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-rw-r--r--net/dsa/dsa_priv.h5
-rw-r--r--net/dsa/master.c6
-rw-r--r--net/dsa/slave.c10
-rw-r--r--net/dsa/tag_ar9331.c2
-rw-r--r--net/dsa/tag_brcm.c6
-rw-r--r--net/dsa/tag_dsa.c4
-rw-r--r--net/dsa/tag_gswip.c2
-rw-r--r--net/dsa/tag_hellcreek.c3
-rw-r--r--net/dsa/tag_ksz.c9
-rw-r--r--net/dsa/tag_lan9303.c2
-rw-r--r--net/dsa/tag_mtk.c2
-rw-r--r--net/dsa/tag_ocelot.c4
-rw-r--r--net/dsa/tag_ocelot_8021q.c2
-rw-r--r--net/dsa/tag_qca.c2
-rw-r--r--net/dsa/tag_rtl4_a.c2
-rw-r--r--net/dsa/tag_sja1105.c2
-rw-r--r--net/dsa/tag_trailer.c3
-rw-r--r--net/dsa/tag_xrs700x.c3
18 files changed, 34 insertions, 35 deletions
diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h
index 92282de54230..b8b17474b72b 100644
--- a/net/dsa/dsa_priv.h
+++ b/net/dsa/dsa_priv.h
@@ -154,6 +154,11 @@ const struct dsa_device_ops *dsa_find_tagger_by_name(const char *buf);
bool dsa_schedule_work(struct work_struct *work);
const char *dsa_tag_protocol_to_str(const struct dsa_device_ops *ops);
+static inline int dsa_tag_protocol_overhead(const struct dsa_device_ops *ops)
+{
+ return ops->needed_headroom + ops->needed_tailroom;
+}
+
/* master.c */
int dsa_master_setup(struct net_device *dev, struct dsa_port *cpu_dp);
void dsa_master_teardown(struct net_device *dev);
diff --git a/net/dsa/master.c b/net/dsa/master.c
index 63adbc21a735..3fc90e36772d 100644
--- a/net/dsa/master.c
+++ b/net/dsa/master.c
@@ -346,10 +346,12 @@ static struct lock_class_key dsa_master_addr_list_lock_key;
int dsa_master_setup(struct net_device *dev, struct dsa_port *cpu_dp)
{
- int mtu = ETH_DATA_LEN + cpu_dp->tag_ops->overhead;
+ const struct dsa_device_ops *tag_ops = cpu_dp->tag_ops;
struct dsa_switch *ds = cpu_dp->ds;
struct device_link *consumer_link;
- int ret;
+ int mtu, ret;
+
+ mtu = ETH_DATA_LEN + dsa_tag_protocol_overhead(tag_ops);
/* The DSA master must use SET_NETDEV_DEV for this to work. */
consumer_link = device_link_add(ds->dev, dev->dev.parent,
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index d4756b920108..3ca509eb284d 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -1569,7 +1569,7 @@ int dsa_slave_change_mtu(struct net_device *dev, int new_mtu)
mtu_limit = min_t(int, master->max_mtu, dev->max_mtu);
old_master_mtu = master->mtu;
- new_master_mtu = largest_mtu + cpu_dp->tag_ops->overhead;
+ new_master_mtu = largest_mtu + dsa_tag_protocol_overhead(cpu_dp->tag_ops);
if (new_master_mtu > mtu_limit)
return -ERANGE;
@@ -1605,7 +1605,7 @@ int dsa_slave_change_mtu(struct net_device *dev, int new_mtu)
out_port_failed:
if (new_master_mtu != old_master_mtu)
dsa_port_mtu_change(cpu_dp, old_master_mtu -
- cpu_dp->tag_ops->overhead,
+ dsa_tag_protocol_overhead(cpu_dp->tag_ops),
true);
out_cpu_failed:
if (new_master_mtu != old_master_mtu)
@@ -1824,10 +1824,8 @@ void dsa_slave_setup_tagger(struct net_device *slave)
const struct dsa_port *cpu_dp = dp->cpu_dp;
struct net_device *master = cpu_dp->master;
- if (cpu_dp->tag_ops->tail_tag)
- slave->needed_tailroom = cpu_dp->tag_ops->overhead;
- else
- slave->needed_headroom = cpu_dp->tag_ops->overhead;
+ slave->needed_headroom = cpu_dp->tag_ops->needed_headroom;
+ slave->needed_tailroom = cpu_dp->tag_ops->needed_tailroom;
/* Try to save one extra realloc later in the TX path (in the master)
* by also inheriting the master's needed headroom and tailroom.
* The 8021q driver also does this.
diff --git a/net/dsa/tag_ar9331.c b/net/dsa/tag_ar9331.c
index 002cf7f952e2..0efae1a372b3 100644
--- a/net/dsa/tag_ar9331.c
+++ b/net/dsa/tag_ar9331.c
@@ -85,7 +85,7 @@ static const struct dsa_device_ops ar9331_netdev_ops = {
.proto = DSA_TAG_PROTO_AR9331,
.xmit = ar9331_tag_xmit,
.rcv = ar9331_tag_rcv,
- .overhead = AR9331_HDR_LEN,
+ .needed_headroom = AR9331_HDR_LEN,
};
MODULE_LICENSE("GPL v2");
diff --git a/net/dsa/tag_brcm.c b/net/dsa/tag_brcm.c
index 40e9f3098c8d..0750af951fc9 100644
--- a/net/dsa/tag_brcm.c
+++ b/net/dsa/tag_brcm.c
@@ -205,7 +205,7 @@ static const struct dsa_device_ops brcm_netdev_ops = {
.proto = DSA_TAG_PROTO_BRCM,
.xmit = brcm_tag_xmit,
.rcv = brcm_tag_rcv,
- .overhead = BRCM_TAG_LEN,
+ .needed_headroom = BRCM_TAG_LEN,
};
DSA_TAG_DRIVER(brcm_netdev_ops);
@@ -286,7 +286,7 @@ static const struct dsa_device_ops brcm_legacy_netdev_ops = {
.proto = DSA_TAG_PROTO_BRCM_LEGACY,
.xmit = brcm_leg_tag_xmit,
.rcv = brcm_leg_tag_rcv,
- .overhead = BRCM_LEG_TAG_LEN,
+ .needed_headroom = BRCM_LEG_TAG_LEN,
};
DSA_TAG_DRIVER(brcm_legacy_netdev_ops);
@@ -314,7 +314,7 @@ static const struct dsa_device_ops brcm_prepend_netdev_ops = {
.proto = DSA_TAG_PROTO_BRCM_PREPEND,
.xmit = brcm_tag_xmit_prepend,
.rcv = brcm_tag_rcv_prepend,
- .overhead = BRCM_TAG_LEN,
+ .needed_headroom = BRCM_TAG_LEN,
};
DSA_TAG_DRIVER(brcm_prepend_netdev_ops);
diff --git a/net/dsa/tag_dsa.c b/net/dsa/tag_dsa.c
index 7e7b7decdf39..a822355afc90 100644
--- a/net/dsa/tag_dsa.c
+++ b/net/dsa/tag_dsa.c
@@ -303,7 +303,7 @@ static const struct dsa_device_ops dsa_netdev_ops = {
.proto = DSA_TAG_PROTO_DSA,
.xmit = dsa_xmit,
.rcv = dsa_rcv,
- .overhead = DSA_HLEN,
+ .needed_headroom = DSA_HLEN,
};
DSA_TAG_DRIVER(dsa_netdev_ops);
@@ -346,7 +346,7 @@ static const struct dsa_device_ops edsa_netdev_ops = {
.proto = DSA_TAG_PROTO_EDSA,
.xmit = edsa_xmit,
.rcv = edsa_rcv,
- .overhead = EDSA_HLEN,
+ .needed_headroom = EDSA_HLEN,
};
DSA_TAG_DRIVER(edsa_netdev_ops);
diff --git a/net/dsa/tag_gswip.c b/net/dsa/tag_gswip.c
index 2f5bd5e338ab..5985dab06ab8 100644
--- a/net/dsa/tag_gswip.c
+++ b/net/dsa/tag_gswip.c
@@ -103,7 +103,7 @@ static const struct dsa_device_ops gswip_netdev_ops = {
.proto = DSA_TAG_PROTO_GSWIP,
.xmit = gswip_tag_xmit,
.rcv = gswip_tag_rcv,
- .overhead = GSWIP_RX_HEADER_LEN,
+ .needed_headroom = GSWIP_RX_HEADER_LEN,
};
MODULE_LICENSE("GPL");
diff --git a/net/dsa/tag_hellcreek.c b/net/dsa/tag_hellcreek.c
index a09805c8e1ab..424130f85f59 100644
--- a/net/dsa/tag_hellcreek.c
+++ b/net/dsa/tag_hellcreek.c
@@ -54,8 +54,7 @@ static const struct dsa_device_ops hellcreek_netdev_ops = {
.proto = DSA_TAG_PROTO_HELLCREEK,
.xmit = hellcreek_xmit,
.rcv = hellcreek_rcv,
- .overhead = HELLCREEK_TAG_LEN,
- .tail_tag = true,
+ .needed_tailroom = HELLCREEK_TAG_LEN,
};
MODULE_LICENSE("Dual MIT/GPL");
diff --git a/net/dsa/tag_ksz.c b/net/dsa/tag_ksz.c
index 4820dbcedfa2..53565f48934c 100644
--- a/net/dsa/tag_ksz.c
+++ b/net/dsa/tag_ksz.c
@@ -77,8 +77,7 @@ static const struct dsa_device_ops ksz8795_netdev_ops = {
.proto = DSA_TAG_PROTO_KSZ8795,
.xmit = ksz8795_xmit,
.rcv = ksz8795_rcv,
- .overhead = KSZ_INGRESS_TAG_LEN,
- .tail_tag = true,
+ .needed_tailroom = KSZ_INGRESS_TAG_LEN,
};
DSA_TAG_DRIVER(ksz8795_netdev_ops);
@@ -149,8 +148,7 @@ static const struct dsa_device_ops ksz9477_netdev_ops = {
.proto = DSA_TAG_PROTO_KSZ9477,
.xmit = ksz9477_xmit,
.rcv = ksz9477_rcv,
- .overhead = KSZ9477_INGRESS_TAG_LEN,
- .tail_tag = true,
+ .needed_tailroom = KSZ9477_INGRESS_TAG_LEN,
};
DSA_TAG_DRIVER(ksz9477_netdev_ops);
@@ -183,8 +181,7 @@ static const struct dsa_device_ops ksz9893_netdev_ops = {
.proto = DSA_TAG_PROTO_KSZ9893,
.xmit = ksz9893_xmit,
.rcv = ksz9477_rcv,
- .overhead = KSZ_INGRESS_TAG_LEN,
- .tail_tag = true,
+ .needed_tailroom = KSZ_INGRESS_TAG_LEN,
};
DSA_TAG_DRIVER(ksz9893_netdev_ops);
diff --git a/net/dsa/tag_lan9303.c b/net/dsa/tag_lan9303.c
index aa1318dccaf0..26207ef39ebc 100644
--- a/net/dsa/tag_lan9303.c
+++ b/net/dsa/tag_lan9303.c
@@ -125,7 +125,7 @@ static const struct dsa_device_ops lan9303_netdev_ops = {
.proto = DSA_TAG_PROTO_LAN9303,
.xmit = lan9303_xmit,
.rcv = lan9303_rcv,
- .overhead = LAN9303_TAG_LEN,
+ .needed_headroom = LAN9303_TAG_LEN,
};
MODULE_LICENSE("GPL");
diff --git a/net/dsa/tag_mtk.c b/net/dsa/tag_mtk.c
index f9b2966d1936..cc3ba864ad5b 100644
--- a/net/dsa/tag_mtk.c
+++ b/net/dsa/tag_mtk.c
@@ -102,7 +102,7 @@ static const struct dsa_device_ops mtk_netdev_ops = {
.proto = DSA_TAG_PROTO_MTK,
.xmit = mtk_tag_xmit,
.rcv = mtk_tag_rcv,
- .overhead = MTK_HDR_LEN,
+ .needed_headroom = MTK_HDR_LEN,
};
MODULE_LICENSE("GPL");
diff --git a/net/dsa/tag_ocelot.c b/net/dsa/tag_ocelot.c
index 91f0fd1242cd..190f4bfd3bef 100644
--- a/net/dsa/tag_ocelot.c
+++ b/net/dsa/tag_ocelot.c
@@ -143,7 +143,7 @@ static const struct dsa_device_ops ocelot_netdev_ops = {
.proto = DSA_TAG_PROTO_OCELOT,
.xmit = ocelot_xmit,
.rcv = ocelot_rcv,
- .overhead = OCELOT_TOTAL_TAG_LEN,
+ .needed_headroom = OCELOT_TOTAL_TAG_LEN,
.promisc_on_master = true,
};
@@ -155,7 +155,7 @@ static const struct dsa_device_ops seville_netdev_ops = {
.proto = DSA_TAG_PROTO_SEVILLE,
.xmit = seville_xmit,
.rcv = ocelot_rcv,
- .overhead = OCELOT_TOTAL_TAG_LEN,
+ .needed_headroom = OCELOT_TOTAL_TAG_LEN,
.promisc_on_master = true,
};
diff --git a/net/dsa/tag_ocelot_8021q.c b/net/dsa/tag_ocelot_8021q.c
index 62a93303bd63..663b74793cfc 100644
--- a/net/dsa/tag_ocelot_8021q.c
+++ b/net/dsa/tag_ocelot_8021q.c
@@ -73,7 +73,7 @@ static const struct dsa_device_ops ocelot_8021q_netdev_ops = {
.proto = DSA_TAG_PROTO_OCELOT_8021Q,
.xmit = ocelot_xmit,
.rcv = ocelot_rcv,
- .overhead = VLAN_HLEN,
+ .needed_headroom = VLAN_HLEN,
.promisc_on_master = true,
};
diff --git a/net/dsa/tag_qca.c b/net/dsa/tag_qca.c
index 88181b52f480..693bda013065 100644
--- a/net/dsa/tag_qca.c
+++ b/net/dsa/tag_qca.c
@@ -91,7 +91,7 @@ static const struct dsa_device_ops qca_netdev_ops = {
.proto = DSA_TAG_PROTO_QCA,
.xmit = qca_tag_xmit,
.rcv = qca_tag_rcv,
- .overhead = QCA_HDR_LEN,
+ .needed_headroom = QCA_HDR_LEN,
};
MODULE_LICENSE("GPL");
diff --git a/net/dsa/tag_rtl4_a.c b/net/dsa/tag_rtl4_a.c
index cf8ac316f4c7..57c46b4ab2b3 100644
--- a/net/dsa/tag_rtl4_a.c
+++ b/net/dsa/tag_rtl4_a.c
@@ -124,7 +124,7 @@ static const struct dsa_device_ops rtl4a_netdev_ops = {
.proto = DSA_TAG_PROTO_RTL4_A,
.xmit = rtl4a_tag_xmit,
.rcv = rtl4a_tag_rcv,
- .overhead = RTL4_A_HDR_LEN,
+ .needed_headroom = RTL4_A_HDR_LEN,
};
module_dsa_tag_driver(rtl4a_netdev_ops);
diff --git a/net/dsa/tag_sja1105.c b/net/dsa/tag_sja1105.c
index 50496013cdb7..ff4a81eae16f 100644
--- a/net/dsa/tag_sja1105.c
+++ b/net/dsa/tag_sja1105.c
@@ -362,7 +362,7 @@ static const struct dsa_device_ops sja1105_netdev_ops = {
.xmit = sja1105_xmit,
.rcv = sja1105_rcv,
.filter = sja1105_filter,
- .overhead = VLAN_HLEN,
+ .needed_headroom = VLAN_HLEN,
.flow_dissect = sja1105_flow_dissect,
.promisc_on_master = true,
};
diff --git a/net/dsa/tag_trailer.c b/net/dsa/tag_trailer.c
index 5b97ede56a0f..ba73804340a5 100644
--- a/net/dsa/tag_trailer.c
+++ b/net/dsa/tag_trailer.c
@@ -55,8 +55,7 @@ static const struct dsa_device_ops trailer_netdev_ops = {
.proto = DSA_TAG_PROTO_TRAILER,
.xmit = trailer_xmit,
.rcv = trailer_rcv,
- .overhead = 4,
- .tail_tag = true,
+ .needed_tailroom = 4,
};
MODULE_LICENSE("GPL");
diff --git a/net/dsa/tag_xrs700x.c b/net/dsa/tag_xrs700x.c
index 858cdf9d2913..a31ff7fcb45f 100644
--- a/net/dsa/tag_xrs700x.c
+++ b/net/dsa/tag_xrs700x.c
@@ -56,8 +56,7 @@ static const struct dsa_device_ops xrs700x_netdev_ops = {
.proto = DSA_TAG_PROTO_XRS700X,
.xmit = xrs700x_xmit,
.rcv = xrs700x_rcv,
- .overhead = 1,
- .tail_tag = true,
+ .needed_tailroom = 1,
};
MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.0.4) at 2025-11-25 09:13:07 +0000