/* * iSCSI over TCP/IP Data-Path lib * * Copyright (C) 2008 Mike Christie * Copyright (C) 2008 Red Hat, Inc. All rights reserved. * maintained by open-iscsi@googlegroups.com * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published * by the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that 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. * * See the file COPYING included with this distribution for more details. */ #ifndef LIBISCSI_TCP_H #define LIBISCSI_TCP_H #include struct iscsi_tcp_conn; struct iscsi_segment; struct sk_buff; struct ahash_request; typedef int iscsi_segment_done_fn_t(struct iscsi_tcp_conn *, struct iscsi_segment *); struct iscsi_segment { unsigned char *data; unsigned int size; unsigned int copied; unsigned int total_size; unsigned int total_copied; struct ahash_request *hash; unsigned char padbuf[ISCSI_PAD_LEN]; unsigned char recv_digest[ISCSI_DIGEST_SIZE]; unsigned char digest[ISCSI_DIGEST_SIZE]; unsigned int digest_len; struct scatterlist *sg; void *sg_mapped; unsigned int sg_offset; bool atomic_mapped; iscsi_segment_done_fn_t *done; }; /* Socket connection receive helper */ struct iscsi_tcp_recv { struct iscsi_hdr *hdr; struct iscsi_segment segment; /* Allocate buffer for BHS + AHS */ uint32_t hdr_buf[64]; /* copied and flipped values */ int datalen; }; struct iscsi_tcp_conn { struct iscsi_conn *iscsi_conn; void *dd_data; int stop_stage; /* conn_stop() flag: * * stop to recover, * * stop to terminate */ /* control data */ struct iscsi_tcp_recv in; /* TCP receive context */ /* CRC32C (Rx) LLD should set this is they do not offload */ struct ahash_request *rx_hash; }; struct iscsi_tcp_task { uint32_t exp_datasn; /* expected target's R2TSN/DataSN */ int data_offset; struct iscsi_r2t_info *r2t; /* in progress solict R2T */ struct iscsi_pool r2tpool; struct kfifo r2tqueue; void *dd_data; spinlock_t pool2queue; spinlock_t queue2pool; }; enum { ISCSI_TCP_SEGMENT_DONE, /* curr seg has been processed */ ISCSI_TCP_SKB_DONE, /* skb is out of data */ ISCSI_TCP_CONN_ERR, /* iscsi layer has fired a conn err */ ISCSI_TCP_SUSPENDED, /* conn is suspended */ }; extern void iscsi_tcp_hdr_recv_prep(struct iscsi_tcp_conn *tcp_conn); extern int iscsi_tcp_recv_skb(struct iscsi_conn *conn, struct sk_buff *skb, unsigned int offset, bool offloaded, int *status); extern void iscsi_tcp_cleanup_task(struct iscsi_task *task); extern int iscsi_tcp_task_init(struct iscsi_task *task); extern int iscsi_tcp_task_xmit(struct iscsi_task *task); /* segment helpers */ extern int iscsi_tcp_recv_segment_is_hdr(struct iscsi_tcp_conn *tcp_conn); extern int iscsi_tcp_segment_done(struct iscsi_tcp_conn *tcp_conn, struct iscsi_segment *segment, int recv, unsigned copied); extern void iscsi_tcp_segment_unmap(struct iscsi_segment *segment); extern void iscsi_segment_init_linear(struct iscsi_segment *segment, void *data, size_t size, iscsi_segment_done_fn_t *done, struct ahash_request *hash); extern int iscsi_segment_seek_sg(struct iscsi_segment *segment, struct scatterlist *sg_list, unsigned int sg_count, unsigned int offset, size_t size, iscsi_segment_done_fn_t *done, struct ahash_request *hash); /* digest helpers */ extern void iscsi_tcp_dgst_header(struct ahash_request *hash, const void *hdr, size_t hdrlen, unsigned char digest[ISCSI_DIGEST_SIZE]); extern struct iscsi_cls_conn * iscsi_tcp_conn_setup(struct iscsi_cls_session *cls_session, int dd_data_size, uint32_t conn_idx); extern void iscsi_tcp_conn_teardown(struct iscsi_cls_conn *cls_conn); /* misc helpers */ extern int iscsi_tcp_r2tpool_alloc(struct iscsi_session *session); extern void iscsi_tcp_r2tpool_free(struct iscsi_session *session); extern int iscsi_tcp_set_max_r2t(struct iscsi_conn *conn, char *buf); extern void iscsi_tcp_conn_get_stats(struct iscsi_cls_conn *cls_conn, struct iscsi_stats *stats); #endif /* LIBISCSI_TCP_H */ e='0' selected='selected'>includemode:
authorVincent <vincent.stehle@laposte.net>2017-01-30 15:06:43 +0100
committerDavid S. Miller <davem@davemloft.net>2017-01-31 13:07:40 -0500
commitc73e44269369e936165f0f9b61f1f09a11dae01c (patch)
treee2188e900ba06302f8ed2746cb07edd3efbc5c35 /include/net/strparser.h
parent040587af31228d82c52267f717c9fcdb65f36335 (diff)
net: thunderx: avoid dereferencing xcv when NULL
This fixes the following smatch and coccinelle warnings: drivers/net/ethernet/cavium/thunder/thunder_xcv.c:119 xcv_setup_link() error: we previously assumed 'xcv' could be null (see line 118) [smatch] drivers/net/ethernet/cavium/thunder/thunder_xcv.c:119:16-20: ERROR: xcv is NULL but dereferenced. [coccinelle] Fixes: 6465859aba1e66a5 ("net: thunderx: Add RGMII interface type support") Signed-off-by: Vincent Stehlé <vincent.stehle@laposte.net> Cc: Sunil Goutham <sgoutham@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/strparser.h')