cxgb_tom.h revision 176472 
1
2/**************************************************************************
3
4Copyright (c) 2007, Chelsio Inc.
5All rights reserved.
6
7Redistribution and use in source and binary forms, with or without
8modification, are permitted provided that the following conditions are met:
9
10 1. Redistributions of source code must retain the above copyright notice,
11    this list of conditions and the following disclaimer.
12
13 2. Neither the name of the Chelsio Corporation nor the names of its
14    contributors may be used to endorse or promote products derived from
15    this software without specific prior written permission.
16
17THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
21LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27POSSIBILITY OF SUCH DAMAGE.
28
29
30$FreeBSD: head/sys/dev/cxgb/ulp/tom/cxgb_tom.h 176472 2008-02-23 01:06:17Z kmacy $
31
32***************************************************************************/
33#ifndef CXGB_TOM_H_
34#define CXGB_TOM_H_
35#include <sys/protosw.h>
36
37#define LISTEN_INFO_HASH_SIZE 32
38
39struct listen_info {
40	struct listen_info *next;  /* Link to next entry */
41	struct socket *so;         /* The listening socket */
42	unsigned int stid;         /* The server TID */
43};
44
45
46/*
47 * TOM tunable parameters.  They can be manipulated through sysctl(2) or /proc.
48 */
49struct tom_tunables {
50        int max_host_sndbuf;    // max host RAM consumed by a sndbuf
51        int tx_hold_thres;      // push/pull threshold for non-full TX sk_buffs
52        int max_wrs;            // max # of outstanding WRs per connection
53        int rx_credit_thres;    // min # of RX credits needed for RX_DATA_ACK
54        int cong_alg;           // Congestion control algorithm
55        int mss;                // max TX_DATA WR payload size
56        int delack;             // delayed ACK control
57        int max_conn;           // maximum number of offloaded connections
58        int soft_backlog_limit; // whether the listen backlog limit is soft
59        int ddp;                // whether to put new connections in DDP mode
60        int ddp_thres;          // min recvmsg size before activating DDP
61        int ddp_copy_limit;     // capacity of kernel DDP buffer
62        int ddp_push_wait;      // whether blocking DDP waits for PSH flag
63        int ddp_rcvcoalesce;    // whether receive coalescing is enabled
64        int zcopy_sosend_enabled; // < is never zcopied
65        int zcopy_sosend_partial_thres; // < is never zcopied
66        int zcopy_sosend_partial_copy; // bytes copied in partial zcopy
67        int zcopy_sosend_thres;// >= are mostly zcopied
68        int zcopy_sosend_copy; // bytes coped in zcopied
69        int zcopy_sosend_ret_pending_dma;// pot. return while pending DMA
70        int activated;          // TOE engine activation state
71};
72
73struct tom_data {
74        TAILQ_ENTRY(tom_data) entry;
75
76        struct t3cdev *cdev;
77        struct pci_dev *pdev;
78        struct toedev tdev;
79
80        struct cxgb_client *client;
81        struct tom_tunables conf;
82        struct tom_sysctl_table *sysctl;
83
84        /*
85         * The next three locks listen_lock, deferq.lock, and tid_release_lock
86         * are used rarely so we let them potentially share a cacheline.
87         */
88
89        struct listen_info *listen_hash_tab[LISTEN_INFO_HASH_SIZE];
90        struct mtx listen_lock;
91
92        struct mbuf_head deferq;
93        struct task deferq_task;
94
95        struct socket **tid_release_list;
96        struct mtx tid_release_lock;
97        struct task tid_release_task;
98
99        volatile int tx_dma_pending;
100
101        unsigned int ddp_llimit;
102        unsigned int ddp_ulimit;
103
104        unsigned int rx_page_size;
105
106        u8 *ppod_map;
107        unsigned int nppods;
108        struct mtx ppod_map_lock;
109
110        struct adap_ports *ports;
111	struct taskqueue *tq;
112};
113
114
115struct listen_ctx {
116	struct socket *lso;
117	struct tom_data *tom_data;
118	int ulp_mode;
119	LIST_HEAD(, toepcb) synq_head;
120
121};
122
123#define TOM_DATA(dev) (*(struct tom_data **)&(dev)->tod_l4opt)
124#define T3C_DEV(sk) ((TOM_DATA(TOE_DEV(sk)))->cdev)
125#define TOEP_T3C_DEV(toep) (TOM_DATA(toep->tp_toedev)->cdev)
126#define TOM_TUNABLE(dev, param) (TOM_DATA(dev)->conf.param)
127
128#define TP_DATASENT         	(1 << 0)
129#define TP_TX_WAIT_IDLE      	(1 << 1)
130#define TP_FIN_SENT          	(1 << 2)
131#define TP_ABORT_RPL_PENDING 	(1 << 3)
132#define TP_ABORT_SHUTDOWN    	(1 << 4)
133#define TP_ABORT_RPL_RCVD    	(1 << 5)
134#define TP_ABORT_REQ_RCVD    	(1 << 6)
135#define TP_CLOSE_CON_REQUESTED	(1 << 7)
136#define TP_SYN_RCVD		(1 << 8)
137#define TP_ESTABLISHED		(1 << 9)
138
139void t3_init_tunables(struct tom_data *t);
140
141void t3_sysctl_register(struct adapter *sc, const struct tom_tunables *p);
142
143static __inline struct mbuf *
144m_gethdr_nofail(int len)
145{
146	struct mbuf *m;
147
148	m = m_gethdr(M_NOWAIT, MT_DATA);
149	if (m == NULL) {
150		panic("implement lowmem cache\n");
151	}
152
153	KASSERT(len < MHLEN, ("requested header size too large for mbuf"));
154	m->m_pkthdr.len = m->m_len = len;
155	return (m);
156}
157
158
159#endif
160