mirror/lwip
1
0
Fork 0
mirror of https://github.com/lwip-tcpip/lwip.git synced 2024-06-30 18:09:02 +00:00
Code Issues Packages Projects Releases Wiki Activity

Combined etharp_request with etharp_raw for both LWIP_AUTOIP =0 and =1 to remove redundant code.

Browse Source
This commit is contained in:
goldsimon 2007-06-24 12:51:22 +00:00
parent 4848de3a8e
commit b51d1b79a3
4 changed files with 54 additions and 107 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
CHANGELOG
View File

@ -19,6 +19,10 @@ HISTORY
++ New features:
2007-06-21 Simon Goldschmidt
* etharp.h, etharp.c: Combined etharp_request with etharp_raw for both
LWIP_AUTOIP =0 and =1 to remove redundant code.
2007-06-21 Simon Goldschmidt
* mem.c, memp.c, mem.h, memp.h, opt.h: task #6863: Introduced the option
MEM_USE_POOLS to use 4 pools with different sized elements instead of a

29
src/include/lwip/opt.h
View File

@ -216,51 +216,46 @@
#define ARP_TABLE_SIZE 10
#endif
/**
* If enabled, outgoing packets are queued during hardware address
/** If enabled, outgoing packets are queued during hardware address
* resolution.
*
* This feature has not stabilized yet. Single-packet queueing is
* believed to be stable, multi-packet queueing is believed to
* clash with the TCP segment queueing.
*
* As multi-packet-queueing is currently disabled, enabling this
* _should_ work, but we need your testing feedback on lwip-users.
*
*/
#ifndef ARP_QUEUEING
#define ARP_QUEUEING 1
#endif
/* If enabled, incoming IP packets cause the ARP table to be updated
/** If enabled, incoming IP packets cause the ARP table to be updated
* with the source MAC and IP addresses supplied in the packet. You may
* want to disable this if you do not trust LAN peers to have the
* correct addresses, or as a limited approach to attempt to handle
* spoofing. If disabled, lwIP will need to make a new ARP request if
* the peer is not already in the ARP table, adding a little latency.
*/
#ifndef ETHARP_TRUST_IP_MAC
#define ETHARP_TRUST_IP_MAC 1
#endif
/* If enabled, allow to do ARP processing for incoming packets inside network driver, before process packets using the tcpip_input. */
/** If enabled, allow to do ARP processing for incoming packets inside network
* driver, before process packets using the tcpip_input.
*/
#ifndef ETHARP_TCPIP_INPUT
#define ETHARP_TCPIP_INPUT 1
#endif
/* If enabled, allow to do ARP processing for incoming packets inside tcpip_thread, using the tcpip_ethinput (and not tcpip_input).
The aim is to protect ARP layer against concurrent access. Older ports have to be update to use tcpip_ethinput. */
/** If enabled, allow to do ARP processing for incoming packets inside tcpip_thread,
* using the tcpip_ethinput (and not tcpip_input).
* The aim is to protect ARP layer against concurrent access. Older ports have
* to be update to use tcpip_ethinput.
*/
#ifndef ETHARP_TCPIP_ETHINPUT
#define ETHARP_TCPIP_ETHINPUT 1
#endif
/* This option is deprecated */
/** This option is deprecated */
#ifdef ETHARP_QUEUE_FIRST
#error ETHARP_QUEUE_FIRST option is deprecated. Remove it from your lwipopts.h.
#endif
/* This option is removed to comply with the ARP standard */
/** This option is removed to comply with the ARP standard */
#ifdef ETHARP_ALWAYS_INSERT
#error ETHARP_ALWAYS_INSERT option is deprecated. Remove it from your lwipopts.h.
#endif

9
src/include/netif/etharp.h
View File

@ -148,10 +148,11 @@ err_t etharp_query(struct netif *netif, struct ip_addr *ipaddr, struct pbuf *q);
err_t etharp_request(struct netif *netif, struct ip_addr *ipaddr);
#if LWIP_AUTOIP
err_t etharp_raw(struct netif *netif, struct eth_addr *ethsrc_addr, struct eth_addr *ethdst_addr,
struct eth_addr *hwsrc_addr, struct ip_addr *ipsrc_addr,
struct eth_addr *hwdst_addr, struct ip_addr *ipdst_addr,
unsigned short int opcode);
err_t etharp_raw(struct netif *netif, const struct eth_addr *ethsrc_addr,
const struct eth_addr *ethdst_addr,
const struct eth_addr *hwsrc_addr, const struct ip_addr *ipsrc_addr,
const struct eth_addr *hwdst_addr, const struct ip_addr *ipdst_addr,
const u16_t opcode);
#endif /* LWIP_AUTOIP */
#define eth_addr_cmp(addr1, addr2) (memcmp((addr1)->addr, (addr2)->addr, ETHARP_HWADDR_LEN) == 0)

119
src/netif/etharp.c
View File

@ -103,6 +103,7 @@ struct etharp_entry {
};
static const struct eth_addr ethbroadcast = {{0xff,0xff,0xff,0xff,0xff,0xff}};
static const struct eth_addr ethzero = {{0,0,0,0,0,0}};
static struct etharp_entry arp_table[ARP_TABLE_SIZE];
static u8_t etharp_cached_entry = 0;
@ -927,43 +928,29 @@ etharp_query(struct netif *netif, struct ip_addr *ipaddr, struct pbuf *q)
return result;
}
#if LWIP_AUTOIP
/**
* Send an ARP request packet asking for ipaddr.
* Send a raw ARP packet (opcode and all addresses can be modified)
*
* @param netif the lwip network interface on which to send the request
* @param ipaddr the IP address for which to ask
* @return ERR_OK if the request has been sent
* @param netif the lwip network interface on which to send the ARP packet
* @param ethsrc_addr the source MAC address for the ethernet header
* @param ethdst_addr the destination MAC address for the ethernet header
* @param hwsrc_addr the source MAC address for the ARP protocol header
* @param ipsrc_addr the source IP address for the ARP protocol header
* @param hwdst_addr the destination MAC address for the ARP protocol header
* @param ipdst_addr the destination IP address for the ARP protocol header
* @param opcode the type of the ARP packet
* @return ERR_OK if the ARP packet has been sent
* any other err_t on failure
*/
#if !LWIP_AUTOIP
static
#endif /* LWIP_AUTOIP */
err_t
etharp_request(struct netif *netif, struct ip_addr *ipaddr)
{
struct eth_addr eth_addr_bc, eth_addr_zero;
u8_t k = ETHARP_HWADDR_LEN;
LWIP_ASSERT("netif->hwaddr_len must be the same as ETHARP_HWADDR_LEN for etharp!",
(netif->hwaddr_len == ETHARP_HWADDR_LEN));
while(k > 0) {
k--;
eth_addr_bc.addr[k] = 0xFF;
eth_addr_zero.addr[k] = 0x00;
}
LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_request: sending ARP request.\n"));
return etharp_raw( netif,
(struct eth_addr *)netif->hwaddr,
&eth_addr_bc,
(struct eth_addr *)netif->hwaddr,
&netif->ip_addr,
&eth_addr_zero,
ipaddr,
ARP_REQUEST
);
}
err_t
etharp_raw(struct netif *netif, struct eth_addr *ethsrc_addr, struct eth_addr *ethdst_addr, struct eth_addr *hwsrc_addr, struct ip_addr *ipsrc_addr, struct eth_addr *hwdst_addr, struct ip_addr *ipdst_addr, unsigned short int OpCode)
etharp_raw(struct netif *netif, const struct eth_addr *ethsrc_addr,
const struct eth_addr *ethdst_addr,
const struct eth_addr *hwsrc_addr, const struct ip_addr *ipsrc_addr,
const struct eth_addr *hwdst_addr, const struct ip_addr *ipdst_addr,
const u16_t opcode)
{
struct pbuf *p;
err_t result = ERR_OK;
@ -975,11 +962,10 @@ etharp_raw(struct netif *netif, struct eth_addr *ethsrc_addr, struct eth_addr *e
if (p != NULL) {
struct etharp_hdr *hdr = p->payload;
LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_raw: sending raw ARP packet.\n"));
hdr->opcode = htons(OpCode);
k = ETHARP_HWADDR_LEN;
hdr->opcode = htons(opcode);
LWIP_ASSERT("netif->hwaddr_len must be the same as ETHARP_HWADDR_LEN for etharp!",
(netif->hwaddr_len == ETHARP_HWADDR_LEN));
k = ETHARP_HWADDR_LEN;
/* Write the ARP MAC-Addresses */
while(k > 0) {
k--;
@ -1017,7 +1003,7 @@ etharp_raw(struct netif *netif, struct eth_addr *ethsrc_addr, struct eth_addr *e
return result;
}
#else
/**
* Send an ARP request packet asking for ipaddr.
*
@ -1029,54 +1015,15 @@ etharp_raw(struct netif *netif, struct eth_addr *ethsrc_addr, struct eth_addr *e
err_t
etharp_request(struct netif *netif, struct ip_addr *ipaddr)
{
struct pbuf *p;
struct eth_addr * srcaddr = (struct eth_addr *)netif->hwaddr;
err_t result = ERR_OK;
u8_t k; /* ARP entry index */
/* allocate a pbuf for the outgoing ARP request packet */
p = pbuf_alloc(PBUF_LINK, sizeof(struct etharp_hdr), PBUF_RAM);
/* could allocate a pbuf for an ARP request? */
if (p != NULL) {
struct etharp_hdr *hdr = p->payload;
LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_request: sending ARP request.\n"));
hdr->opcode = htons(ARP_REQUEST);
LWIP_ASSERT("netif->hwaddr_len must be the same as ETHARP_HWADDR_LEN for etharp!",
(netif->hwaddr_len == ETHARP_HWADDR_LEN));
k = ETHARP_HWADDR_LEN;
while(k > 0) {
k--;
hdr->shwaddr.addr[k] = srcaddr->addr[k];
/* the hardware address is what we ask for, in
* a request it is a don't-care value, we use zeroes */
hdr->dhwaddr.addr[k] = 0x00;
}
hdr->dipaddr = *(struct ip_addr2 *)ipaddr;
hdr->sipaddr = *(struct ip_addr2 *)&netif->ip_addr;
hdr->hwtype = htons(HWTYPE_ETHERNET);
ARPH_HWLEN_SET(hdr, netif->hwaddr_len);
hdr->proto = htons(ETHTYPE_IP);
ARPH_PROTOLEN_SET(hdr, sizeof(struct ip_addr));
k = ETHARP_HWADDR_LEN;
while(k > 0) {
k--;
/* broadcast to all network interfaces on the local network */
hdr->ethhdr.dest.addr[k] = 0xff;
hdr->ethhdr.src.addr[k] = srcaddr->addr[k];
}
hdr->ethhdr.type = htons(ETHTYPE_ARP);
/* send ARP query */
result = netif->linkoutput(netif, p);
/* free ARP query packet */
pbuf_free(p);
p = NULL;
/* could not allocate pbuf for ARP request */
} else {
result = ERR_MEM;
LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE | 2, ("etharp_request: could not allocate pbuf for ARP request.\n"));
}
return result;
LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_request: sending ARP request.\n"));
return etharp_raw( netif,
(struct eth_addr *)netif->hwaddr,
&ethbroadcast,
(struct eth_addr *)netif->hwaddr,
&netif->ip_addr,
&ethzero,
ipaddr,
ARP_REQUEST
);
}
#endif /* LWIP_AUTOIP */