| /* |
| * This file and its contents are supplied under the terms of the |
| * Common Development and Distribution License ("CDDL"), version 1.0. |
| * You may only use this file in accordance with the terms of version |
| * 1.0 of the CDDL. |
| * |
| * A full copy of the text of the CDDL should have accompanied this |
| * source. A copy of the CDDL is also available via the Internet at |
| * http://www.illumos.org/license/CDDL. |
| */ |
| |
| /* |
| * This file is part of the Chelsio T4 support code. |
| * |
| * Copyright (C) 2010-2013 Chelsio Communications. All rights reserved. |
| * |
| * 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 LICENSE file included in this |
| * release for licensing terms and conditions. |
| */ |
| |
| #ifndef __CXGBE_T4L2T_H |
| #define __CXGBE_T4L2T_H |
| |
| #include <inet/ip.h> |
| #include <inet/ip2mac.h> |
| |
| enum { L2T_SIZE = 4096 }; /* # of L2T entries */ |
| |
| #define MBUF_EQ(mp) (*((void **)(&(mp)->b_datap->db_cksumstuff))) |
| |
| /* |
| * Each L2T entry plays multiple roles. First of all, it keeps state for the |
| * corresponding entry of the HW L2 table and maintains a queue of offload |
| * packets awaiting address resolution. Second, it is a node of a hash table |
| * chain, where the nodes of the chain are linked together through their next |
| * pointer. Finally, each node is a bucket of a hash table, pointing to the |
| * first element in its chain through its first pointer. |
| */ |
| struct l2t_entry { |
| uint16_t state; /* entry state */ |
| uint16_t idx; /* entry index */ |
| uint32_t addr[4]; /* next hop IP or IPv6 address */ |
| in_addr_t in_addr; |
| struct adapter *sc; /* associated adapter */ |
| uint16_t smt_idx; /* SMT index */ |
| uint16_t vlan; /* VLAN TCI (id: 0-11, prio: 13-15) */ |
| int ifindex; /* interface index */ |
| struct l2t_entry *first; /* start of hash chain */ |
| struct l2t_entry *next; /* next l2t_entry on chain */ |
| mblk_t *arpq_head; /* list of mblks awaiting resolution */ |
| mblk_t *arpq_tail; |
| kmutex_t lock; |
| volatile uint_t refcnt; /* entry reference count */ |
| uint16_t hash; /* hash bucket the entry is on */ |
| uint8_t v6; /* whether entry is for IPv6 */ |
| uint8_t lport; /* associated offload logical port */ |
| uint8_t dmac[ETHERADDRL]; /* next hop's MAC address */ |
| }; |
| |
| int t4_free_l2t(struct l2t_data *d); |
| void t4_l2t_release(struct l2t_entry *e); |
| int do_l2t_write_rpl(struct sge_iq *iq, const struct rss_header *rss, |
| mblk_t *m); |
| |
| #ifdef TCP_OFFLOAD_ENABLE |
| struct l2t_entry *t4_l2t_get(struct port_info *pi, conn_t *connp); |
| int t4_l2t_send(struct adapter *sc, mblk_t *m, struct l2t_entry *e); |
| void t4_l2t_update(ip2mac_t *ip2macp, void* arg); |
| #endif |
| |
| #endif /* __CXGBE_T4L2T_H */ |