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/net/dsa/Kconfig b/net/dsa/Kconfig
index 29e2bd5..7dce11a 100644
--- a/net/dsa/Kconfig
+++ b/net/dsa/Kconfig
@@ -9,6 +9,7 @@
tristate "Distributed Switch Architecture"
depends on HAVE_NET_DSA
depends on BRIDGE || BRIDGE=n
+ select GRO_CELLS
select NET_SWITCHDEV
select PHYLINK
select NET_DEVLINK
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index 43120a3..ca80f86 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -238,7 +238,7 @@
if (dsa_skb_defer_rx_timestamp(p, skb))
return 0;
- netif_receive_skb(skb);
+ gro_cells_receive(&p->gcells, skb);
return 0;
}
diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index 716d265..70e6fc2 100644
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -399,18 +399,21 @@
ds->slave_mii_bus = devm_mdiobus_alloc(ds->dev);
if (!ds->slave_mii_bus) {
err = -ENOMEM;
- goto unregister_notifier;
+ goto teardown;
}
dsa_slave_mii_bus_init(ds);
err = mdiobus_register(ds->slave_mii_bus);
if (err < 0)
- goto unregister_notifier;
+ goto teardown;
}
return 0;
+teardown:
+ if (ds->ops->teardown)
+ ds->ops->teardown(ds);
unregister_notifier:
dsa_switch_unregister_notifier(ds);
unregister_devlink:
@@ -461,18 +464,12 @@
err = dsa_port_setup(dp);
if (err)
- goto ports_teardown;
+ continue;
}
}
return 0;
-ports_teardown:
- for (i = 0; i < port; i++)
- dsa_port_teardown(&ds->ports[i]);
-
- dsa_switch_teardown(ds);
-
switch_teardown:
for (i = 0; i < device; i++) {
ds = dst->ds[i];
diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h
index 12f8c7e..d8e8507 100644
--- a/net/dsa/dsa_priv.h
+++ b/net/dsa/dsa_priv.h
@@ -11,6 +11,7 @@
#include <linux/netdevice.h>
#include <linux/netpoll.h>
#include <net/dsa.h>
+#include <net/gro_cells.h>
enum {
DSA_NOTIFIER_AGEING_TIME,
@@ -68,6 +69,8 @@
struct pcpu_sw_netstats *stats64;
+ struct gro_cells gcells;
+
/* DSA port data, such as switch, port index, etc. */
struct dsa_port *dp;
@@ -128,7 +131,9 @@
/* port.c */
int dsa_port_set_state(struct dsa_port *dp, u8 state,
struct switchdev_trans *trans);
+int dsa_port_enable_rt(struct dsa_port *dp, struct phy_device *phy);
int dsa_port_enable(struct dsa_port *dp, struct phy_device *phy);
+void dsa_port_disable_rt(struct dsa_port *dp);
void dsa_port_disable(struct dsa_port *dp);
int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br);
void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br);
diff --git a/net/dsa/master.c b/net/dsa/master.c
index 3255dfc..40eddec 100644
--- a/net/dsa/master.c
+++ b/net/dsa/master.c
@@ -147,8 +147,7 @@
struct dsa_switch *ds = cpu_dp->ds;
int port = cpu_dp->index;
int len = ETH_GSTRING_LEN;
- int mcount = 0, count;
- unsigned int i;
+ int mcount = 0, count, i;
uint8_t pfx[4];
uint8_t *ndata;
@@ -178,6 +177,8 @@
*/
ds->ops->get_strings(ds, port, stringset, ndata);
count = ds->ops->get_sset_count(ds, port, stringset);
+ if (count < 0)
+ return;
for (i = 0; i < count; i++) {
memmove(ndata + (i * len + sizeof(pfx)),
ndata + i * len, len - sizeof(pfx));
@@ -259,7 +260,8 @@
{
struct dsa_port *cpu_dp = dev->dsa_ptr;
- dev->netdev_ops = cpu_dp->orig_ndo_ops;
+ if (cpu_dp->orig_ndo_ops)
+ dev->netdev_ops = cpu_dp->orig_ndo_ops;
cpu_dp->orig_ndo_ops = NULL;
}
diff --git a/net/dsa/port.c b/net/dsa/port.c
index 9b54e5a..fa023af 100644
--- a/net/dsa/port.c
+++ b/net/dsa/port.c
@@ -63,7 +63,7 @@
pr_err("DSA: failed to set STP state %u (%d)\n", state, err);
}
-int dsa_port_enable(struct dsa_port *dp, struct phy_device *phy)
+int dsa_port_enable_rt(struct dsa_port *dp, struct phy_device *phy)
{
struct dsa_switch *ds = dp->ds;
int port = dp->index;
@@ -78,14 +78,31 @@
if (!dp->bridge_dev)
dsa_port_set_state_now(dp, BR_STATE_FORWARDING);
+ if (dp->pl)
+ phylink_start(dp->pl);
+
return 0;
}
-void dsa_port_disable(struct dsa_port *dp)
+int dsa_port_enable(struct dsa_port *dp, struct phy_device *phy)
+{
+ int err;
+
+ rtnl_lock();
+ err = dsa_port_enable_rt(dp, phy);
+ rtnl_unlock();
+
+ return err;
+}
+
+void dsa_port_disable_rt(struct dsa_port *dp)
{
struct dsa_switch *ds = dp->ds;
int port = dp->index;
+ if (dp->pl)
+ phylink_stop(dp->pl);
+
if (!dp->bridge_dev)
dsa_port_set_state_now(dp, BR_STATE_DISABLED);
@@ -93,6 +110,13 @@
ds->ops->port_disable(ds, port);
}
+void dsa_port_disable(struct dsa_port *dp)
+{
+ rtnl_lock();
+ dsa_port_disable_rt(dp);
+ rtnl_unlock();
+}
+
int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br)
{
struct dsa_notifier_bridge_info info = {
@@ -615,10 +639,6 @@
goto err_phy_connect;
}
- rtnl_lock();
- phylink_start(dp->pl);
- rtnl_unlock();
-
return 0;
err_phy_connect:
@@ -629,9 +649,14 @@
int dsa_port_link_register_of(struct dsa_port *dp)
{
struct dsa_switch *ds = dp->ds;
+ struct device_node *phy_np;
- if (!ds->ops->adjust_link)
- return dsa_port_phylink_register(dp);
+ if (!ds->ops->adjust_link) {
+ phy_np = of_parse_phandle(dp->dn, "phy-handle", 0);
+ if (of_phy_is_fixed_link(dp->dn) || phy_np)
+ return dsa_port_phylink_register(dp);
+ return 0;
+ }
dev_warn(ds->dev,
"Using legacy PHYLIB callbacks. Please migrate to PHYLINK!\n");
@@ -646,11 +671,12 @@
{
struct dsa_switch *ds = dp->ds;
- if (!ds->ops->adjust_link) {
+ if (!ds->ops->adjust_link && dp->pl) {
rtnl_lock();
phylink_disconnect_phy(dp->pl);
rtnl_unlock();
phylink_destroy(dp->pl);
+ dp->pl = NULL;
return;
}
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 028e65f..59759ce 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -90,12 +90,10 @@
goto clear_allmulti;
}
- err = dsa_port_enable(dp, dev->phydev);
+ err = dsa_port_enable_rt(dp, dev->phydev);
if (err)
goto clear_promisc;
- phylink_start(dp->pl);
-
return 0;
clear_promisc:
@@ -119,9 +117,7 @@
cancel_work_sync(&dp->xmit_work);
skb_queue_purge(&dp->xmit_queue);
- phylink_stop(dp->pl);
-
- dsa_port_disable(dp);
+ dsa_port_disable_rt(dp);
dev_mc_unsync(master, dev);
dev_uc_unsync(master, dev);
@@ -696,13 +692,15 @@
struct dsa_switch *ds = dp->ds;
if (sset == ETH_SS_STATS) {
- int count;
+ int count = 0;
- count = 4;
- if (ds->ops->get_sset_count)
- count += ds->ops->get_sset_count(ds, dp->index, sset);
+ if (ds->ops->get_sset_count) {
+ count = ds->ops->get_sset_count(ds, dp->index, sset);
+ if (count < 0)
+ return count;
+ }
- return count;
+ return count + 4;
}
return -EOPNOTSUPP;
@@ -1329,13 +1327,11 @@
* use the switch internal MDIO bus instead
*/
ret = dsa_slave_phy_connect(slave_dev, dp->index);
- if (ret) {
- netdev_err(slave_dev,
- "failed to connect to port %d: %d\n",
- dp->index, ret);
- phylink_destroy(dp->pl);
- return ret;
- }
+ }
+ if (ret) {
+ netdev_err(slave_dev, "failed to connect to PHY: %pe\n",
+ ERR_PTR(ret));
+ phylink_destroy(dp->pl);
}
return ret;
@@ -1413,6 +1409,7 @@
if (ds->ops->port_vlan_add && ds->ops->port_vlan_del)
slave_dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
slave_dev->hw_features |= NETIF_F_HW_TC;
+ slave_dev->features |= NETIF_F_LLTX;
slave_dev->ethtool_ops = &dsa_slave_ethtool_ops;
if (!IS_ERR_OR_NULL(port->mac))
ether_addr_copy(slave_dev->dev_addr, port->mac);
@@ -1434,6 +1431,11 @@
free_netdev(slave_dev);
return -ENOMEM;
}
+
+ ret = gro_cells_init(&p->gcells, slave_dev);
+ if (ret)
+ goto out_free;
+
p->dp = port;
INIT_LIST_HEAD(&p->mall_tc_list);
INIT_WORK(&port->xmit_work, dsa_port_xmit_work);
@@ -1446,7 +1448,7 @@
ret = dsa_slave_phy_setup(slave_dev);
if (ret) {
netdev_err(master, "error %d setting up slave phy\n", ret);
- goto out_free;
+ goto out_gcells;
}
dsa_slave_notify(slave_dev, DSA_PORT_REGISTER);
@@ -1465,6 +1467,8 @@
phylink_disconnect_phy(p->dp->pl);
rtnl_unlock();
phylink_destroy(p->dp->pl);
+out_gcells:
+ gro_cells_destroy(&p->gcells);
out_free:
free_percpu(p->stats64);
free_netdev(slave_dev);
@@ -1485,6 +1489,7 @@
dsa_slave_notify(slave_dev, DSA_PORT_UNREGISTER);
unregister_netdev(slave_dev);
phylink_destroy(dp->pl);
+ gro_cells_destroy(&p->gcells);
free_percpu(p->stats64);
free_netdev(slave_dev);
}
diff --git a/net/dsa/tag_8021q.c b/net/dsa/tag_8021q.c
index 9e5a883..ebe7384 100644
--- a/net/dsa/tag_8021q.c
+++ b/net/dsa/tag_8021q.c
@@ -299,49 +299,6 @@
}
EXPORT_SYMBOL_GPL(dsa_8021q_xmit);
-/* In the DSA packet_type handler, skb->data points in the middle of the VLAN
- * tag, after tpid and before tci. This is because so far, ETH_HLEN
- * (DMAC, SMAC, EtherType) bytes were pulled.
- * There are 2 bytes of VLAN tag left in skb->data, and upper
- * layers expect the 'real' EtherType to be consumed as well.
- * Coincidentally, a VLAN header is also of the same size as
- * the number of bytes that need to be pulled.
- *
- * skb_mac_header skb->data
- * | |
- * v v
- * | | | | | | | | | | | | | | | | | | |
- * +-----------------------+-----------------------+-------+-------+-------+
- * | Destination MAC | Source MAC | TPID | TCI | EType |
- * +-----------------------+-----------------------+-------+-------+-------+
- * ^ | |
- * |<--VLAN_HLEN-->to <---VLAN_HLEN--->
- * from |
- * >>>>>>> v
- * >>>>>>> | | | | | | | | | | | | | | |
- * >>>>>>> +-----------------------+-----------------------+-------+
- * >>>>>>> | Destination MAC | Source MAC | EType |
- * +-----------------------+-----------------------+-------+
- * ^ ^
- * (now part of | |
- * skb->head) skb_mac_header skb->data
- */
-struct sk_buff *dsa_8021q_remove_header(struct sk_buff *skb)
-{
- u8 *from = skb_mac_header(skb);
- u8 *dest = from + VLAN_HLEN;
-
- memmove(dest, from, ETH_HLEN - VLAN_HLEN);
- skb_pull(skb, VLAN_HLEN);
- skb_push(skb, ETH_HLEN);
- skb_reset_mac_header(skb);
- skb_reset_mac_len(skb);
- skb_pull_rcsum(skb, ETH_HLEN);
-
- return skb;
-}
-EXPORT_SYMBOL_GPL(dsa_8021q_remove_header);
-
static const struct dsa_device_ops dsa_8021q_netdev_ops = {
.name = "8021q",
.proto = DSA_TAG_PROTO_8021Q,
diff --git a/net/dsa/tag_brcm.c b/net/dsa/tag_brcm.c
index 9c31141..9169b63 100644
--- a/net/dsa/tag_brcm.c
+++ b/net/dsa/tag_brcm.c
@@ -140,6 +140,8 @@
/* Remove Broadcom tag and update checksum */
skb_pull_rcsum(skb, BRCM_TAG_LEN);
+ skb->offload_fwd_mark = 1;
+
return skb;
}
#endif
diff --git a/net/dsa/tag_edsa.c b/net/dsa/tag_edsa.c
index e8eaa80..d6200ff 100644
--- a/net/dsa/tag_edsa.c
+++ b/net/dsa/tag_edsa.c
@@ -13,6 +13,16 @@
#define DSA_HLEN 4
#define EDSA_HLEN 8
+#define FRAME_TYPE_TO_CPU 0x00
+#define FRAME_TYPE_FORWARD 0x03
+
+#define TO_CPU_CODE_MGMT_TRAP 0x00
+#define TO_CPU_CODE_FRAME2REG 0x01
+#define TO_CPU_CODE_IGMP_MLD_TRAP 0x02
+#define TO_CPU_CODE_POLICY_TRAP 0x03
+#define TO_CPU_CODE_ARP_MIRROR 0x04
+#define TO_CPU_CODE_POLICY_MIRROR 0x05
+
static struct sk_buff *edsa_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct dsa_port *dp = dsa_slave_to_port(dev);
@@ -77,6 +87,8 @@
struct packet_type *pt)
{
u8 *edsa_header;
+ int frame_type;
+ int code;
int source_device;
int source_port;
@@ -91,8 +103,29 @@
/*
* Check that frame type is either TO_CPU or FORWARD.
*/
- if ((edsa_header[0] & 0xc0) != 0x00 && (edsa_header[0] & 0xc0) != 0xc0)
+ frame_type = edsa_header[0] >> 6;
+
+ switch (frame_type) {
+ case FRAME_TYPE_TO_CPU:
+ code = (edsa_header[1] & 0x6) | ((edsa_header[2] >> 4) & 1);
+
+ /*
+ * Mark the frame to never egress on any port of the same switch
+ * unless it's a trapped IGMP/MLD packet, in which case the
+ * bridge might want to forward it.
+ */
+ if (code != TO_CPU_CODE_IGMP_MLD_TRAP)
+ skb->offload_fwd_mark = 1;
+
+ break;
+
+ case FRAME_TYPE_FORWARD:
+ skb->offload_fwd_mark = 1;
+ break;
+
+ default:
return NULL;
+ }
/*
* Determine source device and port.
@@ -156,8 +189,6 @@
2 * ETH_ALEN);
}
- skb->offload_fwd_mark = 1;
-
return skb;
}
diff --git a/net/dsa/tag_gswip.c b/net/dsa/tag_gswip.c
index b678160..408d4af 100644
--- a/net/dsa/tag_gswip.c
+++ b/net/dsa/tag_gswip.c
@@ -104,7 +104,7 @@
}
static const struct dsa_device_ops gswip_netdev_ops = {
- .name = "gwsip",
+ .name = "gswip",
.proto = DSA_TAG_PROTO_GSWIP,
.xmit = gswip_tag_xmit,
.rcv = gswip_tag_rcv,
diff --git a/net/dsa/tag_mtk.c b/net/dsa/tag_mtk.c
index b5705cb..edc505e 100644
--- a/net/dsa/tag_mtk.c
+++ b/net/dsa/tag_mtk.c
@@ -13,15 +13,20 @@
#define MTK_HDR_LEN 4
#define MTK_HDR_XMIT_UNTAGGED 0
#define MTK_HDR_XMIT_TAGGED_TPID_8100 1
+#define MTK_HDR_XMIT_TAGGED_TPID_88A8 2
#define MTK_HDR_RECV_SOURCE_PORT_MASK GENMASK(2, 0)
#define MTK_HDR_XMIT_DP_BIT_MASK GENMASK(5, 0)
+#define MTK_HDR_XMIT_SA_DIS BIT(6)
static struct sk_buff *mtk_tag_xmit(struct sk_buff *skb,
struct net_device *dev)
{
struct dsa_port *dp = dsa_slave_to_port(dev);
+ u8 xmit_tpid;
u8 *mtk_tag;
- bool is_vlan_skb = true;
+ unsigned char *dest = eth_hdr(skb)->h_dest;
+ bool is_multicast_skb = is_multicast_ether_addr(dest) &&
+ !is_broadcast_ether_addr(dest);
/* Build the special tag after the MAC Source Address. If VLAN header
* is present, it's required that VLAN header and special tag is
@@ -29,13 +34,20 @@
* the both special and VLAN tag at the same time and then look up VLAN
* table with VID.
*/
- if (!skb_vlan_tagged(skb)) {
+ switch (skb->protocol) {
+ case htons(ETH_P_8021Q):
+ xmit_tpid = MTK_HDR_XMIT_TAGGED_TPID_8100;
+ break;
+ case htons(ETH_P_8021AD):
+ xmit_tpid = MTK_HDR_XMIT_TAGGED_TPID_88A8;
+ break;
+ default:
if (skb_cow_head(skb, MTK_HDR_LEN) < 0)
return NULL;
+ xmit_tpid = MTK_HDR_XMIT_UNTAGGED;
skb_push(skb, MTK_HDR_LEN);
memmove(skb->data, skb->data + MTK_HDR_LEN, 2 * ETH_ALEN);
- is_vlan_skb = false;
}
mtk_tag = skb->data + 2 * ETH_ALEN;
@@ -43,12 +55,15 @@
/* Mark tag attribute on special tag insertion to notify hardware
* whether that's a combined special tag with 802.1Q header.
*/
- mtk_tag[0] = is_vlan_skb ? MTK_HDR_XMIT_TAGGED_TPID_8100 :
- MTK_HDR_XMIT_UNTAGGED;
+ mtk_tag[0] = xmit_tpid;
mtk_tag[1] = (1 << dp->index) & MTK_HDR_XMIT_DP_BIT_MASK;
+ /* Disable SA learning for multicast frames */
+ if (unlikely(is_multicast_skb))
+ mtk_tag[1] |= MTK_HDR_XMIT_SA_DIS;
+
/* Tag control information is kept for 802.1Q */
- if (!is_vlan_skb) {
+ if (xmit_tpid == MTK_HDR_XMIT_UNTAGGED) {
mtk_tag[2] = 0;
mtk_tag[3] = 0;
}
@@ -61,6 +76,9 @@
{
int port;
__be16 *phdr, hdr;
+ unsigned char *dest = eth_hdr(skb)->h_dest;
+ bool is_multicast_skb = is_multicast_ether_addr(dest) &&
+ !is_broadcast_ether_addr(dest);
if (unlikely(!pskb_may_pull(skb, MTK_HDR_LEN)))
return NULL;
@@ -86,6 +104,10 @@
if (!skb->dev)
return NULL;
+ /* Only unicast or broadcast frames are offloaded */
+ if (likely(!is_multicast_skb))
+ skb->offload_fwd_mark = 1;
+
return skb;
}
diff --git a/net/dsa/tag_qca.c b/net/dsa/tag_qca.c
index c958852..70db7c9 100644
--- a/net/dsa/tag_qca.c
+++ b/net/dsa/tag_qca.c
@@ -33,10 +33,7 @@
struct dsa_port *dp = dsa_slave_to_port(dev);
u16 *phdr, hdr;
- dev->stats.tx_packets++;
- dev->stats.tx_bytes += skb->len;
-
- if (skb_cow_head(skb, 0) < 0)
+ if (skb_cow_head(skb, QCA_HDR_LEN) < 0)
return NULL;
skb_push(skb, QCA_HDR_LEN);
diff --git a/net/dsa/tag_sja1105.c b/net/dsa/tag_sja1105.c
index 63ef2a1..12f3ce5 100644
--- a/net/dsa/tag_sja1105.c
+++ b/net/dsa/tag_sja1105.c
@@ -238,14 +238,14 @@
{
struct sja1105_meta meta = {0};
int source_port, switch_id;
- struct vlan_ethhdr *hdr;
+ struct ethhdr *hdr;
u16 tpid, vid, tci;
bool is_link_local;
bool is_tagged;
bool is_meta;
- hdr = vlan_eth_hdr(skb);
- tpid = ntohs(hdr->h_vlan_proto);
+ hdr = eth_hdr(skb);
+ tpid = ntohs(hdr->h_proto);
is_tagged = (tpid == ETH_P_SJA1105);
is_link_local = sja1105_is_link_local(skb);
is_meta = sja1105_is_meta_frame(skb);
@@ -254,7 +254,12 @@
if (is_tagged) {
/* Normal traffic path. */
- tci = ntohs(hdr->h_vlan_TCI);
+ skb_push_rcsum(skb, ETH_HLEN);
+ __skb_vlan_pop(skb, &tci);
+ skb_pull_rcsum(skb, ETH_HLEN);
+ skb_reset_network_header(skb);
+ skb_reset_transport_header(skb);
+
vid = tci & VLAN_VID_MASK;
source_port = dsa_8021q_rx_source_port(vid);
switch_id = dsa_8021q_rx_switch_id(vid);
@@ -283,12 +288,6 @@
return NULL;
}
- /* Delete/overwrite fake VLAN header, DSA expects to not find
- * it there, see dsa_switch_rcv: skb_push(skb, ETH_HLEN).
- */
- if (is_tagged)
- skb = dsa_8021q_remove_header(skb);
-
return sja1105_rcv_meta_state_machine(skb, &meta, is_link_local,
is_meta);
}