Update Linux to v5.4.148
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.148.tar.gz
Change-Id: Ib3d26c5ba9b022e2e03533005c4fed4d7c30b61b
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c
index 51ad864..382a45d 100644
--- a/drivers/net/ethernet/freescale/gianfar.c
+++ b/drivers/net/ethernet/freescale/gianfar.c
@@ -366,7 +366,11 @@
static int gfar_set_mac_addr(struct net_device *dev, void *p)
{
- eth_mac_addr(dev, p);
+ int ret;
+
+ ret = eth_mac_addr(dev, p);
+ if (ret)
+ return ret;
gfar_set_mac_for_addr(dev, 0, dev->dev_addr);
@@ -751,8 +755,10 @@
continue;
err = gfar_parse_group(child, priv, model);
- if (err)
+ if (err) {
+ of_node_put(child);
goto err_grp_init;
+ }
}
} else { /* SQ_SG_MODE */
err = gfar_parse_group(np, priv, model);
@@ -1824,20 +1830,12 @@
fcb_len = GMAC_FCB_LEN + GMAC_TXPAL_LEN;
/* make space for additional header when fcb is needed */
- if (fcb_len && unlikely(skb_headroom(skb) < fcb_len)) {
- struct sk_buff *skb_new;
-
- skb_new = skb_realloc_headroom(skb, fcb_len);
- if (!skb_new) {
+ if (fcb_len) {
+ if (unlikely(skb_cow_head(skb, fcb_len))) {
dev->stats.tx_errors++;
dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
}
-
- if (skb->sk)
- skb_set_owner_w(skb_new, skb->sk);
- dev_consume_skb_any(skb);
- skb = skb_new;
}
/* total number of fragments in the SKB */
@@ -2204,13 +2202,17 @@
skb_dirtytx = tx_queue->skb_dirtytx;
while ((skb = tx_queue->tx_skbuff[skb_dirtytx])) {
+ bool do_tstamp;
+
+ do_tstamp = (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) &&
+ priv->hwts_tx_en;
frags = skb_shinfo(skb)->nr_frags;
/* When time stamping, one additional TxBD must be freed.
* Also, we need to dma_unmap_single() the TxPAL.
*/
- if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS))
+ if (unlikely(do_tstamp))
nr_txbds = frags + 2;
else
nr_txbds = frags + 1;
@@ -2224,7 +2226,7 @@
(lstatus & BD_LENGTH_MASK))
break;
- if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS)) {
+ if (unlikely(do_tstamp)) {
next = next_txbd(bdp, base, tx_ring_size);
buflen = be16_to_cpu(next->length) +
GMAC_FCB_LEN + GMAC_TXPAL_LEN;
@@ -2234,7 +2236,7 @@
dma_unmap_single(priv->dev, be32_to_cpu(bdp->bufPtr),
buflen, DMA_TO_DEVICE);
- if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS)) {
+ if (unlikely(do_tstamp)) {
struct skb_shared_hwtstamps shhwtstamps;
u64 *ns = (u64 *)(((uintptr_t)skb->data + 0x10) &
~0x7UL);
@@ -2390,6 +2392,10 @@
if (lstatus & BD_LFLAG(RXBD_LAST))
size -= skb->len;
+ WARN(size < 0, "gianfar: rx fragment size underflow");
+ if (size < 0)
+ return false;
+
skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, page,
rxb->page_offset + RXBUF_ALIGNMENT,
size, GFAR_RXB_TRUESIZE);
@@ -2552,6 +2558,17 @@
if (lstatus & BD_LFLAG(RXBD_EMPTY))
break;
+ /* lost RXBD_LAST descriptor due to overrun */
+ if (skb &&
+ (lstatus & BD_LFLAG(RXBD_FIRST))) {
+ /* discard faulty buffer */
+ dev_kfree_skb(skb);
+ skb = NULL;
+ rx_queue->stats.rx_dropped++;
+
+ /* can continue normally */
+ }
+
/* order rx buffer descriptor reads */
rmb();
@@ -3371,7 +3388,7 @@
if (dev->features & NETIF_F_IP_CSUM ||
priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)
- dev->needed_headroom = GMAC_FCB_LEN;
+ dev->needed_headroom = GMAC_FCB_LEN + GMAC_TXPAL_LEN;
/* Initializing some of the rx/tx queue level parameters */
for (i = 0; i < priv->num_tx_queues; i++) {