2 * Copyright (c) 2002-2005 The Regents of The University of Michigan
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 * Authors: Nathan Binkert
34 #include "base/cprintf.hh"
35 #include "base/inet.hh"
36 #include "base/types.hh"
43 memset(data
, 0, ETH_ADDR_LEN
);
46 EthAddr::EthAddr(const uint8_t ea
[ETH_ADDR_LEN
])
51 EthAddr::EthAddr(const eth_addr
&ea
)
56 EthAddr::EthAddr(const std::string
&addr
)
62 EthAddr::operator=(const eth_addr
&ea
)
69 EthAddr::operator=(const std::string
&addr
)
76 EthAddr::parse(const std::string
&addr
)
78 // the hack below is to make sure that ETH_ADDR_LEN is 6 otherwise
79 // the sscanf function won't work.
80 int bytes
[ETH_ADDR_LEN
== 6 ? ETH_ADDR_LEN
: -1];
81 if (sscanf(addr
.c_str(), "%x:%x:%x:%x:%x:%x", &bytes
[0], &bytes
[1],
82 &bytes
[2], &bytes
[3], &bytes
[4], &bytes
[5]) != ETH_ADDR_LEN
) {
83 memset(data
, 0xff, ETH_ADDR_LEN
);
87 for (int i
= 0; i
< ETH_ADDR_LEN
; ++i
) {
88 if (bytes
[i
] & ~0xff) {
89 memset(data
, 0xff, ETH_ADDR_LEN
);
98 EthAddr::string() const
106 operator==(const EthAddr
&left
, const EthAddr
&right
)
108 return memcmp(left
.bytes(), right
.bytes(), ETH_ADDR_LEN
);
112 operator<<(ostream
&stream
, const EthAddr
&ea
)
114 const uint8_t *a
= ea
.addr();
115 ccprintf(stream
, "%x:%x:%x:%x:%x:%x", a
[0], a
[1], a
[2], a
[3], a
[4], a
[5]);
120 cksum(const IpPtr
&ptr
)
122 int sum
= ip_cksum_add(ptr
->bytes(), ptr
->hlen(), 0);
123 return ip_cksum_carry(sum
);
127 __tu_cksum(const IpPtr
&ip
)
129 int tcplen
= ip
->len() - ip
->hlen();
130 int sum
= ip_cksum_add(ip
->payload(), tcplen
, 0);
131 sum
= ip_cksum_add(&ip
->ip_src
, 8, sum
); // source and destination
132 sum
+= htons(ip
->ip_p
+ tcplen
);
133 return ip_cksum_carry(sum
);
137 cksum(const TcpPtr
&tcp
)
138 { return __tu_cksum(IpPtr(tcp
.packet())); }
141 cksum(const UdpPtr
&udp
)
142 { return __tu_cksum(IpPtr(udp
.packet())); }
145 IpHdr::options(vector
<const IpOpt
*> &vec
) const
149 const uint8_t *data
= bytes() + sizeof(struct ip_hdr
);
150 int all
= hlen() - sizeof(struct ip_hdr
);
152 const IpOpt
*opt
= (const IpOpt
*)data
;
153 int len
= opt
->len();
166 TcpHdr::options(vector
<const TcpOpt
*> &vec
) const
170 const uint8_t *data
= bytes() + sizeof(struct tcp_hdr
);
171 int all
= off() - sizeof(struct tcp_hdr
);
173 const TcpOpt
*opt
= (const TcpOpt
*)data
;
174 int len
= opt
->len();
187 TcpOpt::sack(vector
<SackRange
> &vec
) const
191 const uint8_t *data
= bytes() + sizeof(struct tcp_hdr
);
192 int all
= len() - offsetof(tcp_opt
, opt_data
.sack
);
194 const uint16_t *sack
= (const uint16_t *)data
;
195 int len
= sizeof(uint16_t) * 2;
201 vec
.push_back(RangeIn(ntohs(sack
[0]), ntohs(sack
[1])));
210 hsplit(const EthPacketPtr
&ptr
)
216 split_point
= ip
.pstart();
220 split_point
= tcp
.pstart();
224 split_point
= udp
.pstart();
230 /* namespace Net */ }