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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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#include <linux/ethtool_netlink.h>#include <linux/ethtool.h>#include <linux/export.h>#include <linux/phy.h>
#include "common.h"#include "linux/pse-pd/pse.h"#include "netlink.h"
struct pse_req_info { struct ethnl_req_info base;};
struct pse_reply_data { struct ethnl_reply_data base; struct ethtool_pse_control_status status;};
#define PSE_REPDATA(__reply_base) \ container_of(__reply_base, struct pse_reply_data, base)
/* PSE_GET */
const struct nla_policy ethnl_pse_get_policy[ETHTOOL_A_PSE_HEADER + 1] = { [ETHTOOL_A_PSE_HEADER] = NLA_POLICY_NESTED(ethnl_header_policy_phy),};
static int pse_get_pse_attributes(struct phy_device *phydev, struct netlink_ext_ack *extack, struct pse_reply_data *data){ if (!phydev) { NL_SET_ERR_MSG(extack, "No PHY found"); return -EOPNOTSUPP; }
if (!phydev->psec) { NL_SET_ERR_MSG(extack, "No PSE is attached"); return -EOPNOTSUPP; }
memset(&data->status, 0, sizeof(data->status));
return pse_ethtool_get_status(phydev->psec, extack, &data->status);}
static int pse_prepare_data(const struct ethnl_req_info *req_base, struct ethnl_reply_data *reply_base, const struct genl_info *info){ struct pse_reply_data *data = PSE_REPDATA(reply_base); struct net_device *dev = reply_base->dev; struct nlattr **tb = info->attrs; struct phy_device *phydev; int ret;
phydev = ethnl_req_get_phydev(req_base, tb, ETHTOOL_A_PSE_HEADER, info->extack); if (IS_ERR(phydev)) return PTR_ERR(phydev);
ret = ethnl_ops_begin(dev); if (ret < 0) return ret;
ret = pse_get_pse_attributes(phydev, info->extack, data);
ethnl_ops_complete(dev);
return ret;}
static int pse_reply_size(const struct ethnl_req_info *req_base, const struct ethnl_reply_data *reply_base){ const struct pse_reply_data *data = PSE_REPDATA(reply_base); const struct ethtool_pse_control_status *st = &data->status; int len = 0;
if (st->pw_d_id) len += nla_total_size(sizeof(u32)); /* _PSE_PW_D_ID */ if (st->podl_admin_state > 0) len += nla_total_size(sizeof(u32)); /* _PODL_PSE_ADMIN_STATE */ if (st->podl_pw_status > 0) len += nla_total_size(sizeof(u32)); /* _PODL_PSE_PW_D_STATUS */ if (st->c33_admin_state > 0) len += nla_total_size(sizeof(u32)); /* _C33_PSE_ADMIN_STATE */ if (st->c33_pw_status > 0) len += nla_total_size(sizeof(u32)); /* _C33_PSE_PW_D_STATUS */ if (st->c33_pw_class > 0) len += nla_total_size(sizeof(u32)); /* _C33_PSE_PW_CLASS */ if (st->c33_actual_pw > 0) len += nla_total_size(sizeof(u32)); /* _C33_PSE_ACTUAL_PW */ if (st->c33_ext_state_info.c33_pse_ext_state > 0) { len += nla_total_size(sizeof(u32)); /* _C33_PSE_EXT_STATE */ if (st->c33_ext_state_info.__c33_pse_ext_substate > 0) /* _C33_PSE_EXT_SUBSTATE */ len += nla_total_size(sizeof(u32)); } if (st->c33_avail_pw_limit > 0) /* _C33_AVAIL_PSE_PW_LIMIT */ len += nla_total_size(sizeof(u32)); if (st->c33_pw_limit_nb_ranges > 0) /* _C33_PSE_PW_LIMIT_RANGES */ len += st->c33_pw_limit_nb_ranges * (nla_total_size(0) + nla_total_size(sizeof(u32)) * 2); if (st->prio_max) /* _PSE_PRIO_MAX + _PSE_PRIO */ len += nla_total_size(sizeof(u32)) * 2;
return len;}
static int pse_put_pw_limit_ranges(struct sk_buff *skb, const struct ethtool_pse_control_status *st){ const struct ethtool_c33_pse_pw_limit_range *pw_limit_ranges; int i;
pw_limit_ranges = st->c33_pw_limit_ranges; for (i = 0; i < st->c33_pw_limit_nb_ranges; i++) { struct nlattr *nest;
nest = nla_nest_start(skb, ETHTOOL_A_C33_PSE_PW_LIMIT_RANGES); if (!nest) return -EMSGSIZE;
if (nla_put_u32(skb, ETHTOOL_A_C33_PSE_PW_LIMIT_MIN, pw_limit_ranges->min) || nla_put_u32(skb, ETHTOOL_A_C33_PSE_PW_LIMIT_MAX, pw_limit_ranges->max)) { nla_nest_cancel(skb, nest); return -EMSGSIZE; } nla_nest_end(skb, nest); pw_limit_ranges++; }
return 0;}
static int pse_fill_reply(struct sk_buff *skb, const struct ethnl_req_info *req_base, const struct ethnl_reply_data *reply_base){ const struct pse_reply_data *data = PSE_REPDATA(reply_base); const struct ethtool_pse_control_status *st = &data->status;
if (st->pw_d_id && nla_put_u32(skb, ETHTOOL_A_PSE_PW_D_ID, st->pw_d_id)) return -EMSGSIZE;
if (st->podl_admin_state > 0 && nla_put_u32(skb, ETHTOOL_A_PODL_PSE_ADMIN_STATE, st->podl_admin_state)) return -EMSGSIZE;
if (st->podl_pw_status > 0 && nla_put_u32(skb, ETHTOOL_A_PODL_PSE_PW_D_STATUS, st->podl_pw_status)) return -EMSGSIZE;
if (st->c33_admin_state > 0 && nla_put_u32(skb, ETHTOOL_A_C33_PSE_ADMIN_STATE, st->c33_admin_state)) return -EMSGSIZE;
if (st->c33_pw_status > 0 && nla_put_u32(skb, ETHTOOL_A_C33_PSE_PW_D_STATUS, st->c33_pw_status)) return -EMSGSIZE;
if (st->c33_pw_class > 0 && nla_put_u32(skb, ETHTOOL_A_C33_PSE_PW_CLASS, st->c33_pw_class)) return -EMSGSIZE;
if (st->c33_actual_pw > 0 && nla_put_u32(skb, ETHTOOL_A_C33_PSE_ACTUAL_PW, st->c33_actual_pw)) return -EMSGSIZE;
if (st->c33_ext_state_info.c33_pse_ext_state > 0) { if (nla_put_u32(skb, ETHTOOL_A_C33_PSE_EXT_STATE, st->c33_ext_state_info.c33_pse_ext_state)) return -EMSGSIZE;
if (st->c33_ext_state_info.__c33_pse_ext_substate > 0 && nla_put_u32(skb, ETHTOOL_A_C33_PSE_EXT_SUBSTATE, st->c33_ext_state_info.__c33_pse_ext_substate)) return -EMSGSIZE; }
if (st->c33_avail_pw_limit > 0 && nla_put_u32(skb, ETHTOOL_A_C33_PSE_AVAIL_PW_LIMIT, st->c33_avail_pw_limit)) return -EMSGSIZE;
if (st->c33_pw_limit_nb_ranges > 0 && pse_put_pw_limit_ranges(skb, st)) return -EMSGSIZE;
if (st->prio_max && (nla_put_u32(skb, ETHTOOL_A_PSE_PRIO_MAX, st->prio_max) || nla_put_u32(skb, ETHTOOL_A_PSE_PRIO, st->prio))) return -EMSGSIZE;
return 0;}
static void pse_cleanup_data(struct ethnl_reply_data *reply_base){ const struct pse_reply_data *data = PSE_REPDATA(reply_base);
kfree(data->status.c33_pw_limit_ranges);}
/* PSE_SET */
const struct nla_policy ethnl_pse_set_policy[ETHTOOL_A_PSE_MAX + 1] = { [ETHTOOL_A_PSE_HEADER] = NLA_POLICY_NESTED(ethnl_header_policy_phy), [ETHTOOL_A_PODL_PSE_ADMIN_CONTROL] = NLA_POLICY_RANGE(NLA_U32, ETHTOOL_PODL_PSE_ADMIN_STATE_DISABLED, ETHTOOL_PODL_PSE_ADMIN_STATE_ENABLED), [ETHTOOL_A_C33_PSE_ADMIN_CONTROL] = NLA_POLICY_RANGE(NLA_U32, ETHTOOL_C33_PSE_ADMIN_STATE_DISABLED, ETHTOOL_C33_PSE_ADMIN_STATE_ENABLED), [ETHTOOL_A_C33_PSE_AVAIL_PW_LIMIT] = { .type = NLA_U32 }, [ETHTOOL_A_PSE_PRIO] = { .type = NLA_U32 },};
static intethnl_set_pse_validate(struct phy_device *phydev, struct genl_info *info){ struct nlattr **tb = info->attrs;
if (IS_ERR_OR_NULL(phydev)) { NL_SET_ERR_MSG(info->extack, "No PHY is attached"); return -EOPNOTSUPP; }
if (!phydev->psec) { NL_SET_ERR_MSG(info->extack, "No PSE is attached"); return -EOPNOTSUPP; }
if (tb[ETHTOOL_A_PODL_PSE_ADMIN_CONTROL] && !pse_has_podl(phydev->psec)) { NL_SET_ERR_MSG_ATTR(info->extack, tb[ETHTOOL_A_PODL_PSE_ADMIN_CONTROL], "setting PoDL PSE admin control not supported"); return -EOPNOTSUPP; } if (tb[ETHTOOL_A_C33_PSE_ADMIN_CONTROL] && !pse_has_c33(phydev->psec)) { NL_SET_ERR_MSG_ATTR(info->extack, tb[ETHTOOL_A_C33_PSE_ADMIN_CONTROL], "setting C33 PSE admin control not supported"); return -EOPNOTSUPP; }
return 0;}
static intethnl_set_pse(struct ethnl_req_info *req_info, struct genl_info *info){ struct nlattr **tb = info->attrs; struct phy_device *phydev; int ret;
phydev = ethnl_req_get_phydev(req_info, tb, ETHTOOL_A_PSE_HEADER, info->extack); ret = ethnl_set_pse_validate(phydev, info); if (ret) return ret;
if (tb[ETHTOOL_A_PSE_PRIO]) { unsigned int prio;
prio = nla_get_u32(tb[ETHTOOL_A_PSE_PRIO]); ret = pse_ethtool_set_prio(phydev->psec, info->extack, prio); if (ret) return ret; }
if (tb[ETHTOOL_A_C33_PSE_AVAIL_PW_LIMIT]) { unsigned int pw_limit;
pw_limit = nla_get_u32(tb[ETHTOOL_A_C33_PSE_AVAIL_PW_LIMIT]); ret = pse_ethtool_set_pw_limit(phydev->psec, info->extack, pw_limit); if (ret) return ret; }
/* These values are already validated by the ethnl_pse_set_policy */ if (tb[ETHTOOL_A_PODL_PSE_ADMIN_CONTROL] || tb[ETHTOOL_A_C33_PSE_ADMIN_CONTROL]) { struct pse_control_config config = {};
if (tb[ETHTOOL_A_PODL_PSE_ADMIN_CONTROL]) config.podl_admin_control = nla_get_u32(tb[ETHTOOL_A_PODL_PSE_ADMIN_CONTROL]); if (tb[ETHTOOL_A_C33_PSE_ADMIN_CONTROL]) config.c33_admin_control = nla_get_u32(tb[ETHTOOL_A_C33_PSE_ADMIN_CONTROL]);
/* pse_ethtool_set_config() will do nothing if the config * is zero */ ret = pse_ethtool_set_config(phydev->psec, info->extack, &config); if (ret) return ret; }
/* Return errno or zero - PSE has no notification */ return ret;}
const struct ethnl_request_ops ethnl_pse_request_ops = { .request_cmd = ETHTOOL_MSG_PSE_GET, .reply_cmd = ETHTOOL_MSG_PSE_GET_REPLY, .hdr_attr = ETHTOOL_A_PSE_HEADER, .req_info_size = sizeof(struct pse_req_info), .reply_data_size = sizeof(struct pse_reply_data),
.prepare_data = pse_prepare_data, .reply_size = pse_reply_size, .fill_reply = pse_fill_reply, .cleanup_data = pse_cleanup_data,
.set = ethnl_set_pse, /* PSE has no notification */};
void ethnl_pse_send_ntf(struct net_device *netdev, unsigned long notifs){ void *reply_payload; struct sk_buff *skb; int reply_len; int ret;
ASSERT_RTNL();
if (!netdev || !notifs) return;
reply_len = ethnl_reply_header_size() + nla_total_size(sizeof(u32)); /* _PSE_NTF_EVENTS */
skb = genlmsg_new(reply_len, GFP_KERNEL); if (!skb) return;
reply_payload = ethnl_bcastmsg_put(skb, ETHTOOL_MSG_PSE_NTF); if (!reply_payload) goto err_skb;
ret = ethnl_fill_reply_header(skb, netdev, ETHTOOL_A_PSE_NTF_HEADER); if (ret < 0) goto err_skb;
if (nla_put_uint(skb, ETHTOOL_A_PSE_NTF_EVENTS, notifs)) goto err_skb;
genlmsg_end(skb, reply_payload); ethnl_multicast(skb, netdev); return;
err_skb: nlmsg_free(skb);}EXPORT_SYMBOL_GPL(ethnl_pse_send_ntf);