Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/net/hsr/hsr_forward.c b/net/hsr/hsr_forward.c
index 04b5450..ddd9605 100644
--- a/net/hsr/hsr_forward.c
+++ b/net/hsr/hsr_forward.c
@@ -1,10 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0
/* Copyright 2011-2014 Autronica Fire and Security AS
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
- *
* Author(s):
* 2011-2014 Arvid Brodin, arvid.brodin@alten.se
*/
@@ -17,7 +13,6 @@
#include "hsr_main.h"
#include "hsr_framereg.h"
-
struct hsr_node;
struct hsr_frame_info {
@@ -32,7 +27,6 @@
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
@@ -50,46 +44,45 @@
*/
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 +93,7 @@
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 +101,7 @@
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 +120,8 @@
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 proto_version)
{
struct hsr_ethhdr *hsr_ethhdr;
int lane_id;
@@ -144,13 +136,13 @@
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(proto_version ?
ETH_P_HSR : ETH_P_PRP);
}
@@ -164,7 +156,7 @@
/* 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 +172,7 @@
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;
}
@@ -194,7 +186,7 @@
if (frame->skb_hsr)
return skb_clone(frame->skb_hsr, GFP_ATOMIC);
- if ((port->type != HSR_PT_SLAVE_A) && (port->type != HSR_PT_SLAVE_B)) {
+ if (port->type != HSR_PT_SLAVE_A && port->type != HSR_PT_SLAVE_B) {
WARN_ONCE(1, "HSR: Bug: trying to create a tagged frame for a non-ring port");
return NULL;
}
@@ -202,7 +194,6 @@
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 +228,6 @@
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
@@ -260,11 +250,11 @@
continue;
/* Don't deliver locally unless we should */
- if ((port->type == HSR_PT_MASTER) && !frame->is_local_dest)
+ if (port->type == HSR_PT_MASTER && !frame->is_local_dest)
continue;
/* Deliver frames directly addressed to us to master only */
- if ((port->type != HSR_PT_MASTER) && frame->is_local_exclusive)
+ if (port->type != HSR_PT_MASTER && frame->is_local_exclusive)
continue;
/* Don't send frame over port where it has been sent before */
@@ -272,7 +262,7 @@
frame->sequence_nr))
continue;
- if (frame->is_supervision && (port->type == HSR_PT_MASTER)) {
+ if (frame->is_supervision && port->type == HSR_PT_MASTER) {
hsr_handle_sup_frame(frame->skb_hsr,
frame->node_src,
frame->port_rcv);
@@ -283,7 +273,7 @@
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 +286,6 @@
}
}
-
static void check_local_dest(struct hsr_priv *hsr, struct sk_buff *skb,
struct hsr_frame_info *frame)
{
@@ -307,16 +296,15 @@
frame->is_local_exclusive = false;
}
- if ((skb->pkt_type == PACKET_HOST) ||
- (skb->pkt_type == PACKET_MULTICAST) ||
- (skb->pkt_type == PACKET_BROADCAST)) {
+ if (skb->pkt_type == PACKET_HOST ||
+ skb->pkt_type == PACKET_MULTICAST ||
+ skb->pkt_type == PACKET_BROADCAST) {
frame->is_local_dest = true;
} else {
frame->is_local_dest = false;
}
}
-
static int hsr_fill_frame_info(struct hsr_frame_info *frame,
struct sk_buff *skb, struct hsr_port *port)
{
@@ -325,18 +313,18 @@
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);
@@ -371,10 +359,17 @@
goto out_drop;
hsr_register_frame_in(frame.node_src, port, frame.sequence_nr);
hsr_forward_do(&frame);
+ /* Gets called for ingress frames as well as egress from master port.
+ * So check and increment stats for master port only here.
+ */
+ if (port->type == HSR_PT_MASTER) {
+ port->dev->stats.tx_packets++;
+ port->dev->stats.tx_bytes += skb->len;
+ }
- 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;