diff options
author | Shmulik Ravid <shmulikr@broadcom.com> | 2011-02-27 05:04:38 +0000 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2011-03-02 21:58:55 -0800 |
commit | dc6ed1df5a5f84e45e77e2acb6fd99b995414956 (patch) | |
tree | 3decaad599f29cb097fc370f1ed92a18fa3596ea /net/dcb | |
parent | eed84713bc47ce2f7d675914f297ad9b6227a587 (diff) | |
download | lwn-dc6ed1df5a5f84e45e77e2acb6fd99b995414956.tar.gz lwn-dc6ed1df5a5f84e45e77e2acb6fd99b995414956.zip |
dcbnl: add support for retrieving peer configuration - cee
This patch adds the support for retrieving the remote or peer DCBX
configuration via dcbnl for embedded DCBX stacks supporting the CEE DCBX
standard.
Signed-off-by: Shmulik Ravid <shmulikr@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dcb')
-rw-r--r-- | net/dcb/dcbnl.c | 85 |
1 files changed, 81 insertions, 4 deletions
diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c index 2e6dcf2967e2..d8b4f725b778 100644 --- a/net/dcb/dcbnl.c +++ b/net/dcb/dcbnl.c @@ -1224,7 +1224,9 @@ err: return err; } -static int dcbnl_build_peer_app(struct net_device *netdev, struct sk_buff* skb) +static int dcbnl_build_peer_app(struct net_device *netdev, struct sk_buff* skb, + int app_nested_type, int app_info_type, + int app_entry_type) { struct dcb_peer_app_info info; struct dcb_app *table = NULL; @@ -1256,12 +1258,15 @@ static int dcbnl_build_peer_app(struct net_device *netdev, struct sk_buff* skb) */ err = -EMSGSIZE; - app = nla_nest_start(skb, DCB_ATTR_IEEE_PEER_APP); + app = nla_nest_start(skb, app_nested_type); if (!app) goto nla_put_failure; + if (app_info_type) + NLA_PUT(skb, app_info_type, sizeof(info), &info); + for (i = 0; i < app_count; i++) - NLA_PUT(skb, DCB_ATTR_IEEE_APP, sizeof(struct dcb_app), + NLA_PUT(skb, app_entry_type, sizeof(struct dcb_app), &table[i]); nla_nest_end(skb, app); @@ -1352,7 +1357,10 @@ static int dcbnl_ieee_get(struct net_device *netdev, struct nlattr **tb, } if (ops->peer_getappinfo && ops->peer_getapptable) { - err = dcbnl_build_peer_app(netdev, skb); + err = dcbnl_build_peer_app(netdev, skb, + DCB_ATTR_IEEE_PEER_APP, + DCB_ATTR_IEEE_APP_UNSPEC, + DCB_ATTR_IEEE_APP); if (err) goto nla_put_failure; } @@ -1510,6 +1518,71 @@ err: return ret; } +/* Handle CEE DCBX GET commands. */ +static int dcbnl_cee_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 *cee; + 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_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; + + /* get 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); + 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); @@ -1639,6 +1712,10 @@ static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) ret = dcbnl_setfeatcfg(netdev, tb, pid, nlh->nlmsg_seq, nlh->nlmsg_flags); goto out; + case DCB_CMD_CEE_GET: + ret = dcbnl_cee_get(netdev, tb, pid, nlh->nlmsg_seq, + nlh->nlmsg_flags); + goto out; default: goto errout; } |