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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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c85c2951d4
Do proper handling of dev_queue_xmit errors in order to avoid double free of skb and leaks in error conditions. In cfctrl pending requests are removed when CAIF Link layer goes down. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
131 lines
3.5 KiB
C
131 lines
3.5 KiB
C
/*
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* Copyright (C) ST-Ericsson AB 2010
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* Author: Sjur Brendeland/sjur.brandeland@stericsson.com
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* License terms: GNU General Public License (GPL) version 2
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*/
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#ifndef CFCTRL_H_
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#define CFCTRL_H_
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#include <net/caif/caif_layer.h>
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#include <net/caif/cfsrvl.h>
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/* CAIF Control packet commands */
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enum cfctrl_cmd {
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CFCTRL_CMD_LINK_SETUP = 0,
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CFCTRL_CMD_LINK_DESTROY = 1,
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CFCTRL_CMD_LINK_ERR = 2,
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CFCTRL_CMD_ENUM = 3,
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CFCTRL_CMD_SLEEP = 4,
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CFCTRL_CMD_WAKE = 5,
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CFCTRL_CMD_LINK_RECONF = 6,
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CFCTRL_CMD_START_REASON = 7,
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CFCTRL_CMD_RADIO_SET = 8,
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CFCTRL_CMD_MODEM_SET = 9,
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CFCTRL_CMD_MASK = 0xf
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};
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/* Channel types */
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enum cfctrl_srv {
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CFCTRL_SRV_DECM = 0,
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CFCTRL_SRV_VEI = 1,
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CFCTRL_SRV_VIDEO = 2,
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CFCTRL_SRV_DBG = 3,
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CFCTRL_SRV_DATAGRAM = 4,
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CFCTRL_SRV_RFM = 5,
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CFCTRL_SRV_UTIL = 6,
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CFCTRL_SRV_MASK = 0xf
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};
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#define CFCTRL_RSP_BIT 0x20
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#define CFCTRL_ERR_BIT 0x10
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struct cfctrl_rsp {
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void (*linksetup_rsp)(struct cflayer *layer, u8 linkid,
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enum cfctrl_srv serv, u8 phyid,
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struct cflayer *adapt_layer);
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void (*linkdestroy_rsp)(struct cflayer *layer, u8 linkid);
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void (*linkerror_ind)(void);
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void (*enum_rsp)(void);
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void (*sleep_rsp)(void);
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void (*wake_rsp)(void);
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void (*restart_rsp)(void);
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void (*radioset_rsp)(void);
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void (*reject_rsp)(struct cflayer *layer, u8 linkid,
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struct cflayer *client_layer);
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};
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/* Link Setup Parameters for CAIF-Links. */
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struct cfctrl_link_param {
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enum cfctrl_srv linktype;/* (T3,T0) Type of Channel */
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u8 priority; /* (P4,P0) Priority of the channel */
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u8 phyid; /* (U2-U0) Physical interface to connect */
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u8 endpoint; /* (E1,E0) Endpoint for data channels */
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u8 chtype; /* (H1,H0) Channel-Type, applies to
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* VEI, DEBUG */
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union {
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struct {
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u8 connid; /* (D7,D0) Video LinkId */
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} video;
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struct {
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u32 connid; /* (N31,Ngit0) Connection ID used
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* for Datagram */
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} datagram;
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struct {
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u32 connid; /* Connection ID used for RFM */
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char volume[20]; /* Volume to mount for RFM */
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} rfm; /* Configuration for RFM */
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struct {
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u16 fifosize_kb; /* Psock FIFO size in KB */
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u16 fifosize_bufs; /* Psock # signal buffers */
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char name[16]; /* Name of the PSOCK service */
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u8 params[255]; /* Link setup Parameters> */
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u16 paramlen; /* Length of Link Setup
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* Parameters */
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} utility; /* Configuration for Utility Links (Psock) */
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} u;
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};
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/* This structure is used internally in CFCTRL */
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struct cfctrl_request_info {
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int sequence_no;
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enum cfctrl_cmd cmd;
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u8 channel_id;
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struct cfctrl_link_param param;
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struct cflayer *client_layer;
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struct list_head list;
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};
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struct cfctrl {
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struct cfsrvl serv;
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struct cfctrl_rsp res;
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atomic_t req_seq_no;
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atomic_t rsp_seq_no;
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struct list_head list;
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/* Protects from simultaneous access to first_req list */
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spinlock_t info_list_lock;
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#ifndef CAIF_NO_LOOP
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u8 loop_linkid;
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int loop_linkused[256];
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/* Protects simultaneous access to loop_linkid and loop_linkused */
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spinlock_t loop_linkid_lock;
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#endif
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};
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void cfctrl_enum_req(struct cflayer *cfctrl, u8 physlinkid);
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int cfctrl_linkup_request(struct cflayer *cfctrl,
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struct cfctrl_link_param *param,
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struct cflayer *user_layer);
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int cfctrl_linkdown_req(struct cflayer *cfctrl, u8 linkid,
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struct cflayer *client);
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struct cflayer *cfctrl_create(void);
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struct cfctrl_rsp *cfctrl_get_respfuncs(struct cflayer *layer);
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int cfctrl_cancel_req(struct cflayer *layr, struct cflayer *adap_layer);
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void cfctrl_remove(struct cflayer *layr);
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#endif /* CFCTRL_H_ */
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