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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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SPDX-License-Identifier: GPL-2.0-only
#include <net/netdev_lock.h>#include <net/netdev_queues.h>#include <net/sock.h>#include <linux/ethtool_netlink.h>#include <linux/phy_link_topology.h>#include <linux/pm_runtime.h>
#include "common.h"#include "module_fw.h"#include "netlink.h"
static struct genl_family ethtool_genl_family;
static bool ethnl_ok __read_mostly;
/* Serializes broadcast notification sequence allocation with the multicast * send, so that userspace observes nlmsg_seq monotonic in receive order * regardless of which lock the caller holds (rtnl or instance lock). */static DEFINE_MUTEX(ethnl_bcast_lock);static u32 ethnl_bcast_seq;
#define ETHTOOL_FLAGS_BASIC (ETHTOOL_FLAG_COMPACT_BITSETS | \ ETHTOOL_FLAG_OMIT_REPLY)#define ETHTOOL_FLAGS_STATS (ETHTOOL_FLAGS_BASIC | ETHTOOL_FLAG_STATS)
const struct nla_policy ethnl_header_policy[] = { [ETHTOOL_A_HEADER_DEV_INDEX] = { .type = NLA_U32 }, [ETHTOOL_A_HEADER_DEV_NAME] = { .type = NLA_NUL_STRING, .len = ALTIFNAMSIZ - 1 }, [ETHTOOL_A_HEADER_FLAGS] = NLA_POLICY_MASK(NLA_U32, ETHTOOL_FLAGS_BASIC),};
const struct nla_policy ethnl_header_policy_stats[] = { [ETHTOOL_A_HEADER_DEV_INDEX] = { .type = NLA_U32 }, [ETHTOOL_A_HEADER_DEV_NAME] = { .type = NLA_NUL_STRING, .len = ALTIFNAMSIZ - 1 }, [ETHTOOL_A_HEADER_FLAGS] = NLA_POLICY_MASK(NLA_U32, ETHTOOL_FLAGS_STATS),};
const struct nla_policy ethnl_header_policy_phy[] = { [ETHTOOL_A_HEADER_DEV_INDEX] = { .type = NLA_U32 }, [ETHTOOL_A_HEADER_DEV_NAME] = { .type = NLA_NUL_STRING, .len = ALTIFNAMSIZ - 1 }, [ETHTOOL_A_HEADER_FLAGS] = NLA_POLICY_MASK(NLA_U32, ETHTOOL_FLAGS_BASIC), [ETHTOOL_A_HEADER_PHY_INDEX] = NLA_POLICY_MIN(NLA_U32, 1),};
const struct nla_policy ethnl_header_policy_phy_stats[] = { [ETHTOOL_A_HEADER_DEV_INDEX] = { .type = NLA_U32 }, [ETHTOOL_A_HEADER_DEV_NAME] = { .type = NLA_NUL_STRING, .len = ALTIFNAMSIZ - 1 }, [ETHTOOL_A_HEADER_FLAGS] = NLA_POLICY_MASK(NLA_U32, ETHTOOL_FLAGS_STATS), [ETHTOOL_A_HEADER_PHY_INDEX] = NLA_POLICY_MIN(NLA_U32, 1),};
int ethnl_sock_priv_set(struct sk_buff *skb, struct net *net, u32 portid, enum ethnl_sock_type type){ struct ethnl_sock_priv *sk_priv;
sk_priv = genl_sk_priv_get(ðtool_genl_family, NETLINK_CB(skb).sk); if (IS_ERR(sk_priv)) return PTR_ERR(sk_priv);
sk_priv->net = net; sk_priv->portid = portid; sk_priv->type = type;
return 0;}
static void ethnl_sock_priv_destroy(void *priv){ struct ethnl_sock_priv *sk_priv = priv;
switch (sk_priv->type) { case ETHTOOL_SOCK_TYPE_MODULE_FW_FLASH: ethnl_module_fw_flash_sock_destroy(sk_priv); break; default: break; }}
int ethnl_ops_begin(struct net_device *dev){ int ret;
if (!dev) return -ENODEV;
if (dev->dev.parent) pm_runtime_get_sync(dev->dev.parent);
netdev_assert_locked_ops_compat(dev);
if (!netif_device_present(dev) || dev->reg_state >= NETREG_UNREGISTERING) { ret = -ENODEV; goto err; }
if (dev->ethtool_ops->begin) { ret = dev->ethtool_ops->begin(dev); if (ret) goto err; }
return 0;err: if (dev->dev.parent) pm_runtime_put(dev->dev.parent);
return ret;}
void ethnl_ops_complete(struct net_device *dev){ if (dev->ethtool_ops->complete) dev->ethtool_ops->complete(dev);
if (dev->dev.parent) pm_runtime_put(dev->dev.parent);}
/** * ethnl_parse_header_dev_get() - parse request header * @req_info: structure to put results into * @header: nest attribute with request header * @net: request netns * @extack: netlink extack for error reporting * @require_dev: fail if no device identified in header * * Parse request header in nested attribute @nest and puts results into * the structure pointed to by @req_info. Extack from @info is used for error * reporting. If req_info->dev is not null on return, reference to it has * been taken. If error is returned, *req_info is null initialized and no * reference is held. * * Return: 0 on success or negative error code */int ethnl_parse_header_dev_get(struct ethnl_req_info *req_info, const struct nlattr *header, struct net *net, struct netlink_ext_ack *extack, bool require_dev){ struct nlattr *tb[ARRAY_SIZE(ethnl_header_policy_phy)]; const struct nlattr *devname_attr; struct net_device *dev = NULL; u32 flags = 0; int ret;
if (!header) { if (!require_dev) return 0; NL_SET_ERR_MSG(extack, "request header missing"); return -EINVAL; } /* No validation here, command policy should have a nested policy set * for the header, therefore validation should have already been done. */ ret = nla_parse_nested(tb, ARRAY_SIZE(ethnl_header_policy_phy) - 1, header, NULL, extack); if (ret < 0) return ret; if (tb[ETHTOOL_A_HEADER_FLAGS]) flags = nla_get_u32(tb[ETHTOOL_A_HEADER_FLAGS]);
devname_attr = tb[ETHTOOL_A_HEADER_DEV_NAME]; if (tb[ETHTOOL_A_HEADER_DEV_INDEX]) { u32 ifindex = nla_get_u32(tb[ETHTOOL_A_HEADER_DEV_INDEX]);
dev = netdev_get_by_index(net, ifindex, &req_info->dev_tracker, GFP_KERNEL); if (!dev) { NL_SET_ERR_MSG_ATTR(extack, tb[ETHTOOL_A_HEADER_DEV_INDEX], "no device matches ifindex"); return -ENODEV; } /* if both ifindex and ifname are passed, they must match */ if (devname_attr && strncmp(dev->name, nla_data(devname_attr), IFNAMSIZ)) { netdev_put(dev, &req_info->dev_tracker); NL_SET_ERR_MSG_ATTR(extack, header, "ifindex and name do not match"); return -ENODEV; } } else if (devname_attr) { dev = netdev_get_by_name(net, nla_data(devname_attr), &req_info->dev_tracker, GFP_KERNEL); if (!dev) { NL_SET_ERR_MSG_ATTR(extack, devname_attr, "no device matches name"); return -ENODEV; } } else if (require_dev) { NL_SET_ERR_MSG_ATTR(extack, header, "neither ifindex nor name specified"); return -EINVAL; }
if (tb[ETHTOOL_A_HEADER_PHY_INDEX]) { if (dev) { req_info->phy_index = nla_get_u32(tb[ETHTOOL_A_HEADER_PHY_INDEX]); } else { NL_SET_ERR_MSG_ATTR(extack, header, "phy_index set without a netdev"); return -EINVAL; } }
req_info->dev = dev; req_info->flags = flags; return 0;}
struct phy_device *ethnl_req_get_phydev(const struct ethnl_req_info *req_info, struct nlattr **tb, unsigned int header, struct netlink_ext_ack *extack){ struct phy_device *phydev;
if (!req_info->dev) return NULL;
/* If there is no PHY in sight there's no need for assert locking */ if (!phy_link_topo_empty(req_info->dev)) ASSERT_RTNL();
if (!req_info->phy_index) return req_info->dev->phydev;
phydev = phy_link_topo_get_phy(req_info->dev, req_info->phy_index); if (!phydev && tb) { NL_SET_ERR_MSG_ATTR(extack, tb[header], "no phy matching phyindex"); return ERR_PTR(-ENODEV); }
return phydev;}
/** * ethnl_fill_reply_header() - Put common header into a reply message * @skb: skb with the message * @dev: network device to describe in header * @attrtype: attribute type to use for the nest * * Create a nested attribute with attributes describing given network device. * * Return: 0 on success, error value (-EMSGSIZE only) on error */int ethnl_fill_reply_header(struct sk_buff *skb, struct net_device *dev, u16 attrtype){ struct nlattr *nest;
if (!dev) return 0; nest = nla_nest_start(skb, attrtype); if (!nest) return -EMSGSIZE;
if (nla_put_u32(skb, ETHTOOL_A_HEADER_DEV_INDEX, (u32)dev->ifindex) || nla_put_string(skb, ETHTOOL_A_HEADER_DEV_NAME, dev->name)) goto nla_put_failure; /* If more attributes are put into reply header, ethnl_header_size() * must be updated to account for them. */
nla_nest_end(skb, nest); return 0;
nla_put_failure: nla_nest_cancel(skb, nest); return -EMSGSIZE;}
/** * ethnl_reply_init() - Create skb for a reply and fill device identification * @payload: payload length (without netlink and genetlink header) * @dev: device the reply is about (may be null) * @cmd: ETHTOOL_MSG_* message type for reply * @hdr_attrtype: attribute type for common header * @info: genetlink info of the received packet we respond to * @ehdrp: place to store payload pointer returned by genlmsg_new() * * Return: pointer to allocated skb on success, NULL on error */struct sk_buff *ethnl_reply_init(size_t payload, struct net_device *dev, u8 cmd, u16 hdr_attrtype, struct genl_info *info, void **ehdrp){ struct sk_buff *skb;
skb = genlmsg_new(payload, GFP_KERNEL); if (!skb) goto err; *ehdrp = genlmsg_put_reply(skb, info, ðtool_genl_family, 0, cmd); if (!*ehdrp) goto err_free;
if (dev) { int ret;
ret = ethnl_fill_reply_header(skb, dev, hdr_attrtype); if (ret < 0) goto err_free; } return skb;
err_free: nlmsg_free(skb);err: if (info) GENL_SET_ERR_MSG(info, "failed to setup reply message"); return NULL;}
void *ethnl_dump_put(struct sk_buff *skb, struct netlink_callback *cb, u8 cmd){ return genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, ðtool_genl_family, 0, cmd);}
void *ethnl_bcastmsg_put(struct sk_buff *skb, u8 cmd){ return genlmsg_put(skb, 0, 0, ðtool_genl_family, 0, cmd);}
void *ethnl_unicast_put(struct sk_buff *skb, u32 portid, u32 seq, u8 cmd){ return genlmsg_put(skb, portid, seq, ðtool_genl_family, 0, cmd);}
int ethnl_multicast(struct sk_buff *skb, struct net_device *dev){ struct nlmsghdr *nlh = nlmsg_hdr(skb); int ret;
mutex_lock(ðnl_bcast_lock); nlh->nlmsg_seq = ++ethnl_bcast_seq; ret = genlmsg_multicast_netns(ðtool_genl_family, dev_net(dev), skb, 0, ETHNL_MCGRP_MONITOR, GFP_KERNEL); mutex_unlock(ðnl_bcast_lock); return ret;}
/* GET request helpers */
/** * struct ethnl_dump_ctx - context structure for generic dumpit() callback * @ops: request ops of currently processed message type * @req_info: parsed request header of processed request * @reply_data: data needed to compose the reply * @pos_ifindex: saved iteration position - ifindex * * These parameters are kept in struct netlink_callback as context preserved * between iterations. They are initialized by ethnl_default_start() and used * in ethnl_default_dumpit() and ethnl_default_done(). */struct ethnl_dump_ctx { const struct ethnl_request_ops *ops; struct ethnl_req_info *req_info; struct ethnl_reply_data *reply_data; unsigned long pos_ifindex;};
/** * struct ethnl_perphy_dump_ctx - context for dumpit() PHY-aware callbacks * @ethnl_ctx: generic ethnl context * @ifindex: For Filtered DUMP requests, the ifindex of the targeted netdev * @pos_phyindex: iterator position for multi-msg DUMP */struct ethnl_perphy_dump_ctx { struct ethnl_dump_ctx ethnl_ctx; unsigned int ifindex; unsigned long pos_phyindex;};
static const struct ethnl_request_ops *ethnl_default_requests[__ETHTOOL_MSG_USER_CNT] = { [ETHTOOL_MSG_STRSET_GET] = ðnl_strset_request_ops, [ETHTOOL_MSG_LINKINFO_GET] = ðnl_linkinfo_request_ops, [ETHTOOL_MSG_LINKINFO_SET] = ðnl_linkinfo_request_ops, [ETHTOOL_MSG_LINKMODES_GET] = ðnl_linkmodes_request_ops, [ETHTOOL_MSG_LINKMODES_SET] = ðnl_linkmodes_request_ops, [ETHTOOL_MSG_LINKSTATE_GET] = ðnl_linkstate_request_ops, [ETHTOOL_MSG_DEBUG_GET] = ðnl_debug_request_ops, [ETHTOOL_MSG_DEBUG_SET] = ðnl_debug_request_ops, [ETHTOOL_MSG_WOL_GET] = ðnl_wol_request_ops, [ETHTOOL_MSG_WOL_SET] = ðnl_wol_request_ops, [ETHTOOL_MSG_FEATURES_GET] = ðnl_features_request_ops, [ETHTOOL_MSG_PRIVFLAGS_GET] = ðnl_privflags_request_ops, [ETHTOOL_MSG_PRIVFLAGS_SET] = ðnl_privflags_request_ops, [ETHTOOL_MSG_RINGS_GET] = ðnl_rings_request_ops, [ETHTOOL_MSG_RINGS_SET] = ðnl_rings_request_ops, [ETHTOOL_MSG_CHANNELS_GET] = ðnl_channels_request_ops, [ETHTOOL_MSG_CHANNELS_SET] = ðnl_channels_request_ops, [ETHTOOL_MSG_COALESCE_GET] = ðnl_coalesce_request_ops, [ETHTOOL_MSG_COALESCE_SET] = ðnl_coalesce_request_ops, [ETHTOOL_MSG_PAUSE_GET] = ðnl_pause_request_ops, [ETHTOOL_MSG_PAUSE_SET] = ðnl_pause_request_ops, [ETHTOOL_MSG_EEE_GET] = ðnl_eee_request_ops, [ETHTOOL_MSG_EEE_SET] = ðnl_eee_request_ops, [ETHTOOL_MSG_FEC_GET] = ðnl_fec_request_ops, [ETHTOOL_MSG_FEC_SET] = ðnl_fec_request_ops, [ETHTOOL_MSG_TSINFO_GET] = ðnl_tsinfo_request_ops, [ETHTOOL_MSG_MODULE_EEPROM_GET] = ðnl_module_eeprom_request_ops, [ETHTOOL_MSG_STATS_GET] = ðnl_stats_request_ops, [ETHTOOL_MSG_PHC_VCLOCKS_GET] = ðnl_phc_vclocks_request_ops, [ETHTOOL_MSG_MODULE_GET] = ðnl_module_request_ops, [ETHTOOL_MSG_MODULE_SET] = ðnl_module_request_ops, [ETHTOOL_MSG_PSE_GET] = ðnl_pse_request_ops, [ETHTOOL_MSG_PSE_SET] = ðnl_pse_request_ops, [ETHTOOL_MSG_RSS_GET] = ðnl_rss_request_ops, [ETHTOOL_MSG_RSS_SET] = ðnl_rss_request_ops, [ETHTOOL_MSG_PLCA_GET_CFG] = ðnl_plca_cfg_request_ops, [ETHTOOL_MSG_PLCA_SET_CFG] = ðnl_plca_cfg_request_ops, [ETHTOOL_MSG_PLCA_GET_STATUS] = ðnl_plca_status_request_ops, [ETHTOOL_MSG_MM_GET] = ðnl_mm_request_ops, [ETHTOOL_MSG_MM_SET] = ðnl_mm_request_ops, [ETHTOOL_MSG_TSCONFIG_GET] = ðnl_tsconfig_request_ops, [ETHTOOL_MSG_TSCONFIG_SET] = ðnl_tsconfig_request_ops, [ETHTOOL_MSG_PHY_GET] = ðnl_phy_request_ops, [ETHTOOL_MSG_MSE_GET] = ðnl_mse_request_ops,};
static struct ethnl_dump_ctx *ethnl_dump_context(struct netlink_callback *cb){ return (struct ethnl_dump_ctx *)cb->ctx;}
static struct ethnl_perphy_dump_ctx *ethnl_perphy_dump_context(struct netlink_callback *cb){ return (struct ethnl_perphy_dump_ctx *)cb->ctx;}
/** * ethnl_default_parse() - Parse request message * @req_info: pointer to structure to put data into * @info: genl_info from the request * @request_ops: struct request_ops for request type * @require_dev: fail if no device identified in header * * Parse universal request header and call request specific ->parse_request() * callback (if defined) to parse the rest of the message. * * Return: 0 on success or negative error code */static int ethnl_default_parse(struct ethnl_req_info *req_info, const struct genl_info *info, const struct ethnl_request_ops *request_ops, bool require_dev){ struct nlattr **tb = info->attrs; int ret;
ret = ethnl_parse_header_dev_get(req_info, tb[request_ops->hdr_attr], genl_info_net(info), info->extack, require_dev); if (ret < 0) return ret;
if (request_ops->parse_request) { ret = request_ops->parse_request(req_info, info, tb, info->extack); if (ret < 0) goto err_dev; }
return 0;
err_dev: netdev_put(req_info->dev, &req_info->dev_tracker); req_info->dev = NULL; return ret;}
/** * ethnl_init_reply_data() - Initialize reply data for GET request * @reply_data: pointer to embedded struct ethnl_reply_data * @ops: instance of struct ethnl_request_ops describing the layout * @dev: network device to initialize the reply for * * Fills the reply data part with zeros and sets the dev member. Must be called * before calling the ->fill_reply() callback (for each iteration when handling * dump requests). */static void ethnl_init_reply_data(struct ethnl_reply_data *reply_data, const struct ethnl_request_ops *ops, struct net_device *dev){ memset(reply_data, 0, ops->reply_data_size); reply_data->dev = dev;}
/* default ->doit() handler for GET type requests */static int ethnl_default_doit(struct sk_buff *skb, struct genl_info *info){ struct ethnl_reply_data *reply_data = NULL; struct ethnl_req_info *req_info = NULL; const u8 cmd = info->genlhdr->cmd; const struct ethnl_request_ops *ops; bool need_rtnl = false; int hdr_len, reply_len; struct sk_buff *rskb; void *reply_payload; int ret;
ops = ethnl_default_requests[cmd]; if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", cmd)) return -EOPNOTSUPP; if (GENL_REQ_ATTR_CHECK(info, ops->hdr_attr)) return -EINVAL;
req_info = kzalloc(ops->req_info_size, GFP_KERNEL); if (!req_info) return -ENOMEM; reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); if (!reply_data) { kfree(req_info); return -ENOMEM; }
ret = ethnl_default_parse(req_info, info, ops, !ops->allow_nodev_do); if (ret < 0) goto err_free; ethnl_init_reply_data(reply_data, ops, req_info->dev);
if (req_info->dev) { need_rtnl = !netdev_need_ops_lock(req_info->dev) || ethtool_nl_msg_needs_rtnl(req_info->dev, cmd); if (need_rtnl) rtnl_lock(); netdev_lock_ops(req_info->dev); } ret = ops->prepare_data(req_info, reply_data, info); if (req_info->dev) { netdev_unlock_ops(req_info->dev); if (need_rtnl) rtnl_unlock(); } if (ret < 0) goto err_dev; ret = ops->reply_size(req_info, reply_data); if (ret < 0) goto err_cleanup; reply_len = ret; ret = -ENOMEM; rskb = ethnl_reply_init(reply_len + ethnl_reply_header_size(), req_info->dev, ops->reply_cmd, ops->hdr_attr, info, &reply_payload); if (!rskb) goto err_cleanup; hdr_len = rskb->len; ret = ops->fill_reply(rskb, req_info, reply_data); if (ret < 0) goto err_msg; WARN_ONCE(rskb->len - hdr_len > reply_len, "ethnl cmd %d: calculated reply length %d, but consumed %d\n", cmd, reply_len, rskb->len - hdr_len); if (ops->cleanup_data) ops->cleanup_data(reply_data);
genlmsg_end(rskb, reply_payload); netdev_put(req_info->dev, &req_info->dev_tracker); kfree(reply_data); kfree(req_info); return genlmsg_reply(rskb, info);
err_msg: WARN_ONCE(ret == -EMSGSIZE, "calculated message payload length (%d) not sufficient\n", reply_len); nlmsg_free(rskb);err_cleanup: if (ops->cleanup_data) ops->cleanup_data(reply_data);err_dev: netdev_put(req_info->dev, &req_info->dev_tracker);err_free: kfree(reply_data); kfree(req_info); return ret;}
static int ethnl_default_dump_one(struct sk_buff *skb, struct net_device *dev, const struct ethnl_dump_ctx *ctx, const struct genl_info *info){ bool need_rtnl; void *ehdr; int ret;
ehdr = genlmsg_put(skb, info->snd_portid, info->snd_seq, ðtool_genl_family, NLM_F_MULTI, ctx->ops->reply_cmd); if (!ehdr) return -EMSGSIZE;
ethnl_init_reply_data(ctx->reply_data, ctx->ops, dev); need_rtnl = !netdev_need_ops_lock(dev) || ethtool_nl_msg_needs_rtnl(dev, ctx->ops->request_cmd); if (need_rtnl) rtnl_lock(); netdev_lock_ops(dev); ret = ctx->ops->prepare_data(ctx->req_info, ctx->reply_data, info); netdev_unlock_ops(dev); if (need_rtnl) rtnl_unlock(); if (ret < 0) goto out_cancel; ret = ethnl_fill_reply_header(skb, dev, ctx->ops->hdr_attr); if (ret < 0) goto out; ret = ctx->ops->fill_reply(skb, ctx->req_info, ctx->reply_data);
out: if (ctx->ops->cleanup_data) ctx->ops->cleanup_data(ctx->reply_data);out_cancel: ctx->reply_data->dev = NULL; if (ret < 0) genlmsg_cancel(skb, ehdr); else genlmsg_end(skb, ehdr); return ret;}
/* Default ->dumpit() handler for GET requests. */static int ethnl_default_dumpit(struct sk_buff *skb, struct netlink_callback *cb){ struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); struct net *net = sock_net(skb->sk); netdevice_tracker dev_tracker; struct net_device *dev; int ret = 0;
rcu_read_lock(); for_each_netdev_dump(net, dev, ctx->pos_ifindex) { netdev_hold(dev, &dev_tracker, GFP_ATOMIC); rcu_read_unlock();
ret = ethnl_default_dump_one(skb, dev, ctx, genl_info_dump(cb));
rcu_read_lock(); netdev_put(dev, &dev_tracker);
if (ret < 0 && ret != -EOPNOTSUPP) { if (likely(skb->len)) ret = skb->len; break; } ret = 0; } rcu_read_unlock();
return ret;}
/* generic ->start() handler for GET requests */static int ethnl_default_start(struct netlink_callback *cb){ const struct genl_dumpit_info *info = genl_dumpit_info(cb); struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); struct ethnl_reply_data *reply_data; const struct ethnl_request_ops *ops; struct ethnl_req_info *req_info; struct genlmsghdr *ghdr; int ret;
BUILD_BUG_ON(sizeof(*ctx) > sizeof(cb->ctx));
ghdr = nlmsg_data(cb->nlh); ops = ethnl_default_requests[ghdr->cmd]; if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", ghdr->cmd)) return -EOPNOTSUPP; req_info = kzalloc(ops->req_info_size, GFP_KERNEL); if (!req_info) return -ENOMEM; reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); if (!reply_data) { ret = -ENOMEM; goto free_req_info; }
ret = ethnl_default_parse(req_info, &info->info, ops, false); if (ret < 0) goto free_reply_data; if (req_info->dev) { /* We ignore device specification in dump requests but as the * same parser as for non-dump (doit) requests is used, it * would take reference to the device if it finds one */ netdev_put(req_info->dev, &req_info->dev_tracker); req_info->dev = NULL; }
ctx->ops = ops; ctx->req_info = req_info; ctx->reply_data = reply_data; ctx->pos_ifindex = 0;
return 0;
free_reply_data: kfree(reply_data);free_req_info: kfree(req_info);
return ret;}
/* per-PHY ->start() handler for GET requests */static int ethnl_perphy_start(struct netlink_callback *cb){ struct ethnl_perphy_dump_ctx *phy_ctx = ethnl_perphy_dump_context(cb); const struct genl_dumpit_info *info = genl_dumpit_info(cb); struct ethnl_dump_ctx *ctx = &phy_ctx->ethnl_ctx; struct ethnl_reply_data *reply_data; const struct ethnl_request_ops *ops; struct ethnl_req_info *req_info; struct genlmsghdr *ghdr; int ret;
BUILD_BUG_ON(sizeof(*ctx) > sizeof(cb->ctx));
ghdr = nlmsg_data(cb->nlh); ops = ethnl_default_requests[ghdr->cmd]; if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", ghdr->cmd)) return -EOPNOTSUPP; req_info = kzalloc(ops->req_info_size, GFP_KERNEL); if (!req_info) return -ENOMEM; reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); if (!reply_data) { ret = -ENOMEM; goto free_req_info; }
/* Unlike per-dev dump, don't ignore dev. The dump handler * will notice it and dump PHYs from given dev. We only keep track of * the dev's ifindex, .dumpit() will grab and release the netdev itself. */ ret = ethnl_default_parse(req_info, &info->info, ops, false); if (ret < 0) goto free_reply_data; if (req_info->dev) { phy_ctx->ifindex = req_info->dev->ifindex; netdev_put(req_info->dev, &req_info->dev_tracker); req_info->dev = NULL; }
ctx->ops = ops; ctx->req_info = req_info; ctx->reply_data = reply_data; ctx->pos_ifindex = 0;
return 0;
free_reply_data: kfree(reply_data);free_req_info: kfree(req_info);
return ret;}
static int ethnl_perphy_dump_one_dev(struct sk_buff *skb, struct ethnl_perphy_dump_ctx *ctx, const struct genl_info *info){ struct ethnl_dump_ctx *ethnl_ctx = &ctx->ethnl_ctx; struct net_device *dev = ethnl_ctx->req_info->dev; struct phy_device_node *pdn; int ret;
if (!dev->link_topo) return 0;
xa_for_each_start(&dev->link_topo->phys, ctx->pos_phyindex, pdn, ctx->pos_phyindex) { ethnl_ctx->req_info->phy_index = ctx->pos_phyindex;
/* We can re-use the original dump_one as ->prepare_data in * commands use ethnl_req_get_phydev(), which gets the PHY from * the req_info->phy_index */ ret = ethnl_default_dump_one(skb, dev, ethnl_ctx, info); if (ret) return ret; }
ctx->pos_phyindex = 0;
return 0;}
static int ethnl_perphy_dump_all_dev(struct sk_buff *skb, struct ethnl_perphy_dump_ctx *ctx, const struct genl_info *info){ struct ethnl_dump_ctx *ethnl_ctx = &ctx->ethnl_ctx; struct net *net = sock_net(skb->sk); netdevice_tracker dev_tracker; struct net_device *dev; int ret = 0;
rcu_read_lock(); for_each_netdev_dump(net, dev, ethnl_ctx->pos_ifindex) { netdev_hold(dev, &dev_tracker, GFP_ATOMIC); rcu_read_unlock();
/* per-PHY commands use ethnl_req_get_phydev(), which needs the * net_device in the req_info */ ethnl_ctx->req_info->dev = dev; ret = ethnl_perphy_dump_one_dev(skb, ctx, info);
rcu_read_lock(); netdev_put(dev, &dev_tracker); ethnl_ctx->req_info->dev = NULL;
if (ret < 0 && ret != -EOPNOTSUPP) { if (likely(skb->len)) ret = skb->len; break; } ret = 0; } rcu_read_unlock();
return ret;}
/* per-PHY ->dumpit() handler for GET requests. */static int ethnl_perphy_dumpit(struct sk_buff *skb, struct netlink_callback *cb){ struct ethnl_perphy_dump_ctx *ctx = ethnl_perphy_dump_context(cb); const struct genl_dumpit_info *info = genl_dumpit_info(cb); struct ethnl_dump_ctx *ethnl_ctx = &ctx->ethnl_ctx; int ret = 0;
if (ctx->ifindex) { netdevice_tracker dev_tracker; struct net_device *dev;
dev = netdev_get_by_index(genl_info_net(&info->info), ctx->ifindex, &dev_tracker, GFP_KERNEL); if (!dev) return -ENODEV;
ethnl_ctx->req_info->dev = dev; ret = ethnl_perphy_dump_one_dev(skb, ctx, genl_info_dump(cb));
if (ret < 0 && ret != -EOPNOTSUPP && likely(skb->len)) ret = skb->len;
netdev_put(dev, &dev_tracker); } else { ret = ethnl_perphy_dump_all_dev(skb, ctx, genl_info_dump(cb)); }
return ret;}
/* per-PHY ->done() handler for GET requests */static int ethnl_perphy_done(struct netlink_callback *cb){ struct ethnl_perphy_dump_ctx *ctx = ethnl_perphy_dump_context(cb); struct ethnl_dump_ctx *ethnl_ctx = &ctx->ethnl_ctx;
kfree(ethnl_ctx->reply_data); kfree(ethnl_ctx->req_info);
return 0;}
/* default ->done() handler for GET requests */static int ethnl_default_done(struct netlink_callback *cb){ struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb);
kfree(ctx->reply_data); kfree(ctx->req_info);
return 0;}
static int ethnl_default_set_doit(struct sk_buff *skb, struct genl_info *info){ const struct ethnl_request_ops *ops; const u8 cmd = info->genlhdr->cmd; struct ethnl_req_info *req_info; struct net_device *dev; bool need_rtnl; int ret;
ops = ethnl_default_requests[cmd]; if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", cmd)) return -EOPNOTSUPP; if (GENL_REQ_ATTR_CHECK(info, ops->hdr_attr)) return -EINVAL;
req_info = kzalloc(ops->req_info_size, GFP_KERNEL); if (!req_info) return -ENOMEM;
ret = ethnl_default_parse(req_info, info, ops, true); if (ret < 0) goto out_free_req;
if (ops->set_validate) { ret = ops->set_validate(req_info, info); /* 0 means nothing to do */ if (ret <= 0) goto out_dev; }
dev = req_info->dev; need_rtnl = !netdev_need_ops_lock(dev) || ethtool_nl_msg_needs_rtnl(dev, cmd);
if (need_rtnl) rtnl_lock(); netdev_lock_ops(dev); dev->cfg_pending = kmemdup(dev->cfg, sizeof(*dev->cfg), GFP_KERNEL_ACCOUNT); if (!dev->cfg_pending) { ret = -ENOMEM; goto out_tie_cfg; }
ret = ethnl_ops_begin(dev); if (ret < 0) goto out_free_cfg;
ret = ops->set(req_info, info); if (ret < 0) goto out_ops;
swap(dev->cfg, dev->cfg_pending); if (!ret) goto out_ops; ethnl_notify(dev, ops->set_ntf_cmd, req_info);
ret = 0;out_ops: ethnl_ops_complete(dev);out_free_cfg: kfree(dev->cfg_pending);out_tie_cfg: dev->cfg_pending = dev->cfg; netdev_unlock_ops(dev); if (need_rtnl) rtnl_unlock();out_dev: ethnl_parse_header_dev_put(req_info);out_free_req: kfree(req_info); return ret;}
static const struct ethnl_request_ops *ethnl_default_notify_ops[ETHTOOL_MSG_KERNEL_MAX + 1] = { [ETHTOOL_MSG_LINKINFO_NTF] = ðnl_linkinfo_request_ops, [ETHTOOL_MSG_LINKMODES_NTF] = ðnl_linkmodes_request_ops, [ETHTOOL_MSG_DEBUG_NTF] = ðnl_debug_request_ops, [ETHTOOL_MSG_WOL_NTF] = ðnl_wol_request_ops, [ETHTOOL_MSG_FEATURES_NTF] = ðnl_features_request_ops, [ETHTOOL_MSG_PRIVFLAGS_NTF] = ðnl_privflags_request_ops, [ETHTOOL_MSG_RINGS_NTF] = ðnl_rings_request_ops, [ETHTOOL_MSG_CHANNELS_NTF] = ðnl_channels_request_ops, [ETHTOOL_MSG_COALESCE_NTF] = ðnl_coalesce_request_ops, [ETHTOOL_MSG_PAUSE_NTF] = ðnl_pause_request_ops, [ETHTOOL_MSG_EEE_NTF] = ðnl_eee_request_ops, [ETHTOOL_MSG_FEC_NTF] = ðnl_fec_request_ops, [ETHTOOL_MSG_MODULE_NTF] = ðnl_module_request_ops, [ETHTOOL_MSG_PLCA_NTF] = ðnl_plca_cfg_request_ops, [ETHTOOL_MSG_MM_NTF] = ðnl_mm_request_ops, [ETHTOOL_MSG_RSS_NTF] = ðnl_rss_request_ops, [ETHTOOL_MSG_RSS_CREATE_NTF] = ðnl_rss_request_ops,};
/* default notification handler */static void ethnl_default_notify(struct net_device *dev, unsigned int cmd, const struct ethnl_req_info *orig_req_info){ struct ethnl_reply_data *reply_data; const struct ethnl_request_ops *ops; struct ethnl_req_info *req_info; struct genl_info info; struct sk_buff *skb; void *reply_payload; int reply_len; int ret;
genl_info_init_ntf(&info, ðtool_genl_family, cmd);
if (WARN_ONCE(cmd > ETHTOOL_MSG_KERNEL_MAX || !ethnl_default_notify_ops[cmd], "unexpected notification type %u\n", cmd)) return; ops = ethnl_default_notify_ops[cmd]; req_info = kzalloc(ops->req_info_size, GFP_KERNEL); if (!req_info) return; reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); if (!reply_data) { kfree(req_info); return; }
req_info->dev = dev; req_info->flags |= ETHTOOL_FLAG_COMPACT_BITSETS; if (orig_req_info) { req_info->phy_index = orig_req_info->phy_index; memcpy(&req_info[1], &orig_req_info[1], ops->req_info_size - sizeof(*req_info)); }
netdev_assert_locked_ops_compat(dev);
ethnl_init_reply_data(reply_data, ops, dev); ret = ops->prepare_data(req_info, reply_data, &info); if (ret < 0) goto err_rep; ret = ops->reply_size(req_info, reply_data); if (ret < 0) goto err_cleanup; reply_len = ret + ethnl_reply_header_size(); skb = genlmsg_new(reply_len, GFP_KERNEL); if (!skb) goto err_cleanup; reply_payload = ethnl_bcastmsg_put(skb, cmd); if (!reply_payload) goto err_skb; ret = ethnl_fill_reply_header(skb, dev, ops->hdr_attr); if (ret < 0) goto err_msg; ret = ops->fill_reply(skb, req_info, reply_data); if (ret < 0) goto err_msg; if (ops->cleanup_data) ops->cleanup_data(reply_data);
genlmsg_end(skb, reply_payload); kfree(reply_data); kfree(req_info); ethnl_multicast(skb, dev); return;
err_msg: WARN_ONCE(ret == -EMSGSIZE, "calculated message payload length (%d) not sufficient\n", reply_len);err_skb: nlmsg_free(skb);err_cleanup: if (ops->cleanup_data) ops->cleanup_data(reply_data);err_rep: kfree(reply_data); kfree(req_info); return;}
/* notifications */
typedef void (*ethnl_notify_handler_t)(struct net_device *dev, unsigned int cmd, const struct ethnl_req_info *req_info);
static const ethnl_notify_handler_t ethnl_notify_handlers[] = { [ETHTOOL_MSG_LINKINFO_NTF] = ethnl_default_notify, [ETHTOOL_MSG_LINKMODES_NTF] = ethnl_default_notify, [ETHTOOL_MSG_DEBUG_NTF] = ethnl_default_notify, [ETHTOOL_MSG_WOL_NTF] = ethnl_default_notify, [ETHTOOL_MSG_FEATURES_NTF] = ethnl_default_notify, [ETHTOOL_MSG_PRIVFLAGS_NTF] = ethnl_default_notify, [ETHTOOL_MSG_RINGS_NTF] = ethnl_default_notify, [ETHTOOL_MSG_CHANNELS_NTF] = ethnl_default_notify, [ETHTOOL_MSG_COALESCE_NTF] = ethnl_default_notify, [ETHTOOL_MSG_PAUSE_NTF] = ethnl_default_notify, [ETHTOOL_MSG_EEE_NTF] = ethnl_default_notify, [ETHTOOL_MSG_FEC_NTF] = ethnl_default_notify, [ETHTOOL_MSG_MODULE_NTF] = ethnl_default_notify, [ETHTOOL_MSG_PLCA_NTF] = ethnl_default_notify, [ETHTOOL_MSG_MM_NTF] = ethnl_default_notify, [ETHTOOL_MSG_RSS_NTF] = ethnl_default_notify, [ETHTOOL_MSG_RSS_CREATE_NTF] = ethnl_default_notify,};
void ethnl_notify(struct net_device *dev, unsigned int cmd, const struct ethnl_req_info *req_info){ if (unlikely(!ethnl_ok)) return; netdev_assert_locked_ops_compat(dev);
if (likely(cmd < ARRAY_SIZE(ethnl_notify_handlers) && ethnl_notify_handlers[cmd])) ethnl_notify_handlers[cmd](dev, cmd, req_info); else WARN_ONCE(1, "notification %u not implemented (dev=%s)\n", cmd, netdev_name(dev));}
void ethtool_notify(struct net_device *dev, unsigned int cmd){ ethnl_notify(dev, cmd, NULL);}EXPORT_SYMBOL(ethtool_notify);
static void ethnl_notify_features(struct netdev_notifier_info *info){ struct net_device *dev = netdev_notifier_info_to_dev(info);
ethtool_notify(dev, ETHTOOL_MSG_FEATURES_NTF);}
static int ethnl_netdev_event(struct notifier_block *this, unsigned long event, void *ptr){ struct netdev_notifier_info *info = ptr; struct netlink_ext_ack *extack; struct net_device *dev;
dev = netdev_notifier_info_to_dev(info); extack = netdev_notifier_info_to_extack(info);
switch (event) { case NETDEV_FEAT_CHANGE: ethnl_notify_features(ptr); break; case NETDEV_PRE_UP: if (dev->ethtool->module_fw_flash_in_progress) { NL_SET_ERR_MSG(extack, "Can't set port up while flashing module firmware"); return NOTIFY_BAD; } }
return NOTIFY_DONE;}
static struct notifier_block ethnl_netdev_notifier = { .notifier_call = ethnl_netdev_event,};
/* genetlink setup */
static const struct genl_ops ethtool_genl_ops[] = { { .cmd = ETHTOOL_MSG_STRSET_GET, .doit = ethnl_default_doit, .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, .policy = ethnl_strset_get_policy, .maxattr = ARRAY_SIZE(ethnl_strset_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_LINKINFO_GET, .doit = ethnl_default_doit, .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, .policy = ethnl_linkinfo_get_policy, .maxattr = ARRAY_SIZE(ethnl_linkinfo_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_LINKINFO_SET, .flags = GENL_UNS_ADMIN_PERM, .doit = ethnl_default_set_doit, .policy = ethnl_linkinfo_set_policy, .maxattr = ARRAY_SIZE(ethnl_linkinfo_set_policy) - 1, }, { .cmd = ETHTOOL_MSG_LINKMODES_GET, .doit = ethnl_default_doit, .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, .policy = ethnl_linkmodes_get_policy, .maxattr = ARRAY_SIZE(ethnl_linkmodes_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_LINKMODES_SET, .flags = GENL_UNS_ADMIN_PERM, .doit = ethnl_default_set_doit, .policy = ethnl_linkmodes_set_policy, .maxattr = ARRAY_SIZE(ethnl_linkmodes_set_policy) - 1, }, { .cmd = ETHTOOL_MSG_LINKSTATE_GET, .doit = ethnl_default_doit, .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, .policy = ethnl_linkstate_get_policy, .maxattr = ARRAY_SIZE(ethnl_linkstate_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_DEBUG_GET, .doit = ethnl_default_doit, .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, .policy = ethnl_debug_get_policy, .maxattr = ARRAY_SIZE(ethnl_debug_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_DEBUG_SET, .flags = GENL_UNS_ADMIN_PERM, .doit = ethnl_default_set_doit, .policy = ethnl_debug_set_policy, .maxattr = ARRAY_SIZE(ethnl_debug_set_policy) - 1, }, { .cmd = ETHTOOL_MSG_WOL_GET, .flags = GENL_UNS_ADMIN_PERM, .doit = ethnl_default_doit, .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, .policy = ethnl_wol_get_policy, .maxattr = ARRAY_SIZE(ethnl_wol_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_WOL_SET, .flags = GENL_UNS_ADMIN_PERM, .doit = ethnl_default_set_doit, .policy = ethnl_wol_set_policy, .maxattr = ARRAY_SIZE(ethnl_wol_set_policy) - 1, }, { .cmd = ETHTOOL_MSG_FEATURES_GET, .doit = ethnl_default_doit, .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, .policy = ethnl_features_get_policy, .maxattr = ARRAY_SIZE(ethnl_features_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_FEATURES_SET, .flags = GENL_UNS_ADMIN_PERM, .doit = ethnl_set_features, .policy = ethnl_features_set_policy, .maxattr = ARRAY_SIZE(ethnl_features_set_policy) - 1, }, { .cmd = ETHTOOL_MSG_PRIVFLAGS_GET, .doit = ethnl_default_doit, .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, .policy = ethnl_privflags_get_policy, .maxattr = ARRAY_SIZE(ethnl_privflags_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_PRIVFLAGS_SET, .flags = GENL_UNS_ADMIN_PERM, .doit = ethnl_default_set_doit, .policy = ethnl_privflags_set_policy, .maxattr = ARRAY_SIZE(ethnl_privflags_set_policy) - 1, }, { .cmd = ETHTOOL_MSG_RINGS_GET, .doit = ethnl_default_doit, .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, .policy = ethnl_rings_get_policy, .maxattr = ARRAY_SIZE(ethnl_rings_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_RINGS_SET, .flags = GENL_UNS_ADMIN_PERM, .doit = ethnl_default_set_doit, .policy = ethnl_rings_set_policy, .maxattr = ARRAY_SIZE(ethnl_rings_set_policy) - 1, }, { .cmd = ETHTOOL_MSG_CHANNELS_GET, .doit = ethnl_default_doit, .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, .policy = ethnl_channels_get_policy, .maxattr = ARRAY_SIZE(ethnl_channels_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_CHANNELS_SET, .flags = GENL_UNS_ADMIN_PERM, .doit = ethnl_default_set_doit, .policy = ethnl_channels_set_policy, .maxattr = ARRAY_SIZE(ethnl_channels_set_policy) - 1, }, { .cmd = ETHTOOL_MSG_COALESCE_GET, .doit = ethnl_default_doit, .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, .policy = ethnl_coalesce_get_policy, .maxattr = ARRAY_SIZE(ethnl_coalesce_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_COALESCE_SET, .flags = GENL_UNS_ADMIN_PERM, .doit = ethnl_default_set_doit, .policy = ethnl_coalesce_set_policy, .maxattr = ARRAY_SIZE(ethnl_coalesce_set_policy) - 1, }, { .cmd = ETHTOOL_MSG_PAUSE_GET, .doit = ethnl_default_doit, .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, .policy = ethnl_pause_get_policy, .maxattr = ARRAY_SIZE(ethnl_pause_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_PAUSE_SET, .flags = GENL_UNS_ADMIN_PERM, .doit = ethnl_default_set_doit, .policy = ethnl_pause_set_policy, .maxattr = ARRAY_SIZE(ethnl_pause_set_policy) - 1, }, { .cmd = ETHTOOL_MSG_EEE_GET, .doit = ethnl_default_doit, .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, .policy = ethnl_eee_get_policy, .maxattr = ARRAY_SIZE(ethnl_eee_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_EEE_SET, .flags = GENL_UNS_ADMIN_PERM, .doit = ethnl_default_set_doit, .policy = ethnl_eee_set_policy, .maxattr = ARRAY_SIZE(ethnl_eee_set_policy) - 1, }, { .cmd = ETHTOOL_MSG_TSINFO_GET, .doit = ethnl_default_doit, .start = ethnl_tsinfo_start, .dumpit = ethnl_tsinfo_dumpit, .done = ethnl_tsinfo_done, .policy = ethnl_tsinfo_get_policy, .maxattr = ARRAY_SIZE(ethnl_tsinfo_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_CABLE_TEST_ACT, .flags = GENL_UNS_ADMIN_PERM, .doit = ethnl_act_cable_test, .policy = ethnl_cable_test_act_policy, .maxattr = ARRAY_SIZE(ethnl_cable_test_act_policy) - 1, }, { .cmd = ETHTOOL_MSG_CABLE_TEST_TDR_ACT, .flags = GENL_UNS_ADMIN_PERM, .doit = ethnl_act_cable_test_tdr, .policy = ethnl_cable_test_tdr_act_policy, .maxattr = ARRAY_SIZE(ethnl_cable_test_tdr_act_policy) - 1, }, { .cmd = ETHTOOL_MSG_TUNNEL_INFO_GET, .doit = ethnl_tunnel_info_doit, .start = ethnl_tunnel_info_start, .dumpit = ethnl_tunnel_info_dumpit, .policy = ethnl_tunnel_info_get_policy, .maxattr = ARRAY_SIZE(ethnl_tunnel_info_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_FEC_GET, .doit = ethnl_default_doit, .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, .policy = ethnl_fec_get_policy, .maxattr = ARRAY_SIZE(ethnl_fec_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_FEC_SET, .flags = GENL_UNS_ADMIN_PERM, .doit = ethnl_default_set_doit, .policy = ethnl_fec_set_policy, .maxattr = ARRAY_SIZE(ethnl_fec_set_policy) - 1, }, { .cmd = ETHTOOL_MSG_MODULE_EEPROM_GET, .flags = GENL_UNS_ADMIN_PERM, .doit = ethnl_default_doit, .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, .policy = ethnl_module_eeprom_get_policy, .maxattr = ARRAY_SIZE(ethnl_module_eeprom_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_STATS_GET, .doit = ethnl_default_doit, .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, .policy = ethnl_stats_get_policy, .maxattr = ARRAY_SIZE(ethnl_stats_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_PHC_VCLOCKS_GET, .doit = ethnl_default_doit, .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, .policy = ethnl_phc_vclocks_get_policy, .maxattr = ARRAY_SIZE(ethnl_phc_vclocks_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_MODULE_GET, .doit = ethnl_default_doit, .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, .policy = ethnl_module_get_policy, .maxattr = ARRAY_SIZE(ethnl_module_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_MODULE_SET, .flags = GENL_UNS_ADMIN_PERM, .doit = ethnl_default_set_doit, .policy = ethnl_module_set_policy, .maxattr = ARRAY_SIZE(ethnl_module_set_policy) - 1, }, { .cmd = ETHTOOL_MSG_PSE_GET, .doit = ethnl_default_doit, .start = ethnl_perphy_start, .dumpit = ethnl_perphy_dumpit, .done = ethnl_perphy_done, .policy = ethnl_pse_get_policy, .maxattr = ARRAY_SIZE(ethnl_pse_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_PSE_SET, .flags = GENL_UNS_ADMIN_PERM, .doit = ethnl_default_set_doit, .policy = ethnl_pse_set_policy, .maxattr = ARRAY_SIZE(ethnl_pse_set_policy) - 1, }, { .cmd = ETHTOOL_MSG_RSS_GET, .doit = ethnl_default_doit, .start = ethnl_rss_dump_start, .dumpit = ethnl_rss_dumpit, .policy = ethnl_rss_get_policy, .maxattr = ARRAY_SIZE(ethnl_rss_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_PLCA_GET_CFG, .doit = ethnl_default_doit, .start = ethnl_perphy_start, .dumpit = ethnl_perphy_dumpit, .done = ethnl_perphy_done, .policy = ethnl_plca_get_cfg_policy, .maxattr = ARRAY_SIZE(ethnl_plca_get_cfg_policy) - 1, }, { .cmd = ETHTOOL_MSG_PLCA_SET_CFG, .flags = GENL_UNS_ADMIN_PERM, .doit = ethnl_default_set_doit, .policy = ethnl_plca_set_cfg_policy, .maxattr = ARRAY_SIZE(ethnl_plca_set_cfg_policy) - 1, }, { .cmd = ETHTOOL_MSG_PLCA_GET_STATUS, .doit = ethnl_default_doit, .start = ethnl_perphy_start, .dumpit = ethnl_perphy_dumpit, .done = ethnl_perphy_done, .policy = ethnl_plca_get_status_policy, .maxattr = ARRAY_SIZE(ethnl_plca_get_status_policy) - 1, }, { .cmd = ETHTOOL_MSG_MM_GET, .doit = ethnl_default_doit, .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, .policy = ethnl_mm_get_policy, .maxattr = ARRAY_SIZE(ethnl_mm_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_MM_SET, .flags = GENL_UNS_ADMIN_PERM, .doit = ethnl_default_set_doit, .policy = ethnl_mm_set_policy, .maxattr = ARRAY_SIZE(ethnl_mm_set_policy) - 1, }, { .cmd = ETHTOOL_MSG_MODULE_FW_FLASH_ACT, .flags = GENL_UNS_ADMIN_PERM, .doit = ethnl_act_module_fw_flash, .policy = ethnl_module_fw_flash_act_policy, .maxattr = ARRAY_SIZE(ethnl_module_fw_flash_act_policy) - 1, }, { .cmd = ETHTOOL_MSG_PHY_GET, .doit = ethnl_default_doit, .start = ethnl_perphy_start, .dumpit = ethnl_perphy_dumpit, .done = ethnl_perphy_done, .policy = ethnl_phy_get_policy, .maxattr = ARRAY_SIZE(ethnl_phy_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_TSCONFIG_GET, .doit = ethnl_default_doit, .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, .policy = ethnl_tsconfig_get_policy, .maxattr = ARRAY_SIZE(ethnl_tsconfig_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_TSCONFIG_SET, .flags = GENL_UNS_ADMIN_PERM, .doit = ethnl_default_set_doit, .policy = ethnl_tsconfig_set_policy, .maxattr = ARRAY_SIZE(ethnl_tsconfig_set_policy) - 1, }, { .cmd = ETHTOOL_MSG_RSS_SET, .flags = GENL_UNS_ADMIN_PERM, .doit = ethnl_default_set_doit, .policy = ethnl_rss_set_policy, .maxattr = ARRAY_SIZE(ethnl_rss_set_policy) - 1, }, { .cmd = ETHTOOL_MSG_RSS_CREATE_ACT, .flags = GENL_UNS_ADMIN_PERM, .doit = ethnl_rss_create_doit, .policy = ethnl_rss_create_policy, .maxattr = ARRAY_SIZE(ethnl_rss_create_policy) - 1, }, { .cmd = ETHTOOL_MSG_RSS_DELETE_ACT, .flags = GENL_UNS_ADMIN_PERM, .doit = ethnl_rss_delete_doit, .policy = ethnl_rss_delete_policy, .maxattr = ARRAY_SIZE(ethnl_rss_delete_policy) - 1, }, { .cmd = ETHTOOL_MSG_MSE_GET, .doit = ethnl_default_doit, .start = ethnl_perphy_start, .dumpit = ethnl_perphy_dumpit, .done = ethnl_perphy_done, .policy = ethnl_mse_get_policy, .maxattr = ARRAY_SIZE(ethnl_mse_get_policy) - 1, },};
static const struct genl_multicast_group ethtool_nl_mcgrps[] = { [ETHNL_MCGRP_MONITOR] = { .name = ETHTOOL_MCGRP_MONITOR_NAME },};
static struct genl_family ethtool_genl_family __ro_after_init = { .name = ETHTOOL_GENL_NAME, .version = ETHTOOL_GENL_VERSION, .netnsok = true, .parallel_ops = true, .ops = ethtool_genl_ops, .n_ops = ARRAY_SIZE(ethtool_genl_ops), .resv_start_op = ETHTOOL_MSG_MODULE_GET + 1, .mcgrps = ethtool_nl_mcgrps, .n_mcgrps = ARRAY_SIZE(ethtool_nl_mcgrps), .sock_priv_size = sizeof(struct ethnl_sock_priv), .sock_priv_destroy = ethnl_sock_priv_destroy,};
/* module setup */
static int __init ethnl_init(void){ int ret;
ret = genl_register_family(ðtool_genl_family); if (WARN(ret < 0, "ethtool: genetlink family registration failed")) return ret; ethnl_ok = true;
ret = register_netdevice_notifier(ðnl_netdev_notifier); WARN(ret < 0, "ethtool: net device notifier registration failed"); return ret;}
subsys_initcall(ethnl_init);