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-rw-r--r--net/ethtool/Makefile2
-rw-r--r--net/ethtool/fec.c238
-rw-r--r--net/ethtool/ioctl.c21
-rw-r--r--net/ethtool/netlink.c19
-rw-r--r--net/ethtool/netlink.h4
5 files changed, 283 insertions, 1 deletions
diff --git a/net/ethtool/Makefile b/net/ethtool/Makefile
index 7a849ff22dad..c2dc9033a8f7 100644
--- a/net/ethtool/Makefile
+++ b/net/ethtool/Makefile
@@ -7,4 +7,4 @@ obj-$(CONFIG_ETHTOOL_NETLINK) += ethtool_nl.o
ethtool_nl-y := netlink.o bitset.o strset.o linkinfo.o linkmodes.o \
linkstate.o debug.o wol.o features.o privflags.o rings.o \
channels.o coalesce.o pause.o eee.o tsinfo.o cabletest.o \
- tunnels.o
+ tunnels.o fec.o
diff --git a/net/ethtool/fec.c b/net/ethtool/fec.c
new file mode 100644
index 000000000000..31454b9188bd
--- /dev/null
+++ b/net/ethtool/fec.c
@@ -0,0 +1,238 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include "netlink.h"
+#include "common.h"
+#include "bitset.h"
+
+struct fec_req_info {
+ struct ethnl_req_info base;
+};
+
+struct fec_reply_data {
+ struct ethnl_reply_data base;
+ __ETHTOOL_DECLARE_LINK_MODE_MASK(fec_link_modes);
+ u32 active_fec;
+ u8 fec_auto;
+};
+
+#define FEC_REPDATA(__reply_base) \
+ container_of(__reply_base, struct fec_reply_data, base)
+
+#define ETHTOOL_FEC_MASK ((ETHTOOL_FEC_LLRS << 1) - 1)
+
+const struct nla_policy ethnl_fec_get_policy[ETHTOOL_A_FEC_HEADER + 1] = {
+ [ETHTOOL_A_FEC_HEADER] = NLA_POLICY_NESTED(ethnl_header_policy),
+};
+
+static void
+ethtool_fec_to_link_modes(u32 fec, unsigned long *link_modes, u8 *fec_auto)
+{
+ if (fec_auto)
+ *fec_auto = !!(fec & ETHTOOL_FEC_AUTO);
+
+ if (fec & ETHTOOL_FEC_OFF)
+ __set_bit(ETHTOOL_LINK_MODE_FEC_NONE_BIT, link_modes);
+ if (fec & ETHTOOL_FEC_RS)
+ __set_bit(ETHTOOL_LINK_MODE_FEC_RS_BIT, link_modes);
+ if (fec & ETHTOOL_FEC_BASER)
+ __set_bit(ETHTOOL_LINK_MODE_FEC_BASER_BIT, link_modes);
+ if (fec & ETHTOOL_FEC_LLRS)
+ __set_bit(ETHTOOL_LINK_MODE_FEC_LLRS_BIT, link_modes);
+}
+
+static int
+ethtool_link_modes_to_fecparam(struct ethtool_fecparam *fec,
+ unsigned long *link_modes, u8 fec_auto)
+{
+ memset(fec, 0, sizeof(*fec));
+
+ if (fec_auto)
+ fec->fec |= ETHTOOL_FEC_AUTO;
+
+ if (__test_and_clear_bit(ETHTOOL_LINK_MODE_FEC_NONE_BIT, link_modes))
+ fec->fec |= ETHTOOL_FEC_OFF;
+ if (__test_and_clear_bit(ETHTOOL_LINK_MODE_FEC_RS_BIT, link_modes))
+ fec->fec |= ETHTOOL_FEC_RS;
+ if (__test_and_clear_bit(ETHTOOL_LINK_MODE_FEC_BASER_BIT, link_modes))
+ fec->fec |= ETHTOOL_FEC_BASER;
+ if (__test_and_clear_bit(ETHTOOL_LINK_MODE_FEC_LLRS_BIT, link_modes))
+ fec->fec |= ETHTOOL_FEC_LLRS;
+
+ if (!bitmap_empty(link_modes, __ETHTOOL_LINK_MODE_MASK_NBITS))
+ return -EINVAL;
+
+ return 0;
+}
+
+static int fec_prepare_data(const struct ethnl_req_info *req_base,
+ struct ethnl_reply_data *reply_base,
+ struct genl_info *info)
+{
+ __ETHTOOL_DECLARE_LINK_MODE_MASK(active_fec_modes) = {};
+ struct fec_reply_data *data = FEC_REPDATA(reply_base);
+ struct net_device *dev = reply_base->dev;
+ struct ethtool_fecparam fec = {};
+ int ret;
+
+ if (!dev->ethtool_ops->get_fecparam)
+ return -EOPNOTSUPP;
+ ret = ethnl_ops_begin(dev);
+ if (ret < 0)
+ return ret;
+ ret = dev->ethtool_ops->get_fecparam(dev, &fec);
+ ethnl_ops_complete(dev);
+ if (ret)
+ return ret;
+
+ WARN_ON_ONCE(fec.reserved);
+
+ ethtool_fec_to_link_modes(fec.fec, data->fec_link_modes,
+ &data->fec_auto);
+
+ ethtool_fec_to_link_modes(fec.active_fec, active_fec_modes, NULL);
+ data->active_fec = find_first_bit(active_fec_modes,
+ __ETHTOOL_LINK_MODE_MASK_NBITS);
+ /* Don't report attr if no FEC mode set. Note that
+ * ethtool_fecparam_to_link_modes() ignores NONE and AUTO.
+ */
+ if (data->active_fec == __ETHTOOL_LINK_MODE_MASK_NBITS)
+ data->active_fec = 0;
+
+ return 0;
+}
+
+static int fec_reply_size(const struct ethnl_req_info *req_base,
+ const struct ethnl_reply_data *reply_base)
+{
+ bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
+ const struct fec_reply_data *data = FEC_REPDATA(reply_base);
+ int len = 0;
+ int ret;
+
+ ret = ethnl_bitset_size(data->fec_link_modes, NULL,
+ __ETHTOOL_LINK_MODE_MASK_NBITS,
+ link_mode_names, compact);
+ if (ret < 0)
+ return ret;
+ len += ret;
+
+ len += nla_total_size(sizeof(u8)) + /* _FEC_AUTO */
+ nla_total_size(sizeof(u32)); /* _FEC_ACTIVE */
+
+ return len;
+}
+
+static int fec_fill_reply(struct sk_buff *skb,
+ const struct ethnl_req_info *req_base,
+ const struct ethnl_reply_data *reply_base)
+{
+ bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
+ const struct fec_reply_data *data = FEC_REPDATA(reply_base);
+ int ret;
+
+ ret = ethnl_put_bitset(skb, ETHTOOL_A_FEC_MODES,
+ data->fec_link_modes, NULL,
+ __ETHTOOL_LINK_MODE_MASK_NBITS,
+ link_mode_names, compact);
+ if (ret < 0)
+ return ret;
+
+ if (nla_put_u8(skb, ETHTOOL_A_FEC_AUTO, data->fec_auto) ||
+ (data->active_fec &&
+ nla_put_u32(skb, ETHTOOL_A_FEC_ACTIVE, data->active_fec)))
+ return -EMSGSIZE;
+
+ return 0;
+}
+
+const struct ethnl_request_ops ethnl_fec_request_ops = {
+ .request_cmd = ETHTOOL_MSG_FEC_GET,
+ .reply_cmd = ETHTOOL_MSG_FEC_GET_REPLY,
+ .hdr_attr = ETHTOOL_A_FEC_HEADER,
+ .req_info_size = sizeof(struct fec_req_info),
+ .reply_data_size = sizeof(struct fec_reply_data),
+
+ .prepare_data = fec_prepare_data,
+ .reply_size = fec_reply_size,
+ .fill_reply = fec_fill_reply,
+};
+
+/* FEC_SET */
+
+const struct nla_policy ethnl_fec_set_policy[ETHTOOL_A_FEC_AUTO + 1] = {
+ [ETHTOOL_A_FEC_HEADER] = NLA_POLICY_NESTED(ethnl_header_policy),
+ [ETHTOOL_A_FEC_MODES] = { .type = NLA_NESTED },
+ [ETHTOOL_A_FEC_AUTO] = NLA_POLICY_MAX(NLA_U8, 1),
+};
+
+int ethnl_set_fec(struct sk_buff *skb, struct genl_info *info)
+{
+ __ETHTOOL_DECLARE_LINK_MODE_MASK(fec_link_modes) = {};
+ struct ethnl_req_info req_info = {};
+ struct nlattr **tb = info->attrs;
+ struct ethtool_fecparam fec = {};
+ const struct ethtool_ops *ops;
+ struct net_device *dev;
+ bool mod = false;
+ u8 fec_auto;
+ int ret;
+
+ ret = ethnl_parse_header_dev_get(&req_info, tb[ETHTOOL_A_FEC_HEADER],
+ genl_info_net(info), info->extack,
+ true);
+ if (ret < 0)
+ return ret;
+ dev = req_info.dev;
+ ops = dev->ethtool_ops;
+ ret = -EOPNOTSUPP;
+ if (!ops->get_fecparam || !ops->set_fecparam)
+ goto out_dev;
+
+ rtnl_lock();
+ ret = ethnl_ops_begin(dev);
+ if (ret < 0)
+ goto out_rtnl;
+ ret = ops->get_fecparam(dev, &fec);
+ if (ret < 0)
+ goto out_ops;
+
+ ethtool_fec_to_link_modes(fec.fec, fec_link_modes, &fec_auto);
+
+ ret = ethnl_update_bitset(fec_link_modes,
+ __ETHTOOL_LINK_MODE_MASK_NBITS,
+ tb[ETHTOOL_A_FEC_MODES],
+ link_mode_names, info->extack, &mod);
+ if (ret < 0)
+ goto out_ops;
+ ethnl_update_u8(&fec_auto, tb[ETHTOOL_A_FEC_AUTO], &mod);
+
+ ret = 0;
+ if (!mod)
+ goto out_ops;
+
+ ret = ethtool_link_modes_to_fecparam(&fec, fec_link_modes, fec_auto);
+ if (ret) {
+ NL_SET_ERR_MSG_ATTR(info->extack, tb[ETHTOOL_A_FEC_MODES],
+ "invalid FEC modes requested");
+ goto out_ops;
+ }
+ if (!fec.fec) {
+ ret = -EINVAL;
+ NL_SET_ERR_MSG_ATTR(info->extack, tb[ETHTOOL_A_FEC_MODES],
+ "no FEC modes set");
+ goto out_ops;
+ }
+
+ ret = dev->ethtool_ops->set_fecparam(dev, &fec);
+ if (ret < 0)
+ goto out_ops;
+ ethtool_notify(dev, ETHTOOL_MSG_FEC_NTF, NULL);
+
+out_ops:
+ ethnl_ops_complete(dev);
+out_rtnl:
+ rtnl_unlock();
+out_dev:
+ dev_put(dev);
+ return ret;
+}
diff --git a/net/ethtool/ioctl.c b/net/ethtool/ioctl.c
index 771688e1b0da..a9f67574148f 100644
--- a/net/ethtool/ioctl.c
+++ b/net/ethtool/ioctl.c
@@ -1828,6 +1828,18 @@ out:
return ret;
}
+__printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...)
+{
+ va_list args;
+
+ va_start(args, fmt);
+ vsnprintf(*data, ETH_GSTRING_LEN, fmt, args);
+ va_end(args);
+
+ *data += ETH_GSTRING_LEN;
+}
+EXPORT_SYMBOL(ethtool_sprintf);
+
static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
{
struct ethtool_value id;
@@ -2540,6 +2552,9 @@ static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr)
if (rc)
return rc;
+ if (WARN_ON_ONCE(fecparam.reserved))
+ fecparam.reserved = 0;
+
if (copy_to_user(useraddr, &fecparam, sizeof(fecparam)))
return -EFAULT;
return 0;
@@ -2555,6 +2570,12 @@ static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr)
if (copy_from_user(&fecparam, useraddr, sizeof(fecparam)))
return -EFAULT;
+ if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE)
+ return -EINVAL;
+
+ fecparam.active_fec = 0;
+ fecparam.reserved = 0;
+
return dev->ethtool_ops->set_fecparam(dev, &fecparam);
}
diff --git a/net/ethtool/netlink.c b/net/ethtool/netlink.c
index 50d3c8896f91..705a4b201564 100644
--- a/net/ethtool/netlink.c
+++ b/net/ethtool/netlink.c
@@ -244,6 +244,7 @@ ethnl_default_requests[__ETHTOOL_MSG_USER_CNT] = {
[ETHTOOL_MSG_COALESCE_GET] = &ethnl_coalesce_request_ops,
[ETHTOOL_MSG_PAUSE_GET] = &ethnl_pause_request_ops,
[ETHTOOL_MSG_EEE_GET] = &ethnl_eee_request_ops,
+ [ETHTOOL_MSG_FEC_GET] = &ethnl_fec_request_ops,
[ETHTOOL_MSG_TSINFO_GET] = &ethnl_tsinfo_request_ops,
};
@@ -551,6 +552,7 @@ ethnl_default_notify_ops[ETHTOOL_MSG_KERNEL_MAX + 1] = {
[ETHTOOL_MSG_COALESCE_NTF] = &ethnl_coalesce_request_ops,
[ETHTOOL_MSG_PAUSE_NTF] = &ethnl_pause_request_ops,
[ETHTOOL_MSG_EEE_NTF] = &ethnl_eee_request_ops,
+ [ETHTOOL_MSG_FEC_NTF] = &ethnl_fec_request_ops,
};
/* default notification handler */
@@ -643,6 +645,7 @@ static const ethnl_notify_handler_t ethnl_notify_handlers[] = {
[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,
};
void ethtool_notify(struct net_device *dev, unsigned int cmd, const void *data)
@@ -912,6 +915,22 @@ static const struct genl_ops ethtool_genl_ops[] = {
.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_set_fec,
+ .policy = ethnl_fec_set_policy,
+ .maxattr = ARRAY_SIZE(ethnl_fec_set_policy) - 1,
+ },
};
static const struct genl_multicast_group ethtool_nl_mcgrps[] = {
diff --git a/net/ethtool/netlink.h b/net/ethtool/netlink.h
index 6eabd58d81bf..785f7ee45930 100644
--- a/net/ethtool/netlink.h
+++ b/net/ethtool/netlink.h
@@ -344,6 +344,7 @@ extern const struct ethnl_request_ops ethnl_coalesce_request_ops;
extern const struct ethnl_request_ops ethnl_pause_request_ops;
extern const struct ethnl_request_ops ethnl_eee_request_ops;
extern const struct ethnl_request_ops ethnl_tsinfo_request_ops;
+extern const struct ethnl_request_ops ethnl_fec_request_ops;
extern const struct nla_policy ethnl_header_policy[ETHTOOL_A_HEADER_FLAGS + 1];
extern const struct nla_policy ethnl_header_policy_stats[ETHTOOL_A_HEADER_FLAGS + 1];
@@ -375,6 +376,8 @@ extern const struct nla_policy ethnl_tsinfo_get_policy[ETHTOOL_A_TSINFO_HEADER +
extern const struct nla_policy ethnl_cable_test_act_policy[ETHTOOL_A_CABLE_TEST_HEADER + 1];
extern const struct nla_policy ethnl_cable_test_tdr_act_policy[ETHTOOL_A_CABLE_TEST_TDR_CFG + 1];
extern const struct nla_policy ethnl_tunnel_info_get_policy[ETHTOOL_A_TUNNEL_INFO_HEADER + 1];
+extern const struct nla_policy ethnl_fec_get_policy[ETHTOOL_A_FEC_HEADER + 1];
+extern const struct nla_policy ethnl_fec_set_policy[ETHTOOL_A_FEC_AUTO + 1];
int ethnl_set_linkinfo(struct sk_buff *skb, struct genl_info *info);
int ethnl_set_linkmodes(struct sk_buff *skb, struct genl_info *info);
@@ -392,5 +395,6 @@ int ethnl_act_cable_test_tdr(struct sk_buff *skb, struct genl_info *info);
int ethnl_tunnel_info_doit(struct sk_buff *skb, struct genl_info *info);
int ethnl_tunnel_info_start(struct netlink_callback *cb);
int ethnl_tunnel_info_dumpit(struct sk_buff *skb, struct netlink_callback *cb);
+int ethnl_set_fec(struct sk_buff *skb, struct genl_info *info);
#endif /* _NET_ETHTOOL_NETLINK_H */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 21:44:06 +0000