDR_WRITE | + FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(frame_addr) | + FEC_MMFR_TA | (regnum & 0xFFFF), + fep->hwp + FEC_MII_DATA); + + /* wait for end of transfer */ + time_left = wait_for_completion_timeout(&fep->mdio_done, + usecs_to_jiffies(FEC_MII_TIMEOUT)); + if (time_left == 0) { + netdev_err(fep->netdev, "MDIO address write timeout\n"); + ret = -ETIMEDOUT; + goto out; + } + } else { + /* C22 write */ + frame_start = FEC_MMFR_ST; + frame_addr = regnum; + } + /* start a write op */ - writel(FEC_MMFR_ST | FEC_MMFR_OP_WRITE | - FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(regnum) | + writel(frame_start | FEC_MMFR_OP_WRITE | + FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(frame_addr) | FEC_MMFR_TA | FEC_MMFR_DATA(value), fep->hwp + FEC_MII_DATA); @@ -1828,6 +1885,7 @@ static int fec_enet_mdio_write(struct mii_bus *bus, int mii_id, int regnum, ret = -ETIMEDOUT; } +out: pm_runtime_mark_last_busy(dev); pm_runtime_put_autosuspend(dev); @@ -3338,7 +3396,6 @@ fec_probe(struct platform_device *pdev) struct fec_platform_data *pdata; struct net_device *ndev; int i, irq, ret = 0; - struct resource *r; const struct of_device_id *of_id; static int dev_id; struct device_node *np = pdev->dev.of_node, *phy_node; @@ -3378,8 +3435,7 @@ fec_probe(struct platform_device *pdev) /* Select default pin state */ pinctrl_pm_select_default_state(&pdev->dev); - r = platform_get_resource(pdev, IORESOURCE_MEM, 0); - fep->hwp = devm_ioremap_resource(&pdev->dev, r); + fep->hwp = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(fep->hwp)) { ret = PTR_ERR(fep->hwp); goto failed_ioremap; diff --git a/drivers/net/ethernet/freescale/fs_enet/fs_enet-main.c b/drivers/net/ethernet/freescale/fs_enet/fs_enet-main.c index 5fad73b2e123..3981c06f082f 100644 --- a/drivers/net/ethernet/freescale/fs_enet/fs_enet-main.c +++ b/drivers/net/ethernet/freescale/fs_enet/fs_enet-main.c @@ -501,7 +501,7 @@ fs_enet_start_xmit(struct sk_buff *skb, struct net_device *dev) nr_frags = skb_shinfo(skb)->nr_frags; frag = skb_shinfo(skb)->frags; for (i = 0; i < nr_frags; i++, frag++) { - if (!IS_ALIGNED(frag->page_offset, 4)) { + if (!IS_ALIGNED(skb_frag_off(frag), 4)) { is_aligned = 0; break; } diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c index 7ea19e173339..412c0340fed9 100644 --- a/drivers/net/ethernet/freescale/gianfar.c +++ b/drivers/net/ethernet/freescale/gianfar.c @@ -2005,8 +2005,7 @@ static void free_skb_rx_queue(struct gfar_priv_rx_q *rx_queue) struct rxbd8 *rxbdp = rx_queue->rx_bd_base; - if (rx_queue->skb) - dev_kfree_skb(rx_queue->skb); + dev_kfree_skb(rx_queue->skb); for (i = 0; i < rx_queue->rx_ring_size; i++) { struct gfar_rx_buff *rxb = &rx_queue->rx_buff[i]; |