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Date: Tue, 17 Apr 2012 13:58:25 +0200
From: Antonio Quartulli <ordex@...istici.org>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, b.a.t.m.a.n@...ts.open-mesh.org,
Antonio Quartulli <ordex@...istici.org>
Subject: [PATCH 09/11] batman-adv: use ETH_HLEN instead of sizeof(struct ethhdr)
Instead of using sizeof(struct ethhdr) it is strongly recommended to use the
kernel macro ETH_HLEN. This patch substitute each occurrence of the former
expressione with the latter one.
Signed-off-by: Antonio Quartulli <ordex@...istici.org>
---
net/batman-adv/bat_iv_ogm.c | 7 +++----
net/batman-adv/bridge_loop_avoidance.c | 10 ++++------
net/batman-adv/hard-interface.c | 3 +--
net/batman-adv/icmp_socket.c | 4 ++--
net/batman-adv/routing.c | 8 ++++----
net/batman-adv/send.c | 2 +-
net/batman-adv/soft-interface.c | 2 +-
net/batman-adv/types.h | 2 +-
net/batman-adv/vis.c | 8 ++++----
9 files changed, 21 insertions(+), 25 deletions(-)
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 1d365e2..5bb35df 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -355,10 +355,9 @@ static void bat_iv_ogm_aggregate_new(const unsigned char *packet_buff,
if ((atomic_read(&bat_priv->aggregated_ogms)) &&
(packet_len < MAX_AGGREGATION_BYTES))
forw_packet_aggr->skb = dev_alloc_skb(MAX_AGGREGATION_BYTES +
- sizeof(struct ethhdr));
+ ETH_HLEN);
else
- forw_packet_aggr->skb = dev_alloc_skb(packet_len +
- sizeof(struct ethhdr));
+ forw_packet_aggr->skb = dev_alloc_skb(packet_len + ETH_HLEN);
if (!forw_packet_aggr->skb) {
if (!own_packet)
@@ -366,7 +365,7 @@ static void bat_iv_ogm_aggregate_new(const unsigned char *packet_buff,
kfree(forw_packet_aggr);
goto out;
}
- skb_reserve(forw_packet_aggr->skb, sizeof(struct ethhdr));
+ skb_reserve(forw_packet_aggr->skb, ETH_HLEN);
INIT_HLIST_NODE(&forw_packet_aggr->list);
diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
index 1cf18ac..6f188f1 100644
--- a/net/batman-adv/bridge_loop_avoidance.c
+++ b/net/batman-adv/bridge_loop_avoidance.c
@@ -290,9 +290,7 @@ static void bla_send_claim(struct bat_priv *bat_priv, uint8_t *mac,
goto out;
ethhdr = (struct ethhdr *)skb->data;
- hw_src = (uint8_t *)ethhdr +
- sizeof(struct ethhdr) +
- sizeof(struct arphdr);
+ hw_src = (uint8_t *)ethhdr + ETH_HLEN + sizeof(struct arphdr);
/* now we pretend that the client would have sent this ... */
switch (claimtype) {
@@ -340,7 +338,7 @@ static void bla_send_claim(struct bat_priv *bat_priv, uint8_t *mac,
skb_reset_mac_header(skb);
skb->protocol = eth_type_trans(skb, soft_iface);
bat_priv->stats.rx_packets++;
- bat_priv->stats.rx_bytes += skb->len + sizeof(struct ethhdr);
+ bat_priv->stats.rx_bytes += skb->len + ETH_HLEN;
soft_iface->last_rx = jiffies;
netif_rx(skb);
@@ -845,7 +843,7 @@ static int bla_process_claim(struct bat_priv *bat_priv,
headlen = sizeof(*vhdr);
} else {
proto = ntohs(ethhdr->h_proto);
- headlen = sizeof(*ethhdr);
+ headlen = ETH_HLEN;
}
if (proto != ETH_P_ARP)
@@ -1303,7 +1301,7 @@ int bla_is_backbone_gw(struct sk_buff *skb,
return 0;
/* first, find out the vid. */
- if (!pskb_may_pull(skb, hdr_size + sizeof(struct ethhdr)))
+ if (!pskb_may_pull(skb, hdr_size + ETH_HLEN))
return 0;
ethhdr = (struct ethhdr *)(((uint8_t *)skb->data) + hdr_size);
diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
index e8c5da3..47c79d7 100644
--- a/net/batman-adv/hard-interface.c
+++ b/net/batman-adv/hard-interface.c
@@ -574,8 +574,7 @@ static int batman_skb_recv(struct sk_buff *skb, struct net_device *dev,
goto err_free;
/* expect a valid ethernet header here. */
- if (unlikely(skb->mac_len != sizeof(struct ethhdr) ||
- !skb_mac_header(skb)))
+ if (unlikely(skb->mac_len != ETH_HLEN || !skb_mac_header(skb)))
goto err_free;
if (!hard_iface->soft_iface)
diff --git a/net/batman-adv/icmp_socket.c b/net/batman-adv/icmp_socket.c
index b87518e..2e98a57 100644
--- a/net/batman-adv/icmp_socket.c
+++ b/net/batman-adv/icmp_socket.c
@@ -175,13 +175,13 @@ static ssize_t bat_socket_write(struct file *file, const char __user *buff,
if (len >= sizeof(struct icmp_packet_rr))
packet_len = sizeof(struct icmp_packet_rr);
- skb = dev_alloc_skb(packet_len + sizeof(struct ethhdr));
+ skb = dev_alloc_skb(packet_len + ETH_HLEN);
if (!skb) {
len = -ENOMEM;
goto out;
}
- skb_reserve(skb, sizeof(struct ethhdr));
+ skb_reserve(skb, ETH_HLEN);
icmp_packet = (struct icmp_packet_rr *)skb_put(skb, packet_len);
if (copy_from_user(icmp_packet, buff, packet_len)) {
diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
index ac13a6a..ff56086 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -313,7 +313,7 @@ static int recv_my_icmp_packet(struct bat_priv *bat_priv,
goto out;
/* create a copy of the skb, if needed, to modify it. */
- if (skb_cow(skb, sizeof(struct ethhdr)) < 0)
+ if (skb_cow(skb, ETH_HLEN) < 0)
goto out;
icmp_packet = (struct icmp_packet_rr *)skb->data;
@@ -368,7 +368,7 @@ static int recv_icmp_ttl_exceeded(struct bat_priv *bat_priv,
goto out;
/* create a copy of the skb, if needed, to modify it. */
- if (skb_cow(skb, sizeof(struct ethhdr)) < 0)
+ if (skb_cow(skb, ETH_HLEN) < 0)
goto out;
icmp_packet = (struct icmp_packet *)skb->data;
@@ -454,7 +454,7 @@ int recv_icmp_packet(struct sk_buff *skb, struct hard_iface *recv_if)
goto out;
/* create a copy of the skb, if needed, to modify it. */
- if (skb_cow(skb, sizeof(struct ethhdr)) < 0)
+ if (skb_cow(skb, ETH_HLEN) < 0)
goto out;
icmp_packet = (struct icmp_packet_rr *)skb->data;
@@ -841,7 +841,7 @@ static int route_unicast_packet(struct sk_buff *skb, struct hard_iface *recv_if)
goto out;
/* create a copy of the skb, if needed, to modify it. */
- if (skb_cow(skb, sizeof(struct ethhdr)) < 0)
+ if (skb_cow(skb, ETH_HLEN) < 0)
goto out;
unicast_packet = (struct unicast_packet *)skb->data;
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index b5f078c..7c66b61 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -51,7 +51,7 @@ int send_skb_packet(struct sk_buff *skb, struct hard_iface *hard_iface,
}
/* push to the ethernet header. */
- if (my_skb_head_push(skb, sizeof(*ethhdr)) < 0)
+ if (my_skb_head_push(skb, ETH_HLEN) < 0)
goto send_skb_err;
skb_reset_mac_header(skb);
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index efe0fba..6e2530b 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -292,7 +292,7 @@ void interface_rx(struct net_device *soft_iface,
/* skb->ip_summed = CHECKSUM_UNNECESSARY;*/
bat_priv->stats.rx_packets++;
- bat_priv->stats.rx_bytes += skb->len + sizeof(struct ethhdr);
+ bat_priv->stats.rx_bytes += skb->len + ETH_HLEN;
soft_iface->last_rx = jiffies;
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index 4d93aad..2f4848b 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -27,7 +27,7 @@
#include "packet.h"
#include "bitarray.h"
-#define BAT_HEADER_LEN (sizeof(struct ethhdr) + \
+#define BAT_HEADER_LEN (ETH_HLEN + \
((sizeof(struct unicast_packet) > sizeof(struct bcast_packet) ? \
sizeof(struct unicast_packet) : \
sizeof(struct bcast_packet))))
diff --git a/net/batman-adv/vis.c b/net/batman-adv/vis.c
index c4a5b8c..cec216f 100644
--- a/net/batman-adv/vis.c
+++ b/net/batman-adv/vis.c
@@ -434,12 +434,12 @@ static struct vis_info *add_packet(struct bat_priv *bat_priv,
return NULL;
info->skb_packet = dev_alloc_skb(sizeof(*packet) + vis_info_len +
- sizeof(struct ethhdr));
+ ETH_HLEN);
if (!info->skb_packet) {
kfree(info);
return NULL;
}
- skb_reserve(info->skb_packet, sizeof(struct ethhdr));
+ skb_reserve(info->skb_packet, ETH_HLEN);
packet = (struct vis_packet *)skb_put(info->skb_packet, sizeof(*packet)
+ vis_info_len);
@@ -894,11 +894,11 @@ int vis_init(struct bat_priv *bat_priv)
bat_priv->my_vis_info->skb_packet = dev_alloc_skb(sizeof(*packet) +
MAX_VIS_PACKET_SIZE +
- sizeof(struct ethhdr));
+ ETH_HLEN);
if (!bat_priv->my_vis_info->skb_packet)
goto free_info;
- skb_reserve(bat_priv->my_vis_info->skb_packet, sizeof(struct ethhdr));
+ skb_reserve(bat_priv->my_vis_info->skb_packet, ETH_HLEN);
packet = (struct vis_packet *)skb_put(bat_priv->my_vis_info->skb_packet,
sizeof(*packet));
--
1.7.9.4
--
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