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path: root/fs/afs/vl_probe.c
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Diffstat (limited to 'fs/afs/vl_probe.c')
-rw-r--r--fs/afs/vl_probe.c60
1 files changed, 39 insertions, 21 deletions
diff --git a/fs/afs/vl_probe.c b/fs/afs/vl_probe.c
index 58452b86e672..3d2e0c925460 100644
--- a/fs/afs/vl_probe.c
+++ b/fs/afs/vl_probe.c
@@ -46,11 +46,12 @@ static void afs_done_one_vl_probe(struct afs_vlserver *server, bool wake_up)
*/
void afs_vlserver_probe_result(struct afs_call *call)
{
- struct afs_addr_list *alist = call->alist;
+ struct afs_addr_list *alist = call->vl_probe;
struct afs_vlserver *server = call->vlserver;
+ struct afs_address *addr = &alist->addrs[call->probe_index];
unsigned int server_index = call->server_index;
unsigned int rtt_us = 0;
- unsigned int index = call->addr_ix;
+ unsigned int index = call->probe_index;
bool have_result = false;
int ret = call->error;
@@ -89,7 +90,7 @@ void afs_vlserver_probe_result(struct afs_call *call)
case -ETIME:
default:
clear_bit(index, &alist->responded);
- set_bit(index, &alist->failed);
+ set_bit(index, &alist->probe_failed);
if (!(server->probe.flags & AFS_VLSERVER_PROBE_RESPONDED) &&
(server->probe.error == 0 ||
server->probe.error == -ETIMEDOUT ||
@@ -101,21 +102,21 @@ void afs_vlserver_probe_result(struct afs_call *call)
responded:
set_bit(index, &alist->responded);
- clear_bit(index, &alist->failed);
+ clear_bit(index, &alist->probe_failed);
if (call->service_id == YFS_VL_SERVICE) {
server->probe.flags |= AFS_VLSERVER_PROBE_IS_YFS;
set_bit(AFS_VLSERVER_FL_IS_YFS, &server->flags);
- alist->addrs[index].srx_service = call->service_id;
+ server->service_id = call->service_id;
} else {
server->probe.flags |= AFS_VLSERVER_PROBE_NOT_YFS;
if (!(server->probe.flags & AFS_VLSERVER_PROBE_IS_YFS)) {
clear_bit(AFS_VLSERVER_FL_IS_YFS, &server->flags);
- alist->addrs[index].srx_service = call->service_id;
+ server->service_id = call->service_id;
}
}
- rxrpc_kernel_get_srtt(call->net->socket, call->rxcall, &rtt_us);
+ rtt_us = rxrpc_kernel_get_srtt(addr->peer);
if (rtt_us < server->probe.rtt) {
server->probe.rtt = rtt_us;
server->rtt = rtt_us;
@@ -130,8 +131,10 @@ responded:
out:
spin_unlock(&server->probe_lock);
- _debug("probe [%u][%u] %pISpc rtt=%u ret=%d",
- server_index, index, &alist->addrs[index].transport, rtt_us, ret);
+ trace_afs_vl_probe(server, false, alist, index, call->error, call->abort_code, rtt_us);
+ _debug("probe [%u][%u] %pISpc rtt=%d ret=%d",
+ server_index, index, rxrpc_kernel_remote_addr(addr->peer),
+ rtt_us, ret);
afs_done_one_vl_probe(server, have_result);
}
@@ -146,35 +149,52 @@ static bool afs_do_probe_vlserver(struct afs_net *net,
unsigned int server_index,
struct afs_error *_e)
{
- struct afs_addr_cursor ac = {
- .index = 0,
- };
+ struct afs_addr_list *alist;
struct afs_call *call;
+ unsigned long unprobed;
+ unsigned int index, i;
bool in_progress = false;
+ int best_prio;
_enter("%s", server->name);
read_lock(&server->lock);
- ac.alist = rcu_dereference_protected(server->addresses,
- lockdep_is_held(&server->lock));
+ alist = rcu_dereference_protected(server->addresses,
+ lockdep_is_held(&server->lock));
+ afs_get_addrlist(alist, afs_alist_trace_get_vlprobe);
read_unlock(&server->lock);
- atomic_set(&server->probe_outstanding, ac.alist->nr_addrs);
+ atomic_set(&server->probe_outstanding, alist->nr_addrs);
memset(&server->probe, 0, sizeof(server->probe));
server->probe.rtt = UINT_MAX;
- for (ac.index = 0; ac.index < ac.alist->nr_addrs; ac.index++) {
- call = afs_vl_get_capabilities(net, &ac, key, server,
+ unprobed = (1UL << alist->nr_addrs) - 1;
+ while (unprobed) {
+ best_prio = -1;
+ index = 0;
+ for (i = 0; i < alist->nr_addrs; i++) {
+ if (test_bit(i, &unprobed) &&
+ alist->addrs[i].prio > best_prio) {
+ index = i;
+ best_prio = alist->addrs[i].prio;
+ }
+ }
+ __clear_bit(index, &unprobed);
+
+ trace_afs_vl_probe(server, true, alist, index, 0, 0, 0);
+ call = afs_vl_get_capabilities(net, alist, index, key, server,
server_index);
if (!IS_ERR(call)) {
+ afs_prioritise_error(_e, call->error, call->abort_code);
afs_put_call(call);
in_progress = true;
} else {
- afs_prioritise_error(_e, PTR_ERR(call), ac.abort_code);
+ afs_prioritise_error(_e, PTR_ERR(call), 0);
afs_done_one_vl_probe(server, false);
}
}
+ afs_put_addrlist(alist, afs_alist_trace_put_vlprobe);
return in_progress;
}
@@ -185,12 +205,10 @@ int afs_send_vl_probes(struct afs_net *net, struct key *key,
struct afs_vlserver_list *vllist)
{
struct afs_vlserver *server;
- struct afs_error e;
+ struct afs_error e = {};
bool in_progress = false;
int i;
- e.error = 0;
- e.responded = false;
for (i = 0; i < vllist->nr_servers; i++) {
server = vllist->servers[i].server;
if (test_bit(AFS_VLSERVER_FL_PROBED, &server->flags))