#ifndef _RDS_TCP_H #define _RDS_TCP_H #define RDS_TCP_PORT 16385 struct rds_tcp_incoming { struct rds_incoming ti_inc; struct sk_buff_head ti_skb_list; }; struct rds_tcp_connection { struct list_head t_tcp_node; struct rds_conn_path *t_cpath; /* t_conn_path_lock synchronizes the connection establishment between * rds_tcp_accept_one and rds_tcp_conn_path_connect */ struct mutex t_conn_path_lock; struct socket *t_sock; void *t_orig_write_space; void *t_orig_data_ready; void *t_orig_state_change; struct rds_tcp_incoming *t_tinc; size_t t_tinc_hdr_rem; size_t t_tinc_data_rem; /* XXX error report? */ struct work_struct t_conn_w; struct work_struct t_send_w; struct work_struct t_down_w; struct work_struct t_recv_w; /* for info exporting only */ struct list_head t_list_item; u32 t_last_sent_nxt; u32 t_last_expected_una; u32 t_last_seen_una; }; struct rds_tcp_statistics { uint64_t s_tcp_data_ready_calls; uint64_t s_tcp_write_space_calls; uint64_t s_tcp_sndbuf_full; uint64_t s_tcp_connect_raced; uint64_t s_tcp_listen_closed_stale; }; /* tcp.c */ void rds_tcp_tune(struct socket *sock); void rds_tcp_nonagle(struct socket *sock); void rds_tcp_set_callbacks(struct socket *sock, struct rds_conn_path *cp); void rds_tcp_reset_callbacks(struct socket *sock, struct rds_conn_path *cp); void rds_tcp_restore_callbacks(struct socket *sock, struct rds_tcp_connection *tc); u32 rds_tcp_snd_nxt(struct rds_tcp_connection *tc); u32 rds_tcp_snd_una(struct rds_tcp_connection *tc); u64 rds_tcp_map_seq(struct rds_tcp_connection *tc, u32 seq); extern struct rds_transport rds_tcp_transport; void rds_tcp_accept_work(struct sock *sk); /* tcp_connect.c */ int rds_tcp_conn_path_connect(struct rds_conn_path *cp); void rds_tcp_conn_path_shutdown(struct rds_conn_path *conn); void rds_tcp_state_change(struct sock *sk); /* tcp_listen.c */ struct socket *rds_tcp_listen_init(struct net *); void rds_tcp_listen_stop(struct socket *); void rds_tcp_listen_data_ready(struct sock *sk); int rds_tcp_accept_one(struct socket *sock); int rds_tcp_keepalive(struct socket *sock); void *rds_tcp_listen_sock_def_readable(struct net *net); /* tcp_recv.c */ int rds_tcp_recv_init(void); void rds_tcp_recv_exit(void); void rds_tcp_data_ready(struct sock *sk); int rds_tcp_recv_path(struct rds_conn_path *cp); void rds_tcp_inc_free(struct rds_incoming *inc); int rds_tcp_inc_copy_to_user(struct rds_incoming *inc, struct iov_iter *to); /* tcp_send.c */ void rds_tcp_xmit_path_prepare(struct rds_conn_path *cp); void rds_tcp_xmit_path_complete(struct rds_conn_path *cp); int rds_tcp_xmit(struct rds_connection *conn, struct rds_message *rm, unsigned int hdr_off, unsigned int sg, unsigned int off); void rds_tcp_write_space(struct sock *sk); /* tcp_stats.c */ DECLARE_PER_CPU(struct rds_tcp_statistics, rds_tcp_stats); #define rds_tcp_stats_inc(member) rds_stats_inc_which(rds_tcp_stats, member) unsigned int rds_tcp_stats_info_copy(struct rds_info_iterator *iter, unsigned int avail); #endif 6963dd2f'>hci/hci.h
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authorSriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>2017-01-09 16:00:44 +0530
committerJ. Bruce Fields <bfields@redhat.com>2017-01-12 16:14:47 -0500
commitce1ca7d2d140a1f4aaffd297ac487f246963dd2f (patch)
tree5aeab5e0cb6ef404c894a18251588278b9432a2c /net/nfc/hci/hci.h
parent546125d1614264d26080817d0c8cddb9b25081fa (diff)
svcrdma: avoid duplicate dma unmapping during error recovery
In rdma_read_chunk_frmr() when ib_post_send() fails, the error code path invokes ib_dma_unmap_sg() to unmap the sg list. It then invokes svc_rdma_put_frmr() which in turn tries to unmap the same sg list through ib_dma_unmap_sg() again. This second unmap is invalid and could lead to problems when the iova being unmapped is subsequently reused. Remove the call to unmap in rdma_read_chunk_frmr() and let svc_rdma_put_frmr() handle it. Fixes: 412a15c0fe53 ("svcrdma: Port to new memory registration API") Cc: stable@vger.kernel.org Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com> Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'net/nfc/hci/hci.h')