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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
commitf4cdf7ca9a1fdcca413157df19753f388a5a224e (patch)
tree60a31895b2446cd7fa27514e8c2843534a0de0da /net/ethtool/tunnels.c
downloadlinux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.tar.gz
linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.zip
Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediagrafted
Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ...
Diffstat (limited to 'net/ethtool/tunnels.c')
-rw-r--r--net/ethtool/tunnels.c281
1 files changed, 281 insertions, 0 deletions
diff --git a/net/ethtool/tunnels.c b/net/ethtool/tunnels.c
new file mode 100644
index 000000000..b4ce47dd2
--- /dev/null
+++ b/net/ethtool/tunnels.c
@@ -0,0 +1,281 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include <linux/ethtool_netlink.h>
+#include <net/udp_tunnel.h>
+#include <net/vxlan.h>
+
+#include "bitset.h"
+#include "common.h"
+#include "netlink.h"
+
+const struct nla_policy ethnl_tunnel_info_get_policy[] = {
+ [ETHTOOL_A_TUNNEL_INFO_HEADER] =
+ NLA_POLICY_NESTED(ethnl_header_policy),
+};
+
+static_assert(ETHTOOL_UDP_TUNNEL_TYPE_VXLAN == ilog2(UDP_TUNNEL_TYPE_VXLAN));
+static_assert(ETHTOOL_UDP_TUNNEL_TYPE_GENEVE == ilog2(UDP_TUNNEL_TYPE_GENEVE));
+static_assert(ETHTOOL_UDP_TUNNEL_TYPE_VXLAN_GPE ==
+ ilog2(UDP_TUNNEL_TYPE_VXLAN_GPE));
+
+static ssize_t ethnl_udp_table_reply_size(unsigned int types, bool compact)
+{
+ ssize_t size;
+
+ size = ethnl_bitset32_size(&types, NULL, __ETHTOOL_UDP_TUNNEL_TYPE_CNT,
+ udp_tunnel_type_names, compact);
+ if (size < 0)
+ return size;
+
+ return size +
+ nla_total_size(0) + /* _UDP_TABLE */
+ nla_total_size(sizeof(u32)); /* _UDP_TABLE_SIZE */
+}
+
+static ssize_t
+ethnl_tunnel_info_reply_size(const struct ethnl_req_info *req_base,
+ struct netlink_ext_ack *extack)
+{
+ bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
+ const struct udp_tunnel_nic_info *info;
+ unsigned int i;
+ ssize_t ret;
+ size_t size;
+
+ info = req_base->dev->udp_tunnel_nic_info;
+ if (!info) {
+ NL_SET_ERR_MSG(extack,
+ "device does not report tunnel offload info");
+ return -EOPNOTSUPP;
+ }
+
+ size = nla_total_size(0); /* _INFO_UDP_PORTS */
+
+ for (i = 0; i < UDP_TUNNEL_NIC_MAX_TABLES; i++) {
+ if (!info->tables[i].n_entries)
+ break;
+
+ ret = ethnl_udp_table_reply_size(info->tables[i].tunnel_types,
+ compact);
+ if (ret < 0)
+ return ret;
+ size += ret;
+
+ size += udp_tunnel_nic_dump_size(req_base->dev, i);
+ }
+
+ if (info->flags & UDP_TUNNEL_NIC_INFO_STATIC_IANA_VXLAN) {
+ ret = ethnl_udp_table_reply_size(0, compact);
+ if (ret < 0)
+ return ret;
+ size += ret;
+
+ size += nla_total_size(0) + /* _TABLE_ENTRY */
+ nla_total_size(sizeof(__be16)) + /* _ENTRY_PORT */
+ nla_total_size(sizeof(u32)); /* _ENTRY_TYPE */
+ }
+
+ return size;
+}
+
+static int
+ethnl_tunnel_info_fill_reply(const struct ethnl_req_info *req_base,
+ struct sk_buff *skb)
+{
+ bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
+ const struct udp_tunnel_nic_info *info;
+ struct nlattr *ports, *table, *entry;
+ unsigned int i;
+
+ info = req_base->dev->udp_tunnel_nic_info;
+ if (!info)
+ return -EOPNOTSUPP;
+
+ ports = nla_nest_start(skb, ETHTOOL_A_TUNNEL_INFO_UDP_PORTS);
+ if (!ports)
+ return -EMSGSIZE;
+
+ for (i = 0; i < UDP_TUNNEL_NIC_MAX_TABLES; i++) {
+ if (!info->tables[i].n_entries)
+ break;
+
+ table = nla_nest_start(skb, ETHTOOL_A_TUNNEL_UDP_TABLE);
+ if (!table)
+ goto err_cancel_ports;
+
+ if (nla_put_u32(skb, ETHTOOL_A_TUNNEL_UDP_TABLE_SIZE,
+ info->tables[i].n_entries))
+ goto err_cancel_table;
+
+ if (ethnl_put_bitset32(skb, ETHTOOL_A_TUNNEL_UDP_TABLE_TYPES,
+ &info->tables[i].tunnel_types, NULL,
+ __ETHTOOL_UDP_TUNNEL_TYPE_CNT,
+ udp_tunnel_type_names, compact))
+ goto err_cancel_table;
+
+ if (udp_tunnel_nic_dump_write(req_base->dev, i, skb))
+ goto err_cancel_table;
+
+ nla_nest_end(skb, table);
+ }
+
+ if (info->flags & UDP_TUNNEL_NIC_INFO_STATIC_IANA_VXLAN) {
+ u32 zero = 0;
+
+ table = nla_nest_start(skb, ETHTOOL_A_TUNNEL_UDP_TABLE);
+ if (!table)
+ goto err_cancel_ports;
+
+ if (nla_put_u32(skb, ETHTOOL_A_TUNNEL_UDP_TABLE_SIZE, 1))
+ goto err_cancel_table;
+
+ if (ethnl_put_bitset32(skb, ETHTOOL_A_TUNNEL_UDP_TABLE_TYPES,
+ &zero, NULL,
+ __ETHTOOL_UDP_TUNNEL_TYPE_CNT,
+ udp_tunnel_type_names, compact))
+ goto err_cancel_table;
+
+ entry = nla_nest_start(skb, ETHTOOL_A_TUNNEL_UDP_TABLE_ENTRY);
+ if (!entry)
+ goto err_cancel_entry;
+
+ if (nla_put_be16(skb, ETHTOOL_A_TUNNEL_UDP_ENTRY_PORT,
+ htons(IANA_VXLAN_UDP_PORT)) ||
+ nla_put_u32(skb, ETHTOOL_A_TUNNEL_UDP_ENTRY_TYPE,
+ ilog2(UDP_TUNNEL_TYPE_VXLAN)))
+ goto err_cancel_entry;
+
+ nla_nest_end(skb, entry);
+ nla_nest_end(skb, table);
+ }
+
+ nla_nest_end(skb, ports);
+
+ return 0;
+
+err_cancel_entry:
+ nla_nest_cancel(skb, entry);
+err_cancel_table:
+ nla_nest_cancel(skb, table);
+err_cancel_ports:
+ nla_nest_cancel(skb, ports);
+ return -EMSGSIZE;
+}
+
+int ethnl_tunnel_info_doit(struct sk_buff *skb, struct genl_info *info)
+{
+ struct ethnl_req_info req_info = {};
+ struct nlattr **tb = info->attrs;
+ struct sk_buff *rskb;
+ void *reply_payload;
+ int reply_len;
+ int ret;
+
+ ret = ethnl_parse_header_dev_get(&req_info,
+ tb[ETHTOOL_A_TUNNEL_INFO_HEADER],
+ genl_info_net(info), info->extack,
+ true);
+ if (ret < 0)
+ return ret;
+
+ rtnl_lock();
+ ret = ethnl_tunnel_info_reply_size(&req_info, info->extack);
+ if (ret < 0)
+ goto err_unlock_rtnl;
+ reply_len = ret + ethnl_reply_header_size();
+
+ rskb = ethnl_reply_init(reply_len, req_info.dev,
+ ETHTOOL_MSG_TUNNEL_INFO_GET_REPLY,
+ ETHTOOL_A_TUNNEL_INFO_HEADER,
+ info, &reply_payload);
+ if (!rskb) {
+ ret = -ENOMEM;
+ goto err_unlock_rtnl;
+ }
+
+ ret = ethnl_tunnel_info_fill_reply(&req_info, rskb);
+ if (ret)
+ goto err_free_msg;
+ rtnl_unlock();
+ ethnl_parse_header_dev_put(&req_info);
+ genlmsg_end(rskb, reply_payload);
+
+ return genlmsg_reply(rskb, info);
+
+err_free_msg:
+ nlmsg_free(rskb);
+err_unlock_rtnl:
+ rtnl_unlock();
+ ethnl_parse_header_dev_put(&req_info);
+ return ret;
+}
+
+struct ethnl_tunnel_info_dump_ctx {
+ struct ethnl_req_info req_info;
+ unsigned long ifindex;
+};
+
+int ethnl_tunnel_info_start(struct netlink_callback *cb)
+{
+ const struct genl_dumpit_info *info = genl_dumpit_info(cb);
+ struct ethnl_tunnel_info_dump_ctx *ctx = (void *)cb->ctx;
+ struct nlattr **tb = info->info.attrs;
+ int ret;
+
+ BUILD_BUG_ON(sizeof(*ctx) > sizeof(cb->ctx));
+
+ memset(ctx, 0, sizeof(*ctx));
+
+ ret = ethnl_parse_header_dev_get(&ctx->req_info,
+ tb[ETHTOOL_A_TUNNEL_INFO_HEADER],
+ sock_net(cb->skb->sk), cb->extack,
+ false);
+ if (ctx->req_info.dev) {
+ ethnl_parse_header_dev_put(&ctx->req_info);
+ ctx->req_info.dev = NULL;
+ }
+
+ return ret;
+}
+
+int ethnl_tunnel_info_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
+{
+ struct ethnl_tunnel_info_dump_ctx *ctx = (void *)cb->ctx;
+ struct net *net = sock_net(skb->sk);
+ struct net_device *dev;
+ int ret = 0;
+ void *ehdr;
+
+ rtnl_lock();
+ for_each_netdev_dump(net, dev, ctx->ifindex) {
+ ehdr = ethnl_dump_put(skb, cb,
+ ETHTOOL_MSG_TUNNEL_INFO_GET_REPLY);
+ if (!ehdr) {
+ ret = -EMSGSIZE;
+ break;
+ }
+
+ ret = ethnl_fill_reply_header(skb, dev,
+ ETHTOOL_A_TUNNEL_INFO_HEADER);
+ if (ret < 0) {
+ genlmsg_cancel(skb, ehdr);
+ break;
+ }
+
+ ctx->req_info.dev = dev;
+ ret = ethnl_tunnel_info_fill_reply(&ctx->req_info, skb);
+ ctx->req_info.dev = NULL;
+ if (ret < 0) {
+ genlmsg_cancel(skb, ehdr);
+ if (ret == -EOPNOTSUPP)
+ continue;
+ break;
+ }
+ genlmsg_end(skb, ehdr);
+ }
+ rtnl_unlock();
+
+ if (ret == -EMSGSIZE && skb->len)
+ return skb->len;
+ return ret;
+}