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Diffstat (limited to 'linux/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c')
-rw-r--r--linux/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c184
1 files changed, 149 insertions, 35 deletions
diff --git a/linux/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c b/linux/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
index f8ed4516..be6d0d7c 100644
--- a/linux/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
+++ b/linux/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
@@ -143,6 +143,13 @@ MODULE_PARM_DESC(tx_timeout, "The Tx timeout in ms");
/* L4 Type field: TCP */
#define FM_L4_PARSE_RESULT_TCP 0x20
+/* FD status field indicating whether the FM Parser has attempted to validate
+ * the L4 csum of the frame.
+ * Note that having this bit set doesn't necessarily imply that the checksum
+ * is valid. One would have to check the parse results to find that out.
+ */
+#define FM_FD_STAT_L4CV 0x00000004
+
#define DPAA_SGT_MAX_ENTRIES 16 /* maximum number of entries in SG Table */
#define DPAA_BUFF_RELEASE_MAX 8 /* maximum number of buffers released at once */
@@ -267,6 +274,7 @@ static int dpaa_netdev_init(struct net_device *net_dev,
* For conformity, we'll still declare GSO explicitly.
*/
net_dev->features |= NETIF_F_GSO;
+ net_dev->features |= NETIF_F_RXCSUM;
net_dev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
/* we do not want shared skbs on TX */
@@ -372,6 +380,45 @@ static void dpaa_get_stats64(struct net_device *net_dev,
}
}
+static int dpaa_setup_tc(struct net_device *net_dev, u32 handle, __be16 proto,
+ struct tc_to_netdev *tc)
+{
+ struct dpaa_priv *priv = netdev_priv(net_dev);
+ u8 num_tc;
+ int i;
+
+ if (tc->type != TC_SETUP_MQPRIO)
+ return -EINVAL;
+
+ tc->mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS;
+ num_tc = tc->mqprio->num_tc;
+
+ if (num_tc == priv->num_tc)
+ return 0;
+
+ if (!num_tc) {
+ netdev_reset_tc(net_dev);
+ goto out;
+ }
+
+ if (num_tc > DPAA_TC_NUM) {
+ netdev_err(net_dev, "Too many traffic classes: max %d supported.\n",
+ DPAA_TC_NUM);
+ return -EINVAL;
+ }
+
+ netdev_set_num_tc(net_dev, num_tc);
+
+ for (i = 0; i < num_tc; i++)
+ netdev_set_tc_queue(net_dev, i, DPAA_TC_TXQ_NUM,
+ i * DPAA_TC_TXQ_NUM);
+
+out:
+ priv->num_tc = num_tc ? : 1;
+ netif_set_real_num_tx_queues(net_dev, priv->num_tc * DPAA_TC_TXQ_NUM);
+ return 0;
+}
+
static struct mac_device *dpaa_mac_dev_get(struct platform_device *pdev)
{
struct platform_device *of_dev;
@@ -596,16 +643,18 @@ static void dpaa_bps_free(struct dpaa_priv *priv)
/* Use multiple WQs for FQ assignment:
* - Tx Confirmation queues go to WQ1.
- * - Rx Error and Tx Error queues go to WQ2 (giving them a better chance
- * to be scheduled, in case there are many more FQs in WQ3).
- * - Rx Default and Tx queues go to WQ3 (no differentiation between
- * Rx and Tx traffic).
+ * - Rx Error and Tx Error queues go to WQ5 (giving them a better chance
+ * to be scheduled, in case there are many more FQs in WQ6).
+ * - Rx Default goes to WQ6.
+ * - Tx queues go to different WQs depending on their priority. Equal
+ * chunks of NR_CPUS queues go to WQ6 (lowest priority), WQ2, WQ1 and
+ * WQ0 (highest priority).
* This ensures that Tx-confirmed buffers are timely released. In particular,
* it avoids congestion on the Tx Confirm FQs, which can pile up PFDRs if they
* are greatly outnumbered by other FQs in the system, while
* dequeue scheduling is round-robin.
*/
-static inline void dpaa_assign_wq(struct dpaa_fq *fq)
+static inline void dpaa_assign_wq(struct dpaa_fq *fq, int idx)
{
switch (fq->fq_type) {
case FQ_TYPE_TX_CONFIRM:
@@ -614,11 +663,33 @@ static inline void dpaa_assign_wq(struct dpaa_fq *fq)
break;
case FQ_TYPE_RX_ERROR:
case FQ_TYPE_TX_ERROR:
- fq->wq = 2;
+ fq->wq = 5;
break;
case FQ_TYPE_RX_DEFAULT:
+ fq->wq = 6;
+ break;
case FQ_TYPE_TX:
- fq->wq = 3;
+ switch (idx / DPAA_TC_TXQ_NUM) {
+ case 0:
+ /* Low priority (best effort) */
+ fq->wq = 6;
+ break;
+ case 1:
+ /* Medium priority */
+ fq->wq = 2;
+ break;
+ case 2:
+ /* High priority */
+ fq->wq = 1;
+ break;
+ case 3:
+ /* Very high priority */
+ fq->wq = 0;
+ break;
+ default:
+ WARN(1, "Too many TX FQs: more than %d!\n",
+ DPAA_ETH_TXQ_NUM);
+ }
break;
default:
WARN(1, "Invalid FQ type %d for FQID %d!\n",
@@ -646,7 +717,7 @@ static struct dpaa_fq *dpaa_fq_alloc(struct device *dev,
}
for (i = 0; i < count; i++)
- dpaa_assign_wq(dpaa_fq + i);
+ dpaa_assign_wq(dpaa_fq + i, i);
return dpaa_fq;
}
@@ -968,7 +1039,7 @@ static int dpaa_fq_init(struct dpaa_fq *dpaa_fq, bool td_enable)
* Tx Confirmation FQs.
*/
if (dpaa_fq->fq_type == FQ_TYPE_TX_CONFIRM)
- initfq.fqd.fq_ctrl |= cpu_to_be16(QM_FQCTRL_HOLDACTIVE);
+ initfq.fqd.fq_ctrl |= cpu_to_be16(QM_FQCTRL_AVOIDBLOCK);
/* FQ placement */
initfq.we_mask |= cpu_to_be16(QM_INITFQ_WE_DESTWQ);
@@ -1058,7 +1129,8 @@ static int dpaa_fq_init(struct dpaa_fq *dpaa_fq, bool td_enable)
/* Initialization common to all ingress queues */
if (dpaa_fq->flags & QMAN_FQ_FLAG_NO_ENQUEUE) {
initfq.we_mask |= cpu_to_be16(QM_INITFQ_WE_CONTEXTA);
- initfq.fqd.fq_ctrl |= cpu_to_be16(QM_FQCTRL_HOLDACTIVE);
+ initfq.fqd.fq_ctrl |= cpu_to_be16(QM_FQCTRL_HOLDACTIVE |
+ QM_FQCTRL_CTXASTASHING);
initfq.fqd.context_a.stashing.exclusive =
QM_STASHING_EXCL_DATA | QM_STASHING_EXCL_CTX |
QM_STASHING_EXCL_ANNOTATION;
@@ -1138,9 +1210,9 @@ static int dpaa_fq_free(struct device *dev, struct list_head *list)
}
#endif /* __rtems__ */
-static void dpaa_eth_init_tx_port(struct fman_port *port, struct dpaa_fq *errq,
- struct dpaa_fq *defq,
- struct dpaa_buffer_layout *buf_layout)
+static int dpaa_eth_init_tx_port(struct fman_port *port, struct dpaa_fq *errq,
+ struct dpaa_fq *defq,
+ struct dpaa_buffer_layout *buf_layout)
{
struct fman_buffer_prefix_content buf_prefix_content;
struct fman_port_params params;
@@ -1159,23 +1231,29 @@ static void dpaa_eth_init_tx_port(struct fman_port *port, struct dpaa_fq *errq,
params.specific_params.non_rx_params.dflt_fqid = defq->fqid;
err = fman_port_config(port, &params);
- if (err)
+ if (err) {
pr_err("%s: fman_port_config failed\n", __func__);
+ return err;
+ }
err = fman_port_cfg_buf_prefix_content(port, &buf_prefix_content);
- if (err)
+ if (err) {
pr_err("%s: fman_port_cfg_buf_prefix_content failed\n",
__func__);
+ return err;
+ }
err = fman_port_init(port);
if (err)
pr_err("%s: fm_port_init failed\n", __func__);
+
+ return err;
}
-static void dpaa_eth_init_rx_port(struct fman_port *port, struct dpaa_bp **bps,
- size_t count, struct dpaa_fq *errq,
- struct dpaa_fq *defq,
- struct dpaa_buffer_layout *buf_layout)
+static int dpaa_eth_init_rx_port(struct fman_port *port, struct dpaa_bp **bps,
+ size_t count, struct dpaa_fq *errq,
+ struct dpaa_fq *defq,
+ struct dpaa_buffer_layout *buf_layout)
{
struct fman_buffer_prefix_content buf_prefix_content;
struct fman_port_rx_params *rx_p;
@@ -1203,32 +1281,44 @@ static void dpaa_eth_init_rx_port(struct fman_port *port, struct dpaa_bp **bps,
}
err = fman_port_config(port, &params);
- if (err)
+ if (err) {
pr_err("%s: fman_port_config failed\n", __func__);
+ return err;
+ }
err = fman_port_cfg_buf_prefix_content(port, &buf_prefix_content);
- if (err)
+ if (err) {
pr_err("%s: fman_port_cfg_buf_prefix_content failed\n",
__func__);
+ return err;
+ }
err = fman_port_init(port);
if (err)
pr_err("%s: fm_port_init failed\n", __func__);
+
+ return err;
}
-static void dpaa_eth_init_ports(struct mac_device *mac_dev,
- struct dpaa_bp **bps, size_t count,
- struct fm_port_fqs *port_fqs,
- struct dpaa_buffer_layout *buf_layout,
- struct device *dev)
+static int dpaa_eth_init_ports(struct mac_device *mac_dev,
+ struct dpaa_bp **bps, size_t count,
+ struct fm_port_fqs *port_fqs,
+ struct dpaa_buffer_layout *buf_layout,
+ struct device *dev)
{
struct fman_port *rxport = mac_dev->port[RX];
struct fman_port *txport = mac_dev->port[TX];
+ int err;
+
+ err = dpaa_eth_init_tx_port(txport, port_fqs->tx_errq,
+ port_fqs->tx_defq, &buf_layout[TX]);
+ if (err)
+ return err;
+
+ err = dpaa_eth_init_rx_port(rxport, bps, count, port_fqs->rx_errq,
+ port_fqs->rx_defq, &buf_layout[RX]);
- dpaa_eth_init_tx_port(txport, port_fqs->tx_errq,
- port_fqs->tx_defq, &buf_layout[TX]);
- dpaa_eth_init_rx_port(rxport, bps, count, port_fqs->rx_errq,
- port_fqs->rx_defq, &buf_layout[RX]);
+ return err;
}
static int dpaa_bman_release(const struct dpaa_bp *dpaa_bp,
@@ -1639,6 +1729,23 @@ static struct sk_buff *dpaa_cleanup_tx_fd(const struct dpaa_priv *priv,
return skb;
}
+static u8 rx_csum_offload(const struct dpaa_priv *priv, const struct qm_fd *fd)
+{
+ /* The parser has run and performed L4 checksum validation.
+ * We know there were no parser errors (and implicitly no
+ * L4 csum error), otherwise we wouldn't be here.
+ */
+ if ((priv->net_dev->features & NETIF_F_RXCSUM) &&
+ (be32_to_cpu(fd->status) & FM_FD_STAT_L4CV))
+ return CHECKSUM_UNNECESSARY;
+
+ /* We're here because either the parser didn't run or the L4 checksum
+ * was not verified. This may include the case of a UDP frame with
+ * checksum zero or an L4 proto other than TCP/UDP
+ */
+ return CHECKSUM_NONE;
+}
+
/* Build a linear skb around the received buffer.
* We are guaranteed there is enough room at the end of the data buffer to
* accommodate the shared info area of the skb.
@@ -1669,7 +1776,7 @@ static struct sk_buff *contig_fd_to_skb(const struct dpaa_priv *priv,
skb_reserve(skb, fd_off);
skb_put(skb, qm_fd_get_length(fd));
- skb->ip_summed = CHECKSUM_NONE;
+ skb->ip_summed = rx_csum_offload(priv, fd);
return skb;
@@ -1729,7 +1836,7 @@ static struct sk_buff *sg_fd_to_skb(const struct dpaa_priv *priv,
if (WARN_ON(unlikely(!skb)))
goto free_buffers;
- skb->ip_summed = CHECKSUM_NONE;
+ skb->ip_summed = rx_csum_offload(priv, fd);
/* Make sure forwarded skbs will have enough space
* on Tx, if extra headers are added.
@@ -2366,7 +2473,7 @@ static enum qman_cb_dqrr_result rx_default_dqrr(struct qman_portal *portal,
#endif /* __rtems__ */
struct net_device *net_dev;
#ifndef __rtems__
- u32 fd_status = fd->status;
+ u32 fd_status;
#endif /* __rtems__ */
struct dpaa_bp *dpaa_bp;
struct dpaa_priv *priv;
@@ -2673,6 +2780,7 @@ static const struct net_device_ops dpaa_ops = {
.ndo_validate_addr = eth_validate_addr,
.ndo_set_rx_mode = dpaa_set_rx_mode,
.ndo_do_ioctl = dpaa_ioctl,
+ .ndo_setup_tc = dpaa_setup_tc,
};
static int dpaa_napi_add(struct net_device *net_dev)
@@ -2975,8 +3083,10 @@ dpaa_eth_priv_probe(struct platform_device *pdev, struct mac_device *mac_dev)
priv->rx_headroom = dpaa_get_headroom(&priv->buf_layout[RX]);
/* All real interfaces need their ports initialized */
- dpaa_eth_init_ports(mac_dev, dpaa_bps, DPAA_BPS_NUM, &port_fqs,
- &priv->buf_layout[0], dev);
+ err = dpaa_eth_init_ports(mac_dev, dpaa_bps, DPAA_BPS_NUM, &port_fqs,
+ &priv->buf_layout[0], dev);
+ if (err)
+ goto init_ports_failed;
priv->percpu_priv = devm_alloc_percpu(dev, *priv->percpu_priv);
if (!priv->percpu_priv) {
@@ -2994,6 +3104,9 @@ dpaa_eth_priv_probe(struct platform_device *pdev, struct mac_device *mac_dev)
}
#ifndef __rtems__
+ priv->num_tc = 1;
+ netif_set_real_num_tx_queues(net_dev, priv->num_tc * DPAA_TC_TXQ_NUM);
+
/* Initialize NAPI */
err = dpaa_napi_add(net_dev);
if (err < 0)
@@ -3017,6 +3130,7 @@ napi_add_failed:
#endif /* __rtems__ */
dpaa_napi_del(net_dev);
alloc_percpu_failed:
+init_ports_failed:
#ifndef __rtems__
dpaa_fq_free(dev, &priv->dpaa_fq_list);
#endif /* __rtems__ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-07 15:32:33 +0000