[bpf-next,1/7] netdev-genl: create a simple family for netdev stuff

Message ID	272fa19f57de2d14e9666b4cd9b1ae8a61a94807.1674234430.git.lorenzo@kernel.org (mailing list archive)
State	Superseded
Delegated to:	BPF
Headers	show Return-Path: <netdev-owner@vger.kernel.org> From: Lorenzo Bianconi <lorenzo@kernel.org> To: bpf@vger.kernel.org Cc: netdev@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, davem@davemloft.net, kuba@kernel.org, hawk@kernel.org, pabeni@redhat.com, edumazet@google.com, toke@redhat.com, memxor@gmail.com, alardam@gmail.com, saeedm@nvidia.com, anthony.l.nguyen@intel.com, gospo@broadcom.com, vladimir.oltean@nxp.com, nbd@nbd.name, john@phrozen.org, leon@kernel.org, simon.horman@corigine.com, aelior@marvell.com, christophe.jaillet@wanadoo.fr, ecree.xilinx@gmail.com, mst@redhat.com, bjorn@kernel.org, magnus.karlsson@intel.com, maciej.fijalkowski@intel.com, intel-wired-lan@lists.osuosl.org, lorenzo.bianconi@redhat.com, niklas.soderlund@corigine.com Subject: [PATCH bpf-next 1/7] netdev-genl: create a simple family for netdev stuff Date: Fri, 20 Jan 2023 18:16:50 +0100 Message-Id: <272fa19f57de2d14e9666b4cd9b1ae8a61a94807.1674234430.git.lorenzo@kernel.org> In-Reply-To: <cover.1674234430.git.lorenzo@kernel.org> References: <cover.1674234430.git.lorenzo@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	xdp: introduce xdp-feature support \| expand [bpf-next,0/7] xdp: introduce xdp-feature support [bpf-next,1/7] netdev-genl: create a simple family for netdev stuff [bpf-next,2/7] drivers: net: turn on XDP features [bpf-next,3/7] xsk: add usage of XDP features flags [bpf-next,4/7] libbpf: add the capability to specify netlink proto in libbpf_netlink_send_recv [bpf-next,5/7] libbpf: add API to get XDP/XSK supported features [bpf-next,6/7] bpf: devmap: check XDP features in bpf_map_update_elem and __xdp_enqueue [bpf-next,7/7] selftests/bpf: introduce XDP compliance test tool

Context	Check	Description
bpf/vmtest-bpf-next-PR	fail	PR summary
netdev/tree_selection	success	Clearly marked for bpf-next, async
netdev/fixes_present	success	Fixes tag not required for -next series
netdev/subject_prefix	success	Link
netdev/cover_letter	success	Series has a cover letter
netdev/patch_count	success	Link
netdev/header_inline	success	No static functions without inline keyword in header files
netdev/build_32bit	fail	Errors and warnings before: 4353 this patch: 4354
netdev/cc_maintainers	warning	4 maintainers not CCed: imagedong@tencent.com linux-doc@vger.kernel.org john.fastabend@gmail.com corbet@lwn.net
netdev/build_clang	fail	Errors and warnings before: 1020 this patch: 1022
netdev/module_param	success	Was 0 now: 0
netdev/verify_signedoff	success	Signed-off-by tag matches author and committer
netdev/check_selftest	success	No net selftest shell script
netdev/verify_fixes	success	No Fixes tag
netdev/build_allmodconfig_warn	fail	Errors and warnings before: 4563 this patch: 4564
netdev/checkpatch	warning	WARNING: Improper SPDX comment style for 'net/core/netdev-genl-gen.h', please use '/*' instead WARNING: Missing or malformed SPDX-License-Identifier tag in line 1 WARNING: added, moved or deleted file(s), does MAINTAINERS need updating? WARNING: line length of 85 exceeds 80 columns
netdev/kdoc	fail	Errors and warnings before: 0 this patch: 1
netdev/source_inline	success	Was 0 now: 0
bpf/vmtest-bpf-next-VM_Test-1	success	Logs for ${{ matrix.test }} on ${{ matrix.arch }} with ${{ matrix.toolchain }}
bpf/vmtest-bpf-next-VM_Test-2	success	Logs for ShellCheck
bpf/vmtest-bpf-next-VM_Test-3	fail	Logs for build for aarch64 with gcc
bpf/vmtest-bpf-next-VM_Test-4	fail	Logs for build for aarch64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-5	fail	Logs for build for s390x with gcc
bpf/vmtest-bpf-next-VM_Test-6	fail	Logs for build for x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-7	fail	Logs for build for x86_64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-8	success	Logs for llvm-toolchain
bpf/vmtest-bpf-next-VM_Test-9	success	Logs for set-matrix

diff --git a/Documentation/netlink/specs/netdev.yaml b/Documentation/netlink/specs/netdev.yaml new file mode 100644 index 000000000000..6445fa5af9d3 --- /dev/null +++ b/Documentation/netlink/specs/netdev.yaml @@ -0,0 +1,72 @@ +name: netdev + +doc: + netdev configuration over generic netlink. + +definitions: + - + type: enum + name: xdp-feat + entries: [ aborted, drop, pass, redirect, + ndo-xmit, xsk-zerocopy, + hw-offload, rx-sg, ndo-xmit-sg + ] + +attribute-sets: + - + name: dev + attributes: + - + name: ifindex + doc: netdev ifindex + type: u32 + value: 1 + checks: + min: 1 + - + name: pad + type: pad + - + name: xdp-features + doc: Bitmask of enabled xdp-features. + type: u64 + enum: xdp-feat + enum-as-flags: true + +operations: + list: + - + name: dev-get + doc: Get / dump information about a netdev. + value: 1 + attribute-set: dev + do: + request: + attributes: + - ifindex + reply: &dev-all + attributes: + - ifindex + - xdp-features + dump: + reply: *dev-all + - + name: dev-add-ntf + doc: Notification about device appearing. + notify: dev-get + mcgrp: mgmt + - + name: dev-del-ntf + doc: Notification about device disappearing. + notify: dev-get + mcgrp: mgmt + - + name: dev-change-ntf + doc: Notification about device configuration being changed. + notify: dev-get + mcgrp: mgmt + +mcast-groups: + list: + - + name: mgmt diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index aad12a179e54..5c2ebc214583 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -47,6 +47,7 @@ #include <uapi/linux/netdevice.h> #include <uapi/linux/if_bonding.h> #include <uapi/linux/pkt_cls.h> +#include <uapi/linux/netdev.h> #include <linux/hashtable.h> #include <linux/rbtree.h> #include <net/net_trackers.h> @@ -2048,6 +2049,7 @@ struct net_device { /* Read-mostly cache-line for fast-path access */ unsigned int flags; + xdp_features_t xdp_features; unsigned long long priv_flags; const struct net_device_ops *netdev_ops; int ifindex; diff --git a/include/net/xdp.h b/include/net/xdp.h index 55dbc68bfffc..3d37460f0bdb 100644 --- a/include/net/xdp.h +++ b/include/net/xdp.h @@ -7,6 +7,7 @@ #define __LINUX_NET_XDP_H__ #include <linux/skbuff.h> /* skb_shared_info */ +#include <uapi/linux/netdev.h> /** * DOC: XDP RX-queue information @@ -43,6 +44,8 @@ enum xdp_mem_type { MEM_TYPE_MAX, }; +typedef u32 xdp_features_t; + /* XDP flags for ndo_xdp_xmit */ #define XDP_XMIT_FLUSH (1U << 0) /* doorbell signal consumer */ #define XDP_XMIT_FLAGS_MASK XDP_XMIT_FLUSH diff --git a/include/uapi/linux/netdev.h b/include/uapi/linux/netdev.h new file mode 100644 index 000000000000..254fc336d469 --- /dev/null +++ b/include/uapi/linux/netdev.h @@ -0,0 +1,66 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* Do not edit directly, auto-generated from: */ +/* Documentation/netlink/specs/netdev.yaml */ +/* YNL-GEN uapi header */ + +#ifndef _UAPI_LINUX_NETDEV_H +#define _UAPI_LINUX_NETDEV_H + +#define NETDEV_FAMILY_NAME "netdev" +#define NETDEV_FAMILY_VERSION 1 + +enum netdev_xdp_act { + NETDEV_XDP_ACT_ABORTED_BIT, + NETDEV_XDP_ACT_DROP_BIT, + NETDEV_XDP_ACT_PASS_BIT, + NETDEV_XDP_ACT_TX_BIT, + NETDEV_XDP_ACT_REDIRECT_BIT, + NETDEV_XDP_ACT_NDO_XMIT_BIT, + NETDEV_XDP_ACT_XSK_ZEROCOPY_BIT, + NETDEV_XDP_ACT_HW_OFFLOAD_BIT, + NETDEV_XDP_ACT_RX_SG_BIT, + NETDEV_XDP_ACT_NDO_XMIT_SG_BIT +}; + +#define NETDEV_XDP_ACT_ABORTED BIT(NETDEV_XDP_ACT_ABORTED_BIT) +#define NETDEV_XDP_ACT_DROP BIT(NETDEV_XDP_ACT_DROP_BIT) +#define NETDEV_XDP_ACT_PASS BIT(NETDEV_XDP_ACT_PASS_BIT) +#define NETDEV_XDP_ACT_TX BIT(NETDEV_XDP_ACT_TX_BIT) +#define NETDEV_XDP_ACT_REDIRECT BIT(NETDEV_XDP_ACT_REDIRECT_BIT) +#define NETDEV_XDP_ACT_NDO_XMIT BIT(NETDEV_XDP_ACT_NDO_XMIT_BIT) +#define NETDEV_XDP_ACT_XSK_ZEROCOPY BIT(NETDEV_XDP_ACT_XSK_ZEROCOPY_BIT) +#define NETDEV_XDP_ACT_HW_OFFLOAD BIT(NETDEV_XDP_ACT_HW_OFFLOAD_BIT) +#define NETDEV_XDP_ACT_RX_SG BIT(NETDEV_XDP_ACT_RX_SG_BIT) +#define NETDEV_XDP_ACT_NDO_XMIT_SG BIT(NETDEV_XDP_ACT_NDO_XMIT_SG_BIT) + +#define NETDEV_XDP_ACT_BASIC (NETDEV_XDP_ACT_DROP | \ + NETDEV_XDP_ACT_PASS | \ + NETDEV_XDP_ACT_TX | \ + NETDEV_XDP_ACT_ABORTED) +#define NETDEV_XDP_ACT_FULL (NETDEV_XDP_ACT_BASIC | \ + NETDEV_XDP_ACT_REDIRECT) +#define NETDEV_XDP_ACT_ZC (NETDEV_XDP_ACT_FULL | \ + NETDEV_XDP_ACT_XSK_ZEROCOPY) + +enum { + NETDEV_A_DEV_IFINDEX = 1, + NETDEV_A_DEV_PAD, + NETDEV_A_DEV_XDP_FEATURES, + + __NETDEV_A_DEV_MAX, + NETDEV_A_DEV_MAX = (__NETDEV_A_DEV_MAX - 1) +}; + +enum { + NETDEV_CMD_DEV_GET = 1, + NETDEV_CMD_DEV_ADD_NTF, + NETDEV_CMD_DEV_DEL_NTF, + NETDEV_CMD_DEV_CHANGE_NTF, + + __NETDEV_CMD_MAX, + NETDEV_CMD_MAX = (__NETDEV_CMD_MAX - 1) +}; + +#define NETDEV_MCGRP_MGMT "mgmt" + +#endif /* _UAPI_LINUX_NETDEV_H */ diff --git a/net/core/Makefile b/net/core/Makefile index 10edd66a8a37..8f367813bc68 100644 --- a/net/core/Makefile +++ b/net/core/Makefile @@ -12,7 +12,8 @@ obj-$(CONFIG_SYSCTL) += sysctl_net_core.o obj-y += dev.o dev_addr_lists.o dst.o netevent.o \ neighbour.o rtnetlink.o utils.o link_watch.o filter.o \ sock_diag.o dev_ioctl.o tso.o sock_reuseport.o \ - fib_notifier.o xdp.o flow_offload.o gro.o + fib_notifier.o xdp.o flow_offload.o gro.o \ + netdev-genl.o netdev-genl-gen.o obj-$(CONFIG_NETDEV_ADDR_LIST_TEST) += dev_addr_lists_test.o diff --git a/net/core/netdev-genl-gen.c b/net/core/netdev-genl-gen.c new file mode 100644 index 000000000000..affb427c3b89 --- /dev/null +++ b/net/core/netdev-genl-gen.c @@ -0,0 +1,48 @@ +// SPDX-License-Identifier: BSD-3-Clause +/* Do not edit directly, auto-generated from: */ +/* Documentation/netlink/specs/netdev.yaml */ +/* YNL-GEN kernel source */ + +#include <net/netlink.h> +#include <net/genetlink.h> + +#include "netdev-genl-gen.h" + +#include <linux/netdev.h> + +// NETDEV_CMD_DEV_GET - do +static const struct nla_policy netdev_dev_get_nl_policy[NETDEV_A_DEV_IFINDEX + 1] = { + [NETDEV_A_DEV_IFINDEX] = NLA_POLICY_MIN(NLA_U32, 1), +}; + +// Ops table for netdev +static const struct genl_split_ops netdev_nl_ops[2] = { + { + .cmd = NETDEV_CMD_DEV_GET, + .doit = netdev_nl_dev_get_doit, + .policy = netdev_dev_get_nl_policy, + .maxattr = NETDEV_A_DEV_IFINDEX, + .flags = GENL_CMD_CAP_DO, + }, + { + .cmd = NETDEV_CMD_DEV_GET, + .dumpit = netdev_nl_dev_get_dumpit, + .flags = GENL_CMD_CAP_DUMP, + }, +}; + +static const struct genl_multicast_group netdev_nl_mcgrps[] = { + [NETDEV_NLGRP_MGMT] = { "mgmt", }, +}; + +struct genl_family netdev_nl_family __ro_after_init = { + .name = NETDEV_FAMILY_NAME, + .version = NETDEV_FAMILY_VERSION, + .netnsok = true, + .parallel_ops = true, + .module = THIS_MODULE, + .split_ops = netdev_nl_ops, + .n_split_ops = ARRAY_SIZE(netdev_nl_ops), + .mcgrps = netdev_nl_mcgrps, + .n_mcgrps = ARRAY_SIZE(netdev_nl_mcgrps), +}; diff --git a/net/core/netdev-genl-gen.h b/net/core/netdev-genl-gen.h new file mode 100644 index 000000000000..8bdbe61e9d74 --- /dev/null +++ b/net/core/netdev-genl-gen.h @@ -0,0 +1,23 @@ +// SPDX-License-Identifier: BSD-3-Clause +/* Do not edit directly, auto-generated from: */ +/* Documentation/netlink/specs/netdev.yaml */ +/* YNL-GEN kernel header */ + +#ifndef _LINUX_NETDEV_GEN_H +#define _LINUX_NETDEV_GEN_H + +#include <net/netlink.h> +#include <net/genetlink.h> + +#include <linux/netdev.h> + +int netdev_nl_dev_get_doit(struct sk_buff *skb, struct genl_info *info); +int netdev_nl_dev_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb); + +enum { + NETDEV_NLGRP_MGMT, +}; + +extern struct genl_family netdev_nl_family; + +#endif /* _LINUX_NETDEV_GEN_H */ diff --git a/net/core/netdev-genl.c b/net/core/netdev-genl.c new file mode 100644 index 000000000000..ad1751adb3c6 --- /dev/null +++ b/net/core/netdev-genl.c @@ -0,0 +1,178 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include <linux/netdevice.h> +#include <linux/notifier.h> +#include <linux/rtnetlink.h> +#include <net/net_namespace.h> +#include <net/sock.h> + +#include "netdev-genl-gen.h" + +static int +netdev_nl_dev_fill(struct net_device *netdev, struct sk_buff *rsp, + u32 portid, u32 seq, int flags, u32 cmd) +{ + void *hdr; + int err; + + hdr = genlmsg_put(rsp, portid, seq, &netdev_nl_family, flags, cmd); + if (!hdr) + return -EMSGSIZE; + + if (nla_put_u32(rsp, NETDEV_A_DEV_IFINDEX, netdev->ifindex) || + nla_put_u64_64bit(rsp, NETDEV_A_DEV_XDP_FEATURES, + netdev->xdp_features, NETDEV_A_DEV_PAD)) { + genlmsg_cancel(rsp, hdr); + return -EINVAL; + } + + genlmsg_end(rsp, hdr); + + return 0; +} + +static void +netdev_genl_dev_notify(struct net_device *netdev, int cmd) +{ + struct sk_buff *ntf; + + if (!genl_has_listeners(&netdev_nl_family, dev_net(netdev), + NETDEV_NLGRP_MGMT)) + return; + + ntf = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL); + if (!ntf) + return; + + if (netdev_nl_dev_fill(netdev, ntf, 0, 0, 0, cmd)) { + nlmsg_free(ntf); + return; + } + + genlmsg_multicast_netns(&netdev_nl_family, dev_net(netdev), ntf, + 0, NETDEV_NLGRP_MGMT, GFP_KERNEL); +} + +int netdev_nl_dev_get_doit(struct sk_buff *skb, struct genl_info *info) +{ + struct net_device *netdev; + struct sk_buff *rsp; + u32 ifindex; + int err; + + if (GENL_REQ_ATTR_CHECK(info, NETDEV_A_DEV_IFINDEX)) + return -EINVAL; + + ifindex = nla_get_u32(info->attrs[NETDEV_A_DEV_IFINDEX]); + + rsp = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL); + if (!rsp) + return -ENOMEM; + + rtnl_lock(); + + netdev = __dev_get_by_index(genl_info_net(info), ifindex); + if (netdev) + err = netdev_nl_dev_fill(netdev, rsp, info->snd_portid, + info->snd_seq, 0, info->genlhdr->cmd); + else + err = -ENODEV; + + rtnl_unlock(); + + if (err) + goto err_free_msg; + + return genlmsg_reply(rsp, info); + +err_free_msg: + nlmsg_free(rsp); + return err; +} + +int netdev_nl_dev_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb) +{ + struct net *net = sock_net(skb->sk); + struct net_device *netdev; + int idx = 0, s_idx; + int h, s_h; + int err; + + s_h = cb->args[0]; + s_idx = cb->args[1]; + + rtnl_lock(); + + for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { + struct hlist_head *head; + + idx = 0; + head = &net->dev_index_head[h]; + hlist_for_each_entry(netdev, head, index_hlist) { + if (idx < s_idx) + goto cont; + err = netdev_nl_dev_fill(netdev, skb, + NETLINK_CB(cb->skb).portid, + cb->nlh->nlmsg_seq, 0, + NETDEV_CMD_DEV_GET); + if (err < 0) + break; +cont: + idx++; + } + } + + rtnl_unlock(); + + if (err != -EMSGSIZE) + return err; + + cb->args[1] = idx; + cb->args[0] = h; + cb->seq = net->dev_base_seq; + nl_dump_check_consistent(cb, nlmsg_hdr(skb)); + + return skb->len; +} + +static int netdev_genl_netdevice_event(struct notifier_block *nb, + unsigned long event, void *ptr) +{ + struct net_device *netdev = netdev_notifier_info_to_dev(ptr); + + switch (event) { + case NETDEV_REGISTER: + netdev_genl_dev_notify(netdev, NETDEV_CMD_DEV_ADD_NTF); + break; + case NETDEV_UNREGISTER: + netdev_genl_dev_notify(netdev, NETDEV_CMD_DEV_DEL_NTF); + break; + } + + return NOTIFY_OK; +} + +static struct notifier_block netdev_genl_nb = { + .notifier_call = netdev_genl_netdevice_event, +}; + +static int __init netdev_genl_init(void) +{ + int err; + + err = register_netdevice_notifier(&netdev_genl_nb); + if (err) + return err; + + err = genl_register_family(&netdev_nl_family); + if (err) + goto err_unreg_ntf; + + return 0; + +err_unreg_ntf: + unregister_netdevice_notifier(&netdev_genl_nb); + return err; +} + +subsys_initcall(netdev_genl_init); diff --git a/tools/include/uapi/linux/netdev.h b/tools/include/uapi/linux/netdev.h new file mode 100644 index 000000000000..254fc336d469 --- /dev/null +++ b/tools/include/uapi/linux/netdev.h @@ -0,0 +1,66 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* Do not edit directly, auto-generated from: */ +/* Documentation/netlink/specs/netdev.yaml */ +/* YNL-GEN uapi header */ + +#ifndef _UAPI_LINUX_NETDEV_H +#define _UAPI_LINUX_NETDEV_H + +#define NETDEV_FAMILY_NAME "netdev" +#define NETDEV_FAMILY_VERSION 1 + +enum netdev_xdp_act { + NETDEV_XDP_ACT_ABORTED_BIT, + NETDEV_XDP_ACT_DROP_BIT, + NETDEV_XDP_ACT_PASS_BIT, + NETDEV_XDP_ACT_TX_BIT, + NETDEV_XDP_ACT_REDIRECT_BIT, + NETDEV_XDP_ACT_NDO_XMIT_BIT, + NETDEV_XDP_ACT_XSK_ZEROCOPY_BIT, + NETDEV_XDP_ACT_HW_OFFLOAD_BIT, + NETDEV_XDP_ACT_RX_SG_BIT, + NETDEV_XDP_ACT_NDO_XMIT_SG_BIT +}; + +#define NETDEV_XDP_ACT_ABORTED BIT(NETDEV_XDP_ACT_ABORTED_BIT) +#define NETDEV_XDP_ACT_DROP BIT(NETDEV_XDP_ACT_DROP_BIT) +#define NETDEV_XDP_ACT_PASS BIT(NETDEV_XDP_ACT_PASS_BIT) +#define NETDEV_XDP_ACT_TX BIT(NETDEV_XDP_ACT_TX_BIT) +#define NETDEV_XDP_ACT_REDIRECT BIT(NETDEV_XDP_ACT_REDIRECT_BIT) +#define NETDEV_XDP_ACT_NDO_XMIT BIT(NETDEV_XDP_ACT_NDO_XMIT_BIT) +#define NETDEV_XDP_ACT_XSK_ZEROCOPY BIT(NETDEV_XDP_ACT_XSK_ZEROCOPY_BIT) +#define NETDEV_XDP_ACT_HW_OFFLOAD BIT(NETDEV_XDP_ACT_HW_OFFLOAD_BIT) +#define NETDEV_XDP_ACT_RX_SG BIT(NETDEV_XDP_ACT_RX_SG_BIT) +#define NETDEV_XDP_ACT_NDO_XMIT_SG BIT(NETDEV_XDP_ACT_NDO_XMIT_SG_BIT) + +#define NETDEV_XDP_ACT_BASIC (NETDEV_XDP_ACT_DROP | \ + NETDEV_XDP_ACT_PASS | \ + NETDEV_XDP_ACT_TX | \ + NETDEV_XDP_ACT_ABORTED) +#define NETDEV_XDP_ACT_FULL (NETDEV_XDP_ACT_BASIC | \ + NETDEV_XDP_ACT_REDIRECT) +#define NETDEV_XDP_ACT_ZC (NETDEV_XDP_ACT_FULL | \ + NETDEV_XDP_ACT_XSK_ZEROCOPY) + +enum { + NETDEV_A_DEV_IFINDEX = 1, + NETDEV_A_DEV_PAD, + NETDEV_A_DEV_XDP_FEATURES, + + __NETDEV_A_DEV_MAX, + NETDEV_A_DEV_MAX = (__NETDEV_A_DEV_MAX - 1) +}; + +enum { + NETDEV_CMD_DEV_GET = 1, + NETDEV_CMD_DEV_ADD_NTF, + NETDEV_CMD_DEV_DEL_NTF, + NETDEV_CMD_DEV_CHANGE_NTF, + + __NETDEV_CMD_MAX, + NETDEV_CMD_MAX = (__NETDEV_CMD_MAX - 1) +}; + +#define NETDEV_MCGRP_MGMT "mgmt" + +#endif /* _UAPI_LINUX_NETDEV_H */

[bpf-next,1/7] netdev-genl: create a simple family for netdev stuff

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