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-rw-r--r--include/linux/dcbnl.h33
-rw-r--r--include/net/dcbnl.h3
-rw-r--r--net/dcb/dcbnl.c133
3 files changed, 169 insertions, 0 deletions
diff --git a/include/linux/dcbnl.h b/include/linux/dcbnl.h
index 16eea36d893..68cd248f6d3 100644
--- a/include/linux/dcbnl.h
+++ b/include/linux/dcbnl.h
@@ -137,6 +137,8 @@ struct dcbmsg {
* @DCB_CMD_IEEE_GET: get IEEE 802.1Qaz configuration
* @DCB_CMD_GDCBX: get DCBX engine configuration
* @DCB_CMD_SDCBX: set DCBX engine configuration
+ * @DCB_CMD_GFEATCFG: get DCBX features flags
+ * @DCB_CMD_SFEATCFG: set DCBX features negotiation flags
*/
enum dcbnl_commands {
DCB_CMD_UNDEFINED,
@@ -176,6 +178,9 @@ enum dcbnl_commands {
DCB_CMD_GDCBX,
DCB_CMD_SDCBX,
+ DCB_CMD_GFEATCFG,
+ DCB_CMD_SFEATCFG,
+
__DCB_CMD_ENUM_MAX,
DCB_CMD_MAX = __DCB_CMD_ENUM_MAX - 1,
};
@@ -197,6 +202,7 @@ enum dcbnl_commands {
* @DCB_ATTR_BCN: backward congestion notification configuration (NLA_NESTED)
* @DCB_ATTR_IEEE: IEEE 802.1Qaz supported attributes (NLA_NESTED)
* @DCB_ATTR_DCBX: DCBX engine configuration in the device (NLA_U8)
+ * @DCB_ATTR_FEATCFG: DCBX features flags (NLA_NESTED)
*/
enum dcbnl_attrs {
DCB_ATTR_UNDEFINED,
@@ -218,6 +224,7 @@ enum dcbnl_attrs {
DCB_ATTR_IEEE,
DCB_ATTR_DCBX,
+ DCB_ATTR_FEATCFG,
__DCB_ATTR_ENUM_MAX,
DCB_ATTR_MAX = __DCB_ATTR_ENUM_MAX - 1,
@@ -506,4 +513,30 @@ enum dcbnl_app_attrs {
DCB_APP_ATTR_MAX = __DCB_APP_ATTR_ENUM_MAX - 1,
};
+/**
+ * enum dcbnl_featcfg_attrs - features conifiguration flags
+ *
+ * @DCB_FEATCFG_ATTR_UNDEFINED: unspecified attribute to catch errors
+ * @DCB_FEATCFG_ATTR_ALL: (NLA_FLAG) all features configuration attributes
+ * @DCB_FEATCFG_ATTR_PG: (NLA_U8) configuration flags for priority groups
+ * @DCB_FEATCFG_ATTR_PFC: (NLA_U8) configuration flags for priority
+ * flow control
+ * @DCB_FEATCFG_ATTR_APP: (NLA_U8) configuration flags for application TLV
+ *
+ */
+#define DCB_FEATCFG_ERROR 0x01 /* error in feature resolution */
+#define DCB_FEATCFG_ENABLE 0x02 /* enable feature */
+#define DCB_FEATCFG_WILLING 0x04 /* feature is willing */
+#define DCB_FEATCFG_ADVERTISE 0x08 /* advertise feature */
+enum dcbnl_featcfg_attrs {
+ DCB_FEATCFG_ATTR_UNDEFINED,
+ DCB_FEATCFG_ATTR_ALL,
+ DCB_FEATCFG_ATTR_PG,
+ DCB_FEATCFG_ATTR_PFC,
+ DCB_FEATCFG_ATTR_APP,
+
+ __DCB_FEATCFG_ATTR_ENUM_MAX,
+ DCB_FEATCFG_ATTR_MAX = __DCB_FEATCFG_ATTR_ENUM_MAX - 1,
+};
+
#endif /* __LINUX_DCBNL_H__ */
diff --git a/include/net/dcbnl.h b/include/net/dcbnl.h
index c65347b3cbb..a8e7852b10a 100644
--- a/include/net/dcbnl.h
+++ b/include/net/dcbnl.h
@@ -70,11 +70,14 @@ struct dcbnl_rtnl_ops {
void (*setbcnrp)(struct net_device *, int, u8);
u8 (*setapp)(struct net_device *, u8, u16, u8);
u8 (*getapp)(struct net_device *, u8, u16);
+ u8 (*getfeatcfg)(struct net_device *, int, u8 *);
+ u8 (*setfeatcfg)(struct net_device *, int, u8);
/* DCBX configuration */
u8 (*getdcbx)(struct net_device *);
u8 (*setdcbx)(struct net_device *, u8);
+
};
#endif /* __NET_DCBNL_H__ */
diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c
index 8f83ad859d9..075af0a08d8 100644
--- a/net/dcb/dcbnl.c
+++ b/net/dcb/dcbnl.c
@@ -69,6 +69,7 @@ static const struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = {
[DCB_ATTR_APP] = {.type = NLA_NESTED},
[DCB_ATTR_IEEE] = {.type = NLA_NESTED},
[DCB_ATTR_DCBX] = {.type = NLA_U8},
+ [DCB_ATTR_FEATCFG] = {.type = NLA_NESTED},
};
/* DCB priority flow control to User Priority nested attributes */
@@ -182,6 +183,14 @@ static const struct nla_policy dcbnl_ieee_app[DCB_ATTR_IEEE_APP_MAX + 1] = {
[DCB_ATTR_IEEE_APP] = {.len = sizeof(struct dcb_app)},
};
+/* DCB number of traffic classes nested attributes. */
+static const struct nla_policy dcbnl_featcfg_nest[DCB_FEATCFG_ATTR_MAX + 1] = {
+ [DCB_FEATCFG_ATTR_ALL] = {.type = NLA_FLAG},
+ [DCB_FEATCFG_ATTR_PG] = {.type = NLA_U8},
+ [DCB_FEATCFG_ATTR_PFC] = {.type = NLA_U8},
+ [DCB_FEATCFG_ATTR_APP] = {.type = NLA_U8},
+};
+
static LIST_HEAD(dcb_app_list);
static DEFINE_SPINLOCK(dcb_lock);
@@ -1306,6 +1315,122 @@ static int dcbnl_setdcbx(struct net_device *netdev, struct nlattr **tb,
return ret;
}
+static int dcbnl_getfeatcfg(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ struct sk_buff *dcbnl_skb;
+ struct nlmsghdr *nlh;
+ struct dcbmsg *dcb;
+ struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1], *nest;
+ u8 value;
+ int ret = -EINVAL;
+ int i;
+ int getall = 0;
+
+ if (!tb[DCB_ATTR_FEATCFG] || !netdev->dcbnl_ops->getfeatcfg)
+ return ret;
+
+ ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
+ dcbnl_featcfg_nest);
+ if (ret) {
+ ret = -EINVAL;
+ goto err_out;
+ }
+
+ dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!dcbnl_skb) {
+ ret = -EINVAL;
+ goto err_out;
+ }
+
+ nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
+
+ dcb = NLMSG_DATA(nlh);
+ dcb->dcb_family = AF_UNSPEC;
+ dcb->cmd = DCB_CMD_GFEATCFG;
+
+ nest = nla_nest_start(dcbnl_skb, DCB_ATTR_FEATCFG);
+ if (!nest) {
+ ret = -EINVAL;
+ goto err;
+ }
+
+ if (data[DCB_FEATCFG_ATTR_ALL])
+ getall = 1;
+
+ for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
+ if (!getall && !data[i])
+ continue;
+
+ ret = netdev->dcbnl_ops->getfeatcfg(netdev, i, &value);
+ if (!ret) {
+ ret = nla_put_u8(dcbnl_skb, i, value);
+
+ if (ret) {
+ nla_nest_cancel(dcbnl_skb, nest);
+ ret = -EINVAL;
+ goto err;
+ }
+ } else
+ goto err;
+ }
+ nla_nest_end(dcbnl_skb, nest);
+
+ nlmsg_end(dcbnl_skb, nlh);
+
+ ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
+ if (ret) {
+ ret = -EINVAL;
+ goto err_out;
+ }
+
+ return 0;
+nlmsg_failure:
+err:
+ kfree_skb(dcbnl_skb);
+err_out:
+ return ret;
+}
+
+static int dcbnl_setfeatcfg(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1];
+ int ret = -EINVAL;
+ u8 value;
+ int i;
+
+ if (!tb[DCB_ATTR_FEATCFG] || !netdev->dcbnl_ops->setfeatcfg)
+ return ret;
+
+ ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
+ dcbnl_featcfg_nest);
+
+ if (ret) {
+ ret = -EINVAL;
+ goto err;
+ }
+
+ for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
+ if (data[i] == NULL)
+ continue;
+
+ value = nla_get_u8(data[i]);
+
+ ret = netdev->dcbnl_ops->setfeatcfg(netdev, i, value);
+
+ if (ret)
+ goto operr;
+ }
+
+operr:
+ ret = dcbnl_reply(!!ret, RTM_SETDCB, DCB_CMD_SFEATCFG,
+ DCB_ATTR_FEATCFG, pid, seq, flags);
+
+err:
+ return ret;
+}
+
static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
{
struct net *net = sock_net(skb->sk);
@@ -1427,6 +1552,14 @@ static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
ret = dcbnl_setdcbx(netdev, tb, pid, nlh->nlmsg_seq,
nlh->nlmsg_flags);
goto out;
+ case DCB_CMD_GFEATCFG:
+ ret = dcbnl_getfeatcfg(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
+ case DCB_CMD_SFEATCFG:
+ ret = dcbnl_setfeatcfg(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
default:
goto errout;
}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-19 12:46:25 +0000