156 lines
4.5 KiB
C
156 lines
4.5 KiB
C
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/*
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* Copyright (c) 2016 Chelsio Communications, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef __LIBCXGB_CM_H__
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#define __LIBCXGB_CM_H__
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#include <net/tcp.h>
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#include <cxgb4.h>
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#include <t4_msg.h>
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#include <l2t.h>
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void
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cxgb_get_4tuple(struct cpl_pass_accept_req *, enum chip_type,
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int *, __u8 *, __u8 *, __be16 *, __be16 *);
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struct dst_entry *
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cxgb_find_route(struct cxgb4_lld_info *,
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struct net_device *(*)(struct net_device *),
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__be32, __be32, __be16, __be16, u8);
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struct dst_entry *
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cxgb_find_route6(struct cxgb4_lld_info *,
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struct net_device *(*)(struct net_device *),
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__u8 *, __u8 *, __be16, __be16, u8, __u32);
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/* Returns whether a CPL status conveys negative advice.
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*/
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static inline bool cxgb_is_neg_adv(unsigned int status)
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{
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return status == CPL_ERR_RTX_NEG_ADVICE ||
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status == CPL_ERR_PERSIST_NEG_ADVICE ||
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status == CPL_ERR_KEEPALV_NEG_ADVICE;
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}
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static inline void
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cxgb_best_mtu(const unsigned short *mtus, unsigned short mtu,
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unsigned int *idx, int use_ts, int ipv6)
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{
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unsigned short hdr_size = (ipv6 ?
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sizeof(struct ipv6hdr) :
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sizeof(struct iphdr)) +
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sizeof(struct tcphdr) +
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(use_ts ?
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round_up(TCPOLEN_TIMESTAMP, 4) : 0);
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unsigned short data_size = mtu - hdr_size;
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cxgb4_best_aligned_mtu(mtus, hdr_size, data_size, 8, idx);
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}
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static inline u32 cxgb_compute_wscale(u32 win)
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{
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u32 wscale = 0;
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while (wscale < 14 && (65535 << wscale) < win)
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wscale++;
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return wscale;
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}
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static inline void
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cxgb_mk_tid_release(struct sk_buff *skb, u32 len, u32 tid, u16 chan)
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{
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struct cpl_tid_release *req;
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req = __skb_put_zero(skb, len);
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INIT_TP_WR(req, tid);
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OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_TID_RELEASE, tid));
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set_wr_txq(skb, CPL_PRIORITY_SETUP, chan);
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}
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static inline void
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cxgb_mk_close_con_req(struct sk_buff *skb, u32 len, u32 tid, u16 chan,
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void *handle, arp_err_handler_t handler)
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{
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struct cpl_close_con_req *req;
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req = __skb_put_zero(skb, len);
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INIT_TP_WR(req, tid);
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OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, tid));
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set_wr_txq(skb, CPL_PRIORITY_DATA, chan);
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t4_set_arp_err_handler(skb, handle, handler);
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}
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static inline void
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cxgb_mk_abort_req(struct sk_buff *skb, u32 len, u32 tid, u16 chan,
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void *handle, arp_err_handler_t handler)
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{
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struct cpl_abort_req *req;
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req = __skb_put_zero(skb, len);
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INIT_TP_WR(req, tid);
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OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_REQ, tid));
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req->cmd = CPL_ABORT_SEND_RST;
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set_wr_txq(skb, CPL_PRIORITY_DATA, chan);
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t4_set_arp_err_handler(skb, handle, handler);
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}
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static inline void
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cxgb_mk_abort_rpl(struct sk_buff *skb, u32 len, u32 tid, u16 chan)
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{
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struct cpl_abort_rpl *rpl;
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rpl = __skb_put_zero(skb, len);
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INIT_TP_WR(rpl, tid);
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OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_RPL, tid));
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rpl->cmd = CPL_ABORT_NO_RST;
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set_wr_txq(skb, CPL_PRIORITY_DATA, chan);
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}
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static inline void
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cxgb_mk_rx_data_ack(struct sk_buff *skb, u32 len, u32 tid, u16 chan,
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u32 credit_dack)
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{
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struct cpl_rx_data_ack *req;
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req = __skb_put_zero(skb, len);
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INIT_TP_WR(req, tid);
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OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_RX_DATA_ACK, tid));
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req->credit_dack = cpu_to_be32(credit_dack);
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set_wr_txq(skb, CPL_PRIORITY_ACK, chan);
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}
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#endif
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