mirror of
https://github.com/opnsense/src.git
synced 2026-02-03 20:49:35 -05:00
55c8ba7476
netmap: align codebase to the current upstream (sha 8374e1a7e6941)
Changelist:
- Move large parts of VALE code to a new file and header netmap_bdg.[ch].
This is useful to reuse the code within upcoming projects.
- Improvements and bug fixes to pipes and monitors.
- Introduce nm_os_onattach(), nm_os_onenter() and nm_os_onexit() to
handle differences between FreeBSD and Linux.
- Introduce some new helper functions to handle more host rings and fake
rings (netmap_all_rings(), netmap_real_rings(), ...)
- Added new sysctl to enable/disable hw checksum in emulated netmap mode.
- nm_inject: add support for NS_MOREFRAG
Approved by: gnn (mentor)
Differential Revision: https://reviews.freebsd.org/D17364
128 lines
4.2 KiB
C
128 lines
4.2 KiB
C
#ifndef _NET_NETMAP_BDG_H_
|
|
#define _NET_NETMAP_BDG_H_
|
|
|
|
#if defined(__FreeBSD__)
|
|
#define BDG_RWLOCK_T struct rwlock // struct rwlock
|
|
|
|
#define BDG_RWINIT(b) \
|
|
rw_init_flags(&(b)->bdg_lock, "bdg lock", RW_NOWITNESS)
|
|
#define BDG_WLOCK(b) rw_wlock(&(b)->bdg_lock)
|
|
#define BDG_WUNLOCK(b) rw_wunlock(&(b)->bdg_lock)
|
|
#define BDG_RLOCK(b) rw_rlock(&(b)->bdg_lock)
|
|
#define BDG_RTRYLOCK(b) rw_try_rlock(&(b)->bdg_lock)
|
|
#define BDG_RUNLOCK(b) rw_runlock(&(b)->bdg_lock)
|
|
#define BDG_RWDESTROY(b) rw_destroy(&(b)->bdg_lock)
|
|
|
|
#endif /* __FreeBSD__ */
|
|
|
|
/* $FreeBSD$ */
|
|
|
|
/* XXX Should go away after fixing find_bridge() - Michio */
|
|
#define NM_BDG_HASH 1024 /* forwarding table entries */
|
|
|
|
/* XXX revise this */
|
|
struct nm_hash_ent {
|
|
uint64_t mac; /* the top 2 bytes are the epoch */
|
|
uint64_t ports;
|
|
};
|
|
|
|
/* Default size for the Maximum Frame Size. */
|
|
#define NM_BDG_MFS_DEFAULT 1514
|
|
|
|
/*
|
|
* nm_bridge is a descriptor for a VALE switch.
|
|
* Interfaces for a bridge are all in bdg_ports[].
|
|
* The array has fixed size, an empty entry does not terminate
|
|
* the search, but lookups only occur on attach/detach so we
|
|
* don't mind if they are slow.
|
|
*
|
|
* The bridge is non blocking on the transmit ports: excess
|
|
* packets are dropped if there is no room on the output port.
|
|
*
|
|
* bdg_lock protects accesses to the bdg_ports array.
|
|
* This is a rw lock (or equivalent).
|
|
*/
|
|
#define NM_BDG_IFNAMSIZ IFNAMSIZ
|
|
struct nm_bridge {
|
|
/* XXX what is the proper alignment/layout ? */
|
|
BDG_RWLOCK_T bdg_lock; /* protects bdg_ports */
|
|
int bdg_namelen;
|
|
uint32_t bdg_active_ports;
|
|
char bdg_basename[NM_BDG_IFNAMSIZ];
|
|
|
|
/* Indexes of active ports (up to active_ports)
|
|
* and all other remaining ports.
|
|
*/
|
|
uint32_t bdg_port_index[NM_BDG_MAXPORTS];
|
|
/* used by netmap_bdg_detach_common() */
|
|
uint32_t tmp_bdg_port_index[NM_BDG_MAXPORTS];
|
|
|
|
struct netmap_vp_adapter *bdg_ports[NM_BDG_MAXPORTS];
|
|
|
|
/*
|
|
* Programmable lookup functions to figure out the destination port.
|
|
* It returns either of an index of the destination port,
|
|
* NM_BDG_BROADCAST to broadcast this packet, or NM_BDG_NOPORT not to
|
|
* forward this packet. ring_nr is the source ring index, and the
|
|
* function may overwrite this value to forward this packet to a
|
|
* different ring index.
|
|
* The function is set by netmap_bdg_regops().
|
|
*/
|
|
struct netmap_bdg_ops *bdg_ops;
|
|
|
|
/*
|
|
* Contains the data structure used by the bdg_ops.lookup function.
|
|
* By default points to *ht which is allocated on attach and used by the default lookup
|
|
* otherwise will point to the data structure received by netmap_bdg_regops().
|
|
*/
|
|
void *private_data;
|
|
struct nm_hash_ent *ht;
|
|
|
|
/* Currently used to specify if the bridge is still in use while empty and
|
|
* if it has been put in exclusive mode by an external module, see netmap_bdg_regops()
|
|
* and netmap_bdg_create().
|
|
*/
|
|
#define NM_BDG_ACTIVE 1
|
|
#define NM_BDG_EXCLUSIVE 2
|
|
uint8_t bdg_flags;
|
|
|
|
|
|
#ifdef CONFIG_NET_NS
|
|
struct net *ns;
|
|
#endif /* CONFIG_NET_NS */
|
|
};
|
|
|
|
static inline void *
|
|
nm_bdg_get_auth_token(struct nm_bridge *b)
|
|
{
|
|
return b->ht;
|
|
}
|
|
|
|
/* bridge not in exclusive mode ==> always valid
|
|
* bridge in exclusive mode (created through netmap_bdg_create()) ==> check authentication token
|
|
*/
|
|
static inline int
|
|
nm_bdg_valid_auth_token(struct nm_bridge *b, void *auth_token)
|
|
{
|
|
return !(b->bdg_flags & NM_BDG_EXCLUSIVE) || b->ht == auth_token;
|
|
}
|
|
|
|
int netmap_get_bdg_na(struct nmreq_header *hdr, struct netmap_adapter **na,
|
|
struct netmap_mem_d *nmd, int create, struct netmap_bdg_ops *ops);
|
|
|
|
struct nm_bridge *nm_find_bridge(const char *name, int create, struct netmap_bdg_ops *ops);
|
|
int netmap_bdg_free(struct nm_bridge *b);
|
|
void netmap_bdg_detach_common(struct nm_bridge *b, int hw, int sw);
|
|
int netmap_vp_bdg_ctl(struct nmreq_header *hdr, struct netmap_adapter *na);
|
|
int netmap_vp_reg(struct netmap_adapter *na, int onoff);
|
|
int netmap_bwrap_reg(struct netmap_adapter *, int onoff);
|
|
int netmap_vp_reg(struct netmap_adapter *na, int onoff);
|
|
int netmap_vp_rxsync(struct netmap_kring *kring, int flags);
|
|
int netmap_bwrap_notify(struct netmap_kring *kring, int flags);
|
|
int netmap_bwrap_attach_common(struct netmap_adapter *na,
|
|
struct netmap_adapter *hwna);
|
|
int netmap_bwrap_krings_create_common(struct netmap_adapter *na);
|
|
void netmap_bwrap_krings_delete_common(struct netmap_adapter *na);
|
|
#define NM_NEED_BWRAP (-2)
|
|
#endif /* _NET_NETMAP_BDG_H_ */
|
|
|