132 lines
3.3 KiB
C
132 lines
3.3 KiB
C
/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
|
|
/* Copyright (C) 2016-2019 Netronome Systems, Inc. */
|
|
|
|
#ifndef NFP_CCM_H
|
|
#define NFP_CCM_H 1
|
|
|
|
#include <linux/bitmap.h>
|
|
#include <linux/skbuff.h>
|
|
#include <linux/wait.h>
|
|
|
|
struct nfp_app;
|
|
struct nfp_net;
|
|
|
|
/* Firmware ABI */
|
|
|
|
enum nfp_ccm_type {
|
|
NFP_CCM_TYPE_BPF_MAP_ALLOC = 1,
|
|
NFP_CCM_TYPE_BPF_MAP_FREE = 2,
|
|
NFP_CCM_TYPE_BPF_MAP_LOOKUP = 3,
|
|
NFP_CCM_TYPE_BPF_MAP_UPDATE = 4,
|
|
NFP_CCM_TYPE_BPF_MAP_DELETE = 5,
|
|
NFP_CCM_TYPE_BPF_MAP_GETNEXT = 6,
|
|
NFP_CCM_TYPE_BPF_MAP_GETFIRST = 7,
|
|
NFP_CCM_TYPE_BPF_BPF_EVENT = 8,
|
|
NFP_CCM_TYPE_CRYPTO_RESET = 9,
|
|
NFP_CCM_TYPE_CRYPTO_ADD = 10,
|
|
NFP_CCM_TYPE_CRYPTO_DEL = 11,
|
|
NFP_CCM_TYPE_CRYPTO_UPDATE = 12,
|
|
__NFP_CCM_TYPE_MAX,
|
|
};
|
|
|
|
#define NFP_CCM_ABI_VERSION 1
|
|
|
|
#define NFP_CCM_TYPE_REPLY_BIT 7
|
|
#define __NFP_CCM_REPLY(req) (BIT(NFP_CCM_TYPE_REPLY_BIT) | (req))
|
|
|
|
struct nfp_ccm_hdr {
|
|
union {
|
|
struct {
|
|
u8 type;
|
|
u8 ver;
|
|
__be16 tag;
|
|
};
|
|
__be32 raw;
|
|
};
|
|
};
|
|
|
|
static inline u8 nfp_ccm_get_type(struct sk_buff *skb)
|
|
{
|
|
struct nfp_ccm_hdr *hdr;
|
|
|
|
hdr = (struct nfp_ccm_hdr *)skb->data;
|
|
|
|
return hdr->type;
|
|
}
|
|
|
|
static inline __be16 __nfp_ccm_get_tag(struct sk_buff *skb)
|
|
{
|
|
struct nfp_ccm_hdr *hdr;
|
|
|
|
hdr = (struct nfp_ccm_hdr *)skb->data;
|
|
|
|
return hdr->tag;
|
|
}
|
|
|
|
static inline unsigned int nfp_ccm_get_tag(struct sk_buff *skb)
|
|
{
|
|
return be16_to_cpu(__nfp_ccm_get_tag(skb));
|
|
}
|
|
|
|
#define NFP_NET_MBOX_TLV_TYPE GENMASK(31, 16)
|
|
#define NFP_NET_MBOX_TLV_LEN GENMASK(15, 0)
|
|
|
|
enum nfp_ccm_mbox_tlv_type {
|
|
NFP_NET_MBOX_TLV_TYPE_UNKNOWN = 0,
|
|
NFP_NET_MBOX_TLV_TYPE_END = 1,
|
|
NFP_NET_MBOX_TLV_TYPE_MSG = 2,
|
|
NFP_NET_MBOX_TLV_TYPE_MSG_NOSUP = 3,
|
|
NFP_NET_MBOX_TLV_TYPE_RESV = 4,
|
|
};
|
|
|
|
/* Implementation */
|
|
|
|
/**
|
|
* struct nfp_ccm - common control message handling
|
|
* @app: APP handle
|
|
*
|
|
* @tag_allocator: bitmap of control message tags in use
|
|
* @tag_alloc_next: next tag bit to allocate
|
|
* @tag_alloc_last: next tag bit to be freed
|
|
*
|
|
* @replies: received cmsg replies waiting to be consumed
|
|
* @wq: work queue for waiting for cmsg replies
|
|
*/
|
|
struct nfp_ccm {
|
|
struct nfp_app *app;
|
|
|
|
DECLARE_BITMAP(tag_allocator, U16_MAX + 1);
|
|
u16 tag_alloc_next;
|
|
u16 tag_alloc_last;
|
|
|
|
struct sk_buff_head replies;
|
|
wait_queue_head_t wq;
|
|
};
|
|
|
|
int nfp_ccm_init(struct nfp_ccm *ccm, struct nfp_app *app);
|
|
void nfp_ccm_clean(struct nfp_ccm *ccm);
|
|
void nfp_ccm_rx(struct nfp_ccm *ccm, struct sk_buff *skb);
|
|
struct sk_buff *
|
|
nfp_ccm_communicate(struct nfp_ccm *ccm, struct sk_buff *skb,
|
|
enum nfp_ccm_type type, unsigned int reply_size);
|
|
|
|
int nfp_ccm_mbox_alloc(struct nfp_net *nn);
|
|
void nfp_ccm_mbox_free(struct nfp_net *nn);
|
|
int nfp_ccm_mbox_init(struct nfp_net *nn);
|
|
void nfp_ccm_mbox_clean(struct nfp_net *nn);
|
|
bool nfp_ccm_mbox_fits(struct nfp_net *nn, unsigned int size);
|
|
struct sk_buff *
|
|
nfp_ccm_mbox_msg_alloc(struct nfp_net *nn, unsigned int req_size,
|
|
unsigned int reply_size, gfp_t flags);
|
|
int __nfp_ccm_mbox_communicate(struct nfp_net *nn, struct sk_buff *skb,
|
|
enum nfp_ccm_type type,
|
|
unsigned int reply_size,
|
|
unsigned int max_reply_size, bool critical);
|
|
int nfp_ccm_mbox_communicate(struct nfp_net *nn, struct sk_buff *skb,
|
|
enum nfp_ccm_type type,
|
|
unsigned int reply_size,
|
|
unsigned int max_reply_size);
|
|
int nfp_ccm_mbox_post(struct nfp_net *nn, struct sk_buff *skb,
|
|
enum nfp_ccm_type type, unsigned int max_reply_size);
|
|
#endif
|