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SOCKET add more skill to interface binding

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If a process opens more than once connection the interfaces are assigned
round-robin from the available ones. However, different processes will
uses a random interface of as starting point. This patch will also
make the redirect case handled correctly.
This commit is contained in:
Peter Lieven
2012-11-06 15:47:30 +01:00
parent f00cd04810
commit 3e57a612db
3 changed files with 18 additions and 5 deletions
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15
lib/socket.c
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@@ -46,6 +46,12 @@
#include "iscsi-private.h"
#include "slist.h"
static uint32_t iface_rr = 0;
void iscsi_decrement_iface_rr() {
iface_rr--;
}
static void set_nonblocking(int fd)
{
#if defined(WIN32)
@@ -219,7 +225,7 @@ iscsi_connect_async(struct iscsi_context *iscsi, const char *portal,
#if __linux
if (iscsi->bind_interfaces[0]) {
char *pchr = iscsi->bind_interfaces, *pchr2;
int iface_n = rand()%iscsi->bind_interface_cnt;
int iface_n = iface_rr++%iscsi->bind_interfaces_cnt;
int iface_c = 0;
do {
pchr2 = strchr(pchr,',');
@@ -677,15 +683,16 @@ void iscsi_set_bind_interfaces(struct iscsi_context *iscsi, char * interfaces)
{
#if __linux
strncpy(iscsi->bind_interfaces,interfaces,MAX_STRING_SIZE);
iscsi->bind_interface_cnt=0;
iscsi->bind_interfaces_cnt=0;
char * pchr = interfaces;
char * pchr2 = NULL;
do {
pchr2 = strchr(pchr,',');
if (pchr2) {pchr=pchr2+1;}
iscsi->bind_interface_cnt++;
iscsi->bind_interfaces_cnt++;
} while (pchr2);
DPRINTF(iscsi,2,"will bind to one of the following %d interface(s) on next socket creation: %s",iscsi->bind_interface_cnt,interfaces);
DPRINTF(iscsi,2,"will bind to one of the following %d interface(s) on next socket creation: %s",iscsi->bind_interfaces_cnt,interfaces);
if (!iface_rr) iface_rr=rand()%iscsi->bind_interfaces_cnt+1;
#else
DPRINTF(iscsi,1,"binding to an interface is not supported on your OS");
#endif