diff options
Diffstat (limited to 'net/ethtool/phy.c')
| -rw-r--r-- | net/ethtool/phy.c | 306 |
1 files changed, 0 insertions, 306 deletions
diff --git a/net/ethtool/phy.c b/net/ethtool/phy.c deleted file mode 100644 index 5add2840aaeb..000000000000 --- a/net/ethtool/phy.c +++ /dev/null @@ -1,306 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright 2023 Bootlin - * - */ -#include "common.h" -#include "netlink.h" - -#include <linux/phy.h> -#include <linux/phy_link_topology.h> -#include <linux/sfp.h> - -struct phy_req_info { - struct ethnl_req_info base; - struct phy_device_node pdn; -}; - -#define PHY_REQINFO(__req_base) \ - container_of(__req_base, struct phy_req_info, base) - -const struct nla_policy ethnl_phy_get_policy[ETHTOOL_A_PHY_HEADER + 1] = { - [ETHTOOL_A_PHY_HEADER] = NLA_POLICY_NESTED(ethnl_header_policy), -}; - -/* Caller holds rtnl */ -static ssize_t -ethnl_phy_reply_size(const struct ethnl_req_info *req_base, - struct netlink_ext_ack *extack) -{ - struct phy_link_topology *topo; - struct phy_device_node *pdn; - struct phy_device *phydev; - unsigned long index; - size_t size; - - ASSERT_RTNL(); - - topo = &req_base->dev->link_topo; - - size = nla_total_size(0); - - xa_for_each(&topo->phys, index, pdn) { - phydev = pdn->phy; - - /* ETHTOOL_A_PHY_INDEX */ - size += nla_total_size(sizeof(u32)); - - /* ETHTOOL_A_DRVNAME */ - size += nla_total_size(strlen(phydev->drv->name) + 1); - - /* ETHTOOL_A_NAME */ - size += nla_total_size(strlen(dev_name(&phydev->mdio.dev)) + 1); - - /* ETHTOOL_A_PHY_UPSTREAM_TYPE */ - size += nla_total_size(sizeof(u8)); - - /* ETHTOOL_A_PHY_ID */ - size += nla_total_size(sizeof(u32)); - - if (phy_on_sfp(phydev)) { - const char *upstream_sfp_name = sfp_get_name(pdn->parent_sfp_bus); - - /* ETHTOOL_A_PHY_UPSTREAM_SFP_NAME */ - if (upstream_sfp_name) - size += nla_total_size(strlen(upstream_sfp_name) + 1); - - /* ETHTOOL_A_PHY_UPSTREAM_INDEX */ - size += nla_total_size(sizeof(u32)); - } - - /* ETHTOOL_A_PHY_DOWNSTREAM_SFP_NAME */ - if (phydev->sfp_bus) { - const char *sfp_name = sfp_get_name(phydev->sfp_bus); - - if (sfp_name) - size += nla_total_size(strlen(sfp_name) + 1); - } - } - - return size; -} - -static int -ethnl_phy_fill_reply(const struct ethnl_req_info *req_base, struct sk_buff *skb) -{ - struct phy_req_info *req_info = PHY_REQINFO(req_base); - struct phy_device_node *pdn = &req_info->pdn; - struct phy_device *phydev = pdn->phy; - enum phy_upstream ptype; - struct nlattr *nest; - - ptype = pdn->upstream_type; - - if (nla_put_u32(skb, ETHTOOL_A_PHY_INDEX, phydev->phyindex) || - nla_put_string(skb, ETHTOOL_A_PHY_DRVNAME, phydev->drv->name) || - nla_put_string(skb, ETHTOOL_A_PHY_NAME, dev_name(&phydev->mdio.dev)) || - nla_put_u8(skb, ETHTOOL_A_PHY_UPSTREAM_TYPE, ptype) || - nla_put_u32(skb, ETHTOOL_A_PHY_ID, phydev->phy_id)) - return -EMSGSIZE; - - if (ptype == PHY_UPSTREAM_PHY) { - struct phy_device *upstream = pdn->upstream.phydev; - const char *sfp_upstream_name; - - nest = nla_nest_start(skb, ETHTOOL_A_PHY_UPSTREAM); - if (!nest) - return -EMSGSIZE; - - /* Parent index */ - if (nla_put_u32(skb, ETHTOOL_A_PHY_UPSTREAM_INDEX, upstream->phyindex)) - return -EMSGSIZE; - - if (pdn->parent_sfp_bus) { - sfp_upstream_name = sfp_get_name(pdn->parent_sfp_bus); - if (sfp_upstream_name && nla_put_string(skb, - ETHTOOL_A_PHY_UPSTREAM_SFP_NAME, - sfp_upstream_name)) - return -EMSGSIZE; - } - - nla_nest_end(skb, nest); - } - - if (phydev->sfp_bus) { - const char *sfp_name = sfp_get_name(phydev->sfp_bus); - - if (sfp_name && - nla_put_string(skb, ETHTOOL_A_PHY_DOWNSTREAM_SFP_NAME, - sfp_name)) - return -EMSGSIZE; - } - - return 0; -} - -static int ethnl_phy_parse_request(struct ethnl_req_info *req_base, - struct nlattr **tb) -{ - struct phy_link_topology *topo = &req_base->dev->link_topo; - struct phy_req_info *req_info = PHY_REQINFO(req_base); - struct phy_device_node *pdn; - - if (!req_base->phydev) - return 0; - - pdn = xa_load(&topo->phys, req_base->phydev->phyindex); - memcpy(&req_info->pdn, pdn, sizeof(*pdn)); - - return 0; -} - -int ethnl_phy_doit(struct sk_buff *skb, struct genl_info *info) -{ - struct phy_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.base, - tb[ETHTOOL_A_PHY_HEADER], - genl_info_net(info), info->extack, - true); - if (ret < 0) - return ret; - - rtnl_lock(); - - ret = ethnl_phy_parse_request(&req_info.base, tb); - if (ret < 0) - goto err_unlock_rtnl; - - /* No PHY, return early */ - if (!req_info.pdn.phy) - goto err_unlock_rtnl; - - ret = ethnl_phy_reply_size(&req_info.base, info->extack); - if (ret < 0) - goto err_unlock_rtnl; - reply_len = ret + ethnl_reply_header_size(); - - rskb = ethnl_reply_init(reply_len, req_info.base.dev, - ETHTOOL_MSG_PHY_GET_REPLY, - ETHTOOL_A_PHY_HEADER, - info, &reply_payload); - if (!rskb) { - ret = -ENOMEM; - goto err_unlock_rtnl; - } - - ret = ethnl_phy_fill_reply(&req_info.base, rskb); - if (ret) - goto err_free_msg; - - rtnl_unlock(); - ethnl_parse_header_dev_put(&req_info.base); - 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.base); - return ret; -} - -struct ethnl_phy_dump_ctx { - struct phy_req_info *phy_req_info; -}; - -int ethnl_phy_start(struct netlink_callback *cb) -{ - const struct genl_dumpit_info *info = genl_dumpit_info(cb); - struct ethnl_phy_dump_ctx *ctx = (void *)cb->ctx; - struct nlattr **tb = info->info.attrs; - int ret; - - BUILD_BUG_ON(sizeof(*ctx) > sizeof(cb->ctx)); - - ctx->phy_req_info = kzalloc(sizeof(*ctx->phy_req_info), GFP_KERNEL); - if (!ctx->phy_req_info) - return -ENOMEM; - - ret = ethnl_parse_header_dev_get(&ctx->phy_req_info->base, - tb[ETHTOOL_A_PHY_HEADER], - sock_net(cb->skb->sk), cb->extack, - false); - return ret; -} - -int ethnl_phy_done(struct netlink_callback *cb) -{ - struct ethnl_phy_dump_ctx *ctx = (void *)cb->ctx; - - kfree(ctx->phy_req_info); - - return 0; -} - -static int ethnl_phy_dump_one_dev(struct sk_buff *skb, struct net_device *dev, - struct netlink_callback *cb) -{ - struct ethnl_phy_dump_ctx *ctx = (void *)cb->ctx; - struct phy_req_info *pri = ctx->phy_req_info; - struct phy_device_node *pdn; - unsigned long index = 1; - int ret = 0; - void *ehdr; - - pri->base.dev = dev; - - xa_for_each(&dev->link_topo.phys, index, pdn) { - ehdr = ethnl_dump_put(skb, cb, - ETHTOOL_MSG_PHY_GET_REPLY); - if (!ehdr) { - ret = -EMSGSIZE; - break; - } - - ret = ethnl_fill_reply_header(skb, dev, - ETHTOOL_A_PHY_HEADER); - if (ret < 0) { - genlmsg_cancel(skb, ehdr); - break; - } - - memcpy(&pri->pdn, pdn, sizeof(*pdn)); - ret = ethnl_phy_fill_reply(&pri->base, skb); - - genlmsg_end(skb, ehdr); - } - - return ret; -} - -int ethnl_phy_dumpit(struct sk_buff *skb, struct netlink_callback *cb) -{ - struct ethnl_phy_dump_ctx *ctx = (void *)cb->ctx; - struct net *net = sock_net(skb->sk); - unsigned long ifindex = 1; - struct net_device *dev; - int ret = 0; - - rtnl_lock(); - - if (ctx->phy_req_info->base.dev) { - ret = ethnl_phy_dump_one_dev(skb, ctx->phy_req_info->base.dev, cb); - ethnl_parse_header_dev_put(&ctx->phy_req_info->base); - ctx->phy_req_info->base.dev = NULL; - } else { - for_each_netdev_dump(net, dev, ifindex) { - ret = ethnl_phy_dump_one_dev(skb, dev, cb); - if (ret) - break; - } - } - rtnl_unlock(); - - if (ret == -EMSGSIZE && skb->len) - return skb->len; - return ret; -} - |