[PATCH net-next 06/14] devlink: remove start variables from dumps

Jakub Kicinski
2023-01-04T04:17:11Z

The start variables made the code clearer when we had to access
cb->args[0] directly, as the name args doesn't explain much.
Now that we use a structure to hold state this seems no longer
needed.

Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
net/devlink/leftover.c | 55 +++++++++++++++---------------------------
1 file changed, 19 insertions(+), 36 deletions(-)

diff --git a/net/devlink/leftover.c b/net/devlink/leftover.c
index bcc930b7cfcf..9aac82dc7269 100644
--- a/net/devlink/leftover.c
+++ b/net/devlink/leftover.c
@@ -1225,7 +1225,6 @@ static int devlink_nl_cmd_rate_get_dumpit(struct sk_buff *msg,
struct devlink_nl_dump_state *dump = devl_dump_state(cb);
struct devlink_rate *devlink_rate;
struct devlink *devlink;
- int start = dump->idx;
unsigned long index;
int idx = 0;
int err = 0;
@@ -1236,7 +1235,7 @@ static int devlink_nl_cmd_rate_get_dumpit(struct sk_buff *msg,
enum devlink_command cmd = DEVLINK_CMD_RATE_NEW;
u32 id = NETLINK_CB(cb->skb).portid;

- if (idx < start) {
+ if (idx < dump->idx) {
idx++;
continue;
}
@@ -1320,13 +1319,12 @@ static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg,
{
struct devlink_nl_dump_state *dump = devl_dump_state(cb);
struct devlink *devlink;
- int start = dump->idx;
unsigned long index;
int idx = 0;
int err;

devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- if (idx < start) {
+ if (idx < dump->idx) {
idx++;
devlink_put(devlink);
continue;
@@ -1377,14 +1375,13 @@ static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
struct devlink *devlink;
struct devlink_port *devlink_port;
unsigned long index, port_index;
- int start = dump->idx;
int idx = 0;
int err;

devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
devl_lock(devlink);
xa_for_each(&devlink->ports, port_index, devlink_port) {
- if (idx < start) {
+ if (idx < dump->idx) {
idx++;
continue;
}
@@ -2156,7 +2153,6 @@ static int devlink_nl_cmd_linecard_get_dumpit(struct sk_buff *msg,
struct devlink_nl_dump_state *dump = devl_dump_state(cb);
struct devlink_linecard *linecard;
struct devlink *devlink;
- int start = dump->idx;
unsigned long index;
int idx = 0;
int err;
@@ -2164,7 +2160,7 @@ static int devlink_nl_cmd_linecard_get_dumpit(struct sk_buff *msg,
devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
mutex_lock(&devlink->linecards_lock);
list_for_each_entry(linecard, &devlink->linecard_list, list) {
- if (idx < start) {
+ if (idx < dump->idx) {
idx++;
continue;
}
@@ -2419,7 +2415,6 @@ static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
struct devlink_nl_dump_state *dump = devl_dump_state(cb);
struct devlink *devlink;
struct devlink_sb *devlink_sb;
- int start = dump->idx;
unsigned long index;
int idx = 0;
int err;
@@ -2427,7 +2422,7 @@ static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
devl_lock(devlink);
list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
- if (idx < start) {
+ if (idx < dump->idx) {
idx++;
continue;
}
@@ -2562,7 +2557,6 @@ static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg,
struct devlink_nl_dump_state *dump = devl_dump_state(cb);
struct devlink *devlink;
struct devlink_sb *devlink_sb;
- int start = dump->idx;
unsigned long index;
int idx = 0;
int err = 0;
@@ -2573,8 +2567,8 @@ static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg,

devl_lock(devlink);
list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
- err = __sb_pool_get_dumpit(msg, start, &idx, devlink,
- devlink_sb,
+ err = __sb_pool_get_dumpit(msg, dump->idx, &idx,
+ devlink, devlink_sb,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq);
if (err == -EOPNOTSUPP) {
@@ -2778,7 +2772,6 @@ static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg,
struct devlink_nl_dump_state *dump = devl_dump_state(cb);
struct devlink *devlink;
struct devlink_sb *devlink_sb;
- int start = dump->idx;
unsigned long index;
int idx = 0;
int err = 0;
@@ -2789,7 +2782,7 @@ static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg,

devl_lock(devlink);
list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
- err = __sb_port_pool_get_dumpit(msg, start, &idx,
+ err = __sb_port_pool_get_dumpit(msg, dump->idx, &idx,
devlink, devlink_sb,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq);
@@ -3022,7 +3015,6 @@ devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
struct devlink_nl_dump_state *dump = devl_dump_state(cb);
struct devlink *devlink;
struct devlink_sb *devlink_sb;
- int start = dump->idx;
unsigned long index;
int idx = 0;
int err = 0;
@@ -3033,9 +3025,8 @@ devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,

devl_lock(devlink);
list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
- err = __sb_tc_pool_bind_get_dumpit(msg, start, &idx,
- devlink,
- devlink_sb,
+ err = __sb_tc_pool_bind_get_dumpit(msg, dump->idx, &idx,
+ devlink, devlink_sb,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq);
if (err == -EOPNOTSUPP) {
@@ -4881,13 +4872,12 @@ static int devlink_nl_cmd_selftests_get_dumpit(struct sk_buff *msg,
{
struct devlink_nl_dump_state *dump = devl_dump_state(cb);
struct devlink *devlink;
- int start = dump->idx;
unsigned long index;
int idx = 0;
int err = 0;

devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- if (idx < start || !devlink->ops->selftest_check)
+ if (idx < dump->idx || !devlink->ops->selftest_check)
goto inc;

devl_lock(devlink);
@@ -5363,7 +5353,6 @@ static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
struct devlink_nl_dump_state *dump = devl_dump_state(cb);
struct devlink_param_item *param_item;
struct devlink *devlink;
- int start = dump->idx;
unsigned long index;
int idx = 0;
int err = 0;
@@ -5371,7 +5360,7 @@ static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
devl_lock(devlink);
list_for_each_entry(param_item, &devlink->param_list, list) {
- if (idx < start) {
+ if (idx < dump->idx) {
idx++;
continue;
}
@@ -6107,14 +6096,13 @@ static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
{
struct devlink_nl_dump_state *dump = devl_dump_state(cb);
struct devlink *devlink;
- int start = dump->idx;
unsigned long index;
int idx = 0;
int err = 0;

devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
err = devlink_nl_cmd_region_get_devlink_dumpit(msg, cb, devlink,
- &idx, start);
+ &idx, dump->idx);
devlink_put(devlink);
if (err)
goto out;
@@ -6759,13 +6747,12 @@ static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg,
{
struct devlink_nl_dump_state *dump = devl_dump_state(cb);
struct devlink *devlink;
- int start = dump->idx;
unsigned long index;
int idx = 0;
int err = 0;

devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- if (idx < start)
+ if (idx < dump->idx)
goto inc;

devl_lock(devlink);
@@ -7930,7 +7917,6 @@ devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
unsigned long index, port_index;
struct devlink_port *port;
struct devlink *devlink;
- int start = dump->idx;
int idx = 0;
int err;

@@ -7938,7 +7924,7 @@ devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
mutex_lock(&devlink->reporters_lock);
list_for_each_entry(reporter, &devlink->reporter_list,
list) {
- if (idx < start) {
+ if (idx < dump->idx) {
idx++;
continue;
}
@@ -7962,7 +7948,7 @@ devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
xa_for_each(&devlink->ports, port_index, port) {
mutex_lock(&port->reporters_lock);
list_for_each_entry(reporter, &port->reporter_list, list) {
- if (idx < start) {
+ if (idx < dump->idx) {
idx++;
continue;
}
@@ -8513,7 +8499,6 @@ static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
struct devlink_nl_dump_state *dump = devl_dump_state(cb);
struct devlink_trap_item *trap_item;
struct devlink *devlink;
- int start = dump->idx;
unsigned long index;
int idx = 0;
int err;
@@ -8521,7 +8506,7 @@ static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
devl_lock(devlink);
list_for_each_entry(trap_item, &devlink->trap_list, list) {
- if (idx < start) {
+ if (idx < dump->idx) {
idx++;
continue;
}
@@ -8731,7 +8716,6 @@ static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
struct devlink_trap_group_item *group_item;
u32 portid = NETLINK_CB(cb->skb).portid;
struct devlink *devlink;
- int start = dump->idx;
unsigned long index;
int idx = 0;
int err;
@@ -8740,7 +8724,7 @@ static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
devl_lock(devlink);
list_for_each_entry(group_item, &devlink->trap_group_list,
list) {
- if (idx < start) {
+ if (idx < dump->idx) {
idx++;
continue;
}
@@ -9036,7 +9020,6 @@ static int devlink_nl_cmd_trap_policer_get_dumpit(struct sk_buff *msg,
struct devlink_trap_policer_item *policer_item;
u32 portid = NETLINK_CB(cb->skb).portid;
struct devlink *devlink;
- int start = dump->idx;
unsigned long index;
int idx = 0;
int err;
@@ -9045,7 +9028,7 @@ static int devlink_nl_cmd_trap_policer_get_dumpit(struct sk_buff *msg,
devl_lock(devlink);
list_for_each_entry(policer_item, &devlink->trap_policer_list,
list) {
- if (idx < start) {
+ if (idx < dump->idx) {
idx++;
continue;
}
--
2.38.1