mctp.h (8069b22d656f6e1922352bff90ab78e6fab73779) mctp.h (63ed1aab3d40aa61aaa66819bdce9377ac7f40fa)
1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Management Component Transport Protocol (MCTP)
4 *
5 * Copyright (c) 2021 Code Construct
6 * Copyright (c) 2021 Google
7 */
8

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121 * the (complete) reply, or during reassembly errors. Here, we clean up
122 * the reassembly context (marking reasm_dead, to prevent another from
123 * starting), and remove the socket from the netns & socket lists.
124 *
125 * - through an expiry timeout, on a per-socket timer
126 */
127struct mctp_sk_key {
128 mctp_eid_t peer_addr;
1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Management Component Transport Protocol (MCTP)
4 *
5 * Copyright (c) 2021 Code Construct
6 * Copyright (c) 2021 Google
7 */
8

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121 * the (complete) reply, or during reassembly errors. Here, we clean up
122 * the reassembly context (marking reasm_dead, to prevent another from
123 * starting), and remove the socket from the netns & socket lists.
124 *
125 * - through an expiry timeout, on a per-socket timer
126 */
127struct mctp_sk_key {
128 mctp_eid_t peer_addr;
129 mctp_eid_t local_addr;
129 mctp_eid_t local_addr; /* MCTP_ADDR_ANY for local owned tags */
130 __u8 tag; /* incoming tag match; invert TO for local */
131
132 /* we hold a ref to sk when set */
133 struct sock *sk;
134
135 /* routing lookup list */
136 struct hlist_node hlist;
137

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158 /* expiry timeout; valid (above) cleared on expiry */
159 unsigned long expiry;
160
161 /* free to use for device flow state tracking. Initialised to
162 * zero on initial key creation
163 */
164 unsigned long dev_flow_state;
165 struct mctp_dev *dev;
130 __u8 tag; /* incoming tag match; invert TO for local */
131
132 /* we hold a ref to sk when set */
133 struct sock *sk;
134
135 /* routing lookup list */
136 struct hlist_node hlist;
137

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158 /* expiry timeout; valid (above) cleared on expiry */
159 unsigned long expiry;
160
161 /* free to use for device flow state tracking. Initialised to
162 * zero on initial key creation
163 */
164 unsigned long dev_flow_state;
165 struct mctp_dev *dev;
166
167 /* a tag allocated with SIOCMCTPALLOCTAG ioctl will not expire
168 * automatically on timeout or response, instead SIOCMCTPDROPTAG
169 * is used.
170 */
171 bool manual_alloc;
166};
167
168struct mctp_skb_cb {
169 unsigned int magic;
170 unsigned int net;
171 int ifindex; /* extended/direct addressing if set */
172 mctp_eid_t src;
173 unsigned char halen;

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234/* route interfaces */
235struct mctp_route *mctp_route_lookup(struct net *net, unsigned int dnet,
236 mctp_eid_t daddr);
237
238int mctp_local_output(struct sock *sk, struct mctp_route *rt,
239 struct sk_buff *skb, mctp_eid_t daddr, u8 req_tag);
240
241void mctp_key_unref(struct mctp_sk_key *key);
172};
173
174struct mctp_skb_cb {
175 unsigned int magic;
176 unsigned int net;
177 int ifindex; /* extended/direct addressing if set */
178 mctp_eid_t src;
179 unsigned char halen;

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240/* route interfaces */
241struct mctp_route *mctp_route_lookup(struct net *net, unsigned int dnet,
242 mctp_eid_t daddr);
243
244int mctp_local_output(struct sock *sk, struct mctp_route *rt,
245 struct sk_buff *skb, mctp_eid_t daddr, u8 req_tag);
246
247void mctp_key_unref(struct mctp_sk_key *key);
248struct mctp_sk_key *mctp_alloc_local_tag(struct mctp_sock *msk,
249 mctp_eid_t daddr, mctp_eid_t saddr,
250 bool manual, u8 *tagp);
242
243/* routing <--> device interface */
244unsigned int mctp_default_net(struct net *net);
245int mctp_default_net_set(struct net *net, unsigned int index);
246int mctp_route_add_local(struct mctp_dev *mdev, mctp_eid_t addr);
247int mctp_route_remove_local(struct mctp_dev *mdev, mctp_eid_t addr);
248void mctp_route_remove_dev(struct mctp_dev *mdev);
249

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252/* routing <--> device interface */
253unsigned int mctp_default_net(struct net *net);
254int mctp_default_net_set(struct net *net, unsigned int index);
255int mctp_route_add_local(struct mctp_dev *mdev, mctp_eid_t addr);
256int mctp_route_remove_local(struct mctp_dev *mdev, mctp_eid_t addr);
257void mctp_route_remove_dev(struct mctp_dev *mdev);
258

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