diff options
| -rw-r--r-- | include/linux/dcbnl.h | 106 | ||||
| -rw-r--r-- | include/net/dcbnl.h | 11 | ||||
| -rw-r--r-- | net/dcb/dcbnl.c | 131 |
3 files changed, 248 insertions, 0 deletions
diff --git a/include/linux/dcbnl.h b/include/linux/dcbnl.h index 8723491..287b561 100644 --- a/include/linux/dcbnl.h +++ b/include/linux/dcbnl.h @@ -22,6 +22,87 @@ #include <linux/types.h> +/* IEEE 802.1Qaz std supported values */ +#define IEEE_8021QAZ_MAX_TCS 8 + +/* This structure contains the IEEE 802.1Qaz ETS managed object + * + * @willing: willing bit in ETS configuratin TLV + * @ets_cap: indicates supported capacity of ets feature + * @cbs: credit based shaper ets algorithm supported + * @tc_tx_bw: tc tx bandwidth indexed by traffic class + * @tc_rx_bw: tc rx bandwidth indexed by traffic class + * @tc_tsa: TSA Assignment table, indexed by traffic class + * @prio_tc: priority assignment table mapping 8021Qp to traffic class + * @tc_reco_bw: recommended tc bandwidth indexed by traffic class for TLV + * @tc_reco_tsa: recommended tc bandwidth indexed by traffic class for TLV + * @reco_prio_tc: recommended tc tx bandwidth indexed by traffic class for TLV + * + * Recommended values are used to set fields in the ETS recommendation TLV + * with hardware offloaded LLDP. + * + * ---- + * TSA Assignment 8 bit identifiers + * 0 strict priority + * 1 credit-based shaper + * 2 enhanced transmission selection + * 3-254 reserved + * 255 vendor specific + */ +struct ieee_ets { + __u8 willing; + __u8 ets_cap; + __u8 cbs; + __u8 tc_tx_bw[IEEE_8021QAZ_MAX_TCS]; + __u8 tc_rx_bw[IEEE_8021QAZ_MAX_TCS]; + __u8 tc_tsa[IEEE_8021QAZ_MAX_TCS]; + __u8 prio_tc[IEEE_8021QAZ_MAX_TCS]; + __u8 tc_reco_bw[IEEE_8021QAZ_MAX_TCS]; + __u8 tc_reco_tsa[IEEE_8021QAZ_MAX_TCS]; + __u8 reco_prio_tc[IEEE_8021QAZ_MAX_TCS]; +}; + +/* This structure contains the IEEE 802.1Qaz PFC managed object + * + * @pfc_cap: Indicates the number of traffic classes on the local device + * that may simultaneously have PFC enabled. + * @pfc_en: bitmap indicating pfc enabled traffic classes + * @mbc: enable macsec bypass capability + * @delay: the allowance made for a round-trip propagation delay of the + * link in bits. + * @requests: count of the sent pfc frames + * @indications: count of the received pfc frames + */ +struct ieee_pfc { + __u8 pfc_cap; + __u8 pfc_en; + __u8 mbc; + __u16 delay; + __u64 requests[IEEE_8021QAZ_MAX_TCS]; + __u64 indications[IEEE_8021QAZ_MAX_TCS]; +}; + +/* This structure contains the IEEE 802.1Qaz APP managed object + * + * @selector: protocol identifier type + * @protocol: protocol of type indicated + * @priority: 3-bit unsigned integer indicating priority + * + * ---- + * Selector field values + * 0 Reserved + * 1 Ethertype + * 2 Well known port number over TCP or SCTP + * 3 Well known port number over UDP or DCCP + * 4 Well known port number over TCP, SCTP, UDP, or DCCP + * 5-7 Reserved + */ +struct dcb_app { + __u8 selector; + __u32 protocol; + __u8 priority; +}; + struct dcbmsg { __u8 dcb_family; __u8 cmd; @@ -50,6 +131,8 @@ struct dcbmsg { * @DCB_CMD_SBCN: get backward congestion notification configration. * @DCB_CMD_GAPP: get application protocol configuration * @DCB_CMD_SAPP: set application protocol configuration + * @DCB_CMD_IEEE_SET: set IEEE 802.1Qaz configuration + * @DCB_CMD_IEEE_GET: get IEEE 802.1Qaz configuration */ enum dcbnl_commands { DCB_CMD_UNDEFINED, @@ -83,6 +166,9 @@ enum dcbnl_commands { DCB_CMD_GAPP, DCB_CMD_SAPP, + DCB_CMD_IEEE_SET, + DCB_CMD_IEEE_GET, + __DCB_CMD_ENUM_MAX, DCB_CMD_MAX = __DCB_CMD_ENUM_MAX - 1, }; @@ -102,6 +188,7 @@ enum dcbnl_commands { * @DCB_ATTR_CAP: DCB capabilities of the device (NLA_NESTED) * @DCB_ATTR_NUMTCS: number of traffic classes supported (NLA_NESTED) * @DCB_ATTR_BCN: backward congestion notification configuration (NLA_NESTED) + * @DCB_ATTR_IEEE: IEEE 802.1Qaz supported attributes (NLA_NESTED) */ enum dcbnl_attrs { DCB_ATTR_UNDEFINED, @@ -119,10 +206,29 @@ enum dcbnl_attrs { DCB_ATTR_BCN, DCB_ATTR_APP, + /* IEEE std attributes */ + DCB_ATTR_IEEE, + __DCB_ATTR_ENUM_MAX, DCB_ATTR_MAX = __DCB_ATTR_ENUM_MAX - 1, }; +enum ieee_attrs { + DCB_ATTR_IEEE_UNSPEC, + DCB_ATTR_IEEE_ETS, + DCB_ATTR_IEEE_PFC, + DCB_ATTR_IEEE_APP_TABLE, + __DCB_ATTR_IEEE_MAX +}; +#define DCB_ATTR_IEEE_MAX (__DCB_ATTR_IEEE_MAX - 1) + +enum ieee_attrs_app { + DCB_ATTR_IEEE_APP_UNSPEC, + DCB_ATTR_IEEE_APP, + __DCB_ATTR_IEEE_APP_MAX +}; +#define DCB_ATTR_IEEE_APP_MAX (__DCB_ATTR_IEEE_APP_MAX - 1) + /** * enum dcbnl_pfc_attrs - DCB Priority Flow Control user priority nested attrs * diff --git a/include/net/dcbnl.h b/include/net/dcbnl.h index b36ac7e..e2d841e 100644 --- a/include/net/dcbnl.h +++ b/include/net/dcbnl.h @@ -20,11 +20,22 @@ #ifndef __NET_DCBNL_H__ #define __NET_DCBNL_H__ +#include <linux/dcbnl.h> + /* * Ops struct for the netlink callbacks. Used by DCB-enabled drivers through * the netdevice struct. */ struct dcbnl_rtnl_ops { + /* IEEE 802.1Qaz std */ + int (*ieee_getets) (struct net_device *, struct ieee_ets *); + int (*ieee_setets) (struct net_device *, struct ieee_ets *); + int (*ieee_getpfc) (struct net_device *, struct ieee_pfc *); + int (*ieee_setpfc) (struct net_device *, struct ieee_pfc *); + int (*ieee_getapp) (struct net_device *, struct dcb_app *); + int (*ieee_setapp) (struct net_device *, struct dcb_app *); + + /* CEE std */ u8 (*getstate)(struct net_device *); u8 (*setstate)(struct net_device *, u8); void (*getpermhwaddr)(struct net_device *, u8 *); diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c index 19ac2b9..2ff9084 100644 --- a/net/dcb/dcbnl.c +++ b/net/dcb/dcbnl.c @@ -66,6 +66,7 @@ static const struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = { [DCB_ATTR_PFC_STATE] = {.type = NLA_U8}, [DCB_ATTR_BCN] = {.type = NLA_NESTED}, [DCB_ATTR_APP] = {.type = NLA_NESTED}, + [DCB_ATTR_IEEE] = {.type = NLA_NESTED}, }; /* DCB priority flow control to User Priority nested attributes */ @@ -167,6 +168,17 @@ static const struct nla_policy dcbnl_app_nest[DCB_APP_ATTR_MAX + 1] = { [DCB_APP_ATTR_PRIORITY] = {.type = NLA_U8}, }; +/* IEEE 802.1Qaz nested attributes. */ +static const struct nla_policy dcbnl_ieee_policy[DCB_ATTR_IEEE_MAX + 1] = { + [DCB_ATTR_IEEE_ETS] = {.len = sizeof(struct ieee_ets)}, + [DCB_ATTR_IEEE_PFC] = {.len = sizeof(struct ieee_pfc)}, + [DCB_ATTR_IEEE_APP_TABLE] = {.type = NLA_NESTED}, +}; + +static const struct nla_policy dcbnl_ieee_app[DCB_ATTR_IEEE_APP_MAX + 1] = { + [DCB_ATTR_IEEE_APP] = {.len = sizeof(struct dcb_app)}, +}; + /* standard netlink reply call */ static int dcbnl_reply(u8 value, u8 event, u8 cmd, u8 attr, u32 pid, u32 seq, u16 flags) @@ -1118,6 +1130,117 @@ err: return ret; } +/* Handle IEEE 802.1Qaz SET commands. If any requested operation can not + * be completed the entire msg is aborted and error value is returned. + * No attempt is made to reconcile the case where only part of the + * cmd can be completed. + */ +static int dcbnl_ieee_set(struct net_device *netdev, struct nlattr **tb, + u32 pid, u32 seq, u16 flags) +{ + const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; + struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1]; + int err = -EOPNOTSUPP; + + if (!ops) + goto err; + + err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX, + tb[DCB_ATTR_IEEE], dcbnl_ieee_policy); + if (err) + goto err; + + if (ieee[DCB_ATTR_IEEE_ETS] && ops->ieee_setets) { + struct ieee_ets *ets = nla_data(ieee[DCB_ATTR_IEEE_ETS]); + err = ops->ieee_setets(netdev, ets); + if (err) + goto err; + } + + if (ieee[DCB_ATTR_IEEE_PFC] && ops->ieee_setets) { + struct ieee_pfc *pfc = nla_data(ieee[DCB_ATTR_IEEE_PFC]); + err = ops->ieee_setpfc(netdev, pfc); + if (err) + goto err; + } + + if (ieee[DCB_ATTR_IEEE_APP_TABLE] && ops->ieee_setapp) { + struct nlattr *attr; + int rem; + + nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) { + struct dcb_app *app_data; + if (nla_type(attr) != DCB_ATTR_IEEE_APP) + continue; + app_data = nla_data(attr); + err = ops->ieee_setapp(netdev, app_data); + if (err) + goto err; + } + } + +err: + dcbnl_reply(err, RTM_SETDCB, DCB_CMD_IEEE_SET, DCB_ATTR_IEEE, + pid, seq, flags); + return err; +} + + +/* Handle IEEE 802.1Qaz GET commands. */ +static int dcbnl_ieee_get(struct net_device *netdev, struct nlattr **tb, + u32 pid, u32 seq, u16 flags) +{ + struct sk_buff *skb; + struct nlmsghdr *nlh; + struct dcbmsg *dcb; + struct nlattr *ieee; + const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; + int err; + + if (!ops) + return -EOPNOTSUPP; + + skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); + if (!skb) + return -ENOBUFS; + + nlh = NLMSG_NEW(skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); + + dcb = NLMSG_DATA(nlh); + dcb->dcb_family = AF_UNSPEC; + dcb->cmd = DCB_CMD_IEEE_GET; + + NLA_PUT_STRING(skb, DCB_ATTR_IFNAME, netdev->name); + + ieee = nla_nest_start(skb, DCB_ATTR_IEEE); + if (!ieee) + goto nla_put_failure; + + if (ops->ieee_getets) { + struct ieee_ets ets; + err = ops->ieee_getets(netdev, &ets); + if (!err) + NLA_PUT(skb, DCB_ATTR_IEEE_ETS, sizeof(ets), &ets); + } + + if (ops->ieee_getpfc) { + struct ieee_pfc pfc; + err = ops->ieee_getpfc(netdev, &pfc); + if (!err) + NLA_PUT(skb, DCB_ATTR_IEEE_PFC, sizeof(pfc), &pfc); + } + + nla_nest_end(skb, ieee); + nlmsg_end(skb, nlh); + + return rtnl_unicast(skb, &init_net, pid); +nla_put_failure: + nlmsg_cancel(skb, nlh); +nlmsg_failure: + kfree_skb(skb); + return -1; +} + static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) { struct net *net = sock_net(skb->sk); @@ -1223,6 +1346,14 @@ static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) ret = dcbnl_setapp(netdev, tb, pid, nlh->nlmsg_seq, nlh->nlmsg_flags); goto out; + case DCB_CMD_IEEE_SET: + ret = dcbnl_ieee_set(netdev, tb, pid, nlh->nlmsg_seq, + nlh->nlmsg_flags); + goto out; + case DCB_CMD_IEEE_GET: + ret = dcbnl_ieee_get(netdev, tb, pid, nlh->nlmsg_seq, + nlh->nlmsg_flags); + goto out; default: goto errout; } |
