bonding: convert packets_per_slave to use the new option API

This patch adds the necessary changes so packets_per_slave would use the
new bonding option API.

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

6 files changed, 27 insertions, 32 deletions

diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 7a04f0f8449e..a50577bc8bc1 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -4145,7 +4145,8 @@ static int bond_check_params(struct bond_params *params)
                 resend_igmp = BOND_DEFAULT_RESEND_IGMP;
         }
 
-        if (packets_per_slave < 0 || packets_per_slave > USHRT_MAX) {
+        bond_opt_initval(&newval, packets_per_slave);
+        if (!bond_opt_parse(bond_opt_get(BOND_OPT_PACKETS_PER_SLAVE), &newval)) {
                 pr_warn("Warning: packets_per_slave (%d) should be between 0 and %u resetting to 1\n",
                         packets_per_slave, USHRT_MAX);
                 packets_per_slave = 1;
diff --git a/drivers/net/bonding/bond_netlink.c b/drivers/net/bonding/bond_netlink.c
index db3f672a5e2a..8936a911ebe2 100644
--- a/drivers/net/bonding/bond_netlink.c
+++ b/drivers/net/bonding/bond_netlink.c
@@ -287,8 +287,8 @@ static int bond_changelink(struct net_device *bond_dev,
                 int packets_per_slave =
                         nla_get_u32(data[IFLA_BOND_PACKETS_PER_SLAVE]);
 
-                err = bond_option_packets_per_slave_set(bond,
-                                                        packets_per_slave);
+                bond_opt_initval(&newval, packets_per_slave);
+                err = __bond_opt_set(bond, BOND_OPT_PACKETS_PER_SLAVE, &newval);
                 if (err)
                         return err;
         }
diff --git a/drivers/net/bonding/bond_options.c b/drivers/net/bonding/bond_options.c
index 5696b2fb5cb4..6d2a7d9cee19 100644
--- a/drivers/net/bonding/bond_options.c
+++ b/drivers/net/bonding/bond_options.c
@@ -30,6 +30,12 @@ static struct bond_opt_value bond_mode_tbl[] = {
         { NULL,            -1,                     0},
 };
 
+static struct bond_opt_value bond_pps_tbl[] = {
+        { "default", 1,         BOND_VALFLAG_DEFAULT},
+        { "maxval",  USHRT_MAX, BOND_VALFLAG_MAX},
+        { NULL,      -1,        0},
+};
+
 static struct bond_option bond_opts[] = {
         [BOND_OPT_MODE] = {
                 .id = BOND_OPT_MODE,
@@ -39,6 +45,14 @@ static struct bond_option bond_opts[] = {
                 .values = bond_mode_tbl,
                 .set = bond_option_mode_set
         },
+        [BOND_OPT_PACKETS_PER_SLAVE] = {
+                .id = BOND_OPT_PACKETS_PER_SLAVE,
+                .name = "packets_per_slave",
+                .desc = "Packets to send per slave in RR mode",
+                .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ROUNDROBIN)),
+                .values = bond_pps_tbl,
+                .set = bond_option_pps_set
+        },
         { }
 };
 
@@ -934,23 +948,12 @@ int bond_option_lp_interval_set(struct bonding *bond, int lp_interval)
         return 0;
 }
 
-int bond_option_packets_per_slave_set(struct bonding *bond,
-                                      int packets_per_slave)
+int bond_option_pps_set(struct bonding *bond, struct bond_opt_value *newval)
 {
-        if (packets_per_slave < 0 || packets_per_slave > USHRT_MAX) {
-                pr_err("%s: packets_per_slave must be between 0 and %u\n",
-                       bond->dev->name, USHRT_MAX);
-                return -EINVAL;
-        }
-
-        if (bond->params.mode != BOND_MODE_ROUNDROBIN)
-                pr_warn("%s: Warning: packets_per_slave has effect only in balance-rr mode\n",
-                        bond->dev->name);
-
-        bond->params.packets_per_slave = packets_per_slave;
-        if (packets_per_slave > 0) {
+        bond->params.packets_per_slave = newval->value;
+        if (newval->value > 0) {
                 bond->params.reciprocal_packets_per_slave =
-                        reciprocal_value(packets_per_slave);
+                        reciprocal_value(newval->value);
         } else {
                 /* reciprocal_packets_per_slave is unused if
                  * packets_per_slave is 0 or 1, just initialize it
diff --git a/drivers/net/bonding/bond_options.h b/drivers/net/bonding/bond_options.h
index 11e6c0697aed..f8590767c18e 100644
--- a/drivers/net/bonding/bond_options.h
+++ b/drivers/net/bonding/bond_options.h
@@ -39,6 +39,7 @@ enum {
 /* Option IDs, their bit positions correspond to their IDs */
 enum {
         BOND_OPT_MODE,
+        BOND_OPT_PACKETS_PER_SLAVE,
         BOND_OPT_LAST
 };
 
@@ -100,4 +101,5 @@ static inline void __bond_opt_init(struct bond_opt_value *optval,
 #define bond_opt_initstr(optval, str) __bond_opt_init(optval, str, ULLONG_MAX)
 
 int bond_option_mode_set(struct bonding *bond, struct bond_opt_value *newval);
+int bond_option_pps_set(struct bonding *bond, struct bond_opt_value *newval);
 #endif /* _BOND_OPTIONS_H */
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index 3e537e7b66a5..34815843f6a9 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -1368,22 +1368,13 @@ static ssize_t bonding_store_packets_per_slave(struct device *d,
                                                const char *buf, size_t count)
 {
         struct bonding *bond = to_bond(d);
-        int new_value, ret;
-
-        if (sscanf(buf, "%d", &new_value) != 1) {
-                pr_err("%s: no packets_per_slave value specified.\n",
-                       bond->dev->name);
-                return -EINVAL;
-        }
-
-        if (!rtnl_trylock())
-                return restart_syscall();
+        int ret;
 
-        ret = bond_option_packets_per_slave_set(bond, new_value);
+        ret = bond_opt_tryset_rtnl(bond, BOND_OPT_PACKETS_PER_SLAVE,
+                                   (char *)buf);
         if (!ret)
                 ret = count;
 
-        rtnl_unlock();
         return ret;
 }
 
diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h
index f8e2cab90020..f9c8a7aff1b4 100644
--- a/drivers/net/bonding/bonding.h
+++ b/drivers/net/bonding/bonding.h
@@ -476,8 +476,6 @@ int bond_option_all_slaves_active_set(struct bonding *bond,
                                       int all_slaves_active);
 int bond_option_min_links_set(struct bonding *bond, int min_links);
 int bond_option_lp_interval_set(struct bonding *bond, int min_links);
-int bond_option_packets_per_slave_set(struct bonding *bond,
-                                      int packets_per_slave);
 int bond_option_lacp_rate_set(struct bonding *bond, int lacp_rate);
 int bond_option_ad_select_set(struct bonding *bond, int ad_select);
 struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond);