mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-25 20:14:25 +08:00
b67c540b8a
On ingress, a network device such as a switch assigns to packets priority based on various criteria. Common options include interpreting PCP and DSCP fields according to user configuration. When a packet egresses the switch, a reverse process may rewrite PCP and/or DSCP values according to packet priority. The following three functions support a) obtaining a DSCP-to-priority map or vice versa, and b) finding default-priority entries in APP database. The DCB subsystem supports for APP entries a very generous M:N mapping between priorities and protocol identifiers. Understandably, several (say) DSCP values can map to the same priority. But this asymmetry holds the other way around as well--one priority can map to several DSCP values. For this reason, the following functions operate in terms of bitmaps, with ones in positions that match some APP entry. - dcb_ieee_getapp_dscp_prio_mask_map() to compute for a given netdevice a map of DSCP-to-priority-mask, which gives for each DSCP value a bitmap of priorities related to that DSCP value by APP, along the lines of dcb_ieee_getapp_mask(). - dcb_ieee_getapp_prio_dscp_mask_map() similarly to compute for a given netdevice a map from priorities to a bitmap of DSCPs. - dcb_ieee_getapp_default_prio_mask() which finds all default-priority rules for a given port in APP database, and returns a mask of priorities allowed by these default-priority rules. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
124 lines
4.8 KiB
C
124 lines
4.8 KiB
C
/*
|
|
* Copyright (c) 2008, Intel Corporation.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along with
|
|
* this program; if not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* Author: Lucy Liu <lucy.liu@intel.com>
|
|
*/
|
|
|
|
#ifndef __NET_DCBNL_H__
|
|
#define __NET_DCBNL_H__
|
|
|
|
#include <linux/dcbnl.h>
|
|
|
|
struct dcb_app_type {
|
|
int ifindex;
|
|
struct dcb_app app;
|
|
struct list_head list;
|
|
u8 dcbx;
|
|
};
|
|
|
|
int dcb_setapp(struct net_device *, struct dcb_app *);
|
|
u8 dcb_getapp(struct net_device *, struct dcb_app *);
|
|
int dcb_ieee_setapp(struct net_device *, struct dcb_app *);
|
|
int dcb_ieee_delapp(struct net_device *, struct dcb_app *);
|
|
u8 dcb_ieee_getapp_mask(struct net_device *, struct dcb_app *);
|
|
|
|
struct dcb_ieee_app_prio_map {
|
|
u64 map[IEEE_8021QAZ_MAX_TCS];
|
|
};
|
|
void dcb_ieee_getapp_prio_dscp_mask_map(const struct net_device *dev,
|
|
struct dcb_ieee_app_prio_map *p_map);
|
|
|
|
struct dcb_ieee_app_dscp_map {
|
|
u8 map[64];
|
|
};
|
|
void dcb_ieee_getapp_dscp_prio_mask_map(const struct net_device *dev,
|
|
struct dcb_ieee_app_dscp_map *p_map);
|
|
u8 dcb_ieee_getapp_default_prio_mask(const struct net_device *dev);
|
|
|
|
int dcbnl_ieee_notify(struct net_device *dev, int event, int cmd,
|
|
u32 seq, u32 pid);
|
|
int dcbnl_cee_notify(struct net_device *dev, int event, int cmd,
|
|
u32 seq, u32 pid);
|
|
|
|
/*
|
|
* 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_getmaxrate) (struct net_device *, struct ieee_maxrate *);
|
|
int (*ieee_setmaxrate) (struct net_device *, struct ieee_maxrate *);
|
|
int (*ieee_getqcn) (struct net_device *, struct ieee_qcn *);
|
|
int (*ieee_setqcn) (struct net_device *, struct ieee_qcn *);
|
|
int (*ieee_getqcnstats) (struct net_device *, struct ieee_qcn_stats *);
|
|
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 *);
|
|
int (*ieee_delapp) (struct net_device *, struct dcb_app *);
|
|
int (*ieee_peer_getets) (struct net_device *, struct ieee_ets *);
|
|
int (*ieee_peer_getpfc) (struct net_device *, struct ieee_pfc *);
|
|
|
|
/* CEE std */
|
|
u8 (*getstate)(struct net_device *);
|
|
u8 (*setstate)(struct net_device *, u8);
|
|
void (*getpermhwaddr)(struct net_device *, u8 *);
|
|
void (*setpgtccfgtx)(struct net_device *, int, u8, u8, u8, u8);
|
|
void (*setpgbwgcfgtx)(struct net_device *, int, u8);
|
|
void (*setpgtccfgrx)(struct net_device *, int, u8, u8, u8, u8);
|
|
void (*setpgbwgcfgrx)(struct net_device *, int, u8);
|
|
void (*getpgtccfgtx)(struct net_device *, int, u8 *, u8 *, u8 *, u8 *);
|
|
void (*getpgbwgcfgtx)(struct net_device *, int, u8 *);
|
|
void (*getpgtccfgrx)(struct net_device *, int, u8 *, u8 *, u8 *, u8 *);
|
|
void (*getpgbwgcfgrx)(struct net_device *, int, u8 *);
|
|
void (*setpfccfg)(struct net_device *, int, u8);
|
|
void (*getpfccfg)(struct net_device *, int, u8 *);
|
|
u8 (*setall)(struct net_device *);
|
|
u8 (*getcap)(struct net_device *, int, u8 *);
|
|
int (*getnumtcs)(struct net_device *, int, u8 *);
|
|
int (*setnumtcs)(struct net_device *, int, u8);
|
|
u8 (*getpfcstate)(struct net_device *);
|
|
void (*setpfcstate)(struct net_device *, u8);
|
|
void (*getbcncfg)(struct net_device *, int, u32 *);
|
|
void (*setbcncfg)(struct net_device *, int, u32);
|
|
void (*getbcnrp)(struct net_device *, int, u8 *);
|
|
void (*setbcnrp)(struct net_device *, int, u8);
|
|
int (*setapp)(struct net_device *, u8, u16, u8);
|
|
int (*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);
|
|
|
|
/* peer apps */
|
|
int (*peer_getappinfo)(struct net_device *, struct dcb_peer_app_info *,
|
|
u16 *);
|
|
int (*peer_getapptable)(struct net_device *, struct dcb_app *);
|
|
|
|
/* CEE peer */
|
|
int (*cee_peer_getpg) (struct net_device *, struct cee_pg *);
|
|
int (*cee_peer_getpfc) (struct net_device *, struct cee_pfc *);
|
|
|
|
/* buffer settings */
|
|
int (*dcbnl_getbuffer)(struct net_device *, struct dcbnl_buffer *);
|
|
int (*dcbnl_setbuffer)(struct net_device *, struct dcbnl_buffer *);
|
|
};
|
|
|
|
#endif /* __NET_DCBNL_H__ */
|