cxgb_toedev.h revision 1.1.6.2
1 1.1.6.2 yamt 2 1.1.6.2 yamt /************************************************************************** 3 1.1.6.2 yamt 4 1.1.6.2 yamt Copyright (c) 2007, Chelsio Inc. 5 1.1.6.2 yamt All rights reserved. 6 1.1.6.2 yamt 7 1.1.6.2 yamt Redistribution and use in source and binary forms, with or without 8 1.1.6.2 yamt modification, are permitted provided that the following conditions are met: 9 1.1.6.2 yamt 10 1.1.6.2 yamt 1. Redistributions of source code must retain the above copyright notice, 11 1.1.6.2 yamt this list of conditions and the following disclaimer. 12 1.1.6.2 yamt 13 1.1.6.2 yamt 2. Neither the name of the Chelsio Corporation nor the names of its 14 1.1.6.2 yamt contributors may be used to endorse or promote products derived from 15 1.1.6.2 yamt this software without specific prior written permission. 16 1.1.6.2 yamt 17 1.1.6.2 yamt THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 18 1.1.6.2 yamt AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 1.1.6.2 yamt IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 1.1.6.2 yamt ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 21 1.1.6.2 yamt LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 1.1.6.2 yamt CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 1.1.6.2 yamt SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 1.1.6.2 yamt INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25 1.1.6.2 yamt CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 1.1.6.2 yamt ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 1.1.6.2 yamt POSSIBILITY OF SUCH DAMAGE. 28 1.1.6.2 yamt 29 1.1.6.2 yamt ***************************************************************************/ 30 1.1.6.2 yamt 31 1.1.6.2 yamt #ifndef _OFFLOAD_DEV_H_ 32 1.1.6.2 yamt #define _OFFLOAD_DEV_H_ 33 1.1.6.2 yamt 34 1.1.6.2 yamt #include <net/route.h> 35 1.1.6.2 yamt 36 1.1.6.2 yamt /* Parameter values for offload_get_phys_egress() */ 37 1.1.6.2 yamt enum { 38 1.1.6.2 yamt TOE_OPEN, 39 1.1.6.2 yamt TOE_FAILOVER, 40 1.1.6.2 yamt }; 41 1.1.6.2 yamt 42 1.1.6.2 yamt /* Parameter values for toe_failover() */ 43 1.1.6.2 yamt enum { 44 1.1.6.2 yamt TOE_ACTIVE_SLAVE, 45 1.1.6.2 yamt TOE_LINK_DOWN, 46 1.1.6.2 yamt TOE_LINK_UP, 47 1.1.6.2 yamt TOE_RELEASE, 48 1.1.6.2 yamt TOE_RELEASE_ALL, 49 1.1.6.2 yamt }; 50 1.1.6.2 yamt 51 1.1.6.2 yamt 52 1.1.6.2 yamt #define TOENAMSIZ 16 53 1.1.6.2 yamt 54 1.1.6.2 yamt /* belongs in linux/netdevice.h */ 55 1.1.6.2 yamt #define NETIF_F_TCPIP_OFFLOAD (1 << 15) 56 1.1.6.2 yamt 57 1.1.6.2 yamt /* Get the toedev associated with a ifnet */ 58 1.1.6.2 yamt #define TOEDEV(netdev) (*(struct toedev **)&(netdev)->if_softc) 59 1.1.6.2 yamt 60 1.1.6.2 yamt /* offload type ids */ 61 1.1.6.2 yamt enum { 62 1.1.6.2 yamt TOE_ID_CHELSIO_T1 = 1, 63 1.1.6.2 yamt TOE_ID_CHELSIO_T1C, 64 1.1.6.2 yamt TOE_ID_CHELSIO_T2, 65 1.1.6.2 yamt TOE_ID_CHELSIO_T3, 66 1.1.6.2 yamt TOE_ID_CHELSIO_T3B, 67 1.1.6.2 yamt }; 68 1.1.6.2 yamt 69 1.1.6.2 yamt struct offload_id { 70 1.1.6.2 yamt unsigned int id; 71 1.1.6.2 yamt unsigned long data; 72 1.1.6.2 yamt }; 73 1.1.6.2 yamt 74 1.1.6.2 yamt struct ifnet; 75 1.1.6.2 yamt struct rt_entry; 76 1.1.6.2 yamt struct tom_info; 77 1.1.6.2 yamt struct sysctl_oid; 78 1.1.6.2 yamt struct socket; 79 1.1.6.2 yamt struct mbuf; 80 1.1.6.2 yamt 81 1.1.6.2 yamt enum toetype { 82 1.1.6.2 yamt T3A = 0, 83 1.1.6.2 yamt T3B 84 1.1.6.2 yamt }; 85 1.1.6.2 yamt 86 1.1.6.2 yamt struct toedev { 87 1.1.6.2 yamt char name[TOENAMSIZ]; /* TOE device name */ 88 1.1.6.2 yamt enum toetype type; 89 1.1.6.2 yamt struct adapter *adapter; 90 1.1.6.2 yamt unsigned int ttid; /* TOE type id */ 91 1.1.6.2 yamt unsigned long flags; /* device flags */ 92 1.1.6.2 yamt unsigned int mtu; /* max size of TX offloaded data */ 93 1.1.6.2 yamt unsigned int nconn; /* max # of offloaded connections */ 94 1.1.6.2 yamt struct ifnet *lldev; /* LL device associated with TOE messages */ 95 1.1.6.2 yamt const struct tom_info *offload_mod; /* attached TCP offload module */ 96 1.1.6.2 yamt struct sysctl_oid *sysctl_root; /* root of proc dir for this TOE */ 97 1.1.6.2 yamt TAILQ_ENTRY(toedev) ofld_entry; /* for list linking */ 98 1.1.6.2 yamt int (*open)(struct toedev *dev); 99 1.1.6.2 yamt int (*close)(struct toedev *dev); 100 1.1.6.2 yamt int (*can_offload)(struct toedev *dev, struct socket *so); 101 1.1.6.2 yamt int (*connect)(struct toedev *dev, struct socket *so, 102 1.1.6.2 yamt struct ifnet *egress_ifp); 103 1.1.6.2 yamt int (*send)(struct toedev *dev, struct mbuf *m); 104 1.1.6.2 yamt int (*recv)(struct toedev *dev, struct mbuf **m, int n); 105 1.1.6.2 yamt int (*ctl)(struct toedev *dev, unsigned int req, void *data); 106 1.1.6.2 yamt void (*neigh_update)(struct toedev *dev, struct rtentry *neigh); 107 1.1.6.2 yamt void (*failover)(struct toedev *dev, struct ifnet *bond_ifp, 108 1.1.6.2 yamt struct ifnet *ndev, int event); 109 1.1.6.2 yamt void *priv; /* driver private data */ 110 1.1.6.2 yamt void *l2opt; /* optional layer 2 data */ 111 1.1.6.2 yamt void *l3opt; /* optional layer 3 data */ 112 1.1.6.2 yamt void *l4opt; /* optional layer 4 data */ 113 1.1.6.2 yamt void *ulp; /* ulp stuff */ 114 1.1.6.2 yamt }; 115 1.1.6.2 yamt 116 1.1.6.2 yamt struct tom_info { 117 1.1.6.2 yamt int (*attach)(struct toedev *dev, const struct offload_id *entry); 118 1.1.6.2 yamt int (*detach)(struct toedev *dev); 119 1.1.6.2 yamt const char *name; 120 1.1.6.2 yamt const struct offload_id *id_table; 121 1.1.6.2 yamt TAILQ_ENTRY(tom_info) entry; 122 1.1.6.2 yamt }; 123 1.1.6.2 yamt 124 1.1.6.2 yamt static inline void init_offload_dev(struct toedev *dev) 125 1.1.6.2 yamt { 126 1.1.6.2 yamt 127 1.1.6.2 yamt } 128 1.1.6.2 yamt 129 1.1.6.2 yamt extern int register_tom(struct tom_info *t); 130 1.1.6.2 yamt extern int unregister_tom(struct tom_info *t); 131 1.1.6.2 yamt extern int register_toedev(struct toedev *dev, const char *name); 132 1.1.6.2 yamt extern int unregister_toedev(struct toedev *dev); 133 1.1.6.2 yamt extern int activate_offload(struct toedev *dev); 134 1.1.6.2 yamt extern int toe_send(struct toedev *dev, struct mbuf *m); 135 1.1.6.2 yamt extern struct ifnet *offload_get_phys_egress(struct ifnet *dev, 136 1.1.6.2 yamt struct socket *so, 137 1.1.6.2 yamt int context); 138 1.1.6.2 yamt 139 1.1.6.2 yamt #if defined(CONFIG_TCP_OFFLOAD_MODULE) 140 1.1.6.2 yamt static inline int toe_receive_mbuf(struct toedev *dev, struct mbuf **m, 141 1.1.6.2 yamt int n) 142 1.1.6.2 yamt { 143 1.1.6.2 yamt return dev->recv(dev, m, n); 144 1.1.6.2 yamt } 145 1.1.6.2 yamt 146 1.1.6.2 yamt extern int prepare_tcp_for_offload(void); 147 1.1.6.2 yamt extern void restore_tcp_to_nonoffload(void); 148 1.1.6.2 yamt #elif defined(CONFIG_TCP_OFFLOAD) 149 1.1.6.2 yamt extern int toe_receive_mbuf(struct toedev *dev, struct mbuf **m, int n); 150 1.1.6.2 yamt #endif 151 1.1.6.2 yamt 152 1.1.6.2 yamt #if defined(CONFIG_TCP_OFFLOAD) || \ 153 1.1.6.2 yamt (defined(CONFIG_TCP_OFFLOAD_MODULE) && defined(MODULE)) 154 1.1.6.2 yamt extern void toe_neigh_update(struct rtentry *neigh); 155 1.1.6.2 yamt extern void toe_failover(struct ifnet *bond_ifp, 156 1.1.6.2 yamt struct ifnet *fail_ifp, int event); 157 1.1.6.2 yamt extern int toe_enslave(struct ifnet *bond_ifp, 158 1.1.6.2 yamt struct ifnet *slave_ifp); 159 1.1.6.2 yamt #else 160 1.1.6.2 yamt static inline void toe_neigh_update(struct ifnet *neigh) {} 161 1.1.6.2 yamt static inline void toe_failover(struct ifnet *bond_ifp, 162 1.1.6.2 yamt struct ifnet *fail_ifp, int event) 163 1.1.6.2 yamt {} 164 1.1.6.2 yamt static inline int toe_enslave(struct ifnet *bond_ifp, 165 1.1.6.2 yamt struct ifnet *slave_ifp) 166 1.1.6.2 yamt { 167 1.1.6.2 yamt return 0; 168 1.1.6.2 yamt } 169 1.1.6.2 yamt #endif /* CONFIG_TCP_OFFLOAD */ 170 1.1.6.2 yamt 171 1.1.6.2 yamt #endif /* _OFFLOAD_DEV_H_ */ 172
Indexes created Thu Oct 23 22:10:10 GMT 2025