| Message ID | 153628137248.8267.6726065772840936203.stgit@noble (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Beginning of multi-rail support for drivers/staging/lustre | expand |
Reviewed-by: Doug Oucharek <dougso@me.com> Doug On 9/6/18, 5:55 PM, "NeilBrown" <neilb@suse.com> wrote: Use the correct count of interfaces when calling lnet_ping_info_setup() in lnet_dyn_add_ni() Signed-off-by: NeilBrown <neilb@suse.com> --- drivers/staging/lustre/lnet/lnet/api-ni.c | 27 ++++++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) diff --git a/drivers/staging/lustre/lnet/lnet/api-ni.c b/drivers/staging/lustre/lnet/lnet/api-ni.c index cf0ffb8ac84b..2ce0a7212dc2 100644 --- a/drivers/staging/lustre/lnet/lnet/api-ni.c +++ b/drivers/staging/lustre/lnet/lnet/api-ni.c @@ -871,6 +871,18 @@ lnet_ping_info_create(int num_ni) return ping_info; } +static inline int +lnet_get_net_ni_count_locked(struct lnet_net *net) +{ + struct lnet_ni *ni; + int count = 0; + + list_for_each_entry(ni, &net->net_ni_list, ni_netlist) + count++; + + return count; +} + static inline int lnet_get_ni_count(void) { @@ -1977,6 +1989,7 @@ lnet_dyn_add_ni(lnet_pid_t requested_pid, struct lnet_ioctl_config_data *conf) struct list_head net_head; struct lnet_remotenet *rnet; int rc; + int net_ni_count; int num_acceptor_nets; __u32 net_type; struct lnet_ioctl_config_lnd_tunables *lnd_tunables = NULL; @@ -2014,7 +2027,19 @@ lnet_dyn_add_ni(lnet_pid_t requested_pid, struct lnet_ioctl_config_data *conf) goto failed0; } - rc = lnet_ping_info_setup(&pinfo, &md_handle, 1 + lnet_get_ni_count(), + /* + * make sure you calculate the correct number of slots in the ping + * info. Since the ping info is a flattened list of all the NIs, + * we should allocate enough slots to accomodate the number of NIs + * which will be added. + * + * We can use lnet_get_net_ni_count_locked() since the net is not + * on a public list yet, so locking is not a problem + */ + net_ni_count = lnet_get_net_ni_count_locked(net); + + rc = lnet_ping_info_setup(&pinfo, &md_handle, + net_ni_count + lnet_get_ni_count(), false); if (rc) goto failed0;
diff --git a/drivers/staging/lustre/lnet/lnet/api-ni.c b/drivers/staging/lustre/lnet/lnet/api-ni.c index cf0ffb8ac84b..2ce0a7212dc2 100644 --- a/drivers/staging/lustre/lnet/lnet/api-ni.c +++ b/drivers/staging/lustre/lnet/lnet/api-ni.c @@ -871,6 +871,18 @@ lnet_ping_info_create(int num_ni) return ping_info; } +static inline int +lnet_get_net_ni_count_locked(struct lnet_net *net) +{ + struct lnet_ni *ni; + int count = 0; + + list_for_each_entry(ni, &net->net_ni_list, ni_netlist) + count++; + + return count; +} + static inline int lnet_get_ni_count(void) { @@ -1977,6 +1989,7 @@ lnet_dyn_add_ni(lnet_pid_t requested_pid, struct lnet_ioctl_config_data *conf) struct list_head net_head; struct lnet_remotenet *rnet; int rc; + int net_ni_count; int num_acceptor_nets; __u32 net_type; struct lnet_ioctl_config_lnd_tunables *lnd_tunables = NULL; @@ -2014,7 +2027,19 @@ lnet_dyn_add_ni(lnet_pid_t requested_pid, struct lnet_ioctl_config_data *conf) goto failed0; } - rc = lnet_ping_info_setup(&pinfo, &md_handle, 1 + lnet_get_ni_count(), + /* + * make sure you calculate the correct number of slots in the ping + * info. Since the ping info is a flattened list of all the NIs, + * we should allocate enough slots to accomodate the number of NIs + * which will be added. + * + * We can use lnet_get_net_ni_count_locked() since the net is not + * on a public list yet, so locking is not a problem + */ + net_ni_count = lnet_get_net_ni_count_locked(net); + + rc = lnet_ping_info_setup(&pinfo, &md_handle, + net_ni_count + lnet_get_ni_count(), false); if (rc) goto failed0;
Use the correct count of interfaces when calling lnet_ping_info_setup() in lnet_dyn_add_ni() Signed-off-by: NeilBrown <neilb@suse.com> --- drivers/staging/lustre/lnet/lnet/api-ni.c | 27 ++++++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-)