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Many changes in I/O and OSPF sockets and packet handling.

Browse Source 
I/O:
 - BSD: specify src addr on IP sockets by IP_HDRINCL
 - BSD: specify src addr on UDP sockets by IP_SENDSRCADDR
 - Linux: specify src addr on IP/UDP sockets by IP_PKTINFO
 - IPv6: specify src addr on IP/UDP sockets by IPV6_PKTINFO
 - Alternative SKF_BIND flag for binding to IP address
 - Allows IP/UDP sockets without tx_hook, on these
   sockets a packet is discarded when TX queue is full
 - Use consistently SOL_ for socket layer values.

OSPF:
 - Packet src addr is always explicitly set
 - Support for secondary addresses in BSD
 - Dynamic RX/TX buffers
 - Fixes some minor buffer overruns
 - Interface option 'tx length'
 - Names for vlink pseudoifaces (vlinkX)
 - Vlinks use separate socket for TX
 - Vlinks do not use fixed associated iface
 - Fixes TTL for direct unicast packets
 - Fixes DONTROUTE for OSPF sockets
 - Use ifa->ifname instead of ifa->iface->name
This commit is contained in:
Ondrej Zajicek
2014-02-06 17:46:01 +01:00
parent f48fa14214
commit 48e5f32db6
26 changed files with 701 additions and 449 deletions
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17
lib/resource.c
View File

@@ -157,13 +157,13 @@ rfree(void *res)
{
resource *r = res;
if (r)
{
if (r->n.next)
rem_node(&r->n);
r->class->free(r);
xfree(r);
}
if (!r)
return;
if (r->n.next)
rem_node(&r->n);
r->class->free(r);
xfree(r);
}
/**
@@ -408,6 +408,9 @@ mb_realloc(void *m, unsigned size)
void
mb_free(void *m)
{
if (!m)
return;
struct mblock *b = SKIP_BACK(struct mblock, data, m);
rfree(b);
}

18
lib/socket.h
View File

@@ -57,6 +57,9 @@ int sk_open(sock *); /* Open socket */
int sk_send(sock *, unsigned len); /* Send data, <0=err, >0=ok, 0=sleep */
int sk_send_to(sock *, unsigned len, ip_addr to, unsigned port); /* sk_send to given destination */
void sk_reallocate(sock *); /* Free and allocate tbuf & rbuf */
void sk_set_rbsize(sock *s, uint val); /* Resize RX buffer */
void sk_set_tbsize(sock *s, uint val); /* Resize TX buffer, keeping content */
void sk_set_tbuf(sock *s, void *tbuf); /* Switch TX buffer, NULL-> return to internal */
void sk_dump_all(void);
int sk_set_ttl(sock *s, int ttl); /* Set transmit TTL for given socket */
int sk_set_min_ttl(sock *s, int ttl); /* Set minimal accepted TTL for given socket */
@@ -89,10 +92,13 @@ extern int sk_priority_control; /* Suggested priority for control traffic, shoul
#define SKF_V6ONLY 1 /* Use IPV6_V6ONLY socket option */
#define SKF_LADDR_RX 2 /* Report local address for RX packets */
#define SKF_LADDR_TX 4 /* Allow to specify local address for TX packets */
#define SKF_TTL_RX 8 /* Report TTL / Hop Limit for RX packets */
#define SKF_TTL_RX 4 /* Report TTL / Hop Limit for RX packets */
#define SKF_BIND 8 /* Bind datagram socket to given source address */
#define SKF_THREAD 0x100 /* Socked used in thread, Do not add to main loop */
#define SKF_TRUNCATED 0x200 /* Received packet was truncated, set by IO layer */
#define SKF_HDRINCL 0x400 /* Used internally */
#define SKF_PKTINFO 0x800 /* Used internally */
/*
* Socket types SA SP DA DP IF TTL SendTo (?=may, -=must not, *=must)
@@ -118,6 +124,14 @@ extern int sk_priority_control; /* Suggested priority for control traffic, shoul
* call sk_setup_multicast() to enable multicast on that socket,
* and then use sk_join_group() and sk_leave_group() to manage
* a set of received multicast groups.
*
* For datagram (SK_UDP, SK_IP) sockets, there are two ways to handle
* source address. The socket could be bound to it using bind()
* syscall, but that also forbids the reception of multicast packets,
* or the address could be set on per-packet basis using platform
* dependent options (but these are not available in some corner
* cases). The first way is used when SKF_BIND is specified, the
* second way is used otherwise.
*/
#endif