[net-next PATCH] hsr: fix coding style issues

From: Murali Karicheri
Date: Wed Jun 21 2017 - 14:13:54 EST

This fix coding style issues detected by running checkpatch.pl -f
option on files under net/hsr.

Signed-off-by: Murali Karicheri <m-karicheri2@xxxxxx>
---
- applies to net-next/master
- Test logs at http://pastebin.ubuntu.com/24917637/
net/hsr/hsr_device.c | 49 +++++++++------------
net/hsr/hsr_forward.c | 72 ++++++++++++++-----------------
net/hsr/hsr_framereg.c | 113 +++++++++++++++++++++++--------------------------
net/hsr/hsr_main.c | 10 ++---
net/hsr/hsr_main.h | 36 +++++++---------
net/hsr/hsr_netlink.c | 55 +++++++++++-------------
net/hsr/hsr_slave.c | 9 ++--
7 files changed, 150 insertions(+), 194 deletions(-)

diff --git a/net/hsr/hsr_device.c b/net/hsr/hsr_device.c
index 4e7bdb2..6a1d7a5 100644
--- a/net/hsr/hsr_device.c
+++ b/net/hsr/hsr_device.c
@@ -23,7 +23,6 @@
#include "hsr_main.h"
#include "hsr_forward.h"

-
static bool is_admin_up(struct net_device *dev)
{
return dev && (dev->flags & IFF_UP);
@@ -82,7 +81,6 @@ static bool hsr_check_carrier(struct hsr_port *master)
return has_carrier;
}

-
static void hsr_check_announce(struct net_device *hsr_dev,
unsigned char old_operstate)
{
@@ -90,8 +88,8 @@ static void hsr_check_announce(struct net_device *hsr_dev,

hsr = netdev_priv(hsr_dev);

- if ((hsr_dev->operstate == IF_OPER_UP)
- && (old_operstate != IF_OPER_UP)) {
+ if ((hsr_dev->operstate == IF_OPER_UP) &&
+ (old_operstate != IF_OPER_UP)) {
/* Went up */
hsr->announce_count = 0;
hsr->announce_timer.expires = jiffies +
@@ -137,7 +135,6 @@ int hsr_get_max_mtu(struct hsr_priv *hsr)
return mtu_max - HSR_HLEN;
}

-
static int hsr_dev_change_mtu(struct net_device *dev, int new_mtu)
{
struct hsr_priv *hsr;
@@ -192,14 +189,12 @@ static int hsr_dev_open(struct net_device *dev)
return 0;
}

-
static int hsr_dev_close(struct net_device *dev)
{
/* Nothing to do here. */
return 0;
}

-
static netdev_features_t hsr_features_recompute(struct hsr_priv *hsr,
netdev_features_t features)
{
@@ -232,7 +227,6 @@ static netdev_features_t hsr_fix_features(struct net_device *dev,
return hsr_features_recompute(hsr, features);
}

-
static int hsr_dev_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct hsr_priv *hsr = netdev_priv(dev);
@@ -245,14 +239,13 @@ static int hsr_dev_xmit(struct sk_buff *skb, struct net_device *dev)
return NETDEV_TX_OK;
}

-
static const struct header_ops hsr_header_ops = {
.create = eth_header,
.parse = eth_header_parse,
};

static void send_hsr_supervision_frame(struct hsr_port *master,
- u8 type, u8 hsrVer)
+ u8 type, u8 hsr_ver)
{
struct sk_buff *skb;
int hlen, tlen;
@@ -268,34 +261,34 @@ static void send_hsr_supervision_frame(struct hsr_port *master,
sizeof(struct hsr_sup_tag) +
sizeof(struct hsr_sup_payload) + hlen + tlen);

- if (skb == NULL)
+ if (!skb)
return;

skb_reserve(skb, hlen);

skb->dev = master->dev;
- skb->protocol = htons(hsrVer ? ETH_P_HSR : ETH_P_PRP);
+ skb->protocol = htons(hsr_ver ? ETH_P_HSR : ETH_P_PRP);
skb->priority = TC_PRIO_CONTROL;

- if (dev_hard_header(skb, skb->dev, (hsrVer ? ETH_P_HSR : ETH_P_PRP),
+ if (dev_hard_header(skb, skb->dev, (hsr_ver ? ETH_P_HSR : ETH_P_PRP),
master->hsr->sup_multicast_addr,
skb->dev->dev_addr, skb->len) <= 0)
goto out;
skb_reset_mac_header(skb);

- if (hsrVer > 0) {
+ if (hsr_ver > 0) {
hsr_tag = skb_put(skb, sizeof(struct hsr_tag));
hsr_tag->encap_proto = htons(ETH_P_PRP);
set_hsr_tag_LSDU_size(hsr_tag, HSR_V1_SUP_LSDUSIZE);
}

hsr_stag = skb_put(skb, sizeof(struct hsr_sup_tag));
- set_hsr_stag_path(hsr_stag, (hsrVer ? 0x0 : 0xf));
- set_hsr_stag_HSR_Ver(hsr_stag, hsrVer);
+ set_hsr_stag_path(hsr_stag, (hsr_ver ? 0x0 : 0xf));
+ set_hsr_stag_HSR_ver(hsr_stag, hsr_ver);

/* From HSRv1 on we have separate supervision sequence numbers. */
spin_lock_irqsave(&master->hsr->seqnr_lock, irqflags);
- if (hsrVer > 0) {
+ if (hsr_ver > 0) {
hsr_stag->sequence_nr = htons(master->hsr->sup_sequence_nr);
hsr_tag->sequence_nr = htons(master->hsr->sequence_nr);
master->hsr->sup_sequence_nr++;
@@ -306,13 +299,14 @@ static void send_hsr_supervision_frame(struct hsr_port *master,
}
spin_unlock_irqrestore(&master->hsr->seqnr_lock, irqflags);

- hsr_stag->HSR_TLV_Type = type;
+ hsr_stag->HSR_TLV_type = type;
/* TODO: Why 12 in HSRv0? */
- hsr_stag->HSR_TLV_Length = hsrVer ? sizeof(struct hsr_sup_payload) : 12;
+ hsr_stag->HSR_TLV_length = hsr_ver ?
+ sizeof(struct hsr_sup_payload) : 12;

- /* Payload: MacAddressA */
+ /* Payload: mac_address_A */
hsr_sp = skb_put(skb, sizeof(struct hsr_sup_payload));
- ether_addr_copy(hsr_sp->MacAddressA, master->dev->dev_addr);
+ ether_addr_copy(hsr_sp->mac_address_A, master->dev->dev_addr);

skb_put_padto(skb, ETH_ZLEN + HSR_HLEN);

@@ -324,7 +318,6 @@ static void send_hsr_supervision_frame(struct hsr_port *master,
kfree_skb(skb);
}

-
/* Announce (supervision frame) timer function
*/
static void hsr_announce(unsigned long data)
@@ -332,21 +325,21 @@ static void hsr_announce(unsigned long data)
struct hsr_priv *hsr;
struct hsr_port *master;

- hsr = (struct hsr_priv *) data;
+ hsr = (struct hsr_priv *)data;

rcu_read_lock();
master = hsr_port_get_hsr(hsr, HSR_PT_MASTER);

- if (hsr->announce_count < 3 && hsr->protVersion == 0) {
+ if (hsr->announce_count < 3 && hsr->prot_version == 0) {
send_hsr_supervision_frame(master, HSR_TLV_ANNOUNCE,
- hsr->protVersion);
+ hsr->prot_version);
hsr->announce_count++;

hsr->announce_timer.expires = jiffies +
msecs_to_jiffies(HSR_ANNOUNCE_INTERVAL);
} else {
send_hsr_supervision_frame(master, HSR_TLV_LIFE_CHECK,
- hsr->protVersion);
+ hsr->prot_version);

hsr->announce_timer.expires = jiffies +
msecs_to_jiffies(HSR_LIFE_CHECK_INTERVAL);
@@ -358,7 +351,6 @@ static void hsr_announce(unsigned long data)
rcu_read_unlock();
}

-
/* According to comments in the declaration of struct net_device, this function
* is "Called from unregister, can be used to call free_netdev". Ok then...
*/
@@ -424,7 +416,6 @@ void hsr_dev_setup(struct net_device *dev)
dev->features |= NETIF_F_NETNS_LOCAL;
}

-
/* Return true if dev is a HSR master; return false otherwise.
*/
inline bool is_hsr_master(struct net_device *dev)
@@ -469,7 +460,7 @@ int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2],
ether_addr_copy(hsr->sup_multicast_addr, def_multicast_addr);
hsr->sup_multicast_addr[ETH_ALEN - 1] = multicast_spec;

- hsr->protVersion = protocol_version;
+ hsr->prot_version = protocol_version;

/* FIXME: should I modify the value of these?
*
diff --git a/net/hsr/hsr_forward.c b/net/hsr/hsr_forward.c
index 04b5450..2b994eb 100644
--- a/net/hsr/hsr_forward.c
+++ b/net/hsr/hsr_forward.c
@@ -17,7 +17,6 @@
#include "hsr_main.h"
#include "hsr_framereg.h"

-
struct hsr_node;

struct hsr_frame_info {
@@ -32,7 +31,6 @@ struct hsr_frame_info {
bool is_local_exclusive;
};

-
/* The uses I can see for these HSR supervision frames are:
* 1) Use the frames that are sent after node initialization ("HSR_TLV.Type =
* 22") to reset any sequence_nr counters belonging to that node. Useful if
@@ -46,50 +44,49 @@ struct hsr_frame_info {
* We just register these (as with normal frames) and throw them away.
*
* 3) Allow different MAC addresses for the two slave interfaces, using the
- * MacAddressA field.
+ * mac_address_A field.
*/
static bool is_supervision_frame(struct hsr_priv *hsr, struct sk_buff *skb)
{
- struct ethhdr *ethHdr;
- struct hsr_sup_tag *hsrSupTag;
- struct hsrv1_ethhdr_sp *hsrV1Hdr;
+ struct ethhdr *eth_hdr;
+ struct hsr_sup_tag *hsr_sup_tag;
+ struct hsrv1_ethhdr_sp *hsr_v1_hdr;

WARN_ON_ONCE(!skb_mac_header_was_set(skb));
- ethHdr = (struct ethhdr *) skb_mac_header(skb);
+ eth_hdr = (struct ethhdr *)skb_mac_header(skb);

/* Correct addr? */
- if (!ether_addr_equal(ethHdr->h_dest,
+ if (!ether_addr_equal(eth_hdr->h_dest,
hsr->sup_multicast_addr))
return false;

/* Correct ether type?. */
- if (!(ethHdr->h_proto == htons(ETH_P_PRP)
- || ethHdr->h_proto == htons(ETH_P_HSR)))
+ if (!(eth_hdr->h_proto == htons(ETH_P_PRP) ||
+ eth_hdr->h_proto == htons(ETH_P_HSR)))
return false;

/* Get the supervision header from correct location. */
- if (ethHdr->h_proto == htons(ETH_P_HSR)) { /* Okay HSRv1. */
- hsrV1Hdr = (struct hsrv1_ethhdr_sp *) skb_mac_header(skb);
- if (hsrV1Hdr->hsr.encap_proto != htons(ETH_P_PRP))
+ if (eth_hdr->h_proto == htons(ETH_P_HSR)) { /* Okay HSRv1. */
+ hsr_v1_hdr = (struct hsrv1_ethhdr_sp *)skb_mac_header(skb);
+ if (hsr_v1_hdr->hsr.encap_proto != htons(ETH_P_PRP))
return false;

- hsrSupTag = &hsrV1Hdr->hsr_sup;
+ hsr_sup_tag = &hsr_v1_hdr->hsr_sup;
} else {
- hsrSupTag = &((struct hsrv0_ethhdr_sp *) skb_mac_header(skb))->hsr_sup;
+ hsr_sup_tag =
+ &((struct hsrv0_ethhdr_sp *)skb_mac_header(skb))->hsr_sup;
}

- if ((hsrSupTag->HSR_TLV_Type != HSR_TLV_ANNOUNCE) &&
- (hsrSupTag->HSR_TLV_Type != HSR_TLV_LIFE_CHECK))
+ if ((hsr_sup_tag->HSR_TLV_type != HSR_TLV_ANNOUNCE) &&
+ (hsr_sup_tag->HSR_TLV_type != HSR_TLV_LIFE_CHECK))
return false;
- if ((hsrSupTag->HSR_TLV_Length != 12) &&
- (hsrSupTag->HSR_TLV_Length !=
- sizeof(struct hsr_sup_payload)))
+ if ((hsr_sup_tag->HSR_TLV_length != 12) &&
+ (hsr_sup_tag->HSR_TLV_length != sizeof(struct hsr_sup_payload)))
return false;

return true;
}

-
static struct sk_buff *create_stripped_skb(struct sk_buff *skb_in,
struct hsr_frame_info *frame)
{
@@ -100,7 +97,7 @@ static struct sk_buff *create_stripped_skb(struct sk_buff *skb_in,
skb_pull(skb_in, HSR_HLEN);
skb = __pskb_copy(skb_in, skb_headroom(skb_in) - HSR_HLEN, GFP_ATOMIC);
skb_push(skb_in, HSR_HLEN);
- if (skb == NULL)
+ if (!skb)
return NULL;

skb_reset_mac_header(skb);
@@ -108,7 +105,7 @@ static struct sk_buff *create_stripped_skb(struct sk_buff *skb_in,
if (skb->ip_summed == CHECKSUM_PARTIAL)
skb->csum_start -= HSR_HLEN;

- copylen = 2*ETH_ALEN;
+ copylen = 2 * ETH_ALEN;
if (frame->is_vlan)
copylen += VLAN_HLEN;
src = skb_mac_header(skb_in);
@@ -127,9 +124,8 @@ static struct sk_buff *frame_get_stripped_skb(struct hsr_frame_info *frame,
return skb_clone(frame->skb_std, GFP_ATOMIC);
}

-
static void hsr_fill_tag(struct sk_buff *skb, struct hsr_frame_info *frame,
- struct hsr_port *port, u8 protoVersion)
+ struct hsr_port *port, u8 prot_version)
{
struct hsr_ethhdr *hsr_ethhdr;
int lane_id;
@@ -144,13 +140,13 @@ static void hsr_fill_tag(struct sk_buff *skb, struct hsr_frame_info *frame,
if (frame->is_vlan)
lsdu_size -= 4;

- hsr_ethhdr = (struct hsr_ethhdr *) skb_mac_header(skb);
+ hsr_ethhdr = (struct hsr_ethhdr *)skb_mac_header(skb);

set_hsr_tag_path(&hsr_ethhdr->hsr_tag, lane_id);
set_hsr_tag_LSDU_size(&hsr_ethhdr->hsr_tag, lsdu_size);
hsr_ethhdr->hsr_tag.sequence_nr = htons(frame->sequence_nr);
hsr_ethhdr->hsr_tag.encap_proto = hsr_ethhdr->ethhdr.h_proto;
- hsr_ethhdr->ethhdr.h_proto = htons(protoVersion ?
+ hsr_ethhdr->ethhdr.h_proto = htons(prot_version ?
ETH_P_HSR : ETH_P_PRP);
}

@@ -164,7 +160,7 @@ static struct sk_buff *create_tagged_skb(struct sk_buff *skb_o,

/* Create the new skb with enough headroom to fit the HSR tag */
skb = __pskb_copy(skb_o, skb_headroom(skb_o) + HSR_HLEN, GFP_ATOMIC);
- if (skb == NULL)
+ if (!skb)
return NULL;
skb_reset_mac_header(skb);

@@ -180,7 +176,7 @@ static struct sk_buff *create_tagged_skb(struct sk_buff *skb_o,
memmove(dst, src, movelen);
skb_reset_mac_header(skb);

- hsr_fill_tag(skb, frame, port, port->hsr->protVersion);
+ hsr_fill_tag(skb, frame, port, port->hsr->prot_version);

return skb;
}
@@ -202,7 +198,6 @@ static struct sk_buff *frame_get_tagged_skb(struct hsr_frame_info *frame,
return create_tagged_skb(frame->skb_std, frame, port);
}

-
static void hsr_deliver_master(struct sk_buff *skb, struct net_device *dev,
struct hsr_node *node_src)
{
@@ -237,7 +232,6 @@ static int hsr_xmit(struct sk_buff *skb, struct hsr_port *port,
return dev_queue_xmit(skb);
}

-
/* Forward the frame through all devices except:
* - Back through the receiving device
* - If it's a HSR frame: through a device where it has passed before
@@ -283,7 +277,7 @@ static void hsr_forward_do(struct hsr_frame_info *frame)
skb = frame_get_tagged_skb(frame, port);
else
skb = frame_get_stripped_skb(frame, port);
- if (skb == NULL) {
+ if (!skb) {
/* FIXME: Record the dropped frame? */
continue;
}
@@ -296,7 +290,6 @@ static void hsr_forward_do(struct hsr_frame_info *frame)
}
}

-
static void check_local_dest(struct hsr_priv *hsr, struct sk_buff *skb,
struct hsr_frame_info *frame)
{
@@ -316,7 +309,6 @@ static void check_local_dest(struct hsr_priv *hsr, struct sk_buff *skb,
}
}

-
static int hsr_fill_frame_info(struct hsr_frame_info *frame,
struct sk_buff *skb, struct hsr_port *port)
{
@@ -325,18 +317,18 @@ static int hsr_fill_frame_info(struct hsr_frame_info *frame,

frame->is_supervision = is_supervision_frame(port->hsr, skb);
frame->node_src = hsr_get_node(port, skb, frame->is_supervision);
- if (frame->node_src == NULL)
+ if (!frame->node_src)
return -1; /* Unknown node and !is_supervision, or no mem */

- ethhdr = (struct ethhdr *) skb_mac_header(skb);
+ ethhdr = (struct ethhdr *)skb_mac_header(skb);
frame->is_vlan = false;
if (ethhdr->h_proto == htons(ETH_P_8021Q)) {
frame->is_vlan = true;
/* FIXME: */
WARN_ONCE(1, "HSR: VLAN not yet supported");
}
- if (ethhdr->h_proto == htons(ETH_P_PRP)
- || ethhdr->h_proto == htons(ETH_P_HSR)) {
+ if (ethhdr->h_proto == htons(ETH_P_PRP) ||
+ ethhdr->h_proto == htons(ETH_P_HSR)) {
frame->skb_std = NULL;
frame->skb_hsr = skb;
frame->sequence_nr = hsr_get_skb_sequence_nr(skb);
@@ -372,9 +364,9 @@ void hsr_forward_skb(struct sk_buff *skb, struct hsr_port *port)
hsr_register_frame_in(frame.node_src, port, frame.sequence_nr);
hsr_forward_do(&frame);

- if (frame.skb_hsr != NULL)
+ if (frame.skb_hsr)
kfree_skb(frame.skb_hsr);
- if (frame.skb_std != NULL)
+ if (frame.skb_std)
kfree_skb(frame.skb_std);
return;

diff --git a/net/hsr/hsr_framereg.c b/net/hsr/hsr_framereg.c
index 284a9b8..de0eb8b 100644
--- a/net/hsr/hsr_framereg.c
+++ b/net/hsr/hsr_framereg.c
@@ -22,23 +22,20 @@
#include "hsr_framereg.h"
#include "hsr_netlink.h"

-
struct hsr_node {
struct list_head mac_list;
- unsigned char MacAddressA[ETH_ALEN];
- unsigned char MacAddressB[ETH_ALEN];
+ unsigned char mac_address_A[ETH_ALEN];
+ unsigned char mac_address_B[ETH_ALEN];
/* Local slave through which AddrB frames are received from this node */
- enum hsr_port_type AddrB_port;
+ enum hsr_port_type addr_B_port;
unsigned long time_in[HSR_PT_PORTS];
bool time_in_stale[HSR_PT_PORTS];
u16 seq_out[HSR_PT_PORTS];
struct rcu_head rcu_head;
};

-
/* TODO: use hash lists for mac addresses (linux/jhash.h)? */

-
/* seq_nr_after(a, b) - return true if a is after (higher in sequence than) b,
* false otherwise.
*/
@@ -47,16 +44,16 @@ static bool seq_nr_after(u16 a, u16 b)
/* Remove inconsistency where
* seq_nr_after(a, b) == seq_nr_before(a, b)
*/
- if ((int) b - a == 32768)
+ if ((int)b - a == 32768)
return false;

- return (((s16) (b - a)) < 0);
+ return (((s16)(b - a)) < 0);
}
+
#define seq_nr_before(a, b) seq_nr_after((b), (a))
#define seq_nr_after_or_eq(a, b) (!seq_nr_before((a), (b)))
#define seq_nr_before_or_eq(a, b) (!seq_nr_after((a), (b)))

-
bool hsr_addr_is_self(struct hsr_priv *hsr, unsigned char *addr)
{
struct hsr_node *node;
@@ -68,9 +65,9 @@ bool hsr_addr_is_self(struct hsr_priv *hsr, unsigned char *addr)
return false;
}

- if (ether_addr_equal(addr, node->MacAddressA))
+ if (ether_addr_equal(addr, node->mac_address_A))
return true;
- if (ether_addr_equal(addr, node->MacAddressB))
+ if (ether_addr_equal(addr, node->mac_address_B))
return true;

return false;
@@ -78,20 +75,19 @@ bool hsr_addr_is_self(struct hsr_priv *hsr, unsigned char *addr)

/* Search for mac entry. Caller must hold rcu read lock.
*/
-static struct hsr_node *find_node_by_AddrA(struct list_head *node_db,
- const unsigned char addr[ETH_ALEN])
+static struct hsr_node *find_node_by_addr_A(struct list_head *node_db,
+ const unsigned char addr[ETH_ALEN])
{
struct hsr_node *node;

list_for_each_entry_rcu(node, node_db, mac_list) {
- if (ether_addr_equal(node->MacAddressA, addr))
+ if (ether_addr_equal(node->mac_address_A, addr))
return node;
}

return NULL;
}

-
/* Helper for device init; the self_node_db is used in hsr_rcv() to recognize
* frames from self that's been looped over the HSR ring.
*/
@@ -105,12 +101,12 @@ int hsr_create_self_node(struct list_head *self_node_db,
if (!node)
return -ENOMEM;

- ether_addr_copy(node->MacAddressA, addr_a);
- ether_addr_copy(node->MacAddressB, addr_b);
+ ether_addr_copy(node->mac_address_A, addr_a);
+ ether_addr_copy(node->mac_address_B, addr_b);

rcu_read_lock();
oldnode = list_first_or_null_rcu(self_node_db,
- struct hsr_node, mac_list);
+ struct hsr_node, mac_list);
if (oldnode) {
list_replace_rcu(&oldnode->mac_list, &node->mac_list);
rcu_read_unlock();
@@ -124,7 +120,6 @@ int hsr_create_self_node(struct list_head *self_node_db,
return 0;
}

-
/* Allocate an hsr_node and add it to node_db. 'addr' is the node's AddressA;
* seq_out is used to initialize filtering of outgoing duplicate frames
* originating from the newly added node.
@@ -140,7 +135,7 @@ struct hsr_node *hsr_add_node(struct list_head *node_db, unsigned char addr[],
if (!node)
return NULL;

- ether_addr_copy(node->MacAddressA, addr);
+ ether_addr_copy(node->mac_address_A, addr);

/* We are only interested in time diffs here, so use current jiffies
* as initialization. (0 could trigger an spurious ring error warning).
@@ -169,19 +164,19 @@ struct hsr_node *hsr_get_node(struct hsr_port *port, struct sk_buff *skb,
if (!skb_mac_header_was_set(skb))
return NULL;

- ethhdr = (struct ethhdr *) skb_mac_header(skb);
+ ethhdr = (struct ethhdr *)skb_mac_header(skb);

list_for_each_entry_rcu(node, node_db, mac_list) {
- if (ether_addr_equal(node->MacAddressA, ethhdr->h_source))
+ if (ether_addr_equal(node->mac_address_A, ethhdr->h_source))
return node;
- if (ether_addr_equal(node->MacAddressB, ethhdr->h_source))
+ if (ether_addr_equal(node->mac_address_B, ethhdr->h_source))
return node;
}

/* Everyone may create a node entry, connected node to a HSR device. */

- if (ethhdr->h_proto == htons(ETH_P_PRP)
- || ethhdr->h_proto == htons(ETH_P_HSR)) {
+ if (ethhdr->h_proto == htons(ETH_P_PRP) ||
+ ethhdr->h_proto == htons(ETH_P_HSR)) {
/* Use the existing sequence_nr from the tag as starting point
* for filtering duplicate frames.
*/
@@ -198,8 +193,8 @@ struct hsr_node *hsr_get_node(struct hsr_port *port, struct sk_buff *skb,
return hsr_add_node(node_db, ethhdr->h_source, seq_out);
}

-/* Use the Supervision frame's info about an eventual MacAddressB for merging
- * nodes that has previously had their MacAddressB registered as a separate
+/* Use the Supervision frame's info about an eventual mac_address_B for merging
+ * nodes that has previously had their mac_address_B registered as a separate
* node.
*/
void hsr_handle_sup_frame(struct sk_buff *skb, struct hsr_node *node_curr,
@@ -211,7 +206,7 @@ void hsr_handle_sup_frame(struct sk_buff *skb, struct hsr_node *node_curr,
struct list_head *node_db;
int i;

- ethhdr = (struct ethhdr *) skb_mac_header(skb);
+ ethhdr = (struct ethhdr *)skb_mac_header(skb);

/* Leave the ethernet header. */
skb_pull(skb, sizeof(struct ethhdr));
@@ -223,14 +218,14 @@ void hsr_handle_sup_frame(struct sk_buff *skb, struct hsr_node *node_curr,
/* And leave the HSR sup tag. */
skb_pull(skb, sizeof(struct hsr_sup_tag));

- hsr_sp = (struct hsr_sup_payload *) skb->data;
+ hsr_sp = (struct hsr_sup_payload *)skb->data;

- /* Merge node_curr (registered on MacAddressB) into node_real */
+ /* Merge node_curr (registered on mac_address_B) into node_real */
node_db = &port_rcv->hsr->node_db;
- node_real = find_node_by_AddrA(node_db, hsr_sp->MacAddressA);
+ node_real = find_node_by_addr_A(node_db, hsr_sp->mac_address_A);
if (!node_real)
/* No frame received from AddrA of this node yet */
- node_real = hsr_add_node(node_db, hsr_sp->MacAddressA,
+ node_real = hsr_add_node(node_db, hsr_sp->mac_address_A,
HSR_SEQNR_START - 1);
if (!node_real)
goto done; /* No mem */
@@ -238,17 +233,18 @@ void hsr_handle_sup_frame(struct sk_buff *skb, struct hsr_node *node_curr,
/* Node has already been merged */
goto done;

- ether_addr_copy(node_real->MacAddressB, ethhdr->h_source);
+ ether_addr_copy(node_real->mac_address_B, ethhdr->h_source);
for (i = 0; i < HSR_PT_PORTS; i++) {
if (!node_curr->time_in_stale[i] &&
time_after(node_curr->time_in[i], node_real->time_in[i])) {
node_real->time_in[i] = node_curr->time_in[i];
- node_real->time_in_stale[i] = node_curr->time_in_stale[i];
+ node_real->time_in_stale[i] =
+ node_curr->time_in_stale[i];
}
if (seq_nr_after(node_curr->seq_out[i], node_real->seq_out[i]))
node_real->seq_out[i] = node_curr->seq_out[i];
}
- node_real->AddrB_port = port_rcv->type;
+ node_real->addr_B_port = port_rcv->type;

list_del_rcu(&node_curr->mac_list);
kfree_rcu(node_curr, rcu_head);
@@ -257,11 +253,10 @@ void hsr_handle_sup_frame(struct sk_buff *skb, struct hsr_node *node_curr,
skb_push(skb, sizeof(struct hsrv1_ethhdr_sp));
}

-
/* 'skb' is a frame meant for this host, that is to be passed to upper layers.
*
* If the frame was sent by a node's B interface, replace the source
- * address with that node's "official" address (MacAddressA) so that upper
+ * address with that node's "official" address (mac_address_A) so that upper
* layers recognize where it came from.
*/
void hsr_addr_subst_source(struct hsr_node *node, struct sk_buff *skb)
@@ -271,7 +266,7 @@ void hsr_addr_subst_source(struct hsr_node *node, struct sk_buff *skb)
return;
}

- memcpy(&eth_hdr(skb)->h_source, node->MacAddressA, ETH_ALEN);
+ memcpy(&eth_hdr(skb)->h_source, node->mac_address_A, ETH_ALEN);
}

/* 'skb' is a frame meant for another host.
@@ -296,18 +291,18 @@ void hsr_addr_subst_dest(struct hsr_node *node_src, struct sk_buff *skb,
if (!is_unicast_ether_addr(eth_hdr(skb)->h_dest))
return;

- node_dst = find_node_by_AddrA(&port->hsr->node_db, eth_hdr(skb)->h_dest);
+ node_dst = find_node_by_addr_A(&port->hsr->node_db,
+ eth_hdr(skb)->h_dest);
if (!node_dst) {
WARN_ONCE(1, "%s: Unknown node\n", __func__);
return;
}
- if (port->type != node_dst->AddrB_port)
+ if (port->type != node_dst->addr_B_port)
return;

- ether_addr_copy(eth_hdr(skb)->h_dest, node_dst->MacAddressB);
+ ether_addr_copy(eth_hdr(skb)->h_dest, node_dst->mac_address_B);
}

-
void hsr_register_frame_in(struct hsr_node *node, struct hsr_port *port,
u16 sequence_nr)
{
@@ -340,7 +335,6 @@ int hsr_register_frame_out(struct hsr_port *port, struct hsr_node *node,
return 0;
}

-
static struct hsr_port *get_late_port(struct hsr_priv *hsr,
struct hsr_node *node)
{
@@ -361,7 +355,6 @@ static struct hsr_port *get_late_port(struct hsr_priv *hsr,
return NULL;
}

-
/* Remove stale sequence_nr records. Called by timer every
* HSR_LIFE_CHECK_INTERVAL (two seconds or so).
*/
@@ -373,7 +366,7 @@ void hsr_prune_nodes(unsigned long data)
unsigned long timestamp;
unsigned long time_a, time_b;

- hsr = (struct hsr_priv *) data;
+ hsr = (struct hsr_priv *)data;

rcu_read_lock();
list_for_each_entry_rcu(node, &hsr->node_db, mac_list) {
@@ -382,9 +375,9 @@ void hsr_prune_nodes(unsigned long data)
time_b = node->time_in[HSR_PT_SLAVE_B];

/* Check for timestamps old enough to risk wrap-around */
- if (time_after(jiffies, time_a + MAX_JIFFY_OFFSET/2))
+ if (time_after(jiffies, time_a + MAX_JIFFY_OFFSET / 2))
node->time_in_stale[HSR_PT_SLAVE_A] = true;
- if (time_after(jiffies, time_b + MAX_JIFFY_OFFSET/2))
+ if (time_after(jiffies, time_b + MAX_JIFFY_OFFSET / 2))
node->time_in_stale[HSR_PT_SLAVE_B] = true;

/* Get age of newest frame from node.
@@ -399,18 +392,19 @@ void hsr_prune_nodes(unsigned long data)

/* Warn of ring error only as long as we get frames at all */
if (time_is_after_jiffies(timestamp +
- msecs_to_jiffies(1.5*MAX_SLAVE_DIFF))) {
+ msecs_to_jiffies(1.5 * MAX_SLAVE_DIFF))) {
rcu_read_lock();
port = get_late_port(hsr, node);
- if (port != NULL)
- hsr_nl_ringerror(hsr, node->MacAddressA, port);
+ if (port)
+ hsr_nl_ringerror(hsr, node->mac_address_A,
+ port);
rcu_read_unlock();
}

/* Prune old entries */
if (time_is_before_jiffies(timestamp +
- msecs_to_jiffies(HSR_NODE_FORGET_TIME))) {
- hsr_nl_nodedown(hsr, node->MacAddressA);
+ msecs_to_jiffies(HSR_NODE_FORGET_TIME))) {
+ hsr_nl_nodedown(hsr, node->mac_address_A);
list_del_rcu(&node->mac_list);
/* Note that we need to free this entry later: */
kfree_rcu(node, rcu_head);
@@ -419,7 +413,6 @@ void hsr_prune_nodes(unsigned long data)
rcu_read_unlock();
}

-
void *hsr_get_next_node(struct hsr_priv *hsr, void *_pos,
unsigned char addr[ETH_ALEN])
{
@@ -429,20 +422,19 @@ void *hsr_get_next_node(struct hsr_priv *hsr, void *_pos,
node = list_first_or_null_rcu(&hsr->node_db,
struct hsr_node, mac_list);
if (node)
- ether_addr_copy(addr, node->MacAddressA);
+ ether_addr_copy(addr, node->mac_address_A);
return node;
}

node = _pos;
list_for_each_entry_continue_rcu(node, &hsr->node_db, mac_list) {
- ether_addr_copy(addr, node->MacAddressA);
+ ether_addr_copy(addr, node->mac_address_A);
return node;
}

return NULL;
}

-
int hsr_get_node_data(struct hsr_priv *hsr,
const unsigned char *addr,
unsigned char addr_b[ETH_ALEN],
@@ -456,15 +448,14 @@ int hsr_get_node_data(struct hsr_priv *hsr,
struct hsr_port *port;
unsigned long tdiff;

-
rcu_read_lock();
- node = find_node_by_AddrA(&hsr->node_db, addr);
+ node = find_node_by_addr_A(&hsr->node_db, addr);
if (!node) {
rcu_read_unlock();
return -ENOENT; /* No such entry */
}

- ether_addr_copy(addr_b, node->MacAddressB);
+ ether_addr_copy(addr_b, node->mac_address_B);

tdiff = jiffies - node->time_in[HSR_PT_SLAVE_A];
if (node->time_in_stale[HSR_PT_SLAVE_A])
@@ -490,8 +481,8 @@ int hsr_get_node_data(struct hsr_priv *hsr,
*if1_seq = node->seq_out[HSR_PT_SLAVE_B];
*if2_seq = node->seq_out[HSR_PT_SLAVE_A];

- if (node->AddrB_port != HSR_PT_NONE) {
- port = hsr_port_get_hsr(hsr, node->AddrB_port);
+ if (node->addr_B_port != HSR_PT_NONE) {
+ port = hsr_port_get_hsr(hsr, node->addr_B_port);
*addr_b_ifindex = port->dev->ifindex;
} else {
*addr_b_ifindex = -1;
diff --git a/net/hsr/hsr_main.c b/net/hsr/hsr_main.c
index cd37d00..84cacf8 100644
--- a/net/hsr/hsr_main.c
+++ b/net/hsr/hsr_main.c
@@ -19,7 +19,6 @@
#include "hsr_framereg.h"
#include "hsr_slave.h"

-
static int hsr_netdev_notify(struct notifier_block *nb, unsigned long event,
void *ptr)
{
@@ -31,12 +30,12 @@ static int hsr_netdev_notify(struct notifier_block *nb, unsigned long event,

dev = netdev_notifier_info_to_dev(ptr);
port = hsr_port_get_rtnl(dev);
- if (port == NULL) {
+ if (!port) {
if (!is_hsr_master(dev))
return NOTIFY_DONE; /* Not an HSR device */
hsr = netdev_priv(dev);
port = hsr_port_get_hsr(hsr, HSR_PT_MASTER);
- if (port == NULL) {
+ if (!port) {
/* Resend of notification concerning removed device? */
return NOTIFY_DONE;
}
@@ -63,7 +62,8 @@ static int hsr_netdev_notify(struct notifier_block *nb, unsigned long event,

if (port->type == HSR_PT_SLAVE_A) {
ether_addr_copy(master->dev->dev_addr, dev->dev_addr);
- call_netdevice_notifiers(NETDEV_CHANGEADDR, master->dev);
+ call_netdevice_notifiers(NETDEV_CHANGEADDR,
+ master->dev);
}

/* Make sure we recognize frames from ourselves in hsr_rcv() */
@@ -97,7 +97,6 @@ static int hsr_netdev_notify(struct notifier_block *nb, unsigned long event,
return NOTIFY_DONE;
}

-
struct hsr_port *hsr_port_get_hsr(struct hsr_priv *hsr, enum hsr_port_type pt)
{
struct hsr_port *port;
@@ -112,7 +111,6 @@ struct hsr_port *hsr_port_get_hsr(struct hsr_priv *hsr, enum hsr_port_type pt)
.notifier_call = hsr_netdev_notify, /* Slave event notifications */
};

-
static int __init hsr_init(void)
{
int res;
diff --git a/net/hsr/hsr_main.h b/net/hsr/hsr_main.h
index 9b9909e8..d1adbaf 100644
--- a/net/hsr/hsr_main.h
+++ b/net/hsr/hsr_main.h
@@ -15,7 +15,6 @@
#include <linux/netdevice.h>
#include <linux/list.h>

-
/* Time constants as specified in the HSR specification (IEC-62439-3 2010)
* Table 8.
* All values in milliseconds.
@@ -24,7 +23,6 @@
#define HSR_NODE_FORGET_TIME 60000 /* ms */
#define HSR_ANNOUNCE_INTERVAL 100 /* ms */

-
/* By how much may slave1 and slave2 timestamps of latest received frame from
* each node differ before we notify of communication problem?
*/
@@ -32,17 +30,14 @@
#define HSR_SEQNR_START (USHRT_MAX - 1024)
#define HSR_SUP_SEQNR_START (HSR_SEQNR_START / 2)

-
/* How often shall we check for broken ring and remove node entries older than
* HSR_NODE_FORGET_TIME?
*/
#define PRUNE_PERIOD 3000 /* ms */

-
#define HSR_TLV_ANNOUNCE 22
#define HSR_TLV_LIFE_CHECK 23

-
/* HSR Tag.
* As defined in IEC-62439-3:2010, the HSR tag is really { ethertype = 0x88FB,
* path, LSDU_size, sequence Nr }. But we let eth_header() create { h_dest,
@@ -84,7 +79,8 @@ static inline u16 get_hsr_tag_LSDU_size(struct hsr_tag *ht)
static inline void set_hsr_tag_path(struct hsr_tag *ht, u16 path)
{
ht->path_and_LSDU_size = htons(
- (ntohs(ht->path_and_LSDU_size) & 0x0FFF) | (path << 12));
+ (ntohs(ht->path_and_LSDU_size) & 0x0FFF) |
+ (path << 12));
}

static inline void set_hsr_tag_LSDU_size(struct hsr_tag *ht, u16 LSDU_size)
@@ -99,39 +95,38 @@ struct hsr_ethhdr {
struct hsr_tag hsr_tag;
} __packed;

-
/* HSR Supervision Frame data types.
* Field names as defined in the IEC:2010 standard for HSR.
*/
struct hsr_sup_tag {
- __be16 path_and_HSR_Ver;
+ __be16 path_and_HSR_ver;
__be16 sequence_nr;
- __u8 HSR_TLV_Type;
- __u8 HSR_TLV_Length;
+ __u8 HSR_TLV_type;
+ __u8 HSR_TLV_length;
} __packed;

struct hsr_sup_payload {
- unsigned char MacAddressA[ETH_ALEN];
+ unsigned char mac_address_A[ETH_ALEN];
} __packed;

static inline u16 get_hsr_stag_path(struct hsr_sup_tag *hst)
{
- return get_hsr_tag_path((struct hsr_tag *) hst);
+ return get_hsr_tag_path((struct hsr_tag *)hst);
}

static inline u16 get_hsr_stag_HSR_ver(struct hsr_sup_tag *hst)
{
- return get_hsr_tag_LSDU_size((struct hsr_tag *) hst);
+ return get_hsr_tag_LSDU_size((struct hsr_tag *)hst);
}

static inline void set_hsr_stag_path(struct hsr_sup_tag *hst, u16 path)
{
- set_hsr_tag_path((struct hsr_tag *) hst, path);
+ set_hsr_tag_path((struct hsr_tag *)hst, path);
}

-static inline void set_hsr_stag_HSR_Ver(struct hsr_sup_tag *hst, u16 HSR_Ver)
+static inline void set_hsr_stag_HSR_ver(struct hsr_sup_tag *hst, u16 HSR_ver)
{
- set_hsr_tag_LSDU_size((struct hsr_tag *) hst, HSR_Ver);
+ set_hsr_tag_LSDU_size((struct hsr_tag *)hst, HSR_ver);
}

struct hsrv0_ethhdr_sp {
@@ -145,7 +140,6 @@ struct hsrv1_ethhdr_sp {
struct hsr_sup_tag hsr_sup;
} __packed;

-
enum hsr_port_type {
HSR_PT_NONE = 0, /* Must be 0, used by framereg */
HSR_PT_SLAVE_A,
@@ -171,9 +165,9 @@ struct hsr_priv {
struct timer_list prune_timer;
int announce_count;
u16 sequence_nr;
- u16 sup_sequence_nr; /* For HSRv1 separate seq_nr for supervision */
- u8 protVersion; /* Indicate if HSRv0 or HSRv1. */
- spinlock_t seqnr_lock; /* locking for sequence_nr */
+ u16 sup_sequence_nr; /* For HSRv1 separate seq_nr for supervision */
+ u8 prot_version; /* Indicate if HSRv0 or HSRv1. */
+ spinlock_t seqnr_lock; /* locking for sequence_nr */
unsigned char sup_multicast_addr[ETH_ALEN];
};

@@ -187,7 +181,7 @@ static inline u16 hsr_get_skb_sequence_nr(struct sk_buff *skb)
{
struct hsr_ethhdr *hsr_ethhdr;

- hsr_ethhdr = (struct hsr_ethhdr *) skb_mac_header(skb);
+ hsr_ethhdr = (struct hsr_ethhdr *)skb_mac_header(skb);
return ntohs(hsr_ethhdr->hsr_tag.sequence_nr);
}

diff --git a/net/hsr/hsr_netlink.c b/net/hsr/hsr_netlink.c
index 81dac16..242c6ec 100644
--- a/net/hsr/hsr_netlink.c
+++ b/net/hsr/hsr_netlink.c
@@ -28,7 +28,6 @@
[IFLA_HSR_SEQ_NR] = { .type = NLA_U16 },
};

-
/* Here, it seems a netdevice has already been allocated for us, and the
* hsr_dev_setup routine has been executed. Nice!
*/
@@ -46,12 +45,14 @@ static int hsr_newlink(struct net *src_net, struct net_device *dev,
netdev_info(dev, "HSR: Slave1 device not specified\n");
return -EINVAL;
}
- link[0] = __dev_get_by_index(src_net, nla_get_u32(data[IFLA_HSR_SLAVE1]));
+ link[0] = __dev_get_by_index(src_net,
+ nla_get_u32(data[IFLA_HSR_SLAVE1]));
if (!data[IFLA_HSR_SLAVE2]) {
netdev_info(dev, "HSR: Slave2 device not specified\n");
return -EINVAL;
}
- link[1] = __dev_get_by_index(src_net, nla_get_u32(data[IFLA_HSR_SLAVE2]));
+ link[1] = __dev_get_by_index(src_net,
+ nla_get_u32(data[IFLA_HSR_SLAVE2]));

if (!link[0] || !link[1])
return -ENODEV;
@@ -118,8 +119,6 @@ static int hsr_fill_info(struct sk_buff *skb, const struct net_device *dev)
.fill_info = hsr_fill_info,
};

-
-
/* attribute policy */
static const struct nla_policy hsr_genl_policy[HSR_A_MAX + 1] = {
[HSR_A_NODE_ADDR] = { .len = ETH_ALEN },
@@ -137,8 +136,6 @@ static int hsr_fill_info(struct sk_buff *skb, const struct net_device *dev)
{ .name = "hsr-network", },
};

-
-
/* This is called if for some node with MAC address addr, we only get frames
* over one of the slave interfaces. This would indicate an open network ring
* (i.e. a link has failed somewhere).
@@ -155,7 +152,8 @@ void hsr_nl_ringerror(struct hsr_priv *hsr, unsigned char addr[ETH_ALEN],
if (!skb)
goto fail;

- msg_head = genlmsg_put(skb, 0, 0, &hsr_genl_family, 0, HSR_C_RING_ERROR);
+ msg_head = genlmsg_put(skb,
+ 0, 0, &hsr_genl_family, 0, HSR_C_RING_ERROR);
if (!msg_head)
goto nla_put_failure;

@@ -200,7 +198,6 @@ void hsr_nl_nodedown(struct hsr_priv *hsr, unsigned char addr[ETH_ALEN])
if (!msg_head)
goto nla_put_failure;

-
res = nla_put(skb, HSR_A_NODE_ADDR, ETH_ALEN, addr);
if (res < 0)
goto nla_put_failure;
@@ -220,7 +217,6 @@ void hsr_nl_nodedown(struct hsr_priv *hsr, unsigned char addr[ETH_ALEN])
rcu_read_unlock();
}

-
/* HSR_C_GET_NODE_STATUS lets userspace query the internal HSR node table
* about the status of a specific node in the network, defined by its MAC
* address.
@@ -259,15 +255,13 @@ static int hsr_get_node_status(struct sk_buff *skb_in, struct genl_info *info)
goto invalid;

hsr_dev = __dev_get_by_index(genl_info_net(info),
- nla_get_u32(info->attrs[HSR_A_IFINDEX]));
+ nla_get_u32(info->attrs[HSR_A_IFINDEX]));
if (!hsr_dev)
goto invalid;
if (!is_hsr_master(hsr_dev))
goto invalid;

-
/* Send reply */
-
skb_out = genlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
if (!skb_out) {
res = -ENOMEM;
@@ -275,8 +269,8 @@ static int hsr_get_node_status(struct sk_buff *skb_in, struct genl_info *info)
}

msg_head = genlmsg_put(skb_out, NETLINK_CB(skb_in).portid,
- info->snd_seq, &hsr_genl_family, 0,
- HSR_C_SET_NODE_STATUS);
+ info->snd_seq, &hsr_genl_family, 0,
+ HSR_C_SET_NODE_STATUS);
if (!msg_head) {
res = -ENOMEM;
goto nla_put_failure;
@@ -288,28 +282,30 @@ static int hsr_get_node_status(struct sk_buff *skb_in, struct genl_info *info)

hsr = netdev_priv(hsr_dev);
res = hsr_get_node_data(hsr,
- (unsigned char *) nla_data(info->attrs[HSR_A_NODE_ADDR]),
- hsr_node_addr_b,
- &addr_b_ifindex,
- &hsr_node_if1_age,
- &hsr_node_if1_seq,
- &hsr_node_if2_age,
- &hsr_node_if2_seq);
+ (unsigned char *)
+ nla_data(info->attrs[HSR_A_NODE_ADDR]),
+ hsr_node_addr_b,
+ &addr_b_ifindex,
+ &hsr_node_if1_age,
+ &hsr_node_if1_seq,
+ &hsr_node_if2_age,
+ &hsr_node_if2_seq);
if (res < 0)
goto nla_put_failure;

res = nla_put(skb_out, HSR_A_NODE_ADDR, ETH_ALEN,
- nla_data(info->attrs[HSR_A_NODE_ADDR]));
+ nla_data(info->attrs[HSR_A_NODE_ADDR]));
if (res < 0)
goto nla_put_failure;

if (addr_b_ifindex > -1) {
res = nla_put(skb_out, HSR_A_NODE_ADDR_B, ETH_ALEN,
- hsr_node_addr_b);
+ hsr_node_addr_b);
if (res < 0)
goto nla_put_failure;

- res = nla_put_u32(skb_out, HSR_A_ADDR_B_IFINDEX, addr_b_ifindex);
+ res = nla_put_u32(skb_out, HSR_A_ADDR_B_IFINDEX,
+ addr_b_ifindex);
if (res < 0)
goto nla_put_failure;
}
@@ -361,7 +357,7 @@ static int hsr_get_node_status(struct sk_buff *skb_in, struct genl_info *info)
return res;
}

-/* Get a list of MacAddressA of all nodes known to this node (including self).
+/* Get a list of mac_address_A of all nodes known to this node (including self).
*/
static int hsr_get_node_list(struct sk_buff *skb_in, struct genl_info *info)
{
@@ -391,9 +387,7 @@ static int hsr_get_node_list(struct sk_buff *skb_in, struct genl_info *info)
if (!is_hsr_master(hsr_dev))
goto invalid;

-
/* Send reply */
-
skb_out = genlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
if (!skb_out) {
res = -ENOMEM;
@@ -401,8 +395,8 @@ static int hsr_get_node_list(struct sk_buff *skb_in, struct genl_info *info)
}

msg_head = genlmsg_put(skb_out, NETLINK_CB(skb_in).portid,
- info->snd_seq, &hsr_genl_family, 0,
- HSR_C_SET_NODE_LIST);
+ info->snd_seq, &hsr_genl_family, 0,
+ HSR_C_SET_NODE_LIST);
if (!msg_head) {
res = -ENOMEM;
goto nla_put_failure;
@@ -443,7 +437,6 @@ static int hsr_get_node_list(struct sk_buff *skb_in, struct genl_info *info)
return res;
}

-
static const struct genl_ops hsr_ops[] = {
{
.cmd = HSR_C_GET_NODE_STATUS,
diff --git a/net/hsr/hsr_slave.c b/net/hsr/hsr_slave.c
index 56080da..0cf7870 100644
--- a/net/hsr/hsr_slave.c
+++ b/net/hsr/hsr_slave.c
@@ -18,7 +18,6 @@
#include "hsr_forward.h"
#include "hsr_framereg.h"

-
static rx_handler_result_t hsr_handle_frame(struct sk_buff **pskb)
{
struct sk_buff *skb = *pskb;
@@ -61,7 +60,6 @@ bool hsr_port_exists(const struct net_device *dev)
return rcu_access_pointer(dev->rx_handler) == hsr_handle_frame;
}

-
static int hsr_check_dev_ok(struct net_device *dev)
{
/* Don't allow HSR on non-ethernet like devices */
@@ -99,7 +97,6 @@ static int hsr_check_dev_ok(struct net_device *dev)
return 0;
}

-
/* Setup device to be added to the HSR bridge. */
static int hsr_portdev_setup(struct net_device *dev, struct hsr_port *port)
{
@@ -143,11 +140,11 @@ int hsr_add_port(struct hsr_priv *hsr, struct net_device *dev,
}

port = hsr_port_get_hsr(hsr, type);
- if (port != NULL)
+ if (port)
return -EBUSY; /* This port already exists */

port = kzalloc(sizeof(*port), GFP_KERNEL);
- if (port == NULL)
+ if (!port)
return -ENOMEM;

if (type != HSR_PT_MASTER) {
@@ -184,7 +181,7 @@ void hsr_del_port(struct hsr_port *port)
list_del_rcu(&port->port_list);

if (port != master) {
- if (master != NULL) {
+ if (master) {
netdev_update_features(master->dev);
dev_set_mtu(master->dev, hsr_get_max_mtu(hsr));
}
--
1.9.1