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Subject[PATCH 1/3] staging: batman-adv: remove useless addr_to_string()
Date
Since all *printf() methods in the kernel understand '%pM' modifier the
conversion to the string is useless beforehand.

Additionally this patch decreases batman_if structure by 20 bytes.

Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
---
drivers/staging/batman-adv/hard-interface.c | 2 --
drivers/staging/batman-adv/main.c | 5 -----
drivers/staging/batman-adv/main.h | 2 --
drivers/staging/batman-adv/originator.c | 16 ++++++----------
drivers/staging/batman-adv/routing.c | 4 ++--
drivers/staging/batman-adv/send.c | 8 ++++----
drivers/staging/batman-adv/types.h | 1 -
drivers/staging/batman-adv/vis.c | 15 ++++-----------
8 files changed, 16 insertions(+), 37 deletions(-)

diff --git a/drivers/staging/batman-adv/hard-interface.c b/drivers/staging/batman-adv/hard-interface.c
index 7b77cf2..80cfa86 100644
--- a/drivers/staging/batman-adv/hard-interface.c
+++ b/drivers/staging/batman-adv/hard-interface.c
@@ -159,8 +159,6 @@ static bool hardif_is_iface_up(struct batman_if *batman_if)

static void update_mac_addresses(struct batman_if *batman_if)
{
- addr_to_string(batman_if->addr_str, batman_if->net_dev->dev_addr);
-
memcpy(((struct batman_packet *)(batman_if->packet_buff))->orig,
batman_if->net_dev->dev_addr, ETH_ALEN);
memcpy(((struct batman_packet *)(batman_if->packet_buff))->prev_sender,
diff --git a/drivers/staging/batman-adv/main.c b/drivers/staging/batman-adv/main.c
index 580ca02..0587940 100644
--- a/drivers/staging/batman-adv/main.c
+++ b/drivers/staging/batman-adv/main.c
@@ -145,11 +145,6 @@ void dec_module_count(void)
module_put(THIS_MODULE);
}

-int addr_to_string(char *buff, uint8_t *addr)
-{
- return sprintf(buff, "%pM", addr);
-}
-
/* returns 1 if they are the same originator */

int compare_orig(void *data1, void *data2)
diff --git a/drivers/staging/batman-adv/main.h b/drivers/staging/batman-adv/main.h
index ca97589..5e3f516 100644
--- a/drivers/staging/batman-adv/main.h
+++ b/drivers/staging/batman-adv/main.h
@@ -58,7 +58,6 @@

#define PACKBUFF_SIZE 2000
#define LOG_BUF_LEN 8192 /* has to be a power of 2 */
-#define ETH_STR_LEN 20

#define VIS_INTERVAL 5000 /* 5 seconds */

@@ -136,7 +135,6 @@ int mesh_init(struct net_device *soft_iface);
void mesh_free(struct net_device *soft_iface);
void inc_module_count(void);
void dec_module_count(void);
-int addr_to_string(char *buff, uint8_t *addr);
int compare_orig(void *data1, void *data2);
int choose_orig(void *data, int32_t size);
int is_my_mac(uint8_t *addr);
diff --git a/drivers/staging/batman-adv/originator.c b/drivers/staging/batman-adv/originator.c
index c530df1..dd98f58 100644
--- a/drivers/staging/batman-adv/originator.c
+++ b/drivers/staging/batman-adv/originator.c
@@ -315,7 +315,6 @@ int orig_seq_print_text(struct seq_file *seq, void *offset)
int last_seen_secs;
int last_seen_msecs;
unsigned long flags;
- char orig_str[ETH_STR_LEN], router_str[ETH_STR_LEN];

if ((!bat_priv->primary_if) ||
(bat_priv->primary_if->if_status != IF_ACTIVE)) {
@@ -329,10 +328,10 @@ int orig_seq_print_text(struct seq_file *seq, void *offset)
net_dev->name);
}

- seq_printf(seq, "[B.A.T.M.A.N. adv %s%s, MainIF/MAC: %s/%s (%s)]\n",
+ seq_printf(seq, "[B.A.T.M.A.N. adv %s%s, MainIF/MAC: %s/%pM (%s)]\n",
SOURCE_VERSION, REVISION_VERSION_STR,
bat_priv->primary_if->net_dev->name,
- bat_priv->primary_if->addr_str, net_dev->name);
+ bat_priv->primary_if->net_dev->dev_addr, net_dev->name);
seq_printf(seq, " %-15s %s (%s/%i) %17s [%10s]: %20s ...\n",
"Originator", "last-seen", "#", TQ_MAX_VALUE, "Nexthop",
"outgoingIF", "Potential nexthops");
@@ -349,21 +348,18 @@ int orig_seq_print_text(struct seq_file *seq, void *offset)
if (orig_node->router->tq_avg == 0)
continue;

- addr_to_string(orig_str, orig_node->orig);
- addr_to_string(router_str, orig_node->router->addr);
last_seen_secs = jiffies_to_msecs(jiffies -
orig_node->last_valid) / 1000;
last_seen_msecs = jiffies_to_msecs(jiffies -
orig_node->last_valid) % 1000;

- seq_printf(seq, "%-17s %4i.%03is (%3i) %17s [%10s]:",
- orig_str, last_seen_secs, last_seen_msecs,
- orig_node->router->tq_avg, router_str,
+ seq_printf(seq, "%pM %4i.%03is (%3i) %pM [%10s]:",
+ orig_node->orig, last_seen_secs, last_seen_msecs,
+ orig_node->router->tq_avg, orig_node->router->addr,
orig_node->router->if_incoming->net_dev->name);

list_for_each_entry(neigh_node, &orig_node->neigh_list, list) {
- addr_to_string(orig_str, neigh_node->addr);
- seq_printf(seq, " %17s (%3i)", orig_str,
+ seq_printf(seq, " %pM (%3i)", neigh_node->addr,
neigh_node->tq_avg);
}

diff --git a/drivers/staging/batman-adv/routing.c b/drivers/staging/batman-adv/routing.c
index 58aa99e..9010263 100644
--- a/drivers/staging/batman-adv/routing.c
+++ b/drivers/staging/batman-adv/routing.c
@@ -554,11 +554,11 @@ void receive_bat_packet(struct ethhdr *ethhdr,
batman_packet->orig) ? 1 : 0);

bat_dbg(DBG_BATMAN, bat_priv,
- "Received BATMAN packet via NB: %pM, IF: %s [%s] "
+ "Received BATMAN packet via NB: %pM, IF: %s [%pM] "
"(from OG: %pM, via prev OG: %pM, seqno %d, tq %d, "
"TTL %d, V %d, IDF %d)\n",
ethhdr->h_source, if_incoming->net_dev->name,
- if_incoming->addr_str, batman_packet->orig,
+ if_incoming->net_dev->dev_addr, batman_packet->orig,
batman_packet->prev_sender, batman_packet->seqno,
batman_packet->tq, batman_packet->ttl, batman_packet->version,
has_directlink_flag);
diff --git a/drivers/staging/batman-adv/send.c b/drivers/staging/batman-adv/send.c
index 5d57ef5..1d78bc5 100644
--- a/drivers/staging/batman-adv/send.c
+++ b/drivers/staging/batman-adv/send.c
@@ -135,13 +135,13 @@ static void send_packet_to_if(struct forw_packet *forw_packet,
"Forwarding"));
bat_dbg(DBG_BATMAN, bat_priv,
"%s %spacket (originator %pM, seqno %d, TQ %d, TTL %d,"
- " IDF %s) on interface %s [%s]\n",
+ " IDF %s) on interface %s [%pM]\n",
fwd_str, (packet_num > 0 ? "aggregated " : ""),
batman_packet->orig, ntohl(batman_packet->seqno),
batman_packet->tq, batman_packet->ttl,
(batman_packet->flags & DIRECTLINK ?
"on" : "off"),
- batman_if->net_dev->name, batman_if->addr_str);
+ batman_if->net_dev->name, batman_if->net_dev->dev_addr);

buff_pos += sizeof(struct batman_packet) +
(batman_packet->num_hna * ETH_ALEN);
@@ -183,12 +183,12 @@ static void send_packet(struct forw_packet *forw_packet)
/* FIXME: what about aggregated packets ? */
bat_dbg(DBG_BATMAN, bat_priv,
"%s packet (originator %pM, seqno %d, TTL %d) "
- "on interface %s [%s]\n",
+ "on interface %s [%pM]\n",
(forw_packet->own ? "Sending own" : "Forwarding"),
batman_packet->orig, ntohl(batman_packet->seqno),
batman_packet->ttl,
forw_packet->if_incoming->net_dev->name,
- forw_packet->if_incoming->addr_str);
+ forw_packet->if_incoming->net_dev->dev_addr);

/* skb is only used once and than forw_packet is free'd */
send_skb_packet(forw_packet->skb, forw_packet->if_incoming,
diff --git a/drivers/staging/batman-adv/types.h b/drivers/staging/batman-adv/types.h
index bb5827f..f3f7366 100644
--- a/drivers/staging/batman-adv/types.h
+++ b/drivers/staging/batman-adv/types.h
@@ -37,7 +37,6 @@ struct batman_if {
struct list_head list;
int16_t if_num;
char if_status;
- char addr_str[ETH_STR_LEN];
struct net_device *net_dev;
atomic_t seqno;
atomic_t frag_seqno;
diff --git a/drivers/staging/batman-adv/vis.c b/drivers/staging/batman-adv/vis.c
index 6b102a3..8f21649 100644
--- a/drivers/staging/batman-adv/vis.c
+++ b/drivers/staging/batman-adv/vis.c
@@ -130,15 +130,13 @@ static ssize_t vis_data_read_prim_sec(char *buff, struct hlist_head *if_list)
{
struct if_list_entry *entry;
struct hlist_node *pos;
- char tmp_addr_str[ETH_STR_LEN];
size_t len = 0;

hlist_for_each_entry(entry, pos, if_list, list) {
if (entry->primary)
len += sprintf(buff + len, "PRIMARY, ");
else {
- addr_to_string(tmp_addr_str, entry->addr);
- len += sprintf(buff + len, "SEC %s, ", tmp_addr_str);
+ len += sprintf(buff + len, "SEC %pM, ", entry->addr);
}
}

@@ -165,12 +163,9 @@ static size_t vis_data_count_prim_sec(struct hlist_head *if_list)
static ssize_t vis_data_read_entry(char *buff, struct vis_info_entry *entry,
uint8_t *src, bool primary)
{
- char to[18];
-
/* maximal length: max(4+17+2, 3+17+1+3+2) == 26 */
- addr_to_string(to, entry->dest);
if (primary && entry->quality == 0)
- return sprintf(buff, "HNA %s, ", to);
+ return sprintf(buff, "HNA %pM, ", entry->dest);
else if (compare_orig(entry->src, src))
return sprintf(buff, "TQ %s %d, ", to, entry->quality);

@@ -190,7 +185,6 @@ int vis_seq_print_text(struct seq_file *seq, void *offset)
struct if_list_entry *entry;
struct hlist_node *pos, *n;
int i;
- char tmp_addr_str[ETH_STR_LEN];
unsigned long flags;
int vis_server = atomic_read(&bat_priv->vis_mode);
size_t buff_pos, buf_size;
@@ -255,9 +249,8 @@ int vis_seq_print_text(struct seq_file *seq, void *offset)
}

hlist_for_each_entry(entry, pos, &vis_if_list, list) {
- addr_to_string(tmp_addr_str, entry->addr);
- buff_pos += sprintf(buff + buff_pos, "%s,",
- tmp_addr_str);
+ buff_pos += sprintf(buff + buff_pos, "%pM,",
+ entry->addr);

for (i = 0; i < packet->entries; i++)
buff_pos += vis_data_read_entry(buff + buff_pos,
--
1.7.2.3


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