diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/dcb/dcbnl.c | 415 |
1 files changed, 225 insertions, 190 deletions
diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c index d5b45a201c1b..6a015f211fee 100644 --- a/net/dcb/dcbnl.c +++ b/net/dcb/dcbnl.c @@ -1310,8 +1310,196 @@ nla_put_failure: return err; } -int dcbnl_notify(struct net_device *dev, int event, int cmd, - u32 seq, u32 pid) +static int dcbnl_cee_pg_fill(struct sk_buff *skb, struct net_device *dev, + int dir) +{ + u8 pgid, up_map, prio, tc_pct; + const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops; + int i = dir ? DCB_ATTR_CEE_TX_PG : DCB_ATTR_CEE_RX_PG; + struct nlattr *pg = nla_nest_start(skb, i); + + if (!pg) + goto nla_put_failure; + + for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) { + struct nlattr *tc_nest = nla_nest_start(skb, i); + + if (!tc_nest) + goto nla_put_failure; + + pgid = DCB_ATTR_VALUE_UNDEFINED; + prio = DCB_ATTR_VALUE_UNDEFINED; + tc_pct = DCB_ATTR_VALUE_UNDEFINED; + up_map = DCB_ATTR_VALUE_UNDEFINED; + + if (!dir) + ops->getpgtccfgrx(dev, i - DCB_PG_ATTR_TC_0, + &prio, &pgid, &tc_pct, &up_map); + else + ops->getpgtccfgtx(dev, i - DCB_PG_ATTR_TC_0, + &prio, &pgid, &tc_pct, &up_map); + + NLA_PUT_U8(skb, DCB_TC_ATTR_PARAM_PGID, pgid); + NLA_PUT_U8(skb, DCB_TC_ATTR_PARAM_UP_MAPPING, up_map); + NLA_PUT_U8(skb, DCB_TC_ATTR_PARAM_STRICT_PRIO, prio); + NLA_PUT_U8(skb, DCB_TC_ATTR_PARAM_BW_PCT, tc_pct); + nla_nest_end(skb, tc_nest); + } + + for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) { + tc_pct = DCB_ATTR_VALUE_UNDEFINED; + + if (!dir) + ops->getpgbwgcfgrx(dev, i - DCB_PG_ATTR_BW_ID_0, + &tc_pct); + else + ops->getpgbwgcfgtx(dev, i - DCB_PG_ATTR_BW_ID_0, + &tc_pct); + NLA_PUT_U8(skb, i, tc_pct); + } + nla_nest_end(skb, pg); + return 0; + +nla_put_failure: + return -EMSGSIZE; +} + +static int dcbnl_cee_fill(struct sk_buff *skb, struct net_device *netdev) +{ + struct nlattr *cee, *app; + struct dcb_app_type *itr; + const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; + int dcbx, i, err = -EMSGSIZE; + u8 value; + + NLA_PUT_STRING(skb, DCB_ATTR_IFNAME, netdev->name); + + cee = nla_nest_start(skb, DCB_ATTR_CEE); + if (!cee) + goto nla_put_failure; + + /* local pg */ + if (ops->getpgtccfgtx && ops->getpgbwgcfgtx) { + err = dcbnl_cee_pg_fill(skb, netdev, 1); + if (err) + goto nla_put_failure; + } + + if (ops->getpgtccfgrx && ops->getpgbwgcfgrx) { + err = dcbnl_cee_pg_fill(skb, netdev, 0); + if (err) + goto nla_put_failure; + } + + /* local pfc */ + if (ops->getpfccfg) { + struct nlattr *pfc_nest = nla_nest_start(skb, DCB_ATTR_CEE_PFC); + + if (!pfc_nest) + goto nla_put_failure; + + for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) { + ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0, &value); + NLA_PUT_U8(skb, i, value); + } + nla_nest_end(skb, pfc_nest); + } + + /* local app */ + spin_lock(&dcb_lock); + app = nla_nest_start(skb, DCB_ATTR_CEE_APP_TABLE); + if (!app) + goto nla_put_failure; + + list_for_each_entry(itr, &dcb_app_list, list) { + if (strncmp(itr->name, netdev->name, IFNAMSIZ) == 0) { + struct nlattr *app_nest = nla_nest_start(skb, + DCB_ATTR_APP); + if (!app_nest) + goto dcb_unlock; + + err = nla_put_u8(skb, DCB_APP_ATTR_IDTYPE, + itr->app.selector); + if (err) + goto dcb_unlock; + + err = nla_put_u16(skb, DCB_APP_ATTR_ID, + itr->app.protocol); + if (err) + goto dcb_unlock; + + err = nla_put_u8(skb, DCB_APP_ATTR_PRIORITY, + itr->app.priority); + if (err) + goto dcb_unlock; + + nla_nest_end(skb, app_nest); + } + } + nla_nest_end(skb, app); + + if (netdev->dcbnl_ops->getdcbx) + dcbx = netdev->dcbnl_ops->getdcbx(netdev); + else + dcbx = -EOPNOTSUPP; + + spin_unlock(&dcb_lock); + + /* features flags */ + if (ops->getfeatcfg) { + struct nlattr *feat = nla_nest_start(skb, DCB_ATTR_CEE_FEAT); + if (!feat) + goto nla_put_failure; + + for (i = DCB_FEATCFG_ATTR_ALL + 1; i <= DCB_FEATCFG_ATTR_MAX; + i++) + if (!ops->getfeatcfg(netdev, i, &value)) + NLA_PUT_U8(skb, i, value); + + nla_nest_end(skb, feat); + } + + /* peer info if available */ + if (ops->cee_peer_getpg) { + struct cee_pg pg; + err = ops->cee_peer_getpg(netdev, &pg); + if (!err) + NLA_PUT(skb, DCB_ATTR_CEE_PEER_PG, sizeof(pg), &pg); + } + + if (ops->cee_peer_getpfc) { + struct cee_pfc pfc; + err = ops->cee_peer_getpfc(netdev, &pfc); + if (!err) + NLA_PUT(skb, DCB_ATTR_CEE_PEER_PFC, sizeof(pfc), &pfc); + } + + if (ops->peer_getappinfo && ops->peer_getapptable) { + err = dcbnl_build_peer_app(netdev, skb, + DCB_ATTR_CEE_PEER_APP_TABLE, + DCB_ATTR_CEE_PEER_APP_INFO, + DCB_ATTR_CEE_PEER_APP); + if (err) + goto nla_put_failure; + } + nla_nest_end(skb, cee); + + /* DCBX state */ + if (dcbx >= 0) { + err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx); + if (err) + goto nla_put_failure; + } + return 0; + +dcb_unlock: + spin_unlock(&dcb_lock); +nla_put_failure: + return err; +} + +static int dcbnl_notify(struct net_device *dev, int event, int cmd, + u32 seq, u32 pid, int dcbx_ver) { struct net *net = dev_net(dev); struct sk_buff *skb; @@ -1337,7 +1525,11 @@ int dcbnl_notify(struct net_device *dev, int event, int cmd, dcb->dcb_family = AF_UNSPEC; dcb->cmd = cmd; - err = dcbnl_ieee_fill(skb, dev); + if (dcbx_ver == DCB_CAP_DCBX_VER_IEEE) + err = dcbnl_ieee_fill(skb, dev); + else + err = dcbnl_cee_fill(skb, dev); + if (err < 0) { /* Report error to broadcast listeners */ nlmsg_cancel(skb, nlh); @@ -1351,7 +1543,20 @@ int dcbnl_notify(struct net_device *dev, int event, int cmd, return err; } -EXPORT_SYMBOL(dcbnl_notify); + +int dcbnl_ieee_notify(struct net_device *dev, int event, int cmd, + u32 seq, u32 pid) +{ + return dcbnl_notify(dev, event, cmd, seq, pid, DCB_CAP_DCBX_VER_IEEE); +} +EXPORT_SYMBOL(dcbnl_ieee_notify); + +int dcbnl_cee_notify(struct net_device *dev, int event, int cmd, + u32 seq, u32 pid) +{ + return dcbnl_notify(dev, event, cmd, seq, pid, DCB_CAP_DCBX_VER_CEE); +} +EXPORT_SYMBOL(dcbnl_cee_notify); /* Handle IEEE 802.1Qaz SET commands. If any requested operation can not * be completed the entire msg is aborted and error value is returned. @@ -1411,7 +1616,7 @@ static int dcbnl_ieee_set(struct net_device *netdev, struct nlattr **tb, err: dcbnl_reply(err, RTM_SETDCB, DCB_CMD_IEEE_SET, DCB_ATTR_IEEE, pid, seq, flags); - dcbnl_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_SET, seq, 0); + dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_SET, seq, 0); return err; } @@ -1495,7 +1700,7 @@ static int dcbnl_ieee_del(struct net_device *netdev, struct nlattr **tb, err: dcbnl_reply(err, RTM_SETDCB, DCB_CMD_IEEE_DEL, DCB_ATTR_IEEE, pid, seq, flags); - dcbnl_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_DEL, seq, 0); + dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_DEL, seq, 0); return err; } @@ -1642,72 +1847,16 @@ err: return ret; } -static int dcbnl_cee_pg_fill(struct sk_buff *skb, struct net_device *dev, - int dir) -{ - u8 pgid, up_map, prio, tc_pct; - const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops; - int i = dir ? DCB_ATTR_CEE_TX_PG : DCB_ATTR_CEE_RX_PG; - struct nlattr *pg = nla_nest_start(skb, i); - - if (!pg) - goto nla_put_failure; - - for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) { - struct nlattr *tc_nest = nla_nest_start(skb, i); - - if (!tc_nest) - goto nla_put_failure; - - pgid = DCB_ATTR_VALUE_UNDEFINED; - prio = DCB_ATTR_VALUE_UNDEFINED; - tc_pct = DCB_ATTR_VALUE_UNDEFINED; - up_map = DCB_ATTR_VALUE_UNDEFINED; - - if (!dir) - ops->getpgtccfgrx(dev, i - DCB_PG_ATTR_TC_0, - &prio, &pgid, &tc_pct, &up_map); - else - ops->getpgtccfgtx(dev, i - DCB_PG_ATTR_TC_0, - &prio, &pgid, &tc_pct, &up_map); - - NLA_PUT_U8(skb, DCB_TC_ATTR_PARAM_PGID, pgid); - NLA_PUT_U8(skb, DCB_TC_ATTR_PARAM_UP_MAPPING, up_map); - NLA_PUT_U8(skb, DCB_TC_ATTR_PARAM_STRICT_PRIO, prio); - NLA_PUT_U8(skb, DCB_TC_ATTR_PARAM_BW_PCT, tc_pct); - nla_nest_end(skb, tc_nest); - } - - for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) { - tc_pct = DCB_ATTR_VALUE_UNDEFINED; - - if (!dir) - ops->getpgbwgcfgrx(dev, i - DCB_PG_ATTR_BW_ID_0, - &tc_pct); - else - ops->getpgbwgcfgtx(dev, i - DCB_PG_ATTR_BW_ID_0, - &tc_pct); - NLA_PUT_U8(skb, i, tc_pct); - } - nla_nest_end(skb, pg); - return 0; - -nla_put_failure: - return -EMSGSIZE; -} - /* Handle CEE DCBX GET commands. */ static int dcbnl_cee_get(struct net_device *netdev, struct nlattr **tb, u32 pid, u32 seq, u16 flags) { + struct net *net = dev_net(netdev); struct sk_buff *skb; struct nlmsghdr *nlh; struct dcbmsg *dcb; - struct nlattr *cee, *app; - struct dcb_app_type *itr; const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; - int dcbx, i, err = -EMSGSIZE; - u8 value; + int err; if (!ops) return -EOPNOTSUPP; @@ -1716,139 +1865,25 @@ static int dcbnl_cee_get(struct net_device *netdev, struct nlattr **tb, if (!skb) return -ENOBUFS; - nlh = NLMSG_NEW(skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); + nlh = nlmsg_put(skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); + if (nlh == NULL) { + nlmsg_free(skb); + return -EMSGSIZE; + } dcb = NLMSG_DATA(nlh); dcb->dcb_family = AF_UNSPEC; dcb->cmd = DCB_CMD_CEE_GET; - NLA_PUT_STRING(skb, DCB_ATTR_IFNAME, netdev->name); - - cee = nla_nest_start(skb, DCB_ATTR_CEE); - if (!cee) - goto nla_put_failure; - - /* local pg */ - if (ops->getpgtccfgtx && ops->getpgbwgcfgtx) { - err = dcbnl_cee_pg_fill(skb, netdev, 1); - if (err) - goto nla_put_failure; - } - - if (ops->getpgtccfgrx && ops->getpgbwgcfgrx) { - err = dcbnl_cee_pg_fill(skb, netdev, 0); - if (err) - goto nla_put_failure; - } - - /* local pfc */ - if (ops->getpfccfg) { - struct nlattr *pfc_nest = nla_nest_start(skb, DCB_ATTR_CEE_PFC); - - if (!pfc_nest) - goto nla_put_failure; + err = dcbnl_cee_fill(skb, netdev); - for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) { - ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0, &value); - NLA_PUT_U8(skb, i, value); - } - nla_nest_end(skb, pfc_nest); - } - - /* local app */ - spin_lock(&dcb_lock); - app = nla_nest_start(skb, DCB_ATTR_CEE_APP_TABLE); - if (!app) - goto nla_put_failure; - - list_for_each_entry(itr, &dcb_app_list, list) { - if (strncmp(itr->name, netdev->name, IFNAMSIZ) == 0) { - struct nlattr *app_nest = nla_nest_start(skb, - DCB_ATTR_APP); - if (!app_nest) - goto dcb_unlock; - - err = nla_put_u8(skb, DCB_APP_ATTR_IDTYPE, - itr->app.selector); - if (err) - goto dcb_unlock; - - err = nla_put_u16(skb, DCB_APP_ATTR_ID, - itr->app.protocol); - if (err) - goto dcb_unlock; - - err = nla_put_u8(skb, DCB_APP_ATTR_PRIORITY, - itr->app.priority); - if (err) - goto dcb_unlock; - - nla_nest_end(skb, app_nest); - } - } - nla_nest_end(skb, app); - - if (netdev->dcbnl_ops->getdcbx) - dcbx = netdev->dcbnl_ops->getdcbx(netdev); - else - dcbx = -EOPNOTSUPP; - - spin_unlock(&dcb_lock); - - /* features flags */ - if (ops->getfeatcfg) { - struct nlattr *feat = nla_nest_start(skb, DCB_ATTR_CEE_FEAT); - if (!feat) - goto nla_put_failure; - - for (i = DCB_FEATCFG_ATTR_ALL + 1; i <= DCB_FEATCFG_ATTR_MAX; - i++) - if (!ops->getfeatcfg(netdev, i, &value)) - NLA_PUT_U8(skb, i, value); - - nla_nest_end(skb, feat); - } - - /* peer info if available */ - if (ops->cee_peer_getpg) { - struct cee_pg pg; - err = ops->cee_peer_getpg(netdev, &pg); - if (!err) - NLA_PUT(skb, DCB_ATTR_CEE_PEER_PG, sizeof(pg), &pg); - } - - if (ops->cee_peer_getpfc) { - struct cee_pfc pfc; - err = ops->cee_peer_getpfc(netdev, &pfc); - if (!err) - NLA_PUT(skb, DCB_ATTR_CEE_PEER_PFC, sizeof(pfc), &pfc); - } - - if (ops->peer_getappinfo && ops->peer_getapptable) { - err = dcbnl_build_peer_app(netdev, skb, - DCB_ATTR_CEE_PEER_APP_TABLE, - DCB_ATTR_CEE_PEER_APP_INFO, - DCB_ATTR_CEE_PEER_APP); - if (err) - goto nla_put_failure; - } - nla_nest_end(skb, cee); - - /* DCBX state */ - if (dcbx >= 0) { - err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx); - if (err) - goto nla_put_failure; + if (err < 0) { + nlmsg_cancel(skb, nlh); + nlmsg_free(skb); + } else { + nlmsg_end(skb, nlh); + err = rtnl_unicast(skb, net, pid); } - nlmsg_end(skb, nlh); - return rtnl_unicast(skb, &init_net, pid); - -dcb_unlock: - spin_unlock(&dcb_lock); -nla_put_failure: - nlmsg_cancel(skb, nlh); -nlmsg_failure: - nlmsg_free(skb); return err; } |